CN218498291U - Battery with a battery cell - Google Patents

Abstract

The present application provides a battery. The battery includes: the battery module and the connector module are electrically connected with the battery module; the battery further comprises a shell, the shell comprises a main body part and an outer convex part protruding out of the main body part, the shell accommodates the battery module, the outer convex part surrounds the circumference of the connector module, and the main body part and the outer convex part are of an integrated structure. The main body part and the outer convex part are of an integrated structure, so that the integration level of the battery is improved, and the assembly complexity is reduced.

Description

Battery with a battery cell

Technical Field

This specification relates to battery technology field, concretely relates to battery.

Background

With the tension of global energy supply and the change of global climate and the pollution of environment, more and more countries recognize the importance of new energy. The chemical energy storage system has the advantages of low cost, mature technology, high charge-discharge multiple, good modularity, capability of being used as a distributed energy storage device and the like, and is increasingly applied to vehicles. The chemical energy storage system in the vehicle comprises a battery shell, an electric core assembly, an electronic device inside the battery, an electronic device connected with the outside of the battery and the like, and the assembly is complicated due to numerous parts.

SUMMERY OF THE UTILITY MODEL

In view of the above, embodiments of the present disclosure are directed to providing a battery, which is advantageous for reducing the complexity of assembling the battery.

Embodiments of the present description provide a battery, including: a battery module and a connector module electrically connected to the battery module; the battery further comprises a shell, the shell comprises a main body portion and an outer protruding portion protruding out of the main body portion, the shell accommodates the battery module, the outer protruding portion surrounds the circumferential direction of the connector module, and the main body portion and the outer protruding portion are of an integrated structure.

The battery that this specification embodiment provided, because the casing includes the main part and the outer convex part of evagination in the main part, the battery module is held to the casing, and outer convex part encircles the circumference of connector module to the casing can be when holding battery module and provide the protection to the connector module, and main part and outer convex part structure as an organic whole are favorable to improving the integrated level of battery, reduce the assembly complexity.

Drawings

Fig. 1 is a schematic perspective view of a battery according to an embodiment of the present disclosure.

Fig. 2 is a schematic top view of a battery according to an embodiment of the present disclosure.

Fig. 3 is a schematic front view of a battery according to an embodiment of the present disclosure.

Fig. 4 is a schematic cross-sectional view of a battery according to an embodiment of the present disclosure.

Fig. 5 is a schematic structural view of a battery module according to an embodiment of the present disclosure.

Fig. 6 is a schematic front view of a battery according to an embodiment of the present disclosure.

Fig. 7 is an exploded view of a part of a battery according to an embodiment of the present disclosure.

Detailed Description

In the related art, the battery module in the battery is electrically connected to the outside of the battery through the connector module, thereby completing the charging and discharging of the battery. The protective shell for protecting the connector module and the shell for the battery are of a split structure, and the two types of shells need to be assembled when the battery is produced, for example, nuts are embedded in the shell of the battery, screws are assembled in the protective shell of the connector module, and the protective shell and the shell are assembled through the cooperation of the screws and the nuts. However, split type structure needs more assembly structure, has increased the complexity of battery structure for battery structure integrated nature is poor, also can increase battery assembly's complexity simultaneously, and the cooperation of a plurality of screws and a plurality of nuts also can cause the poor problem of assembly uniformity moreover, is unfavorable for the promotion of casing leakproofness and battery leakproofness.

Please refer to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5 in combination. Fig. 4 is a schematic cross-sectional structure corresponding to the cross-section along AA in fig. 2. The embodiment of the specification provides a battery. The battery may include: a battery module 100 and a connector module 200 electrically connected to the battery module 100; the battery further comprises a housing 300, the housing 300 comprises a main body part 311 and an outer convex part 312 protruding out of the main body part 311, the housing 300 is used for accommodating the battery module 100, the outer convex part 312 surrounds the circumference of the connector module 200, and the main body part 311 and the outer convex part 312 are of an integral structure.

Please refer to fig. 5. In some embodiments, the battery module 100 may have one battery cell 110; alternatively, the battery module 100 may include a plurality of battery cells 110. The plurality of battery cells 110 of the battery module 100 may be electrically connected in series and/or in parallel.

In some embodiments, the battery module 100 may be one, and in a case that the battery module 100 includes a plurality of battery cells 110, the battery cells 110 may be electrically connected in series and/or in parallel. The battery module 100 may be provided in plurality, a plurality of the battery modules 100 may be spatially separated in the case 300 of the battery, and the plurality of the battery modules 100 may be electrically connected in series and/or in parallel.

Please refer to fig. 3 and 4. In some embodiments, the connector module 200 may include electrical connectors 220. The electrical connector 220 is used for electrically connecting with the battery module 100. The electrical connector 220 may have a first connection portion for electrically connecting with the battery module 100 and a second connection portion for connecting with a receiving end structurally independent from the battery, so as to realize charging and discharging of the battery. It is understood that the electrical connection between the electrical connector 220 and the battery module 100 can be achieved by an indirect connection. For example, the electrical connection between the electrical connector 220 and the battery module 100 is achieved through the circuit board 500.

In some embodiments, the connector module 200 may include a carrier 210 and an electrical connector 220. The carrier 210 may be used to fix the electrical connector 220 in the battery. The carrier 210 may have an insulating property. The supporting portion 210 is detachably connected to the electrical connector 220. Is convenient for assembly and replacement.

Please refer to fig. 1, fig. 2, fig. 3 and fig. 4. In some embodiments, the housing 300 includes a main body portion 311 and an external protrusion 312 protruding from the main body portion 311, the housing 300 accommodates the battery module 100, and the external protrusion 312 surrounds the circumference of the connector module 200. It is understood that the housing 300 defines a cavity within which the battery module 100 is located such that the housing 300 can provide restraint and protection for the battery module 100. The body part 311 may receive the battery module 100. The outward protrusion 312 protrudes outward relative to the main body 311, and with reference to the cavity, protruding may refer to protruding outward relative to the cavity, and protruding causes the cavity space to increase. The connector module 200 may have an axial direction, which may be defined based on a direction between the first and second connection portions of the electrical connector 220. The circumferential direction of the connector block 200 is the circumferential direction with respect to the axial direction. The male portion 312 surrounds the circumference of the connector module 200, it being understood that the connector module 200 is at least partially received within the housing 300, and that along the axial direction of the connector module 200, the male portion 312 surrounds the connector module 200 over at least a partial range of the axial dimension of the connector module 200.

In some embodiments, there is an overlap of the outrigger 312 with the connector module 200 in an orthographic projection of the connector module 200 along the axial direction.

In some embodiments, the body portion 311 and the outer protrusion 312 are a unitary structure. The body portion 311 and the male portion 312 may be injection molded. The body portion 311 and the convex portion 312 may be integrally molded.

Please refer to fig. 6. In some embodiments, each surface side of the battery module 100 may be surrounded by the case 300. The housing 300 may be a split structure. To facilitate assembly of the battery. For example, the case 300 may include a first case 310 and a second case 320 detachably coupled, the first case 310 including a body portion 311 and an external protrusion 312, and the battery module 100 placed in the second case 320. The first housing 310 may be disposed opposite to the second housing 320. It is understood that although the housing 300 includes the first housing 310 and the second housing 320 detachably connected, the complexity of the battery may be reduced while realizing the protection of the connector assembly as long as the protruding portion 312 surrounding the circumference of the connector module 200 is integrally structured with the body portion 311. Alternatively, it is understood that the housing 300 may be a split structure, the housing 300 may be at least partially structurally convex to form the convex portion 312, and the convex portion 312 may surround the circumference of the connector module 200, and the convex portion and the surrounding housing 300 may be a unitary structure.

In the battery provided in the embodiments of the present disclosure, since the main body portion 311 and the outer protrusion 312 of the housing 300 are an integral structure, and the housing 300 accommodates the battery module 100, the outer protrusion 312 surrounds the circumference of the connector module 200, so that the housing 300 of the battery can provide protection for the connector module 200, or the housing of the connector module and the housing of the battery module in the embodiments of the present disclosure are an integral structure compared to the related art in which the housing of the connector module and the housing of the battery module require additional assembly. The main body 311 and the outer protrusion 312 are integrally formed, so that the number of parts can be reduced, and the battery integration level can be improved and the assembly difficulty can be reduced. Furthermore, it can be appreciated that the unitary structure provides better consistency and sealing than the extra-assembled structure, which facilitates improved protection of the battery module 100.

Please refer to fig. 4. In some embodiments, the connector module 200 includes a carrier 210 and an electrical connector 220 detachably connected to the carrier 210; the bearing portion 210 is fixedly connected to an inner wall surface of the housing 300. The bearing part 210 is fixedly connected with the inner wall surface of the housing 300, and the bearing part 210 is detachably connected with the electrical connector 220, so that the connector module 200 and the housing 300 are fixed, and the structural stability of the battery is improved.

In some embodiments, the supporting portion 210 may have a cavity, and the electrical connector 220 is disposed through the cavity of the supporting portion 210. The carrier 210 may expose the first connection portion and the second connection portion of the electrical connector 220 for electrical connection.

In some embodiments, the bearing portion 210 is detachably connected to the electrical connector 220, and the bearing portion 210 and the electrical connector 220 may be detachably connected through a snap structure or a key structure.

Please refer to fig. 4 and 7. In some embodiments, the bearing part 210 is provided with a limiting groove 201, and the inner wall of the housing 300 is provided with a limiting protrusion 202, and the limiting protrusion 202 is embedded in the limiting groove 201. The stopper groove 201 may be provided at a surface of the carrier 210 perpendicular to the axial direction of the connector module 200. The limiting groove 201 may be a plurality of independent grooves, and correspondingly, a plurality of limiting protrusions 202 may be disposed on the inner wall of the housing 300. The limiting groove 201 may be an annular groove structure, the limiting groove 201 continuously extends along the circumferential direction of the connector module 200 to form an end-to-end structure, and correspondingly, the limiting protrusion 202 may be an annular protrusion structure. The inner wall of the housing 300 has a limiting protrusion 202, which may be a protrusion of the inner wall of the housing 300 in a direction away from the outer wall of the housing 300 to form the limiting protrusion 202. The bearing part 210 is provided with a limiting groove 201, and the bearing part 210 may be recessed towards a direction far away from the inner wall of the housing 300 to form the limiting groove 201. The position-limiting protrusion 202 and the position-limiting groove 201 may be interference-fitted. It is advantageous to improve the connection stability and sealability between the connector module 200 and the housing 300. The limiting groove 201 can be of an annular groove structure, the limiting protrusion 202 can be of an annular protrusion structure, the limiting protrusion 202 is embedded into the limiting groove 201, the bearing portion 210 and the shell 300 are fixedly connected, and meanwhile the internal structure of the battery can be sealed.

In some embodiments, the inner wall of the housing 300 is provided with a limiting groove 201, the bearing part 210 is provided with a limiting protrusion 202, and the limiting protrusion 202 is embedded in the limiting groove 201. The position limiting groove 201 on the inner wall of the housing 300 may be formed by recessing the inner wall surface of the housing 300 toward the outer wall surface of the housing 300 to form the position limiting groove 201. The position-limiting protrusion 202 of the bearing part 210 may be formed by the bearing part 210 protruding toward the housing 300 to form the position-limiting protrusion 202. The limiting protrusion 202 is embedded in the limiting groove 201, so that the bearing part 210 is fixedly connected with the shell 300. The shapes of the limiting groove 201 and the limiting protrusion 202 can refer to the above embodiments, and are not described herein again.

Please refer to fig. 4 and 7. In some embodiments, the limiting groove 201 extends continuously on the surface of the bearing portion 210 near the outer protrusion 312 along the axial direction of the connector module 200 to form an annular groove, and the limiting protrusion 202 is an annular protrusion. The groove depth direction of the stopper groove 201 may be parallel to the axial direction of the connector module. The surface of the bearing part 210 close to the outer convex part 312 of the limiting groove 201 continuously extends to form an annular groove, and the annular groove structure enables a sealing structure to be formed between the connector module 200 and the shell 300, so that water, impurities and the like can be prevented from entering the battery, and the service life of the battery can be prolonged.

Please refer to fig. 4 and 7. In some embodiments, the limiting protrusion 202 is in clearance fit with the limiting groove 201, and a sealing member 400 is disposed between the limiting protrusion 202 and the limiting groove 201. Clearance fit between spacing arch 202 and spacing recess 201 is favorable to reducing the preparation degree of difficulty and the assembly degree of difficulty. The sealing member 400 is disposed between the limiting protrusion 202 and the limiting groove 201, so that the sealing reliability between the connector module 200 and the housing 300 can be improved.

In some embodiments, the seal 400 may be a sealant. The sealant can have a flowing state and a solidifying state, the flowing state can enable the sealant to be convenient to fit with the limiting protrusion 202 and the limiting groove 201 which are in clearance fit, the sealing performance between the connector module 200 and the shell 300 is improved, and after the limiting protrusion 202 and the limiting groove 201 are assembled, the sealant is solidified, so that the sealing performance is maintained and meanwhile fixed connection is achieved. In other embodiments, the seal 400 may be a gasket.

Please refer to fig. 4 and 7. In some embodiments, the battery may further include a circuit board 500. The connector module 200 is electrically connected to the battery module 100 through the circuit board 500. It is understood that there is electrical connection between the connector module 200 and the circuit board 500. Specifically, the electrical connection with the circuit board 500 can be realized through the electrical connector 220 of the connector module 200. The electrical connectors 220 may be pins, which can be inserted into the circuit board 500 and fixed to the circuit board 500 by soldering. There is electrical connection between the battery module 100 and the circuit board 500. So that electrical connection between the connector module 200 and the battery module 100 can be accomplished.

Please refer to fig. 4. In some embodiments, the supporting portion 210 includes a positioning post 211, the circuit board 500 includes a receiving hole 501 matched with the positioning post 211, and the positioning post 211 is inserted into the receiving hole 501. Positioning and fixing between the connector module 200 and the circuit board 500 are facilitated by providing positioning posts 211 at the carrier portion 210. The positioning column 211 may be plural.

Please refer to fig. 4, 5 and 7. In some embodiments, the battery may further include: the supporting plate 600, the circuit board 500 is located between the supporting plate 600 and the connector module 200, the supporting plate 600 is located between the battery module 100 and the circuit board 500, the supporting plate 600 is provided with a copper bar, and the battery module 100 is electrically connected with the circuit board 500 through the copper bar. The support plate 600 may be blocked between the battery module 100 and the circuit board 500. Protecting the battery module 100 while facilitating a reduction in the risk of shorting between the circuit board 500 and the battery module 100. The support plate 600 may be a plastic support plate. The battery module 100 may include a battery cell 110, and the battery cell 110 may have a tab 111. The tab 111 of the battery cell 110 may be connected to the copper bar of the supporting plate 600 by welding. The battery module 100 is electrically connected to the circuit board 500 through copper bars. The Circuit Board 500 may be a Printed Circuit Board 500 (PCB).

Please refer to fig. 7. In some embodiments, the supporting plate 600 and the circuit board 500 may be fixedly coupled by a screw 810 and a nut 820.

Please refer to fig. 4 and 7. In some embodiments, the battery may further include a plurality of support posts 700 supported between the support plate 600 and the circuit board 500. By providing a plurality of support posts 700. The supporting post 700 can improve the tolerance of external force between the supporting plate 600 and the circuit board 500, and is beneficial to reducing the risk of short circuit between the circuit board 500 and the supporting plate 600 under the extrusion of the external force.

In some embodiments, the battery may further include a plurality of support posts 700 supported between the support plate 600 and the circuit board 500, and an orthographic projection of the connector module 200 on the support plate 600 covers at least a portion of the orthographic projection of the support posts 700 on the support plate 600. Because the connector can lead to circuit board 500 to receive the extrusion and the drawing of external force and influence the stability of the electric connection between copper bar and circuit board 500 in the plug-in process. Through setting up the support column 700, and make the orthographic projection on the backup pad 600 cover partial orthographic projection of support column 700 on the backup pad 600 at least to make the supporting effect concentrate on the region that the connector module 200 of frequent atress corresponds, more be favorable to reducing the short circuit risk between circuit board 500 and the backup pad 600, improve battery inside electric connection's stability and battery life.

Please refer to fig. 6. In some embodiments, the housing 300 includes a first housing 310 and a second housing 320 detachably connected, the first housing 310 includes a body portion 311 and an external protrusion 312, and the battery module 100 is placed in the second housing 320. The support plate 600 may be located at one side of the battery module 100 adjacent to the first case 310. The battery module 100 is protected, and short circuit risks are reduced.

Please refer to fig. 7. In some embodiments, the inner wall surface of the convex portion 312 is provided with a convex guide rib 301. The protruding guide rib 301 may be plural. The convex guide rib 301 may be provided on an inner wall surface on which the convex portion 312 is oppositely provided; alternatively, the convex guide ribs 301 may be provided on each inner wall surface of the convex portion 312. One or more convex guide ribs 301 may be provided on a single inner wall surface of the convex portion 312. The width of the protruding guide rib 301 may be gradually reduced along the depth direction of the protruding portion 312, which is beneficial for providing a guiding function when the connector module 200 is assembled with the housing 300. The protruding guide ribs 301 may contact the connector module 200, thereby facilitating determination of the fitting position of the connector module 200 in the battery.

In the present specification, the embodiments themselves are emphasized differently from the other embodiments, and the embodiments can be explained in contrast to each other. Any combination of the embodiments in this specification based on general technical common knowledge by those skilled in the art is encompassed in the disclosure of the specification.

The features of the above embodiments may be arbitrarily combined, and for the sake of brevity, all possible combinations of the features in the above embodiments are not described, but should be construed as being within the scope of the present specification as long as there is no contradiction between the combinations of the features.

The above description is only a few embodiments of the present disclosure, and should not be taken as limiting the present disclosure, and any modifications, equivalents and the like that are within the spirit and principle of the present disclosure should be included in the disclosure of the present disclosure.

Claims (12)

1. A battery, comprising:

the battery pack comprises a battery module and a connector module electrically connected with the battery module;

the battery further comprises a shell, the shell comprises a main body portion and an outer protruding portion protruding out of the main body portion, the shell accommodates the battery module, the outer protruding portion surrounds the circumferential direction of the connector module, and the main body portion and the outer protruding portion are of an integrated structure.

2. The battery of claim 1, wherein the connector module comprises a carrier and an electrical connector removably connected to the carrier; the bearing part is fixedly connected with the inner wall surface of the shell.

3. The battery of claim 2, wherein the bearing part is provided with a limiting groove, and the inner wall of the shell is provided with a limiting protrusion embedded in the limiting groove.

4. The battery according to claim 3, wherein the stopper groove extends continuously along the axial direction of the connector module on the surface of the bearing part adjacent to the external protrusion to form an annular groove, and the stopper protrusion is an annular protrusion.

5. The battery of claim 3, wherein the limiting protrusion is in clearance fit with the limiting groove, and a sealing element is arranged between the limiting protrusion and the limiting groove.

6. The cell defined in claim 5, wherein the seal member is a sealant.

7. The battery of claim 2, further comprising: the connector module is electrically connected with the battery module through the circuit board.

8. The battery of claim 7, wherein the supporting portion includes a positioning post, the circuit board includes a receiving hole engaged with the positioning post, and the positioning post is inserted into the receiving hole.

9. The battery of claim 7, further comprising: the circuit board is located the backup pad with between the connector module, the backup pad is located battery module with between the circuit board, be provided with the copper bar in the backup pad, battery module passes through the copper bar with circuit board electric connection.

10. The battery of claim 9, further comprising: a plurality of support posts supported between the support plate and the circuit board, an orthographic projection of the connector module on the support plate at least partially covers an orthographic projection of the support posts on the support plate.

11. The battery according to claim 1, wherein the housing includes a first housing and a second housing that are detachably connected, the first housing includes the main body portion and the convex portion, and the battery module is placed in the second housing.

12. The battery according to claim 1, wherein an inner wall surface of the convex portion is provided with a convex guide rib.

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