Multi-cycle cooling system and vehicle

Abstract

The utility model belongs to the technical field of vehicle cooling, and particularly discloses a multi-circulation cooling system which comprises a plurality of temperature regulation circulation loops, and each temperature regulation circulation loop comprises a temperature regulator. And the liquid storage bottle is independent of the multiple cooling circulation loops, the liquid storage bottle is connected with the multiple cooling circulation loops, and the liquid storage bottle can be used for supplementing a cooling medium to the multiple cooling circulation loops. The utility model further provides a vehicle. A plurality of cooling circulation loops share one liquid storage bottle, so that the space utilization rate of the vehicle heat management system can be improved, the space occupied by arrangement of the heat management system is reduced, the cost of a single vehicle and the cost of manual assembly are reduced, and the lightweight performance of the whole vehicle is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle cooling, in particular to a multi-cycle cooling system and a vehicle. Background Art

[0002] The appearance shape, grille opening area and engine compartment space size of existing hybrid vehicles are usually the same as those of traditional fuel vehicles. However, compared with traditional fuel vehicles, in addition to the engine in the engine compartment of hybrid vehicles, there are additionally installed and arranged heat-generating and cooling-required components such as a transmission including a drive motor, a charger, and a motor controller. Therefore, it is very difficult to ensure that all components of hybrid vehicles are at appropriate working temperatures.

[0003] The thermal management of new energy vehicles refers to the heat control and regulation technologies involved in new power systems such as electric vehicles, which includes aspects such as heat dissipation, cooling, heating, and temperature control. Basically, the water storage bottles of multiple coolant circulation loops in the new energy vehicles on the market are all separate, with 1 water storage bottle for 1 cooling circulation loop; for example, an extended-range water-cooled battery has 3 cooling circulation loops, namely a motor cooling circulation loop, an engine cooling circulation loop, and a power battery cooling circulation loop. This results in the need to arrange 3 water storage bottles in the engine compartments of most extended-range vehicles, making the engine compartment layout very compact and the pipelines intricate. Moreover, the multiple water storage bottles require higher requirements for the internal structure of the vehicle and are more difficult in circuit design. Summary of the Utility Model

[0004] In view of the above-mentioned disadvantages of the prior art, the purpose of the present utility model is to provide a multi-cycle cooling system and a vehicle, which are used to solve the problem that a single liquid storage bottle is shared by multiple temperature regulation circulation loops in the prior art, resulting in an unreasonable layout structure of the internal cooling circulation system of the vehicle.

[0005] To achieve the above purpose and other related purposes, the present utility model provides a multi-cycle cooling system, which includes multiple temperature regulation circulation loops, and each of the temperature regulation circulation loops includes a temperature regulator.

[0006] A liquid storage bottle, independent of the multiple temperature regulation circulation loops, is connected to the multiple temperature regulation circulation loops, and the liquid storage bottle can be used to supplement cooling medium to the multiple temperature regulation circulation loops.

[0007] Optionally, the multiple temperature regulation circulation loops include a battery water circulation loop, an engine cooling circulation loop, and a motor control cooling circulation loop, and the temperature regulators include a first thermostat arranged in the battery water circulation loop, a second thermostat arranged in the engine cooling circulation loop, and a third thermostat arranged in the motor control cooling circulation loop.

[0008] Optionally, the battery water circulation loop further includes a battery electronic water pump and a power battery. The coolant outlet end of the power battery is connected to the coolant inlet end of the battery electronic water pump. The first thermostat is arranged between the battery electronic water pump and the power battery. The coolant inlet end of the battery electronic water pump is connected to the coolant outlet end of the liquid storage bottle. A first pressure valve is arranged between the battery electronic water pump and the liquid storage bottle.

[0009] Optionally, the first thermostat includes a heater and a cooler. The heater and the cooler are arranged in parallel on the battery electronic water pump. The output ends of the heater and the cooler are arranged in parallel on the power battery. The cooling medium in the battery electronic water pump flows into the power battery through the first thermostat and then recirculates to the battery electronic water pump.

[0010] Optionally, the engine cooling circulation loop further includes an engine water pump, an engine body, and a thermostat arranged in series. The second thermostat is arranged between the thermostat and the engine water pump. The coolant inlet end of the engine water cooling is connected to the coolant outlet end of the liquid storage bottle. A second pressure valve is arranged between the second thermostat and the liquid storage bottle.

[0011] Optionally, the engine cooling circulation loop further includes a warm air loop. The warm air loop includes a warm air core body arranged between the engine body and the engine water pump. The warm air core body is used for heating the vehicle's warm air system.

[0012] Optionally, the motor control cooling loop includes a third thermostat, a motor water pump, a three-in-one module, a controller, and a drive motor arranged in series. The coolant inlet end of the motor water pump is connected to the coolant outlet end of the liquid storage bottle.

[0013] Optionally, a third pressure valve is arranged between the third thermostat and the liquid storage bottle.

[0014] Optionally, a pressure regulator is arranged on the liquid storage bottle. The battery water circulation loop, the engine cooling circulation loop, and the motor control cooling circulation loop are all connected to the pressure regulator.

[0015] The present utility model further provides a vehicle, which includes the above multi-cycle cooling system.

[0016] As described above, a multi-cycle cooling system and a vehicle proposed by the present utility model have the following beneficial effects:

[0017] Compared with the prior art, each cooling cycle system in the present application can perform temperature regulation in its respective circulation loop. By adopting a plurality of temperature regulation circulation loops sharing a common liquid storage bottle, when liquid replenishment is required in their respective cooling cycle systems, the liquid storage bottle is used to supplement the cooling medium, playing an auxiliary role. Therefore, the cost of the entire vehicle interior cooling cycle system is lower, the space utilization rate is higher, and the layout is more concise. Brief Description of the Drawings

[0018] Figure 1 It shows a schematic diagram of the whole in an embodiment of the present utility model;

[0019] Figure 2 It shows the battery water circulation loop in an embodiment of the present utility model;

[0020] Figure 3 It shows the engine cooling circulation loop in an embodiment of the present utility model;

[0021] Figure 4 It shows the motor control cooling circulation loop in an embodiment of the present utility model.

[0022] Description of the Reference Numerals:

[0023] Liquid storage bottle 1, pressure cap 2, first pressure valve 3, battery electronic water pump 4, heater 5, plate heat exchanger 6, cold water side 7, hot water side 8, power battery 9, engine assembly 10, engine water pump 11, engine body 12, thermostat 13, second thermostat 14, electric fan 15, second pressure valve 16, three-way valve 17, heater core 18, four-way valve 19, third thermostat 20, motor water pump 21, three-in-one module 22, controller 23, drive motor 24, third pressure valve 25. Detailed Embodiment

[0024] The following specific examples illustrate the embodiments of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. The present utility model can also be implemented or applied through different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present utility model.

[0025] It should be noted that the illustrations provided in this embodiment only schematically illustrate the basic concept of the present invention. Therefore, only the components related to the present invention are shown in the drawings, rather than being drawn according to the number, shape, and size of the components in actual implementation. The form, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout form may also be more complex. The structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in this technology to understand and read, and are not used to limit the limiting conditions under which the present invention can be implemented. Therefore, they do not have substantial technical significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle", and "one" cited in this specification are only for the convenience of clear narration, and are not used to limit the scope of implementation of the present invention. The change or adjustment of their relative relationship, without substantial change in technical content, should also be regarded as the scope of implementation of the present invention.

[0026] As Figures 1 - 4 shown, the present invention provides a multi-cycle cooling system and a vehicle.

[0027] In an exemplary embodiment, a multi-cycle cooling system includes a plurality of temperature regulation circulation loops, and each of the temperature regulation circulation loops includes a temperature regulator;

[0028] A liquid storage bottle 1, independent of the plurality of temperature regulation circulation loops, is connected to the plurality of temperature regulation circulation loops, and the liquid storage bottle 1 can be used to supplement the cooling medium to the plurality of temperature regulation circulation loops.

[0029] Each cooling circulation system in this embodiment can perform temperature regulation in its respective circulation loop. By using a single liquid storage bottle 1 shared by a plurality of temperature regulation circulation loops, when the cooling medium needs to be replenished in their respective cooling circulation systems, the liquid storage bottle 1 is used to supplement the cooling medium, playing an auxiliary role. Therefore, the cost of the entire vehicle internal cooling circulation system is lower, the space utilization rate is higher, and the layout is more concise.

[0030] In an exemplary embodiment, the plurality of temperature regulation circulation loops include a battery water circulation loop, an engine cooling circulation loop, and a motor control cooling circulation loop. The temperature regulators include a first thermostat disposed in the battery water circulation loop, a second thermostat 14 disposed in the engine cooling circulation loop, and a third thermostat 20 disposed in the motor control cooling circulation loop.

[0031] In this embodiment, by providing temperature regulators in each cooling cycle loop respectively, each cooling cycle loop can adjust its own temperature. Each component in each cooling cycle loop has a connection relationship with each other, forming a cooling loop, and the temperature is adjusted by a thermostat. The temperature adjustment includes heating and cooling.

[0032] Exemplarily, in this embodiment, a pressure regulator is provided on the liquid storage bottle 1, and the battery water circulation loop, the engine cooling circulation loop, and the motor control cooling circulation loop are all connected to the pressure regulator.

[0033] Exemplarily, in this embodiment, the first thermostat includes a heater 5 and a cooler. The heater 5 and the cooler are arranged in parallel on the battery electronic water pump 4, and the output ends of the heater 5 and the cooler are arranged in parallel on the power battery 9. The cooling medium in the battery electronic water pump 4 flows into the power battery 9 through the first thermostat and then recirculates to the battery electronic water pump 4. It should be noted that the first thermostat in this embodiment includes two components, which are respectively used for heating and cooling the cooling medium; the cooler uses a plate heat exchanger 6, the heater 5 uses a water PTC to heat the cooling water, and the cooler uses a pipeline to pass through the cold water side 7 of the plate heat exchanger 6 to realize the cooling of the cooling water. When the environmental temperature is too low and the temperature of the battery cells in the power battery 9 is too low and the battery needs to be heated, the battery electronic water pump 4 works to provide the coolant circulation power and control the water PTC to work to provide a heat source. At this time, the battery electronic water pump 4 guides the coolant into the water PTC to heat the coolant until the target temperature of the battery inlet water temperature T1 is reached, and then enters the power battery 9 through the hot water side 8 of the plate heat exchanger 6 for circulation; when the vehicle is running and the temperature T2 of the battery cells is too high, the battery electronic water pump 4 works to provide the coolant circulation power and the air conditioning system works. At this time, the battery electronic water pump 4 passes the cooling water into the pipeline located on the cold water side 7 of the plate heat exchanger 6, and the heat is taken away by the plate heat exchanger 6 until the target temperature of the battery inlet water temperature T1 is reached; thus, the battery can be heated or cooled to ensure that the battery operates at the optimal working temperature and avoid battery failure.

[0034] Since there are differences in temperature in the battery water circulation loop during operation, it is easy to generate pressure gas or insufficient internal pressure. Therefore, when the pressure in the battery water circulation loop reaches the opening pressure of the pressure regulator, the pressure regulator opens to release pressure and exhaust gas. When the pressure in the battery water circulation loop is negative, the pressure regulator opens to perform back suction to ensure the normal pressure in the battery water circulation loop.

[0035] Meanwhile, in this embodiment, since the first pressure valve 3 is provided, when the pressure in the battery water circulation loop reaches the preset pressure in the first pressure valve 3, it proves that a part of the cooling medium in the battery water circulation loop has been evaporated and the internal cooling medium has been consumed, and replenishment is required. The first pressure valve 3 opens, and the cooling medium in the liquid storage bottle 1 enters the battery water circulation loop through the first pressure valve 3 for replenishment.

[0036] In an exemplary embodiment, the engine cooling circulation loop further includes an engine water pump 11, an engine body 12, and a thermostat 13 connected in series. The second thermostat 14 is arranged between the thermostat 13 and the engine water pump 11. The coolant inlet end of the engine water cooling is connected to the coolant outlet end of the liquid storage bottle 1, and a second pressure valve 16 is provided between the second thermostat 14 and the liquid storage bottle 1.

[0037] In this embodiment, through the provided thermostat 13 and second thermostat 14, the temperature of the engine cooling circulation loop can be cooled. The power provided by the engine water pump 11 is used to perform a cooling cycle on the entire engine cooling circulation loop. Through the provided second pressure valve 16, it is convenient for the liquid storage bottle 1 to replenish the engine cooling circulation loop.

[0038] Exemplarily, in this embodiment, an electric fan 15 is further included. The electric fan 15 is arranged outside the engine assembly 10 to assist in cooling the engine assembly 10.

[0039] Exemplarily, in this embodiment, when the pressure in the engine cooling circulation loop reaches the opening pressure of the pressure regulator, the pressure regulator opens to relieve pressure and exhaust gas. When the pressure in the engine cooling circulation loop is negative, the pressure regulator opens to perform back suction to ensure the normal pressure in the engine cooling circulation loop.

[0040] Exemplarily, the second thermostat 14 in this embodiment is a high-temperature radiator.

[0041] It is worth noting that in this embodiment, due to the provided second pressure valve 16, when the pressure in the engine cooling circulation loop reaches the preset pressure in the second pressure valve 16, a part of the cooling medium in the engine cooling circulation loop has been evaporated and the internal cooling medium has been consumed, and replenishment is required. The second pressure valve 16 opens, and the cooling medium in the liquid storage bottle 1 enters the engine cooling circulation loop through the second pressure valve 16 for replenishment.

[0042] In an exemplary embodiment, the engine cooling circulation loop further includes a warm air circuit. The warm air circuit includes a warm air core 18 arranged between the engine body 12 and the engine water pump 11. The warm air core 18 is used to supply heat to the vehicle's warm air system.

[0043] In this embodiment, since the cooling medium after passing through the engine assembly 10 carries a large amount of heat, in order to make full use of energy, a part of the cooling medium is introduced into the warm air system of the air conditioner to provide heat when the vehicle has a heating demand. After heat exchange in the warm air system, the energy carried by the medium decreases, and it becomes a low-temperature medium, and the medium temperature decreases. Finally, it returns to the engine cooling circulation loop for circulation.

[0044] It should be noted that in this embodiment, a branch is provided in the warm air circuit and is connected to the warm air system through a three-way valve 17. The branch enters the hot water side 8 of the plate heat exchanger 6. When the power battery 9 needs to be heated up, the power battery 9 is heated to make full use of the energy generated by the engine and improve the energy utilization rate. In this embodiment, the engine water pump 11, the branch, the warm air core 18 and the pressure cover 2 are connected through a four-way valve 19.

[0045] In an exemplary embodiment, the motor control cooling circuit includes a third thermostat 20, a motor water pump 21, a three-in-one module 22, a controller 23 and a drive motor 24 connected in series. The coolant inlet end of the motor water pump 21 is connected to the coolant outlet end of the liquid storage bottle 1.

[0046] In this embodiment, when the temperature of any one of the three-in-one module 22, the controller 23, and the drive motor 24 in the vehicle reaches the set cooling start temperature, the motor water pump 21 and the electric fan 15 work to cool the motor control cooling circuit to ensure that the three-in-one temperature, the controller 23, and the drive motor 24 work at the optimal working temperature.

[0047] Exemplarily, a pressure regulator is provided on the liquid storage bottle 1, and the battery water circulation circuit, the engine cooling circulation circuit, and the motor control cooling circulation circuit are all connected to the pressure regulator.

[0048] It should be noted that similarly, when the pressure of the motor control cooling circuit reaches the opening pressure of the pressure regulator, the pressure regulator opens for pressure relief and exhaust. When the pressure of the motor control cooling circuit is negative, the pressure regulator opens for back suction. When the pressure or pressure difference of the motor control cooling circuit reaches the set value of the third pressure valve 25, the third pressure valve 25 opens for liquid filling to ensure that the water circulation system pressure is within the designed range.

[0049] The present invention also provides a vehicle, which includes the above multi-cycle cooling system.

[0050] In summary, by sharing one liquid storage bottle 1 among multiple temperature regulation circulation circuits, the present invention can improve the space utilization rate of the vehicle thermal management system, reduce the space occupied by the layout of the thermal management system, reduce the single-vehicle cost and the manual assembly cost, and improve the vehicle lightweight performance.

[0051] The above embodiments are only illustrative of the principles and effects of the present utility model, rather than limiting the present utility model. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present utility model. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present utility model should still be covered by the claims of the present utility model.

Claims

1. A multi-cycle cooling system, characterized in that, It includes multiple temperature regulation circulation loops, and each of the temperature regulation circulation loops includes a temperature regulator; A liquid storage bottle, independent of the multiple temperature regulation circulation loops, is connected to the multiple temperature regulation circulation loops, and the liquid storage bottle can be used to supplement the cooling medium to the multiple temperature regulation circulation loops.

2. The multi-cycle cooling system according to claim 1, wherein: The multiple temperature regulation circulation loops include a battery water circulation loop, an engine cooling circulation loop, and a motor control cooling circulation loop. The temperature regulator includes a first thermostat disposed in the battery water circulation loop, a second thermostat disposed in the engine cooling circulation loop, and a third thermostat disposed in the motor control cooling circulation loop.

3. The multi-cycle cooling system according to claim 2, characterized in that: The battery water circulation loop further includes a battery electronic water pump and a power battery. The coolant outlet end of the power battery is connected to the coolant inlet end of the battery electronic water pump. The first thermostat is disposed between the battery electronic water pump and the power battery. The coolant inlet end of the battery electronic water pump is connected to the coolant outlet end of the liquid storage bottle. A first pressure valve is provided between the battery electronic water pump and the liquid storage bottle.

4. The multi-cycle cooling system according to claim 3, wherein: The first thermostat includes a heater and a cooler. The heater and the cooler are connected in parallel on the battery electronic water pump. The output ends of the heater and the cooler are connected in parallel to the power battery. The cooling medium in the battery electronic water pump flows into the power battery through the first thermostat and then recirculates to the battery electronic water pump.

5. The multi-cycle cooling system according to claim 2, characterized in that: The engine cooling circulation loop further includes an engine water pump, an engine body, and a thermostat connected in series. The second thermostat is disposed between the thermostat and the engine water pump. The coolant inlet end of the engine water cooling is connected to the coolant outlet end of the liquid storage bottle. A second pressure valve is provided between the second thermostat and the liquid storage bottle.

6. The multi-cycle cooling system according to claim 5, wherein: The engine cooling circulation loop further includes a warm air loop. The warm air loop includes a warm air core disposed between the engine body and the engine water pump. The warm air core is used to supply heat to the vehicle's warm air system.

7. The multi-cycle cooling system according to claim 2, wherein: The motor control cooling loop includes a third thermostat, a motor water pump, a three-in-one module, a controller, and a drive motor connected in series. The coolant inlet end of the motor water pump is connected to the coolant outlet end of the liquid storage bottle.

8. The multi-cycle cooling system according to claim 7, wherein: A third pressure valve is provided between the third thermostat and the liquid storage bottle.

9. The multi-cycle cooling system according to claim 2, wherein: A pressure regulator is provided on the liquid storage bottle. The battery water circulation loop, the engine cooling circulation loop, and the motor control cooling circulation loop are all connected to the pressure regulator.

10. A vehicle, characterized in that: It includes the multi-circulation cooling system according to any one of claims 1-9.

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