Battery module

Patent metadata

Field	Value
Publication number	US-10559798-B2
Application number	US-201816118460-A
Country	US
Kind code	B2
Filing date	Aug 31, 2018
Priority date	Mar 16, 2018
Publication date	Feb 11, 2020
Grant date	Feb 11, 2020

Abstract

The disclosure relates to a battery module comprises a housing, a battery stack, a cover plate assembly, and a guiding component. The battery stack is disposed in a containing chamber of the housing. The cover plate assembly comprises a plate, a deformable plate and a module output, the plate is arranged to close the opening, the deformable plate is connected to the plate and is deformable in a thickness direction of the plate, the module output is connected to the plate and is disposed opposite to the deformable plate, the module output and the battery stack are electrically connected. The guiding component is disposed between the cover plate assembly and the battery stack, and comprises a guiding channel and an exhaust port, and the gas released after the first vent plate is opening flows to the deformable plate through the exhaust port and the guiding channel.

First claim

What is claimed is:

1. A battery module, comprising:
a housing, comprising a containing chamber with an opening;
a battery stack, disposed in the containing chamber and comprising two or more single batteries with a first vent plate and electrically connected to each other;
a cover plate assembly connected to the housing, wherein the cover plate assembly comprises a plate, a deformable plate and a module output, the plate is arranged to close the opening, the deformable plate is connected to the plate and is deformable in a thickness direction of the plate, the module output is connected to the plate and is disposed opposite to the deformable plate, the module output and the battery stack are electrically connected;
a guiding component disposed between the cover plate assembly and the battery stack, wherein the guiding component comprises a guiding channel and an exhaust port, the guiding channel is disposed opposite to the deformable plate and the exhaust port is disposed opposite to the first vent plate, the guiding channel and the exhaust port are connected with each other, and the gas released after the first vent plate is opened flows to the deformable plate through the exhaust port and the guiding channel.

2. The battery module according to claim 1 , wherein the guiding component comprises a substrate disposed in the thickness direction in a spaced manner with the plate, and the exhaust port penetrates through the substrate in the thickness direction, a first surface of the substrate facing the plate has convex ribs that protrude toward the plate, and the convex ribs are arranged around the exhaust port to form the guiding channel.

3. The battery module according to claim 2 , wherein the first surface is provided with at least one guide portion adapted to any shape of the exhaust port, the guide portion comprises an inlet and an outlet connected with each other, and in the thickness direction, the height of the outlet is not higher than the height of the end surface of the convex rib away from the first surface.

4. The battery module according to claim 2 , wherein the second surface of the substrate facing the battery stack is provided with a mating surface which is capable of being attached to the outer periphery of the first vent plate, the mating surface is disposed around the exhaust port.

5. The battery module according to claim 1 , wherein the cover plate assembly further comprises an electrode terminal and a transitional connecting portion, the module output and the battery stack are connected through the electrode terminal, the transitional connecting portion is connected to the electrode terminal, and the deformable plate is electrically connected to the battery stack through the transitional connecting portion when the deformable plate is deformable.

6. The battery module according to claim 5 , wherein the transitional connecting portion comprises a conductive plate disposed on the plate and a resistor component electrically connected to the conductive plate, the conductive plate is disposed to face the deformable plate.

7. The battery module according to claim 5 , wherein the cover plate assembly further comprises a fuse disposed between the plate and the battery stack, the fuse comprising a first connecting portion connected to the electrode terminal, a second connecting portion connected to the battery stack, and a fuse portion between the first connecting portion and the second connecting portion, wherein the fuse portion and the battery stack has a gap therebetween.

8. The battery module according to claim 1 , wherein the plate is provided with a recess recessed towards the battery stack in the thickness direction, and the deformable plate is disposed in the recess.

9. The battery module according to claim 1 , wherein the plate is provided with a vent hole in the thickness direction, and a second vent plate is arranged in the vent hole.

10. The battery module according to claim 9 , wherein the cover plate assembly further comprises a protecting component connected to the plate and provided corresponding to the second vent plate, wherein the protecting component is located between the plate and the battery stack, and the protecting component comprises a blocking portion disposed in a spaced manner with the plate in the thickness direction, the connecting portion connecting the plate and the blocking portion, and an air flow passage enabling air flow to pass through the protection component, wherein the orthogonal projection of the blocking portion on the plate at least partially covers the second vent plate.

Assignees

• Contemporary Amperex Technology Co Ltd

Inventors

• Qin Feng
• Wang Zhi
• Ma Lin
• Zhang Hua
• You Zhiyi
• He Runyong

Classifications

• H01M2200/20

  Pressure-sensitive devices · CPC title

• H01M2/1264 Primary

  Electricity · mapped topic

• H01M2/206

  Electricity · mapped topic

• H01M2/12

  Electricity · mapped topic

• H01M2/1077

  Electricity · mapped topic