A new energy battery shell with liquid cooling structure

Abstract

The utility model discloses a new energy battery casing with liquid cooling structure belongs to new energy battery technical field, including lower end cover, the lower end cover inner wall fixedly connected with the baffle, and the lower end cover front end inner wall fixedly connected with the pump body, and the output fixedly connected with cooling liquid tank of pump body, and cooling liquid tank fixedly connected in the lower end cover inner wall, the upper surface swing joint of lower end cover has the upper end cover, and the upper end cover inside is equipped with the vent groove, and the vent groove about the upper end cover center symmetry distribution, the surface fixedly connected with cooling pipe of cooling liquid tank, and cooling pipe is in the surface equal interval distribution of cooling liquid tank, and cooling pipe and the inner wall of baffle are pasted. This new energy battery casing with liquid cooling structure, through setting up the heat dissipation sheet and the pivot, make heat dissipation sheet and the thermal air around the battery assembly contact range more widely, make the thermal air and heat dissipation sheet surface contact more fully to the overall heat dissipation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of new energy battery technology, specifically a new energy battery casing with a liquid cooling structure. Background Technology

[0002] New energy batteries refer to batteries that employ novel chemical systems or technologies and possess characteristics such as high energy density, long lifespan, and environmental friendliness. They are primarily used to support the development of new energy industries (such as electric vehicles and renewable energy storage). The battery casing is the load-bearing component of the new energy battery, mainly used to protect the lithium battery from damage when subjected to external impacts or pressure, ensuring the normal operation of the new energy battery. During charging and discharging, new energy batteries generate a large amount of heat, thus requiring heat dissipation to ensure normal operation. If the battery cannot be cooled quickly enough, it can easily overheat and become damaged, shortening its lifespan.

[0003] To overcome the above-mentioned defects, the prior art (Chinese patent application number CN202221794383.0, application date 2022-07-13) provides a new energy vehicle battery casing with a cooling structure, including an end cover, a support plate, and a housing. The housing is fixedly installed on the top of the support plate, and a battery pack is installed inside the housing by bolts. A battery management system is fixedly connected to the top of the battery pack. A water pump is fixedly connected inside the coolant tank at one end of the cooling pipe. A distribution box is fixedly installed on the top of the support plate on one side of the water pump. A duct is fixedly connected between the distribution box and the housing. Fans are fixedly installed inside the distribution boxes at both ends of the distribution box. Through the combination of various structures, after the coolant is added to the cooling tank during use, the cooling pipe can effectively cool the device, and the fan can physically cool the inside of the device during use, improving the heat dissipation effect of the device and optimizing the use process.

[0004] New energy batteries generate a lot of heat during charging and discharging. Relying solely on the contact between the coolant and the surface of the battery module for heat dissipation is not efficient enough. The contact area between the coolant and the surface of the battery module is relatively fixed and cannot fully cover the heat generated in various parts of the battery module. During use, the aforementioned device cannot improve the overall heat dissipation effect of the battery casing, resulting in excessively high internal temperature of the casing, reducing the service life of the battery module, and causing large local temperature differences inside the casing, which affects the normal operation of the battery module. Utility Model Content

[0005] The purpose of this utility model is to provide a new energy battery casing with a liquid cooling structure to solve the problems mentioned in the background art, such as the inability to improve the overall heat dissipation effect of the battery casing, resulting in excessively high internal temperature of the casing, reducing the service life of the battery module, and causing large local temperature differences inside the casing, which affects the normal operation of the battery module.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a new energy battery casing with a liquid cooling structure, comprising a lower end cover, a partition fixedly connected to the inner wall of the lower end cover, a pump body fixedly connected to the inner wall of the front end of the lower end cover, and a coolant tank fixedly connected to the output of the pump body, while the coolant tank is fixedly connected to the inner wall of the lower end cover; an upper end cover is movably connected to the upper surface of the lower end cover, and a venting groove is provided inside the upper end cover, and the venting groove is symmetrically distributed about the center of the upper end cover; cooling pipes are fixedly connected to the surface of the coolant tank, and the cooling pipes are evenly distributed on the surface of the coolant tank, and the cooling pipes are in contact with the inner wall of the partition; a connector is fixedly connected to the outer side of the lower end cover.

[0007] Preferably, a baffle is fixedly connected to the inner wall of the rear end of the upper cover, and a rotating shaft is rotatably provided inside the baffle.

[0008] Preferably, a motor is fixedly connected to the inner wall of the front end of the upper cover, and the output end of the motor is fixedly connected to the rotating shaft.

[0009] Preferably, a limiting rod is fixedly connected to the inner wall of the upper end cover, and the limiting rod is slidably connected to a heat dissipation plate.

[0010] Preferably, a heat sink is threaded onto the surface of the rotating shaft, and the heat sinks are evenly distributed on the surface of the rotating shaft.

[0011] Preferably, the rotating shaft surface is threaded with a push block, and the push block is slidably disposed on the surface of the limiting rod, and the end of the push block is arc-shaped.

[0012] Preferably, a fixing block is fixedly connected to the inner wall of the rear end of the upper end cover, and a connecting shaft is rotatably arranged inside the fixing block. An air agitator plate is fixedly connected to the surface of the connecting shaft, and one end of a torsion spring is fixedly connected to the surface of the connecting shaft, while the other end of the torsion spring is fixedly connected to the fixing block.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the new energy battery casing with liquid cooling structure adopts a novel structural design, the specific details of which are as follows:

[0014] (1) The new energy battery casing with liquid cooling structure, through the heat dissipation plate and the rotating shaft, makes the heat dissipation plate have a wider contact range with the hot air around the battery component, and makes the hot air more fully contact the surface of the heat dissipation plate, thereby improving the overall heat dissipation efficiency.

[0015] Furthermore, this avoids large local temperature differences within the device, resulting in a more uniform temperature distribution throughout the battery assembly. This helps improve battery consistency and stability, and extends battery life.

[0016] (2) The new energy battery casing with liquid cooling structure enables the air inside the device to flow rapidly through the air agitator and connecting shaft, and can more comprehensively remove the heat from the surface of the heat sink, avoiding local overheating and improving the overall heat dissipation effect of the device.

[0017] Furthermore, the air agitator plate can reduce dust residue on the surface of the battery module, extending the battery module's lifespan.

[0018] (3) The new energy battery casing with liquid cooling structure, through the set coolant tank and cooling pipe, enables the heat generated by the battery module to be efficiently transferred to the coolant, efficiently removes the heat of the battery module, and ensures that the battery works within a suitable temperature range. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the connection structure between the lower end cover and the upper end cover of this utility model;

[0020] Figure 2 This is a schematic diagram of the connection structure between the pump body and the coolant tank of this utility model;

[0021] Figure 3 This is a schematic diagram of the connection structure between the upper end cover and the limiting rod of this utility model;

[0022] Figure 4 This is a schematic diagram of the connection structure between the upper cover and the baffle of this utility model;

[0023] Figure 5 This is a schematic diagram of the connection structure between the limiting rod and the push block of this utility model;

[0024] Figure 6 This is a schematic diagram of the connection structure between the upper end cover and the fixing block of this utility model;

[0025] Figure 7 This is a schematic diagram of the connection structure between the torsion spring and the air agitator plate of this utility model.

[0026] In the diagram: 1. Lower end cover; 2. Upper end cover; 3. Vent groove; 4. Pump body; 5. Coolant tank; 6. Cooling pipe; 7. Connector; 8. Motor; 9. Shaft; 10. Limiting rod; 11. Heat sink; 12. Push block; 13. Baffle; 14. Fixing block; 15. Connecting shaft; 16. Air agitator plate; 17. Torsion spring; 18. Partition plate. Detailed Implementation

[0027] 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.

[0028] Example 1: The lower end cover 1, upper end cover 2, and partition 18 improve the stability during operation. Figures 1-3 As shown: It includes a lower end cover 1, a partition 18 is fixedly connected to the inner wall of the lower end cover 1, and a pump body 4 is fixedly connected to the inner wall of the front end of the lower end cover 1. The output of the pump body 4 is fixedly connected to a coolant tank 5. The coolant tank 5 is fixedly connected to the inner wall of the lower end cover 1. An upper end cover 2 is movably connected to the upper surface of the lower end cover 1. A venting groove 3 is opened inside the upper end cover 2 and is symmetrically distributed about the center of the upper end cover 2. Cooling pipes 6 are fixedly connected to the surface of the coolant tank 5 and are evenly distributed on the surface of the coolant tank 5. The cooling pipes 6 are attached to the inner wall of the partition 18. A connector 7 is fixedly connected to the outer side of the lower end cover 1.

[0029] Workers use appropriate tools to separate the upper cover 2 from the lower cover 1, and install the battery assembly according to the reserved position of the inner wall partition 18 of the lower cover 1, while ensuring that the battery assembly does not shake during operation. After installation, the upper cover 2 and the lower cover 1 are connected, and the device is connected to an external power source through the connector 7 to ensure stable operation. As the battery assembly temperature rises, the pump 4 starts to work. Under the pressure generated by the pump 4, the coolant flows out from the coolant tank 5 and flows steadily along the cooling pipe 6, fully covering the area around the battery assembly. Heat can be efficiently transferred from the battery assembly to the coolant, causing the coolant temperature to rise and the battery assembly temperature to drop.

[0030] In Example 2, unlike Example 1, the heat dissipation efficiency of the device is improved by using a heat sink 11, a rotating shaft 9, and a limiting rod 10. Figures 4-5 As shown: A baffle 13 is fixedly connected to the inner wall of the rear end of the upper cover 2, and a rotating shaft 9 is rotatably installed inside the baffle 13. A motor 8 is fixedly connected to the inner wall of the front end of the upper cover 2, and a rotating shaft 9 is fixedly connected to the output end of the motor 8. A limit rod 10 is fixedly connected to the inner wall of the upper cover 2, and a heat sink 11 is slidably connected through the limit rod 10. A heat sink 11 is threadedly connected to the surface of the rotating shaft 9, and the heat sink 11 is evenly distributed on the surface of the rotating shaft 9.

[0031] When the motor 8 is working, it drives the output shaft 9 to rotate. There is a bidirectional threaded groove on the surface of the shaft 9. The heat sink 11 is threadedly connected to the bidirectional threaded groove on the surface of the shaft 9 through the threaded hole. The limiting rod 10 passes through the heat sink 11, so that the heat sink 11 slides back and forth inside the upper cover 2. During the sliding process, the heat sink 11 continuously changes its relative position with the air around the battery assembly, which increases the air disturbance and breaks the air boundary layer, so that the air can exchange heat with the heat sink 11 more quickly. As the heat sink 11 slides back and forth, the dust residue on the surface of the heat sink 11 is reduced, ensuring that the heat dissipation efficiency will not decrease significantly due to dust accumulation during long-term operation of the device.

[0032] In embodiment three, unlike embodiment two, the pusher block 12, the fixing block 14, and the air agitator plate 16 are used to make the air inside the device flow rapidly, such as... Figures 6-7 As shown: A push block 12 is threadedly connected to the surface of the rotating shaft 9, and the push block 12 is slidably disposed on the surface of the limiting rod 10. The end of the push block 12 is arc-shaped. A fixing block 14 is fixedly connected to the inner wall of the rear end of the upper end cover 2. A connecting shaft 15 is rotatably disposed inside the fixing block 14. An air agitator plate 16 is fixedly connected to the surface of the connecting shaft 15. At the same time, one end of a torsion spring 17 is fixedly connected to the surface of the connecting shaft 15, and the other end of the torsion spring 17 is fixedly connected to the fixing block 14.

[0033] The push block 12 is connected to the threaded groove on the surface of the rotating shaft 9 through a threaded hole. At the same time, the limiting rod 10 passes through the push block 12, so that when the rotating shaft 9 is working, it drives the push block 12 to slide on the surface of the limiting rod 10. As the push block 12 comes into contact with the air agitator 16, the air agitator 16 rotates inside the fixed block 14 with the connecting shaft 15 as the center, so that the air inside the device flows quickly and can more comprehensively remove the heat from the surface of the heat sink 11, improving the overall heat dissipation effect of the device. At the same time, the air agitator 16 can reduce the dust residue on the surface of the battery assembly and extend the service life of the battery assembly.

[0034] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0035] Although embodiments of the present invention 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 to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A new energy battery casing with a liquid cooling structure, comprising a lower end cover (1), wherein a partition (18) is fixedly connected to the inner wall of the lower end cover (1), and a pump body (4) is fixedly connected to the inner wall of the front end of the lower end cover (1), and the output of the pump body (4) is fixedly connected to a coolant tank (5), while the coolant tank (5) is fixedly connected to the inner wall of the lower end cover (1); Its features are: The upper end cover (2) is movably connected to the upper surface of the lower end cover (1), and the upper end cover (2) has a ventilation groove (3) inside, and the ventilation groove (3) is symmetrically distributed about the center of the upper end cover (2). Cooling pipes (6) are fixedly connected to the surface of the coolant tank (5), and the cooling pipes (6) are evenly distributed on the surface of the coolant tank (5), and the cooling pipes (6) are in contact with the inner wall of the partition (18); The lower end cap (1) is fixedly connected to a connector (7) on its outer side.

2. A new energy battery casing with a liquid-cooled structure according to claim 1, characterized in that: The upper end cover (2) is fixedly connected to the inner wall of the rear end of the baffle (13), and the baffle (13) is rotatably provided with a rotating shaft (9).

3. A new energy battery casing with a liquid-cooled structure according to claim 2, characterized in that: A motor (8) is fixedly connected to the inner wall of the front end of the upper cover (2), and the output end of the motor (8) is fixedly connected to the rotating shaft (9).

4. A new energy battery casing with a liquid-cooled structure according to claim 3, characterized in that: The upper end cover (2) is fixedly connected to the inner wall of the limiting rod (10), and the limiting rod (10) is slidably connected to the heat sink plate (11).

5. A new energy battery casing with a liquid-cooled structure according to claim 4, characterized in that: The rotating shaft (9) is threaded with a heat sink (11), and the heat sink (11) is evenly distributed on the surface of the rotating shaft (9).

6. A new energy battery casing with a liquid-cooled structure according to claim 5, characterized in that: The rotating shaft (9) is threadedly connected to a push block (12), and the push block (12) is slidably disposed on the surface of the limiting rod (10), and the end of the push block (12) is arc-shaped.

7. A new energy battery casing with a liquid-cooled structure according to claim 6, characterized in that: A fixing block (14) is fixedly connected to the inner wall of the rear end of the upper end cover (2), and a connecting shaft (15) is rotatably arranged inside the fixing block (14). An air agitator plate (16) is fixedly connected to the surface of the connecting shaft (15), and one end of a torsion spring (17) is fixedly connected to the surface of the connecting shaft (15), and the other end of the torsion spring (17) is fixedly connected to the fixing block (14).

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