# US 2025/0145052 A1 · Redundant electrical power system for vehicle

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- Number: US 2025/0145052 A1
- Document ID: US20250145052A1
- Status: Published application
- Kind: A1
- Application number: 18/504,202
- Filed: 2023-11-08
- Published: 2025-05-08
- Earliest claimed: 2023-11-08
- Assignees: GM Global Technology Operations LLC
- Applicants: GM Global Technology Operations LLC
- Inventors: Mohamed Kamel; Anthony J. Corsetti; Robert J. Heydel; Jonathan O. Conell; Robert A.. DeStefano
- Web page: https://patentgrep.com/patent/US20250145052A1

## CPC

- B60L 58/20: having different nominal voltages
- B60L 1/00: Supplying electric power to auxiliary equipment of vehicles (circuit arrangements for charging batteries H02J7/00)
- B60L 1/003: {to auxiliary motors, e.g. for pumps, compressors}
- B60L 50/60: using power supplied by batteries (in combination with fuel cells B60L50/75)
- B60R 16/03: for supply of electrical power to vehicle subsystems {or for (circuit arrangements for charging batteries H02J7/00)}
- H02J 1/10: Parallel operation of DC sources
- H02J 3/322: {the battery being on-board an electric or hybrid vehicle, e.g. vehicle to grid arrangements [V2G], power aggregation, use of the battery for network load balancing, coordinated or cooperative battery charging}
- 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
- B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY

## Abstract

An electrical power system. The electrical power system may include a rechargeable energy storage system (RESS) having a high voltage (HV) interface configured for exchanging HV power with one or more loads and a low voltage (LV) interface configured for exchanging LV power with a plurality of electrical grids a redundant distribution system having a plurality of busbars configured for redundantly connecting the electrical grids with the LV interface such that each of the electrical grids remains operable and connected to the LV interface during a disconnect event.

## Claims

### Claim 1

An electrical power system for a vehicle having a traction motor and a plurality of electrical grids, comprising:
a rechargeable energy storage system (RESS) having a high voltage (HV) interface configured for exchanging HV power with the traction motor and a low voltage (LV) interface configured for exchanging LV power with the electrical grids; and
a redundant distribution system having a plurality of busbars configured for redundantly connecting the electrical grids with the LV interface such that each of the electrical grids remains operable and connected to the LV interface during a disconnect event.

### Claim 2 (depends on 1)

The electrical power system according to claim 1, wherein:
the electrical grids each include a LV bus configured for distributing the LV power to one or more loads; and
the busbars are arranged in a redundant configuration characterized by each of the LV buses being independently connectable to two or more of the busbars.

### Claim 3 (depends on 2)

The electrical power system according to claim 2, further comprising:
a plurality of aggregating units each having a plurality of inputs commonly connectable to an output, wherein the aggregating units each include the output connected to one of the LV buses of the electrical grids and the inputs separately connected to one of the two or more of the busbars.

### Claim 4 (depends on 3)

The electrical power system according to claim 3, wherein:
the RESS includes a plurality of cell groups and a plurality of power converters, the power converters each operable for converting electrical power from one or more of the cell groups into a plurality of LV outputs, each of the LV outputs correspondingly delivering LV power to a connected to one of the busbars.

### Claim 5 (depends on 4)

The electrical power system according to claim 4, wherein:
the electrical grids include a first grid and a second grid; and
the aggregating units include a first unit and a second unit, wherein:
the unit inputs of the first unit include a first primary input and a first secondary input;
the unit output of the first unit connects to the first grid;
the unit inputs of the second unit include a second primary input and a second secondary input; and
the unit output of the second unit connects to the second grid.

### Claim 6 (depends on 5)

The electrical power system according to claim 5, wherein:
the LV outputs of each of the power converters include a first LV output and a second LV output; and
the busbars include a first busbar and a second busbar, wherein:
the first busbar connects to each of the first LV outputs and the first and second primary inputs; and
the second busbar connects to each of the second LV outputs and the first and second secondary inputs.

### Claim 7 (depends on 5)

The electrical power system according to claim 5, further comprising:
the LV outputs of each of the power converters including a first LV output and a second LV output;
a junction box having a first junction input connectable to a junction output via a first switch or fuse and a second junction input connectable to the junction output via a second switch or fuse; and
the busbars including a first busbar, a second busbar, a third busbar, wherein:
the first busbar connects to each of the first LV outputs, the first primary input, and the first junction input;
the second busbar connects to each of the second LV outputs, the second secondary input, and the second junction input; and
the third busbar connects to the first secondary input, the second primary input, and the junction output.

### Claim 8 (depends on 5)

The electrical power system according to claim 5, wherein:
the LV outputs of each of the power converters include a first LV output, a second LV output, and a third LV output; and
the busbars include a first busbar, a second busbar, and a third busbar, wherein:
the first busbar connects to each of the first LV outputs and the first primary input;
the second busbar connects to each of the second LV outputs and the second secondary input; and
the third busbar connects to each of the third LV outputs, the first secondary input, and the second primary input.

### Claim 9 (depends on 5)

The electrical power system according to claim 5, further comprising:
the LV outputs of each of the power converters including a first LV output, a second LV output, and a third LV output;
a junction box having a junction input connected to a first junction output via a first switch or fuse and a second switch or fuse and to a second junction output via the first switch or fuse and a third switch or fuse; and
the busbars including a first busbar, a second busbar, a third busbar, wherein:
the first busbar connects to each of the first LV outputs and the first primary input;
the second busbar connects to each of the second LV outputs and the second secondary input; and
the third busbar connects to each of the third LV outputs, the first secondary input, the second primary input, the junction input and the first and second junction outputs.

### Claim 10 (depends on 5)

The electrical power system according to claim 5, wherein:
the LV outputs of a primary side of the power converters each include a first LV output and a second LV output, and the LV outputs of a secondary side of the power converters each include a third LV output and a fourth LV output; and
the busbars include a first busbar, a second busbar, a third busbar, and a fourth busbar, wherein:
the first busbar connects to each of the first LV outputs and the first primary input;
the second busbar connects to each of the second LV outputs and the first secondary input;
the third busbar connects to each of the third LV outputs and the second secondary input; and
the fourth busbar connects to each of the fourth LV outputs and the first primary input.

### Claim 11 (depends on 5)

The electrical power system according to claim 5, wherein:
the LV outputs of a primary side of a first plurality of the power converters each include a first LV output and a second plurality of the power converters each include a second LV output, and the LV outputs of a secondary side of a third plurality of the power converters each include a third LV output and a fourth plurality of the power converters each include a fourth LV output; and
the busbars include a first busbar, a second busbar, a third busbar, and a fourth busbar, wherein:
the first busbar connects to each of the first LV outputs and the second secondary input;
the second busbar connects to each of the second LV outputs and the second primary input;
the third busbar connects to each of the third LV outputs and the first secondary input; and
the fourth busbar connects to each of the fourth LV outputs and the first primary input.

### Claim 12 (depends on 4)

The electrical power system according to claim 4, wherein:
the electrical grids include a first grid and a second grid; and
the aggregating units include a first unit and a second unit, wherein:
the unit inputs of the first unit include a first primary input, a first secondary input, and a first tertiary input;
the unit output of the first unit connects to the first grid;
the unit inputs of the second unit include a second primary input, a second secondary input, and a second tertiary input; and
the unit output of the second unit connects to the second grid;
the LV outputs of a primary side of the power converters each include a first LV output and a second LV output, and the LV outputs of a secondary side of the power converters each include a third LV output and a fourth LV output; and
the busbars include a first busbar, a second busbar, a third busbar, a fourth busbar, and a fifth busbar, wherein:
the first busbar connects to each of the first LV outputs and the second primary input;
the second busbar connects to each of the second LV outputs and the second secondary input;
the third busbar connects to each of the third LV outputs and the first secondary input;
the fourth busbar connects to each of the fourth LV outputs and the first primary input; and
the fifth busbar connects to the first tertiary input and the second tertiary input.

### Claim 13 (depends on 3)

The electrical power system according to claim 3, wherein:
the aggregating units each include a plurality of fuses for connecting the one of the LV buses with the two or more of busbars.

### Claim 14 (depends on 3)

The electrical power system according to claim 3, wherein:
the aggregating units each include a plurality of switches for selectively connecting and disconnecting the inputs and the output.

### Claim 15 (depends on 2)

The electrical power system according to claim 2, wherein:
the busbars each have approximately the same length and the same impedance.

### Claim 16 (depends on 2)

The electrical power system according to claim 2, wherein:
the disconnect event corresponds with one of the busbars experiencing an open circuit condition.

### Claim 17 (depends on 2)

The electrical power system according to claim 2, wherein:
the disconnect event corresponds with one of the LV outputs experiencing an open circuit condition.

### Claim 18

An electrical power system for a vehicle having a traction motor and a plurality of electrical grids, comprising:
a rechargeable energy storage system (RESS) having a high voltage (HV) interface configured for exchanging HV power with the traction motor and a low voltage (LV) interface configured for exchanging LV power with the electrical grids, wherein the electrical grids each include a LV bus configured for distributing the LV power to one or more loads; and
a redundant distribution system having a plurality of busbars arranged in a redundant configuration characterized by each of the LV buses being independently connectable to the LV interface via two or more of the busbars such that each of the electrical grids remains operable and connected to the LV interface during a disconnect event whereby one of the busbars experiences an open circuit condition.

### Claim 19 (depends on 18)

The electrical power system according to claim 18, further comprising:
a plurality of aggregating units having a plurality of unit inputs commonly connectable to a unit output, wherein the aggregating units each include the unit output connected to one of the LV buses of the electrical grids and the unit inputs separately connected to one of the two or more of the busbars connectable thereto.

### Claim 20

An electrical power system, comprising:
a rechargeable energy storage system (RESS) having a high voltage (HV) interface configured for exchanging HV power with one or more loads and a low voltage (LV) interface configured for exchanging LV power with a plurality of electrical grids; and
a redundant distribution system having a plurality of busbars configured for redundantly connecting the electrical grids with the LV interface such that each of the electrical grids remains operable and connected to the LV interface during a disconnect event.