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EP-4343934-B1 - BATTERY, POWER CONSUMING APPARATUS, AND METHOD AND APPARATUS FOR MANUFACTURING BATTERY

EP4343934B1EP 4343934 B1EP4343934 B1EP 4343934B1EP-4343934-B1

Inventors

  • YE, QiQiang

Dates

Publication Date
20260506
Application Date
20211229

Claims (12)

  1. A battery (10), comprising: a battery cell group (2) comprising a plurality of battery cells (20) arranged in a first direction; an enclosure (11) comprising a first beam (101) and a second beam (102) that are arranged at an interval in the first direction, wherein the battery cell group (2) is arranged between the first beam (101) and the second beam (102), at least one of the first beam (101) and the second beam (102) is a locking beam, and a wedge-shaped gap (12) is provided between the locking beam and the battery cell group (2); and a wedge-shaped component (13) configured to fill the wedge-shaped gap (12), so as to lock the battery cell group (2) to the enclosure (11); wherein the wedge-shaped component (13) comprises a first surface (1301) and a second surface (1302) that are oppositely arranged, wherein the first surface (1301) is arranged opposite and parallel to the surface of the battery cell group (2) facing towards the locking beam, and the second surface (1302) is arranged opposite and parallel to the surface of the locking beam facing towards the battery cell group (2); and wherein the battery (10) further comprises: an end plate (23) arranged between the locking beam and the battery cell group (2) and attached to the battery cell group (2), wherein a step (231) is arranged on one side of the end plate (23) facing towards the locking beam; and the wedge-shaped component (13) further comprises: a third surface (1303) connecting the first surface (1301) and the second surface (1302); and a second extending portion (1305) extending from the third surface (1303) in the first direction towards the battery cell group (2), wherein the second extending portion (1305) is configured to cooperate with the step (231) to limit the end plate (23) in a second direction, the second direction is perpendicular to the first direction and perpendicular to an extending direction of the locking beam, and the extending direction of the locking beam is perpendicular to the first direction.
  2. The battery (10) according to claim 1, wherein the wedge-shaped component (13) is fixed to the locking beam.
  3. The battery (10) according to claim 1 or 2, wherein a surface of the locking beam facing towards the battery cell group (2) is obliquely arranged towards one side away from the battery cell group (2) relative to the first direction.
  4. The battery (10) according to claim 3, wherein the locking beam is a trapezoidal beam.
  5. The battery (10) according to any one of claims 1-4, wherein a surface of the battery cell group (2) facing towards the locking beam is obliquely arranged towards one side away from the locking beam relative to the first direction.
  6. The battery (10) according to any one of claims 3-5, wherein an included angle between the surface of the locking beam facing towards the battery cell group (2) and the surface of the battery cell group (2) facing towards the locking beam is greater than 0° and less than 90°.
  7. The battery (10) according to claim 1, wherein the wedge-shaped component (13) further comprises: a third surface (1303) connecting the first surface (1301) and the second surface (1302); and a first extending portion (1304) extending from the third surface (1303) in the first direction away from the battery cell group (2), wherein the first extending portion (1304) is connected to the locking beam.
  8. The battery (10) according to any one of claims 1-7, wherein the battery (10) further comprises: a bus component (24) configured to electrically connect the plurality of battery cells (20), wherein the bus component (24) is arranged at one end of the battery cell group (2) in a third direction, the third direction is parallel to an extending direction of the locking beam, and the extending direction of the locking beam is perpendicular to the first direction.
  9. The battery (10) according to any one of claims 1-8, wherein the first beam (101) and the second beam (102) are side walls of the enclosure (11).
  10. A power consuming apparatus, comprising: the battery (10) according to any one of claims 1-9, wherein the battery (10) is configured to supply electric energy to the power consuming apparatus.
  11. A method for manufacturing a battery (10), comprising: providing a battery cell group (2), wherein the battery cell group (2) comprises a plurality of battery cells (20) arranged in a first direction; providing an enclosure (11), wherein the enclosure (11) comprises a first beam (101) and a second beam (102) that are arranged at an interval in the first direction, wherein the battery cell group (2) is arranged between the first beam (101) and the second beam (102), at least one of the first beam (101) and the second beam (102) is a locking beam, and a wedge-shaped gap (12) is provided between the locking beam and the battery cell group (2); providing a wedge-shaped component (13); and filling the wedge-shaped gap (12) with the wedge-shaped component (13), so as to lock the battery cell group (2) to the enclosure (11); wherein the wedge-shaped component (13) comprises a first surface (1301) and a second surface (1302) that are oppositely arranged, wherein the first surface (1301) is arranged opposite and parallel to the surface of the battery cell group (2) facing towards the locking beam, and the second surface (1302) is arranged opposite and parallel to the surface of the locking beam facing towards the battery cell group (2); and wherein the battery (10) further comprises: an end plate (23) arranged between the locking beam and the battery cell group (2) and attached to the battery cell group (2), wherein a step (231) is arranged on one side of the end plate (23) facing towards the locking beam; and the wedge-shaped component (13) further comprises: a third surface (1303) connecting the first surface (1301) and the second surface (1302); and a second extending portion (1305) extending from the third surface (1303) in the first direction towards the battery cell group (2), wherein the second extending portion (1305) is configured to cooperate with the step (231) to limit the end plate (23) in a second direction, the second direction is perpendicular to the first direction and perpendicular to an extending direction of the locking beam, and the extending direction of the locking beam is perpendicular to the first direction.
  12. An apparatus for manufacturing a battery (10), comprising: a providing module, configured to: provide a battery cell group (2), wherein the battery cell group (2) comprises a plurality of battery cells (20) arranged in a first direction; provide an enclosure (11), wherein the enclosure (11) comprises a first beam (101) and a second beam (102) that are arranged at an interval in the first direction, wherein the battery cell group (2) is arranged between the first beam (101) and the second beam (102), at least one of the first beam (101) and the second beam (102) is a locking beam, and a wedge-shaped gap (12) is provided between the locking beam and the battery cell group (2); and provide a wedge-shaped component (13); and a mounting module configured to: fill the wedge-shaped gap (12) with the wedge-shaped component (13), so as to lock the battery cell group (2) to the enclosure (11); wherein the wedge-shaped component (13) comprises a first surface (1301) and a second surface (1302) that are oppositely arranged, wherein the first surface (1301) is arranged opposite and parallel to the surface of the battery cell group (2) facing towards the locking beam, and the second surface (1302) is arranged opposite and parallel to the surface of the locking beam facing towards the battery cell group (2); and wherein the battery (10) further comprises: an end plate (23) arranged between the locking beam and the battery cell group (2) and attached to the battery cell group (2), wherein a step (231) is arranged on one side of the end plate (23) facing towards the locking beam; and the wedge-shaped component (13) further comprises: a third surface (1303) connecting the first surface (1301) and the second surface (1302); and a second extending portion (1305) extending from the third surface (1303) in the first direction towards the battery cell group (2), wherein the second extending portion (1305) is configured to cooperate with the step (231) to limit the end plate (23) in a second direction, the second direction is perpendicular to the first direction and perpendicular to an extending direction of the locking beam, and the extending direction of the locking beam is perpendicular to the first direction.

Description

Technical Field The present application relates to the technical field of batteries, and in particular to a battery as specified in any of claims 1-9 , a power consuming apparatus as specified in claim 10, a method for manufacturing a battery as specified in claim 11, and an apparatus for manufacturing a battery as specified in claim 12 . Background Art Energy conservation and emission reduction are keys to sustainable development of the automobile industry. In this case, electric vehicles play an important part in the sustainable development of the automobile industry because of their advantages in energy conservation and environmental protection. Further, for the electric vehicles, the battery technology is an important factor to their development. US2011/293973A1 relates to a battery pack. DE102015214185B4 mentions a fixing element of a battery pack. A battery is mounted on a power consuming apparatus, such as a vehicle. Movement of the power consuming apparatus, such as the vehicle, may cause an impact on the battery to some extent. If the battery has weak stiffness and strength, the impact will have a negative effect on performance of the battery and is likely to cause safety problems. In view of this, how to improve the stiffness and strength of the battery is a technical problem urgently to be solved in the battery technology. Summary of the Invention The claimed subject-matter is defined by the appended claims. The present application provides a battery as specified in any of claims 1-9, a power consuming apparatus as specified in claim 10, a method for manufacturing a battery as specified in claim 11, and an apparatus for manufacturing a battery as specified in claim 12, which can improve stiffness and strength of the battery, thereby improving performance of the battery. In a first aspect, there is provided a battery as specified in any of claims 1-9, including: a battery cell group including a plurality of battery cells arranged in a first direction; an enclosure including a first beam and a second beam that are arranged at an interval in the first direction, where the battery cell group is arranged between the first beam and the second beam, at least one of the first beam and the second beam is a locking beam, and a wedge-shaped gap is provided between the locking beam and the battery cell group; and a wedge-shaped component configured to fill the wedge-shaped gap, so as to lock the battery cell group to the enclosure; where the wedge-shaped component includes a first surface and a second surface that are oppositely arranged, where the first surface is arranged opposite and parallel to the surface of the battery cell group facing towards the locking beam, and the second surface is arranged opposite and parallel to the surface of the locking beam facing towards the battery cell group. The battery further includes: an end plate arranged between the locking beam and the battery cell group and attached to the battery cell group, where a step is arranged on one side of the end plate facing towards the locking beam; and the wedge-shaped component further includes: a third surface connecting the first surface and the second surface; and a second extending portion extending from the third surface in the first direction towards the battery cell group, where the second extending portion is configured to cooperate with the step to limit the end plate in a second direction, the second direction is perpendicular to the first direction and perpendicular to an extending direction of the locking beam, and the extending direction of the locking beam is perpendicular to the first direction. According to a technical solution of an embodiment of the present application, the battery cell group can be reliably and stably locked to the enclosure with the cooperation between the wedge-shaped component and the wedge-shaped gap. Moreover, an interaction force exists between the battery cells due to pressing such that adjacent battery cells restrict each other, and structural stability of the battery can be improved, thereby improving overall stiffness and strength of the battery, and reducing a safety risk caused by vibration and impact on the battery during use. In addition, the wedge-shaped gap is provided between the first beam and/or the second beam and the battery cell group such that the battery cell group can be conveniently put into the enclosure, thereby reducing a difficulty in assembling the battery cell group into the enclosure. The wedge-shaped gap allows for a solution that the plurality of battery cells are assembled into a module and then put into the enclosure, and can also support a solution that the battery cells are put into the enclosure first and then fixed therein. After the battery cell group is put into the enclosure, the wedge-shaped gap is filled with the wedge-shaped component, so as to lock the battery cell group, thereby improving assembly efficiency. In some possible implementations, the we