Vehicle battery cooling system

Abstract

The utility model discloses a vehicle battery cooling system which comprises a power battery pack, an electromagnetic valve pipeline integration module, a water pump, a conventional cooling system and an emergency cooling system, the outlet end of the power battery pack is connected to one end of the electromagnetic valve pipeline integration module, and the inlet end of the power battery pack is connected to the outlet end of the conventional cooling system; the other end of the electromagnetic valve pipeline integration module is connected to the inlet end of the water pump and the inlet end of the emergency cooling system, and the outlet end of the emergency cooling system is connected to the inlet end of the water pump. And the power battery pack can be switched to be communicated with the conventional cooling system or the emergency cooling system respectively. When the conventional cooling system is started, the power battery pack, the electromagnetic valve pipeline integration module and the water pump are communicated with the conventional cooling system; when the conventional cooling system is shut down and the emergency cooling system is started, the power battery pack, the electromagnetic valve pipeline integration module and the emergency cooling system are communicated with the water pump, and the power battery pack is cooled.

Description

Technical Field

[0001] The utility model belongs to the technical field related to battery cooling, and in particular relates to a vehicle battery cooling system. Background Art

[0002] At present, the battery cooling system of pure electric wide-body mining vehicles, such as Figure 1 and Figure 2 As shown, there are the following disadvantages: (1) Battery high temperature failures are frequent in cold areas in winter: when the ambient temperature is less than -10℃, the refrigeration system pressure is low, the compressor automatically shuts down for protection, and the power battery pack cannot be cooled normally, resulting in battery high temperature failure; (2) The battery cooling system has high energy consumption in winter: the current battery cooling system uses a compression refrigeration cycle to exchange heat with the battery heat dissipation water through a plate heat exchanger, which has high energy consumption and unsatisfactory heat exchange effect. Utility Model Content

[0003] In order to solve the technical problem in the background art that when the temperature of the vehicle battery is low in winter, the refrigeration system is shut down, resulting in a high battery temperature, the purpose of the present utility model is to provide a vehicle battery cooling system that can solve the above problem.

[0004] The technical solution for achieving the purpose of the utility model is: a vehicle battery cooling system, including a power battery pack, a solenoid valve pipeline integrated module, a water pump, a conventional cooling system and an emergency cooling system, the outlet end of the power battery pack is connected to one end of the solenoid valve pipeline integrated module, and the inlet end of the power battery pack is connected to the outlet end of the conventional cooling system; the other end of the solenoid valve pipeline integrated module is respectively connected to the inlet end of the water pump and the inlet end of the emergency cooling system, and the outlet end of the emergency cooling system is connected to the inlet end of the water pump.

[0005] In this solution, a parallel emergency cooling system is added to the conventional cooling system. When the conventional cooling system is shut down, the emergency cooling system can be connected to cool the power battery pack. Specifically, the solenoid valve pipeline integrated module is connected in the structure, and the power battery pack can be switched to be connected to the conventional cooling system or the emergency cooling system. When the conventional cooling system is started, the power battery pack, the solenoid valve pipeline integrated module, the water pump and the conventional cooling system are connected; when the conventional cooling system is shut down and the emergency cooling system is started, the power battery pack, the solenoid valve pipeline integrated module, the emergency cooling system and the water pump are connected to cool the power battery pack. The cooling system in this solution solves the problem that when the temperature of the conventional refrigeration system is low, the compressor will automatically shut down for protection, causing the power battery pack to be unable to be cooled normally, resulting in high temperature failure of the battery. The structure is simple, and only an emergency cooling system needs to be connected in parallel, and a solenoid valve pipeline integrated module similar to a three-way valve is used to switch the pipelines. The conventional cooling system can be connected between the water pump and the power battery pack through a structure similar to a three-way valve, and the connection between the water pump and the power battery pack is not affected when the conventional cooling system is shut down.

[0006] Furthermore, the solenoid valve and piping integrated module includes a first solenoid valve and a second solenoid valve. The first solenoid valve is connected between the water pump inlet and the power battery pack outlet; the second solenoid valve is connected between the power battery pack outlet and the emergency cooling system inlet. When the conventional cooling system is activated, the power battery pack, the first solenoid valve, the water pump, and the conventional cooling system are connected, and the second solenoid valve is closed. When the conventional cooling system is shut down and the emergency cooling system is activated, the power battery pack, the second solenoid valve, the emergency cooling system, and the water pump are connected to cool the power battery pack, and the first solenoid valve is closed.

[0007] Furthermore, the emergency cooling system includes a water radiator, and the second solenoid valve is connected between the outlet of the power battery pack and the inlet of the water radiator. The water radiator is a main component of the emergency cooling system, and conventional equipment is easy to replace and maintain.

[0008] Furthermore, the solenoid valve pipeline integrated module also includes a mounting plate, pipe No. 1, pipe No. 2, pipe No. 3, pipe No. 4, pipe No. 5, pipe No. 6 and pipe No. 7. The first solenoid valve, the second solenoid valve, pipe No. 1 and pipe No. 2 are respectively fixed on the mounting plate. The pipe No. 3 is connected and installed between the pipe No. 1 and the first solenoid valve. The pipe No. 4 is connected and installed between the first solenoid valve and pipe No. 2. The other end of the pipe No. 2 is connected to the power battery pack; the pipe No. 5 is connected and installed between the pipe No. 2 and the second solenoid valve. The pipe No. 6 is connected and installed between the second solenoid valve and the water radiator. The water radiator is connected to the pipe No. 1 through the pipe No. 7. The pipe No. 1 is connected to the water pump inlet. If the ambient temperature is greater than 0°, the conventional cooling system starts, the first solenoid valve opens, the second solenoid valve closes, and the water pump, pipe No. 1, pipe No. 3, the first solenoid valve, pipe No. 4, pipe No. 2 and the power battery pack are connected in sequence; if the ambient temperature is lower than 0°, the conventional cooling system stops and the emergency cooling system starts, the first solenoid valve closes, the second solenoid valve opens, and the water pump, pipe No. 1, pipe No. 7, water radiator, pipe No. 6, the second solenoid valve, pipe No. 5, pipe No. 2 and the power battery pack are connected in sequence.

[0009] Furthermore, the solenoid valve pipeline integrated module also includes a spiral clamp, through which the No. 7 pipe is secured to the mounting plate. The spiral clamp not only facilitates installation on the outer wall of the pipe and provides support, but also has a certain spiral portion that provides elastic support, preventing damage caused by hard contact and extrusion during closure.

[0010] Furthermore, the conventional cooling system includes a compressor, a condenser, and a plate heat exchanger. One end of the plate heat exchanger is respectively connected to the water pump outlet and the compressor inlet, and the other end of the plate heat exchanger is respectively connected to the power battery pack inlet and the condenser outlet. The compressor outlet is connected to the condenser inlet. The components in the conventional cooling system are all conventional cooling components, which facilitates the composition of the conventional cooling system and the replacement and maintenance of the components after damage. The plate heat exchanger has a corresponding structure. When the conventional cooling system is shut down, the water pump, the plate heat exchanger, and the power battery pack can also be connected.

[0011] Furthermore, the conventional cooling system also includes a liquid storage tank, which is installed between the condenser and the plate heat exchanger. The liquid storage tank can filter impurities from the refrigerant flowing through it to prevent the refrigerant containing a large amount of impurities from entering other components and causing damage.

[0012] Furthermore, the conventional cooling system further includes an expansion valve installed between the liquid storage tank and the plate heat exchanger. After throttling and reducing pressure through the expansion valve, the liquid is released to the plate heat exchanger for heat exchange, thereby achieving the purpose of cooling the power battery pack.

[0013] Furthermore, a water pump is connected between the water pump and the power battery pack to increase the flow rate of cooling water in the system.

[0014] By adopting the above technical solution, the utility model has the following beneficial effects:

[0015] (1) In the cooling system of the power battery pack, in addition to the conventional cooling system, an emergency cooling system is added in parallel, and the switching control is performed through the solenoid valve pipeline integrated module. This has solved the problem that when the ambient temperature is below zero, the compressor in the conventional cooling system shuts down for protection, and the power battery pack temperature is too high;

[0016] (2) The solenoid valve pipeline integrated module specifically consists of a first solenoid valve and a second solenoid valve, and the two solenoid valves are respectively connected to two cooling systems and switched as needed;

[0017] (3) The solenoid valve pipeline integrated module also includes a mounting plate and other related connected pipelines, and a spiral clamp is added for better fixation, so that the pipelines of the two cooling systems flow more smoothly;

[0018] (4) In conventional cooling systems, the liquid storage tank plays a role in filtering and reducing the load on the condenser, and the expansion valve throttling and reducing pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings, wherein

[0020] Figure 1 This is a schematic diagram of the structural installation of various components of the existing battery cooling system in the present utility model;

[0021] Figure 2 This is another schematic diagram of the existing battery cooling system structure in the present utility model;

[0022] Figure 3 This is a schematic diagram of the structural installation of various components of the improved battery cooling system in the present invention;

[0023] Figure 4 This is another schematic diagram of the improved battery cooling system structure in the present invention;

[0024] Figure 5 This is a structural diagram of the solenoid valve pipeline integrated module in the utility model.

[0025] The numbers in the accompanying drawings are: 1 power battery pack; 2 water tank; 3 conventional cooling system; 4 emergency cooling system; 5 first solenoid valve; 6 second solenoid valve; 7 water radiator; 8 mounting plate; 9 pipe No. 1; 10 pipe No. 2; 11 pipe No. 3; 12 pipe No. 4; 13 pipe No. 5; 14 pipe No. 6; 15 pipe No. 7; 16 spiral clamp; 17 compressor; 18 condenser; 19 plate heat exchanger; 20 liquid storage tank; 21 expansion valve; 22 water pump; 23 solenoid valve and pipeline integrated module. DETAILED DESCRIPTION

[0026] Example:

[0027] like Figure 3 and Figure 4 As shown, this embodiment provides a vehicle battery cooling system, including a power battery pack 1, a solenoid valve and piping integrated module 23, a water pump 22, a conventional cooling system 3, and an emergency cooling system 4. The outlet of the power battery pack 1 is connected to one end of the solenoid valve and piping integrated module 23, while the inlet of the power battery pack 1 is connected to the outlet of the conventional cooling system 3. The other end of the solenoid valve and piping integrated module 23 is connected to the inlet of the water pump 22 and the inlet of the emergency cooling system 4, respectively. The outlet of the emergency cooling system 4 is connected to the inlet of the water pump 22. The power battery pack 1, the solenoid valve and piping integrated module 23, the water pump 22, the conventional cooling system 3, and the emergency cooling system 4 are connected via pipelines. In this solution, an emergency cooling system 4 is added in parallel to the conventional cooling system 3. When the conventional cooling system 3 is shut down, the emergency cooling system 4 can be connected to cool the power battery pack 1. Specifically, the connection to the solenoid valve and piping integrated module 23 allows the power battery pack 1 to switch between connecting to the conventional cooling system 3 or the emergency cooling system 4. When the conventional cooling system 3 is started, the power battery pack 1, the solenoid valve pipeline integrated module 23, the water pump 22 and the conventional cooling system 3 are connected; when the conventional cooling system 3 is shut down and the emergency cooling system 4 is started, the power battery pack 1, the solenoid valve pipeline integrated module 23, the emergency cooling system 4 are connected and connected to the water pump 22 to cool the power battery pack 1. The cooling system in this solution solves the problem that when the temperature is low in the conventional refrigeration system, the compressor 17 will automatically shut down for protection, causing the power battery pack 1 to be unable to be cooled normally, resulting in a high-temperature battery failure. The structure is simple, and only one emergency cooling system 4 needs to be connected in parallel, and the solenoid valve pipeline integrated module 23 similar to a three-way valve is used to switch the pipeline. The conventional cooling system 3 can be connected between the water pump 22 and the power battery pack 1 through a structure similar to a three-way valve, and the connection between the water pump 22 and the power battery pack 1 will not be affected when the conventional cooling system 3 is shut down.

[0028] Preferably, the solenoid valve and piping integrated module 23 includes a first solenoid valve 5 and a second solenoid valve 6. The first solenoid valve 5 is connected between the inlet of the water pump 22 and the outlet of the power battery pack 1; the second solenoid valve 6 is connected between the outlet of the power battery pack 1 and the inlet of the emergency cooling system 4. When the conventional cooling system 3 is activated, the power battery pack 1, the first solenoid valve 5, the water pump 22, and the conventional cooling system 3 are connected, and the second solenoid valve 6 is closed. When the conventional cooling system 3 is shut down and the emergency cooling system 4 is activated, the power battery pack 1, the second solenoid valve 6, the emergency cooling system 4, and the water pump 22 are connected to cool the power battery pack 1, and the first solenoid valve 5 is closed.

[0029] Preferably, the emergency cooling system 4 includes a water radiator 7, and the second solenoid valve 6 is connected between the outlet end of the power battery pack 1 and the inlet end of the water radiator 7. The water radiator 7 is a main component of the emergency cooling system 4, and conventional equipment is easy to replace and maintain.

[0030] Preferably, the solenoid valve pipeline integrated module 23 further includes a spiral clamp 16, and the No. 7 pipe 15 is fixed to the mounting plate 8 via the spiral clamp 16. The spiral clamp 16 not only facilitates the installation of the clamp on the outer wall of the pipe and plays a supporting role, but also has a certain spiral portion, which plays an elastic supporting role and prevents closing damage caused by hard contact and extrusion.

[0031] Preferably, the conventional cooling system 3 includes a compressor 17, a condenser 18, and a plate heat exchanger 19. One end of the plate heat exchanger 19 is connected to the outlet of the water pump 22 and the inlet of the compressor 17, respectively. The other end of the plate heat exchanger 19 is connected to the inlet of the power battery pack 1 and the outlet of the condenser 18, respectively. The outlet of the compressor 17 is connected to the inlet of the condenser 18. The components in the conventional cooling system 3 are all conventional cooling components, which facilitates the composition of the conventional cooling system 3 and the replacement and maintenance of the components after damage. The plate heat exchanger 19 has a corresponding structure. When the conventional cooling system 3 is shut down, the water pump 22, the plate heat exchanger 19, and the power battery pack 1 can also be connected.

[0032] Preferably, the conventional cooling system 3 further includes a liquid storage tank 20, which is installed between the condenser 18 and the plate heat exchanger 19. The liquid storage tank 20 can filter impurities from the refrigerant flowing through it, preventing refrigerant containing a large amount of impurities from entering other components and causing damage. The conventional cooling system 3 also includes an expansion valve 21, which is installed between the liquid storage tank 20 and the plate heat exchanger 19. After throttling and reducing the pressure through the expansion valve 21, the liquid is released to the plate heat exchanger 19 for heat exchange, achieving the purpose of cooling the power battery pack 1.

[0033] like Figure 5 As shown, the solenoid valve pipeline integrated module 23 also includes a mounting plate 8, a No. 1 pipe 9, a No. 2 pipe 10, a No. 3 pipe 11, a No. 4 pipe 12, a No. 5 pipe 13, a No. 6 pipe 14 and a No. 7 pipe 15. The first solenoid valve 5, the second solenoid valve 6, the No. 1 pipe 9 and the No. 2 pipe 10 are respectively fixed on the mounting plate 8. The No. 3 pipe 11 is connected and installed between the No. 1 pipe 9 and the first solenoid valve 5. The No. 4 pipe 12 is connected and installed between the first solenoid valve 5 and the No. 2 pipe 10. The other end of the No. 2 pipe 10 is connected to the power battery pack 1; the No. 5 pipe 13 is connected and installed between the No. 2 pipe 10 and the second solenoid valve 6. The No. 6 pipe 14 is connected and installed between the second solenoid valve 6 and the water radiator 7. The water radiator 7 is connected to the No. 1 pipe 9 through the No. 7 pipe 15. The No. 1 pipe 9 is connected to the inlet end of the water pump 22. If the ambient temperature is greater than 0°, the conventional cooling system 3 is started, the first solenoid valve 5 is opened, the second solenoid valve 6 is closed, and the water pump 22, the No. 1 pipe 9, the No. 3 pipe 11, the first solenoid valve 5, the No. 4 pipe 12, the No. 2 pipe 10 and the power battery pack 1 are connected in sequence; if the ambient temperature is lower than 0°, the conventional cooling system 3 is shut down, the emergency cooling system 4 is started, the first solenoid valve 5 is closed, the second solenoid valve 6 is opened, and the water pump 22, the No. 1 pipe 9, the No. 7 pipe 15, the water radiator 7, the No. 6 pipe 14, the second solenoid valve 6, the No. 5 pipe 13, the No. 2 pipe 10 and the power battery pack 1 are connected in sequence.

[0034] Working Principle: When the ambient temperature is greater than 0°, the conventional cooling system 3 starts, the first solenoid valve 5 opens, the second solenoid valve 6 closes, and the water pump 22, pipe 9, pipe 3, 11, first solenoid valve 5, pipe 4, 12, pipe 2, 10, and power battery pack 1 are connected in sequence. When the ambient temperature is below 0°, the conventional cooling system 3 shuts down and the emergency cooling system 4 starts, the first solenoid valve 5 closes, the second solenoid valve 6 opens, and the water pump 22, pipe 9, pipe 7, water radiator 7, pipe 6, second solenoid valve 6, pipe 5, pipe 13, pipe 2, 10, and power battery pack 1 are connected in sequence. The two cooling systems can switch freely when the ambient temperatures differ to ensure cooling of the power battery pack 1.

[0035] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. 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 vehicle battery cooling system, characterized in that: The invention comprises a power battery pack (1), a solenoid valve pipeline integrated module (23), a water pump (22), a conventional cooling system (3) and an emergency cooling system (4), wherein the outlet of the power battery pack (1) is connected to one end of the solenoid valve pipeline integrated module (23), and the inlet of the power battery pack (1) is connected to the outlet of the conventional cooling system (3); the other end of the solenoid valve pipeline integrated module (23) is respectively connected to the inlet of the water pump (22) and the inlet of the emergency cooling system (4), and the outlet of the emergency cooling system (4) is connected to the inlet of the water pump (22).

2. A vehicle battery cooling system according to claim 1, characterized in that: The solenoid valve pipeline integrated module (23) comprises a first solenoid valve (5) and a second solenoid valve (6), wherein the first solenoid valve (5) is connected between the inlet end of the water pump (22) and the outlet end of the power battery pack (1); and the second solenoid valve (6) is connected between the outlet end of the power battery pack (1) and the inlet end of the emergency cooling system (4).

3. A vehicle battery cooling system according to claim 2, characterized in that: The emergency cooling system (4) includes a water radiator (7), and the second solenoid valve (6) is connected between the outlet end of the power battery pack (1) and the inlet end of the water radiator (7).

4. A vehicle battery cooling system according to claim 2, characterized in that: The solenoid valve pipeline integrated module (23) further comprises a mounting plate (8), a No. 1 pipe (9), a No. 2 pipe (10), a No. 3 pipe (11), a No. 4 pipe (12), a No. 5 pipe (13), a No. 6 pipe (14) and a No. 7 pipe (15); the first solenoid valve (5), the second solenoid valve (6), the No. 1 pipe (9) and the No. 2 pipe (10) are respectively fixed on the mounting plate (8); the No. 3 pipe (11) is connected to and installed between the No. 1 pipe (9) and the first solenoid valve (5); the No. 4 pipe (12) is connected to The fifth tube (13) is connected to and installed between the second tube (10) and the second solenoid valve (6); the sixth tube (14) is connected to and installed between the second solenoid valve (6) and the water radiator (7); the other end of the water radiator (7) is connected to the first tube (9) through the seventh tube (15); and the first tube (9) is connected to the inlet end of the water pump (22).

5. A vehicle battery cooling system according to claim 4, characterized in that: The solenoid valve pipeline integrated module (23) further comprises a spiral clamp (16), and the No. 7 pipe (15) is fixed to the mounting plate (8) via the spiral clamp (16).

6. The vehicle battery cooling system according to claim 1, characterized in that: The conventional cooling system (3) includes a compressor (17), a condenser (18) and a plate heat exchanger (19), one end of the plate heat exchanger (19) is respectively connected to the outlet end of the water pump (22) and the inlet end of the compressor (17), the other end of the plate heat exchanger (19) is respectively connected to the inlet end of the power battery pack (1) and the outlet end of the condenser (18), and the outlet end of the compressor (17) is connected to the inlet end of the condenser (18).

7. A vehicle battery cooling system according to claim 6, characterized in that: The conventional cooling system (3) further comprises a liquid storage tank (20), which is installed between the condenser (18) and the plate heat exchanger (19).

8. The vehicle battery cooling system according to claim 7, characterized in that: The conventional cooling system (3) further comprises an expansion valve (21), which is installed between the liquid storage tank (20) and the plate heat exchanger (19).

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