# US 2025/0153601 A1 · Balance detection method and apparatus and station control system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0153601 A1 - Document ID: US20250153601A1 - Status: Published application - Kind: A1 - Application number: 19/025,164 - Filed: 2025-01-16 - Published: 2025-05-15 - Earliest claimed: 2022-07-21 - Assignees: Contemporary Amperex Technology (Hong Kong) Limited - Applicants: Contemporary Amperex Technology (Hong Kong) Limited - Inventors: Weifeng CHEN; Shibiao QUE; Kangyu WANG; Dewei CHEN - Web page: https://patentgrep.com/patent/US20250153601A1 ## CPC - B60L 53/80: Exchanging energy storage elements, e.g. removable batteries - B66C 13/16: Applications of indicating, registering, or weighing devices (in crane hooks B66C1/40; in safety gear B66C15/00; weighing-apparatus G01G; remote indicating in general G08) - B66C 13/18: Control systems or devices (exclusively for rope, cable, or chain winding mechanisms B66D1/40) - B66C 15/065: {electrical} - G01M 1/14: Determining imbalance (G01M1/30 takes precedence) - 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) - B60L 2240/26: Vehicle weight - B60L 2240/70: Interactions with external data bases, e.g. traffic centres - H01M 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane - 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 - B66C: CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES ({specially adapted for lifting invalids A61G7/10;} rope, cable, or chain winding mechanisms, braking or detent devices therefor B66D; specially adapted for nuclear reactors G21) - G01M: TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY ## Abstract A balance detection method and apparatus and a station control system are provided to effectively improve safety performance of electric devices in the battery swapping process. The method includes: in a process of swapping a battery of an electric device, obtaining first data output by a first sensor; and determining, based on the first data, whether a mounting/dismounting apparatus is in a balanced state, where the mounting/dismounting apparatus is configured to dismount a battery to be dismounted from the electric device and mount a battery to be mounted onto the electric device. ## Claims ### Claim 1 A balance detection method, comprising: in a process of swapping a battery of an electric device, obtaining first data output by a first sensor; and determining, based on the first data, whether a mounting/dismounting apparatus is in a balanced state, wherein the mounting/dismounting apparatus is configured to dismount a battery to be dismounted from the electric device and mount a battery to be mounted onto the electric device. ### Claim 2 (depends on 1) The method according to claim 1, wherein the first sensor is a weighing sensor. ### Claim 3 (depends on 2) The method according to claim 2, wherein: the weighing sensor is disposed on a first surface of a connector used for connecting the mounting/dismounting apparatus, and in a direction of gravity, the first surface is a surface of the connector closer to the battery to be dismounted or the battery to be mounted; and the first data is a weight borne by the connector. ### Claim 4 (depends on 3) The method according to claim 3, wherein the connector is one of a plurality of connectors provided for connecting the mounting/dismounting apparatus, the weighing sensor is one of a plurality of weighing sensors each provided on one of the connectors, and the first data includes a weight borne by each of the connectors. ### Claim 5 (depends on 1) The method according to claim 1, wherein determining, based on the first data, whether the mounting/dismounting apparatus is in the balanced state comprises: obtaining preset data; and determining, based on a deviation value between the first data and the preset data, whether the mounting/dismounting apparatus is in the balanced state. ### Claim 6 (depends on 5) The method according to claim 5, wherein: in a case that the deviation value is less than or equal to a first threshold, the mounting/dismounting apparatus is in the balanced state; and in a case that the deviation value is greater than the first threshold, the mounting/dismounting apparatus is in an unbalanced state. ### Claim 7 (depends on 6) The method according to claim 6, wherein the first threshold ranges from 0.1 to 0.2. ### Claim 8 (depends on 5) The method according to claim 5, wherein obtaining the preset data comprises: receiving battery information sent by the electric device, wherein the battery information comprises a specification parameter of the battery to be dismounted; and determining the preset data based on the specification parameter. ### Claim 9 (depends on 1) The method according to claim 1, further comprising: obtaining second data output by a second sensor; and after determining, based on the first data, whether the mounting/dismounting apparatus is in the balanced state, determining, based on the second data, whether the mounting/dismounting apparatus is in the balanced state. ### Claim 10 (depends on 9) The method according to claim 9, wherein the second sensor is a balance sensor, and the second data is a tilt angle of the mounting/dismounting apparatus. ### Claim 11 (depends on 10) The method according to claim 10, wherein the balance sensor is disposed on a second surface of the mounting/dismounting apparatus, and in a direction opposite the gravity, the second surface is a surface of the mounting/dismounting apparatus farther away from the battery to be dismounted or the battery to be mounted. ### Claim 12 (depends on 9) The method according to claim 9, wherein: in a case that the second data is less than or equal to a second threshold, the mounting/dismounting apparatus is in the balanced state; and in a case that the second data is greater than the second threshold, the mounting/dismounting apparatus is in an unbalanced state. ### Claim 13 (depends on 12) The method according to claim 12, wherein the second threshold is 1.3°. ### Claim 14 (depends on 9) The method according to claim 9, wherein the mounting/dismounting apparatus comprises a plurality of claw arms, the plurality of claw arms being configured to grip the battery to be dismounted and the battery to be mounted, and the method further comprises: determining expansion states of the plurality of claw arms before the plurality of claw arms grip the battery to be dismounted and the battery to be mounted; and/or determining expansion states of the plurality of claw arms after the plurality of claw arms grip the battery to be dismounted and the battery to be mounted. ### Claim 15 (depends on 14) The method according to claim 14, wherein determining the expansion states of the plurality of claw arms comprises: obtaining third data output by the second sensor; and determining the expansion states of the plurality of claw arms based on the third data, comprising: under a condition that the third data is less than or equal to the second threshold, determining that the expansion states of the plurality of claw arms are normal; or under a condition that the third data is greater than the second threshold, determining that the expansion states of the plurality of claw arms are abnormal. ### Claim 16 (depends on 14) The method according to claim 14, further comprising: receiving state information sent by the electric device, wherein the state information comprises the expansion states of the plurality of claw arms. ### Claim 17 (depends on 1) The method according to claim 1, further comprising: determining a lock state of a locking portion of the battery to be dismounted or the battery to be mounted after the mounting/dismounting apparatus dismounts the battery to be dismounted or mounts the battery to be mounted onto the electric device. ### Claim 18 (depends on 17) The method according to claim 17, wherein determining the lock state of the locking portion of the battery to be dismounted or the battery to be mounted comprises: after the mounting/dismounting apparatus dismounts the battery to be dismounted, obtaining fourth data output by the first sensor; and determining the lock state of the locking portion based on the fourth data, comprising: under a condition that a difference between the fourth data and a target weight is less than or equal to a third threshold, determining that the locking portion is in an unlocked state; or under a condition that a difference between the fourth data and a target weight is greater than a third threshold, determining that the locking portion is in a locked state; wherein the target weight is a sum of a weight of the mounting/dismounting apparatus and a weight of the battery to be dismounted. ### Claim 19 (depends on 17) The method according to claim 17, further comprising: receiving lock information sent by the electric device, wherein the lock information comprises the lock state of the locking portion. ### Claim 20 A balance detection apparatus, comprising: a processing unit configured to: in a process of swapping a battery of an electric device, obtain first data output by a first sensor; and determine, based on the first data, whether a mounting/dismounting apparatus is in a balanced state, wherein the mounting/dismounting apparatus is configured to dismount a battery to be dismounted from the electric device and mount a battery to be mounted onto the electric device.