Thermal management system and new energy vehicles

Abstract

The present application relates to a thermal management system and a new energy vehicle. The system includes: multiple heaters, switching components, heat exchangers and multiple parts to be heated; a heater, a switching component, a heat exchanger and a part to be heated are connected in sequence through pipes to form a heating loop. The above system can improve the charging and power performance of new energy vehicles in low temperature environments, increase the temperature rise rate and improve the customer's car experience.

Description

Technical Field

[0001] The present application relates to the field of new energy vehicles, and in particular to a thermal management system and a new energy vehicle. Background Art

[0002] With the development of the new energy vehicle field, passengers have higher and higher performance requirements for new energy vehicles. How to maintain the power performance of new energy vehicles in low temperature environments has become an urgent problem to be solved.

[0003] At present, under low temperature conditions, the heating of new energy vehicles mainly adopts electric heating or heat pumps, and the heat dissipation of batteries and motors mainly adopts refrigerant cooling. The above work consumes a certain amount of battery power and reduces the power performance of new energy vehicles to a certain extent.

[0004] However, traditional methods suffer from problems such as performance degradation or low temperature rise rate. Summary of the invention

[0005] Based on this, it is necessary to provide a thermal management system and new energy vehicle that can improve the performance of new energy vehicles, increase the temperature rise rate, and enhance customer vehicle experience in response to the above technical problems.

[0006] A thermal management system, the system comprising:

[0007] A plurality of heaters, a switching assembly, a heat exchanger and a plurality of parts to be heated;

[0008] A heater, a switching assembly, a heat exchanger and a heated component are connected in sequence through pipelines to form a heating loop.

[0009] In one embodiment, the switching assembly includes a plurality of three-way proportional valves, and the plurality of three-way proportional valves are connected in sequence through pipelines.

[0010] In one embodiment, the output end of the heater is connected to the first interface of the three-way proportional valve through a pipeline, the second interface of the three-way proportional valve is connected to the input end of the heat exchanger through a pipeline, the output end of the heat exchanger is connected to one end of the heated part through a pipeline, and the other end of the heated part is connected to the input end of the heater through a pipeline;

[0011] The third interfaces of each of the three-way proportional valves are connected in sequence through pipelines.

[0012] In one embodiment, the system further includes a water pump, the output end of the heat exchanger is further connected to one end of the water pump through a pipeline, and the other end of the water pump is connected to one end of the heated component through a pipeline.

[0013] In one embodiment, the input ends of the plurality of heaters are connected in sequence through pipelines.

[0014] In one embodiment, the system further comprises a shut-off valve, and each of the plurality of heaters is connected via the shut-off valve.

[0015] In one embodiment, the multiple heaters are of the same or different types.

[0016] In one embodiment, the plurality of components to be heated are of the same or different types.

[0017] In one embodiment, the plurality of parts to be heated include at least a heater core and a battery pack.

[0018] A new energy vehicle, comprising at least one thermal management system as described above.

[0019] The above-mentioned thermal management system and new energy vehicle, the system includes: multiple heaters, switching components, heat exchangers and multiple parts to be heated; a heater, a switching component, a heat exchanger and a part to be heated are connected in sequence through pipes to form a heating loop. The above-mentioned system can improve the charging and power performance of new energy vehicles in low temperature environments, increase the temperature rise rate and improve the customer's car experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a structural block diagram of a thermal management system in one embodiment;

[0021] Figure 2 is a structural block diagram of a thermal management system in a first working mode in an embodiment;

[0022] Figure 3 is a structural block diagram of a thermal management system in a second working mode in an embodiment;

[0023] Figure 4 It is a structural block diagram of a thermal management system in a third working mode in an embodiment. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0025] A thermal management system, the system comprising:

[0026] A plurality of heaters, a switching assembly, a heat exchanger and a plurality of parts to be heated;

[0027] A heater, a switching assembly, a heat exchanger and a heated component are connected in sequence through pipelines to form a heating loop.

[0028] Specifically, the types of each of the multiple heaters are the same or different. For example, if there are three heaters A, B and C, A and B may be electromagnetic heaters and C may be a resistance heater; or, A, B and C may all be electromagnetic heaters. The types of the multiple parts to be heated are the same or different, wherein the multiple parts to be heated correspond to the multiple heaters one by one, that is, one heater corresponds to one part to be heated.

[0029] A fluid is arranged in the pipeline, and the thermal management system heats the fluid through multiple heaters to meet the power required by multiple heated parts. The switching component is used to switch the outputs of the multiple heaters to meet the needs of different heated parts. The switching component includes multiple three-way proportional valves, and the multiple three-way proportional valves are connected in sequence through pipelines.

[0030] In one embodiment, the output end of the heater is connected to the first interface of the three-way proportional valve through a pipeline, the second interface of the three-way proportional valve is connected to the input end of the heat exchanger through a pipeline, the output end of the heat exchanger is connected to one end of the heated part through a pipeline, and the other end of the heated part is connected to the input end of the heater through a pipeline;

[0031] The third interfaces of each of the three-way proportional valves are connected in sequence through pipelines.

[0032] Specifically, the first interface is the input port of the three-way proportional valve, the second interface is the first output port of the three-way proportional valve, and the third interface is the second output port of the three-way proportional valve. By connecting and blocking the input and output ports of the three-way proportional valve, the heating requirements of different parts to be heated can be realized, so as to meet the requirements of the parts to be heated in a low-temperature environment and improve the power performance of new energy vehicles.

[0033] In one embodiment, the system further includes a water pump, the output end of the heat exchanger is further connected to one end of the water pump through a pipeline, and the other end of the water pump is connected to one end of the heated component through a pipeline.

[0034] Specifically, connecting a water pump at one end of the heat exchanger can increase the transmission rate of the fluid, thereby increasing the heating rate of the heated component.

[0035] In one embodiment, the input ends of the plurality of heaters are connected in sequence through pipelines.

[0036] Specifically, the input ends of multiple heaters are connected in sequence through pipes. When a switching component is used to select energy for the parts to be heated in one or more heating loops, the multiple heaters only heat the fluid in the selected one or more heating loop pipes, thereby increasing the heating rate and further improving the temperature rise efficiency of the parts to be heated.

[0037] In one embodiment, the system further comprises a shut-off valve, and each of the plurality of heaters is connected via the shut-off valve.

[0038] Specifically, a stop valve is provided between the heaters, and the fluid heated by the heaters can be adjusted by opening or closing the stop valve.

[0039] In one embodiment, see Figure 1 The thermal management system includes: an air conditioning system heater, a battery system heater, a first three-way proportional valve, a second three-way proportional valve, a heat exchanger, a first water pump, a second water pump, a stop valve, a battery pack and a heater core.

[0040] The output end of the air conditioning system heater is connected to the first interface of the first three-way proportional valve through a pipeline, the second interface of the first three-way proportional valve is connected to the input end of the heat exchanger through a pipeline, the output end of the heat exchanger is connected to one end of the warm air core through a pipeline, the other end of the warm air core is connected to the input end of the air conditioning system heater through a pipeline, the output end of the heat exchanger is also connected to one end of the first water pump through a pipeline, the other end of the first water pump is connected to one end of the warm air core through a pipeline; the output end of the battery system heater is connected to the first interface of the second three-way proportional valve through a pipeline, the second interface of the second three-way proportional valve is connected to the input end of the heat exchanger through a pipeline, the output end of the heat exchanger is connected to one end of the battery pack through a pipeline, the other end of the battery pack is connected to the input end of the battery system heater through a pipeline, the output end of the heat exchanger is also connected to one end of the second water pump through a pipeline, the other end of the second water pump is connected to one end of the battery pack through a pipeline. The third interface of the first three-way proportional valve is connected to the third interface of the second three-way proportional valve through a pipeline, and a stop valve is connected between the air conditioning system heater and the battery system heater.

[0041] In one embodiment, see Figure 2In a low temperature environment (e.g. -20℃-5℃), during the operation of the new energy vehicle, there is a demand for both air conditioning and heating and battery heating. The shut-off valve is closed, and the third interface of the first three-way proportional valve and the third interface of the second three-way proportional valve are both closed. According to the conventional operation mode of the thermal management system of new energy vehicles, the air conditioning and heating system and the battery heating system are operated independently. That is, the first interface of the first three-way proportional valve is connected to the second interface, and the air conditioning system heater only provides the energy required by the warm air core. Similarly, the first interface of the second three-way proportional valve is connected to the second interface, and the battery system heater only provides the energy required by the battery pack. In one embodiment, see Figure 3 , in a low temperature environment, according to the driving state of new energy vehicles, in low temperature fast charging conditions, and when there is a need to accelerate when driving at low temperature, new energy vehicles require the battery system temperature to be raised to a certain temperature as soon as possible. Under this condition, the shut-off valve is opened, the first interface and the third interface of the first three-way proportional valve are turned on, and the first interface, the second interface and the third interface of the second three-way proportional valve are all turned on, then the air conditioning system heater and the battery system heater in the thermal management system both provide the required energy for the battery pack. That is, the air conditioning system heater transmits the fluid in the pipeline to the battery pack through the first interface of the first three-way proportional valve, the third interface of the first three-way proportional valve, the third interface of the second three-way proportional valve, the second interface of the second three-way proportional valve, the heat exchanger and the second water pump in sequence, and the battery system heater transmits the fluid in the pipeline to the battery pack through the first interface of the second three-way proportional valve, the second interface of the second three-way proportional valve, the heat exchanger and the second water pump in sequence ( Figure 3 part) to fully ensure the battery temperature rise performance.

[0042] Furthermore, when the shut-off valve between the air conditioning system heater and the battery system heater is opened, the air conditioning system heater and the battery system heater only heat the fluid in the heating loop where the battery system heater is located, so as to quickly increase the battery temperature rise rate.

[0043] In one embodiment, see Figure 4 , when the new energy vehicle is stationary or has a strong demand for air conditioning and heating performance, the stop valve is opened, the first interface, the second interface and the third interface of the first three-way proportional valve are all turned on, and the first interface and the third interface of the second three-way proportional valve are turned on, then the air conditioning system heater and the battery system heater in the thermal management system both provide the required energy for the warm split core. That is, the battery system heater transmits the fluid in the pipeline to the warm air core through the first interface of the second three-way proportional valve, the third interface of the second three-way proportional valve, the third interface of the first three-way proportional valve, the second interface of the first three-way proportional valve, the heat exchanger and the first water pump in sequence, while the air conditioning system heater transmits the fluid in the pipeline to the battery pack through the first interface of the first three-way proportional valve, the second interface of the first three-way proportional valve, the heat exchanger and the first water pump in sequence. Figure 4to meet the heating performance requirements of the passenger compartment.

[0044] Furthermore, when the shut-off valve between the air conditioning system heater and the battery system heater is opened, the air conditioning system heater and the battery system heater only heat the fluid in the heating loop where the air conditioning system heater is located to improve the heating performance and meet the heating performance requirements of the passenger compartment.

[0045] The above-mentioned thermal management system and new energy vehicle, the system includes: multiple heaters, switching components, heat exchangers and multiple parts to be heated; a heater, a switching component, a heat exchanger and a part to be heated are connected in sequence through pipes to form a heating loop. This application effectively solves the problems of slow battery heating and poor heating performance of the air-conditioning system in low temperature environments in winter with a small increase in cost. It can improve the charging and power performance of new energy vehicles in low temperature environments, increase the temperature rise rate, and improve the customer's car experience.

[0046] The present application also provides a new energy vehicle, which at least comprises:

[0047] A plurality of heaters, a switching assembly, a heat exchanger and a plurality of parts to be heated;

[0048] A heater, a switching assembly, a heat exchanger and a heated component are connected in sequence through pipelines to form a heating loop.

[0049] In one embodiment, the switching assembly includes a plurality of three-way proportional valves, and the plurality of three-way proportional valves are connected in sequence through pipelines.

[0050] In one embodiment, the output end of the heater is connected to the first interface of the three-way proportional valve through a pipeline, the second interface of the three-way proportional valve is connected to the input end of the heat exchanger through a pipeline, the output end of the heat exchanger is connected to one end of the heated part through a pipeline, and the other end of the heated part is connected to the input end of the heater through a pipeline;

[0051] The third interfaces of each of the three-way proportional valves are connected in sequence through pipelines.

[0052] In one embodiment, the system further includes a water pump, the output end of the heat exchanger is further connected to one end of the water pump through a pipeline, and the other end of the water pump is connected to one end of the heated component through a pipeline.

[0053] In one embodiment, the input ends of the plurality of heaters are connected in sequence through pipelines.

[0054] In one embodiment, the system further comprises a shut-off valve, and each of the plurality of heaters is connected via the shut-off valve.

[0055] In one embodiment, the multiple heaters are of the same or different types.

[0056] In one embodiment, the plurality of components to be heated are of the same or different types.

[0057] In one embodiment, the plurality of parts to be heated include at least a heater core and a battery pack.

[0058] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A thermal management system, characterized in that: The system comprises: an air conditioning system heater, a battery system heater, a first three-way proportional valve, a second three-way proportional valve, a heat exchanger, a first water pump, a second water pump, a stop valve, a battery pack and a heater core; The output end of the air conditioning system heater is connected to the first interface of the first three-way proportional valve through a pipeline, and the second interface of the first three-way proportional valve is connected to an input end of the heat exchanger through a pipeline. One output end of the heat exchanger is also connected to one end of the first water pump through a pipeline, the other end of the first water pump is connected to one end of the warm air core through a pipeline, and the other end of the warm air core is connected to the input end of the air conditioning system heater through a pipeline. The output end of the battery system heater is connected to the first interface of the second three-way proportional valve through a pipeline, and the second interface of the second three-way proportional valve is connected to the other input end of the heat exchanger through a pipeline. The other output end of the heat exchanger is also connected to one end of the second water pump through a pipeline, the other end of the second water pump is connected to one end of the battery pack through a pipeline, and the other end of the battery pack is connected to the input end of the battery system heater through a pipeline. The third interface of the first three-way proportional valve is connected to the third interface of the second three-way proportional valve through a pipeline, and a stop valve is connected between the input end of the air conditioning system heater and the input end of the battery system heater.

2. A new energy vehicle, characterized in that: The new energy vehicle includes the thermal management system described in claim 1.

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