CN216850080U

CN216850080U - Ternary lithium ion battery with good heat dissipation performance

Info

Publication number: CN216850080U
Application number: CN202220355404.2U
Authority: CN
Inventors: 李锐辉
Original assignee: Zhangzhou Huafu New Energy Technology Co ltd
Current assignee: Zhangzhou Huafu New Energy Technology Co ltd
Priority date: 2022-02-22
Filing date: 2022-02-22
Publication date: 2022-06-28
Anticipated expiration: 2032-02-22

Abstract

The utility model discloses a ternary lithium ion battery that heat dispersion is good, including battery body and heat dissipation aluminum hull, battery body sets up in the heat dissipation aluminum hull, and the inner wall welded connection of heat dissipation aluminum hull has the fixed plate, set up the cooling bath that is equidistant distribution in the heat dissipation aluminum hull wall body, and the heat dissipation aluminum hull underrun connection gasket with be connected the shell and seal the bonding, the both sides welded connection of fixed plate has hot bimetallic strip, connect gasket both sides wall body and set up the intercommunication groove that is equidistant distribution, connect the internal hole groove of seting up and being equidistant distribution of shell both sides wall, the intracavity that forms between sealing rubber piece and the connection shell is injected with the coolant liquid. This ternary lithium ion battery that heat dispersion is good is provided with the connection shell, and the inside coolant liquid that has poured into of connection shell, coolant liquid cooperation heat dissipation aluminum hull can be quick derive the heat, improve the radiating effect, have guaranteed the work efficiency of battery, have guaranteed the security simultaneously.

Description

Ternary lithium ion battery with good heat dissipation performance

Technical Field

The utility model relates to a battery technology field specifically is a ternary lithium ion battery that heat dispersion is good.

Background

After the ternary lithium ion battery operated for a long time, inside temperature can rise fast, in order to guarantee the battery performance and stop the potential safety hazard, need dispel the heat to the battery, present radiating mode only has the aluminum hull on the battery, realize the heat dissipation to the battery through the characteristic of aluminium, but this radiating mode is comparatively single, when battery calorific capacity is too big, the aluminum hull can not be quick derive the heat, the radiating effect is relatively poor, the practicality is not strong, in view of the defect that exists among the above prior art, it is necessary to improve it further, make it more possess the practicality, just can accord with the in-service use condition.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a ternary lithium ion battery that heat dispersion is good to the radiating mode who proposes in solving above-mentioned background is comparatively single, when battery calorific capacity was too big, the aluminum hull can not be quick derive the heat, the relatively poor problem of radiating effect.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a ternary lithium ion battery that heat dispersion is good, includes battery body and heat dissipation aluminum hull, battery body sets up in the heat dissipation aluminum hull, and the inner wall welded connection of heat dissipation aluminum hull has the fixed plate, set up the cooling bath that is equidistant distribution in the heat dissipation aluminum hull wall body, and heat dissipation aluminum hull underrun joint gasket and the sealed bonding of joint shell, the both sides welded connection of fixed plate has hot bimetallic strip, the intercommunication groove that is equidistant distribution is seted up to joint gasket both sides wall body, the internal hole groove that is equidistant distribution of having seted up of joint shell both sides wall, and the four sides of joint shell inner wall and sealing rubber piece are sealed to be bonded, the intracavity that forms between sealing rubber piece and the joint shell is injected with the coolant liquid.

Furthermore, the battery body is attached to the inner side wall of the heat dissipation aluminum shell, and the bottom surface of the battery body is attached to the fixing plate.

Furthermore, the top surface of the heat dissipation aluminum shell and the bottom surface of the connecting shell are both provided with grooves which are distributed at equal intervals, and the cross section of each groove is shaped like U.

Furthermore, the thermal bimetallic strips are distributed at equal intervals on two sides of the fixing plate, and one side of the thermal bimetallic strip with a small expansion coefficient faces the sealing rubber sheet.

Furthermore, the cooling groove is in an inverted U shape, the bottom ends of the two sides of the cooling groove are communicated with the bottom surface of the radiating aluminum shell, and the bottom ends of the two sides of the cooling groove are aligned with the communication groove and are coaxial.

Furthermore, the top end of the hole groove is communicated with the top surface of the connecting shell, the top end of the hole groove is aligned with the communicating groove and coaxial with the axis, and the bottom end of the hole groove is communicated with the inner side wall of the connecting shell.

Furthermore, the top surface of the connecting shell is open and is made of aluminum, the bottom surface of the heat dissipation aluminum shell is open, the connecting gasket is rectangular frame and is made of rubber, and the connecting gasket, the connecting shell and the heat dissipation aluminum shell are combined into a hollow square structure.

Compared with the prior art, the beneficial effects of the utility model are that: the ternary lithium ion battery with good heat dissipation performance is provided with the heat dissipation aluminum shell, and heat generated by the battery body during working can be dissipated through the heat dissipation aluminum shell, so that the heat dissipation operation of the battery body is realized;

be provided with the connection shell, it has the coolant liquid to connect the inside injection of shell, and when battery body calorific capacity was too big, the crooked deformation takes place for the hot bimetallic strip on the heat dissipation aluminum hull, and then can impress the coolant liquid to the heat dissipation aluminum hull in, and the coolant liquid cooperation heat dissipation aluminum hull can be quick derive the heat, improves the radiating effect, has guaranteed the work efficiency of battery, has guaranteed the security simultaneously.

Drawings

FIG. 1 is a schematic diagram of the overall explosion structure of the present invention;

FIG. 2 is a schematic view of the overall cross-sectional structure of the present invention;

fig. 3 is a schematic top view of the connecting shell and the hole groove of the present invention;

fig. 4 is a schematic view of the heat dissipation aluminum case and the groove of the present invention.

In the figure: 1. a battery body; 2. a heat dissipating aluminum housing; 3. a fixing plate; 4. a thermal bimetallic strip; 5. a cooling tank; 6. connecting a gasket; 7. a communicating groove; 8. a connecting shell; 9. a hole groove; 10. sealing the rubber sheet; 11. and (4) a groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a ternary lithium ion battery with good heat dissipation performance comprises a battery body 1 and a heat dissipation aluminum shell 2, wherein the battery body 1 is arranged in the heat dissipation aluminum shell 2, the inner wall of the heat dissipation aluminum shell 2 is connected with a fixing plate 3 in a welding manner, cooling grooves 5 distributed at equal intervals are formed in the wall body of the heat dissipation aluminum shell 2, the bottom surface of the heat dissipation aluminum shell 2 is in sealing bonding with a connecting shell 8 through a connecting gasket 6, thermal bimetallic strips 4 are connected to the two sides of the fixing plate 3 in a welding manner, communicating grooves 7 distributed at equal intervals are formed in the wall body at the two sides of the connecting shell 6, hole grooves 9 distributed at equal intervals are formed in the wall body at the two sides of the connecting shell 8, the inner wall of the connecting shell 8 is in sealing bonding with the four sides of a sealing rubber sheet 10, cooling liquid is injected into a cavity formed between the sealing rubber sheet 10 and the connecting shell 8, the cooling liquid in the connecting shell 8 and the heat dissipation aluminum shell 2 are two independent heat dissipation mechanisms, and can carry out heat dissipation operation together, the heat dissipation work may be performed only by the heat dissipation aluminum case 2.

Battery body

1 and 2 inside walls of heat dissipation aluminum hull are laminated mutually, and laminating mutually of battery body 1 bottom surface and fixed plate 3, and heat dissipation aluminum hull 2 cooperation fixed plate 3 can fix battery body 1, can prevent like this that battery body 1 from rocking, has guaranteed battery body 1's job stabilization, and the heat that battery body 1 during operation produced simultaneously can the fast transmission for heat dissipation aluminum hull 2 to can dispel the heat to battery body 1 fast through heat dissipation aluminum hull 2.

The top surface of heat dissipation aluminum hull 2 and the bottom surface of connecting shell 8 all offer the recess 11 that is equidistant distribution, and the section of recess 11 is "U" form, and heat dissipation aluminum hull 2 and connecting shell 8 can increase the contact surface with the air through recess 11, can improve the radiating effect like this, and connecting shell 8 can dispel the heat to inside coolant liquid, has guaranteed the cooling effect of coolant liquid.

The thermal bimetallic strip 4 is distributed at equal intervals at two sides of the fixing plate 3, one side of the thermal bimetallic strip 4 with small expansion coefficient faces the sealing rubber sheet 10, the cooling groove 5 is in a U shape, the bottom ends at two sides of the cooling groove are communicated with the bottom surface of the radiating aluminum shell 2, the bottom ends at two sides of the cooling groove 5 are aligned with the communication groove 7 and coaxial, the top end of the hole groove 9 is communicated with the top surface of the connecting shell 8, the top end of the hole groove is aligned with the communication groove 7 and coaxial, and the bottom end of the hole groove 9 is communicated with the inner side wall of the connecting shell 8, when heat cannot be rapidly led out through the radiating aluminum shell 2, the heat is transferred to the thermal bimetallic strip 4 through the fixing plate 3, the thermal bimetallic strip 4 is bent towards one side with small expansion coefficient after being heated, and the sealing rubber sheet 10 can be pressed downwards, so that a downward pressure can be applied to the cooling liquid in the connecting shell 8, and the cooling liquid is forced to flow into the cooling groove 5 through the hole groove 9 and the communication groove 7, thereby improving the heat dissipation capability of the heat dissipation aluminum case 2.

The top surface of the connecting shell 8 is open and is made of aluminum, the bottom surface of the radiating aluminum shell 2 is open, the connecting gasket 6 is rectangular frame and is made of rubber, and the connecting gasket 6, the connecting shell 8 and the radiating aluminum shell 2 are combined into a hollow square structure, so that the connecting shell 8 and the radiating aluminum shell 2 can wrap the battery body 1, the battery body 1 can be protected while the radiating function is realized, the battery body 1 is prevented from being damaged by extrusion, meanwhile, the connecting shell 8 is indirectly contacted with the radiating aluminum shell 2 through the connecting gasket 6, the connecting gasket 6 has poor thermal conductivity, heat on the radiating aluminum shell 2 can not be transferred into the connecting shell 8, the cooling liquid in the connecting shell 8 has good cooling effect, when the cooling liquid is introduced into the radiating aluminum shell 2, the heat in the radiating aluminum shell 2 can be rapidly absorbed, the heat dissipation effect is improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a ternary lithium ion battery that heat dispersion is good, includes battery body (1) and heat dissipation aluminum hull (2), its characterized in that: battery body (1) sets up in heat dissipation aluminum hull (2), and the inner wall welded connection of heat dissipation aluminum hull (2) has fixed plate (3), cooling bath (5) that are equidistant distribution have been seted up in heat dissipation aluminum hull (2) wall body, and heat dissipation aluminum hull (2) underrun connecting pad (6) and connect shell (8) sealing bonding, the both sides welded connection of fixed plate (3) has hot bimetallic strip (4), connecting pad (6) both sides wall body is seted up and is equidistant distribution's intercommunication groove (7), connect the internal hole groove (9) of seting up being equidistant distribution of shell (8) both sides wall, and connect the four sides sealing bonding of shell (8) inner wall and rubber sheet (10), the intracavity that forms between rubber sheet (10) and the connection shell (8) is injected with the coolant liquid.

2. The ternary lithium ion battery with good heat dissipation performance of claim 1, wherein: the battery body (1) is attached to the inner side wall of the heat dissipation aluminum shell (2), and the bottom surface of the battery body (1) is attached to the fixing plate (3).

3. The ternary lithium ion battery with good heat dissipation performance of claim 2, wherein: the top surface of the heat dissipation aluminum shell (2) and the bottom surface of the connecting shell (8) are both provided with grooves (11) which are distributed at equal intervals, and the cross section of each groove (11) is U-shaped.

4. The ternary lithium ion battery with good heat dissipation performance of claim 1, wherein: the thermal bimetallic strips (4) are distributed on two sides of the fixing plate (3) at equal intervals, and one side of the thermal bimetallic strip (4) with a small expansion coefficient faces the sealing rubber sheet (10).

5. The ternary lithium ion battery with good heat dissipation performance of claim 1, wherein: the cooling groove (5) is in an inverted U shape, the bottom ends of two sides of the cooling groove are communicated with the bottom surface of the radiating aluminum shell (2), and the bottom ends of two sides of the cooling groove (5) are aligned with the communication groove (7) and are coaxial.

6. The ternary lithium ion battery with good heat dissipation performance of claim 5, wherein: the top end of the hole groove (9) is communicated with the top surface of the connecting shell (8), the top end of the hole groove is aligned with the communicating groove (7) and coaxial with the axis, and the bottom end of the hole groove (9) is communicated with the inner side wall of the connecting shell (8).

7. The ternary lithium ion battery with good heat dissipation performance of claim 3, wherein: connect shell (8) top surface to be the opening form, and it is the aluminium material, and heat dissipation aluminum hull (2) bottom surface is the opening form, and connecting pad (6) are the rectangular frame form, and it is the rubber material, and connecting pad (6), connecting shell (8) and heat dissipation aluminum hull (2) make up into hollow square body structure.