Modular system for a battery

• US 8,757,310 B2
• Filed: 07/09/2012
• Issued: 06/24/2014
• Est. Priority Date: 07/07/2011
• Status: Active Grant

• Current Assignee: Dr Ing hc F Porsche AG (Volkswagen AG)
• Original Assignee: Dr Ing hc F Porsche AG (Volkswagen AG)
• Inventors: Hofmann, Juergen
• Primary Examiner(s): WALTERS, JOHN DANIEL
• Application Number:
  US13/543,929
• Publication Number:
  US 20130008731A1
• Time in Patent Office: 715 Days
• Field of Search: 180/68.5, 180/2.1, 903/907, 429/149, 429/151, 429/123, 429/129, 429/142
• US Class Current: 180/68.5
• CPC Class Codes: B60L 50/64 Constructional details of batteries specially adapted for electric vehicles
• CPC Class Codes: H01M 50/103 prismatic or rectangular H01M50/109, H01M50/11 take precedence
• CPC Class Codes: H01M 50/209 adapted for prismatic or rectangular cells H01M50/216 takes precedence
• CPC Class Codes: H01M 50/242 adapted for protecting batteries against vibrations, collision impact or swelling
• CPC Class Codes: 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
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 90/12 Electric charging stations

Abstract

A modular system (1) for a battery (2) has a battery housing (3), at least one first battery module (4) having a number n of battery cells (5) and at least one further battery module (6) having a higher number n+x or a lower number n−x of battery cells (5) can be arranged in the battery housing (3). In this case, one first battery module (4) can be arranged in a space-filling manner within the battery housing (3), or one further battery module (6) together with at least one compensation element (7) of the modular system (1) can be arranged in a space-filling manner within the battery housing (3).

Claims

1. A modular system for a traction battery of a motor vehicle, comprising:

a battery housing;

at least one first battery module that can be arranged in the battery housing and has a first number of battery cells to fill the battery housing;

at least one further battery module that can be arranged in the battery housing and has a second number of battery cells that is less than the first number so that the second battery module does not fill the battery housing; and

at least one compensation element that is not a battery cell and that can be arranged with the second battery module in the battery housing so that the at least one compensation element and the further battery module fill the battery housing.

2. The modular system of claim 1, wherein the compensation element has a size and form corresponding to a size and form of one of the battery cells.

3. The modular system of claim 2, wherein the compensation element has a fillable cavity that is at least partly filled with a gas, a liquid or a solid.

4. The modular system of claim 1, wherein the compensation element is a crash or deformation element.

5. The modular system of claim 1, wherein the compensation element is resilient.

6. The modular system of claim 1, wherein the battery modules are arranged parallel to one another within the battery housing.

7. The modular system of claim 1, wherein the first battery module has thirteen battery cells and the further battery module has twelve battery cells.

8. The modular system of claim 1, wherein the battery cells of the first battery module or of the further battery module are connected electrically in parallel or in series with one another.

9. The modular system of claim 1, wherein the battery cells of at least one of the battery modules have substantially identical forms and sizes.

10. A battery constructed according to a modular system of claim 1, comprising at least one further battery module and at least one compensation element.

11. A modular system of traction batteries of a motor vehicle, comprising:

substantially identical rectangular battery housings, each of the housings having pairs of opposed side walls defining an empty space within the respective housing, the empty space having a length and a width;

at least a first of the batteries of the modular system having a first rectangular array of battery cells disposed in the empty space with the battery cells arranged in a length direction defining a total length substantially equal to the length of the empty space in the housing and the battery cells arranged in a width direction defining a total width substantially equal to the width of the empty space in the housing so that the battery cells of the first battery substantially fill the empty space; and

at least a second of the batteries of the modular system having a second rectangular array of the battery cells with at least one fewer of the battery cells being arranged in a length direction than the battery cells arranged in the length direction in the first battery and at least one resilient compensation element that is not a battery cell disposed in an empty space defined by the smaller number of battery cells of the second of the batteries, the compensation element being dimensioned so that a combined length of the battery cells and the compensation element substantially equals the length of the empty space in the housing and so that the battery cells and the compensation element of the second battery substantially fill the empty space.

12. The modular battery system of claim 11, wherein the compensation element is adjacent one of the walls of the housing.

13. The modular battery system of claim 11, wherein the compensation element and the battery cells are substantially rectangular.

14. The modular battery system of claim 11, the battery cells have substantially identical sizes and shapes.

15. The modular battery system of claim 14, wherein the compensation element comprises a plurality of compensation element components, each of the compensation element components having a size and shape substantially conforming to the size and shape of each of the battery cells.