Battery box for a traction battery

Patent metadata

Field	Value
Publication number	US-2019044116-A1
Application number	US-201816055095-A
Country	US
Kind code	A1
Filing date	Aug 4, 2018
Priority date	Aug 4, 2017
Publication date	Feb 7, 2019
Grant date	—

Abstract

A battery box for a traction battery of an electric or hybrid motor vehicle may include a plurality of bracing elements secured to an associated node element of a plurality of node elements on each side and arranged to define a lattice structure. The plurality of node elements and the plurality of bracing elements may each have a respective hollow profile. The plurality of bracing elements and the plurality of node elements may externally delimit at least one cube-shaped accommodation space. A battery module of a traction battery may be braceable and securable in the at least one cube-shaped accommodation space.

First claim

1 . A battery box for a traction battery of an electric or hybrid motor vehicle, comprising:
a plurality of bracing elements secured to an associated node element of a plurality of node elements on each side and arranged to define a lattice structure; the plurality of node elements and the plurality of bracing elements each having a respective hollow profile; and the plurality of bracing elements and the plurality of node elements externally delimiting at least one cube-shaped accommodation space, wherein a battery module of a traction battery is braceable and securable in the at least one cube-shaped accommodation space.

2 . The battery box according to claim 1 , wherein at least one of:
the respective hollow profile includes an outer wall delimiting an inner space of the respective hollow profile; and the respective hollow profile includes the outer wall and an inner wall, wherein an outer inner space is defined between the outer wall and the inner wall, and the inner space is delimited by the inner wall.

3 . The battery box according to claim 1 , wherein each of the plurality of node elements include a first connecting structure and each of the plurality of bracing elements includes a second connecting structure complementing the first connecting structure, wherein the plurality of bracing elements are secured to the associated node element in form-fitting manner via the first connecting structure and the second connecting structure.

4 . The battery box according to claim 1 , wherein the plurality of bracing elements are secured to the associated node element in at least one of a materially bonded manner, a force-fitting manner, and a form-fitting manner.

5 . The battery box according to claim 2 , further comprising at least one fluid line node arranged in the inner space of a respective node element of the plurality of node elements and at least one fluid line arranged in the inner space of a respective bracing element of the plurality of bracing elements, wherein the at least one fluid line node and the at least one fluid line are secured to and in fluid communication with each other.

6 . The battery box according to claim 5 , wherein the at least one fluid line node and the at least one fluid line have complementary plug-in contours, via which the at least one fluid line node and the at least one fluid line are connected to each other in a form-fitting manner and a fluid-conducting manner.

7 . The battery box according to claim 5 , wherein the at least one fluid line node and the at least one fluid line are secured to each other in a fluid-conducting and materially bonded manner.

8 . The battery box according to claim 2 , further comprising at least one electrical wire node arranged in the inner space of a respective node element of the plurality of node elements and at least one electric wire in the inner space of a respective bracing element of the plurality of bracing elements, wherein the at least one electrical wire node and the at least one electric wire are connected to each other electrically conductively and in at least one of a materially bonded manner, a form-fitting manner, and a force-fitting manner.

9 . The battery box according to claim 2 , wherein at least one of:
one of the inner space and the outer inner space of the plurality of node elements are filled with a structural filler material; and one of the inner space and the outer inner space of the plurality of bracing elements are filled with the structural filler material.

10 . The battery box according to claim 9 , wherein the structural filler material includes at least one of a metallic foam, a resin-based foam, and a plastic-based foam.

11 . The battery box according to claim 9 , wherein the structural filler material includes at least one of a metallic packing material and a plastic-based packing material.

12 . The battery box according to claim 1 , wherein at least one of i) the plurality of node elements and ii) the plurality of bracing elements are composed of at least one of a metal and a plastic.

13 . The battery box according to claim 1 , wherein the plurality of node elements include a plurality of casted node elements.

14 . The battery box according to claim 1 , wherein the plurality of bracing elements include at least one of i) a plurality of rolled bracing elements and ii) a plurality of extruded bracing elements.

15 . The battery box according to claim 1 , further comprising at least one battery module arranged in the at least one cube-shaped accommodation space.

16 . The battery box according to claim 1 , further comprising a housing in which the lattice structure is secured in one of a form-fitting manner and a force-fitting manner.

17 . The battery box according to claim 4 , wherein the plurality of bracing elements are secured to the associated node element via at least one of a welding connection, a soldering connection, an adhesive bonding connection, a mechanical pressing connection, a clamping connection, and a bolt connection.

18 . The battery box according to claim 12 , wherein at least one of i) the plurality of node elements and ii) the plurality of bracing elements are composed of at least one of steel, aluminum, fibre reinforced plastic, and a polyamide

19 . A battery box comprising:
a plurality of bracing elements secured to an associated node element of a plurality of node elements on each side, the plurality of bracing elements and the plurality of node elements structured and arranged to define a lattice structure and delimit at least one cube-shaped accommodation space, the at least one cube-shaped accommodation space configured such that a battery module of a traction battery is braceable and securable therein; each of the plurality of node elements including a first connecting structure and each of the plurality of bracing elements inducing a second connecting structure complementing the first connecting structure, the plurality of bracing elements secured to the associated node element in form-fitting manner via the first connecting structure and the second connecting structure. the plurality of node elements and the plurality of bracing elements each having a respective hollow profile; wherein at least one of:
the respective hollow profile includes an outer wall delimiting the inner space of the respective hollow profile; and
the respective hollow profile includes the outer wall and an inner wall, an outer inner space defined between the outer wall and the inner wall, and the inner space delimited by the inner wall;
wherein at least one fluid line node is arranged in an inner space of a respective node element of the plurality of node elements and at least one fluid line is arranged in an inner space of a respective bracing element of the plurality of bracing elements, the at least one fluid line node and the at least one fluid line secured to and in fluid communication with each other.

20 . A battery box comprising:
a plurality of bracing elements secured to an associated node element of a plurality of node elements on each side, the plurality of node elements and the plurality of bracing elements each having a respective hollow profile, the plurality of bracing elements and the plurality of node elements structured and arranged to define a lattice structure and delimit at least one cube-shaped accommodation space, the at least one cube-shaped accommodation space configured such that a battery module of a traction battery is braceable and securable therein; a housing in w

Assignees

• Mahle Int Gmbh

Inventors

• Schiehlen Thomas

Classifications

• B60S5/06 Primary

  Supplying batteries to, or removing batteries from, vehicles (exchanging batteries for electric propulsion of vehicles B60L53/80) · CPC title

• H01M2220/20

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

• H01M10/613

  Cooling or keeping cold · CPC title

• B60L50/64

  Constructional details of batteries specially adapted for electric vehicles · CPC title

• H01M10/625 Primary

  Vehicles · CPC title