CN217719753U

CN217719753U - Battery with a battery cell

Info

Publication number: CN217719753U
Application number: CN202221568384.3U
Authority: CN
Inventors: 任瑞丽; 刘阳
Original assignee: Shanghai Lanjun New Energy Technology Co Ltd
Current assignee: Shanghai Lanjun New Energy Technology Co Ltd
Priority date: 2022-06-22
Filing date: 2022-06-22
Publication date: 2022-11-01
Anticipated expiration: 2032-06-22

Abstract

The utility model provides a battery, include: a pole core; the heat pipe is arranged on the pole core and used for dissipating heat; the heat pipe is of a plate-shaped structure, the heat pipe is bonded with the pole core through the heat conducting glue, the heat pipe is bonded on the pole core inside the battery through the heat conducting glue, the contact area between the plate-shaped heat pipe and the pole core is larger, the heat conducting area is increased, meanwhile, the heat conducting efficiency between the pole core and the heat pipe is further improved through the heat conducting glue, the temperature inside the battery is favorably reduced, and the performance and the safety of the battery are improved.

Description

Battery with a battery cell

Technical Field

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

Background

Compared with the traditional fuel oil automobile, the electric automobile has no waste gas emission and no environmental pollution in the driving process; the conversion efficiency of the motor is higher, and energy is saved; the device has no engine, gearbox, exhaust system and the like, and has simple structure and convenient manufacture; less moving parts, low noise and the like. Under the large background of environmental protection, energy conservation and emission reduction, the market penetration rate is increased year by year in recent years, and reaches 10% in 2022, and the attention of governments, complete factories and consumers is paid. However, the charging time of the electric vehicle is long, which has become a major problem hindering the development of the electric vehicle, so the rapid charging technology has become an important development direction for battery factories and whole factories.

In the process of quick charging, the current is large, a large amount of heat can be generated, if the heat can not be effectively dissipated, the temperature of the battery can be increased, the performance of the battery can be attenuated, and even the safety problem can be caused. At present, in an electric automobile, air cooling or water cooling is mainly used for radiating the battery, and the temperature of the battery is reduced by taking away the heat on the surface of the battery. The battery in the prior art can not lead out internal heat efficiently.

Therefore, there is a need to develop a new battery to improve some of the above problems in the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a battery can derive the inside heat of battery high efficiency.

In order to achieve the above object, the present invention provides a battery, including: a pole piece; the heat pipe is arranged on the pole core and used for dissipating heat; the heat pipe is of a plate-shaped structure, and the heat pipe is bonded with the pole core through heat conducting glue.

The utility model provides a beneficial effect of battery lies in: the heat pipe is bonded on the pole core in the battery through the heat conducting glue, the contact area between the plate-shaped heat pipe and the pole core is larger, the heat conducting area is increased, meanwhile, the heat conducting efficiency between the pole core and the heat pipe is further improved through the heat conducting glue, the internal temperature of the battery is favorably reduced, and the performance and the safety of the battery are improved.

Optionally, a plurality of the pole cores are arranged along a first direction, and the heat pipe is disposed between two adjacent pole cores at the center in the first direction. The beneficial effects are that: one heat pipe is arranged between two adjacent pole cores at the middlemost position, the uniformity of heat dissipation of the two sides of the battery is uniform, and high heat dissipation efficiency can be achieved with low cost by only one heat pipe.

Optionally, the surface of the heat pipe coincides with the surface of the pole piece. The beneficial effects are that: the heat exchange area between the heat pipe and the pole core is increased.

Optionally, the end face of the heat pipe extends to the housing and coincides with the surface of the housing. The beneficial effects are that: the battery shell is connected with an external heat dissipation system, the heat pipe extends to the shell, the surfaces of the heat pipe and the shell are overlapped, and the heat inside the battery is guided out to the external heat dissipation system through the shell.

Optionally, the heat pipe is T-shaped, and the heat pipe includes a horizontal portion and a vertical portion, a surface of the horizontal portion coincides with a surface of the outer casing, and a surface of the vertical portion coincides with a surface of the pole piece. The beneficial effects are that: the T-shaped heat pipe is provided with the horizontal part, so that the heat exchange area between the heat pipe and the shell can be increased, and the heat dissipation efficiency is improved.

Optionally, the pole piece includes a diaphragm, and the heat pipe is attached to the diaphragm.

Optionally, the surface of the heat pipe is provided with an insulating coating, and the material of the coating has thermal conductivity. The beneficial effects are that: the heat pipe is made of a metal material and has good thermal conductivity, and the insulating coating can reduce the risk of short circuit caused by the heat pipe made of the metal material and improve the safety of the battery.

Optionally, the material of the insulating coating includes any one of heat-conducting silicone grease, heat-conducting silicone, heat-conducting phase-change material, heat-conducting rubber, and heat-conducting ceramic material.

Optionally, the width W of the pole piece₁Thickness T of said pole piece₁The width W of the heat pipe is less than or equal to W₁-T₁。

Drawings

Fig. 1 is a schematic view of the internal structure of a battery according to a first embodiment of the present invention;

fig. 2 is a schematic view of the internal structure of the battery according to the second embodiment of the present invention;

FIG. 3 is a schematic structural view of the bottom bracket shown in FIG. 2;

fig. 4 is a schematic diagram of the internal structure of a battery according to a third embodiment of the present invention;

fig. 5 is a schematic diagram of an internal structure of a battery according to a fourth embodiment of the present invention.

Reference numbers in the figures: 1. a heat pipe; 2. a pole piece; 3. a bottom pallet; 4. a housing; 101. a vertical portion; 102. a horizontal portion; 301. and (4) square holes.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. As used herein, the word "comprising" and similar words are intended to mean that the element or item preceding the word comprises the element or item listed after the word and its equivalent, but not the exclusion of other elements or items.

For solving the problem that prior art exists, the embodiment of the utility model provides a battery.

Fig. 1 is a schematic view of the internal structure of the battery according to the first embodiment of the present invention.

In some embodiments of the present invention, referring to fig. 1, the battery includes: the heat pipe 1 is arranged on the pole core 2 and used for heat dissipation, the heat pipe 1 is of a plate-shaped structure, and the heat pipe 1 is bonded with the pole core 2 through heat conducting glue.

In some embodiments of the present invention, referring to fig. 1, the number of the pole cores 2 is two, and the heat pipe 1 is disposed between the adjacent two pole cores 2.

In some embodiments of the present invention, the number of the pole cores 2 is four, one the heat pipe 1 is disposed between the two adjacent pole cores 2.

In some embodiments of the present invention, the number of the pole cores 2 is four, three the heat pipes 1 are respectively set in four the pole cores 2 are adjacent to each other by two arbitrary poles between the pole cores 2.

In some embodiments of the present invention, the surface of the heat pipe 1 coincides with the surface of the pole core 2, that is, the heat pipe 1 coincides with the adjacent surface between the pole cores 2.

The utility model discloses in some embodiments, heat pipe 1 with 2 shapes of utmost point core are the same, are platelike structure, heat pipe 1 with overlap each other between the surface that length and width formed on the utmost point core 2, overlap each other between the surface that the area is the biggest promptly.

Fig. 2 is a schematic diagram of an internal structure of a battery according to a second embodiment of the present invention; fig. 3 is a schematic structural view of the bottom bracket shown in fig. 2.

In some embodiments, refer to fig. 2 and 3, the battery still includes bottom plate 3, square hole 301 has been seted up on bottom plate 3, heat pipe 1 passes square hole 301 on the bottom plate 3 extends to shell 4, and with the coincidence of the surface of shell 4, the opposite side of shell 4 is provided with outside cooling system's heating panel, and this outside cooling system can be forced air cooling heat dissipation or water-cooling heat dissipation, the inside heat of battery is followed heat pipe 1 transmits to shell 4, and passes through shell 4 conducts to outside cooling system's heating panel.

Fig. 4 is a schematic diagram of an internal structure of a battery according to a third embodiment of the present invention.

In some embodiments, referring to fig. 4, the heat pipe 1 has a T-shape, the heat pipe 1 includes a horizontal portion 102 and a vertical portion 101, a surface of the horizontal portion 102 coincides with a surface of the housing 4, and a surface of the vertical portion 101 coincides with a surface of the pole piece 2.

In some embodiments of the present invention, referring to fig. 5, the pole piece 2 includes a diaphragm, the heat pipe 1 is disposed inside the pole piece 2 and attached to the diaphragm.

The utility model discloses in some embodiments, heat pipe 1 is made with metal material and can has good heat conductivity, metal material includes but not limited to copper, aluminium, nickel, stainless steel etc. insulating coating can reduce metal material heat pipe 1 causes the risk of short circuit, improves the security of battery, insulating coating set up in heat pipe 1 surface, the material of coating has the heat conductivity.

In some embodiments of the present invention, the material of the insulating coating includes any one of heat-conducting silicone grease, heat-conducting silicone, heat-conducting phase-change material, heat-conducting rubber, and heat-conducting ceramic material.

In some embodiments of the present invention, the width W of the pole piece₁Thickness T of said pole piece₁The width W of the heat pipe is determined by the following formula, wherein W is less than or equal to W₁-T₁。

The embodiment of the utility model provides a battery is provided respectively to embodiment 1-5, and the battery in embodiment 1-5 is square shell battery, and the size is 33mm 220mm 105mm, and capacity is 115Ah, and electric core inside has 2 utmost point cores. The charging process is that after the constant current charging with the specified current is carried out to the cut-off voltage (4.3V), the constant voltage is carried out to 0.05C, and the ambient temperature is 25 ℃; the batteries in examples 1 to 5 were subjected to temperature rise tests under the condition that the parameters of the heat pipe height, the heat pipe width, the heat pipe material, the number of heat pipes, the shape of the heat pipes, and the like were different, the specific parameters are shown in table 1, and the test results are shown in table 2.

TABLE 1

The cells of examples 1-6 were individually subjected to a temperature rise test, the test results of which are shown in table 2.

TABLE 2

Although the embodiments of the present invention have been described in detail hereinabove, it is apparent to those skilled in the art that various modifications and variations can be made to these embodiments. However, it is to be understood that such modifications and variations fall within the scope and spirit of the invention as set forth in the following claims. Moreover, the invention as described herein is capable of other embodiments and of being practiced or of being carried out in various ways.

Claims

1. A battery, comprising:

a pole piece;

the heat pipe is arranged on the pole core and used for dissipating heat;

the heat pipe is of a plate-shaped structure, and the heat pipe is bonded with the pole core through heat conducting glue.

2. The battery of claim 1, wherein the number of pole cores is at least two, and the heat pipe is disposed between two adjacent pole cores.

3. The battery according to claim 2, wherein a plurality of the pole pieces are arranged in a first direction, and the heat pipe is disposed between two adjacent pole pieces at a center in the first direction.

4. The battery of claim 3, wherein a surface of the heat pipe coincides with a surface of the pole piece.

5. The battery of claim 2, further comprising a housing, wherein the end face of the heat pipe extends to the housing and coincides with a surface of the housing.

6. The battery of claim 5, wherein the heat pipe is T-shaped, the heat pipe comprising a horizontal portion and a vertical portion, a surface of the horizontal portion coinciding with a surface of the housing, and a surface of the vertical portion coinciding with a surface of the pole piece.

7. The battery of claim 1, wherein the pole piece includes a membrane, the heat pipe being bonded to the membrane.

8. The battery of claim 1, wherein the heat pipe surface is provided with an insulating coating, the material of the coating being thermally conductive.

9. The battery of claim 8, wherein the material of the insulating coating comprises any one of heat-conducting silicone grease, heat-conducting silicone gel, heat-conducting phase-change material, heat-conducting rubber and heat-conducting ceramic material.

10. The battery of claim 1, wherein the pole piece has a width W₁Thickness T of said pole piece₁The width W of the heat pipe is less than or equal to W₁-T₁。