CN210224216U

CN210224216U - Lithium battery protection board with built-in heat dissipation mechanism

Info

Publication number: CN210224216U
Application number: CN201920770091.5U
Authority: CN
Inventors: Dongxing Liu; 刘东星; Wei Pan; 潘伟; Yiquan Cheng; 程衣权
Original assignee: Shenzhen Xingwei Technology Co ltd
Current assignee: Shenzhen Xingwei Technology Co ltd
Priority date: 2019-05-27
Filing date: 2019-05-27
Publication date: 2020-03-31
Anticipated expiration: 2029-05-27

Abstract

The utility model relates to the technical field of lithium battery protection plates, in particular to a lithium battery protection plate with a built-in heat dissipation mechanism, which comprises a plate body, wherein the plate body is of a hollow structure, a through groove is arranged at the center of the top surface of the plate body and penetrates through the plate body, connecting blocks are arranged on the peripheral inner walls of the through groove, a battery box is arranged in the through groove, the peripheral outer walls of the battery box are fixedly bonded with the connecting blocks through glue, a motor is embedded in the connecting blocks, a fan blade is connected on the output shaft of the motor, a plurality of ventilation openings are arranged on the peripheral outer walls of the plate body, the lithium battery protection plate with the built-in heat dissipation mechanism drives the fan blade to rotate through the arranged motor and generates wind power, so that the heat energy in the lithium battery protection plate can be rapidly discharged to the outside from, the problem of control IC, MOS switch and resistance-capacitance fragile on the protection shield is solved.

Description

Lithium battery protection board with built-in heat dissipation mechanism

Technical Field

The utility model relates to a lithium battery protection shield technical field specifically is a lithium battery protection shield of built-in heat dissipation mechanism.

Background

The lithium battery protection board is used for charging and discharging protection of the series lithium battery pack, and can ensure that the voltage difference between the single batteries is smaller than a set value (generally +/-20 mV) when the battery pack is fully charged, so that the uniform charging of the single batteries of the battery pack is realized, and the charging effect in a series charging mode is effectively improved; simultaneously, the overvoltage, undervoltage, overcurrent, short circuit and overtemperature states of each single battery in the battery pack are detected, so that the service life of the battery is protected and prolonged; the undervoltage protection enables each single battery to be prevented from being damaged due to overdischarge when the single battery is used in a discharging mode, parts such as a control IC, an MOS switch and a resistor capacitor on an existing lithium battery protection board are integrally welded on the protection board, and the temperature on the protection board rises along with the external temperature in summer, so that the control IC, the MOS switch and the resistor capacitor on the protection board are easily damaged, and the whole protection board is scrapped.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lithium battery protection shield of built-in heat dissipation mechanism to control IC, MOS switch, resistance capacitance fragile scheduling problem on solving the protection shield that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a lithium battery protection board of built-in heat dissipation mechanism, the package rubbing board body, the plate body is hollow structure, plate body top surface center department has seted up logical groove, it runs through to lead to the groove the plate body, the inner wall all is equipped with the connecting block all around to lead to the groove, it is equipped with the battery case to lead to the inslot, the outer wall all around of battery case with the connecting block passes through glue bonding fixed, the embedded motor that is equipped with of connecting block, be connected with the fan leaf on the output shaft of motor, a plurality of vents have been seted up to the outer wall all around of plate body, the vent.

Preferably, the connecting block and the plate body are fixedly bonded through glue.

Preferably, the ventilation openings are arranged in a linear and equidistant manner.

Preferably, the inner wall of the plate body is coated with silicone grease.

Preferably, two opposite connecting blocks are arranged in a staggered manner.

Compared with the prior art, the beneficial effects of the utility model are that: this lithium battery protection board of built-in heat dissipation mechanism drives the fan leaf through the motor that sets up and rotates and produce wind-force, makes the heat energy in the lithium battery protection board arrange to the external world from the vent fast, and then makes the temperature of lithium battery protection board distribute rapidly to control IC, MOS switch, resistance capacitance to on the lithium battery protection board have protected, have solved the problem of control IC, MOS switch and resistance capacitance fragile on the protection board.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the connection block structure of the present invention;

fig. 3 is a schematic diagram of the cross-sectional structure of the plate body in the present invention.

In the figure: 1. a plate body; 11. a through groove; 12. a vent; 2. connecting blocks; 3. a battery case; 4. a motor; 5. a fan blade; 6. and (3) silicone grease.

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.

In the description of the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or components referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1-3, the present invention provides a technical solution:

the utility model provides a lithium battery protection board of built-in heat dissipation mechanism, which comprises a plate body 1, plate body 1 is hollow structure, the central department of 1 top surface of plate body has seted up logical groove 11, it runs through plate body 1 to lead to groove 11, the inner wall all around that leads to groove 11 all is equipped with connecting block 2, it is equipped with battery case 3 to lead to the inslot 11, battery case 3 outer wall all around passes through glue bonding with connecting block 2 fixed, the embedded motor 4 that is equipped with of connecting block 2, be connected with fan leaf 5 on motor 4's the output shaft, a plurality of vents 12 have been seted up to the outer wall all around of plate body.

Specifically, the connecting block 2 is fixedly bonded with the plate body 1 through glue, so that the connecting stability between the connecting block 2 and the plate body 1 is ensured.

Specifically, the ventilation openings 12 are linearly arranged at equal intervals, so that the uniformity and the high efficiency of heat dissipation in the plate body 1 are ensured.

Specifically, the inner wall of the plate body 1 is coated with the silicone grease 6, and the silicone grease 6 has a strong heat absorption function, so that the heat dissipation efficiency is improved.

Specifically, two connecting blocks 2 that are mutually opposite are crisscross arranges each other, guarantee that the wind that each fan leaf 5 blew out staggers each other, make the heat effluvium in the plate body 1 to external speed accelerate.

It is worth noting that the control IC, the MOS switch and the resistor-capacitor are integrally welded on the plate body 1, wherein the control IC controls the MOS switch to be turned on under all normal conditions, so that the battery cell is communicated with an external circuit, and when the voltage of the battery cell or the loop current exceeds a specified value, the control IC immediately controls the MOS switch to be turned off within tens of milliseconds, so that the safety of the battery cell is protected.

It should be noted that the control IC and MOS switches referred to in the present invention are prior art and can be implemented by those skilled in the art without further elaboration, and the protection of the present invention does not relate to the improvement of the internal structure and method.

It should be noted that the batteries in the battery box 3 are all electrically connected to the motor 4 through wires, and preferably, the wires are further provided with a switch for controlling the rotation and stop of the motor 4.

It should be noted that the motor 4 in this embodiment is an RS370 motor produced by shenzhen new fukang scientific and technology limited, and its matching circuit and power supply can be provided by the manufacturer, in addition, the present invention relates to the circuit, electronic components and modules, which are all the prior art, and those skilled in the art can completely realize the protection without needless to say, the protection of the present invention also does not relate to the improvement of the internal structure and method.

The lithium battery protection board of the built-in heat dissipation mechanism of this embodiment is when using, at first installs the battery in battery case 3, and when summer weather is hotter, will control motor 4 pivoted switch and open, make motor 4's output shaft drive fan leaf 5 and rotate, at this moment fan leaf 5 just can be to the interior wind-force that produces of plate body 1, make the temperature in the plate body 1 can discharge to the external world from vent 12 rapidly.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a lithium battery protection board of built-in heat dissipation mechanism, includes plate body (1), its characterized in that: the utility model discloses a board body, including plate body (1), plate body (1) top surface center department has seted up logical groove (11), it runs through to lead to groove (11) plate body (1), the inner wall all around that leads to groove (11) all is equipped with connecting block (2), be equipped with battery case (3) in leading to groove (11), the outer wall all around of battery case (3) with connecting block (2) bond fixedly through glue, connecting block (2) embedded motor (4) that are equipped with, be connected with fan leaf (5) on the output shaft of motor (4), a plurality of vents (12) have been seted up to the outer wall all around of plate body (1), vent (12) run through the outer wall of plate body (1) is linked together rather than inside.

2. The lithium battery protection board with a built-in heat dissipation mechanism as claimed in claim 1, wherein: the connecting block (2) and the plate body (1) are fixedly bonded through glue.

3. The lithium battery protection board with a built-in heat dissipation mechanism as claimed in claim 1, wherein: the ventilation openings (12) are linearly arranged at equal intervals.

4. The lithium battery protection board with a built-in heat dissipation mechanism as claimed in claim 1, wherein: the inner wall of the plate body (1) is coated with silicone grease (6).

5. The lithium battery protection board with a built-in heat dissipation mechanism as claimed in claim 1, wherein: the two opposite connecting blocks (2) are arranged in a staggered mode.