CN216720242U - Battery pack - Google Patents

Abstract

The present invention provides a battery pack, including: a housing; the battery cell module is arranged in the shell; the main board is arranged in the shell, the main board cover is arranged on the battery cell module, and the main board is connected with the battery module; be equipped with voltage collector on the mainboard, voltage collector is used for gathering the voltage of battery module. The technical scheme of the utility model can effectively solve the problem of large volume of the battery pack in the related technology.

Description

Battery pack

Technical Field

The utility model relates to the field of lithium batteries, in particular to a battery pack.

Background

Two-wheeled electric motor car receives people's favor more and more as a neotype instrument of riding instead of walk, and two-wheeled electric motor car's power is derived from power battery, and power battery plays very important effect to environmental protection as a green energy, receives people's attention more and more. Generally include electric core module, circuit board and voltage collector in the battery package, voltage that voltage collector can gather electric core module.

The voltage collector and the circuit board in the present battery pack are separately arranged, the voltage collector is connected with the circuit board through a wire, the voltage collector and the circuit board (mainboard) need to be electrically connected with the battery cell module in the battery pack, but the voltage collector and the circuit board in the arrangement mode can occupy a larger volume in the battery pack, so that the whole volume of the battery pack is increased, and the miniaturization design of the battery pack is not facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a battery pack to solve the problem of large volume of the battery pack in the related art.

In order to achieve the above object, the present invention provides a battery pack, comprising: a housing; the battery cell module is arranged in the shell; the main board is arranged in the shell, the main board cover is arranged on the battery cell module, and the main board is connected with the battery module; be equipped with voltage collector on the mainboard, voltage collector is used for gathering the voltage of battery module.

Further, be provided with the limiting plate that sets up with the cooperation of electricity core module in the casing.

Further, be provided with the adhesive linkage on the limiting plate and the contact surface of electricity core module, the adhesive linkage is used for bonding electricity core module and limiting plate.

Further, the limiting plate is provided with the holding tank of holding electricity core module, and the holding tank bottom is provided with the adhesive linkage, and the adhesive linkage is used for bonding electricity core module and holding tank bottom.

Further, the casing includes that the base establishes the apron on the base with the lid, and electricity core module and limiting plate all set up in the base, and the apron includes the apron body and sets up in the clamp plate of apron body below, and the clamp plate is with mainboard crimping on electricity core module.

Further, the battery core module comprises a plurality of battery core groups which are connected in series, a plurality of installation spaces are arranged in the base, the plurality of battery core groups and the plurality of installation spaces are in one-to-one correspondence, and the limiting plate is arranged in the installation spaces.

Furthermore, a plurality of partition structures are arranged on the base, and the base is partitioned into a plurality of installation spaces matched with the electric core group by the partition structures.

Further, be provided with a plurality of first division boards of first division board and second division board in the base and set up at the length direction of base interval, the second division board includes a plurality ofly, and the second division board sets up between two adjacent first division boards.

Further, the pressure plate crimps the main plate to the partition structure.

Further, the apron body includes the roof and sets up in the surrounding edge in the roof circumference outside, and the clamp plate sets up in the below of roof, is provided with the mounting groove on the upper surface of base, and the surrounding edge cooperates with the mounting groove joint.

By applying the technical scheme of the utility model, the voltage collector is directly arranged on the mainboard, the anode and the cathode of the battery core group in the battery core module are both connected to the voltage collector, and the voltage collector can obtain the total voltage of the whole battery module through the measured voltage of each battery core group. The connection mode enables the voltage collector not to be connected with the main board through a wire, so that the assembly steps of the battery are saved, the assembly efficiency of the battery is greatly improved, the size of the battery pack is greatly reduced, and the miniaturization design of the battery pack is facilitated.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 shows a top view of an embodiment of a battery according to the utility model;

FIG. 2 shows a cross-sectional view of the battery of FIG. 1 in the direction A-A;

fig. 3 shows an exploded view of the battery of fig. 1; and

fig. 4 is a perspective view schematically illustrating an exploded view of the battery of fig. 1.

Wherein the figures include the following reference numerals:

1. a housing; 2. an installation space; 10. a base; 11. a base plate; 12. a side plate; 121. mounting grooves; 13. a limiting plate; 14. a partition structure; 141. a first partition plate; 142. a second partition plate; 20. a battery cell module; 21. the electric core group; 211. an electric core; 30. a cover plate; 31. a cover plate body; 311. a top plate; 312. surrounding edges; 32. pressing a plate; 40. a main board; 50. a voltage collector; 60. and (7) connecting the sheets.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

As shown in fig. 1 to 4, the battery of the present embodiment includes: casing 1, electric core module 20, mainboard 40 and voltage collector 50. The battery cell module 20 is arranged in the casing 1; the main board is arranged in the shell, the main board 40 covers the battery cell module 20, and the main board 40 is connected with the battery cell module 20; be equipped with voltage collector 50 on the mainboard 40, voltage collector 50 is used for gathering the voltage of electric core module 20.

In this embodiment, when the battery cell module 20 is disposed in the casing 1, the battery cell module 20 can be directly bonded to the bottom of the casing 1, so as to reinforce the stability of the battery cell module 20 in the casing 1.

By using the technical scheme of this embodiment, the voltage collector 50 is directly disposed on the main board 40, the positive electrode and the negative electrode of the cell group in the cell module 20 are both connected to the voltage collector 50, and the voltage collector 50 can obtain the total voltage of the whole cell module 20 through the measured voltages of the cell groups. The connection mode enables the voltage collector 50 to be connected with the mainboard 40 without wires, so that the assembly steps of the battery are saved, the assembly efficiency of the battery is greatly improved, the size of the battery pack is greatly reduced, and the miniaturization design of the battery pack is facilitated.

It should be noted that, as shown in fig. 2 to fig. 4, the battery includes a connecting sheet 60, the connecting sheet 60 is disposed in the installation space 2, the connecting sheet 60 includes a positive connecting sheet and a negative connecting sheet, a first end of the positive connecting sheet is electrically connected to the positive electrode of the electric core set 21, a second end of the positive connecting sheet is connected to the main board 40, a first end of the negative connecting sheet is electrically connected to the negative electrode of the electric core set 21, and a second end of the negative connecting sheet is connected to the main board 40. Preferably, a plurality of voltage collectors 50 capable of collecting the voltage of each of the cell groups may be provided. Specifically, the plurality of voltage collectors 50 and the plurality of connecting pieces 60 are arranged in a one-to-one correspondence manner, and the connecting pieces 60 are directly connected to the voltage collectors 50, so that voltage collection of each electric core group 21 is realized. The sum of the voltages of the electric core groups 21 is the total voltage of the batteries.

On the other hand, the current installation mode of the battery core and the shell is as follows: set up the installing support in the shell, connect electric core on the shell through the installing support, electric core support is generally through the screw connection when fixed with the shell, and this kind of connected mode though can guarantee the fixed stability of electric core, and assembly process is complicated, and assembly efficiency is low. In order to solve the above problem, as shown in fig. 2, in the present embodiment, the battery cell module 20 is adhered inside the casing 1. The battery pack is simple and convenient in assembly mode, and the assembly efficiency of the battery is greatly improved.

Specifically, as shown in fig. 2, in this embodiment, a limiting plate 13 is provided in the casing 1, and the limiting plate 13 is provided with a cell module 20 in a matching manner, and an adhesive layer is provided on a contact surface between the limiting plate 13 and the cell module 20, and the adhesive layer is used for bonding the cell module 20 and the limiting plate 13. Limiting plate 13 is the design structure of imitating, and the shape of its upper surface and the shape adaptation of electric core module 20, above-mentioned structure greatly reduced electric core module 20 the probability that takes place to rock in casing 1, promoted the fixed stability of electric core module 20.

As shown in fig. 2, in the present embodiment, the adhesive layer is disposed on the surface of the limiting plate 13 contacting the cell module 20. Above-mentioned structure can realize spacing to electric core module 20 through limiting plate 13, can realize the bonding of electric core module 20 and shell again simultaneously, simple structure, the processing of being convenient for.

Of course, also can set up the holding tank that holds electric core module 20 on limiting plate 13, the holding tank bottom is provided with the adhesive linkage, the adhesive linkage be used for bonding electric core module 20 and with the holding tank bottom, the holding tank and electric core module 20's shape adaptation, the bottom of electric core module 20 is passed through the adhesive linkage and is bonded bottom the holding tank. The stability that electric core module 20 is connected can further be promoted to above-mentioned structure.

As shown in fig. 2 to 4, in the present embodiment, the casing 1 includes a base 10 and a cover plate 30 covering the base, the cell module 20 and the limiting plate 13 are both disposed in the base 10, the cover plate 30 includes a cover plate body 31 and a pressing plate 32 disposed below the cover plate body 31, and the pressing plate 32 presses the main plate onto the cell module. In the structure, after apron 30 lid is on base 10, electricity core module 20 can be pressed on limiting plate 13 by clamp plate 32, because limiting plate 13 is provided with the adhesive linkage with the position department of electricity core module 20 contact, above-mentioned structure passes through the crimping power of clamp plate 32 with electricity core module 20 crimping on the adhesive linkage, greatly reduced the probability that electricity core module 20 took place to rock between base 10 and apron 30, promoted the fixed stability of electricity core module 20.

As shown in fig. 4, in this embodiment, the battery cell module 20 includes a plurality of battery cell groups 21 connected in series, a plurality of installation spaces 2 are provided in the base 10, the plurality of battery cell groups 21 and the plurality of installation spaces 2 are arranged in a one-to-one correspondence, and the limiting plate 13 is provided in the installation spaces 2. In the structure, the voltage of the single electric core group 21 is small, the single electric core is connected in parallel to form the electric core group 21, and then the electric core group 21 is connected in series to form the electric core module 20 with larger capacity, so that the power energy can be provided for the whole vehicle conveniently. In addition, separate into a plurality of installation space 2 with base 10, set up an electric core group 21 in every installation space 2 and can reduce the influence between the adjacent electric core group 21, avoid when a set of electric core group 21 is overheated to its adjacent other electric core group 21 production influence, promoted the security of battery. Simultaneously, divide into multiunit electric core group 21 with electric core module 20 to it is fixed respectively to every electric core group 21 of group, can promote the holistic fixed stability of electric core module 20.

As shown in fig. 2, in the present embodiment, a plurality of partition structures 14 are disposed on the base, and the partition structures 14 partition the base 10 into a plurality of installation spaces 2 adapted to the electric core pack. The structure forms the installation space 2 through the separation structure 14, which plays a role of separating the electric core group 21, further reduces the influence on other adjacent electric core groups 21 when a group of electric core groups 21 is overheated, and further improves the safety of the battery.

As shown in fig. 2 and 4, in the present embodiment, a plurality of first partition plates 141 and a plurality of second partition plates 142 are provided in the base 10 at intervals in the length direction of the base 10, the second partition plates 142 include a plurality of first partition plates 141, and the second partition plates 142 are provided between two adjacent first partition plates 141. In the structure, one electric core group 21 is arranged in each installation space 2, so that the influence on other adjacent electric core groups 21 caused by overheating of one electric core group 21 is avoided. It should be noted that, in the present embodiment, each battery cell group 21 includes two battery cells 211, one of the battery cells abuts against the limiting plate 13 between the first partition plate 141 and the bottom plate 11, and the other battery cell 211 abuts against the limiting plate between the side plate 12 and the bottom plate 11. All be provided with the adhesive linkage on the limiting plate 13, every electric core 211 can both bond with limiting plate 13. Above-mentioned mode makes every electric core 211 all can be bonded on base 10 to the holistic fixed stability of electric core module 20 has further been promoted.

Note that, in the present embodiment, the base 10 includes a bottom plate 11 and a side plate 12 disposed in a circumferential direction of the bottom plate, and the limit plate 13 is disposed between the first partition plate 141 and the bottom plate 11, and/or the limit plate 13 is disposed between the side plate 12 and the bottom plate 11.

As shown in fig. 2, in the present embodiment, the pressure plate 32 crimps the main plate 40 to the partition structure 14. The above structure can improve the connection stability of the main board 40 in the housing 1.

As shown in fig. 2, in the present embodiment, the cover plate body 31 includes a top plate 311 and a surrounding edge 312 disposed on the circumferential outer side of the top plate 311, the pressing plate 32 is disposed below the top plate 311, the upper surface of the base 10 is provided with a mounting groove 121, and the surrounding edge 312 is in snap fit with the mounting groove 121. In the above structure, the sealing performance of the joint between the base 10 and the cover plate 30 can be improved by the connection mode that the surrounding edge 312 extends into the mounting groove 121, and the probability that other substances enter the battery is reduced.

It should be noted that, the inner wall of the surrounding edge 312 is provided with a buckle, the inner wall of the side plate 12 is provided with a clamping protrusion, and when the surrounding edge 312 extends into the mounting groove 121, the base 10 and the cover plate 30 are connected through the buckle and the clamping protrusion. The structure can improve the sealing performance of the base 10 and the cover plate 30 while realizing quick assembly. In addition, the joint of the base 10 and the cover plate 30 can be sealed in a glue pouring mode, and the sealing performance between the base 10 and the cover plate 30 is further improved.

As shown in fig. 1 to 4, in the present embodiment, the base 10 and the cover 30 are made of a heat conductive material. The heat conductive material may be a heat conductive plastic, a heat conductive metal, a carbon fiber material, a phase change material, or the like. In the structure, because electric core module 20 and base 10 and apron 30 direct contact, base 10 and apron 30 are made by the better material of heat conductivity, consequently the heat that electric core module 20 produced can in time be transmitted to base 10 and apron 30 on to the rapid cooling of electric core module 20 of being convenient for effectively prolongs electric core module 20's life, has effectively solved the difficult problem of electric core module 20 heat dissipation.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

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 (10)

1. A battery pack, comprising:

a housing (1);

the battery cell module (20) is arranged in the shell (1);

the main board (40) is arranged in the shell (1), the main board (40) is covered on the battery cell module (20), and the main board (40) is connected with the battery cell module (20); the main board (40) is provided with a voltage collector (50), and the voltage collector (50) is used for collecting the voltage of the battery cell module (20).

2. The battery pack according to claim 1, wherein a limiting plate (13) is disposed in the casing (1) and is matched with the cell module (20).

3. The battery pack according to claim 2, wherein an adhesive layer is arranged on the contact surface between the limiting plate (13) and the cell module (20), and the adhesive layer is used for adhering the cell module (20) and the limiting plate (13).

4. The battery pack according to claim 2,

limiting plate (13) is provided with the holding tank of electricity core module (20), the holding tank bottom is provided with the adhesive linkage, the adhesive linkage is used for bonding electricity core module (20) with the holding tank bottom.

5. The battery pack according to any one of claims 2 to 4, wherein the casing (1) comprises a base (10) and a cover plate (30) covering the base, the cell module (20) and the limiting plate (13) are both disposed in the base (10), the cover plate (30) comprises a cover plate body (31) and a pressing plate (32) disposed below the cover plate body (31), and the pressing plate (32) presses the main plate (40) onto the cell module (20).

6. The battery pack according to claim 5, wherein the battery core module (20) comprises a plurality of battery core groups (21) connected in series, a plurality of installation spaces (2) are provided in the base (10), the plurality of battery core groups (21) and the plurality of installation spaces (2) are arranged in a one-to-one correspondence, and the limiting plate (13) is disposed in the installation spaces (2).

7. The battery pack according to claim 6, wherein a plurality of partition structures (14) are provided on the base (10), and the partition structures (14) partition the base (10) into a plurality of installation spaces (2) adapted to the electric core pack (21).

8. The battery pack according to claim 7, wherein a first partition plate (141) and a second partition plate (142) are provided in the base (10), a plurality of the first partition plates (141) are provided at intervals in a length direction of the base (10), and the second partition plate (142) includes a plurality of the second partition plates (142), and the second partition plate (142) is provided between two adjacent first partition plates (141).

9. Battery pack according to claim 7, characterized in that the pressure plate (32) presses the main plate (40) onto the separating structure (14).

10. The battery pack according to claim 5, wherein the cover plate body (31) comprises a top plate (311) and a surrounding edge (312) arranged on the circumferential outer side of the top plate (311), the pressing plate (32) is arranged below the top plate (311), an installation groove (121) is arranged on the upper surface of the base (10), and the surrounding edge (312) is in clamping fit with the installation groove (121).

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