Liquid cooling heat sink structure and multi-directional current distribution method for charging module

Abstract

The present invention discloses a liquid-cooled heat sink structure and a multi-directional flow distribution method for a charging module, which belongs to the technical field related to new energy vehicles. The structure includes a lower liquid cooling plate and an upper liquid cooling plate, wherein the lower liquid cooling plate and the upper liquid cooling plate are fixedly connected by a locking member, and the lower liquid cooling plate and the upper liquid cooling plate are uniformly reserved with through heat dissipation holes inside; the structure also includes: a liquid storage box, which is arranged below the lower liquid cooling plate, wherein a water pump is installed inside the liquid storage box, and the top of the water pump is connected to the lower end surface of the lower liquid cooling plate through an infusion tube; the lower liquid cooling plate and the upper liquid cooling plate are connected to the liquid storage box through an infusion assembly. The liquid-cooled heat sink structure and the multi-directional flow distribution method of the charging module are provided with multiple liquid cooling channels, which transmit liquid from the middle of the liquid cooling plate to the surrounding areas to improve the cooling effect, and the coolant can also be well dissipated during the recovery process. At the same time, the flow rate of the coolant can be adjusted according to the heat dissipation requirements.

Description

Technical Field

[0001] The present invention relates to the technical field related to new energy vehicles, and specifically to a liquid-cooled heat sink structure and a multi-directional current distribution method for a charging module. Background Art

[0002] The charging module is a major component of new energy vehicles. During the charging process and when the vehicle is driving for a long time, the charging module will generate a high amount of heat. Therefore, a liquid-cooled heat sink needs to be provided at the bottom of the charging module for cooling. The liquid-cooled heat sink circulates coolant inside, which can bring out the heat of the charging module and achieve a cooling effect. For example, a vehicle-mounted charger liquid cooling plate with announcement number CN214396451U includes an upper liquid cooling plate and a lower liquid cooling plate; wherein: a flow channel is formed on the lower liquid cooling plate, and the flow channel is respectively connected to a water inlet and a water outlet; a boss is provided in the flow channel; the contact area between the upper liquid cooling plate and the lower liquid cooling plate is sealed and connected to form a closed flow channel space, which mainly solves the spatial limitations of the application of the air-cooled heat dissipation mechanism, and at the same time solves the shortcomings of uneven liquid flow and uneven heat dissipation of the usual liquid cooling plate. It is light in weight and has a good cooling effect.

[0003] For example, the announcement number CN222116569U discloses an automotive wireless charging module with an integrated liquid cooling plate, comprising: a charging module cover and a cold plate, the cold plate being disposed on the outer wall of the charging module cover and used to cool the charging module; the cold plate comprising a cold plate base and a cold plate cover, the cold plate base being disposed on the charging module cover, the cold plate base being provided with a liquid inlet and a liquid outlet, a cooling channel being provided within the cold plate base, the liquid inlet and the liquid outlet being connected to the two ends of the cooling channel respectively, a cold plate cover being disposed on the cold plate base, and the cold plate cover being used to seal the cooling channel. In the automotive wireless charging module with an integrated liquid cooling plate, the liquid cooling plate and the cover are integrated as one body, a 50% ethylene glycol solution is passed through the cooling channel within the liquid cooling plate for cooling, and the entire surface of the wireless charging module can be cooled. Arranging the channels according to the component layout can reduce the heating problem of the coil and heating elements during wireless charging, thereby increasing the stability of wireless charging. However, the above-mentioned liquid cooling plate still has the following disadvantages during actual use:

[0004] 1. Traditional liquid cooling heat sinks are mostly designed with a single channel inside. The coolant flows in a winding pattern within the channel to cool the charging module. However, by the time the coolant reaches halfway, it has already absorbed a significant amount of heat, resulting in a lack of cooling during the second half of the flow. Furthermore, the heat dissipation effect of the heated coolant during the recovery process is poor, resulting in the coolant still containing a high level of heat when it flows back into the coolant storage box, affecting subsequent coolant recycling.

[0005] 2. At the same time, when the coolant circulates inside the traditional liquid cooling heat sink, the flow rate of the coolant cannot be adjusted according to the heat dissipation requirements, and the flow rate of the coolant is always a fixed value.

[0006] In response to the above problems, it is urgent to carry out innovative design based on the original liquid cooling heat sink. Summary of the Invention

[0007] The purpose of the present invention is to provide a liquid-cooled heat sink structure and a multi-directional flow distribution method for a charging module, so as to solve the problem proposed in the above background technology that a single channel is mostly arranged inside the traditional liquid-cooled heat sink, and the heat dissipation effect is poor during the recovery process of the cooling liquid after heating. At the same time, the traditional liquid-cooled heat sink cannot adjust the flow rate of the cooling liquid according to the heat dissipation requirements.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a liquid-cooled heat sink structure for a charging module, comprising a lower liquid-cooled plate and an upper liquid-cooled plate, wherein the lower and upper liquid-cooled plates are fixedly connected by a locking member, and through-holes are uniformly reserved inside the lower and upper liquid-cooled plates, and a liquid-cooling channel is provided on the surface where the lower and upper liquid-cooled plates meet;

[0009] The system further comprises: a liquid storage box, disposed below the lower liquid cooling plate, wherein a water pump is installed inside the liquid storage box, and the top of the water pump is connected to the lower end surface of the lower liquid cooling plate via a liquid infusion pipe, and heat sinks are fixed at equal intervals on the outer wall of the liquid storage box;

[0010] The lower liquid cooling plate and the upper liquid cooling plate are connected to the liquid storage box via an infusion assembly, and the infusion assembly is used to recover the heated cooling liquid and transmit it to the liquid storage box.

[0011] Preferably, the liquid cooling channels are distributed at equal angles between the lower liquid cooling plate and the upper liquid cooling plate, and the liquid cooling channels are curved, and an infusion cavity is provided at one end of the liquid cooling channels that are close to each other. At the same time, the infusion cavity is opened at the center of the lower liquid cooling plate, and the infusion cavity and the infusion tube are connected. By setting up multiple liquid cooling channels, the heat dissipation effect of the liquid cooling plate on the charging module can be improved.

[0012] Preferably, the infusion assembly includes a shunt tube fixed to the sides of the lower liquid cooling plate and the upper liquid cooling plate, and one end of the shunt tube away from the lower liquid cooling plate and the upper liquid cooling plate is fixedly connected to the connecting tube, and a one-way valve is provided at the connection between the shunt tube and the connecting tube, so that the heated cooling liquid can flow to the interior of the connecting tube through the shunt tube.

[0013] Preferably, the connecting pipe is curved, and the liquid cooling channels are interconnected through the shunt pipe and the connecting pipe, and the connecting pipes are interconnected through the collecting pipe and the return pipe. At the same time, the return pipe is fixed between the liquid storage box and the collecting pipe. Setting the connecting pipe to be curved can enable the coolant to be cooled during the recovery process.

[0014] Preferably, the disconnected portion of the collecting pipe is fixedly connected via hollow balls, and the hollow balls are evenly spaced on the collecting pipe, and the hollow balls are made of stainless steel. The provision of the hollow balls can further cool the coolant during the recovery process.

[0015] Preferably, a metal sheet is provided inside the hollow ball, and the edge of the metal sheet is fixedly connected to one end of the elastic rope, and the other end of the elastic rope is fixed to the inner wall of the hollow ball. When the coolant hits the metal sheet, it can drive it to shake through the elastic rope, thereby playing a role in moving the coolant.

[0016] Preferably, a fixed cavity is opened inside the upper liquid cooling plate, and an airbag is pasted on the inner top surface of the fixed cavity, and a guide plate is pasted on the lower end surface of the airbag. At the same time, the two ends of the guide plate slide in contact with the inner wall of the fixed cavity, so that when the high heat of the charging module is transferred to the airbag, it can expand.

[0017] Preferably, a fixing rod passes through the bottom of the upper liquid cooling plate, and the fixing rod and the upper liquid cooling plate are slidably connected, and a connecting box is fixed to the bottom of the fixing rod, and the top of the connecting box is connected to the upper liquid cooling plate through a spring, and the expanded airbag pushes the fixing rod and the connecting box down.

[0018] Preferably, the edge of the connecting box fits and slides with the inner wall of the infusion cavity, the bottom of the connecting box is open, and fixing holes are reserved at equal angles on the side of the connecting box. At the same time, the infusion cavity is connected to the liquid cooling channel through the fixing holes. When the connecting box is lowered to different positions, different flow rates of cooling liquid are transmitted.

[0019] A multi-directional current distribution method for a liquid-cooled heat sink structure of a charging module, the multi-directional current distribution method comprising the following steps:

[0020] Step 1: When a new energy vehicle is charging or driving for a long time, the temperature generated by its charging module is high. When the high heat is transferred to the airbag position through the upper liquid cooling plate, the airbag can be heated and expanded, thereby pushing the fixing rod and the connecting box down, so that the fixing hole is connected to the liquid cooling channel and the infusion cavity. The water pump runs to transfer the coolant in the liquid storage box to the liquid cooling channel, thereby cooling the charging module.

[0021] Step 2: Because the cooling channels are distributed at equal angles, the coolant flows from the center of the cold plate to the surrounding areas, achieving multi-directional flow distribution. This improves the cooling effect and prevents the coolant from flowing in a single channel after being heated, which would otherwise be ineffective.

[0022] Step 3: The heated coolant can flow back to the liquid storage box through the shunt pipe, the connecting pipe, the collecting pipe and the return pipe for reuse, and the coolant can be cooled while flowing in the connecting pipe and the collecting pipe;

[0023] Step 4: When the coolant flows through the collecting pipe, it can impact the metal sheet and vibrate through the elastic rope. The bumps during the car's driving can further drive the metal sheet to vibrate. The metal sheet can stir the coolant in the collecting pipe, which can cool the heated coolant.

[0024] Compared with the existing technology, the present invention has the following advantages: the liquid cooling heat sink structure and multi-directional flow distribution method of the charging module are provided with multiple liquid cooling channels, which transmit liquid from the middle of the liquid cooling plate to the surrounding areas to improve the cooling effect, and the coolant can also be well dissipated during the recovery process. At the same time, the flow rate of the coolant can be adjusted according to the heat dissipation requirements. The specific contents are as follows:

[0025] 1. Through the evenly distributed liquid cooling channels, the coolant is transported from the center of the liquid cooling plate to the surrounding areas, which can absorb the heat generated by the charging module to a greater extent and improve the cooling effect;

[0026] 2. When the coolant passes through the curved connecting pipe, the reflux speed is slowed down, allowing it to dissipate heat during the recovery process. When the coolant flows into the hollow ball through the collecting pipe, the impact of the coolant on the metal sheet can drive the metal sheet to vibrate through the elastic rope. The bumps generated by the vehicle during driving can also drive the metal sheet to vibrate. When the metal sheet vibrates, it has a stirring effect on the recovered coolant, further cooling the coolant.

[0027] 3. The airbag expands due to heat, driving the guide plate downward, which in turn pushes the fixing rod and the connection box downward synchronously, allowing the fixing hole to connect with the liquid cooling channel. This allows the coolant to flow into the liquid cooling channel to dissipate heat from the charging module.

[0028] Furthermore, the heat transferred by the charging module is different, which drives the airbag to expand to different extents and pushes the connection box to descend to different heights, causing the size of the overlap between the fixing hole and the liquid cooling channel to change accordingly. In this way, the flow rate of the coolant flowing into the liquid cooling channel can be controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 This is a schematic cross-sectional structural diagram of the lower liquid cooling plate of the present invention;

[0031] Figure 3 This is a schematic diagram of the connecting pipe structure of the present invention;

[0032] Figure 4 This is a schematic cross-sectional view of the connection box of the present invention;

[0033] Figure 5 This is a schematic diagram of the structure of the airbag after expansion of the present invention;

[0034] Figure 6 This is a schematic diagram of the connection box structure of the present invention;

[0035] Figure 7 This is a schematic diagram of the cross-sectional structure of the upper liquid cooling plate of the present invention;

[0036] Figure 8 This is a schematic diagram of the overall cross-sectional structure of the present invention;

[0037] Figure 9 It is a schematic diagram of the cross-sectional structure of the hollow ball of the present invention.

[0038] In the figure: 1. Lower liquid cooling plate; 2. Upper liquid cooling plate; 3. Locking piece; 4. Heat dissipation hole; 5. Liquid cooling channel; 6. Infusion cavity; 7. Infusion tube; 8. Water pump; 9. Liquid storage box; 10. Heat sink; 11. Diverter tube; 12. Connecting tube; 13. Collecting tube; 14. Hollow ball; 15. Metal sheet; 16. Elastic rope; 17. Return pipe; 18. Fixing cavity; 19. Air bag; 20. Guide plate; 21. Fixing rod; 22. Connecting box; 23. Fixing hole. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] See also Figures 1-9 , the present invention provides the following technical solutions:

[0041] Example 1: In order to solve the problems existing in the prior art, this embodiment adopts the following technical solutions. The liquid-cooled heat sink structure of the charging module includes a lower liquid cooling plate 1 and an upper liquid cooling plate 2. The lower liquid cooling plate 1 and the upper liquid cooling plate 2 are fixedly connected by a locking member 3, and the lower liquid cooling plate 1 and the upper liquid cooling plate 2 are evenly reserved with through heat dissipation holes 4 inside, and a liquid cooling channel 5 is opened on the side where the lower liquid cooling plate 1 and the upper liquid cooling plate 2 are in contact; it also includes: a liquid storage box 9, which is arranged below the lower liquid cooling plate 1, and a water pump 8 is installed inside the liquid storage box 9, and the top of the water pump 8 is connected to the lower end surface of the lower liquid cooling plate 1 through an infusion pipe 7, and heat sinks 10 are fixed to the outer wall of the liquid storage box 9 at equal intervals; the lower liquid cooling plate 1 and the upper liquid cooling plate 2 are connected to the liquid storage box 9 through an infusion component, and the infusion component is used to recover the heated coolant and transmit it to the liquid storage box 9.

[0042] Most existing liquid cooling heat sinks have a single channel inside. The coolant flows in a curved manner in the channel to cool the charging module. However, when the coolant flows halfway, it has absorbed a lot of heat, resulting in the inability to achieve the cooling effect in the second half of the flow. Figure 1-Figure 2 and Figure 8 As shown, the liquid cooling channels 5 are distributed at equal angles between the lower liquid cooling plate 1 and the upper liquid cooling plate 2, and the liquid cooling channels 5 are curved, and an infusion cavity 6 is provided at one end of the liquid cooling channels 5 that are distributed at equal angles and close to each other. At the same time, the infusion cavity 6 is opened at the center of the lower liquid cooling plate 1, and the infusion cavity 6 and the infusion tube 7 are connected; after the water pump 8 is running, the cooling liquid in the liquid storage box 9 can be transferred to the infusion cavity 6 through the infusion tube 7, and then transferred to different liquid cooling channels 5 through the fixing holes 23. Through the liquid cooling channels 5 distributed at equal angles, the cooling liquid is transported from the middle of the liquid cooling plate to the surrounding areas, which can absorb the heat generated by the charging module to a greater extent and improve the cooling effect.

[0043] Example 2: The existing liquid cooling radiator has a poor heat dissipation effect during the recovery process of the coolant after being heated, resulting in the coolant still containing high heat when it flows back into the coolant storage box, affecting the subsequent recycling of the coolant. Therefore, this embodiment adopts the following technical solutions, such as Figure 2-Figure 3 and Figure 8-Figure 9As shown, the infusion assembly includes a shunt tube 11 fixed to the side of the lower liquid cooling plate 1 and the upper liquid cooling plate 2, and the end of the shunt tube 11 away from the lower liquid cooling plate 1 and the upper liquid cooling plate 2 is fixedly connected to the connecting tube 12, and a one-way valve is provided at the connection between the shunt tube 11 and the connecting tube 12; the connecting tube 12 is curved, and the liquid cooling channel 5 is interconnected through the shunt tube 11 and the connecting tube 12, and the connecting tube 12 is interconnected through the collecting tube 13 and the return pipe 17, and the return pipe 17 is fixed to the liquid storage box 9 and the collecting pipe 13; the disconnection of the collecting pipe 13 is fixedly connected by a hollow ball 14, and the hollow balls 14 are evenly spaced on the collecting pipe 13, and the hollow balls 14 are made of stainless steel; a metal sheet 15 is provided inside the hollow ball 14, and the edge of the metal sheet 15 is fixedly connected to one end of the elastic rope 16, and the other end of the elastic rope 16 is fixed to the inner wall of the hollow ball 14; the heated coolant can flow into the connecting pipe 12 from the diverter pipe 11 at different angles, and the coolant in the connecting pipe 12 is bent by the bending The connecting pipe 12 of the structure can slow down the reflux speed of the coolant, allowing it to dissipate heat during the recovery process. When the coolant flows into the interior of the hollow ball 14 through the collecting pipe 13, the impact of the coolant on the metal sheet 15 can drive the metal sheet 15 to shake through the elastic rope 16, and the bumps generated by the vehicle during driving can also drive the metal sheet 15 to shake through the elastic rope 16. When the metal sheet 15 shakes, it has a stirring effect on the recovered coolant. Since the storage space inside the hollow ball 14 is large, the coolant will not completely fill the interior of the hollow ball 14. Therefore, when the coolant is stirred, it can contact the inner wall of other positions of the hollow ball 14. Due to the temperature difference between the inner and outer walls of the hollow ball 14, the temperature of the position not in contact with the coolant is lower. The coolant contacts the inner wall above the hollow ball 14 and absorbs the low temperature of the hollow ball 14, which can further cool the coolant, ensuring that the recovered coolant does not contain high heat. The coolant then flows back to the liquid storage box 9 through the return pipe 17 for recycling.

[0044] Example 3: When the cooling liquid circulates inside the existing liquid cooling heat sink, the flow rate of the cooling liquid cannot be adjusted according to the heat dissipation requirements, and the flow rate of the cooling liquid is always a fixed value. Therefore, this embodiment adopts the following technical solutions, such as Figure 4-Figure 7As shown, a fixed cavity 18 is provided inside the upper liquid cooling plate 2, and an airbag 19 is pasted on the inner top surface of the fixed cavity 18, and a guide plate 20 is pasted on the lower end surface of the airbag 19, and at the same time, both ends of the guide plate 20 slide in contact with the inner wall of the fixed cavity 18; a fixed rod 21 is passed through the bottom of the upper liquid cooling plate 2, and the fixed rod 21 and the upper liquid cooling plate 2 are slidably connected, and a connecting box 22 is fixed to the bottom of the fixed rod 21, and at the same time, the top of the connecting box 22 is connected to the upper liquid cooling plate 2 through a spring; the edge of the connecting box 22 slides in contact with the inner wall of the infusion cavity 6, and the bottom of the connecting box 22 is open, and fixing holes 23 are reserved at equal angles on the side of the connecting box 22, and the infusion cavity 6 is connected to the liquid cooling channel 5 through the fixing hole 23; the liquid cooling plate is installed at the bottom of the charging module of the car, so that after the charging module generates heat, it can be transferred to the fixed cavity 18 through the upper liquid cooling plate 2, and the airbag 1 9 The thermal expansion drives the guide plate 20 to slide down, and then pushes the fixing rod 21 extending into the fixed cavity 18 to slide down. The fixing rod 21 drives the connecting box 22 to slide down synchronously, releasing the blockage of the liquid cooling channel 5, so that the fixing hole 23 can be connected to the liquid cooling channel 5, so that the coolant pumped out by the water pump 8 can flow into the liquid cooling channel 5 to achieve heat dissipation of the charging module. The heat transferred by the charging module is different, which drives the airbag 19 to expand to different extents, and pushes the connecting box 22 to drop to different heights, so that the size of the overlap between the fixing hole 23 and the liquid cooling channel 5 changes accordingly. In this way, the flow rate of the coolant flowing into the liquid cooling channel 5 can be controlled and adjusted accordingly according to the heat dissipation requirements. When the charging module does not need heat dissipation, the airbag 19 returns to a flat state and no longer pushes the fixing rod 21. In this way, the spring resilience can drive the connecting box 22 to rise and re-block the liquid cooling channel 5.

[0045] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A liquid cooling heat sink structure of a charging module, comprising a lower liquid cooling plate (1) and an upper liquid cooling plate (2), wherein the lower liquid cooling plate (1) and the upper liquid cooling plate (2) are fixedly connected via a locking member (3), and through heat dissipation holes (4) are uniformly reserved inside the lower liquid cooling plate (1) and the upper liquid cooling plate (2), and a liquid cooling channel (5) is provided on a surface where the lower liquid cooling plate (1) and the upper liquid cooling plate (2) are in contact with each other; It is characterized in that Also includes: A liquid storage box (9) is arranged below the lower liquid cooling plate (1), a water pump (8) is installed inside the liquid storage box (9), and the top of the water pump (8) is connected to the lower end surface of the lower liquid cooling plate (1) through a liquid infusion pipe (7), and heat sinks (10) are fixed to the outer wall of the liquid storage box (9) at equal intervals; The lower liquid cooling plate (1) and the upper liquid cooling plate (2) are connected to the liquid storage box (9) via an infusion component, and the infusion component is used to recover the heated cooling liquid and transmit it to the liquid storage box (9); The infusion assembly includes a shunt tube (11) fixed to the side of the lower liquid cooling plate (1) and the upper liquid cooling plate (2), and one end of the shunt tube (11) away from the lower liquid cooling plate (1) and the upper liquid cooling plate (2) is fixedly connected to the connecting tube (12), and a one-way valve is provided at the connection between the shunt tube (11) and the connecting tube (12); The connecting pipe (12) is curved, and the liquid cooling channel (5) is connected to the connecting pipe (12) through the shunt pipe (11), and the connecting pipe (12) is connected to the return pipe (17) through the collecting pipe (13), and the return pipe (17) is fixed between the liquid storage box (9) and the collecting pipe (13); The disconnected portion of the collecting pipe (13) is fixedly connected via hollow balls (14), and the hollow balls (14) are evenly spaced on the collecting pipe (13), and the hollow balls (14) are made of stainless steel; A metal sheet (15) is provided inside the hollow ball (14), and the edge of the metal sheet (15) is fixedly connected to one end of an elastic rope (16), and the other end of the elastic rope (16) is fixed to the inner wall of the hollow ball (14).

2. The liquid cooling heat sink structure of the charging module according to claim 1, characterized in that: The liquid cooling channels (5) are distributed at equal angles between the lower liquid cooling plate (1) and the upper liquid cooling plate (2), and the liquid cooling channels (5) are curved. An infusion cavity (6) is provided at one end of the liquid cooling channels (5) that are distributed at equal angles and are close to each other. The infusion cavity (6) is opened at the center of the lower liquid cooling plate (1), and the infusion cavity (6) is connected to the infusion tube (7).

3. The liquid cooling heat sink structure of the charging module according to claim 2, characterized in that: A fixed cavity (18) is provided inside the upper liquid cooling plate (2), and an air bag (19) is adhered to the inner top surface of the fixed cavity (18), and a guide plate (20) is adhered to the lower end surface of the air bag (19), and both ends of the guide plate (20) slide in contact with the inner wall of the fixed cavity (18).

4. The liquid cooling heat sink structure of the charging module according to claim 3, characterized in that: A fixing rod (21) passes through the lower portion of the upper liquid cooling plate (2), and the fixing rod (21) and the upper liquid cooling plate (2) are slidably connected. A connecting box (22) is fixed to the bottom of the fixing rod (21), and the top of the connecting box (22) is connected to the upper liquid cooling plate (2) via a spring.

5. The liquid cooling heat sink structure of the charging module according to claim 4, characterized in that: The edge of the connecting box (22) fits and slides against the inner wall of the infusion cavity (6), the bottom of the connecting box (22) is open, and fixing holes (23) are reserved at equal angles on the side of the connecting box (22), and the infusion cavity (6) is connected to the liquid cooling channel (5) through the fixing holes (23).

6. The multi-directional current distribution method for the liquid cooling heat sink structure of the charging module according to claim 5, characterized in that: The multi-directional current distribution method comprises the following steps: Step 1: When the new energy vehicle is in the process of charging or driving for a long time, the temperature generated by its charging module is high. When the high heat is transferred to the position of the air bag (19) through the upper liquid cooling plate (2), the air bag (19) can be heated and expanded, thereby pushing the fixing rod (21) and the connecting box (22) down, so that the fixing hole (23) is interconnected with the liquid cooling channel (5) and the infusion cavity (6), so that the water pump (8) can be operated to transfer the cooling liquid in the liquid storage box (9) to the liquid cooling channel (5) through the infusion tube (7), thereby achieving cooling of the charging module; Step 2: Since the liquid cooling channels (5) are distributed at equal angles, the coolant is dispersed from the middle of the liquid cooling plate to the surrounding areas when flowing, achieving multi-directional flow distribution, which can improve the cooling effect and avoid the coolant always flowing in a single liquid cooling channel (5) after being heated and failing to achieve the heat dissipation effect; Step 3: The heated coolant can be returned to the liquid storage box (9) through the shunt pipe (11), the connecting pipe (12), the collecting pipe (13) and the return pipe (17) for reuse, and the coolant can be cooled while flowing in the connecting pipe (12) and the collecting pipe (13); Step 4: When the coolant flows through the collecting pipe (13), it can impact the metal sheet (15) and cause it to vibrate through the elastic rope (16). The bumps during the driving of the car can further drive the metal sheet (15) to vibrate. The metal sheet (15) can move the coolant in the collecting pipe (13), thereby cooling the heated coolant.

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