Housing of battery module and battery module

Patent metadata

Field	Value
Publication number	US-10629871-B2
Application number	US-201715839949-A
Country	US
Kind code	B2
Filing date	Dec 13, 2017
Priority date	Dec 27, 2016
Publication date	Apr 21, 2020
Grant date	Apr 21, 2020

Abstract

The present application relates to a housing of battery module and a battery module. The housing includes a lower shell, an upper cover and two output components, the lower shell includes a lower shell body and at least one connecting member; the lower shell body is separated into accommodating chambers for accommodating bare cell; an installation site for connecting member is provided in each accommodating chamber; every two adjacent accommodating chambers are provided with one connecting member between and penetrating through the every two adjacent accommodating chambers; an installation site for output component and an output hole are provided in each of a first one and a last one of the plurality of accommodation chambers; the two output components are sealedly connected with two output holes, respectively. The battery module includes bare cells and the housing.

First claim

What is claimed is:

1. A housing of a battery module, comprising a lower shell, an upper cover and two output components, wherein the lower shell comprises a lower shell body and at least one connecting member;
the lower shell body is separated into a plurality of accommodating chambers for accommodating bare cells, the plurality of accommodating chambers is sequentially arranged along a hypothetical straight line, an opening is defined in each accommodating chamber at a same side, a plurality of injection holes communicating with external environment is defined in the lower shell body, and the plurality of injection holes corresponds to the plurality of accommodating chambers, respectively;
an installation site for connecting member is provided in each accommodating chamber, two installation sites for connecting member in two adjacent accommodation chambers are arranged opposite to each other, every two adjacent accommodating chambers are provided with one connecting member between and penetrating through the every two adjacent accommodating chambers, and the one connecting member is fixed on two installation sites for connecting member in the every two adjacent accommodating chambers, for connecting bare cells in the every two adjacent accommodating chambers in series;
an installation site for output component and an output hole are provided in each of a first one and a last one of the plurality of accommodation chambers; each output component is arranged on one installation site for output component, and extends out from the first one or the last one of the plurality of accommodation chambers through one output hole; the two output components are sealedly connected with two output holes, respectively;
the upper cover is capable of covering and matching with the lower shell body, and sealing all the openings;
the installation site for connecting member comprises a first boss, and the at least one connecting member is fixed on the first boss, and/or
the installation site for output component comprises a second boss, and each of the two output components is placed on the second boss, correspondingly.

2. The housing of a battery module according to claim 1 , wherein the installation site for output component and the installation site for connecting member are arranged along an arrangement direction of the plurality of accommodating chambers.

3. The housing of a battery module according to claim 2 , wherein the installation site for output component and the installation site for connecting member are arranged at a side of each accommodating chamber parallel to the arrangement direction of the plurality of accommodating chambers.

4. The housing of a battery module according to claim 3 , wherein
each connecting member comprises a first contact surface oriented toward the opening, and the first contact surface is used for connecting with the bare cells; and/or
each output component comprises a second contact surface oriented toward the opening, and the second contact surface is used for connecting with the bare cells.

5. The housing of a battery module according to claim 4 , wherein each output component comprises a connection plate, an electrode terminal, a sealing member and a connecting block,
the connection plate comprises a connecting portion for bare cell and a connecting portion for electrode terminal, the connecting portion for bare cell is electrically connected with the connecting portion for electrode terminal, the connecting portion for bare cell is placed on the second boss, and the contact surface for output component is located on the connecting portion for bare cell,
the electrode terminal is connected with the connecting portion for electrode terminal and extends out from a corresponding accommodation chamber through the output hole, the electrode terminal seals the output hole by the sealing member, and the connecting block is connected with the electrode terminal from an outside of the lower shell body.

6. The housing of a battery module according to claim 5 , wherein both the connecting portion for bare cell and the connecting portion for electrode terminal are sheet-like and extend along the arrangement direction of the plurality of accommodating chambers, and an orthographic projection of the connecting portion for bare cell on a plane perpendicular to the arrangement direction of the plurality of accommodating chambers is perpendicular to an orthographic projection of the connecting portion for electrode terminal on a plane perpendicular to the arrangement direction of the plurality of accommodating chambers.

7. The housing of a battery module according to claim 6 , wherein a welding slot is defined in the electrode terminal, and the connecting portion for electrode terminal extends into the welding slot and is welded with the electrode terminal.

8. The housing of a battery module according to claim 6 , wherein the connection plate further comprises a transition portion, the transition portion is sheet-like and extends along a direction perpendicular to the arrangement direction of the plurality of accommodating chambers, and the connecting portion for bare cell and the connecting portion for electrode terminal are respectively connected with the transition portion.

9. The housing of a battery module according to claim 8 , wherein a gap is defined between the second boss and the output hole, the connection plate further comprises a bending portion, the connecting portion for bare cell is connected with the transition portion by the bending portion, and the bending portion is capable of being located in the gap when the connecting portion for bare cell is placed on the second boss.

10. The housing of a battery module according to claim 1 , wherein the connecting member is pre-embedded in the lower shell body.

11. The housing of a battery module according to claim 1 , wherein a welding boss is provided on a surface of the lower shell body coordinating with the upper cover.

12. The housing of a battery module according to claim 1 , wherein the upper cover comprises a stop protrusion, and the stop protrusion is located at a side of the upper cover facing the plurality of accommodating chambers and is arranged along edges of the plurality of accommodating chambers.

13. A battery module, comprising a plurality of bare cells and the housing of a battery module according to claim 1 , wherein
each accommodating chamber accommodates at least one bare cell,
the at least one bare cell in one accommodation chamber is connected in series with the at least one bare cell in one adjacent accommodation chamber, and the two output components are connected with the at least one bare cell in the first one of the plurality of accommodating chambers and the at least one bare cell in the last one of the plurality of accommodating chambers, respectively.

14. The battery module according to claim 13 , further comprising a barrier film, wherein both the lower shell body and the upper cover are made of plastics, and the barrier film wraps a surface of the lower shell body and a surface of the upper cover.

15. The battery module according to claim 13 , wherein the at least one bare cell in each accommodation chamber comprises two or more bare cells, and the two or more bare cells are stacked and in parallel connection with each other.

Assignees

• Contemporary Amperex Technology Co Ltd

Inventors

• Qin Feng
• Ma Lin
• Zhang Jie
• You Zhiyi
• Wang Juan
• Xiao Xinfu

Classifications

• H01M2/1077

  Electricity · mapped topic

• H01M2/263

  Electricity · mapped topic

• H01M2/20

  Electricity · mapped topic

• H01M2/0217

  Electricity · mapped topic

• H01M2/30

  Electricity · mapped topic