# US 11,444,355 B2 · Battery device, battery system and method for assembling a battery system

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- Number: US 11,444,355 B2
- Document ID: US11444355B2
- Status: Granted
- Kind: B2
- Application number: 16/615,569
- Filed: 2018-05-09
- Published: 2020-07-09
- Granted: 2022-09-13
- Earliest claimed: 2017-06-21
- Assignees: Audi AG
- Applicants: Audi AG
- Inventors: Uwe Opitz; Michael Hinterberger; Bernhard Rieger
- Web page: https://patentgrep.com/patent/US11444355B2

## CPC

- H01M 10/425: {Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing (printed circuits H05K1/00)}
- H01M 10/482: {for several batteries or cells simultaneously or sequentially}
- H01M 50/209: adapted for prismatic or rectangular cells (H01M50/216 takes precedence)
- H01M 50/233: characterised by physical properties of casings or racks, e.g. dimensions
- H01M 50/24: adapted for protecting batteries from their environment, e.g. from corrosion (thermal insulation H01M10/658)
- H01M 50/296: characterised by terminals of battery packs (terminals of batteries H01M50/543)
- H01M 50/51: Connection only in series
- H01M 2010/4271: {Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing}
- H01M 2220/10: Batteries in stationary systems, e.g. emergency power source in plant
- H01M 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY

## Abstract

A battery device with a battery module that includes multiple secondary cells, and the battery module is provided with a positive pole and a negative pole. Moreover, the battery module is placed inside an insulating housing with a contact element, which is connected to the positive pole and to the negative pole and through which the positive pole and the negative pole may be connected to an electronics unit of a battery system. Moreover, the invention relates to a battery system and a method for assembling a battery system.

## Claims

### Claim 1

A battery system, comprising:
a battery module with multiple secondary cells, wherein each secondary cell of the multiple battery cells is located in a respective receptacle;
a framework having a rear wall configured to combine the multiple secondary cells, wherein each secondary cell is configured to be inserted into the framework in a plug and play manner, said battery module is provided with a positive pole and a negative pole, the battery module is located inside an insulating housing with a contact element, which is connected to the positive pole and the negative pole and through which the positive pole and the negative pole are configured to be connected to an electronics unit that is configured to recognize individual cell voltages of each secondary cell.

### Claim 2 (depends on 1)

The battery system according to claim 1, wherein the housing is an acid-proof material.

### Claim 3 (depends on 1)

The battery system according to claim 1, wherein a traction battery or a starter battery for a motor vehicle is received in the insulating housing as the battery module.

### Claim 4 (depends on 1)

The battery system according to claim 1, wherein the contact element comprises a contactor.

### Claim 5 (depends on 1)

The battery system of claim 1, wherein
the contact element is configured to be connected to the electronics unit via a contact device.

### Claim 6 (depends on 5)

The battery system according to claim 5, wherein the contact device comprises a contactor.

### Claim 7 (depends on 5)

The battery system according to claim 5, wherein the battery system is designed as a stationary storage battery for the purpose of balancing out the load spikes of a mains grid.