Lithium battery protection plate structure with balanced heat dissipation

Abstract

The utility model discloses a lithium battery protection plate structure with balanced heat dissipation, and relates to the technical field of lithium battery protection plates. The device comprises a heat dissipation power board and a heat dissipation control board, electronic elements are fixedly installed on the contact faces of the heat dissipation power board and the heat dissipation control board, the heat dissipation power board and the heat dissipation control board are provided with a heat conduction mechanism, a heat dissipation control board heat dissipation body in the heat conduction mechanism is fixedly installed in the middle of a heat dissipation control board transverse shaft, and heat dissipation power board heat dissipation bodies are fixedly installed at the two ends of the heat dissipation power board. The heat dissipation control panel heat dissipation body and the heat dissipation power board heat dissipation body abut against the outer surface of the electronic element, and the heat dissipation control panel is electrically connected with the heat dissipation power board. The device adopts a mutually balanced heat dissipation effect design, so that the original heat conduction in one direction is changed into heat conduction in two directions, the heat cannot be accumulated on one side, the heat dissipation in the two directions is changed to increase the heat dissipation area, and the requirements of a user are met.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery protection plates, in particular to a lithium battery protection plate structure with balanced heat dissipation. Background Art

[0002] The lithium battery protection board is an electronic protection device for lithium-ion battery packs. Its main function is to protect lithium battery packs from adverse conditions such as overcharge, over-discharge, short circuit, overcurrent and over-temperature, thereby extending the battery life and improving the safety of use. The working principle of the lithium battery protection board is based on two core components: protection IC and MOSFET. The protection IC obtains reliable protection parameters through a precise comparator, while the MOSFET acts as a high-speed switch in the main charge and discharge circuit to perform protection actions. When parameters such as battery voltage, current or temperature exceed the set range, the protection IC will control the switching state of the MOSFET, thereby cutting off or restoring the charge and discharge circuit of the battery pack.

[0003] At present, the heat dissipation of high-power lithium battery protection boards on the market almost all relies on the aluminum substrate material of the power board itself. Due to the limited size of the aluminum substrate, when the heat generation is large, due to the limitation of the heat dissipation area, it is easy to cause the heat dissipation efficiency to fail to meet the heating efficiency, thereby causing damage to the MOS tube. At the same time, single-sided heat dissipation causes the heat to accumulate on one side of the body, and the heat is not easy to discharge. Therefore, we propose a new type of lithium battery protection board structure with balanced heat dissipation to solve the above problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a lithium battery protection board structure with balanced heat dissipation, which solves the problem that the heat dissipation of high-power lithium battery protection boards on the market currently almost all relies on the aluminum substrate material of the power board itself for heat dissipation. Due to the limited size of the aluminum substrate, when the heat generation is large, due to the limitation of the heat dissipation area, it is easy to cause the heat dissipation efficiency to fail to meet the heating efficiency, thereby causing damage to the MOS tube. At the same time, single-sided heat dissipation causes heat to accumulate on one side of the body, making it difficult to discharge the heat.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a heat dissipation balanced lithium battery protection board structure includes a heat dissipation power board and a heat dissipation control board, the heat dissipation power board and the heat dissipation control board are fixedly installed with electronic components on one side, the heat dissipation power board and the heat dissipation control board are provided with a heat conduction mechanism, and the heat conduction mechanism includes a heat dissipation control board heat dissipation body and a heat dissipation power board heat dissipation body;

[0006] The heat dissipation control board heat dissipation body is fixedly installed in the middle of the horizontal axis of the heat dissipation control board, and the heat dissipation power board heat dissipation body is fixedly installed at both ends of the heat dissipation power board, and the heat dissipation control board heat dissipation body and the heat dissipation power board heat dissipation body are both against the outer surface of the electronic component;

[0007] The heat dissipation control board is electrically connected to the heat dissipation power board.

[0008] Preferably, the electronic component includes a heat dissipation control board heating element and a heat dissipation power board heating element;

[0009] The heat dissipation control board heating element is fixedly installed at two ends of the heat dissipation control board, and the heat dissipation power board heating element is fixedly installed at the middle of the horizontal axis of the heat dissipation power board.

[0010] Preferably, a plurality of groups of connecting columns are fixedly installed on both sides of the heat dissipation control board, the other ends of the connecting columns are fixedly connected to the heat dissipation power board, and connecting holes are opened inside the connecting columns, and the connecting holes penetrate the connecting columns and the heat dissipation control board.

[0011] Preferably, a needle holder is fixedly mounted on one side of the heat dissipation control plate.

[0012] Preferably, a pin is fixedly mounted on one side of the heat dissipation power board, and the pin is movably plugged into the inside of the pin seat.

[0013] Preferably, a terminal post is fixedly mounted on the outer surface of the heat dissipation power board.

[0014] Preferably, a wiring plug is fixedly mounted on one side of the heat dissipation control board.

[0015] The utility model discloses a lithium battery protection board structure with balanced heat dissipation, which has the following beneficial effects: the device adopts a mutually balanced heat dissipation effect design, so that the original heat conduction in one direction is changed to heat conduction in two directions, and heat will not be accumulated on one side. At the same time, the heat dissipation in two directions increases the heat dissipation area in disguise, ensuring that the heat dissipation efficiency fully meets the heating efficiency, so that the electronic components on the protection board will not be damaged by high temperature, meeting the needs of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the heat dissipation control board of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the heat dissipation power board of the utility model.

[0020] In the figure: 1. heat dissipation power board; 2. heat dissipation control board; 3. heat conduction mechanism; 301. heat dissipation control board heat sink; 302. heat dissipation power board heat sink; 4. electronic component; 401. heat dissipation control board heating element; 402. heat dissipation power board heating element; 5. wiring plug; 6. terminal post; 7. connecting post; 8. connecting hole; 9. pin; 10. needle holder. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The embodiment of the present application provides a lithium battery protection board structure with balanced heat dissipation, which solves the problem that the heat dissipation of high-power lithium battery protection boards on the market currently almost all relies on the aluminum substrate material of the power board itself for heat dissipation. Due to the limited size of the aluminum substrate, when the heat generation is large, due to the limitation of the heat dissipation area, it is easy for the heat dissipation efficiency to fail to meet the heating efficiency, thereby causing damage to the MOS tube. At the same time, single-sided heat dissipation causes heat to accumulate on one side of the body, making it difficult to discharge the heat.

[0023] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] The utility model embodiment discloses a lithium battery protection plate structure with balanced heat dissipation.

[0025] According to the attached Figure 1-3 As shown, it includes a heat dissipation power board 1 and a heat dissipation control board 2, an electronic component 4 is fixedly installed on a side of the heat dissipation power board 1 that contacts the heat dissipation control board 2, and a heat conduction mechanism 3 is provided on the heat dissipation power board 1 and the heat dissipation control board 2, and the heat conduction mechanism 3 includes a heat dissipation control board heat dissipation body 301 and a heat dissipation power board heat dissipation body 302;

[0026] When the device is used, the wiring socket is connected to the wiring plug 5, the wiring is electrically connected to the heat dissipation control board 2 through the wiring post 6, and the wiring is electrically connected to the heat dissipation power board 1 through the connection hole 8 inside the connection post 7. In actual use, the heat dissipation power board 1 and the heat dissipation control board 2 are both made of metal materials or ceramic materials with good heat dissipation effects. The internal heat dissipation control board heating element 401 and the heat dissipation power board heating element 402 are continuously heated. The heat dissipation power board heat sink 301 and the heat dissipation control board heat sink 302 are both flexible heat conductors. The heat sink is in contact with the heating element, so that after the electronic component 4 is heated, it will be quickly cooled by the heat conductor from two directions at the first time, and the heat dissipation area is doubled, from the original one-direction heat conduction to two-direction heat conduction, so that the heat conduction rate of the heating parts is higher and the heat dissipation is faster, which makes the service life of the protection board longer and the quality is improved.

[0027] The heat sink 301 of the heat dissipation control board is fixedly installed in the middle of the horizontal axis of the heat dissipation control board 2, and the heat dissipation power board heat sink 302 is fixedly installed at both ends of the heat dissipation power board 1. The heat dissipation control board heat sink 301 and the heat dissipation power board heat sink 302 are both against the outer surface of the electronic component 4. The heat sink transfers the temperature of the heat-generating parts to the heat dissipation power board 1 and the heat dissipation control board 2, which increases the volume of the heat dissipation board in disguised form, makes the heat dissipation rate faster, and improves the heat dissipation effect;

[0028] The heat dissipation control board 2 is electrically connected to the heat dissipation power board 1 .

[0029] The electronic component 4 includes a heat dissipation control board heating element 401 and a heat dissipation power board heating element 402;

[0030] The heat dissipation control board heating element 401 is fixedly installed at both ends of the heat dissipation control board 2 , and the heat dissipation power board heating element 402 is fixedly installed at the middle of the horizontal axis of the heat dissipation power board 1 .

[0031] Multiple groups of connecting columns 7 are fixedly installed on both sides of the heat dissipation control board 2. The other ends of the connecting columns 7 are fixedly connected to the heat dissipation power board 1. Connecting holes 8 are opened inside the connecting columns 7, and the connecting holes 8 pass through the connecting columns 7 and the heat dissipation control board 2.

[0032] A needle holder 10 is fixedly mounted on one side of the heat dissipation control board 2 .

[0033] A pin 9 is fixedly installed on one side of the heat dissipation power board 1, and the pin 9 is movably inserted into the inside of the needle seat 10. A terminal 6 is fixedly installed on the outer surface of the heat dissipation power board 1. A wiring plug 5 is fixedly installed on one side of the heat dissipation control board 2, and the terminal 6 is diagonally fixedly installed on both sides of the heat dissipation power board 1.

[0034] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A lithium battery protection board structure with balanced heat dissipation, comprising a heat dissipation power board (1) and a heat dissipation control board (2), wherein an electronic component (4) is fixedly mounted on a surface of the heat dissipation power board (1) in contact with the heat dissipation control board (2), characterized in that: The heat dissipation power plate (1) and the heat dissipation control plate (2) are provided with a heat conduction mechanism (3), and the heat conduction mechanism (3) comprises a heat dissipation control plate heat dissipation body (301) and a heat dissipation power plate heat dissipation body (302); The heat dissipation control board heat sink (301) is fixedly mounted at the middle of the horizontal axis of the heat dissipation control board (2), and the heat dissipation power board heat sink (302) is fixedly mounted at both ends of the heat dissipation power board (1), and both the heat dissipation control board heat sink (301) and the heat dissipation power board heat sink (302) are in contact with the outer surface of the electronic component (4); The heat dissipation control board (2) is electrically connected to the heat dissipation power board (1).

2. The heat dissipation balanced lithium battery protection board structure according to claim 1, characterized in that: The electronic component (4) comprises a heat dissipation control board heating element (401) and a heat dissipation power board heating element (402); The heat dissipation control plate heating element (401) is fixedly mounted on both ends of the heat dissipation control plate (2), and the heat dissipation power plate heating element (402) is fixedly mounted on the middle of the horizontal axis of the heat dissipation power plate (1).

3. The heat dissipation balanced lithium battery protection board structure according to claim 1, characterized in that: A plurality of groups of connection columns (7) are fixedly mounted on both sides of the heat dissipation control plate (2); the other ends of the connection columns (7) are fixedly connected to the heat dissipation power plate (1); connection holes (8) are provided inside the connection columns (7); and the connection holes (8) penetrate the connection columns (7) and the heat dissipation control plate (2).

4. The heat dissipation balanced lithium battery protection board structure according to claim 1, characterized in that: A needle seat (10) is fixedly mounted on one side of the heat dissipation control plate (2).

5. The heat dissipation balanced lithium battery protection board structure according to claim 1, characterized in that: A pin (9) is fixedly mounted on one side of the heat dissipation power plate (1), and the pin (9) is movably plugged into the interior of the pin seat (10).

6. The heat dissipation balanced lithium battery protection board structure according to claim 1, characterized in that: A terminal post (6) is fixedly mounted on the outer surface of the heat dissipation power plate (1).

7. The heat dissipation balanced lithium battery protection board structure according to claim 1, characterized in that: A wiring plug (5) is fixedly mounted on one side of the heat dissipation control plate (2).

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