Integrated new energy electric vehicle electronic system cooling structure

Abstract

An integrated new energy electric vehicle electronic system cooling structure comprises a Chiller, a water pump, a three-way valve, a regulating valve, an electromagnetic valve, a temperature controller and liquid cooling plates, the liquid cooling plates are arranged on the surfaces of heating components of an intelligent driving system, a multimedia system, an ECU, a vehicle-mounted ODC / DCDC power converter, a vehicle-mounted AC / DC power charger and a high-voltage junction box PUD respectively, and the liquid cooling plates are connected through pipelines. The three-way valve, the water pump and the Chiller form a closed loop, each liquid cooling plate is provided with a temperature sensor, and the temperature sensor is matched with the temperature controller and the adjusting valve to accurately adjust the flow of cooling liquid. Compared with the prior art, the heat exchange efficiency is higher, and the temperature control is more accurate.

Description

Technical Field

[0001] This utility model relates to the field of cooling technology for electronic systems of new energy electric vehicles, and in particular to an integrated cooling structure for electronic systems of new energy electric vehicles. Background Technology

[0002] With the development of new energy vehicles, automotive thermal management systems are becoming increasingly important. Not only do power batteries, electric drive systems, electronic control systems, and air conditioning systems require heat dissipation and cooling, but intelligent driving systems, multimedia systems, ECUs, on-board ODC / DCDC power converters, on-board AC / DC power chargers, and high-voltage junction boxes (PUDs) also require precise temperature control to ensure stable operation and optimal performance.

[0003] Current technologies have achieved good results in thermal management for power batteries, electric drive systems, electronic control systems, and air conditioning systems. However, there is still room for improvement in thermal management for intelligent driving systems, multimedia systems, ECUs, on-board ODC / DCDC power converters, on-board AC / DC power chargers, and high-voltage junction boxes (PUDs). Simply using air cooling, or even natural air cooling, is susceptible to environmental influences, resulting in significant temperature fluctuations, which is detrimental to the stable operation of the system.

[0004] Therefore, there is an urgent need for more advanced heat dissipation technologies to cool the heat-generating components of these systems. Summary of the Invention

[0005] To address the problem that existing thermal management systems for new energy vehicles are easily affected by the environment, resulting in large temperature variations and hindering stable system operation, this invention proposes an integrated cooling structure for the electronic system of new energy electric vehicles.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: an integrated cooling structure for the electronic system of a new energy electric vehicle, including a chiller, a water pump, a three-way valve, a regulating valve, a solenoid valve, a thermostat, and liquid cooling plates. The liquid cooling plates are respectively placed on the surfaces of the heat-generating components of the intelligent driving system, multimedia system, ECU, vehicle ODC / DCDC power converter, vehicle AC / DC power charger, and high-voltage junction box PUD. The liquid cooling plates are connected by pipes and connected to the regulating valve, three-way valve, water pump, and chiller to form a closed loop. Each liquid cooling plate is equipped with a temperature sensor, which, together with the thermostat and regulating valve, precisely adjusts the coolant flow rate to ensure that each heat-generating component operates within the optimal temperature range.

[0007] The Chiller cooling circuit consists of liquid cooling plates, pipes, regulating valves, three-way valves, solenoid valves, water pumps, PTC heaters, and the Chiller itself. It utilizes coolant from the Chiller, which is at a lower temperature, and pumps it into the liquid cooling plates to cool the intelligent driving system, multimedia system, ECU, on-board ODC / DCDC power converter, on-board AC / DC power charger, and high-voltage junction box PUD. The antifreeze, which absorbs heat and its temperature rises, is pumped back into the Chiller by the water pump, and the heat is directly dissipated into the environment through the compressor and condenser.

[0008] The crew cabin heating circuit consists of a liquid cooling plate, pipes, regulating valves, three-way valves, solenoid valves, water pumps, PTC heaters, and a heating system. When the ambient temperature is low, the antifreeze that absorbs heat and increases in temperature is pumped into the crew cabin heating system by the water pump, working in conjunction with the PTC heaters to provide warmth to the crew cabin.

[0009] The power battery heating circuit consists of a liquid cooling plate, regulating valve, three-way valve, solenoid valve, water pump, PTC heater, and power battery heat exchange pipeline. When the ambient temperature is low, the antifreeze with the heat absorption temperature rises is pumped into the power battery pipeline by the water pump, and works with the PTC heater to heat the power battery.

[0010] The cooling pipes of the intelligent driving system, multimedia system, ECU, vehicle ODC / DCDC power converter, vehicle AC / DC power charger, and high-voltage junction box PUD can be connected in parallel or in series as needed.

[0011] The three-way valve is used to switch the operating modes of the Chiller cooling circuit, the passenger compartment heating circuit, and the power battery heating circuit.

[0012] The regulating valve and temperature controller probe are used to control the coolant flow rate of the liquid cooling plates of each heat dissipation component, thereby precisely controlling the temperature of the heat dissipation component.

[0013] The beneficial effects of this invention are:

[0014] 1. This invention solves the problem of uneven flow distribution in the prior art by designing a flow equalization baffle, resulting in higher heat exchange efficiency and more precise temperature control.

[0015] 2. Make full use of waste heat to reduce PTC power consumption. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the Chiller cooling circuit.

[0017] Figure 2 This is a schematic diagram of the crew cabin heating circuit.

[0018] Figure 3 This is a schematic diagram of the heating circuit for the power battery pack.

[0019] The components are labeled as follows: Water pump 1, Intelligent driving system 2, Multimedia system 3, ECU 4, On-board ODC / DODC power converter 5, AC / DC power charger 6, PUD high-voltage junction box 7, Chiller 8, PTC heating system 9, Water pump 10, Passenger compartment heating system 11, Power battery pack 12, Regulating valves F1~F6, Temperature controller probes T1~T6, Solenoid valve P1, Solenoid valve P2. Detailed Implementation

[0020] The technical structure of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0021] Example 1

[0022] This embodiment is an example of the integrated cooling structure for the electronic system of a new energy electric vehicle described in this utility model. It includes a chiller 8, a water pump 1, a three-way valve, regulating valves F1~F6, a solenoid valve P1, a thermostat, and liquid cooling plates. The liquid cooling plates are respectively placed on the surfaces of the heat-generating components of the intelligent driving system 2, the multimedia system 3, the ECU 4, the on-board ODC / DCDC power converter 5, the on-board AC / DC power charger 6, and the PUD high-voltage junction box 7. The liquid cooling plates are connected by pipes and connected to the regulating valves F1~F6, the three-way valve, the water pump 1, and the chiller 8 to form a closed loop. Each liquid cooling plate is equipped with a temperature sensor, which, together with the thermostat and the regulating valves F1~F6, precisely adjusts the coolant flow rate to ensure that each heat-generating component operates within the optimal temperature range.

[0023] like Figure 1 As shown, the Chiller cooling circuit includes a water pump 1, intelligent driving system 2, multimedia system 3, ECU 4, on-board ODC / DCDC power converter 5, on-board AC / DC power charger 6, PUD high-voltage junction box 7, Chiller 8, and corresponding regulating valves F1~F6, and temperature controller probes T1~T6.

[0024] The intelligent driving system 2, multimedia system 3, ECU 4, on-board ODC / DCDC power converter 5, on-board AC / DC power charger 6, and PUD high-voltage junction box 7 are all equipped with liquid cooling plates. These plates have water channels for coolant flow. Low-temperature coolant from the chiller 8 is pumped by water pump 1 into the liquid cooling plates of these systems, carrying away heat and cooling the various heat dissipation components of the intelligent driving system 2 and multimedia system 3. Each heat dissipation component has corresponding regulating valves F1-F6 and temperature controller probes T1-T6 on its corresponding pipes to control the coolant flow rate of the liquid cooling plates, thereby precisely controlling the temperature of the heat dissipation components and maintaining them within their optimal operating temperature range. Example

[0025] like Figure 2 As shown, the passenger compartment heating circuit structure is similar to that of Embodiment 1, except that the Chiller 8 is replaced by a PTC heating system 9, a water pump 10, and a passenger compartment warm air system 11, and is equipped with solenoid valves P1 and P2. This circuit is mainly used in low-temperature environments such as winter. The coolant, which absorbs heat and rises in temperature from the liquid cooling plates of the intelligent driving system 2, multimedia system 3, ECU 4, on-board ODC / DCDC power converter 5, on-board AC / DC power charger 6, and PUD high-voltage junction box 7, flows to the PTC heating system 9 for further heating, and is then sent by the water pump 10 to the passenger compartment warm air system 11 to provide warmth for the occupants. In particular, because the passenger compartment warm air system requires a large amount of heat, the power and flow rate of the water pump 10 are much greater than those of the water pump 1. Therefore, a bypass pipe is provided, and a solenoid valve P1 is installed on the bypass pipe. When the bypass pipe is opened, it can accelerate the coolant circulation of the passenger compartment warm air system and improve the heating capacity.

[0026] Example 3

[0027] like Figure 3 As shown, the structure of the power battery pack heating circuit is similar to that of Embodiment 2, except that the passenger compartment heating system 11 pipe is switched to the power battery pack 12 pipe. The heat from the intelligent driving system 2, multimedia system 3, and other heat-generating components is used to heat the power battery pack 12, reducing the energy consumption of the PTC heating system 9.

[0028] It should be noted here that... Figure 1 , 2 The circulation modes of System 3 and System 4 are switched via a three-way valve. The cooling pipes for heat-generating components such as Intelligent Driving System 2 and Multimedia System 3 are connected in parallel or series, depending on actual needs.

[0029] Working principle and process:

[0030] Coolant at a lower temperature flows through a water pump into the liquid cooling plates of various heat dissipation components, such as the intelligent driving system and multimedia system, to cool these components. The coolant that absorbs heat and rises in temperature is either cooled by a chiller or further heated by a PTC heating system to provide heat to the passenger compartment heating system / power battery pack, thereby achieving a heat exchange cycle.

[0031] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it; those skilled in the art should understand that they can still modify or make equivalent substitutions to the technical solutions described in the foregoing embodiments, but these modifications should be considered within the scope of protection of this utility model.

Claims

1. An integrated cooling structure for the electronic system of a new energy electric vehicle, characterized in that: The system includes a chiller, water pump, three-way valve, regulating valve, solenoid valve, thermostat, and liquid cooling plate. The liquid cooling plate is placed on the surface of the heat-generating components of the intelligent driving system, multimedia system, ECU, vehicle ODC / DCDC power converter, vehicle AC / DC power charger, and high-voltage junction box PUD. The liquid cooling plates are connected by pipes and connected to the regulating valve, three-way valve, water pump, and chiller to form a closed loop. Each liquid cooling plate is equipped with a temperature sensor, which, together with the thermostat and regulating valve, precisely regulates the coolant flow.

2. The integrated cooling structure for new energy electric vehicle electronic system according to claim 1, characterized in that, The Chiller cooling circuit consists of liquid cooling plates, pipes, regulating valves, three-way valves, solenoid valves, water pumps, PTC heaters, and the Chiller itself. It utilizes coolant from the Chiller, which is pumped into each liquid cooling plate to cool the intelligent driving system, multimedia system, ECU, on-board ODC / DCDC power converter, on-board AC / DC power charger, and high-voltage junction box PUD. The antifreeze, whose temperature rises due to heat absorption, is pumped back to the chiller, where the heat is dissipated directly into the environment through the compressor and condenser.

3. The integrated new energy electric vehicle electronic system cooling structure according to claim 1, characterized in that, The crew compartment heating circuit consists of a liquid cooling plate, pipes, regulating valves, three-way valves, solenoid valves, water pumps, PTC heaters, and a heating system. When the ambient temperature is low, the antifreeze, which absorbs heat and increases in temperature, is pumped into the crew cabin heating system by a water pump, and works with the PTC heater to provide warmth to the crew cabin.

4. The integrated new energy electric vehicle electronic system cooling structure according to claim 1, characterized in that, The power battery heating circuit consists of a liquid cooling plate, a regulating valve, a three-way valve, a solenoid valve, a water pump, a PTC heater, and power battery heat exchange pipelines. When the ambient temperature is low, the antifreeze, whose temperature rises due to heat absorption, is pumped into the power battery pipeline by the water pump, and works with the PTC heater to heat the power battery.

5. The integrated new energy electric vehicle electronic system cooling structure according to claim 1, characterized in that, The cooling pipes of the intelligent driving system, multimedia system, ECU, vehicle ODC / DCDC power converter, vehicle AC / DC power charger, and high-voltage junction box PUD can be connected in parallel or in series as needed.

6. The integrated new energy electric vehicle electronic system cooling structure according to claim 1, characterized in that, The three-way valve is used to switch the operating modes of the Chiller cooling circuit, the passenger compartment heating circuit, and the power battery heating circuit.

7. The integrated new energy electric vehicle electronic system cooling structure according to claim 1, characterized in that, The regulating valve and temperature controller probe are used to control the coolant flow rate of the liquid cooling plates of each heat dissipation component, thereby precisely controlling the temperature of the heat dissipation component.

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