# US 2022/0045401 A1 · Battery Case Unlocking Apparatus, Battery Case, and Quick Battery Case Replacement System

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- Number: US 2022/0045401 A1
- Document ID: US20220045401A1
- Status: Published application
- Kind: A1
- Application number: 17/507,781
- Filed: 2021-10-21
- Published: 2022-02-10
- Earliest claimed: 2017-12-29
- Assignees: Shanghai Dianba New Energy Technology Co., Ltd.; Aulton New Energy Automotive Technology Group
- Applicants: Shanghai Dianba New Energy Technology Co., Ltd.; Aulton New Energy Automotive Technology Group
- Inventors: Jianping Zhang; Chunhua Huang; Danliang Qiu
- Web page: https://patentgrep.com/patent/US20220045401A1

## CPC

- B60L 50/64: Constructional details of batteries specially adapted for electric vehicles
- H01M 50/264: for cells or batteries, e.g. straps, tie rods or peripheral frames
- B60K 1/04: of the electric storage means for propulsion
- B60L 53/80: Exchanging energy storage elements, e.g. removable batteries
- E05B 79/12: using connecting rods
- H01M 50/244: Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
- H01M 50/249: specially adapted for aircraft or vehicles, e.g. cars or trains (constructional details of batteries specially adapted for electric vehicles B60L50/64)
- H01M 50/262: with fastening means, e.g. locks
- B60K 2001/0455: {Removal or replacement of the energy storages}
- H01M 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane
- Y02E 60/10: Energy storage using batteries
- Y02T 10/70: Energy storage systems for electromobility, e.g. batteries
- Y02T 10/7072: Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
- B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- E05B: LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A battery case unlocking apparatus, a battery case, and a quick battery case replacement system. The battery case unlocking apparatus comprises: a mount (1), an extensible/retractable mechanism (2), a transmission mechanism (3), and a locking mechanism (4). The locking mechanism (4) is used for locking and fixing a body (6) of a battery case to a battery holder (7) of an electric vehicle. The extensible/retractable mechanism (2) passes through the mount (1) and carries out extension/retraction movement in the mount (1) relative to the transmission mechanism (3) to drive the transmission mechanism (3) to move between the extensible/retractable mechanism (2) and the locking mechanism (4), thereby controlling the locking or unlocking of the locking mechanism (4). The battery case comprises the body (6) and the battery case unlocking apparatus. The quick battery case replacement system comprises: the battery holder (7), a replacement device (8), and the battery case.

## Claims

### Claim 1

A battery case unlocking apparatus, wherein, the battery case unlocking apparatus comprises:
an extensible/retractable mechanism, a transmission mechanism and a locking mechanism;
the locking mechanism is used for locking and fixing a body of the battery case to a battery holder of an electric vehicle;
the extensible/retractable mechanism carries out extension/retraction movement relative to the transmission mechanism under an unlocking external force;
the transmission mechanism is connected with the extensible/retractable mechanism at one end, and the other end of the transmission mechanism is connected with the locking mechanism;
the extension/retraction movement of the extensible/retractable mechanism drives the transmission mechanism to move between the extensible/retractable mechanism and the locking mechanism, and the movement of the transmission mechanism controls the locking or unlocking of the locking mechanism;
the transmission mechanism comprises an active pole, a driven pole, a connecting rod, a driving rod and a guiding part;
the active pole is connected with the extensible/retractable mechanism, the driven pole is connected with one end of the driving rod, the connecting rod is connected with the active pole and the driven pole respectively, the connecting rod may rotate around the axis of the active pole, and the connecting rod may rotate around the axis of the driven pole;
the other end of the driving rod is connected with the locking mechanism;
the extensible/retractable mechanism is used to drive the motion of the active pole, the active pole and the driven pole are linked through the connecting rod, the driven pole moves along the guiding part on both sides of the active pole in different directions from the moving direction of the active pole, the longitudinal moment of the active pole is converted into the transverse moment of the driving rod, and the transverse movement of the active pole is led by the guiding part.

### Claim 2 (depends on 1)

The battery case unlocking apparatus of claim 1, wherein, the guiding part is provided with a driven guiding hole extending along the moving direction of the driving rod, and the driven pole passes through the driven guiding hole and slides in the driven guiding hole;
Preferably, the guiding part is provided with an active guiding hole extending along the extending/retracting direction of the extensible/retractable mechanism, the active pole passes through the active guiding hole and slides in the active guiding hole.

### Claim 3 (depends on 2)

The battery case unlocking apparatus of claim 2, wherein, the guiding part is provided with a driving guiding hole, and the driving rod passes through the driving guiding hole and moves in the driving guiding hole.

### Claim 4 (depends on 2)

The battery case unlocking apparatus of claim 2, wherein, the driving rod comprises an active pull rod, a first reset spring and a driven pull rod, and the active pull rod is connected with the driven pole, the active pull rod is connected with the driven pull rod, the driven pull rod is connected with the locking mechanism, the first reset spring is sleeved outside the active pull rod, one end of the first reset spring is connected with the guiding part, and the other end of the first reset spring is connected with the active pull rod.

### Claim 5 (depends on 1)

The battery case unlocking apparatus of claim 1, wherein, the battery case unlocking apparatus comprises a mount, the extensible/retractable mechanism passes through the mount and carries out extension/retraction movement in the mount relative to the transmission mechanism under an unlocking external force.

### Claim 6 (depends on 5)

The battery case unlocking apparatus of claim 5, wherein, the extensible/retractable mechanism comprises an extensible/retractable rod and a hollow shaft, the mount is sleeved outside the hollow shaft, the extensible/retractable rod passes through the hollow shaft and is capable of performing extension/retraction movement in the hollow shaft, and the extensible/retractable rod is connected with one end of the transmission mechanism.

### Claim 7 (depends on 6)

The battery case unlocking apparatus of claim 6, wherein, the hollow shaft is provided with a secondary leading hole, the secondary leading hole extends along the extending/retracting direction of the extensible/retractable rod, one end of the transmission mechanism passes through and is capable of sliding along the secondary leading hole, and the connection location between one end of the transmission mechanism and the extensible/retractable rod is located in the hollow shaft.

### Claim 8 (depends on 6)

The battery case unlocking apparatus of claim 6 wherein, one end of the hollow shaft away from the mount is connected with a fixed base, a second reset spring is sleeved outside the hollow shaft, one end of the second reset spring is connected with the fixed base, and the other end of the second reset spring is connected with one end of the transmission mechanism.

### Claim 9 (depends on 6)

The battery case unlocking apparatus of claim 6, wherein, the extensible/retractable rod comprises a pressing part and a transmission shaft, the transmission shaft passes through the hollow shaft, the pressing part passes through one end of the mount away from the hollow shaft, the transmission shaft is connected with one end of the transmission mechanism, and the pressing part is abutting against the end part at the end of the transmission shaft away from the transmission mechanism.

### Claim 10 (depends on 9)

The battery case unlocking apparatus of claim 9, wherein, the pressing part comprises a button, a flange, a concave part and a butting pole, the concave part is arranged at one end of the button close to the transmission shaft, the flange is arranged around the concave part, and the butting pole passes through the button and is abutting against the transmission shaft.

### Claim 11 (depends on 1)

The battery case unlocking apparatus of claim 1, wherein:
the locking mechanism comprises a locking box and a linkage part, a locking bracket, a retaining locking tongue and a main locking tongue arranged within the locking box;
the linkage part is connected with one end of the transmission mechanism away from the extensible/retractable mechanism;
one end of the retaining locking tongue is fixed at the locking box, the other end of the retaining locking tongue may stretch out the locking box elastically;
the locking bracket is clamped on the linkage part, the locking bracket is connected with the retaining locking tongue, the movement of the transmission mechanism drives the linkage part and makes the locking bracket extend/retract along the extending/retracting direction of the retaining locking tongue;
the main locking tongue is connected with the locking bracket, and the extending/retracting movement of the locking bracket drives the main locking tongue stretches out or retract from the locking box.

### Claim 12 (depends on 11)

The battery case unlocking apparatus of claim 11, wherein:
the linkage part comprises an unlocking push rod, an unlocking swing rod and a locking swing rod;
the unlocking push rod is connected with one end of the transmission mechanism and moves along the moving direction of the transmission mechanism;
the unlocking swing rod is connected with the unlocking push rod, the unlocking swing rod is pin-jointed with a swing shaft fixed on the locking box, the movement of the unlocking push rod drives the unlocking swing rod to swing around the swing shaft;
one end of the locking swing rod is pin-jointed with a spin shaft fixed on the locking box, and the other end of the locking swing rod is arranged at one end of the unlocking swing rod away from the unlocking push rod;
the locking bracket is clamped on one end of the locking swing rod away from the unlocking swing rod, and the locking swing rod rotates about the spin shaft and drives the locking bracket to move along the extending/retracting direction of the retaining locking tongue.

### Claim 13 (depends on 11)

The battery case unlocking apparatus of claim 11, wherein, a locking piece is fixed on the locking bracket, the locking piece is provided with a sliding jaw and a stop jaw, the sliding jaw is linked with the stop jaw, the retaining locking tongue is provided with a sliding slope, and the sliding jaw slides along the sliding slope to drive the stop jaw to enter or exit a retracting path of the main locking tongue.

### Claim 14 (depends on 11)

The battery case unlocking apparatus of claim 11, wherein, the locking box is also provided with a safety shaft, the safety shaft passes through the locking box and stretches out the locking box, the safety shaft may extend or retract along the axis direction, the safety shaft rotates from an unlock position to a lock position by self-rotation, the safety shaft is provided with a locking pole, and. when the safety shaft rotates to the lock position, the main locking tongue stretches out of the locking box, and the locking pole is against the back end of the main locking tongue.

### Claim 15 (depends on 14)

The battery case unlocking apparatus of claim 14, wherein, the safety shaft is provided with an induction pole, the locking box is provided with a sensor, the sensor is used for detecting the position of the induction pole, and when the safety shaft rotates to the lock position, the sensor is facing the induction pole directly.

### Claim 16 (depends on 14)

The battery case unlocking apparatus of claim 14, wherein, a pressing plate is fixed on the inner surface of the locking box away from the body of the battery case, the pressing plate is provided with an unlock position and a lock position, the safety shaft is provided with a block pole, the block pole rotates along with the safety shaft and is used for switching between the unlock position and lock position.

### Claim 17 (depends on 5)

The battery case unlocking apparatus of claim 5, wherein, the battery case unlocking apparatus also comprises a housing, the transmission mechanism and the locking mechanism are arranged within the housing, and the mount and the extensible/retractable mechanism are extensible/retractable arranged along the extending or retracting direction of the extensible/retractable mechanism in the housing.

### Claim 18 (depends on 5)

The battery case unlocking apparatus of claim 5, wherein, the mount comprises an electromagnetic chuck, the electromagnetic chuck is sleeved outside one end of the extensible/retractable mechanism away from the transmission mechanism.

### Claim 19 (depends on 5)

A battery case, wherein, the battery case comprises:
a body;
a battery case unlocking apparatus of claim 5;
the mount is arranged at one side of the extensible/retractable mechanism away from the body, the extensible/retractable mechanism and the transmission mechanism are arranged at the end part of the body, the locking mechanism is arranged at the side part of the body;
the extensible/retractable mechanism perform extending or retracting movement relative to the end part of the body, and the transmission mechanism moves along the end part of the body.

### Claim 20 (depends on 19)

The battery case of claim 19, wherein:
the number of the locking mechanisms is two, the two locking mechanism are relatively arranged at two side parts of the body;
the number of the transmission mechanisms is two, the two transmission mechanism are located at two sides of the extensible/retractable mechanism respectively;
the extensible/retractable mechanism drives the two locking mechanisms to lock or unlock through the two transmission mechanisms simultaneously.

### Claim 21 (depends on 19)

A quick battery case replacement system, wherein, the quick battery case replacement system comprises:
a battery holder, a replacement device and a battery case of claim 19;
the battery holder is provided with a locking part, the locking mechanism is in locking coordination with the locking part;
the replacement device comprises a replacement device chuck and an unlocking rod which extensible or retractable passes through the replacement device chuck, the unlocking rod is arranged corresponding to the extensible/retractable mechanism, the stretching movement of the unlocking rod is used to push the extensible/retractable mechanism to retract, drive the locking mechanism and the locking part to unlock, and the replacement device is connected to the battery case through the attracting of the replacement device chuck and the mount.