CN212587672U

CN212587672U - Cover plate assembly and battery module

Info

Publication number: CN212587672U
Application number: CN202021024449.9U
Authority: CN
Inventors: 柯颖华; 林鹏; 赖信华; 董锋; 沈剑
Original assignee: Yinlong New Energy Co Ltd
Current assignee: Yinlong New Energy Co Ltd
Priority date: 2020-06-05
Filing date: 2020-06-05
Publication date: 2021-02-23
Anticipated expiration: 2030-06-05

Abstract

The utility model provides an apron subassembly and battery module is provided with down apron and upper cover plate in the apron subassembly, wherein, the apron includes the lower cover body down, the downside of lower cover body be used for with the monomer battery cooperation, the upside of lower cover body has the trough and sets up the cardboard on the lateral wall of trough, the tank bottom interval of cardboard and trough sets up, upper cover plate and lower apron joint, the region between upper cover plate and the lower apron is used for holding the electrical part. By adopting the technical scheme, the wiring harness is arranged in the wiring groove and is fixed through the clamping plate, so that the wiring harness can be prevented from protruding out of the surface of the lower cover plate, and the wiring harness is prevented from moving through the clamping plate, therefore, the wiring harness can be well protected, the wiring harness is prevented from being extruded or rubbed by other structures, and the safety of the battery module is improved. And moreover, the upper cover plate and the lower cover plate are connected in a clamping manner, so that the assembly is convenient, and the production efficiency is improved.

Description

Cover plate assembly and battery module

Technical Field

The utility model relates to a new forms of energy technical field particularly, relates to a apron subassembly and battery module.

Background

The lithium ion power battery module is used as a core component of an electric automobile, and the stability and reliability of the structure of the lithium ion power battery module directly influence the performance and the service life of the whole battery system. The integrated cover plate in the battery module is usually provided with a wire harness, and the wire harness is used for electrically connecting structures such as a battery and a pole piece. The wire harness in the existing integrated cover plate is exposed, and can be extruded or rubbed with other structures, so that the wire harness is easily damaged. And the damage of the wire harness can cause serious potential safety hazard to the battery module.

Disclosure of Invention

The utility model provides an apron subassembly and battery module to improve the security of the battery module among the prior art.

In order to achieve the above object, according to an aspect of the present invention, the present invention provides a cover plate assembly, including: the lower cover plate comprises a lower cover body, the lower side of the lower cover body is used for being matched with a single battery, the upper side of the lower cover body is provided with a wiring groove and a clamping plate arranged on the side wall of the wiring groove, and the clamping plate and the groove bottom of the wiring groove are arranged at intervals; the upper cover plate is connected with the lower cover plate in a clamped mode, and the area between the upper cover plate and the lower cover plate is used for containing an electric device.

Furthermore, the upper cover plate comprises an upper cover body and an upper convex edge arranged around the periphery of the upper cover body, and a plurality of clamping grooves are distributed in the upper convex edge; the periphery of the upside of lower cover body encircles and is provided with lower chimb, lower chimb distributes and is provided with a plurality of joint spare, and is a plurality of joint spare joint is in a plurality of the joint inslot one-to-one.

Further, the upper cover plate is provided with an assembly groove, the assembly groove is located on one side, away from the lower cover plate, of the upper cover plate, and the assembly groove extends along the length direction of the upper cover plate; the upper cover plate is provided with a plurality of upper vent holes, and the upper vent holes are arranged on the bottom wall of the assembling groove at intervals along the length direction of the assembling groove.

Further, the upper cover plate comprises an upper cover body, the upper cover body is provided with a positive pole piece hole and a negative pole piece hole, the positive pole piece hole and the negative pole piece hole are respectively located at two ends of the upper cover body, the positive pole piece hole is used for correspondingly locating a positive pole total pole piece between the lower cover plate and the upper cover plate, and the negative pole piece hole is used for correspondingly locating a negative pole total pole piece between the lower cover plate and the upper cover plate.

Further, the upper cover plate further includes: the first convex rib is positioned on one side, away from the lower cover plate, of the upper cover body, and the first convex rib is arranged along the periphery of the positive plate hole; the second convex rib is positioned on one side of the upper cover body, which is far away from the lower cover plate, and the second convex rib is arranged along the periphery of the negative pole piece hole; the upper positive pole mark is positioned on one side of the upper cover body, which is far away from the lower cover plate, and the upper positive pole mark is arranged corresponding to the positive pole piece hole; go up the negative pole sign, it is located to go up the negative pole sign one side that deviates from of upper cover body apron down, go up the negative pole sign with negative pole piece hole corresponds the setting.

Furthermore, the number of the clamping plates is multiple, the wiring groove is provided with two opposite side walls, the clamping plates are distributed on the two side walls of the wiring groove, and the clamping plate on one side wall of the wiring groove and the clamping plate on the other side wall of the wiring groove are alternately arranged along the extending direction of the wiring groove.

Furthermore, the wiring groove comprises a long groove and a plurality of short grooves, the plurality of short grooves are communicated with the long groove, the long groove extends along the length direction of the lower cover body, and the plurality of short grooves extend along the width direction of the lower cover body; the clamping plates are distributed on the inner wall of the long groove and the inner walls of the short grooves.

Further, the upper side of the lower cover body is provided with a positive plate groove and a negative plate groove, the positive plate groove and the negative plate groove are respectively located at two ends of the lower cover body, the positive plate groove is used for installing a positive total pole piece, and the negative plate groove is used for installing a negative total pole piece; the lower cover plate further comprises a lower anode mark and a lower cathode mark, the lower anode mark corresponds to the anode sheet groove, and the lower cathode mark corresponds to the cathode sheet groove.

Furthermore, the upside of lower cover body has first installing zone and the second installing zone that the interval set up, first installing zone with the second installing zone all follows the length direction of lower cover body extends, the trough is located first installing zone with between the second installing zone, first installing zone with the second installing zone all is used for installing the pole piece.

According to the utility model discloses an on the other hand provides a battery module, battery module includes the apron subassembly that the aforesaid provided.

Use the technical scheme of the utility model, a apron subassembly is provided with down apron and upper cover plate in the apron subassembly, wherein, lower apron includes the lower cover body, the downside of lower cover body be used for with the monomer battery cooperation, the upside of lower cover body has the trough and sets up the cardboard on the lateral wall of trough, the cardboard sets up with the tank bottom interval of trough, upper cover plate and lower apron joint, the region between upper cover plate and the lower apron is used for holding the electrical part. By adopting the technical scheme, the wiring harness is arranged in the wiring groove and is fixed through the clamping plate, so that the wiring harness can be prevented from protruding out of the surface of the lower cover plate, and the wiring harness is prevented from moving through the clamping plate, therefore, the wiring harness can be well protected, the wiring harness is prevented from being extruded or rubbed by other structures, and the safety of the battery module is improved. And moreover, the upper cover plate and the lower cover plate are connected in a clamping manner, so that the assembly is convenient, and the production efficiency is improved.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural diagram of a cover plate assembly provided by an embodiment of the present invention;

FIG. 2 is a schematic view of the upper cover plate of FIG. 1;

FIG. 3 is a schematic view showing the structure of the lower cover plate of FIG. 1;

fig. 4 shows a schematic view of the other side of the lower cover plate in fig. 3.

Wherein the figures include the following reference numerals:

210. a lower cover plate; 211. a lower cover body; 2111. a wiring groove; 2112. a first mounting groove; 2113. a second mounting groove; 2114. a positive plate groove; 2115. a negative plate groove; 212. clamping a plate; 213. a pole hole; 214. a lower vent; 215. marking a lower positive pole; 216. a lower cathode mark; 217. a lower convex edge; 218. a clamping piece; 220. an upper cover plate; 221. an upper cover body; 2211. assembling a groove; 222. an upper flange; 2221. a clamping groove; 223. an upper vent; 224. a positive plate hole; 225. a negative plate hole; 226. a first rib; 227. a second rib; 228. an anode mark is added; 229. and (4) upper negative pole identification.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in the drawings, embodiments of the present invention provide a cover plate assembly, including: the lower cover plate 210 comprises a lower cover body 211, the lower side of the lower cover body 211 is used for being matched with the single battery, the upper side of the lower cover body 211 is provided with a wiring groove 2111 and a clamping plate 212 arranged on the side wall of the wiring groove 2111, and the clamping plate 212 and the groove bottom of the wiring groove 2111 are arranged at intervals; the upper cover plate 220, the upper cover plate 220 is clamped with the lower cover plate 210, and the area between the upper cover plate 220 and the lower cover plate 210 is used for accommodating electric devices.

Use the technical scheme of the utility model, a cover plate assembly is provided, be provided with down apron 210 and upper cover plate 220 in the apron subassembly, wherein, lower apron 210 includes lower cover body 211, lower cover body 211's downside is used for cooperating with the battery cell, lower cover body 211's upside has trough 2111 and sets up the cardboard 212 on trough 2111's lateral wall, cardboard 212 sets up with trough 2111's tank bottom interval, upper cover plate 220 and lower cover plate 210 joint, the region between upper cover plate 220 and the lower cover plate 210 is used for holding the electrical part. By adopting the technical scheme, the wiring harness is arranged in the wiring groove 2111 and is fixed through the clamping plate 212, so that the wiring harness can be prevented from protruding out of the surface of the lower cover plate 210, and the wiring harness is prevented from moving through the clamping plate 212, therefore, the wiring harness can be well protected, the wiring harness is prevented from being extruded or rubbed by other structures, and the safety of the battery module is improved. Moreover, the upper cover plate 220 is connected with the lower cover plate 210 in a clamping manner, so that assembly is facilitated, and production efficiency is improved.

In this embodiment, the upper cover plate 220 includes an upper cover body 221 and an upper flange 222 disposed around the periphery of the upper cover body 221, and a plurality of clamping grooves 2221 are distributed on the upper flange 222; the periphery of the upside of lower cover body 211 is provided with lower chimb 217 around encircling, and the outside of lower chimb 217 distributes and is provided with a plurality of joint spare 218, and a plurality of joint spare 218 one-to-one ground joint is in a plurality of joint grooves 2221. This may increase the strength of the upper cover plate 220 by the upper flange 222 and the strength of the lower cover plate 210 by the lower flange 217. Moreover, the connection of the upper cover plate 220 and the lower cover plate 210 can be quickly and reliably achieved by the cooperation of the plurality of clip grooves 2221 and the plurality of clip members 218.

Further, in this embodiment, the inboard distribution of lower flange 217 is provided with a plurality of buckles, and the buckle is used for cooperating with the pole piece to carry on spacingly to the pole piece, improve stability and reliability.

In this embodiment, the upper cover 220 has a fitting groove 2211, the fitting groove 2211 is located on a side of the upper cover 220 facing away from the lower cover 210, and the fitting groove 2211 extends along a length direction of the upper cover 220; the upper cover 220 has a plurality of upper vent holes 223, and the plurality of upper vent holes 223 are provided in the bottom wall of the fitting groove 2211 at intervals in the longitudinal direction of the fitting groove 2211. The fitting groove 2211 is used to install beads pressed against the upper cover plate 220 to improve structural strength. The upper vent 223 is used to correspond to an explosion-proof valve installed in the battery module, so that exhaust can be performed when danger occurs, and the safety of the battery module is improved.

In this embodiment, the upper cover plate 220 includes an upper cover body 221, the upper cover body 221 has a positive plate hole 224 and a negative plate hole 225, and the positive plate hole 224 and the negative plate hole 225 are respectively located at two ends of the upper cover body 221, wherein the positive plate hole 224 is used for corresponding to a positive general pole piece located between the lower cover plate 210 and the upper cover plate 220 to mount the power line, and the negative plate hole 225 is used for corresponding to a negative general pole piece located between the lower cover plate 210 and the upper cover plate 220 to mount the power line. Through the arrangement, the installation of the positive total pole piece and the negative total pole piece is facilitated.

In this embodiment, the upper cover plate 220 further includes: the first rib 226 is located on one side of the upper cover body 221, which faces away from the lower cover plate 210, and the first rib 226 is arranged along the periphery of the positive plate hole 224; the second rib 227 is located on one side of the upper cover body 221, which is away from the lower cover plate 210, and the second rib 227 is arranged along the periphery of the negative pole piece hole 225; an upper positive pole mark 228, wherein the upper positive pole mark 228 is located on one side of the upper cover body 221 away from the lower cover plate 210, and the upper positive pole mark 228 is arranged corresponding to the positive pole piece hole 224; go up negative pole sign 229, go up negative pole sign 229 and be located the one side that deviates from lower cover plate 210 of upper cover body 221, go up negative pole sign 229 and negative pole piece hole 225 and correspond the setting. The structural strength of the upper cover plate 220 may be improved by the first and

second ribs

226 and 227. The upper positive pole mark 228 and the upper negative pole mark 229 can play a role in prompting during assembly, and misassembly is avoided.

Optionally, the inner side of the first rib 226 is provided with a buckle, and the inner side of the second rib 227 is provided with a buckle, so that the connection with the shield is facilitated to play a protection role, and the connection is convenient and reliable.

In this embodiment, there are a plurality of the card boards 212, the wiring groove 2111 has two opposite side walls, the plurality of card boards 212 are distributed on the two side walls of the wiring groove 2111, and the card boards 212 on one side wall of the wiring groove 2111 and the card boards 212 on the other side wall of the wiring groove 2111 are alternately arranged along the extending direction of the wiring groove 2111. The limiting effect on the wire harness can be improved by the plurality of clamping plates 212 which are arranged alternately.

In this embodiment, the wiring slot 2111 includes a long slot and a plurality of short slots, the plurality of short slots are all communicated with the long slot, the long slot extends along the length direction of the lower cover body 211, and the plurality of short slots all extend along the width direction of the lower cover body 211; the clamping plates 212 are multiple, and the multiple clamping plates 212 are distributed on the inner wall of the long groove and the inner walls of the multiple short grooves. Through long slot and a plurality of short grooves, the arrangement of pencil of can being convenient for to realize the connection of different electrical apparatus structures, a plurality of cardboard 212 distribute on the inner wall of long slot and on the inner wall of a plurality of short grooves, can all carry out spacing to the pencil in long slot and the short groove, prevent that the pencil from deviating from.

In this embodiment, the upper side of the lower cover body 211 has a positive plate slot 2114 and a negative plate slot 2115, the positive plate slot 2114 and the negative plate slot 2115 are respectively located at two ends of the lower cover body 211, wherein the positive plate slot 2114 is used for installing a positive total pole piece, and the negative plate slot 2115 is used for installing a negative total pole piece; the lower cover plate 210 further includes a lower positive mark 215 and a lower negative mark 216, the lower positive mark 215 is disposed corresponding to the positive plate slot 2114, and the lower negative mark 216 is disposed corresponding to the negative plate slot 2115. Through the arrangement, the positive total pole piece and the negative total pole piece are convenient to mount. Moreover, the lower positive pole mark 215 and the lower negative pole mark 216 can play a role in prompting during assembly, and misassembly is avoided. The positive electrode tab hole 224 corresponds to the positive electrode tab slot 2114, and the negative electrode tab hole 225 corresponds to the negative electrode tab slot 2115.

In this embodiment, the upper side of lower cover body 211 has first installing zone and the second installing zone of interval setting, and first installing zone and second installing zone all extend along the length direction of lower cover body 211, and trough 2111 is located between first installing zone and the second installing zone, and first installing zone and second installing zone all are used for installing the pole piece. The arrangement of the pole pieces is facilitated by the first mounting area and the second mounting area, and the wiring groove 2111 is located between the first mounting area and the second mounting area, so that a voltage collecting line and a temperature collecting line arranged in the wiring groove 2111 are connected with the pole pieces.

In this embodiment, the first installation area has a plurality of first installation grooves 2112 therein, each first installation groove 2112 is communicated with the wiring groove 2111, and each first installation groove 2112 is internally provided with one sub-pole piece or one main pole piece; have a plurality of second mounting grooves 2113 in the second installing zone, every second mounting groove 2113 all communicates with trough 2111, all is used for installing a branch pole piece in every second mounting groove 2113. The installation of the divided pole pieces or the total pole piece can be facilitated by providing the plurality of first installation grooves 2112 and the plurality of second installation grooves 2113.

Optionally, the shape of the inner wall of the first mounting groove 2112 matches the periphery of the pole piece located inside the first mounting groove 2112, and the shape of the inner wall of the second mounting groove 2113 matches the periphery of the pole piece located inside the second mounting groove 2113, so that a good limiting effect can be achieved on the pole piece. Optionally, the inner wall of the first mounting groove 2112 is provided with a buckle, and the inner wall of the second mounting groove 2113 is provided with a buckle, so that the first mounting groove is conveniently clamped with other structural members, and the connection strength is improved.

In the present embodiment, the positive electrode tab slot 2114 and the negative electrode tab slot 2115 are provided on the upper side of the lower cover body 211, that is, asymmetrically provided, which prevents an error in assembly. The positive plate slot 2114 and the negative plate slot 2115 are respectively located at two ends of the first mounting region, that is, the two first mounting slots 2112 at two ends of the first mounting region are the positive plate slot 2114 and the negative plate slot 2115 respectively.

Optionally, the inner walls of the positive plate slot 2114 and the negative plate slot 2115 are provided with buckles, so that the pole pieces mounted in the positive plate slot 2114 and the negative plate slot 2115 can be clamped, and stability and reliability are improved.

In this embodiment, the lower cover body 211 has a plurality of pole column holes 213, the plurality of pole column holes 213 are distributed in the first mounting area and the second mounting area, the pole column holes 213 in the first mounting area and the pole column holes 213 in the second mounting area are arranged in a one-to-one correspondence, and the pole column holes 213 are used for avoiding the poles of the single batteries; the lower cover body 211 has a plurality of lower vent holes 214, the plurality of lower vent holes 214 are provided at intervals along the length direction of the lower cover body 211, and the plurality of lower vent holes 214 are located between the first mounting region and the second mounting region. Through setting up utmost point post hole 213, the utmost point post and the pole piece of the monomer battery of being convenient for are connected to transmit electricity. The lower vent hole 214 is used to correspond to an explosion-proof valve to exhaust gas in case of danger, thereby improving safety. In the present embodiment, the plurality of upper vent holes 223 are disposed in one-to-one correspondence with the plurality of lower vent holes 214 of the lower cover plate 210.

Optionally, the lower vent hole 214 has a cross-shaped frame therein, and the cross-shaped frame is connected to an inner wall of the lower vent hole 214 to increase structural strength.

Another embodiment of the utility model provides a battery module, battery module include foretell apron subassembly. The lower cover plate 210 and the upper cover plate 220 are arranged in the cover plate assembly, wherein the lower cover plate 210 comprises a lower cover body 211, the lower side of the lower cover body 211 is used for being matched with a single battery, the upper side of the lower cover body 211 is provided with a wiring groove 2111 and a clamping plate 212 arranged on the side wall of the wiring groove 2111, the clamping plate 212 and the groove bottom of the wiring groove 2111 are arranged at intervals, the upper cover plate 220 is clamped with the lower cover plate 210, and an area between the upper cover plate 220 and the lower cover plate 210 is used for accommodating an electric device. By adopting the technical scheme, the wiring harness is arranged in the wiring groove 2111 and is fixed through the clamping plate 212, so that the wiring harness can be prevented from protruding out of the surface of the lower cover plate 210, and the wiring harness is prevented from moving through the clamping plate 212, therefore, the wiring harness can be well protected, the wiring harness is prevented from being extruded or rubbed by other structures, and the safety of the battery module is improved.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A cover plate assembly, comprising:

the lower cover plate (210) comprises a lower cover body (211), the lower side of the lower cover body (211) is used for being matched with a single battery, the upper side of the lower cover body (211) is provided with a wiring groove (2111) and a clamping plate (212) arranged on the side wall of the wiring groove (2111), and the clamping plate (212) and the groove bottom of the wiring groove (2111) are arranged at intervals;

the upper cover plate (220), upper cover plate (220) with lower apron (210) joint, upper cover plate (220) with the region between lower apron (210) is used for holding the electrical part.

2. The cover plate assembly of claim 1,

the upper cover plate (220) comprises an upper cover body (221) and an upper convex edge (222) arranged on the periphery of the upper cover body (221) in a surrounding mode, and a plurality of clamping grooves (2221) are distributed in the upper convex edge (222);

the periphery of the upside of lower cover body (211) encircles and is provided with lower chimb (217), it is provided with a plurality of joint spare (218) to distribute on lower chimb (217), and is a plurality of joint spare (218) one-to-one ground joint is in a plurality of in joint groove (2221).

3. The cover plate assembly of claim 2,

the upper cover plate (220) is provided with a mounting groove (2211), the mounting groove (2211) is positioned on one side of the upper cover plate (220) facing away from the lower cover plate (210), and the mounting groove (2211) extends along the length direction of the upper cover plate (220);

the upper cover (220) has a plurality of upper vent holes (223), and the plurality of upper vent holes (223) are provided at intervals in the longitudinal direction of the mounting groove (2211) on the bottom wall of the mounting groove (2211).

4. The cap plate assembly of claim 1, wherein the upper cap plate (220) comprises an upper cap body (221), the upper cap body (221) has a positive pole piece hole (224) and a negative pole piece hole (225), the positive pole piece hole (224) and the negative pole piece hole (225) are respectively located at two ends of the upper cap body (221), wherein the positive pole piece hole (224) is used for corresponding to a positive pole overall pole piece located between the lower cap plate (210) and the upper cap plate (220), and the negative pole piece hole (225) is used for corresponding to a negative pole overall pole piece located between the lower cap plate (210) and the upper cap plate (220).

5. The cover plate assembly of claim 4, wherein the upper cover plate (220) further comprises:

the first convex rib (226) is positioned on one side, away from the lower cover plate (210), of the upper cover body (221), and the first convex rib (226) is arranged along the periphery of the positive plate hole (224);

the second convex rib (227) is positioned on one side, away from the lower cover plate (210), of the upper cover body (221), and the second convex rib (227) is arranged along the periphery of the negative pole piece hole (225);

the upper positive pole mark (228) is positioned on one side, away from the lower cover plate (210), of the upper cover body (221), and the upper positive pole mark (228) is arranged corresponding to the positive pole piece hole (224);

the upper negative pole mark (229) is positioned on one side, away from the lower cover plate (210), of the upper cover body (221), and the upper negative pole mark (229) and the negative pole piece hole (225) are correspondingly arranged.

6. The cover plate assembly according to claim 1, wherein the plurality of the clamping plates (212) are provided, the wiring groove (2111) has two opposite side walls, the plurality of the clamping plates (212) are distributed on the two side walls of the wiring groove (2111), and the clamping plates (212) on one side wall of the wiring groove (2111) and the clamping plates (212) on the other side wall of the wiring groove (2111) are alternately arranged along the extending direction of the wiring groove (2111).

7. The cover plate assembly of claim 1,

the wiring groove (2111) comprises a long groove and a plurality of short grooves, the short grooves are communicated with the long groove, the long groove extends along the length direction of the lower cover body (211), and the short grooves extend along the width direction of the lower cover body (211);

the clamping plates (212) are distributed on the inner wall of the long groove and the inner walls of the short grooves.

8. The cover plate assembly of claim 1,

the upper side of the lower cover body (211) is provided with a positive plate groove (2114) and a negative plate groove (2115), the positive plate groove (2114) and the negative plate groove (2115) are respectively positioned at two ends of the lower cover body (211), wherein the positive plate groove (2114) is used for installing a positive total pole piece, and the negative plate groove (2115) is used for installing a negative total pole piece;

the lower cover plate (210) further comprises a lower positive pole mark (215) and a lower negative pole mark (216), the lower positive pole mark (215) is arranged corresponding to the positive pole piece groove (2114), and the lower negative pole mark (216) is arranged corresponding to the negative pole piece groove (2115).

9. The cover plate assembly of claim 1, wherein the upper side of the lower cover body (211) has a first mounting area and a second mounting area arranged at intervals, the first mounting area and the second mounting area both extend along the length direction of the lower cover body (211), the wiring groove (2111) is located between the first mounting area and the second mounting area, and the first mounting area and the second mounting area are both used for mounting a pole piece.

10. A battery module comprising the cap plate assembly according to any one of claims 1 to 9.