CN215731990U

CN215731990U - Battery with electric core buffering heat conduction function

Info

Publication number: CN215731990U
Application number: CN202121672615.0U
Authority: CN
Inventors: 刘子文; 何巍; 陈星宇
Original assignee: Hubei Eve Power Co Ltd
Current assignee: Hubei Eve Power Co Ltd
Priority date: 2021-07-21
Filing date: 2021-07-21
Publication date: 2022-02-01
Anticipated expiration: 2031-07-21

Abstract

The utility model provides a battery with a battery cell buffer heat conduction function, wherein a buffer insulation structure is additionally arranged in a gap between a shell and a naked battery cell, the buffer insulation structure is made of a softer insulation material with excellent heat conductivity, a gap reserved at the bottom can be filled in the battery assembly, the infiltration of electrolyte in the naked battery cell is improved, the electrochemical performance of the naked battery cell is improved, heat generated by the naked battery cell in the using process is quickly led out from the bottom surface and the side surface, and the service life and the safety of the naked battery cell are improved; simultaneously under adverse circumstances, if vibrate, fall etc. buffering insulation system also can provide certain cushioning effect, reduces the tired risk of droing of naked electric core.

Description

Battery with electric core buffering heat conduction function

Technical Field

The utility model relates to the field of battery structures, in particular to a battery with a battery core buffering and heat conducting function.

Background

The square high power battery on the existing market mostly adopts the opposite side to draw the naked electric core equipment of utmost point ear out and forms, and naked electric core is horizontal in the casing, runs into the bottom casing for the naked electric core of prevention, generally can reserve certain space between naked electric core and bottom casing. However, the high-power battery mostly adopts large current charging and discharging, the temperature of the naked battery core is fast raised, the gap reserved at the bottom is not beneficial to fast heat dissipation of the naked battery core, and certain gap is reserved at the bottom, so that the battery can be in a service life cycle, partial residual electrolyte is wasted, the naked battery core is not well infiltrated, and the performance of the battery is influenced. Meanwhile, due to the existence of the bottom gap, the battery is in a severe environment such as vibration, and when the battery falls, the ultrasonic welding of the lug of the bare cell is fatigue and falls off, so that the safety problem of the battery is caused.

SUMMERY OF THE UTILITY MODEL

The utility model provides a battery with a battery cell buffering heat conduction function, wherein a buffering insulation structure is additionally arranged in a gap reserved for assembling a bare battery cell, so that the infiltration of electrolyte in the bare battery cell is improved; under severe environments, such as vibration, falling and the like, the buffer insulation structure can also provide a certain buffer effect, so that the safety risk of the naked battery cell is reduced; simultaneously, materials such as heat-conducting silica gel can be adopted for the material of the buffering insulation structure, heat generated by the naked battery cell in the using process is rapidly led out from the bottom surface and the side surface, and the electrochemical performance of the battery cell is improved.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:

a battery with a cell buffering and heat conducting function comprises a shell, a buffering insulation structure and a naked cell; the naked electric core is positioned in the shell; the buffering insulation structure is located between the shell and the naked electric core.

Furthermore, positive electrode lugs and negative electrode lugs are arranged on two sides of the naked battery cell.

Further, the bottom of naked electric core of internal surface parcel of buffering insulation construction and the positive electrode ear and the negative pole ear of both sides, the internal surface contact of surface and casing.

Further, the battery with the cell buffering and heat conducting function further comprises a pole assembly; the pole component is respectively connected with the shell and the naked electric core.

Further, the pole assembly comprises a positive pole, a negative pole and a sealing plate; and the positive pole column and the negative pole column are respectively fixed at two ends of the sealing plate.

Further, the positive pole is connected with the positive pole lug; the negative pole post is connected with the negative pole lug.

Further, the sealing plate is fixed on the shell.

Further, the structure of the positive electrode tab and the negative electrode tab comprises a full tab or a cut tab.

Furthermore, the material of the buffer insulation structure comprises heat-conducting silica gel.

Further, the structure of the naked battery cell comprises a winding type or a laminated type

The utility model provides a battery with a battery cell buffer heat conduction function, wherein a buffer insulation structure is additionally arranged in a gap between a shell and a naked battery cell, the buffer insulation structure is made of a softer insulation material with excellent heat conductivity, a gap reserved at the bottom can be filled in the battery assembly, the infiltration of electrolyte in the naked battery cell is improved, the electrochemical performance of the naked battery cell is improved, heat generated by the naked battery cell in the using process is rapidly led out from the bottom surface and the side surface, and the service life and the safety of the naked battery cell are improved; simultaneously under adverse circumstances, if vibrate, fall etc. buffering insulation system also can provide certain cushioning effect, reduces the tired risk of droing of naked electric core.

Drawings

Fig. 1 is an exploded view of a battery with a cell cushioning and heat conducting function.

Description of reference numerals: 1-shell, 2-buffer insulation structure, 3-naked electric core, 31-positive pole ear, 32-negative pole ear, 4-pole assembly, 41-positive pole, 42-negative pole and 43-closing plate.

Detailed Description

The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

The embodiments of the present disclosure are described below with specific examples, and other advantages and effects of the present disclosure will be readily apparent to those skilled in the art from the disclosure in the specification. It is to be understood that the described embodiments are merely illustrative of some, and not restrictive, of the embodiments of the disclosure. The disclosure may be embodied or carried out in various other specific embodiments, and various modifications and changes may be made in the details within the description without departing from the spirit of the disclosure. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

Example one

As shown in fig. 1 is a battery with electric core buffering heat conduction function, the battery includes casing 1, buffering insulation system 2, naked electric core 3 and utmost point post subassembly 4, what casing 1 adopted in this implementation is rectangular shell structure, and casing 1's upper surface is open state for put into buffering insulation system 2, naked electric core 3 and utmost point post 4, the crossing angle limit of each face all around adopts fillet transition design in order to prevent to knock off the corner and damage operating personnel too easily. The naked electric core 3 is wholly cuboid, and can adopt a winding or lamination mode, wherein the winding mode is adopted in the embodiment; the naked electric core 3 can be horizontally and horizontally arranged or vertically arranged in the shell 1, and the horizontal and horizontal arrangement mode is adopted in the implementation; the bare cell 3 is provided with tabs on two opposite sides, namely a positive tab 31 and a negative tab 32; the utmost point ear can be full utmost point ear also can be cutting utmost point ear, and what adopt in this embodiment is full utmost point ear, and utmost point ear is rectangular lamellar for be connected with utmost point post subassembly 4.

The pole assembly 4 comprises a positive pole 41, a negative pole 42 and a sealing plate 43, wherein the sealing plate 43 is a strip-shaped insulating part, and the width and the length of the strip-shaped insulating part are matched with the opening size of the upper surface of the shell 1 and used for being hermetically connected with the opening side of the shell 1 to play a role in packaging the battery. The positive pole post 41 and the negative pole post 42 are respectively fixed at two ends of the closing plate 43; the lower end of the positive pole post 41 is connected with the positive pole lug 31, and the upper end of the positive pole post is exposed out of the outer surface of the sealing plate 43; the lower end of the negative pole post 42 is connected with the negative pole lug 32, and the upper end is exposed out of the outer surface of the sealing plate 43; the connection modes of the positive pole post 41 and the positive pole tab 31 and the connection modes of the negative pole post 42 and the negative pole tab 32 comprise ultrasonic welding; the upper ends of the positive post 41 and the negative post 42 may be led out from two opposite side surfaces of the case 1, or may be led out from the same surface, and in this embodiment, the upper ends are led out from the same upper surface.

Buffering insulation system 2 is located between casing 1 and naked electric core 3, adopts the U-shaped structure that is suitable for 1 inside dimension of casing, and bottom length suits with 1 inside length of casing, and the width suits with 1 inside width of casing, and highly corresponding with naked electric core 3 for fill the space between naked electric core 3 and the casing 1, improve naked electric core 3 and soak in electrolyte, in order to improve the electrochemical performance of electric core. The buffer insulation structure 2 is in direct contact with the bottom of the shell 1, and a softer material with excellent heat conductivity is selected, and heat-conducting silica gel is adopted in the implementation and used for rapidly guiding heat generated by the naked electric core 3 in the using process out of the bottom surface and the side surface; buffering insulation system 2 wraps up naked electric core 3 from the bottom simultaneously, and positive ear 31 and negative pole ear 32 are lived to the side parcel, make the battery when being in the vibration and falling the adverse circumstances such as, buffering insulation system 2 provides certain cushioning effect for naked electric core 3, prevents to appear dangerous phenomenon such as tired coming off. The thickness range of the buffering insulation structure 2 comprises 0.5-3 mm, and the thickness of the buffering insulation structure is preferably 1 mm.

In the description of the present invention, it is to be understood that the terms "intermediate", "length", "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer", "radial", "circumferential", and the like, indicate orientations and positional relationships that are based on the orientations and positional relationships shown in the drawings, are used for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the first feature may be "on" the second feature in direct contact with the second feature, or the first and second features may be in indirect contact via an intermediate. "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The above description is for the purpose of illustrating embodiments of the utility model and is not intended to limit the utility model, and it will be apparent to those skilled in the art that any modification, equivalent replacement, or improvement made without departing from the spirit and principle of the utility model shall fall within the protection scope of the utility model.

Claims

1. A battery with a battery cell buffering and heat conducting function is characterized by comprising a shell (1), a buffering insulation structure (2) and a naked battery cell (3); the naked battery cell (3) is positioned in the shell (1); buffering insulation system (2) are located between casing (1) and naked electric core (3).

2. The battery with the cell buffering and heat conducting functions as claimed in claim 1, wherein a positive tab (31) and a negative tab (32) are arranged on two sides of the bare cell (3).

3. The battery with the cell buffer heat conduction function according to claim 2, wherein the inner surface of the buffer insulation structure (2) wraps the positive electrode tab (31) and the negative electrode tab (32) at the bottom and both sides of the bare cell (3), and the outer surface of the buffer insulation structure (2) is in contact with the inner surface of the casing (1).

4. The battery with the cell buffering and heat conducting functions as claimed in claim 2, further comprising a pole assembly (4); the pole assembly (4) is connected with the shell (1) and the naked electric core (3) respectively.

5. The battery with the cell buffering and heat conducting functions as claimed in claim 4, wherein the pole assembly (4) comprises a positive pole (41), a negative pole (42) and a sealing plate (43); the positive pole column (41) and the negative pole column (42) are respectively fixed at two ends of the sealing plate (43).

6. The battery with the cell buffering and heat conducting functions as claimed in claim 5, wherein the positive pole column (41) is connected with the positive pole tab (31); the negative pole posts (42) are connected with the negative pole ears (32).

7. The battery with the cell buffering and heat conducting functions as claimed in claim 5, wherein the sealing plate (43) is fixed on the housing (1).

8. The battery with the cell buffering and heat conducting functions as claimed in any one of claims 2 to 7, wherein the structure of the positive electrode tab (31) and the negative electrode tab (32) comprises a full tab or a cut tab.

9. The battery with the battery core buffering and heat conducting function according to any one of claims 1 to 7, wherein the buffering insulating structure (2) is made of heat-conducting silica gel.

10. The battery with cell cushioning and heat conducting functions as recited in any one of claims 1 to 7, characterized in that the structure of the bare cell (3) comprises a winding type or a laminated type.