Lithium battery module
The heat dissipation component, which combines a heat-conducting plate and a ventilation shroud, solves the problem of insufficient heat dissipation of lithium battery modules under high-power discharge or high-temperature environments, achieving efficient heat dissipation and dust protection, and extending battery life.
Patent Information
- Application Number
- CN202423280243.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Existing lithium battery modules have insufficient heat dissipation efficiency under high-power discharge or high-temperature environments, resulting in excessively high temperatures that affect battery performance and lifespan.
A heat dissipation assembly consisting of a first heat-conducting plate and a second heat-conducting plate is adopted, combined with a ventilation shroud and a cooling fan. The heat dissipation effect is enhanced by combining natural heat dissipation and airflow heat dissipation, and the dust ingress is reduced by the sealing design.
It improves the heat dissipation of lithium battery packs, reduces overheating, extends battery life, and reduces the impact of dust on heat dissipation.
Smart Images
Figure CN223815754U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lithium battery pack technology, and more specifically, to a lithium battery module. Background Technology
[0002] A lithium battery module is an assembly consisting of multiple lithium battery cells connected together in series, parallel, or series-parallel combination, and equipped with necessary protection circuits, connecting components, and housing.
[0003] Existing lithium battery modules typically have heat sinks at the top and bottom when placed inside the casing, allowing the heat sinks to make close contact with the individual battery cells. This helps dissipate heat during battery operation. However, relying solely on natural convection heat dissipation from the top and bottom heat sinks may result in insufficient heat dissipation efficiency under high-power discharge or high-temperature environments, leading to excessively high battery module temperatures and affecting battery performance and lifespan. Therefore, we propose a lithium battery module. Utility Model Content
[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a lithium battery module to solve the technical problem that the heat dissipation efficiency may be insufficient under high power discharge or high temperature environment, resulting in the battery module temperature being too high and affecting the battery performance and life.
[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a lithium battery module, including a housing and a lithium battery pack, wherein a heat dissipation component that is in contact with the lithium battery pack is installed inside the housing;
[0006] The heat dissipation assembly includes two hollow first heat-conducting plates and two hollow second heat-conducting plates. Both ends of the two facing sides of the first heat-conducting plates are integrally formed with connection ports communicating with the first heat-conducting plates, and both ends of the second heat-conducting plates are located inside the two connection ports. Sealing strips that fit the surface of the connection ports are fixed on the outer walls of both ends of the second heat-conducting plates. Ventilation ports are opened on both sides of the top of the upper second heat-conducting plate.
[0007] Ventilation covers are fixedly installed on the outside of the ventilation openings of the first heat-conducting plate on the upper side, and a heat dissipation fan connected to the ventilation cover is fixedly installed on one side of the outer wall of the housing.
[0008] This utility model uses a heat dissipation assembly composed of a first heat-conducting plate and a second heat-conducting plate to absorb the heat generated by the lithium battery pack during operation. With the addition of a ventilation shroud and a cooling fan, air can be blown into the heat dissipation assembly, thereby blowing the accumulated heat out from the ventilation shroud connected to the other side, achieving the heat dissipation effect. This structural design can add the function of airflow heat dissipation while achieving natural heat dissipation, further enhancing the heat dissipation effect of the lithium battery pack and reducing the occurrence of overheating.
[0009] Preferably, the opposite sides of the connection port are provided with a locking groove, and the opposite sides of the second heat-conducting plate are fixedly provided with an elastic plate. The lower end of the elastic plate near the side of the first heat-conducting plate is integrally formed with a locking strip that engages with the locking groove, and the end face of the locking strip is an arc-shaped surface.
[0010] Preferably, an elastic groove is provided in the middle of one side of the elastic plate near the connection port, and the elastic groove is V-shaped.
[0011] Preferably, a positioning frame is fixedly provided on the side where the connection port is combined with the elastic plate, and an elastic support strip is fixedly provided on the bottom of the elastic plate and combined with the positioning frame, and the material of the elastic support strip is rubber.
[0012] Preferably, guide plates are fixedly provided at the corners of the first heat-conducting plates on both sides near the connection port, and the angle between the guide plates and the bottom side of the inner cavity of the first heat-conducting plate is 60°.
[0013] Preferably, a dust cover communicating with a ventilation hood is fixedly installed on the outer wall of the other side of the housing, and the dust cover is fixedly connected to the housing by screws.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] 1. This utility model uses a heat dissipation assembly composed of a first heat-conducting plate and a second heat-conducting plate to absorb the heat generated by the lithium battery pack during operation. With the addition of a ventilation shroud and a cooling fan, air can be blown into the interior of the heat dissipation assembly, thereby blowing the accumulated heat out from the ventilation shroud connected to the other side, achieving the effect of heat dissipation. This structural design can add the function of airflow heat dissipation while achieving natural heat dissipation, further enhancing the heat dissipation effect of the lithium battery pack during operation and reducing the occurrence of overheating.
[0016] 2. This utility model also facilitates assembly and disassembly by connecting the first heat-conducting plate and the second heat-conducting plate by plugging them together. The locking connection is achieved by the combination of the side end clip of the elastic plate and the locking groove on the outer wall of the connection port, which makes the structure simple to fit. At the same time, this structural design can reduce the entry of dust into the inside of the shell while maintaining the ventilation and heat dissipation effect, reduce the impact of dust on the operation of the lithium battery pack, and improve the safety of heat dissipation. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a cross-sectional structural diagram of the present invention;
[0019] Figure 3 This is a partial cross-sectional view of the present invention;
[0020] Figure 4 This is an exploded view of the heat dissipation component in this utility model;
[0021] Figure 5 for Figure 3 Enlarged structural diagram of section A;
[0022] Figure 6 for Figure 4 Enlarged structural diagram of section B.
[0023] The following are the labels in the diagram: 1. Housing; 2. Lithium battery pack; 3. Heat dissipation assembly; 4. First heat conduction plate; 401. Connection port; 402. Locking slot; 403. Positioning frame; 404. Guide plate; 405. Ventilation opening; 5. Second heat conduction plate; 501. Sealing strip; 502. Elastic plate; 503. Locking strip; 504. Elastic groove; 505. Elastic support strip; 6. Ventilation cover; 7. Cooling fan; 8. Dust cover. Detailed Implementation
[0024] like Figures 1 to 6 As shown, the present invention relates to a lithium battery module, including a housing 1 and a lithium battery pack 2. A heat dissipation component 3 is installed inside the housing 1 and is in contact with the lithium battery pack 2. The heat dissipation component 3 can absorb heat and achieve heat dissipation when it is in contact with the lithium battery pack 2.
[0025] The heat dissipation assembly 3 includes two hollow first heat-conducting plates 4 and two hollow second heat-conducting plates 5. Both ends of the two facing sides of the two first heat-conducting plates 4 are integrally formed with connection ports 401 communicating with the first heat-conducting plates 4, and both ends of the second heat-conducting plates 5 are located inside the two connection ports 401. Sealing strips 501 that fit the surface of the connection ports 401 are fixed on the outer walls of both ends of the second heat-conducting plates 5. Ventilation ports 405 are opened on both sides of the top of the upper second heat-conducting plate 5. The combination of the hollow first heat-conducting plates 4 and the second heat-conducting plates 5 can form a closed annular flow space. The connection between the two can maintain the seal under the action of the sealing strips 501, reducing the spread of dust.
[0026] Ventilation covers 6 are fixedly installed on the outside of the ventilation openings 405 of the upper first heat conduction plate 4. A heat dissipation fan 7 connected to the ventilation cover 6 is fixedly installed on one side of the outer wall of the housing 1. The ventilation cover 6 and the heat dissipation fan 7 can be used to heat the inside of the heat dissipation component 3, thereby carrying away the heat accumulated inside and achieving the effect of ventilation and heat dissipation.
[0027] In the embodiments of this utility model, the opposite sides of the connection port 401 are provided with locking grooves 402, and the opposite sides of the second heat-conducting plate 5 are fixedly provided with elastic plates 502. The lower end of the elastic plate 502 is integrally formed with a locking strip 503 that engages with the locking groove 402 on the side near the first heat-conducting plate 4, and the end face of the locking strip 503 is an arc-shaped surface. The locking strip 503 on the side end of the elastic plate 502 can be inserted into the locking groove 402 to achieve the effect of limiting connection. Under the influence of no external force, the stability of the joint position of the first heat-conducting plate 4 and the second heat-conducting plate 5 can be maintained. The arc-shaped design of the locking strip 503 makes it easy for the elastic plate 502 to bend when squeezed, which is convenient for disassembly and assembly.
[0028] In an embodiment of this utility model, an elastic groove 504 is provided in the middle of one side of the elastic plate 502 near the connection port 401, and the elastic groove 504 is V-shaped. The design of the elastic groove 504 can improve the elasticity of the side of the elastic plate 502, making it easy to bend. At the same time, the V-shaped design has high compressive strength and is not easily deformed.
[0029] In this embodiment of the utility model, a positioning frame 403 is fixedly provided on the side where the connection port 401 is combined with the elastic plate 502, and an elastic support strip 505 is fixedly provided at the bottom of the elastic plate 502 and combined with the positioning frame 403. The elastic support strip 505 is made of rubber. The elastic support strip 505 can be inserted into the interior of the positioning frame 403 and can shrink under the pressure of compression, thereby having a certain elastic support force. In this way, when the second heat-conducting plate 5 is installed in place, the stability of the combination between the clip 503 and the slot 402 can be enhanced under the mutual compression force.
[0030] In the embodiments of this utility model, guide plates 404 are fixedly provided at the corners of the first heat-conducting plates 4 on both sides near the connection port 401, and the angle between the guide plate 404 and the bottom of the inner cavity of the first heat-conducting plate 4 is 60°; the design of the guide plate 404 can conveniently guide the airflow direction of the cooling fan 7.
[0031] In an embodiment of this utility model, a dust cover 8 communicating with the ventilation cover 6 is fixedly installed on the outer wall of the other side of the housing 1. The dust cover 8 is fixedly connected to the housing 1 by screws. The dust cover 8 can reduce the entry of dust into the heat dissipation component 3 when the cooling fan 7 is not working, thus maintaining the cleanliness of the interior.
[0032] Working Principle: This embodiment provides a lithium battery module. When the lithium battery pack 2 is working, the heat generated by the heat dissipation component 3 can be absorbed, causing the internal space of the heat dissipation component 3 to heat up. Then, with the operation of the cooling fan 7, air is blown into the interior of the heat dissipation component 3 through the ventilation cover 6. The blown-out cold air can blow out the heat accumulated inside the heat dissipation component 3, thereby improving the internal airflow. The internal heat can flow out with the cold air from the ventilation cover 6 on the other side and be discharged outward through the dust cover 8, thus achieving the effect of ventilation and heat dissipation. This structure can increase the ventilation and heat dissipation function while maintaining the internal seal of the housing 1, effectively improving the heat dissipation effect of the lithium battery pack 2 and reducing the phenomenon of excessive temperature affecting the service life. At the same time, the dust cover 8 connected to the ventilation cover 6 on the other side can reduce the entry of dust into the interior of the heat dissipation component 3 and reduce the impact of dust on the heat absorption effect of the heat dissipation component 3.
[0033] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.
Claims
1. A lithium battery module, characterized in that, It includes a housing (1) and a lithium battery pack (2), and a heat dissipation component (3) that is in contact with the lithium battery pack (2) is installed inside the housing (1); The heat dissipation assembly (3) includes two hollow first heat-conducting plates (4) and two hollow second heat-conducting plates (5). Both ends of the two first heat-conducting plates (4) facing each other are integrally formed with connection ports (401) communicating with the first heat-conducting plates (4). The two ends of the second heat-conducting plates (5) are located inside the two connection ports (401). The outer walls of both ends of the second heat-conducting plates (5) are fixed with sealing strips (501) that fit the surface of the connection ports (401). Ventilation ports (405) are opened on both sides of the top of the upper second heat-conducting plate (5). Ventilation covers (6) are fixedly installed on the outside of the ventilation openings (405) of the first heat-conducting plate (4) on the upper side, and a heat dissipation fan (7) communicating with the ventilation cover (6) is fixedly installed on one side of the outer wall of the housing (1).
2. A lithium battery module according to claim 1, characterized in that, The connecting port (401) has a slot (402) on each side opposite to the connection port. The second heat-conducting plate (5) has an elastic plate (502) fixed on each side opposite to the connection port. The lower end of the elastic plate (502) is integrally formed with a strip (503) that is connected to the slot (402) on the side near the first heat-conducting plate (4). The end face of the strip (503) is an arc-shaped surface.
3. A lithium battery module according to claim 2, characterized in that, The elastic plate (502) has an elastic groove (504) at the middle of one side near the connection port (401), and the elastic groove (504) is V-shaped.
4. A lithium battery module according to claim 2, characterized in that, A positioning frame (403) is fixedly provided on the side where the connection port (401) is combined with the elastic plate (502). An elastic support strip (505) is fixedly provided at the bottom of the elastic plate (502) and is combined with the positioning frame (403). The elastic support strip (505) is made of rubber.
5. A lithium battery module according to claim 1, characterized in that, Guide plates (404) are fixedly provided at the corners of the first heat-conducting plates (4) on both sides near the connection port (401), and the angle between the guide plate (404) and the bottom of the inner cavity of the first heat-conducting plate (4) is 60°.
6. A lithium battery module according to claim 1, characterized in that, A dust cover (8) communicating with the ventilation cover (6) is fixedly installed on the outer wall of the other side of the housing (1). The dust cover (8) and the housing (1) are fixedly connected by screws.