4S battery protection board

Abstract

The utility model relates to the technical field of battery protection plates, in particular to a 4S battery protection plate which comprises a protection plate body, and a detection mechanism is arranged in the protection plate body. The detection mechanism comprises a terminal piece fixedly connected to the top of the protection plate body, a sampling resistor is fixedly connected to the position, below the terminal piece, in the protection plate body, a microcontroller is arranged at the position, on the right side of the sampling resistor, in the protection plate body, and a heat conduction plate is fixedly connected to the top of the protection plate body; the 4S battery protection plate comprises a protection plate body, a heat conduction plate is arranged in the protection plate body, a heat conduction rod is fixedly connected to the bottom of the heat conduction plate and located in the protection plate body, a heat dissipation plate is fixedly connected to the bottom end of the heat conduction rod and located outside the protection plate body, and a heat dissipation groove is formed in the bottom of the heat dissipation plate. The problems that an existing battery protection board cannot detect the current and the voltage of a lithium battery and is inconvenient to use are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery protection boards, in particular to a 4S battery protection board. Background Art

[0002] The battery protection board is a device that protects lithium-ion batteries from overcharge, over-discharge, etc., but the existing battery protection board still has shortcomings. Specifically, the existing battery protection board cannot detect the current and voltage of the lithium battery, which is inconvenient to use.

[0003] Therefore, a 4S battery protection board is needed to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to provide a 4S battery protection board to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A 4S battery protection board, comprising a protection board body, wherein a detection mechanism is arranged inside the protection board body;

[0007] The detection mechanism includes a terminal piece fixedly connected to the top of the protection plate body, a sampling resistor is fixedly connected inside the protection plate body and below the terminal piece, a microcontroller is arranged inside the protection plate body and on the right side of the sampling resistor, a heat conducting plate is fixedly connected to the top of the protection plate body, a heat transfer rod is fixedly connected to the bottom of the heat conducting plate and inside the protection plate body, a heat sink is fixedly connected to the bottom end of the heat transfer rod and outside the protection plate body, a heat sink is provided at the bottom of the heat sink, a display screen is installed on the front of the protection plate body, and a terminal is installed on the outer wall of the protection plate body and near the display screen.

[0008] As a preferred solution of the utility model, the protection plate body is made of ABS plastic, and the outer wall of the protection plate body is sprayed with insulating paint.

[0009] As a preferred solution of the utility model, the terminal piece and the heat sink are both made of copper, and the terminal piece, the sampling resistor, the display screen, and the connection between the terminal and the microcontroller are all electrically connected.

[0010] As a preferred solution of the utility model, the heat conducting plate and the heat transfer rod are both made of graphene, and the shapes of the heat conducting plate and the heat dissipating plate are adapted to the shape of the protection plate body.

[0011] As a preferred solution of the utility model, the heat transfer rods, terminal pieces and sampling resistors are provided in multiple groups, and the heat transfer rods all penetrate and extend outside the protection plate body.

[0012] As a preferred solution of the utility model, the heat dissipation groove is designed as a semicircular structure, and the connection method between the heat dissipation plate and the protection plate body is a fixed connection.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. In the utility model, a 4S battery protection board is designed, and the detection mechanism in the device is used to detect current and voltage. A lithium battery is placed in the protection board body, and an operator uses a wire to connect the wiring terminal to the battery pack controller. When the lithium battery is charged and discharged, the charging and discharging current of the lithium battery will flow into the sampling resistor through the wiring terminal sheet, and the microcontroller measures the charging and discharging current value of the lithium battery through the sampling resistor. The microcontroller inputs the charging and discharging value of the lithium battery and displays it on the display screen. At the same time, the microcontroller inputs the detection data into the battery pack controller through the wiring terminal, which solves the problem that the existing battery protection board cannot detect the current and voltage of the lithium battery and is inconvenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 This is a front cross-sectional view of the utility model;

[0017] Figure 3 For this utility model Figure 2 Enlarged view of point A in the middle.

[0018] In the figure: 1. protection board body; 2. detection mechanism; 201. terminal piece; 202. sampling resistor; 203. microcontroller; 204. heat conducting plate; 205. heat transfer rod; 206. heat sink; 207. heat sink; 208. display screen; 209. terminal. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0021] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may also be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may also be a central element. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0023] For examples, see Figure 1-3 , the utility model provides a technical solution:

[0024] A 4S battery protection board comprises a protection board body 1, wherein a detection mechanism 2 is arranged inside the protection board body 1;

[0025] The protection plate body 1 is made of ABS plastic, and the outer wall of the protection plate body 1 is sprayed with insulating paint;

[0026] In this embodiment, reference Figure 2 and Figure 3 The detection mechanism 2 includes a terminal piece 201 fixedly connected to the top of the protection board body 1, a sampling resistor 202 is fixedly connected inside the protection board body 1 and below the terminal piece 201, a microcontroller 203 is arranged inside the protection board body 1 and on the right side of the sampling resistor 202, a heat conducting plate 204 is fixedly connected to the top of the protection board body 1, a heat transfer rod 205 is fixedly connected to the bottom of the heat conducting plate 204 and inside the protection board body 1, a heat dissipation plate 206 is fixedly connected to the bottom end of the heat transfer rod 205 and outside the protection board body 1, a heat dissipation groove 207 is provided at the bottom of the heat dissipation plate 206, a display screen 208 is installed on the front of the protection board body 1, and a terminal 209 is installed on the outer wall of the protection board body 1 and near the display screen 208;

[0027] The terminal piece 201 and the heat sink 206 are made of copper. The terminal piece 201, the sampling resistor 202, the display screen 208 and the terminal 209 are all electrically connected to the microcontroller 203. The heat conducting plate 204 and the heat transfer rod 205 are all made of graphene. The shapes of the heat conducting plate 204 and the heat sink 206 are adapted to the shape of the protection plate body 1. The heat transfer rod 205, the terminal piece 201 and the sampling resistor 202 are all provided with multiple groups. The heat transfer rod 205 penetrates and extends to the outside of the protection plate body 1. The heat dissipation groove 207 is designed as a semicircular structure. The heat sink 206 is fixedly connected to the protection plate body 1. The operator uses a wire to connect the terminal 209 to the battery pack controller. When the lithium battery is charged and discharged The charge and discharge current of the lithium battery will flow into the sampling resistor 202 through the terminal piece 201. The microcontroller 203 measures the charge and discharge current value of the lithium battery through the sampling resistor 202. The microcontroller 203 inputs the charge and discharge value of the lithium battery and displays it on the display screen 208. At the same time, the microcontroller 203 inputs the detection data into the battery pack controller through the terminal 209. The heat generated during the charge and discharge of the lithium battery is transferred to the heat transfer rod 205 through the heat conduction plate 204, and the heat is transferred to the heat sink 206 through the heat transfer rod 205. The heat sink 206 made of copper has a high thermal conductivity coefficient, and the heat dissipation groove 207 at the bottom of the heat sink 206 can increase the contact area with the air, so that the heat in the heat sink 206 can be quickly dissipated into the air.

[0028] Working process of the utility model: when the 4S battery protection board designed by the present invention is in operation, the lithium battery is placed in the protection board body 1, and the operator uses a wire to connect the terminal 209 with the battery pack controller. When the lithium battery is charged and discharged, the charging and discharging current of the lithium battery will flow into the sampling resistor 202 through the terminal piece 201, and the microcontroller 203 measures the charging and discharging current value of the lithium battery through the sampling resistor 202. The microcontroller 203 inputs the charging and discharging value of the lithium battery and displays it on the display screen 208. At the same time, the microcontroller 203 inputs the detection data into the battery pack controller through the terminal 209. The heat generated when the lithium battery is charged and discharged is transferred to the heat transfer rod 205 through the heat conduction plate 204, and the heat is transferred to the heat sink 206 through the heat transfer rod 205. The heat sink 206 made of copper has a high thermal conductivity, and the heat dissipation groove 207 at the bottom of the heat sink 206 can increase the contact area with the air, so that the heat in the heat sink 206 can be quickly dissipated into the air.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A 4S battery protection board, comprising a protection board body (1), characterized in that: A detection mechanism (2) is provided inside the protection plate body (1); The detection mechanism (2) comprises a terminal piece (201) fixedly connected to the top of the protection plate body (1); a sampling resistor (202) is fixedly connected inside the protection plate body (1) and below the terminal piece (201); a microcontroller (203) is arranged inside the protection plate body (1) and on the right side of the sampling resistor (202); a heat conducting plate (204) is fixedly connected to the top of the protection plate body (1); a heat transfer rod (205) is fixedly connected to the bottom of the heat conducting plate (204) and inside the protection plate body (1); a heat dissipation plate (206) is fixedly connected to the bottom end of the heat transfer rod (205) and outside the protection plate body (1); a heat dissipation groove (207) is provided at the bottom of the heat dissipation plate (206); a display screen (208) is installed on the front of the protection plate body (1); and a connection terminal (209) is installed on the outer wall of the protection plate body (1) and near the display screen (208).

2. A 4S battery protection board according to claim 1, characterized in that: The protection plate body (1) is made of ABS plastic, and the outer wall of the protection plate body (1) is sprayed with insulating paint.

3. A 4S battery protection board according to claim 1, characterized in that: The terminal piece (201) and the heat sink (206) are both made of red copper, and the terminal piece (201), the sampling resistor (202), the display screen (208) and the terminal block (209) are all electrically connected to the microcontroller (203).

4. A 4S battery protection board according to claim 1, characterized in that: The heat conducting plate (204) and the heat transfer rod (205) are both made of graphene, and the shapes of the heat conducting plate (204) and the heat dissipation plate (206) are compatible with the shape of the protection plate body (1).

5. A 4S battery protection board according to claim 1, characterized in that: The heat transfer rods (205), the terminal pieces (201) and the sampling resistors (202) are all provided in multiple groups, and the heat transfer rods (205) all penetrate and extend outside the protection plate body (1).

6. A 4S battery protection board according to claim 1, characterized in that: The heat dissipation groove (207) is designed as a semicircular structure, and the heat dissipation plate (206) and the protection plate body (1) are connected in a fixed manner.

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