Cooling system of battery changing vehicle

Abstract

The utility model discloses a cooling system of a battery changing vehicle, and belongs to the field of cooling of battery changing vehicles. A cooling system of a battery replacing vehicle comprises a lower base plate and an upper base plate and further comprises a cooling pipe arranged between the lower base plate and the upper base plate and used for cooling the upper base plate and the lower base plate. The liquid inlet pipe is fixedly connected to the input end of the cooling pipe, a flow dividing unit is arranged between the liquid inlet pipe and the output end of the cooling pipe, and the flow dividing unit can enable cooling liquid to be discharged into the input end and the output end of the cooling pipe at the same time; the liquid discharge adjusting unit is arranged on the cooling pipe and used for adjusting the liquid discharge position of the cooling pipe; according to the utility model, the problems that the cooling efficiency of a liquid cooling plate is ordinary, the temperature difference between different positions in the battery is large, and the cooling effect of the battery is poor can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling of battery swapping vehicles, in particular to a cooling system for battery swapping vehicles. Background Art

[0002] During the operation of a battery swapping vehicle, it mainly relies on the power battery system for energy supply. During the energy supply process, the power battery generates a large amount of heat. If it is not discharged in time, it will affect the power output of the battery swapping vehicle and the service life of the power battery, and there are also certain safety hazards. Therefore, mainly when the power battery system is operating, it is cooled to ensure its stable operation. The main cooling methods are mainly three types: air cooling, water cooling, and liquid cooling; in order to ensure the stability and safety of the operation of the power battery, the liquid cooling method is mostly used.

[0003] At present, liquid cooling generally installs liquid cooling plates between the power battery packs, and the coolant flows in an S shape inside the liquid cooling plates to cool the liquid cooling plates. The excess heat generated by the battery during operation is cooled by contacting the surface of the liquid cooling plates. Although this method can cool the battery, the cooling efficiency is limited; when the battery works continuously at a high intensity, the temperature of the coolant will continuously increase during the flowing process, resulting in different cooling effects at different positions of the battery, that is, there is a large temperature difference between different positions inside the battery, which will affect the performance of the battery and accelerate the aging of the battery. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the problems in the prior art that the cooling efficiency of the liquid cooling plate is general, it is easy to cause a large temperature difference between different positions inside the battery, and the cooling effect of the battery is not good, and a cooling system for battery swapping vehicles is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A cooling system for battery swapping vehicles includes a lower substrate and an upper substrate, and further includes: a cooling pipe disposed between the lower substrate and the upper substrate for cooling the upper substrate and the lower substrate; a liquid inlet pipe fixedly connected to the input end of the cooling pipe, a flow splitting unit is disposed between the input end and the output end of the liquid inlet pipe and the cooling pipe, and the flow splitting unit can make the input end and the output end of the cooling pipe discharge the coolant simultaneously; a liquid discharge adjusting unit disposed on the cooling pipe for adjusting the liquid discharge position of the cooling pipe.

[0007] In order to improve the cooling effect and cooling efficiency of the device, preferably, the flow splitting unit includes a flow splitter fixedly connected to the liquid inlet pipe, and a flow splitting pipe is communicated between the flow splitter and the output end of the cooling pipe. Among them, the flow splitter is communicated with the liquid inlet pipe, the cooling pipe, and the flow splitting pipe.

[0008] In order to facilitate the adjustment of the flow direction of the coolant, further, the liquid discharge adjustment unit includes a connecting pipe connected to the middle position of the cooling pipe. One end of the connecting pipe away from the cooling pipe is connected to a communicating pipe. One end of the communicating pipe away from the connecting pipe is connected to the output end of the cooling pipe and one end of the shunt pipe away from the liquid inlet pipe. Among them, a first solenoid valve is provided at one end of the communicating pipe close to the connecting pipe, and a second solenoid valve is provided at one end of the communicating pipe close to the shunt pipe.

[0009] In order to facilitate the adjustment of the position of the discharge port of the coolant between the upper substrate and the lower substrate and ensure the stability of the coolant flow, furthermore, a three-way solenoid valve is also included and is arranged at the connection point of the cooling pipe, the shunt pipe and the communicating pipe. The three-way solenoid valve is connected to the cooling pipe, the shunt pipe and the communicating pipe, and the three-way solenoid valve is electrically connected to the second solenoid valve and the first solenoid valve.

[0010] In order to ensure the stability of the cooling pipe during operation and facilitate the installation of the lower substrate and the upper substrate on the battery, preferably, a plurality of groups of mounting holes are also included and are formed through the lower substrate and the upper substrate for fixing between the lower substrate and the upper substrate and fixing the lower substrate and the upper substrate on the battery swapping vehicle.

[0011] In order to improve the heat exchange efficiency between the cooling pipe and the coolant, further, mounting grooves are also included and are formed on the sides of the lower substrate and the upper substrate close to each other. The shape and size of the mounting grooves match the shape and size of the cooling pipe.

[0012] In order to reduce the temperature difference between different positions in the battery, furthermore, connection grooves are formed on the sides of the upper substrate and the lower substrate close to the mounting grooves. The size of the connection grooves matches the size of the connecting pipe, and the connection grooves are located at the central position of the mounting grooves.

[0013] In order to facilitate the recycling of the coolant, further, a liquid discharge pipe is also included and is connected to the communicating pipe. The liquid discharge pipe is located between the first solenoid valve and the second solenoid valve.

[0014] Compared with the prior art, the present utility model provides a cooling system for a battery swapping vehicle, which has the following beneficial effects:

[0015] 1. For this cooling system of the battery swapping vehicle, the entry position of the coolant can be adjusted through the shunt unit and the three-way solenoid valve, which can improve the cooling effect of the lower substrate and the upper substrate on the battery. At the same time, it can reduce the temperature difference between different positions inside the battery during continuous high-intensity operation, and can slow down the aging of the battery while ensuring the stable performance of the battery.

[0016] 2. The coolant replacement vehicle cooling system can adjust the discharge position of the coolant in the cooling pipe through the liquid discharge adjustment unit, which can not only ensure the stability of the coolant flow but also improve the cooling efficiency of the battery.

[0017] 3. The coolant replacement vehicle cooling system can switch the flow direction of the coolant in the cooling pipe through the three-way solenoid valve, and can adjust the cooling efficiency of the lower substrate and the lower substrate. While ensuring the battery cooling effect, it can reduce the loss of the coolant and lower the stability of the coolant after cooling, which is convenient for the subsequent treatment and reuse of the coolant.

[0018] The parts not involved in this device are the same as or can be implemented by the prior art. The utility model can overcome the problems that the cooling efficiency of the liquid cooling plate is average, it is easy to cause a large temperature difference between different positions in the battery, and the cooling effect of the battery is poor. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of a coolant replacement vehicle cooling system proposed by the utility model Figure 1 .

[0020] Figure 2 is a schematic structural diagram of a coolant replacement vehicle cooling system proposed by the utility model Figure 2 .

[0021] Figure 3 is a partial structural schematic diagram of a coolant replacement vehicle cooling system proposed by the utility model.

[0022] Figure 4 is a structural schematic diagram of the lower substrate or the upper substrate of a coolant replacement vehicle cooling system proposed by the utility model.

[0023] In the figure: 1. Lower substrate; 2. Upper substrate; 3. Mounting hole; 4. Mounting groove; 5. Connection groove; 6. Cooling pipe; 7. Liquid inlet pipe; 8. Flow divider; 9. Flow dividing pipe; 10. Connecting pipe; 11. First solenoid valve; 12. Connecting pipe; 13. Three-way solenoid valve; 14. Second solenoid valve; 15. Drain pipe. Detailed Embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0025] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0026] Embodiment:

[0027] Referring to Figures 1 - 4 , a cooling system for a battery swapping vehicle, comprising a lower substrate 1 and an upper substrate 2, the lower substrate 1 and the upper substrate 2 are made of aluminum material, and further comprising a plurality of groups of mounting holes 3 penetrating through the lower substrate 1 and the upper substrate 2 for fixing between the lower substrate 1 and the upper substrate 2 and fixing the lower substrate 1 and the upper substrate 2 on the battery swapping vehicle. It further comprises: a cooling pipe 6 disposed between the lower substrate 1 and the upper substrate 2, the cooling pipe 6 is made of copper material, and the cooling pipe 6 is arranged in an S shape between the lower substrate 1 and the upper substrate 2 for cooling the upper substrate 2 and the lower substrate 1; a liquid inlet pipe 7 fixedly connected to the input end of the cooling pipe 6, the input end of the liquid inlet pipe 7 is communicated with the coolant storage device of the battery swapping vehicle, and a flow dividing unit is arranged between the liquid inlet pipe 7 and the output end of the cooling pipe 6, and the flow dividing unit can make the input end and the output end of the cooling pipe 6 discharge coolant simultaneously; a liquid discharge adjusting unit arranged on the cooling pipe 6 for adjusting the liquid discharge position of the cooling pipe 6.

[0028] Referring to Figures 1 - 3 , the flow dividing unit comprises a flow divider 8 fixedly connected to the liquid inlet pipe 7, and a flow dividing pipe 9 is communicated between the flow divider 8 and the output end of the cooling pipe 6. Among them, the flow divider 8 is communicated with the liquid inlet pipe 7, the cooling pipe 6 and the flow dividing pipe 9. The specific structure of the flow divider 8 can refer to the technical solutions in the prior art, and those skilled in the art can know, which will not be elaborated here, in order to ensure that the amount of coolant flowing into the flow dividing pipe 9 and the cooling pipe 6 is the same after the coolant passes through the flow divider 8.

[0029] Referring to Figure 1 and Figure 3, the liquid discharge regulating unit includes a connecting pipe 10 connected to the middle position of the cooling pipe 6. One end of the connecting pipe 10 away from the cooling pipe 6 is connected to a communicating pipe 12. One end of the communicating pipe 12 away from the connecting pipe 10 is connected to the output end of the cooling pipe 6 and the end of the shunt pipe 9 away from the liquid inlet pipe 7. Among them, a first solenoid valve 11 is provided at one end of the communicating pipe 12 close to the connecting pipe 10, and a second solenoid valve 14 is provided at one end of the communicating pipe 12 close to the shunt pipe 9. The specific structures of the first solenoid valve 11 and the second solenoid valve 14 can refer to the technical solutions in the prior art. Those skilled in the art can know and will not be elaborated here, so as to realize the intelligent control of the equipment.

[0030] Refer to Figure 3 , it also includes a three-way solenoid valve 13 provided at the connection of the cooling pipe 6, the shunt pipe 9 and the communicating pipe 12. The three-way solenoid valve 13 is connected to the cooling pipe 6, the shunt pipe 9 and the communicating pipe 12, and the three-way solenoid valve 13 is electrically connected to the second solenoid valve 14 and the first solenoid valve 11. The three-way solenoid valve 13 can realize one-in and one-out between any two groups of pipes. This is a conventional means in the prior art, so it will not be elaborated. It should be explained that when the three-way solenoid valve 13 connects the shunt pipe 9 and the cooling pipe 6, the second solenoid valve 14 is in the closed state and the first solenoid valve 11 is in the open state. When the three-way solenoid valve 13 connects the cooling pipe 6 and the communicating pipe 12, the second solenoid valve 14 is in the open state and the first solenoid valve 11 is in the closed state. In addition, the position of the second solenoid valve 14 on the communicating pipe 12 is not limited. The best position is close to the side of the liquid discharge pipe 15, so as to reduce the backflow of the coolant in the communicating pipe 12.

[0031] Refer to Figure 4 , it also includes an installation groove 4 opened on the side of the lower substrate 1 and the upper substrate 2 close to each other. The shape and size of the installation groove 4 match the shape and size of the cooling pipe 6. Connection grooves 5 are opened on the side of the upper substrate 2 and the lower substrate 1 close to the installation groove 4. The size of the connection grooves 5 matches the size of the connecting pipe 10. The connection grooves 5 are located at the center of the installation groove 4. By placing the cooling pipe 6 in the installation groove 4, not only can the displacement of the cooling pipe 6 during operation be prevented, but also the contact area between the cooling pipe 6 and the lower substrate 1 and the upper substrate 2 can be increased, thereby improving the cooling of the equipment.

[0032] Refer to Figures 1 - 3 , it also includes a liquid discharge pipe 15 connected to the communicating pipe 12. The liquid discharge pipe 15 is located between the first solenoid valve 11 and the second solenoid valve 14. One end of the liquid discharge pipe 15 away from the communicating pipe 12 is connected to a coolant storage device or a coolant refrigeration device.

[0033] In the present utility model, during operation, when the power output of the battery is relatively stable and small, that is, the heat generated by the battery is less, at this time, the three-way solenoid valve 13 will connect the cooling pipe 6 with the connecting pipe 12, and at the same time control the second solenoid valve 14 to be in the open state and the first solenoid valve 11 to be in the closed state. The coolant enters through the liquid inlet pipe 7 and directly enters the cooling pipe 6, then passes through the connecting pipe 12, and finally is discharged through the liquid discharge pipe 15. It should be noted that since the heat generated by the electromagnetic is less, the temperature of the coolant does not rise significantly during the flow, and the temperature difference between different positions inside the battery will not be large; when the power output of the battery is large, that is, the heat generated by the battery is more, at this time, the three-way solenoid valve 13 will connect the cooling pipe 6 with the shunt pipe 9, and the first solenoid valve 11 is in the open state. After the coolant enters through the liquid inlet pipe 7, under the action of the shunt 8, the coolant will flow equally into the cooling pipe 6 and the shunt pipe 9, and the coolant in the shunt pipe 9 will finally flow to the other end of the cooling pipe 6, so that the coolant enters both ends of the cooling pipe 6 at the same time, and finally flows through the connecting pipe 10 into the connecting pipe 12, and then is discharged through the liquid discharge pipe 15. During this process, the coolant enters both ends of the cooling pipe 6 at the same time. Since the flow distance and time of the coolant between the lower substrate 1 and the upper substrate 2 are short, when the coolant is discharged, its temperature rises less, thus achieving a better cooling effect, and at the same time, the temperature difference between different positions inside the battery can be avoided, ensuring the battery performance while slowing down the aging of the battery.

[0034] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and should be covered by the protection scope of the present utility model.

Claims

1. A battery-swap vehicle cooling system, comprising a lower base plate (1) and an upper base plate (2), characterized in that: Also includes: A cooling pipe (6) disposed between the lower substrate (1) and the upper substrate (2), used to cool the upper substrate (2) and the lower substrate (1); A liquid inlet pipe (7) fixedly connected to the input end of the cooling pipe (6), a flow dividing unit being arranged between the liquid inlet pipe (7) and the output end of the cooling pipe (6), the flow dividing unit being capable of discharging coolant into the input end and the output end of the cooling pipe (6) at the same time; A liquid discharge adjustment unit arranged on the cooling pipe (6) is used to adjust the liquid discharge position of the cooling pipe (6).

2. A battery-swap vehicle cooling system according to claim 1, characterized in that: The flow splitting unit comprises a flow splitter (8) fixedly connected to the liquid inlet pipe (7), and a flow splitter pipe (9) is connected between the flow splitter (8) and the output end of the cooling pipe (6). The diverter (8) is connected to the liquid inlet pipe (7), the cooling pipe (6) and the diverter pipe (9).

3. A battery-swap vehicle cooling system according to claim 2, characterized in that: The liquid discharge regulating unit comprises a connecting pipe (10) connected to the middle position of the cooling pipe (6); one end of the connecting pipe (10) away from the cooling pipe (6) is connected to a connecting pipe (12); the end of the connecting pipe (12) away from the connecting pipe (10) is connected to the output end of the cooling pipe (6) and the end of the shunt pipe (9) away from the liquid inlet pipe (7); A first solenoid valve (11) is provided on one end of the connecting pipe (12) close to the connecting pipe (10), and a second solenoid valve (14) is provided on one end of the connecting pipe (12) close to the diverter pipe (9).

4. A battery-swap vehicle cooling system according to claim 3, characterized in that: It also includes a three-way solenoid valve (13) arranged at the connection point between the cooling pipe (6), the shunt pipe (9) and the connecting pipe (12); the three-way solenoid valve (13) is connected to the cooling pipe (6), the shunt pipe (9) and the connecting pipe (12), and the three-way solenoid valve (13) is electrically connected to the second solenoid valve (14) and the first solenoid valve (11).

5. A battery-swap vehicle cooling system according to claim 1, characterized in that: It also includes a plurality of mounting holes (3) extending through the lower substrate (1) and the upper substrate (2), which are used to fix the lower substrate (1) and the upper substrate (2), and to fix the lower substrate (1) and the upper substrate (2) on the battery-swapping vehicle.

6. A battery-swap vehicle cooling system according to claim 3, characterized in that: It also includes a mounting groove (4) provided on one side of the lower base plate (1) and the upper base plate (2) close to each other, wherein the shape and size of the mounting groove (4) match the shape and size of the cooling pipe (6).

7. A battery-swap vehicle cooling system according to claim 6, characterized in that: A connection groove (5) is provided on one side of the upper base plate (2) and the lower base plate (1) close to the mounting groove (4); the size of the connection groove (5) matches the size of the connecting pipe (10); and the connection groove (5) is located at the center of the mounting groove (4).

8. A battery-swap vehicle cooling system according to claim 3, characterized in that: It also includes a liquid discharge pipe (15) connected to the connecting pipe (12), and the liquid discharge pipe (15) is located between the first solenoid valve (11) and the second solenoid valve (14).

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