Lithium battery pack with good heat dissipation effect

Abstract

The utility model relates to the technical field of lithium batteries, and discloses a lithium battery pack with a good heat dissipation effect, which comprises a box body, a control panel, lithium battery unit blocks and a ventilation partition plate, an air inlet is arranged above the side wall of the box body, two symmetrical air outlets are arranged below the side wall of the box body, and a fan is fixedly arranged at the air inlet of the box body. A motor is fixedly installed on the side wall of the box body, the power end of the motor is fixedly connected with a lead screw, one end of the lead screw is rotationally connected with the inner wall of the box body, and a first guide rod is fixedly installed on the inner wall of the box body. The temperature sensors are used for monitoring the temperature of the multiple compartments in the box body in real time, so that a worker can open the opening and closing assemblies above the lithium battery unit blocks at the high-temperature position according to actual needs, and external cold air can directly and rapidly cool the lithium battery unit blocks in the high-temperature area.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, and more specifically to a lithium battery pack with good heat dissipation effect. Background Art

[0002] A lithium battery pack refers to a battery pack formed by combining multiple individual lithium battery cells in series or parallel. This battery pack is designed to provide a higher voltage, a larger capacity, or a combination of both compared to a single battery cell. Since the temperatures of the battery cells during operation vary, the temperatures in different regions inside the battery pack are also different. However, in the actual use process of the existing heat dissipation device, it cannot quickly dissipate heat from the lithium battery cells at the abnormally high-temperature areas, resulting in the battery pack being easily damaged due to the high temperature in the abnormal areas inside.

[0003] Therefore, in view of this, research and improvement are carried out on the existing structure and deficiencies to provide a lithium battery pack with good heat dissipation effect, in order to achieve a more practical and valuable purpose. Content of the Utility Model

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a lithium battery pack with good heat dissipation effect to solve the problems existing in the above-mentioned background art.

[0005] The utility model provides the following technical solution: A lithium battery pack with good heat dissipation effect, including a box body, a control panel, a lithium battery unit block, and a ventilation partition. An air inlet is opened above the side wall of the box body, and two symmetric air outlets are opened below the side wall. A fan is fixedly installed at the air inlet of the box body. A motor is fixedly installed on the side wall of the box body. The power end of the motor is fixedly connected to a lead screw. One end of the lead screw is rotatably connected to the inner wall of the box body. A first guide rod is fixedly installed on the inner wall of the box body. A movable block is movably connected between the lead screw and the first guide rod. An electric telescopic rod is arranged on the movable block. A second partition is fixedly installed on the inner wall of the box body. The bottom end face of the second partition is fixedly connected to the top end of the ventilation partition. A number of ventilation slots are evenly opened on the upper end face of the second partition. A corresponding number of opening and closing components are evenly installed at the bottom end of the second partition corresponding to the number of ventilation slots. A corresponding number of temperature sensors are evenly installed inside the box body corresponding to the number of opening and closing components.

[0006] Furthermore, the opening and closing component includes two mutually separated second guide rods. The second guide rods are fixedly connected to the bottom end face of the second partition. Limit blocks are fixedly installed at the bottom end of the fan. Sliding blocks are slidably installed on the outer sides of the second guide rods. Springs are installed between the sliding blocks and the limit blocks. A closing plate is fixedly connected between the two sliding blocks.

[0007] Further, inclined guide plates are fixedly installed on both sides of the ventilation grooves of the box body. The guide plates are used to guide the airflow passing through the ventilation grooves of the second partition plate, so that the airflow can be aligned with the series connection points at the upper ends of the lithium battery unit blocks, thereby quickly cooling them.

[0008] Further, sealing gaskets are fixedly installed on the upper end surfaces of the opening and closing plates. The sealing gaskets are in movable contact with the bottom end surface of the second partition plate. By means of the sealing gaskets, the airtightness between the opening and closing plates and the second partition plate is improved, so as to ensure that the airflow can cool the lithium battery unit blocks at the high-temperature parts as much as possible.

[0009] Further, filter meshes are fixedly installed on the inner walls of the air inlet and outlet of the box body. The entering gas into the box body is filtered by the filter meshes, thereby reducing the possibility of dust and water vapor in the air entering the box body.

[0010] Further, a push block is fixedly installed at the penetrating end of the electric telescopic rod. The push block is in movable contact with the opening and closing plate. By means of the push block, the contact area between the electric telescopic rod and the opening and closing plate is increased, thereby improving the moving stability of the opening and closing plate.

[0011] The technical effects and advantages of the present utility model are as follows:

[0012] 1. By providing the second partition plate, the fan, the motor, the lead screw, the first guide rod, the movable block, the electric telescopic rod, and the opening and closing assembly, during use, the temperature sensors are used to monitor the temperatures of multiple compartments inside the box body in real time, enabling the staff to open the opening and closing assembly above the lithium battery unit blocks in the high-temperature area according to actual needs, so that the outside cold air can directly cool the lithium battery unit blocks in the high-temperature area quickly, greatly improving the practicability of the device.

[0013] 2. By providing the guide plates, during use, the guide plates are used to guide the airflow passing through the ventilation grooves of the second partition plate, so that the airflow can be aligned with the series connection points at the upper ends of the lithium battery unit blocks, thereby quickly cooling them, greatly improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic cross-sectional structure diagram of the present utility model.

[0015] Figure 2 is the Figure 1 partial enlarged structure diagram at A in the present utility model.

[0016] Figure 3 is the structure diagram of the present utility model.

[0017] Figure 4 is the structure diagram of the opening and closing assembly of the present utility model.

[0018] Figure 5 Schematic diagram of the connection structure of the opening and closing plate of the present utility model.

[0019] Reference numerals are: 100, box body; 101, control panel; 102, lithium battery unit block; 103, temperature sensor; 104, ventilation partition; 110, partition two; 112, fan; 113, motor; 114, lead screw; 115, guide rod one; 116, movable block; 117, electric telescopic rod; 118, push block; 119, opening and closing assembly; 120, guide rod two; 121, limit block; 122, sliding block; 123, spring; 124, opening and closing plate; 125, guide plate; 126, gasket; 130, filter screen. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0021] Embodiment 1: Please refer to Figures 1-5 , a lithium battery pack with good heat dissipation provided by the present utility model includes a box body 100, a control panel 101, a lithium battery unit block 102, and a ventilation partition 104. An air inlet is provided above the side wall of the box body 100, and two symmetric air outlets are provided below the side wall. A fan 112 is fixedly installed at the air inlet of the box body 100, a motor 113 is fixedly installed on the side wall of the box body 100, the power end of the motor 113 is fixedly connected to a lead screw 114, one end of the lead screw 114 is rotatably connected to the inner wall of the box body 100, a guide rod one 115 is fixedly installed on the inner wall of the box body 100, a movable block 116 is movably connected between the lead screw 114 and the guide rod one 115, an electric telescopic rod 117 is provided on the movable block 116, a partition two 110 is fixedly installed on the inner wall of the box body 100, the bottom end surface of the partition two 110 is fixedly connected to the top end of the ventilation partition 104, a number of ventilation slots are evenly provided on the upper end surface of the partition two 110, a corresponding number of opening and closing assemblies 119 are evenly installed at the bottom end of the partition two 110, and a corresponding number of temperature sensors 103 are evenly installed inside the box body 100 corresponding to the number of the opening and closing assemblies 119.

[0022] Working principle: When in use, the temperature sensor 103 is used to detect the temperature of the inner compartment of the box body 100. When it is detected that the temperature of the lithium battery unit block 102 in the compartment is too high, the motor 113 is controlled to start, and the lead screw 114 is driven to rotate by the motor 113. After the lead screw 114 rotates, the movable block 116 connected to the outside of the lead screw 114 by threads will move under the guidance of the first guide rod 115. When the movable block 116 moves above the high-temperature lithium battery unit block 102, the lower opening and closing plate 124 is pushed by the telescopic movement of the electric telescopic rod 117. Then, the fan 112 is controlled to start, and the external cold air is drawn into the box body 100. At this time, the air flow will enter the space separated by the ventilation partition 104 inside the box body 100 through the ventilation slots on the second partition 110, so as to take away the heat of the lithium battery unit block 102 at the high-temperature part. The hot air flow will be discharged through the ventilation holes on the ventilation partition 104 and the air outlet on the side wall of the box body 100.

[0023] Embodiment 2:

[0024] The difference between Embodiment 2 and Embodiment 1 is that the opening and closing assembly 119 includes two guide rods 120 away from each other. The guide rods 120 are both fixedly connected to the bottom end face of the second partition 110. Limit blocks 121 are fixedly installed at the bottom ends of the fans 112. Sliding blocks 122 are slidably installed on the outside of the guide rods 120. Springs 123 are installed between the sliding blocks 122 and the limit blocks 121. An opening and closing plate 124 is fixedly connected between the two sliding blocks 122. Inclined guide plates 125 are fixedly installed on both sides of the ventilation slots of the box body 100. Sealing gaskets 126 are fixedly installed on the upper end faces of the opening and closing plates 124. The sealing gaskets 126 are movably abutted against the bottom end face of the second partition 110. Filter meshes 130 are fixedly installed on the inner walls of the air inlet and air outlet of the box body 100. A push block 118 is fixedly installed at the penetrating end of the electric telescopic rod 117. The push block 118 is movably abutted against the opening and closing plate 124. When in use, when the push block 118 on the electric telescopic rod 117 pushes the opening and closing plate 124, the sliding blocks 122 on the side wall of the opening and closing plate 124 will push the spring 123 to compress. When the temperature drops, the push block 118 is separated from the opening and closing plate 124. At this time, the restoring force of the spring 123 will reset the opening and closing plate 124 through the sliding block 122, so as to block the ventilation slots on the second partition 110. The airtightness of the blockage is improved through the sealing gasket 126. The air flow passing through the ventilation slots is guided through the guide plate 125 so that it is aligned with the connection part above the lithium battery unit block 102, so as to quickly cool down the lithium battery unit block 102. The air entering the box body 100 is filtered through the filter mesh 130.

[0025] Finally: The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A lithium battery pack with good heat dissipation effect, comprising a box (100), a control panel (101), a lithium battery unit block (102), and a ventilation baffle (104), wherein an air inlet is provided above the side wall of the box (100), and two symmetrical air outlets are provided below the side wall, characterized in that: A fan (112) is fixedly installed at the air inlet of the box (100), a motor (113) is fixedly installed on the side wall of the box (100), a power end of the motor (113) is fixedly connected to a screw rod (114), one end of the screw rod (114) is rotatably connected to the inner wall of the box (100), a guide rod (115) is fixedly installed on the inner wall of the box (100), a movable block (116) is movably connected between the screw rod (114) and the guide rod (115), and the movable block (116) is An electric telescopic rod (117) is provided, a partition plate 2 (110) is fixedly installed on the inner wall of the box body (100), the bottom end surface of the partition plate 2 (110) is fixedly connected to the top end of the ventilation partition plate (104), a number of ventilation grooves are evenly opened on the upper end surface of the partition plate 2 (110), opening and closing components (119) corresponding to the number of ventilation grooves are evenly installed on the bottom end of the partition plate 2 (110), and temperature sensors (103) corresponding to the number of opening and closing components (119) are evenly installed inside the box body (100).

2. A lithium battery pack with good heat dissipation effect according to claim 1, characterized in that: The opening and closing assembly (119) comprises two guide rods (120) that are spaced apart from each other. The guide rods (120) are fixedly connected to the bottom end surface of the partition plate (110). A limit block (121) is fixedly installed at the bottom end of the fan (112). A sliding block (122) is slidably installed on the outer side of the guide rods (120). A spring (123) is installed between the sliding block (122) and the limit block (121). An opening and closing plate (124) is fixedly connected between the two sliding blocks (122).

3. A lithium battery pack with good heat dissipation effect according to claim 1, characterized in that: Inclined guide plates (125) are fixedly mounted on both sides of the ventilation groove of the box body (100).

4. A lithium battery pack with good heat dissipation effect according to claim 2, characterized in that: The upper end surface of the opening and closing plate (124) is fixedly mounted with a sealing gasket (126), and the sealing gasket (126) movably contacts the bottom end surface of the second partition plate (110).

5. A lithium battery pack with good heat dissipation effect according to claim 1, characterized in that: Filter screens (130) are fixedly mounted on the inner walls of the air inlet and the air outlet of the box (100).

6. A lithium battery pack with good heat dissipation effect according to claim 2, characterized in that: A push block (118) is fixedly mounted on the through end of the electric telescopic rod (117), and the push block (118) movably contacts the opening and closing plate (124).

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