CN217589275U

CN217589275U - Battery cell locking device and battery cell module

Info

Publication number: CN217589275U
Application number: CN202123340624.2U
Authority: CN
Inventors: 吕游; 韦银涛; 宁兴广
Original assignee: Hubei Eve Power Co Ltd
Current assignee: Hubei Eve Power Co Ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-10-14
Anticipated expiration: 2031-12-28

Abstract

The utility model relates to the technical field of batteries, a electricity core locking device is disclosed. The battery cell locking device comprises two end plates, a connecting piece and an elastic connecting mechanism, wherein the two end plates are arranged oppositely, and a plurality of battery cells are accommodated between the two end plates; each end plate is provided with a connecting piece; the elastic connecting mechanism is elastically connected with the connecting pieces on the two end plates, so that the distance between the two end plates can be adaptively adjusted according to the expansion conditions of the plurality of battery cells. The utility model provides an electricity core locking device, simple structure has reduced manufacturing cost, and this electricity core locking device can be at certain size within range automatically regulated size to the size change of adaptation electricity core charge-discharge in-process has improved the life of electric core.

Description

Battery cell locking device and battery cell module

Technical Field

The utility model relates to a battery technology field, concretely relates to electric core locking device and electric core module.

Background

Along with the development of battery technology, the application field of electric core module is more and more wide, and electric core is as the important component part of electric core module, when in groups, uses locking device to lock fixedly to electric core usually. However, in the cycle process of charging and discharging the battery cell, the battery cell may expand to different degrees, which may cause the thickness of the battery cell to change, and further extrude the end plate of the locking device, and generate pressure on the battery cell, which may affect the service life of the battery cell. Therefore, to avoid the damage of the cell, an elastic member is usually added to the locking device to buffer and balance the pressure of the cell.

In the prior art, a battery cell is usually arranged in a module box, a sufficient gap is reserved between the battery cell and the module box, elastic parts are arranged at two ends of the battery cell, and the elastic parts can be compressed after the battery cell is charged and expanded to fully release expansion force in time; or, set up the slip guide structure between two end plates to the distance between two end plates of convenient to adjust when electric core charging expansion, electric core promotes one side end plate slip and compression elastic component, in order to release the expansive force, this kind sets up the structure more complicacy, and manufacturing cost is higher, and great to the area of sheltering from of electric core, also does not benefit to the heat dissipation of electric core.

Therefore, it is desirable to provide a cell locking device and a cell module to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electricity core locking device and electricity core module can the automatically regulated size in order to adapt to the electric core inflation and the dimensional change that leads to, has improved the life of electric core, and simple structure.

To achieve the purpose, the utility model adopts the following technical proposal to realize:

a cell locking device, comprising:

the two end plates are oppositely arranged, and a plurality of battery cells are accommodated between the two end plates;

the connecting piece is arranged on each end plate;

and the elastic connecting mechanism is elastically connected with the connecting pieces on the two end plates, so that the distance between the two end plates can be adaptively adjusted according to the expansion conditions of the plurality of battery cells.

Optionally, the resilient connecting means is removably connected to the connecting member.

Optionally, the resilient connection comprises:

the bolts penetrate through the two connecting pieces which are oppositely arranged on the two end plates;

a nut screwed to one end of the bolt;

one end of the elastic component is connected with the nut in an abutting mode, and the other end of the elastic component is connected with the connecting piece in an abutting mode.

Optionally, the elastic component is sleeved outside the bolt.

Optionally, the elastic assembly comprises:

the elastic sleeve is sleeved outside the bolt, one end of the elastic sleeve is abutted or connected with the nut, and the other end of the elastic sleeve is abutted or connected with the connecting piece;

and the spring is sleeved outside the elastic sleeve, one end of the spring is abutted or connected with the nut, and the other end of the spring is abutted or connected with the connecting piece.

Optionally, the connector comprises:

the U-shaped plate is sleeved outside the end plate and connected with the end plate;

two lugs, two lugs set up perpendicularly respectively in two free ends of U template, the lug is used for being connected with elastic connection mechanism.

Optionally, the end plate is provided with a limiting groove, and the U-shaped plate is arranged in the limiting groove to limit the position of the connecting piece.

Optionally, the end plate is provided with lightening holes.

Optionally, each end plate is connected with at least two connecting pieces in the vertical direction, and the two connecting pieces oppositely arranged on the two end plates are connected through an elastic connecting mechanism.

The utility model provides an electricity core module, includes a plurality of electric cores that set up side by side, still includes the electric core locking device of above-mentioned any one, and electric core locking device is used for fixing a plurality of electric cores.

The utility model has the advantages that:

the utility model provides an electric core locking device, which is used for fixedly supporting an electric core, when the electric core is charged and expanded, the electric core is butted against end plates at two ends, and under the elastic connection action of an elastic connection mechanism, the distance between the two end plates can be adaptively adjusted so as to meet the size change of the expanded electric core; after the battery cell discharges, the size of the battery cell is reduced, and the two end plates realize resetting under the action of restoring force of the elastic connecting mechanism. The battery cell locking device is simple in integral structure, reduces manufacturing cost, and can automatically adjust the size within a certain size range to adapt to size change of a battery cell in a charging and discharging process, and the service life of the battery cell is prolonged.

The utility model provides an electricity core module through using above-mentioned electric core locking device, makes things convenient for the installation of electricity core module more, has reduced the manufacturing cost of electricity core module, and is favorable to the heat dissipation of electricity core module, has prolonged the life of electricity core module.

Drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly and easily, the drawings required to be used in the embodiments or the prior art descriptions will be briefly introduced below, and the drawings described below are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a diagram of a matching relationship between a battery cell locking device and a battery cell provided in an embodiment of the present invention;

fig. 2 is an exploded view of a cell locking device and a cell provided in an embodiment of the present invention;

fig. 3 is an exploded view of a cell locking device provided in an embodiment of the present invention.

In the figure:

1. an end plate; 11. a limiting groove; 12. lightening holes;

2. a connecting member; 21. a U-shaped plate; 22. a lug;

3. an elastic connection mechanism; 31. a bolt; 32. a nut; 33. an elastic component; 331. an elastic sleeve; 332. a spring; 34. a gasket;

4. and (5) battery cores.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

Fig. 1 is a diagram illustrating a matching relationship between a cell locking device and a cell provided in this embodiment; fig. 2 shows an exploded view of the cell locking device and the cell provided in this embodiment; fig. 3 shows an explosion diagram of the cell locking device provided in this embodiment. Referring to fig. 1 to fig. 3, the present embodiment provides a battery cell module, which includes a battery cell locking device and a plurality of battery cells 4 arranged side by side, where the battery cell locking device is configured to fix the plurality of battery cells 4. However, in the charging and discharging cycle process of the battery cell 4, the expansion phenomenon of different degrees may occur, which causes the thickness dimension of the battery cell 4 to change, and further squeezes the battery cell locking device, and generates squeezing force on the battery cell 4, which affects the service life of the battery cell 4.

In order to solve the above problem, as shown in fig. 1, the cell locking device provided in this embodiment specifically includes two end plates 1, a connecting member 2, and an elastic connecting mechanism 3, where the two end plates 1 are disposed opposite to each other, and a plurality of cells 4 are accommodated between the two end plates 1; each end plate 1 is provided with a connecting piece 2; the elastic connecting mechanism 3 is elastically connected with the connecting pieces 2 on the two end plates 1, so that the distance between the two end plates 1 can be adaptively adjusted according to the expansion conditions of the plurality of battery cells 4.

The utility model provides an electric core locking device, which is used for fixedly supporting an electric core 4, when the electric core 4 is charged and expanded, the size of the electric core 4 is increased and is butted on the end plates 1 at the two ends of the electric core 4, and under the elastic connection action of the elastic connection mechanism 3, the distance between the two end plates 1 can be adaptively adjusted to meet the size change of the electric core 4 after being expanded; after the battery cell 4 discharges, the size of the battery cell 4 is reduced, and the two end plates 1 reset under the action of the elastic restoring force of the elastic connecting mechanism 3.

The battery cell locking device is simple in integral structure, reduces manufacturing cost, and can automatically adjust the size within a certain size range to adapt to size change of the battery cell 4 in the charging and discharging process, and the service life of the battery cell 4 is prolonged.

Preferably, the elastic connection means 3 are detachably connected to the connection member 2. The connection mode is more convenient for the disassembly and the assembly of the elastic connection mechanism 3 and the connecting piece 2, can reduce the time for disassembly and assembly, and improves the disassembly and assembly efficiency.

Specifically, as shown in fig. 2, the elastic connection mechanism 3 includes a bolt 31, a nut 32 and an elastic component 33, the bolt 31 penetrates through two connecting pieces 2 oppositely arranged on two end plates 1; a nut 32 is screwed to one end of the bolt 31; one end of the elastic member 33 abuts or is connected to the nut 32, and the other end abuts or is connected to the connector 2. The connecting structure has the advantages that the bolt 31 and the nut 32 are used for connection, the structure is simple, the connection is reliable, the dismounting and the mounting are convenient, the stable connection between the two connecting pieces 2 oppositely arranged on the two end plates 1 can be realized, when the elastic component 33 needs to be replaced, a user can dismount the elastic component 33 from the bolt 31 only through simple screwing action, and the convenience and the rapidness are realized; through the elastic connection effect of the elastic assembly 33, the distance between the two end plates 1 can be adaptively adjusted to meet the size change of the battery cell 4 after expansion. In other embodiments, the bolt 31 may be replaced by other structures such as a pin, which can achieve the above-mentioned effects. Of course, in other embodiments, the two connecting members 2 may be elastically connected only by the elastic component 33, and both ends of the elastic component 33 are respectively connected with the two connecting members 2.

Further, as shown in fig. 3, a spacer 34 is provided between the nut 32 and the elastic member 33. Through setting up gasket 34, the one end of elastic component 33 can be directly supported on gasket 34, increased with the area of contact between elastic component 33, reduced the pressure that nut 32 surface bore, all played certain guard action to nut 32 and elastic component 33.

Optionally, the elastic element 33 is sleeved outside the bolt 31. Specifically, the bolt 31 is provided with an external thread, the nut 32 is provided with a threaded hole, the bolt 31 is screwed into the threaded hole of the nut 32 through the external thread, and after the elastic member 33 is sleeved on the bolt 31, one end of the elastic member abuts against or is connected with the nut 32, and the other end of the elastic member abuts against or is connected with the connecting piece 2. The bolt 31 can play a certain guiding and limiting role for the elastic component 33 to ensure that the elastic component 33 only stretches along the axis direction of the bolt, and meanwhile, the whole elastic connection mechanism 3 is compact in structure and saves a certain space. Of course, in other embodiments, the elastic assembly 33 may not be nested with the bolt 31, for example, the elastic assembly 33 may be arranged side by side with the bolt 31, as long as it is ensured that one end of the elastic assembly 33 abuts or is connected with the connecting member 2 and the other end abuts or is connected with the gasket 34.

Further, the elastic element 33 may include a plurality of elastic members, and the plurality of elastic members are all sleeved outside the bolt 31. As shown in fig. 3, in the embodiment, the elastic element 33 specifically includes an elastic sleeve 331 and a spring 332, the elastic sleeve 331 is sleeved outside the bolt 31, the nut 32 is screwed at one end of the bolt 31, one end of the elastic sleeve 331 abuts against or is connected to the nut 32, and the other end abuts against or is connected to the connecting member 2; the spring 332 is sleeved outside the elastic sleeve 331, one end of the spring 332 is abutted or connected with the nut 32, and the other end is abutted or connected with the connecting piece 2. The elastic sleeve 331 has compressibility, and the elastic restoring force of the spring 332 is large, and when the end plate 1 and the connecting member 2 are reset, the spring 332 can provide large elastic restoring force, and the material is convenient to obtain and the manufacturing cost is low. The elastic sleeve 331 may be made of rubber or silica gel, or other elastic materials. In other embodiments, only the elastic sleeve 331 or only the spring 332 may be provided between the nut 32 and the connecting member 2; alternatively, the elastic connection means 3 may also be a hydraulic lever, which also achieves the above-mentioned effect.

Specifically, the bolt 31 includes a head and a screw rod connected to each other, the two connecting members 2 are respectively provided with a mounting hole, after the screw rod sequentially penetrates through the two mounting holes, the end surface of the head abuts against or is connected to one of the connecting members 2, wherein the outer diameter of the head is larger than the diameter of the mounting hole, so that the head can abut against or be connected to the connecting member 2; next, the outer diameter of the bolt 32 is larger than the outer diameter of the spring 332, and after the nut 32 is screwed to the bolt 31, one end of the spring 332 can abut against or be connected to the end face of the bolt 32.

Further, as shown in fig. 3, the connecting member 2 includes a U-shaped plate 21 and two lugs 22, the U-shaped plate 21 is sleeved outside the end plate 1 and connected with the end plate 1; two lugs 22 are respectively vertically arranged at two free ends of the U-shaped plate 21, and the lugs 22 are used for being connected with the elastic connecting mechanism 3. This kind of setting up simple structure, easy dismounting, when electric core 4 was in groups, only needed to locate corresponding end plate 1 with two U type board 21 covers outside, the lug 22 of two U type boards 21 corresponds through elastic connection mechanism 3 and connects, can realize electric core 4 in groups. In this embodiment, the connecting piece 2 is preferably a steel belt shaped like a Chinese character 'ji', and has a simple structure, a long service life, a small shielding area for the battery cell 4, and a heat dissipation effect of the battery cell 4.

Preferably, as shown in fig. 3, the end plate 1 is provided with a limiting groove 11, and a u-shaped plate 21 is disposed in the limiting groove 11 to limit the position of the connecting member 2. Through setting up spacing groove 11, can play certain limiting displacement to U template 21, guarantee in the connection process, U template 21 can not take place the obscission, has improved the holistic stability of the device.

Preferably, as shown in fig. 3, the end plate 1 is provided with lightening holes 12. Through setting up lightening hole 12, reduced electric core locking device's whole weight, be favorable to realizing the lightweight of device. In the present embodiment, the lightening holes 12 are square holes, and two, three or more lightening holes 12 may be provided in each end plate 1. Of course, in other embodiments, the specific shape of the lightening holes 12 may also be circular or other shapes.

Preferably, each end plate 1 is connected with at least two connecting pieces 2 along the vertical direction, and the two connecting pieces 2 oppositely arranged on the two end plates 1 are connected through an elastic connecting mechanism 3. A plurality of connecting pieces 2 cooperate jointly to tie up locking together a plurality of electric cores 4 to form stable in structure's electric core module, simultaneously, under a plurality of elastic connection mechanism 3's elastic connection effect, can guarantee the stability of electric core locking device in the size adjustment in-process. In this embodiment, be connected with two connecting pieces 2 on every end plate 1, when guaranteeing electric core module stable in structure, can also save manufacturing cost to reduce operating personnel dismouting connecting piece 2 and elastic connection mechanism 3's work load.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A battery cell locking device, comprising:

the battery cell comprises two end plates (1), wherein the two end plates (1) are arranged oppositely, and a plurality of battery cells (4) are accommodated between the two end plates (1);

the connecting piece (2) is arranged on each end plate (1);

the elastic connecting mechanism (3) is elastically connected with the connecting pieces (2) on the two end plates (1) so that the distance between the two end plates (1) can be adaptively adjusted according to the expansion conditions of the plurality of battery cells (4).

2. The cell locking device according to claim 1, characterized in that the elastic connection means (3) is detachably connected to the connecting piece (2).

3. The cell locking device according to claim 1, characterized in that the elastic connection means (3) comprise:

the bolts (31) penetrate through the two connecting pieces (2) which are oppositely arranged on the two end plates (1);

a nut (32) screwed to one end of the bolt (31);

and one end of the elastic component (33) is abutted or connected with the nut (32), and the other end of the elastic component is abutted or connected with the connecting piece (2).

4. The cell locking device according to claim 3, characterized in that the elastic component (33) is sleeved outside the bolt (31).

5. The cell locking device according to claim 3, characterized in that the elastic assembly (33) comprises:

the elastic sleeve (331) is sleeved outside the bolt (31), one end of the elastic sleeve (331) is abutted or connected with the nut (32), and the other end of the elastic sleeve (331) is abutted or connected with the connecting piece (2);

and the spring (332) is sleeved outside the elastic sleeve (331), one end of the spring (332) is abutted or connected with the nut (32), and the other end of the spring (332) is abutted or connected with the connecting piece (2).

6. The cell locking device according to any of claims 1 to 5, characterized in that the connecting piece (2) comprises:

the U-shaped plate (21) is sleeved outside the end plate (1) and is connected with the end plate (1);

the two lugs (22) are respectively and vertically arranged at two free ends of the U-shaped plate (21), and the lugs (22) are used for being connected with the elastic connecting mechanism (3).

7. The cell locking device according to claim 6, wherein a limiting groove (11) is formed in the end plate (1), and the U-shaped plate (21) is disposed in the limiting groove (11) to limit the position of the connecting member (2).

8. The cell locking device according to any of claims 1 to 5, characterized in that the end plate (1) is provided with lightening holes (12).

9. The cell locking device according to any of claims 1 to 5, wherein at least two connecting pieces (2) are connected to each end plate (1) along the vertical direction, and the two connecting pieces (2) oppositely arranged on the two end plates (1) are connected through the elastic connecting mechanism (3).

10. A battery cell module comprising a plurality of battery cells (4) arranged side by side, and further comprising the battery cell locking device of any one of claims 1 to 9, wherein the battery cell locking device is configured to fix a plurality of battery cells (4).