Efficient and safe electric tool lithium battery pack

Abstract

The utility model discloses an efficient and safe electric tool lithium battery pack, which belongs to the technical field of lithium battery packs and comprises a fixed shell, a shell top cover is arranged at the top of the fixed shell, and a lithium battery pack connecting box is arranged in the fixed shell. According to the utility model, the motor in the heat dissipation assembly drives the heat dissipation fan to rotate, so that the flow of air in the battery pack can be effectively promoted, and the air circulates through the ventilation openings of the honeycomb grooves in the lithium battery pack connecting box and the ventilation nets at the two sides and the bottom of the fixed shell, so that heat generated in the charging and discharging process of the lithium ion battery core is quickly taken away; therefore, uniform distribution of the temperature in the battery pack is ensured, the local overheating phenomenon is avoided, the use requirements of the electric tool under various complex working conditions can be better met, the working reliability and stability of the electric tool are improved, the effects of buffering and protecting the battery cell are achieved to a certain extent, and the service life of the battery pack is prolonged. And the damage to the battery cell caused by external force impact or vibration is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to lithium battery pack technical field, concretely relates to a kind of high-efficiency safe electric tool lithium battery pack. BACKGROUND

[0002] With the increasing demand of modern industry and daily life for electric tool, the performance and portability of electric tool are increasingly improved, and electric tool is widely used in building, decoration, manufacturing, gardening and many other fields, and the diversity and complexity of its use scene make the requirement of its power source battery pack more strict, users not only expect electric tool to have higher power and longer endurance time to meet the long-time and high-intensity work demand, but also require battery pack to have fast charging capacity to reduce waiting time in work and improve work efficiency.

[0003] The existing lithium battery pack stores more electric energy by multiple lithium ion cells when working, and the cells release a large amount of heat energy when working, the traditional battery pack cooling method has the problem of local overheating, it is difficult to carry out fixed-point cooling on the gap of lithium ion cells, thereby easily affecting the use of cells and further affecting the service life of lithium battery pack, therefore a kind of high-efficiency safe electric tool lithium battery pack is needed to solve the above problems. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of high-efficiency safe electric tool lithium battery pack to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of high-efficiency safe electric tool lithium battery pack, including fixed shell, the top of the fixed shell is equipped with shell top cover, the inside of the fixed shell is equipped with lithium battery pack connecting box, the inside of the shell top cover is equipped with heat dissipation assembly, the lithium battery pack connecting box is equipped with honeycomb groove, the top of the lithium battery pack connecting box is equipped with baffle, the outer wall of the honeycomb groove is equipped with vent, the heat dissipation assembly includes motor box, the inside of the motor box is equipped with motor, and the output end of the motor is equipped with cooling fan.

[0006] As a preferred embodiment, the number of the baffle is two, the filter screen is arranged on the two baffles, the inner wall between the filter screens is equipped with drying agent, and the two baffles are connected with the top and bottom of the shell top cover respectively.

[0007] As a preferred embodiment, the two sides of the fixed shell are equipped with ventilation net, the inner wall of the ventilation net is equipped with drying agent, the bottom of the fixed shell is equipped with clamping plate, the clamping plate is equipped with ventilation net in the middle, and the number of the ventilation net is three.

[0008] As a preferred implementation, the lithium battery connection box is internally provided with lithium ion cells, the number of the lithium ion cells is several, and the lithium battery connection box is provided with a honeycomb groove separately from the connection part of the lithium ion cells, and the outer wall of the honeycomb groove is provided with a ventilation opening.

[0009] As a preferred implementation, one bottom of the partition plate is connected with one end of the motor box, and the top of the shell top cover is provided with eight protective plates made of elastic metal plates.

[0010] As a preferred implementation, one end of the fixed shell is provided with a charging port, and the outer side of the charging port is provided with an opening and closing door.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] The utility model discloses a motor drives the rotation of the heat dissipation fan in the heat dissipation assembly, can effectively promote the flow of the air in the battery pack, and the air circulates through the ventilation opening of the honeycomb groove on the lithium battery connection box and the ventilation net on the two sides and the bottom of the fixed shell, quickly takes away the heat generated in the charging and discharging process of the lithium ion cell, thereby ensuring that the temperature in the battery pack is evenly distributed, avoiding the occurrence of local overheating, better adapting to the use demand of the electric tool under various complex working conditions, improving the working reliability and stability of the electric tool, and the combined design of the honeycomb groove and the ventilation opening can also enhance the structural strength of the battery pack, to a certain extent, play the role of buffering and protecting the cell, and reduce the damage of external force impact or vibration to the cell.

[0013] The utility model discloses a motor drives the rotation of the heat dissipation fan in the heat dissipation assembly, can effectively promote the flow of the air in the battery pack, and the air circulates through the ventilation opening of the honeycomb groove on the lithium battery connection box and the ventilation net on the two sides and the bottom of the fixed shell, quickly takes away the heat generated in the charging and discharging process of the lithium ion cell, thereby ensuring that the temperature in the battery pack is evenly distributed, avoiding the occurrence of local overheating, better adapting to the use demand of the electric tool under various complex working conditions, improving the working reliability and stability of the electric tool, and the combined design of the honeycomb groove and the ventilation opening can also enhance the structural strength of the battery pack, to a certain extent, play the role of buffering and protecting the cell, and reduce the damage of external force impact or vibration to the cell. ACCURACY

[0014] Figure 1 It is the schematic diagram of the lithium battery pack main body solid structure of the utility model;

[0015] Figure 2 It is the schematic diagram of the lithium battery pack main body section solid structure of the utility model;

[0016] Figure 3 It is the schematic diagram of the three-dimensional structure of the fixed shell of the utility model;

[0017] Figure 4 It is the schematic diagram of the three-dimensional structure of the lithium battery pack connecting box of the utility model;

[0018] Figure 5 It is the schematic diagram of the three-dimensional structure of the shell top cover of the utility model;

[0019] Figure 6 It is the schematic diagram of the three-dimensional structure of the heat dissipation assembly of the utility model;

[0020] Figure 7 It is the schematic diagram of the three-dimensional structure of the honeycomb groove of the utility model.

[0021] In the drawing: 1, fixed shell;2, shell top cover;3, lithium battery pack connecting box;4, heat dissipation assembly;5, honeycomb groove;6, partition;7, vent;8, guard plate;9, ventilation net;10, lithium ion cell;11, clamping plate;12, charging port;13, opening and closing door;401, motor box;402, motor;403, heat dissipation fan. DETAILED DESCRIPTION

[0022] The utility model will be further described below in combination with examples.

[0023] The following examples are used to illustrate the utility model, but cannot be used to limit the protection scope of the utility model. The conditions in the examples can be further adjusted according to specific conditions, and simple improvement of the method of the utility model under the concept of the utility model belongs to the range of protection required by the utility model.

[0024] Please refer to Figures 1-7 The utility model provides a kind of high-efficient safe electric tool lithium battery pack, including fixed shell 1, the top of fixed shell 1 is equipped with shell top cover 2, the inside of fixed shell 1 is equipped with lithium battery pack connecting box 3, the inside of shell top cover 2 is equipped with heat dissipation assembly 4, is equipped with honeycomb groove 5 on lithium battery pack connecting box 3, the top of lithium battery pack connecting box 3 is equipped with partition 6, the outer wall of honeycomb groove 5 is equipped with vent 7, heat dissipation assembly 4 includes motor box 401, the inside of motor box 401 is equipped with motor 402, the output end of motor 402 is equipped with heat dissipation fan 403, rotates by motor 402 in heat dissipation assembly 4 drive heat dissipation fan 403, can effectively promote the flow of battery pack internal air, air is circulated by vent 7 of honeycomb groove 5 on lithium battery pack connecting box 3 and the ventilation net 9 of the both sides and bottom of fixed shell 1, quickly take away the heat generated in the process of charge and discharge of lithium ion cell.

[0025] The number of the partition plates 6 is two, the filter screen is arranged on the two partition plates 6, and the desiccant is arranged on the inner wall between the filter screens.

[0026] The fixed shell 1 is provided with the ventilation nets 9 on the two sides, the desiccant is arranged on the inner wall of the ventilation nets 9, the fixed shell 1 is provided with the clamping plates 11 on the bottom, the ventilation nets 9 are arranged in the middle of the clamping plates 11, and the number of the ventilation nets 9 is three.

[0027] The lithium battery pack connecting box 3 is internally provided with the lithium ion cells 10, the number of the lithium ion cells 10 is several, the connecting part of the lithium battery pack connecting box 3 and the lithium ion cells 10 is separately provided with the honeycomb grooves 5, and the ventilation openings 7 are arranged on the outer wall of the honeycomb grooves 5.

[0028] One end of the motor box 401 is connected to the bottom of one of the partition plates 6, the top of the shell top cover 2 is provided with the protective plates 8, the number of the protective plates 8 is eight, and the material of the eight protective plates 8 is an elastic metal plate.

[0029] One end of the fixed shell 1 is provided with the charging port 12, the outer side of the charging port 12 is provided with the opening and closing door 13, the double moisture-proof barriers are formed by the filter screens and the desiccants arranged on the partition plates 6 and the desiccants arranged on the inner wall of the ventilation nets 9, the desiccants arranged on the partition plates 6 can absorb the moisture in the air in the battery pack, so that the moisture is prevented from entering the cell area, the honeycomb grooves 5 arranged on the lithium battery pack connecting box 3 not only provide stable mounting positions for the lithium ion cells 10, but also increase the contact area with the air due to the unique structure, the ventilation openings 7 are arranged to further optimize the air circulation path, so that the wind blown by the heat dissipation fan 403 can more evenly blow around each cell, precise heat dissipation is realized on the key parts such as the cell connecting part, the protective plates 8 arranged on the shell top cover 2 are made of an elastic metal plate, so as to provide certain physical protection for the battery pack, the lithium battery pack connecting box 3 provides a special mounting space for the lithium ion cells 10, and the honeycomb grooves 5 are arranged in the connecting part, so that the connection of the cells is more stable, and the charging port 12 arranged at one end of the fixed shell 1 facilitates the user to charge the battery pack.

[0030] The utility model discloses a working principle and use flow: first in lithium battery package work through the motor 402 of heat dissipation assembly 4 in the drive heat dissipation fan 403 rotation, can effectively promote the flow of battery package internal air, then air passes through honeycomb groove 5's vent 7 of lithium battery group connecting box 3 on the fixed shell 1 both sides and bottom's ventilation net 9 and circulates, fast takes away the heat that lithium ion electric core produced in the process of charge and discharge, through the filter screen and drying agent of baffle 6 and drying agent of ventilation net 9 inner wall constitutes double moistureproof barrier, the drying agent of baffle 6 can absorb the moisture in battery package internal air, prevent moisture from entering the electric core area, finally through the protection plate 8 on the shell top cover 2 adopts the elastic metal plate material, can provide certain physical protection for battery package, through lithium battery group connecting box 3 provides the special installation space for lithium ion electric core 10, and is opened honeycomb groove 5 in the connecting part, so that the connection of electric core is more stable, through the charging port 12 of fixed shell 1 one end setting is convenient for user to the battery package and charges the operation.

[0031] Although the embodiments of the utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made thereto without departing from the principles and spirit of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency and safe lithium battery pack for power tools, comprising a fixed outer casing (1), characterized in that: The fixed housing (1) has a housing top cover (2) on its top. The fixed housing (1) has a lithium battery pack connection box (3) inside. The housing top cover (2) has a heat dissipation component (4) inside. The lithium battery pack connection box (3) has a honeycomb groove (5) on its top. The lithium battery pack connection box (3) has a partition (6) on its top. The honeycomb groove (5) has a vent (7) on its outer wall. The heat dissipation component (4) includes a motor box (401). The motor box (401) has a motor (402) inside its top. The output end of the motor (402) has a cooling fan (403).

2. The high-efficiency and safe lithium battery pack for power tools according to claim 1, characterized in that: There are two partitions (6), each of which has a filter screen. A desiccant is provided on the inner wall between the filter screens. The two partitions (6) are respectively connected to the top and bottom of the outer shell top cover (2).

3. The high-efficiency and safe lithium battery pack for power tools according to claim 1, characterized in that: The fixed outer shell (1) is provided with ventilation nets (9) on both sides, and the inner wall of the ventilation nets (9) is provided with desiccant. The bottom of the fixed outer shell (1) is provided with a card plate (11), and the middle of the card plate (11) is provided with ventilation nets (9). The number of ventilation nets (9) is three.

4. The high-efficiency and safe lithium battery pack for power tools according to claim 1, characterized in that: The lithium battery pack connection box (3) is provided with lithium-ion cells (10) inside. The number of lithium-ion cells (10) is several. The connection part between the lithium battery pack connection box (3) and the lithium-ion cells (10) is provided with honeycomb grooves (5). The outer wall of the honeycomb grooves (5) is provided with ventilation openings (7).

5. The high-efficiency and safe lithium battery pack for power tools according to claim 1, characterized in that: One of the partitions (6) is connected at the bottom to one end of the motor box (401), and the top of the outer shell cover (2) is provided with a protective plate (8). There are eight protective plates (8), and the material of the eight protective plates (8) is an elastic metal plate.

6. The high-efficiency and safe lithium battery pack for power tools according to claim 1, characterized in that: One end of the fixed outer shell (1) is provided with a charging port (12), and an opening and closing door (13) is provided on the outside of the charging port (12).

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