CN213936445U

CN213936445U - Novel large-capacity wound lithium battery

Info

Publication number: CN213936445U
Application number: CN202022802888.4U
Authority: CN
Inventors: 罗涛; 蔡伟; 孙小红; 冯耀; 余文华
Original assignee: Jiangxi Anpuda New Energy Technology Co ltd
Current assignee: Jiangxi Anpuda New Energy Technology Co ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-08-10
Anticipated expiration: 2030-11-27

Abstract

The utility model discloses a novel large capacity is around a formula of book lithium cell, including the casing, the bottom fixed mounting of casing has the end cover, and the both ends of end cover bottom are fixed mounting respectively has anodal ear and negative pole ear, and the middle part fixed mounting of casing inner wall has electric core, and the middle part fixed mounting of electric core inner wall has insulating heat dissipation post, and insulating heat dissipation post comprises insulating stick and a plurality of heat dissipation stick, the utility model relates to a novel large capacity is around a formula of book lithium cell, and spacing recess in the casing supports spacingly to inside electric core, has improved the stability of placing of electric core, avoids taking place to rock the damage; through the insulating heat dissipation post in the middle of electric core can guarantee electric core coiling compactness in the time make things convenient for the heat dissipation in the middle of the electric core, the cross insulating heat dissipation post can improve the radiating effect, the installation of fire-retardant board has increased the security that the casing used, the setting of barrier film prevents anodal ear and negative pole ear direct contact and then avoids inside to take place the short circuit.

Description

Novel large-capacity wound lithium battery

Technical Field

The utility model relates to a lithium cell field specifically is a novel large capacity is around a formula of book lithium cell.

Background

At present: the winding battery is a battery formed by electric cores formed by combination in a winding mode, has super-strong high-rate discharge capacity, good working capacity in a partial charge state, no free electrolyte, capability of being placed in any direction for working, firm structure and strong shock resistance, and is widely applied to the fields of vehicle starting, automobile emergency power supply, generator starting, hybrid electric automobiles and solar energy storage.

The existing winding type battery is not provided with a heat dissipation structure, so that the winding type battery is easily damaged due to high temperature in use, and the service life is influenced. And the lithium battery components inside the existing winding type high-power lithium ion battery are all scattered in the shell, so that the structural strength is low, and the lithium battery components are easy to damage when being shaken.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel large capacity is around a formula lithium cell to it does not have heat radiation structure to propose current coiling formula battery in the above-mentioned background art to solve, therefore coiling battery in use damages because of high temperature easily, influences life. And the lithium battery components inside the existing coiling type high-power lithium ion battery are all scattered in the shell, so that the structural strength is low, and the lithium battery components are easy to damage when being shaken.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a novel large capacity is around a formula of book lithium cell, which comprises a housin, the bottom fixed mounting of casing has the end cover, the both ends difference fixed mounting of end cover bottom has anodal ear and negative pole ear, shells inner wall's middle part fixed mounting has electric core, the middle part fixed mounting of electric core inner wall has insulating heat dissipation post, insulating heat dissipation post comprises insulating stick and a plurality of cooling rod, insulating stick's both sides fixed mounting has a plurality of cooling rod, a plurality of the equal fixed mounting in inside of cooling rod has a plurality of semiconductor refrigeration piece, a plurality of heat dissipation through-hole has been seted up on insulating stick's surface.

As an optimized technical scheme of the utility model, the inside fixed mounting of casing has fire-retardant board.

As a preferred technical scheme of the utility model, spacing recess has been seted up at the center of shells inner wall bottom, the bottom of spacing recess and the central fixed connection of electricity core bottom, spacing recess and the junction fixed mounting of electricity core have the protection shield.

As an optimal technical scheme of the utility model, the middle part fixed mounting of end cover inner wall has the barrier film.

As an optimized technical scheme of the utility model, wear pad, four have all been laid to four sides at casing top wear pad's the equal fixed mounting in surface has a plurality of strengthening rib.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the limiting groove in the shell supports and limits the internal electric core, so that the placing stability of the electric core is improved, the shaking damage is avoided, the heat dissipation in the middle of the electric core can be facilitated while the winding compactness of the electric core is ensured through the insulating heat dissipation column in the middle of the electric core, and the heat dissipation effect can be improved through the cross insulating heat dissipation column;

2. the installation of fire-retardant board has increased the security that the casing used, and the setting of barrier film prevents anodal ear and negative pole ear direct contact and then avoids inside to take place the short circuit.

Drawings

Fig. 1 is a perspective view of the present invention;

fig. 2 is a front sectional view of the present invention;

fig. 3 is a perspective view of the insulating rod of the present invention.

In the figure: 1. a housing; 2. an end cap; 3. a positive tab; 4. a negative tab; 5. a wear pad; 6. an electric core; 7. an insulating heat-dissipating stud; 8. an isolation film; 9. a limiting groove; 10. a protection plate; 11. a flame retardant sheet; 12. a heat dissipation rod; 13. a semiconductor refrigeration sheet; 14. an insulating rod; 15. and the heat dissipation through hole.

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.

Please refer to fig. 1-3, the utility model provides a novel large capacity is around a formula of book lithium cell, including casing 1, casing 1's bottom fixed mounting has end cover 2, the both ends of end cover 2 bottom fixed mounting respectively have anodal ear 3 and negative pole ear 4, the middle part fixed mounting of casing 1 inner wall has electric core 6, the middle part fixed mounting of electric core 6 inner wall has insulating heat dissipation post 7, insulating heat dissipation post 7 comprises insulating stick 14 and a plurality of heat dissipation stick 12, the both sides fixed mounting of insulating stick 14 has a plurality of heat dissipation stick 12, the equal fixed mounting in inside of a plurality of heat dissipation stick 12 has a plurality of semiconductor refrigeration piece 13, a plurality of heat dissipation through-hole 15 has been seted up on insulating stick 14's surface.

Preferably, the flame retardant plate 11 is fixedly installed inside the housing 1, and the installation of the flame retardant plate 11 increases the safety of the use of the housing 1.

Preferably, spacing recess 9 has been seted up at the center of casing 1 inner wall bottom, and the bottom of spacing recess 9 and the central fixed connection of electricity core 6 bottom, and spacing recess 9 and the junction fixed mounting of electricity core 6 have a protection shield 10, and the offering of spacing recess 9 supports spacing to electricity core 6, avoids taking place to rock the damage.

Preferably, the middle part of the inner wall of the end cover 2 is fixedly provided with an isolating membrane 8, and the isolating membrane 8 is arranged to prevent the positive electrode tab 3 and the negative electrode tab 4 from directly contacting and further avoid internal short circuit.

Preferably, wear pads 5 are laid on four sides of the top of the housing 1, a plurality of reinforcing ribs are fixedly mounted on the surfaces of the four wear pads 5, and the laying of the wear pads 5 prolongs the service life of the housing 1.

When the novel large-capacity wound lithium battery is used, the limiting groove 9 in the shell 1 supports and limits the internal electric core 6, so that the placing stability of the electric core 6 is improved, and the shaking damage is avoided; through insulating heat dissipation post 7 in the middle of electric core 6 can be when guaranteeing electric core 6 coiling compactness make things convenient for the heat dissipation in the middle of electric core 6, cross insulating heat dissipation post 7 can improve the radiating effect, and the installation of fire-retardant board 11 has increased the security that casing 1 used, and setting up of barrier film 8 prevents anodal ear 3 and negative pole ear 4 direct contact and then avoids inside to take place the short circuit, and the life of wearing pad 5 laying extension casing 1.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a novel large capacity is around formula of book lithium cell, includes casing (1), its characterized in that: the bottom fixed mounting of casing (1) has end cover (2), the both ends difference fixed mounting of end cover (2) bottom has anodal ear (3) and negative pole ear (4), the middle part fixed mounting of casing (1) inner wall has electric core (6), the middle part fixed mounting of electric core (6) inner wall has insulating heat dissipation post (7), insulating heat dissipation post (7) comprise insulating rod (14) and a plurality of heat dissipation stick (12), the both sides fixed mounting of insulating rod (14) has a plurality of heat dissipation stick (12), a plurality of the equal fixed mounting in inside of heat dissipation stick (12) has a plurality of semiconductor refrigeration piece (13), a plurality of heat dissipation through-hole (15) have been seted up on the surface of insulating rod (14).

2. A novel high-capacity wound lithium battery as claimed in claim 1, wherein: and a flame-retardant plate (11) is fixedly arranged in the shell (1).

3. A novel high-capacity wound lithium battery as claimed in claim 1, wherein: spacing recess (9) have been seted up at the center of casing (1) inner wall bottom, the center fixed connection of the bottom of spacing recess (9) and electric core (6) bottom, the junction fixed mounting of spacing recess (9) and electric core (6) has protection shield (10).

4. A novel high-capacity wound lithium battery as claimed in claim 1, wherein: and the middle part of the inner wall of the end cover (2) is fixedly provided with an isolating membrane (8).

5. A novel high-capacity wound lithium battery as claimed in claim 1, wherein: wear pads (5) are laid on four sides of the top of the shell (1), and a plurality of reinforcing ribs are fixedly mounted on the surfaces of the four wear pads (5).