Connector system, battery module, method for forming a tap, and operating device

Patent metadata

Field	Value
Publication number	US-10673053-B2
Application number	US-201815988294-A
Country	US
Kind code	B2
Filing date	May 24, 2018
Priority date	Jan 25, 2016
Publication date	Jun 2, 2020
Grant date	Jun 2, 2020

Abstract

A connector system for a battery module has a number of cell connectors of different successive cell connector types in order to form one or more electric contacts with one or more connections of one or more individual cells of the battery module, in particular for a power-transmitting tap in which each cell connector of a subsequent cell connector type is designed to electrically connect a larger number of connections of individual cells than the number of connections which can be connected by each cell connector of a preceding cell connector type. Each cell connector of a preceding cell connector type can be stacked and/or nested on a cell connector of a subsequent cell connector type in an assembly direction perpendicular to the main direction of extension.

First claim

What is claimed is:

1. A connector system for a battery module, comprising:
a plurality of modular nesting cell connectors, each having a common extension direction, and each being of a connector type from among different connector types, the connector types including:
an n-th connector type configured to electrically connect terminals of 2n successive cells, where n is a positive integer,
an m-th connector type configured to electrically connect terminals of 2m successive cells, where m is a positive integer greater than n,

wherein cell connectors of the n-th connector type are nestable on top of cell connectors of the m-th connector type in an assembly direction perpendicular to the extension direction, and
wherein the plurality of cell connectors includes a first connector configured to electrically connect terminals of exactly two successive cells, the first connector having a module terminal that provides a common power-transmitting tap via nesting of the plurality of cell connectors.

2. The connector system as claimed in claim 1 , wherein cell connectors of the n-th and m-th connector types respectively include 2n and 2m terminal contact sections linearly arrayed in the extension direction each two successive terminal contact sections being connected by an intervening compensating section.

3. The connector system as claimed in claim 2 ,
wherein the contact sections are planar plate structures,
wherein the contact sections are of at least one of: trapezoidal and rectangular form, and
wherein the contact sections have at least one of: a long side arranged along the extension direction, and a short side arranged along a secondary extension direction that is orthogonal, to the extension direction and to the assembly direction.

4. The connector system as claimed in claim 1 ,
wherein the contact sections are planar plate structures,
wherein the contact sections are of at least one of: trapezoidal and rectangular form, and
wherein the contact sections have at least one of: a long side arranged along the extension direction, and a short side arranged along a secondary extension direction that is orthogonal, to the extension direction and to the assembly direction.

5. The connector system as claimed in claim 2 , wherein the compensating sections of the cell connectors of each connector type are identical, symmetrical and/or of mutually similar shape.

6. The connector system as claimed in claim 3 , wherein the compensating sections of the cell connectors of each connector type are identical, symmetrical and/or of mutually similar shape.

7. The connector system as claimed in claim 2 , wherein the compensating sections of cell connectors of the n-th connector type are of a mutually similar shape with the compensating sections of cell connectors of the m-th connector type, such that the compensating sections of cell connectors of the n-th a preceding cell connector type is are at least partially accommodated in the compensating sections of cell connectors of the m-th connector type.

8. The connector system as claimed in claim 6 , wherein the compensating sections of cell connectors of the n-th connector type are of a mutually similar shape with the compensating sections of cell connectors of the m-th connector type, such that the compensating sections of cell connectors of the n-th connector type is are at least partially accommodated in the compensating sections of cell connectors of the m-th connector type.

9. The connector system as claimed in claim 2 , wherein the compensating sections comprise an elastic element.

10. The connector system as claimed in claim 8 , wherein the compensating sections comprise an elastic element.

11. The connector system as claimed in claim 2 , wherein the compensating sections is at least partially include a wave form or half-wave form, with a U-shape, V-shape or bell shape, convexly on an underside and/or concavely on the upper side of the compensating sections in the assembly direction.

12. The connector system as claimed in claim 9 , wherein the compensating sections is at least partially include a wave form or half-wave form, with a U-shape, V-shape or bell shape, convexly on an underside and/or concavely on the upper side of the respective compensating sections in the assembly direction.

13. A battery module, comprising:
a plurality of individual cells, each having first and second terminals and
the cell connectors of the connector system as claimed in claim 1 ,
wherein for the common power-transmitting tap, electrical contacts are formed with a plurality of terminals of the individual cells of the battery module by a plurality of cell connectors of different successive cell connector types in the connector system, and
wherein n and m are consecutive integers.

14. A method for forming a power-transmitting tap of a battery module comprised of a plurality of individual cells, having terminals, the method comprising the steps of:
providing the connector system of claim 1 , wherein n and m are successive integers;
nesting the plurality of cell connectors such that an n-th type cell connector is nested on top of an m-th type cell connector, and such that the m-th type cell connector directly contacts the terminals of the individual cells; and
forming electrical contacts with the terminals on the individual cells of the battery module, via the plurality of nested cell connectors.

15. An operating device, comprising:
a drive system; and
the battery module as claimed in claim 13 , by which the drive system is supplied with electrical energy.

16. The operating device as claimed in claim 15 , wherein the operating device is an electric or hybrid vehicle.

Assignees

• Bayerische Motoren Werke Ag

Inventors

• Idikurt Tuncay
• Kotter Philip
• Muck Alexander
• Zachar Christian

Classifications

• H01M2/206 Primary

  Electricity · mapped topic

• H01M2220/20

  Batteries in motive systems, e.g. vehicle, ship, plane · CPC title

• H01M2/1077

  Electricity · mapped topic

• B60L50/50

  using propulsion power supplied by batteries or fuel cells · CPC title

• H01R11/288 Primary

  Interconnections between batteries · CPC title