Battery pack packaging device with liquid cooling function

By designing a battery pack packaging device with liquid cooling function, the liquid-cooled plate and liquid-cooled channel group can achieve uniform and stable heat dissipation and cooling of the battery cell module, solving the risk of poor temperature uniformity and coolant leakage in traditional battery pack cooling systems, and extending the service life of the battery pack.

CN222749628UActive Publication Date: 2025-04-11WUXI MINGHENG HYBRID TECH CO LTD
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Patent Information

Application Number
CN202421436384.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-23
Publication Date
2025-04-11
Estimated Expiration
2034-06-23

AI Technical Summary

Technical Problem

In traditional battery pack cooling systems, the temperature uniformity of air-cooling is not ideal, while the water-cooling pipe processing technology of the water-cooling system is high, costly and prone to rupture, resulting in the risk of coolant leakage.

Method used

A battery pack packaging device with liquid cooling function is designed, including a battery pack frame and a liquid-cooled plate arranged on the bottom side of the battery pack frame. The liquid-cooled plate is equipped with a liquid-cooled channel group and an interface, and the uniform and stable heat dissipation and cooling of the battery cell module are achieved through a hidden liquid-cooled circulation structure.

Benefits of technology

The device realizes uniform and stable heat dissipation and cooling of the battery module, extends the service life of the battery pack, and avoids the risk of coolant leakage. It has a simple structure and is not easily affected by external collisions.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of battery packs, specifically a battery pack packaging device with a liquid cooling function, including a battery pack frame and a liquid cooling plate arranged on the bottom side of the battery pack frame, the battery pack frame and the liquid cooling plate are connected to each other to form a mounting groove; the battery pack frame includes a pair of long frames symmetrically arranged, and the two ends of the two long frames are respectively provided with a first wide frame and a second wide frame; the liquid cooling plate includes a battery cell module bearing area, and a first wide frame mounting position, a second wide frame mounting position, and two long frame mounting positions surrounding the battery cell module bearing area. Compared with the traditional battery pack cooling structure, this device adopts a hidden liquid cooling circulation structure, which not only does not occupy the internal and external space of the battery pack, but also has a simple structure, is not easily affected by external collisions, and can provide uniform and stable heat dissipation and cooling for the battery cell module, thereby extending the service life of the battery pack.
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Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, and in particular to a battery pack packaging device with a liquid cooling function. Background Art

[0002] At present, new energy vehicles have attracted wide attention from all walks of life due to their excellent environmental performance. The requirements for new energy vehicles are also constantly increasing. As a new energy vehicle, electric vehicles are also developing in the direction of high safety, high energy ratio and light weight. The main factor that determines the mileage of electric vehicles is the power supply battery. Different specifications of power supply batteries can be selected for different models to meet driving requirements.

[0003] The power supply battery for electric vehicles is generally a battery pack composed of multiple battery modules, that is, multiple battery modules are stacked in the same box, and then the battery modules are connected. The core battery module is generally configured with a corresponding number of batteries according to the size of the voltage to be output, and then all the batteries are connected to output the voltage. The battery module releases a lot of heat during operation. If it is not effectively cooled and dissipated, it will affect the service life of the battery module at the least, and cause safety accidents due to excessive temperature at the worst.

[0004] Currently, most electric vehicle battery packs are equipped with thermal management systems, which are mainly divided into passive thermal management and active thermal management. Passive thermal management utilizes the natural cooling of the battery pack; active thermal management mainly includes air cooling, liquid cooling, and phase change material cooling. In practice, air cooling and water cooling systems are commonly used. Air cooling does not perform well in terms of temperature uniformity. The processing technology requirements for water cooling pipes in general water cooling systems are high, the cost is high, and the wall of the water cooling pipes is thin. When the battery pack vibrates violently, there is a risk of water cooling pipes rupture and liquid leakage. There is also a risk of rupture when the vehicle encounters a collision.

[0005] Therefore, a new technical solution is urgently needed to solve the above technical problems. Utility Model Content

[0006] The purpose of the utility model is to overcome the above-mentioned problems of the prior art and to provide a battery pack packaging device with liquid cooling function, which is used to solve the technical problems that the air cooling used to cool the battery cell module in the traditional technology has unsatisfactory performance in temperature uniformity, the water cooling system has high processing technology requirements and high cost, and the water cooling pipe wall is thin and easy to rupture, causing coolant leakage.

[0007] The above objectives are achieved through the following technical solutions:

[0008] A battery pack packaging device with a liquid cooling function comprises a battery pack frame and a liquid cooling plate arranged on the bottom side of the battery pack frame, wherein the battery pack frame and the liquid cooling plate are connected to each other to form a mounting groove; the battery pack frame comprises a pair of long frames arranged symmetrically, and a first wide frame and a second wide frame are respectively arranged at both ends of the two long frames; the liquid cooling plate comprises a battery cell module carrying area, and a first wide frame mounting position, a second wide frame mounting position, and two long frame mounting positions surrounding the battery cell module carrying area; the first wide frame mounting position is used to connect to the first wide frame, the second wide frame mounting position is used to connect to the second wide frame, and the two long frame mounting positions are respectively used to connect to the long frames.

[0009] Furthermore, the liquid cooling plate includes a liquid cooling channel group arranged in the plate body, and a first liquid cooling interface and a second liquid cooling interface connected to the liquid cooling channel group.

[0010] Furthermore, the liquid cooling channel group corresponds to the battery cell module bearing area.

[0011] Furthermore, the liquid cooling channel forms an S shape, including a first transverse liquid cooling channel, a second transverse liquid cooling channel and a third transverse liquid cooling channel which are parallel to each other, one end of the first transverse liquid cooling channel is connected to the first liquid cooling interface, and the other end is connected to one end of the second transverse liquid cooling channel through a first vertical liquid cooling channel, the other end of the second transverse liquid cooling channel is connected to one end of the third transverse liquid cooling channel through a second vertical liquid cooling channel, and the other end of the third transverse liquid cooling channel is connected to the second liquid cooling interface.

[0012] Furthermore, a first fin group is arranged in the first transverse liquid cooling channel, a second fin group is arranged in the first vertical liquid cooling channel, a third fin group is arranged in the second transverse liquid cooling channel, a fourth fin group is arranged in the second vertical liquid cooling channel, and a fifth fin group is arranged in the third transverse liquid cooling channel, and the first fin group, the second fin group, the third fin group, the fourth fin group and the fifth fin group are connected end to end.

[0013] Further, the first fin group, the second fin group, the third fin group, the fourth fin group and the fifth fin group all include the same number of fins, and a single coolant channel is formed between adjacent fins in the same fin group.

[0014] Furthermore, symmetrical step grooves are provided on both sides of the liquid cooling plate and can penetrate the first wide frame mounting position, the long frame mounting position and the second wide frame mounting position, a long frame step groove corresponding to the step groove is provided on the bottom side of the long frame, first wide frame step grooves corresponding to the step groove are provided at both ends of the bottom side of the first wide frame, and second wide frame step grooves corresponding to the step groove are provided at both ends of the bottom side of the second wide frame.

[0015] Furthermore, the first wide frame step groove, the second wide frame step groove, and the long frame step groove are respectively screwed to the step groove by screws.

[0016] Furthermore, a cell module bearing boss is formed between the liquid cooling plates corresponding to the two stepped grooves, the cell module bearing area is located on the upper surface of the cell module bearing boss, and the liquid cooling channel group is adjacent to the cell module bearing area.

[0017] Furthermore, the liquid cooling plate and the battery pack frame are made of aluminum alloy. Beneficial Effects

[0018] The utility model provides a battery pack packaging device with a liquid cooling function, in which a liquid cooling plate with a liquid cooling function is arranged on the bottom side of the battery cell module, and the liquid cooling plate is connected to the battery pack frame to form an integrated mounting slot structure to achieve uniform and stable heat dissipation and cooling of the battery cell module. Compared with the traditional battery pack cooling structure, the device adopts a hidden liquid cooling circulation structure, which not only does not occupy the internal and external space of the battery pack, but also has a simple structure and is not easily affected by external collisions, and can provide uniform and stable heat dissipation and cooling for the battery cell module, thereby extending the service life of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram from a first perspective of a battery pack packaging device with a liquid cooling function according to the utility model;

[0020] Figure 2 This is a schematic structural diagram from a second perspective of a battery pack packaging device with liquid cooling function according to the utility model;

[0021] Figure 3 This is a partial exploded view of a battery pack packaging device with liquid cooling function described in the utility model;

[0022] Figure 4 This is a schematic diagram of a battery pack frame and a liquid cooling plate before assembly of a battery pack packaging device with liquid cooling function described in the utility model;

[0023] Figure 5It is a structural schematic diagram of a liquid cooling channel group in a battery pack packaging device with liquid cooling function described in the utility model;

[0024] Figure 6 This is a schematic diagram of the telecommunication module bearing boss and stepped groove structure in a battery pack packaging device with liquid cooling function described in the utility model.

[0025] Graphic marking:

[0026] 1-battery pack frame, 101-long frame, 102-first wide frame, 103-second wide frame, 104-long frame step groove, 105-first wide frame step groove, 106-second wide frame step groove;

[0027] 2-liquid cooling plate, 201-battery module bearing area, 202-first wide frame mounting position, 203-second wide frame mounting position, 204-long frame mounting position, 205-liquid cooling channel group, 206-first horizontal liquid cooling channel, 207-second horizontal liquid cooling channel, 208-third horizontal liquid cooling channel, 209-first vertical liquid cooling channel, 210-second vertical liquid cooling channel, 211-first liquid cooling interface, 212-second liquid cooling interface, 213-first fin group, 214-second fin group, 215-third fin group, 216-fourth fin group, 217-fifth fin group, 218-fin, 219-cooling liquid single channel, 220-step groove, 221-battery module bearing boss;

[0028] 3-Mounting slot. DETAILED DESCRIPTION

[0029] The utility model is further described in detail below based on the accompanying drawings and embodiments. The described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] like Figure 1 to Figure 4 As shown, the present solution provides a battery pack packaging device with a liquid cooling function, comprising a battery pack frame 1 and a liquid cooling plate 2 arranged at the bottom side of the battery pack frame 1, wherein the battery pack frame 1 and the liquid cooling plate 2 are connected to each other to form a mounting groove 3, and the mounting groove 3 is used to stack and fix the battery cell module;

[0031] The battery pack frame 1 includes a pair of long frames 101 symmetrically arranged with each other, and the two ends of the two long frames 101 are respectively provided with a first wide frame 102 and a second wide frame 103; the liquid cooling plate 2 includes a battery module carrying area 201, and a first wide frame mounting position 202, a second wide frame mounting position 203, and two long frame mounting positions 204 surrounding the battery module carrying area 201;

[0032] The first wide frame installation position 202 is used to connect with the first wide frame 102 , the second wide frame installation position 203 is used to connect with the second wide frame 103 , and the two long frame installation positions 204 are used to connect with the long frames 101 , respectively.

[0033] In this embodiment, the battery pack frame 1 and the liquid cooling plate 2 can be connected by screwing or welding. A top cover can be provided on the top to seal the mounting groove 3 and realize the packaging of the battery module.

[0034] In addition, the liquid cooling plate 2 and the battery pack frame 1 in this embodiment are made of aluminum alloy, which has the advantages of light weight, high strength, corrosion resistance, and good heat conduction effect.

[0035] like Figure 5 As shown, the liquid cooling plate 2 in this embodiment includes a liquid cooling channel group 205 arranged in the plate body, and a first liquid cooling interface 211 and a second liquid cooling interface 212 connected to the liquid cooling channel group 205; the first liquid cooling interface 211 and the second liquid cooling interface 212 are respectively connected to the external cooling liquid circulation pipeline, and the cooling liquid is input into the liquid cooling channel group 205 through the first liquid cooling interface 211, and refluxed to the external cooling liquid circulation pipeline through the second liquid cooling interface 212, thereby realizing continuous cooling and heat dissipation of the liquid cooling plate 2, and because the battery cell module is supported by the liquid cooling plate 2 during assembly, it is possible to achieve heat dissipation and cooling of the bottom side of the working battery cell module.

[0036] The liquid cooling channel group 205 corresponds to the battery module bearing area 201, so as to better and continuously dissipate heat and cool the area.

[0037] As an optimization of the liquid cooling channel group 205 in this embodiment, the liquid cooling channel group 205 is S-shaped, including a first transverse liquid cooling channel 206, a second transverse liquid cooling channel 207 and a third transverse liquid cooling channel 208 which are parallel to each other, one end of the first transverse liquid cooling channel 206 is connected to the first liquid cooling interface 211, and the other end is connected to one end of the second transverse liquid cooling channel 207 through a first vertical liquid cooling channel 209, the other end of the second transverse liquid cooling channel 207 is connected to one end of the third transverse liquid cooling channel 208 through a second vertical liquid cooling channel 210, and the other end of the third transverse liquid cooling channel 208 is connected to the second liquid cooling interface 212. The S-shaped channel setting can increase the contact area and time between the coolant and the liquid cooling plate 2, thereby promoting better heat dissipation.

[0038] In addition, it should be noted that in this embodiment, the first horizontal liquid cooling channel 206, the second horizontal liquid cooling channel 207 and the third horizontal liquid cooling channel 208 are parallel to the long frame 101, and the first vertical liquid cooling channel 209 and the second vertical liquid cooling channel 210 are parallel to the second wide frame 103.

[0039] In this embodiment, the first wide frame 102 and the second wide frame 103 may be two wide frames with different shapes, so as to form a sufficiently large installation slot 3 to install enough battery pack components.

[0040] As a further optimization of the liquid cooling channel group 205 in this embodiment, a first fin group 213 is provided in the first transverse liquid cooling channel 206, a second fin group 214 is provided in the first vertical liquid cooling channel 209, a third fin group 215 is provided in the second transverse liquid cooling channel 207, a fourth fin group 216 is provided in the second vertical liquid cooling channel 210, and a fifth fin group 217 is provided in the third transverse liquid cooling channel 208. The first fin group 213, the second fin group 214, the third fin group 215, the fourth fin group 216 and the fifth fin group 217 are connected end to end. Through the fin group structure provided in this embodiment, the heat of the liquid cooling plate 2 can be further conducted to the fin group, and under the circulation of the coolant, the fin group can be effectively cooled and cooled.

[0041] The first fin group 213, the second fin group 214, the third fin group 215, the fourth fin group 216 and the fifth fin group 217 all include the same number of fins 218, and adjacent fins in the same fin group form a single cooling liquid channel 219. By interconnecting the corresponding single cooling liquid channels 219 in each fin group, the cooling liquid can contact the heat source part of the liquid cooling plate 2 with the maximum area, thereby achieving the purpose of heat dissipation and temperature reduction.

[0042] On the other hand, Figure 4 As shown, in this embodiment, symmetrical step grooves 220 are opened on both sides of the liquid cooling plate 2 and can penetrate the first wide frame mounting position 202, the long frame mounting position 204 and the second wide frame mounting position 203, a long frame step groove 104 corresponding to the step groove 220 is opened on the bottom side of the long frame 101, first wide frame step grooves 105 corresponding to the step groove 220 are respectively opened at both ends of the bottom side of the first wide frame 102, and second wide frame step grooves 106 corresponding to the step groove 220 are respectively opened at both ends of the bottom side of the second wide frame 103.

[0043] The first wide frame step groove 105, the second wide frame step groove 106, and the long frame step groove 104 are respectively screwed to the step grooves, or connected by welding, or bonded by glue.

[0044] like Figure 6 As shown, a cell module supporting boss 221 is formed between the liquid cooling plates 2 corresponding to the two stepped grooves 220 , the cell module supporting area 201 is located on the upper surface of the cell module supporting boss 221 , and the liquid cooling channel group 205 is adjacent to the cell module supporting area 201 .

[0045] Specifically, by setting the cell module bearing boss 221 structure in this embodiment, the cell module bearing area 201 of the liquid cooling plate 2 can be located as much as possible in the mounting groove 3, and the liquid cooling channel group 205 of the liquid cooling plate 2 can be further limited to the mounting groove 3 as much as possible and as far away from the bottom side of the liquid cooling plate 2 as much as possible. Compared with the structural setting without the boss, this solution can achieve optimal heat dissipation and cooling of the cell module installed in the mounting groove 3.

[0046] The above description is only for illustrating the implementation mode of the present invention and is not intended to limit the present invention. For those skilled in the art, any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery pack packaging device with liquid cooling function, characterized in that: It comprises a battery pack frame (1) and a liquid cooling plate (2) arranged on the bottom side of the battery pack frame (1), wherein the battery pack frame (1) and the liquid cooling plate (2) are connected to each other to form a mounting groove (3); The battery pack frame (1) comprises a pair of long frames (101) symmetrically arranged with each other, and a first wide frame (102) and a second wide frame (103) are respectively arranged at both ends of the two long frames (101); the liquid cooling plate (2) comprises a battery cell module bearing area (201), and a first wide frame mounting position (202), a second wide frame mounting position (203), and two long frame mounting positions (204) surrounding the battery cell module bearing area (201); The first wide frame installation position (202) is used to connect to the first wide frame (102), the second wide frame installation position (203) is used to connect to the second wide frame (103), and the two long frame installation positions (204) are respectively used to connect to the long frames (101).

2. A battery pack packaging device with liquid cooling function according to claim 1, characterized in that: The liquid cooling plate (2) comprises a liquid cooling channel group (205) arranged in the plate body, and a first liquid cooling interface (211) and a second liquid cooling interface (212) which are in communication with the liquid cooling channel group (205).

3. A battery pack packaging device with liquid cooling function according to claim 2, characterized in that: The liquid cooling channel group (205) corresponds to the battery cell module bearing area (201).

4. A battery pack packaging device with liquid cooling function according to claim 2 or 3, characterized in that: The liquid cooling channel group (205) is S-shaped, and includes a first transverse liquid cooling channel (206), a second transverse liquid cooling channel (207) and a third transverse liquid cooling channel (208) which are parallel to each other. One end of the first transverse liquid cooling channel (206) is connected to the first liquid cooling interface (211), and the other end is connected to one end of the second transverse liquid cooling channel (207) through a first vertical liquid cooling channel (209). The other end of the second transverse liquid cooling channel (207) is connected to one end of the third transverse liquid cooling channel (208) through a second vertical liquid cooling channel (210), and the other end of the third transverse liquid cooling channel (208) is connected to the second liquid cooling interface (212).

5. The battery pack packaging device with liquid cooling function according to claim 4, characterized in that: A first fin group (213) is arranged in the first transverse liquid cooling channel (206), a second fin group (214) is arranged in the first vertical liquid cooling channel (209), a third fin group (215) is arranged in the second transverse liquid cooling channel (207), a fourth fin group (216) is arranged in the second vertical liquid cooling channel (210), and a fifth fin group (217) is arranged in the third transverse liquid cooling channel (208); the first fin group (213), the second fin group (214), the third fin group (215), the fourth fin group (216) and the fifth fin group (217) are connected end to end.

6. A battery pack packaging device with liquid cooling function according to claim 5, characterized in that: The first fin group (213), the second fin group (214), the third fin group (215), the fourth fin group (216) and the fifth fin group (217) all include the same number of fins (218), and a single coolant channel (219) is formed between adjacent fins in the same fin group.

7. A battery pack packaging device with liquid cooling function according to claim 6, characterized in that: Step grooves (220) are symmetrically provided on both sides of the liquid cooling plate (2) and can penetrate the first wide frame installation position (202), the long frame installation position (204) and the second wide frame installation position (203); a long frame step groove (104) corresponding to the step groove (220) is provided on the bottom side of the long frame (101); first wide frame step grooves (105) corresponding to the step groove (220) are provided at both ends of the bottom side of the first wide frame (102); and second wide frame step grooves (106) corresponding to the step groove (220) are provided at both ends of the bottom side of the second wide frame (103).

8. The battery pack packaging device with liquid cooling function according to claim 7, characterized in that: The first wide frame step groove (105), the second wide frame step groove (106), and the long frame step groove (104) are respectively screwed to the step groove via screws.

9. The battery pack packaging device with liquid cooling function according to claim 7, characterized in that: A cell module bearing boss (221) is formed between the liquid cooling plates (2) corresponding to the two stepped grooves (220), the cell module bearing area (201) is located on the upper surface of the cell module bearing boss (221), and the liquid cooling channel group (205) is adjacent to the cell module bearing area (201).

10. The battery pack packaging device with liquid cooling function according to claim 1, characterized in that: The liquid cooling plate (2) and the battery pack frame (1) are made of aluminum alloy.