CN218731521U

CN218731521U - Battery device

Info

Publication number: CN218731521U
Application number: CN202222982988.9U
Authority: CN
Inventors: 张克泽; 李炜; 周世友
Original assignee: China Lithium Battery Technology Co Ltd
Current assignee: China Lithium Battery Technology Co Ltd
Priority date: 2022-11-09
Filing date: 2022-11-09
Publication date: 2023-03-24
Anticipated expiration: 2032-11-09

Abstract

The utility model relates to a battery technology field provides a battery device, include: a battery case; the battery assembly is arranged in the battery box body and comprises a plurality of single batteries; the circuit board is arranged on one side of the battery assembly and is connected with the single battery, and a connector is arranged on one side of the circuit board, which is far away from the battery assembly; the insulating cover is at least partially arranged on one side, away from the battery pack, of the circuit board and comprises a main body part and a warping part, an avoidance opening is formed in the main body part, and the warping part is movably connected to the main body part so as to shield or release the avoidance opening; the avoiding opening and the connector are arranged oppositely, so that the warping portion abuts against the connector, compression protection of the butt joint connector is achieved, the problems that the connector is loosened after being used for a long time and the like are avoided, and safety use performance of the battery device is improved.

Description

Battery device

Technical Field

The utility model relates to a battery technology field especially relates to a battery device.

Background

In the related art, a battery case is used to accommodate a battery assembly formed by a plurality of batteries, so as to protect the batteries. The battery pack may be connected to a circuit board, and the circuit board may be provided with a connector for inserting a harness, but after a long time use, the connector is prone to loosening and the like.

SUMMERY OF THE UTILITY MODEL

The utility model provides a battery device to improve battery device's performance.

The utility model provides a battery device, include:

a battery case;

the battery assembly is arranged in the battery box body and comprises a plurality of single batteries;

the circuit board is arranged on one side of the battery assembly and is connected with the single battery, and a connector is arranged on one side of the circuit board, which is far away from the battery assembly;

the insulating cover is at least partially arranged on one side, away from the battery pack, of the circuit board and comprises a main body part and a warping part, an avoidance opening is formed in the main body part, and the warping part is movably connected to the main body part so as to shield or release the avoidance opening;

the avoiding opening is arranged opposite to the connector, so that the warping portion abuts against the connector.

The utility model discloses battery device includes battery box, battery pack, circuit board and insulating lid, and battery pack sets up in the battery box, and the circuit board sets up in one side of battery pack, and is connected with battery cell, and the at least part of insulating lid sets up in one side that the circuit board deviates from battery pack to realize insulating the isolation. Be provided with the connector through the one side that deviates from battery pack at the circuit board, and the main part of insulating lid is formed with dodges the mouth, and the warpage portion movably of insulating lid connects in the main part to can make the warpage portion support and press the connector, with this realize the protection that compresses tightly of butt joint plug-in components, avoid the connector to appear not hard up scheduling problem after long-time the use, thereby improve battery device's safety in utilization performance.

Drawings

For a better understanding of the present disclosure, reference may be made to the embodiments illustrated in the following drawings. The components in the drawings are not necessarily to scale, and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the present disclosure. In addition, the relevant elements or components may be arranged differently as is known in the art. Further, in the drawings, like reference characters designate the same or similar parts throughout the several views.

Wherein:

FIG. 1 is an exploded schematic view of a battery device according to an exemplary embodiment;

fig. 2 is a schematic structural view illustrating an insulating cover of a battery device according to an exemplary embodiment;

fig. 3 is a partial structural view illustrating an insulating cover of a battery device according to an exemplary embodiment.

The reference numerals are explained below:

10. a battery case; 20. a battery assembly; 21. a single battery; 30. a circuit board; 31. a connector assembly; 40. an insulating cover; 41. a main body portion; 411. avoiding the mouth; 412. a housing chamber; 413. avoiding the notch; 42. a warping part.

Detailed Description

The technical solutions in the exemplary embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the exemplary embodiments of the present disclosure. The example embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure, and it is, therefore, to be understood that various modifications and changes may be made to the example embodiments without departing from the scope of the present disclosure.

In the description of the present disclosure, unless explicitly specified or limited otherwise, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more; the term "and/or" includes any and all combinations of one or more of the associated listed items. In particular, reference to "the" object or "an" object is also intended to mean one of many such objects possible.

The terms "connected," "secured," and the like are to be construed broadly and unless otherwise stated or indicated, and for example, "connected" may be a fixed connection, a removable connection, an integral connection, an electrical connection, or a signal connection; "connected" may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present disclosure can be understood as a specific case by a person skilled in the art.

Further, in the description of the present disclosure, it is to be understood that the directional words "upper", "lower", "inner", "outer", etc., which are described in the exemplary embodiments of the present disclosure, are described at the angles shown in the drawings, and should not be construed as limiting the exemplary embodiments of the present disclosure. It will also be understood that, in this context, when an element or feature is referred to as being "on", "under", or "inner", "outer" with respect to another element(s), it can be directly on "," under ", or" inner "," outer "with respect to the other element(s), or indirectly on", "under", or "inner", "outer" with respect to the other element(s) via intervening elements.

An embodiment of the present invention provides a battery device, please refer to fig. 1 to fig. 3, the battery device includes: a battery case 10; the battery pack 20, the battery pack 20 is arranged in the battery box body 10, the battery pack 20 includes a plurality of single batteries 21; the circuit board 30 is arranged on one side of the battery assembly 20, and is connected with the single battery 21, and a connector 31 is arranged on one side of the circuit board 30, which is far away from the battery assembly 20; the insulating cover 40, at least part of the insulating cover 40 is disposed on one side of the circuit board 30 departing from the battery assembly 20, the insulating cover 40 includes a main body portion 41 and a warping portion 42, the main body portion 41 is formed with an avoiding opening 411, and the warping portion 42 is movably connected to the main body portion 41 to shield or release the avoiding opening 411; the escape opening 411 is disposed opposite to the connector 31 so that the warping portion 42 presses against the connector 31.

The utility model discloses a battery device of an embodiment includes battery box 10, battery pack 20, circuit board 30 and insulating lid 40, and battery pack 20 sets up in battery box 10, and circuit board 30 sets up in one side of battery pack 20, and is connected with battery cell 21, and the at least part of insulating lid 40 sets up in one side that circuit board 30 deviates from battery pack 20 to realize insulating the isolation. Through being provided with connector 31 in the one side that circuit board 30 deviates from battery pack 20, and the main part 41 of insulating cover 40 is formed with dodge mouth 411, and the warpage portion 42 movably of insulating cover 40 is connected in main part 41 to can make warpage portion 42 support and press connector 31, with this realization to the protection that compresses tightly of plug-in components 31, avoid connector 31 to appear not hard up scheduling problem after long-time the use, thereby improve battery device's safety in utilization ability.

It should be noted that the circuit board 30 may be connected to the battery cells 21 to obtain voltage information or temperature information of the battery cells 21, the connector 31 on the circuit board 30 may be connected to the BMS battery management module through a wire harness to transmit the voltage information or temperature information to the BMS battery management module, and the insulating cover 40 may cover the circuit board 30 to insulate the circuit board 30 and the battery assembly 20 from external structures, for example, the insulating cover 40 may insulate the circuit board 30 and the battery assembly 20 from the cover plate. The insulating cover 40 is designed into the main body 41 and the warping portion 42, the main body 41 is provided with the escape opening 411, and the warping portion 42 is movably connected to the main body 41 to shield or release the escape opening 411, that is, the warping portion 42 can rotate and deform relative to the main body 41 under the action of external force, so that after the insulating cover 40 is installed, the warping portion 42 can change position under the abutting pressure of the connector 31, thereby providing reliable pressing force for the connector 31, ensuring that the connector 31 cannot have the problems of looseness and the like after long-time use, and cannot be difficult to install due to the existence of the connector 31 in the installation process of the insulating cover 40, and the warping portion 42 on the escape opening 411 is movably connected to the main body 41 to form reliable escape.

The unit cell device includes a cell and an electrolyte, and is a minimum unit capable of performing an electrochemical reaction such as charge/discharge. The battery cell refers to a unit formed by winding or laminating a stack including a first electrode, a separator, and a second electrode. When the first electrode is a positive electrode, the second electrode is a negative electrode. Wherein the polarities of the first electrode and the second electrode can be interchanged. The battery core is arranged in the battery shell

The single battery is a laminated battery, which is convenient to pack and can be processed to obtain a battery with longer length. Specifically, electric core is lamination formula electric core, and electric core has first pole piece that stacks up each other, with first pole piece opposite electric property's second pole piece and the diaphragm of setting between first pole piece and second pole piece to make many to pile up and form lamination formula electric core to first pole piece and second pole piece.

Optionally, the single battery may be a winding battery, that is, a first pole piece, a second pole piece opposite to the first pole piece in electrical property, and a diaphragm sheet disposed between the first pole piece and the second pole piece are wound to obtain a winding battery core.

In one embodiment, the circuit board 30 may be disposed on the top of the battery assembly 20, and further, at least a portion of the insulating cover 40 is disposed on the top of the battery assembly 20, thereby covering the circuit board 30. Alternatively, the circuit board 30 may be disposed at a side portion of the battery assembly 20, and further, at least a portion of the insulating cover 40 is disposed at the side portion of the battery assembly 20, thereby achieving the covering of the circuit board 30. The insulating cover 40 provides insulation protection for the circuit board 30, for example, when the circuit board 30 is disposed on top of the battery assembly 20, the insulating cover 40 may be used to provide insulation protection for the top cover of the battery case 10 and the circuit board 30. Alternatively, when the circuit board 30 is disposed at the side of the battery assembly 20, the insulating cover 40 may be used to protect the side plates of the battery case 10 from the circuit board 30.

In one embodiment, at least a portion of the connector 31 is located in the avoiding opening 411, so that the warping portion 42 is disposed obliquely with respect to the main body portion 41 toward a side away from the circuit board 30, that is, the warping portion 42 can be reliably pressed on the connector 31, thereby providing a relatively high pressure to the connector 31 and ensuring the mounting stability of the connector 31.

When the insulating cover 40 is in the original state, the warping portion 42 shields the avoiding opening 411, that is, the warping portion 42 does not warp upwards, and after the insulating cover 40 is mounted in place, at least a part of the connector 31 is located in the avoiding opening 411 to press the warping portion 42 to deform, so that the warping portion 42 is obliquely arranged towards one side away from the circuit board 30 relative to the main body portion 41, and the butt-joint plug-in unit 31 is reliably pressed.

In one embodiment, the top end of the connector 31 away from the circuit board 30 is located outside the avoiding opening 411, that is, a part of the connector 31 may pass through the avoiding opening 411, so as to be located outside the avoiding opening 411, and the connector 31 deforms the warping portion 42, so that the warping portion 42 reliably presses the connector 31, thereby avoiding the problem of loosening the connector 31 and the like.

A part of the connector 31 can pass through the avoiding opening 411, at this time, the warping portion 42 deforms and can be arranged in an upward inclined manner, for example, when the circuit board 30 is arranged at the top of the battery assembly 20, the insulating cover 40 can be used for realizing the insulating protection of the top cover of the battery box body 10 and the circuit board 30, at this time, the existence of the warping portion 42 can limit the top cover, the top cover is prevented from being too close to the circuit board 30, thereby a reliable insulating distance is ensured between the top cover and the circuit board 30, and the top cover can also provide pressure for the warping portion 42, thereby further ensuring that the warping portion 42 compresses the connector 31, and further ensuring that the connector 31 cannot be loosened.

In one embodiment, the main body portion 41 and the warping portion 42 are integrally formed, so that manufacturing efficiency may be improved and structural stability may be facilitated.

In the molding process of the insulating cover 40, the main body portion 41 may be formed first, and then the main body portion 41 may be scored to cut the warping portion 42, that is, the warping portion 42 may be shielded in the escape opening 411, and the warping portion 42 may be deformed to be deformed under the abutting force of the connector 31, so as to press the connector 31.

In one embodiment, the area of the warping portion 42 is not greater than the area of the avoiding opening 411, so that after the warping portion 42 is separated from the connector 31, the warping portion 42 is received in the avoiding opening 411, that is, the warping portion 42 is embedded in the main body portion 41, so that the insulating cover 40 does not have a protruding structure after being molded, the structure is convenient to store, and the insulating cover is not easy to damage.

In one embodiment, the warping portion 42 is a rectangular body, one end of the warping portion 42 is connected to the main body portion 41, and the other three ends of the warping portion 42 are suspended, so that the warping portion 42 can rotate relative to the main body portion 41 under the abutting force of the connector 31.

During the installation of the insulating cover 40, the insulating cover 40 may be pressed against the battery assembly 20, for example, the insulating cover 40 may be connected to the battery case 10, or the insulating cover 40 may be connected to a structure inside the battery case 10, during which the connector 31 may deform the top of the warping portion 42, that is, the warping portion 42 may rotate relative to the main body portion 41, so as to press the connector 31, thereby ensuring that the connector 31 may maintain relatively high stability during the whole use process without loosening and other problems.

In one embodiment, the avoiding opening 411 is disposed in the middle of the insulating cover 40, so that the avoiding opening 411 is a through hole sealed in the circumferential direction, and on the basis that the insulating cover 40 has a sufficient insulating area, the warping portion 42 can stably abut against the connector 31, thereby ensuring the stability of the connector 31.

The escape opening 411 is provided in the middle of the insulation cover 40, and the wire harness can be connected to the BMS battery management module by the lower docking connector 31 of the insulation cover 40, i.e., the insulation cover 40 can also realize the protection of the wire harness, thereby forming the protection of the wire harness.

In one embodiment, as shown in fig. 1 and 2, the connectors 31 are disposed in the middle of the circuit board 30, the number of the connectors 31 is multiple, the number of the relief openings 411 is multiple, and the number of the warping portions 42 is multiple, so that the warping portions 42 can respectively press against the connectors 31, thereby ensuring that the connectors 31 can be reliably fixed on the circuit board 30.

The battery device may include a plurality of circuit boards 30, and one or more connectors 31 may be disposed on the circuit board 30, so that the plurality of warped portions 42 respectively press against the plurality of connectors 31 by disposing the plurality of warped portions 42 on the main body portion 41.

In one embodiment, as shown in fig. 1 and fig. 2, a receiving chamber 412 is formed on a side of the main body portion 41 facing the battery assembly 20, and at least a portion of the circuit board 30 is located in the receiving chamber 412, so that the main body portion 41 can reliably protect the circuit board 30, and effective insulation protection of the circuit board 30 can be achieved.

In one embodiment, the upper portion of the battery assembly 20 is located in the accommodating chamber 412, which not only improves the space utilization of the battery device without causing the height space of the battery device to be too large, but also enables the insulating cover 40 to form an insulating protection for the upper portion of the battery assembly 20.

The plurality of single batteries 21 of the battery assembly 20 can be connected through the bus bar, the accommodating chamber 412 is formed on one side of the main body portion 41 facing the battery assembly 20, and the accommodating chamber 412 can also be used for accommodating other conductive structures such as the bus bar, so that the insulating cover 40 can be effectively insulated and protected. The insulating cover 40 may be of plastic construction. The insulation cover 40 may be of a rubber structure, in some embodiments it is not excluded that the insulation cover 40 may be of a metal structure, but it is necessary to ensure that the outer surface of the insulation cover 40 is coated with an insulation coating to ensure insulation performance, and that the metal structure needs to have sufficient elastic deformability.

In one embodiment, the circuit board 30 is disposed on the upper portion of the battery assembly 20, and at least a portion of the insulating cover 40 is disposed above the battery assembly 20, so that the disposition position of the circuit board 30 can be distributed reasonably, and the connection between the circuit board 30 and the single battery 21 can be facilitated, thereby improving the space utilization rate of the battery device, and increasing the capacity density of the battery device to the maximum extent.

The post assembly of the battery cell 21 may be located at the top, and the bus bar may connect the post assemblies of the plurality of battery cells 21, and the circuit board 30 may be connected to the bus bar to obtain voltage information, so that the circuit board 30 may be conveniently connected to the bus bar at the upper portion of the battery assembly 20. As shown in fig. 1, the circuit board 30 is disposed at an upper portion of the battery assembly 20, and at least a portion of the insulating cover 40 is disposed above the battery assembly 20.

In one embodiment, as shown in fig. 2 and 3, the end of the main body 41 is provided with an escape notch 413, so that the harness can be escaped when the connector 31 is connected by the harness, or the escape notch 413 can be used for escaping from the end fixing structure of the circuit board 30, for example, when the end of the circuit board 30 is fixed to the battery case 10 by a connecting piece, the escape notch 413 can be used for escaping from the connecting piece, or the escape notch 413 can escape from other structures inside the battery device, which is not limited herein. The avoidance gaps 413 may be provided in plural, and the avoidance gaps 413 may be provided at both opposite end portions of the main body portion 41, and the structures of the avoidance gaps 413 may be identical, or the structures of the avoidance gaps 413 may not be identical, which is not limited herein.

It should be noted that the battery assembly may further include end plates and side plates for fixing the plurality of single batteries 21, that is, the battery assembly forms a battery module.

A plurality of battery cells 21 can form and set up in the battery box behind the battery module, and a plurality of battery cells 21 can be fixed through end plate and curb plate. A plurality of battery cells 21 can be directly disposed in the battery box, i.e., without grouping a plurality of batteries, and at this time, the end plates and the side plates can be removed.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and example embodiments be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A battery device, comprising:

a battery case (10);

a battery assembly (20), wherein the battery assembly (20) is arranged in the battery box body (10), and the battery assembly (20) comprises a plurality of single batteries (21);

the circuit board (30) is arranged on one side of the battery assembly (20) and is connected with the single battery (21), and a connector assembly (31) is arranged on one side, away from the battery assembly (20), of the circuit board (30);

the insulating cover (40), at least part of the insulating cover (40) is arranged on one side of the circuit board (30) deviating from the battery assembly (20), the insulating cover (40) comprises a main body part (41) and a warping part (42), the main body part (41) is provided with an avoiding opening (411), and the warping part (42) is movably connected to the main body part (41) to shield or release the avoiding opening (411);

the avoiding opening (411) and the connector (31) are arranged oppositely, so that the warping portion (42) is pressed against the connector (31).

2. The battery device according to claim 1, wherein at least a portion of the connector (31) is located in the avoiding opening (411) such that the warping portion (42) is disposed obliquely with respect to the main body portion (41) toward a side away from the circuit board (30).

3. The battery device according to claim 2, wherein the top end of the connector (31) away from the circuit board (30) is located outside the avoiding opening (411).

4. The battery device according to claim 2 or 3, wherein the main body portion (41) and the warping portion (42) are of an integrally molded structure.

5. The battery device according to claim 4, wherein the area of the warping portion (42) is not greater than the area of the avoiding opening (411), so that after the warping portion (42) is separated from the connector (31), the warping portion (42) is accommodated in the avoiding opening (411).

6. The battery device according to claim 5, wherein the warping portion (42) is a rectangular body, one end of the warping portion (42) is connected to the main body portion (41), and the other three ends of the warping portion (42) are suspended.

7. The battery device according to any one of claims 1 to 3, wherein the avoiding opening (411) is provided in a middle portion of the insulating cover (40) such that the avoiding opening (411) is a circumferentially closed through-hole.

8. The battery device according to any one of claims 1 to 3, wherein the connector (31) is provided in the middle of the circuit board (30), the connectors (31) are plural, the avoidance opening (411) is plural, and the warping portion (42) is plural.

9. The battery device according to claim 8, wherein a side of the main body portion (41) facing the battery assembly (20) is formed with a receiving chamber (412), and at least a portion of the circuit board (30) is located in the receiving chamber (412).

10. The battery device according to claim 9, wherein an upper portion of the battery assembly (20) is located within the receiving chamber (412).

11. The battery device according to any one of claims 1 to 3, wherein the circuit board (30) is disposed at an upper portion of the battery assembly (20), and at least a portion of the insulating cover (40) is disposed above the battery assembly (20).

12. A battery device according to any one of claims 1 to 3, characterized in that the end of the main body part (41) is provided with an escape notch (413).