CN213905452U

CN213905452U - Be applied to heat radiation structure of small-size power battery package

Info

Publication number: CN213905452U
Application number: CN202022914268.XU
Authority: CN
Inventors: 陈亮
Original assignee: Huizhou Desay Battery Co Ltd
Current assignee: Huizhou Desay Battery Co Ltd
Priority date: 2020-12-07
Filing date: 2020-12-07
Publication date: 2021-08-06
Anticipated expiration: 2030-12-07

Abstract

The utility model relates to the technical field of batteries, in particular to a heat dissipation structure applied to a small-sized power battery pack, the small-sized power battery pack comprises a battery management circuit board and a battery core group arranged at the lower end of the battery management circuit board, an MOS (metal oxide semiconductor) tube connection area is arranged on the battery management circuit board, the heat dissipation structure comprises a bottom shell and an upper cover arranged on the bottom shell, an installation cavity is formed between the bottom shell and the upper cover, and the small-sized power battery pack is positioned in the installation cavity; a heat dissipation piece is embedded in the position, corresponding to the MOS tube connection area, of the upper cover, a first heat conduction piece is arranged at the lower end of the heat dissipation piece, a second heat conduction piece is arranged at the upper end of the heat dissipation piece, and the first heat conduction piece is tightly attached to the MOS tube connection area; the utility model discloses the upper cover is derived to the heat that produces the MOS pipe that can be timely to on distributing complete machine equipment by the upper cover, having better radiating effect, and satisfying waterproof demand, improve the security of using.

Description

Be applied to heat radiation structure of small-size power battery package

Technical Field

The utility model relates to a battery technology field especially relates to a be applied to heat radiation structure of small-size power battery package.

Background

Along with the appearance of electric scooter, electric bicycle now, more and more small-size power battery package is applied to in the outdoor product, consequently, also higher and higher to the security requirement of small-size power battery package.

In practical application, the battery management circuit board of the small power battery pack is found to generate heat in the battery charging or discharging process, and the MOS tube on the battery management circuit board transmits heat to the electric core group, so that the temperature of the whole battery pack is very high, and certain potential safety hazards exist.

For the above-mentioned heat generation phenomenon, the heat dissipation scheme adopted in the industry at present generally is to install the heat sink on the components or to set up the heat dissipation window on the shell, etc., but some battery pack schemes can not directly install the heat sink to the battery management circuit board for the MOS tube heat dissipation in the actual design because of the limitation of battery structure size, installation space, or to other mechanical properties, battery waterproofing, etc., and the setting up the heat dissipation window can not satisfy the waterproofing requirement and the heat dissipation effect is not good.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned unable installation fin that exists, radiating effect are poor, can't satisfy waterproof requirement and the poor problem of operational safety, the utility model provides a be applied to small-size power battery package's heat radiation structure, can be timely with the heat that MOS pipe produced derive the upper cover to on distributing complete machine equipment by the upper cover, having better radiating effect, and satisfying waterproof demand, improve the security of using.

In order to solve the technical problem, the utility model provides a concrete scheme as follows:

a heat dissipation structure applied to a small power battery pack comprises a battery management circuit board and a battery core group arranged at the lower end of the battery management circuit board, wherein an MOS (metal oxide semiconductor) tube connection area is arranged on the battery management circuit board, the heat dissipation structure comprises a bottom shell and an upper cover arranged on the bottom shell, an installation cavity is formed between the bottom shell and the upper cover, and the small power battery pack is positioned in the installation cavity;

the heat dissipation structure is characterized in that a heat dissipation part is embedded in a position, corresponding to the MOS tube connection area, on the upper cover, a first heat conduction part is arranged at the lower end of the heat dissipation part, a second heat conduction part is arranged at the upper end of the heat dissipation part, and the first heat conduction part is tightly attached to the MOS tube connection area.

Optionally, the heat dissipation member is an aluminum profile heat dissipation member, the aluminum profile has good heat dissipation effect, corrosion resistance and machinability, and when the aluminum profile is applied to the heat dissipation structure, the heat dissipation effect can be improved, the service life can be prolonged, and the aluminum profile heat dissipation member is easy to process and obtain.

Optionally, the first heat-conducting piece is a heat-conducting silica gel pad, the second heat-conducting piece is a heat-conducting silica gel pad, and the silica gel pad has certain buffering performance and can avoid damage to components such as an MOS (metal oxide semiconductor) tube in the MOS tube connection area when being tightly attached to the MOS tube connection area.

Optionally, the upper cover is provided with a balance member, and the thickness of the balance member is the same as that of the second heat conduction member, so that the surface of the upper cover is kept horizontally balanced, and the upper cover can be better assembled and used.

Optionally, the bottom shell and the upper cover are detachably connected, so that assembly, disassembly and the like are facilitated.

Optionally, the bottom shell and the upper cover are both made of a mixture of PC and ABS materials, so that the fireproof bottom shell has good mechanical strength, toughness and flame retardance and has a fireproof function.

Optionally, the external connection of electric core group has the installing support, be provided with the connecting hole on the installing support, the drain pan is inside to be provided with the screw thread spliced pole that corresponds with the connecting hole, is convenient for fix the installing support, improves the stability of whole use.

Optionally, the bottom surface upper end of drain pan is provided with spacing muscle, the lower extreme of installing support is provided with the spacing groove with spacing muscle matched with, is convenient for carry out spacing installation and fixed to the installing support, improves the convenience of installation and the stability of use.

Compared with the prior art, the beneficial effects of the utility model reside in that: the utility model provides a pair of be applied to heat radiation structure of small-size power battery package, the upper cover is derived to the heat that can be timely produces the MOS pipe to on distributing to complete machine equipment by the upper cover, having better radiating effect, and satisfying waterproof demand, improve the security of using.

Drawings

Fig. 1 is an exploded view of an overall structure of a heat dissipation structure applied to a small power battery pack provided in an embodiment of the present invention.

Wherein, 1 is a battery management circuit board; 11 is MOS tube connection region; 2 is an electric core group; 3 is a bottom shell; 31 is a threaded connecting column; 32 is a limit rib; 4 is an upper cover; 5 is a heat sink; 6 is a first heat-conducting member; 7 is a second heat-conducting member; 8 is a balance piece; 9 is a mounting bracket; 91 is a connecting hole; 92 is a limit groove.

Detailed Description

In order to explain the technical solution of the present invention in detail, the following will combine the drawings of the embodiments of the present invention to perform clear and complete description on the technical solution of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

For example, the heat dissipation structure applied to the small power battery pack comprises a battery management circuit board and a battery core group arranged at the lower end of the battery management circuit board, wherein an MOS (metal oxide semiconductor) tube connection area is arranged on the battery management circuit board; the upper cover is provided with a heat dissipation piece in an embedded mode corresponding to the position of the MOS tube connection area, the lower end of the heat dissipation piece is provided with a first heat conduction piece, the upper end of the heat dissipation piece is provided with a second heat conduction piece, and the first heat conduction piece is tightly attached to the MOS tube connection area.

The heat radiation structure who is applied to small-size power battery package that this embodiment provided, can be timely with the heat that the MOS pipe produced derive the upper cover to on the complete machine equipment is gived off by the upper cover, have better radiating effect, and satisfy waterproof demand, improve the security of using.

As shown in fig. 1, a heat dissipation structure applied to a small power battery pack, wherein the small power battery pack includes a battery management circuit board 1 and a core pack 2 disposed at a lower end of the battery management circuit board, and a MOS transistor connection area 11 is disposed on the battery management circuit board, and the MOS transistor connection area generates a large amount of heat during a charging or discharging process of the small power battery pack. The heat dissipation structure comprises a bottom shell 3 and an upper cover 4 arranged on the bottom shell, an installation cavity is formed between the bottom shell and the upper cover, and the small power battery pack is located in the installation cavity.

The upper cover is provided with a heat radiating piece 5 in an embedded mode corresponding to the position of the MOS tube connection area, the lower end of the heat radiating piece is provided with a first heat conducting piece 6, the upper end of the heat radiating piece is provided with a second heat conducting piece 7, and the first heat conducting piece is tightly attached to the MOS tube connection area.

Because MOS pipe joining region is hugged closely to first heat-conducting piece, when small-size power battery package charge or the discharge in-process, a large amount of heats that MOS pipe joining region produced can be derived through first heat-conducting piece, transmit the heat to the radiating piece through first heat-conducting piece, transmit the heat to the complete machine equipment outside the battery package by the second heat-conducting piece of radiating piece upper end again, give off the heat through complete machine equipment, reach better radiating effect.

In some embodiments, the heat sink is an aluminum profile heat sink.

The aluminum profile has good heat dissipation effect, corrosion resistance and machinability, and can improve the heat dissipation effect, prolong the service life and be easy to process and obtain when being applied to the heat dissipation structure.

In order to facilitate processing and installation, the heat dissipation piece can be arranged to be rectangular and embedded on the upper cover in an injection molding mode, and the use stability is improved.

In some embodiments, the first heat-conducting member is a heat-conducting silicone pad, and the second heat-conducting member is a heat-conducting silicone pad.

The silica gel pad has certain shock-absorbing capacity, when can avoiding hugging closely with MOS pipe joining region, causes the damage to components and parts such as MOS pipe on the MOS pipe joining region.

In order to keep better installation balance degree, the upper cover is provided with the balance piece 8, the thickness of the balance piece is the same as that of the second heat-conducting piece, so that the surface of the upper cover keeps horizontal balance, and the upper cover is better assembled and used.

In some embodiments, the bottom case and the upper cover are detachably connected, so that the bottom case and the upper cover are convenient to assemble and disassemble, and the bottom case and the upper cover can be specifically connected by threads or buckles, without limitation.

The bottom shell and the upper cover are both made of PC and ABS materials in a mixed mode, and the fireproof bottom shell has good mechanical strength, toughness and fire resistance and has a fireproof function.

In some embodiments, the outer portion of the electric core assembly is connected with the mounting bracket 9, the mounting bracket is provided with a connecting hole 91, and the bottom shell is internally provided with a threaded connecting post 31 corresponding to the connecting hole, so that the mounting bracket is convenient to fix, and the stability of the whole use is improved.

Wherein, be provided with spacing muscle 32 in the bottom surface upper end of drain pan, the lower extreme of installing support is provided with the spacing groove 92 with spacing muscle matched with, is convenient for carry out spacing installation and fixed to the installing support, improves the convenience of installation and the stability of use.

The utility model provides a pair of be applied to heat radiation structure of small-size power battery package, the upper cover is derived to the heat that can be timely produces the MOS pipe to on distributing to complete machine equipment by the upper cover, having better radiating effect, and satisfying waterproof demand, improve the security of using.

It is understood that different embodiments among the components in the above embodiments can be combined and implemented, and the embodiments are only for illustrating the implementation of specific structures and are not limited to the implementation of the embodiments.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. A heat dissipation structure applied to a small-sized power battery pack, the small-sized power battery pack comprises a battery management circuit board (1) and a battery core group (2) arranged at the lower end of the battery management circuit board (1), an MOS tube connecting area (11) is arranged on the battery management circuit board (1), and the heat dissipation structure is characterized in that,

the heat dissipation structure comprises a bottom shell (3) and an upper cover (4) arranged on the bottom shell (3), an installation cavity is formed between the bottom shell (3) and the upper cover (4), and the small power battery pack is located in the installation cavity;

the MOS tube heat dissipation structure is characterized in that a heat dissipation piece (5) is embedded in a position, corresponding to the MOS tube connection area (11), on the upper cover (4), a first heat conduction piece (6) is arranged at the lower end of the heat dissipation piece (5), a second heat conduction piece (7) is arranged at the upper end of the heat dissipation piece (5), and the MOS tube connection area (11) is tightly attached to the first heat conduction piece (6).

2. The heat dissipation structure applied to the small-sized power battery pack as recited in claim 1, wherein the heat dissipation member (5) is an aluminum profile heat dissipation member.

3. The heat dissipation structure applied to the small-sized power battery pack according to claim 1, wherein the first heat conduction member (6) is a heat conduction silicone pad, and the second heat conduction member (7) is a heat conduction silicone pad.

4. The heat dissipation structure applied to the small-sized power battery pack according to claim 1, wherein a balance member (8) is provided on the upper cover (4), and the thickness of the balance member (8) is the same as that of the second heat conduction member (7).

5. The heat dissipation structure applied to the small power battery pack as claimed in claim 1, wherein the bottom case (3) is detachably connected with the upper cover (4).

6. The heat dissipation structure applied to the small power battery pack according to claim 1, wherein the bottom case (3) and the upper cover (4) are both made of a mixture of PC and ABS materials.

7. The heat dissipation structure applied to the small-sized power battery pack according to claim 1, wherein a mounting bracket (9) is connected to the outside of the electric core pack (2), a connection hole (91) is formed in the mounting bracket (9), and a threaded connection post (31) corresponding to the connection hole (91) is formed in the bottom case (3).

8. The heat dissipation structure applied to the small-sized power battery pack as claimed in claim 7, wherein a limiting rib (32) is arranged at the upper end of the bottom surface of the bottom shell (3), and a limiting groove (92) matched with the limiting rib (32) is arranged at the lower end of the mounting bracket (9).