Wide temperature lithium ion battery pack

Abstract

The utility model relates to lithium ion battery pack technical field discloses a wide temperature lithium ion battery pack, including bottom plate, the bottom plate top fixedly connected with lithium ion battery pack and a plurality of fixed blocks, each fixed block inside all fixedly connected with a plurality of electric push rod, each electric push rod output stem all fixedly connected with the connecting plate, one side fixedly connected with heating cover no.

Description

Technical Field

[0001] This utility model relates to the field of lithium-ion battery packs, and in particular to a wide-temperature lithium-ion battery pack. Background Technology

[0002] With the rapid development of new energy technologies, lithium-ion battery packs, as core components of energy storage, are widely used in electric vehicles, energy storage power stations, and portable electronic devices. However, the performance of lithium-ion batteries is extremely sensitive to ambient temperature; excessively high or low operating temperatures can significantly affect their charge-discharge efficiency, cycle life, and safety. Therefore, developing efficient and reliable battery pack temperature control technology is crucial to ensuring stable equipment operation.

[0003] Currently, most common lithium-ion battery pack temperature control technologies employ passive heat dissipation or simple heating measures. For example, some devices use heat sinks on the surface of the battery pack to achieve natural heat dissipation through air convection; or, in low-temperature environments, they use heating films to locally heat the battery pack. These technologies mainly rely on the thermal conductivity of the materials themselves or simple electric heating principles to regulate the battery pack temperature through physical contact or heat conduction.

[0004] However, existing temperature control technologies struggle to achieve precise temperature control of lithium-ion battery packs. When ambient temperature changes drastically, the natural convection efficiency of traditional heat sinks is limited, failing to quickly reduce the battery pack temperature, while heating films also lack precise temperature regulation capabilities. This imprecision in temperature control easily leads to performance degradation and thermal runaway risks in lithium-ion battery packs at high temperatures, and decreased charge / discharge efficiency and damage to the internal battery structure at low temperatures. This severely restricts the reliability and lifespan of battery packs in complex environments. Therefore, a wide-temperature lithium-ion battery pack is proposed to address these issues. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a wide-temperature lithium-ion battery pack, which aims to improve the problems of performance degradation, operation obstruction, and even internal structural damage caused by excessively high or low ambient temperatures in traditional lithium-ion battery packs.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A wide-temperature lithium-ion battery pack includes a base plate. A lithium-ion battery pack and multiple fixing blocks are fixedly connected to the top of the base plate. Multiple electric push rods are fixedly connected inside each fixing block. Each electric push rod output rod is fixedly connected to a connecting plate. A heating cover is fixedly connected to one side of one of the connecting plates. A heating component is disposed inside the heating cover. A metal cooling cover is fixedly connected to one side of the other connecting plate. A groove is formed inside the metal cooling cover. A cooling component is disposed inside the metal cooling cover.

[0008] As a further description of the above technical solution:

[0009] A heat insulation plate is provided on one side of the heating cover, and a metal heat dissipation plate is provided on one side of the metal cooling cover. The bottom of the heat insulation plate and the metal heat dissipation plate are fixedly connected to the top of the fixing block.

[0010] As a further description of the above technical solution:

[0011] The heating component includes a power source, one side of which is fixedly connected to the outer wall of the heating cover and connected via an electric wire.

[0012] As a further description of the above technical solution:

[0013] A second heating cover is fixedly connected to one side of the first heating cover, and the power source is located on the inner wall of the second heating cover.

[0014] As a further description of the above technical solution:

[0015] The cooling component includes a cooling pipe, one side of which is fixedly connected to the outer wall of the metal cooling cover, and a small circulating pump is fixedly connected to one side of the metal cooling cover.

[0016] As a further description of the above technical solution:

[0017] Both ends of the cooling pipe are fixedly threaded with connecting cylinders, and multiple connecting cylinders are connected to the input and output ends of the small circulating pump through flexible hoses.

[0018] As a further description of the above technical solution:

[0019] Each of the metal cooling shrouds and heating shrouds has a T-shaped slider fixedly connected to both sides of its bottom, and multiple T-shaped sliders are slidably connected to the inner wall of the top groove of the base plate.

[0020] This utility model has the following beneficial effects:

[0021] In this invention, by setting up a heating cover and a metal cooling cover driven by multiple electric push rods, and in conjunction with heating and cooling components, precise control of heating or cooling of the lithium-ion battery pack is achieved. This effectively solves the technical problem that traditional lithium-ion battery packs suffer from performance degradation, operational obstruction, or even internal structural damage due to excessively high or low ambient temperatures. It enhances the battery pack's adaptability and reliability to complex environments such as high and low temperatures, ensuring that it maintains a highly efficient and stable working state under different operating conditions, thereby effectively improving the overall performance of the battery pack and extending its service life. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of a wide-temperature lithium-ion battery pack proposed in this utility model;

[0023] Figure 2 This is a schematic diagram of the heating cover structure of a wide-temperature lithium-ion battery pack proposed in this utility model;

[0024] Figure 3 This is a schematic diagram of a T-shaped slider structure for a wide-temperature lithium-ion battery pack proposed in this utility model;

[0025] Figure 4 This is a schematic diagram of the cooling pipe structure of a wide-temperature lithium-ion battery pack proposed in this utility model;

[0026] Figure 5 This is a schematic diagram of the metal cooling cover structure of a wide-temperature lithium-ion battery pack proposed in this utility model.

[0027] Legend:

[0028] 1. Base plate; 2. Fixing block; 3. Multi-section electric push rod; 4. Connecting plate; 5. Metal cooling cover; 6. Heating cover one; 7. Insulation plate; 8. Metal heat sink; 9. Lithium-ion battery pack; 10. Heating cover two; 11. Power supply; 12. T-shaped slider; 13. Small circulating pump; 14. Connecting cylinder; 15. Cooling pipe; 16. Groove. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Reference Figures 1-5This utility model provides an embodiment of a wide-temperature lithium-ion battery pack, including a base plate 1. A lithium-ion battery pack 9 and multiple fixing blocks 2 are fixedly connected to the top of the base plate 1. The base plate 1 provides a stable mounting base for the entire device, ensuring the structural stability. Each fixing block 2 has multiple electric push rods 3 fixedly connected inside, which provide stable support for the electric push rods 3. Each electric push rod 3 has a connecting plate 4 fixedly connected to its output rod. The electric push rods 3 serve as a power source to drive the connecting plate 4 to extend and retract, thereby moving the heating cover 6 or the metal cooling cover 5, achieving the effect of automatically controlling the opening and closing of the temperature regulation structure. One side of one of the connecting plates 4 is fixedly connected to the heating cover 6. The connecting plate 4 is used to transmit the thrust of the multi-section electric push rod 3. A heating element is installed inside the heating cover 6. This heating cover 6 is used to wrap the lithium-ion battery pack 9 during heating, forming a closed heating space, achieving concentrated heat and efficient heating. The heating element generates heat energy to provide necessary temperature protection for the battery pack operating in low-temperature environments. A metal cooling cover 5 is fixedly connected to one side of another connecting plate 4. A groove 16 is provided inside the metal cooling cover 5. This groove 16 is designed to match the shape of the lithium-ion battery pack 9, ensuring a tight fit when the cooling cover is closed, increasing the heat exchange contact area. A cooling element is installed inside the metal cooling cover 5. This metal cooling cover 5 utilizes the excellent thermal conductivity of its metal material to cool the battery pack. The cooling effect generated by the heating element is evenly transferred to the lithium-ion battery pack 9, achieving rapid cooling. The cooling element continuously removes heat, ensuring the safe and stable operation of the battery pack under high-temperature conditions. An insulation plate 7 is provided on one side of the heating cover 6. This insulation plate 7, together with the moving heating cover 6, forms a complete enclosure structure for the lithium-ion battery pack 9, providing insulation and sealing to prevent heat loss. A metal heat sink 8 is provided on one side of the metal cooling cover 5. This metal heat sink 8, together with the metal cooling cover 5, encloses the lithium-ion battery pack 9. Its metal material also helps to conduct some of the heat from the battery pack, assisting in heat dissipation. The insulation plate 7 and the metal heat sink 8 are fixedly connected to the top of the fixing block 2. The heating element includes a power supply. 11. The power supply 11, as the core component of the electrothermal conversion, provides electrical energy and converts it into heat energy. One side of the power supply 11 is fixedly connected to the outer wall of the heating cover 6 and connected via wires. A second heating cover 10 is fixedly connected to one side of the heating cover 6. The power supply 11 is located on the inner wall of the second heating cover 10. This second heating cover 10 mainly protects the internal power supply 11 from external environmental influences, providing a safety protection effect. The cooling component includes a cooling pipe 15, which serves as the carrier of the coolant and the main component for heat exchange. One side of the cooling pipe 15 is fixedly connected to the outer wall of the metal cooling cover 5. This arrangement efficiently transfers the cooling capacity of the coolant inside the pipe to the metal cooling cover 5. A small circulating pump 13 is fixedly connected to one side of the metal cooling cover 5.The small circulating pump 13 provides circulation power for the coolant in the cooling pipe 15, ensuring continuous flow of the coolant and removing heat, achieving active forced cooling. Both ends of the cooling pipe 15 are threadedly connected to connecting cylinders 14. Multiple connecting cylinders 14 are connected to the input and output ends of the small circulating pump 13 via flexible hoses. The threaded connection of these connecting cylinders 14 facilitates easy separation or connection between the cooling pipe 15 and the circulating pump, enabling easy replacement and replenishment of the coolant. Each metal cooling cover 5 and heating cover 6 has T-shaped sliders 12 fixedly connected to both sides of its bottom. Multiple T-shaped sliders 12 are slidably connected to the inner wall of the top groove of the base plate 1. The T-shaped sliders 12 slide precisely in a straight line in conjunction with the groove on the top of the base plate 1, providing guidance and limiting for the reciprocating movement of the heating cover 6 and the metal cooling cover 5, achieving smooth movement and precise positioning.

[0031] Working principle: During the heating process of the outer wall of the lithium-ion battery pack 9, one of the multi-section electric push rods 3 is activated. The output end of the multi-section electric push rod 3 drives the heating cover 6 to move to the outer wall of the lithium-ion battery pack 9 until it is in contact with one side of the insulation plate 7. During this process, the T-shaped slider 12 at the bottom of the heating cover 6 will slide inside the base plate 1 to limit the movement direction of the heating cover 6. When the heating cover 6 is in contact with one side of the insulation plate 7, the heating cover 6 will completely cover the lithium-ion battery pack 9. Next, the power supply 11 is turned on, and the heating cover 6 is used to heat the power supply. The electrical energy released by 11 is converted into heat energy and conducted to the outer wall of the lithium-ion battery pack 9, ensuring the proper operation of the lithium-ion battery pack 9 at low temperatures. When heating is not required, one of the multi-section electric push rods 3 is driven to push the heating cover 6 back to its original position. When cooling of the outer wall of the lithium-ion battery pack 9 is required, another multi-section electric push rod 3 is activated. The output end of the other multi-section electric push rod 3 drives the metal cooling cover 5 to move to the outer wall of the lithium-ion battery pack 9. Based on the same principle, the T-shaped slider 12 at the bottom of the metal cooling cover 5 slides on the inner wall of the groove at the top of the base plate 1. The movement of the metal cooling cover 5 is limited. When one side of the metal cooling cover 5 is in contact with the metal heat sink 8, the metal cooling cover 5 completely encloses the lithium-ion battery pack 9. Then, the small circulation pump 13 is started to drive the coolant inside the cooling pipe 15 to flow. The cool air emitted by the coolant is transferred to the surface of the lithium-ion battery pack 9 through the metal cooling cover 5, thereby cooling the outer wall of the lithium-ion battery pack 9. When it is necessary to drain the coolant inside the cooling pipe 15, the connecting cylinder 14 is turned to separate the connecting cylinder 14 from the output and input ends of the small circulation pump 13, so that the coolant can be smoothly drained or replenished into the cooling pipe 15. This achieves good performance of the lithium-ion battery pack 9 at different temperatures, solving the problem that traditional lithium-ion battery packs 9 are prone to operation obstruction and damage to internal components when used in high or low temperature environments. It enhances the adaptability and reliability of the lithium-ion battery pack 9 to complex environments such as high and low temperatures, ensuring that it can maintain a high-efficiency and stable working state under different temperature conditions, thereby effectively improving the overall performance of the battery pack and extending its service life.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wide-temperature lithium-ion battery pack, comprising a base plate (1), characterized in that: The base plate (1) is fixedly connected to a lithium-ion battery pack (9) and multiple fixing blocks (2) at the top. Each fixing block (2) is fixedly connected to multiple electric push rods (3). Each electric push rod (3) is fixedly connected to a connecting plate (4). One of the connecting plates (4) is fixedly connected to a heating cover (6) on one side. The heating cover (6) is equipped with a heating component. The other connecting plate (4) is fixedly connected to a metal cooling cover (5) on one side. The metal cooling cover (5) has a groove (16) inside and a cooling component inside.

2. The wide-temperature lithium-ion battery pack according to claim 1, characterized in that: A heat insulation plate (7) is provided on one side of the heating cover (6), and a metal heat dissipation plate (8) is provided on one side of the metal cooling cover (5). The bottom of the heat insulation plate (7) and the metal heat dissipation plate (8) are fixedly connected to the top of the fixing block (2).

3. A wide-temperature lithium-ion battery pack according to claim 1, characterized in that: The heating component includes a power supply (11), one side of which is fixedly connected to the outer wall of the heating cover (6) and connected by a wire.

4. A wide-temperature lithium-ion battery pack according to claim 3, characterized in that: A second heating cover (10) is fixedly connected to one side of the first heating cover (6), and the power supply (11) is located on the inner wall of the second heating cover (10).

5. A wide-temperature lithium-ion battery pack according to claim 1, characterized in that: The cooling component includes a cooling pipe (15), one side of which is fixedly connected to the outer wall of the metal cooling cover (5), and a small circulating pump (13) is fixedly connected to one side of the metal cooling cover (5).

6. A wide-temperature lithium-ion battery pack according to claim 5, characterized in that: Both ends of the cooling pipe (15) are fixedly threaded with connecting cylinders (14), and the multiple connecting cylinders (14) are connected to the input and output ends of the small circulating pump (13) through hoses.

7. A wide-temperature lithium-ion battery pack according to claim 1, characterized in that: Each of the metal cooling shrouds (5) and heating shrouds (6) is fixedly connected to two sides of the bottom with T-shaped sliders (12), and multiple T-shaped sliders (12) are slidably connected to the inner wall of the top groove of the base plate (1).

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