US-20260128359-A1 - BATTERY PRESSURIZATION DEVICE AND BATTERY PRODUCTION SYSTEM

US20260128359A1US 20260128359 A1US20260128359 A1US 20260128359A1US-20260128359-A1

Abstract

A battery pressurization device and a battery production system are disclosed. The battery pressurization device includes a bearing mechanism, a first pressurization plate, and a second pressurization plate. The first pressurization plate and the second pressurization plate are disposed on the bearing mechanism and are opposite to each other in a first direction. The first pressurization plate and the second pressurization plate can move towards each other in the first direction to apply pressure to a battery cell disposed between the first pressurization plate and the second pressurization plate from both sides.

Inventors

Zehong HE
Minghao Tang
Fenggang Zhao
Zhuangcheng YI
Qiming Shi
Peng Jing
Junliang MA
Bin Zhong
Erchi GUO
Caixia HUANG

Assignees

CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Dates

Publication Date: 20260507
Application Date: 20260105
Priority Date: 20230713

Claims (15)

1 . A battery pressurization device, comprising: a bearing mechanism; and a first pressurization plate and a second pressurization plate, disposed on the bearing mechanism and opposite to each other in a first direction, wherein the first pressurization plate and the second pressurization plate are able to move towards each other in the first direction to apply pressure to a battery cell disposed between the first pressurization plate and the second pressurization plate from both sides.
2 . The battery pressurization device according to claim 1 , further comprising a first limiting member, wherein the first limiting member is disposed on the bearing mechanism; and the first limiting member is configured to limit movement of the first pressurization plate in a direction away from the second pressurization plate when the pressure applied to the battery cell by the first pressurization plate reaches a first threshold.
3 . The battery pressurization device according to claim 2 , wherein the bearing mechanism comprises a first end plate, and the first end plate is located on a side of the first pressurization plate facing away from the second pressurization plate; the first limiting member is disposed on the first end plate; and the first limiting member is configured to abut against a surface of the first pressurization plate facing away from the second pressurization plate when the pressure applied to the battery cell by the first pressurization plate reaches the first threshold.
4 . The battery pressurization device according to claim 3 , wherein the first limiting member is connected to the first end plate in a threaded mode.
5 . The battery pressurization device according to claim 3 , wherein the first limiting member comprises a threaded rod and a limiting flange connected to the threaded rod, the limiting flange is located on a side of the first end plate facing away from the first pressurization plate, and the threaded rod passes through the first end plate and is connected to the first end plate in a threaded mode.
6 . The battery pressurization device according to claim 3 , wherein the first end plate is provided with a first avoidance structure, and the first avoidance structure is able to avoid an external driving component configured to drive the first pressurization plate to move in the first direction.
7 . The battery pressurization device according to claim 6 , wherein the first avoidance structure comprises a through hole, and the through hole is configured to allow the driving component to pass through.
8 . The battery pressurization device according to claim 2 , wherein a plurality of first limiting members are disposed.
9 . The battery pressurization device according to claim 2 , further comprising a second limiting member, wherein the second limiting member is disposed on the bearing mechanism; and the second limiting member is configured to limit movement of the second pressurization plate in a direction away from the first pressurization plate when the pressure applied to the battery cell by the second pressurization plate reaches a second threshold.
10 . The battery pressurization device according to claim 1 , further comprising a plurality of partition plates arranged in the first direction; wherein the plurality of partition plates are disposed between the first pressurization plate and the second pressurization plate; and each partition plate is movably disposed on the bearing mechanism in the first direction.
11 . The battery pressurization device according to claim 1 , wherein the bearing mechanism comprises: a bearing plate, configured to bear the battery cell; a first end plate and a second end plate, connected to two ends of the bearing plate in the first direction, wherein the first end plate is located on the side of the first pressurization plate facing away from the second pressurization plate, and the second end plate is located on a side of the second pressurization plate facing away from the first pressurization plate; and a guiding assembly, disposed on a side of the bearing plate facing the battery cell and connected to the first end plate and the second end plate, wherein the first pressurization plate and the second pressurization plate are movably connected to the guiding assembly in the first direction.
12 . The battery pressurization device according to claim 11 , wherein the first end plate is provided with a first avoidance structure, and the first avoidance structure is able to avoid an external driving component configured to drive the first pressurization plate to move in the first direction; and the second end plate is provided with a second avoidance structure, and the second avoidance structure is able to avoid an external driving component configured to drive the second pressurization plate to move in the first direction.
13 . The battery pressurization device according to claim 12 , wherein the first avoidance structure comprises a through hole; and/or the second avoidance structure comprises a through hole.
14 . A battery production system, comprising: the battery pressurization device according to claim 1 ; and a driving component, configured to drive the first pressurization plate and the second pressurization plate to move toward each other in the first direction.
15 . A battery production system, comprising: the battery pressurization device according to claim 2 ; and a driving component, comprising a first driving member and a second driving member, wherein the first driving member is configured to drive the first pressurization plate and the second pressurization plate to move toward each other in the first direction, and the second driving member is configured to drive the first limiting member, so that the first limiting member is pressed against the first pressurization plate or pressure of the first limiting member on the first pressurization plate is released.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS The present application is a continuation of International application PCT/CN2023/140654 filed on Dec. 21, 2023 that claims priority to Chinese patent application No. 202310859758.X, filed on Jul. 13, 2023. The content of these applications is incorporated herein by reference in its entirety. TECHNICAL FIELD The present application relates to the field of batteries, and in particular, to a battery pressurization device and a battery production system. BACKGROUND With the development of new-energy technologies, batteries are increasingly widely applied, such as applied in a mobile phone, a laptop, a storage battery car, an electric vehicle, an electric airplane, an electric ship, an electric toy car, an electric toy ship, an electric toy plane, an electric tool, and the like. In some production processes of battery cells, it is necessary to pressurize the battery cells. Therefore, there is an urgent need to provide a device that can pressurize the battery cells. SUMMARY OF THE INVENTION The present application provides a battery pressurization device and a battery production system, and the battery pressurization device can apply pressure to battery cells from both sides. In a first aspect, embodiments of the present application provide a battery pressurization device, which includes a bearing mechanism, a first pressurization plate, and a second pressurization plate. The first pressurization plate and the second pressurization plate are disposed on the bearing mechanism and are opposite to each other in a first direction. The first pressurization plate and the second pressurization plate can move towards each other in the first direction to apply pressure to the battery cell disposed between the first pressurization plate and the second pressurization plate from both sides. When it is necessary to pressurize the battery cells, the plurality of battery cells can be arranged between the first pressurization plate and the second pressurization plate. An external driving component can drive the first pressurization plate and the second pressurization plate to move towards each other in the first direction to reduce a distance between the first pressurization plate and the second pressurization plate, thereby allowing the first pressurization plate and the second pressurization plate to apply pressure to the battery cell from both sides, limiting the deformation of the battery cell, and improving the yield of the battery cell. By changing the displacement of the first pressurization plate and the second pressurization plate, the pressure applied to the battery cell by the first pressurization plate and the second pressurization plate can be effectively controlled, thereby achieving pressure controllability and reducing the risk of electrolyte overflow caused by excessive pressure. In some embodiments, the battery pressurization device further includes a first limiting member, and the first limiting member is disposed on the bearing mechanism. The first limiting member is configured to limit movement of the first pressurization plate in a direction away from the second pressurization plate when the pressure applied to the battery cell by the first pressurization plate reaches a first threshold. When the pressure applied to the battery cell by the first pressurization plate reaches the first threshold, the first limiting member can limit the first pressurization plate. At this time, even if the pressure applied to the first pressurization plate by the external driving component is removed, the first limiting member can still maintain the position of the first pressurization plate, which reduces the movement of the first pressurization plate under the reaction force of the battery cell, thereby keeping the battery cell in a pressurized state. By disposing the first limiting member, when the pressure applied to the battery cell by the first pressurization plate reaches the first threshold, the correlation between the external driving component and the first pressurization plate can be released, which facilitates the battery pressurization device to circulate along with a production line, thereby improving efficiency. In some embodiments, the bearing mechanism includes a first end plate, and the first end plate is located on a side of the first pressurization plate facing away from the second pressurization plate. The first limiting member is disposed on the first end plate; and the first limiting member is configured to abut against a surface of the first pressurization plate facing away from the second pressurization plate when the pressure applied to the battery cell by the first pressurization plate reaches the first threshold. The first end plate can be configured to bear the first limiting member. The first limiting member can abut against the first pressurization plate in the first direction to limit the first pressurization plate in the first direction. The press-agains