Whole vehicle thermal management system and operation machine

Abstract

The utility model belongs to the technical field of thermal management, and particularly relates to a whole vehicle thermal management system and an operation machine. According to the whole vehicle heat management system, heat dissipation modules of the battery heat management module, the air conditioner heat management module and the motor electric control heat management module, water tanks of the battery heat management module and the motor electric control heat management module and control circuits of the heat management modules are properly integrated, the whole vehicle layout space is saved, and the whole vehicle heat management efficiency is improved. Repeated arrangement of the same parts is reduced, and cost is reduced. Meanwhile, according to the whole vehicle thermal management system provided by the invention, distributed arrangement and independent control of part of parts prone to faults are reserved, the risk that multiple functional modules are shut down at the same time due to faults of one part is avoided, and the stability and reliability of the whole vehicle thermal management system are improved.

Description

Technical Field

[0001] The present application belongs to the field of thermal management technology, and in particular, relates to a vehicle thermal management system and an operating machine. Background Art

[0002] At present, developing green energy and reducing carbon emissions have become a global consensus. With the investment of global companies in electric vehicles, construction machinery has also begun to move towards electrification. Compared with passenger cars, the construction machinery industry has the characteristics of long working hours, large vibration, and large environmental dust; compared with traditional engineering vehicles, the thermal management system structure of electric engineering vehicles is more complex, and it works under high voltage, and its reliability is highly tested. In particular, the thermal management system of electric engineering vehicles currently involves many components. Engineers need to consider both the thermal management efficiency and cost issues when designing, and also need to take into account the stability and reliability of the system at the same time, which is often easy to lose sight of one thing while focusing on the other. For example, many manufacturers usually arrange the battery thermal management system, motor electronic control thermal management system and air conditioning system in a dispersed and independent manner, so that the thermal management modules do not affect each other to improve stability, but such an arrangement often has a higher overall cost and lower efficiency; if the thermal management modules are over-integrated, it is easy to cause the risk of multiple thermal management modules being paralyzed and shut down at the same time due to a component failure.

[0003] In view of this, it is necessary to provide a new type of vehicle thermal management system and operating machinery, which can solve the problems of high cost, low efficiency and poor reliability of thermal management systems of electric engineering machinery in the prior art through moderate integration and reasonable layout. Utility Model Content

[0004] In order to solve the problems of high cost, low efficiency and poor reliability of thermal management systems for electric engineering machinery in the prior art, the present application provides a new type of thermal management system for a whole vehicle and a working machine. According to the first aspect of the present application, the present application provides a thermal management system for a whole vehicle, including a battery thermal management module, an air conditioning thermal management module and a motor electronic control thermal management module, wherein the battery thermal management condenser of the battery thermal management module, the air conditioning thermal management condenser of the air conditioning thermal management module and the motor electronic control radiator of the motor electronic control thermal management module are all integrated on a three-in-one radiator; an electronic fan, which is used for heat dissipation of the three-in-one radiator; the battery thermal management module and the motor electronic control thermal management module use two independently controlled water pumps respectively.

[0005] In one embodiment, the battery thermal management module and the motor electronic control thermal management module share the same water tank.

[0006] In one embodiment, the number of the electronic fans is at least 2, and they are independently controlled from each other.

[0007] In one embodiment, the control circuit of the battery thermal management module, the control circuit of the electronic fan, and the vehicle communication circuit are integrally integrated into a battery thermal management all-in-one controller, and the battery thermal management all-in-one controller is installed at the air inlet of the three-in-one radiator.

[0008] In one embodiment, the control circuit of the battery thermal management module includes a battery thermal management water pump control circuit, a battery thermal management compressor control circuit, and a battery thermal management DC-AC conversion device control circuit.

[0009] In one embodiment, the control circuit of the air-conditioning thermal management module and the vehicle communication circuit are integrated into an air-conditioning all-in-one controller, and the air-conditioning all-in-one controller is installed at the air return port of the air-conditioning evaporator fan.

[0010] In one embodiment, the control circuit of the air-conditioning thermal management module includes an air-conditioning thermal management compressor control circuit, an air-conditioning thermal management DC-AC conversion device control circuit, a blower control circuit, and an air-conditioning PTC control circuit.

[0011] In one embodiment, the control circuit of the battery thermal management module, the control circuit of the electronic fan, the control circuit of the air-conditioning thermal management module, and the vehicle communication circuit are integrally integrated into an all-in-one controller.

[0012] In one embodiment, the vehicle thermal management system further includes a vehicle controller, and the vehicle controller is communicatively connected to the battery thermal management module, the motor electric control thermal management module, and the air-conditioning thermal management module.

[0013] According to the second aspect of the present application, the present application further provides a work machine, and the work machine includes the vehicle thermal management system described in any one of the above.

[0014] The vehicle thermal management system provided by the present application integrates the heat dissipation modules of the air-conditioning thermal management module, the battery thermal management module, and the motor electric control thermal management module, uses the same set of electronic fans for heat dissipation, and at the same time sets the motor electric control thermal management module and the battery thermal management module to share a water tank, improving the efficiency of the vehicle thermal management system and the utilization rate of each component. On the other hand, for the water pump with a relatively high failure rate, the present application adopts a distributed layout and independent control, effectively reducing the risk of simultaneous shutdown between the motor electric control thermal management module and the battery thermal management module due to water pump failure problems. In summary, the vehicle thermal management system provided by the present application, through appropriate integration and reasonable layout, to a certain extent has both the cost advantage of integrated thermal management and the reliability advantage of distributed thermal management, reducing costs while taking into account reliability, and solving the technical problems mentioned in the above prior art.

[0015] The operating machinery provided in this application also has the above advantages because it includes the above-mentioned vehicle thermal management system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the implementation regulations or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0017] Figure 1 The schematic diagram of the battery, motor electronic control and air conditioning thermal management module marked with dotted lines;

[0018] Figure 2 Schematic diagram of the circulation loop of the vehicle thermal management system.

[0019] Description of Figure Numbers:

[0020] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings.

[0021] 1-battery thermal management module, 11-battery thermal management water pump, 12-battery pack, 13-heat exchange device, 14-battery thermal management expansion valve, 15-battery thermal management compressor, 16-battery thermal management all-in-one controller, 17-battery thermal management condenser;

[0022] 2-air conditioning thermal management module, 21-PTC (positive temperature coefficient thermistor), 22-air conditioning thermal management expansion valve, 23-evaporation fan, 24-evaporator, 25-air conditioning thermal management compressor, 26 air conditioning thermal management all-in-one controller, 27 air conditioning condenser;

[0023] 3-motor electronically controlled thermal management module, 31 motor electronically controlled thermal management water pump, 32 electronic control device, 33 motor, 34 motor electronically controlled radiator, 35 water tank;

[0024] 4-Three-in-one radiator, 5-Electronic fan, 6-VCU (vehicle control unit). DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the implementation regulations described are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship, movement conditions, etc. between components in a specific posture (as shown in the attached drawings). If this specific posture changes, the directional indications will also change accordingly.

[0027] In addition, in the present utility model, descriptions such as "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two groups, such as two groups, three, etc., unless otherwise specifically defined.

[0028] In the present utility model, unless otherwise clearly specified and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two groups of components or the interaction relationship between two groups of components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] In addition, the technical solutions between various embodiments of the present utility model can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0030] Low-carbon policies and increasingly fierce market competition have prompted the construction machinery industry to become more and more competitive. While reducing costs and increasing efficiency, it is also necessary to consider how to improve the reliability and stability of products. In the thermal management technology of electric engineering vehicles, currently, each manufacturer usually adopts the method of improving the integration of the vehicle's thermal management system to achieve the effect of cost reduction. The core principle behind integrated cost reduction is that one component is used by multiple actuators to reduce the repeated assembly of the same components. However, this integration method often easily brings reliability problems, that is, when the shared component fails, it may cause multiple thermal management modules to stop operating simultaneously. Therefore, how to appropriately integrate and layout the thermal management system to balance cost reduction, efficiency increase, and reliability has become a research hotspot for current construction machinery manufacturers.

[0031] Based on the above problems, the present application provides an exemplary vehicle thermal management system, which can be referred to Figure 1 And Figure 2。The vehicle thermal management system provided by this application includes three thermal management modules, namely, a battery thermal management module, an air-conditioning thermal management module, and an electric motor and electronic control thermal management module. The battery thermal management condenser of the battery thermal management module, the air-conditioning thermal management condenser of the air-conditioning thermal management module, and the electric motor and electronic control radiator of the electric motor and electronic control thermal management module are all integrated on a three-in-one radiator; an electric fan, which is used for dissipating heat from the three-in-one radiator; the battery thermal management module and the electric motor and electronic control thermal management module respectively use two independently controlled water pumps.

[0032] The vehicle thermal management system provided by this application moderately integrates the three thermal management modules. After integration, the same set of electric fans can be used for heat dissipation. Such a setting can reduce and avoid the repeated layout of electric fans. That is, originally at least 3 sets of cooling electric fans need to be set corresponding to the three thermal management modules. After integration in the above manner, only one set of electric fans needs to be set, which can achieve the effect of cost reduction.

[0033] Optionally, to meet the heat dissipation requirements of each heat dissipation module and further improve the utilization rate of the electric fan, at least two electric fans are provided, and different electric fans can be independently controlled. Specifically, the number of electric fans can be set as required according to the required heat dissipation power, but not less than 2. Different electric fans can be independently controlled, so that the electric fan can be further refined and controlled according to the needs of the heat dissipation module. For example, when the heat dissipation modules of the battery, air conditioner, and electric motor and electronic control all need heat dissipation, multiple electric fans can be turned on or off at the same time, or the wind speed and start / stop of different electric fans can be adjusted according to the heat dissipation requirements of different heat dissipation modules to meet the different heat dissipation requirements of different heat dissipation modules.

[0034] On the other hand, in the vehicle thermal management system provided by this application, the battery thermal management module and the electric motor and electronic control thermal management module respectively use two independently controlled water pumps. As a component with a high incidence of faults in the thermal management system, and it is inconvenient to repair or replace, so the vehicle thermal management system provided by this application uses independently controlled water pumps between different thermal management modules to avoid the normal operation of multiple thermal management modules being affected at the same time when a water pump fails, which can improve the stability and reliability of the vehicle thermal management system.

[0035] Optionally, the battery thermal management module and the electric motor and electronic control thermal management module share the same water tank. The water tank in the vehicle thermal management system is only used to store the coolant (water) and does not involve other complex control functions, and the probability of failure is very small. Therefore, the water tank can be integrated, that is, the battery thermal management module and the electric motor and electronic control thermal management module are set to share the same water tank, so that one water tank can be saved, and the effect of further cost reduction can be achieved.

[0036] for reference Figure 2The vehicle thermal management system provided in this application includes three thermal management modules, namely, a battery thermal management module, an air conditioning thermal management module and a motor electronic control thermal management module. Specifically, the battery thermal management module is composed of an internal cooling cycle and an external cooling cycle, wherein the internal cooling cycle is composed of a battery pack, a heat exchange device, a water tank and a battery thermal management water pump, and the external cooling cycle is composed of a battery thermal management compressor, a battery thermal management condenser, a battery thermal management expansion valve and a heat exchange device. When working, the battery thermal management water pump draws coolant (water) from the water tank and transports it to the inside of the battery pack to cool the battery pack. The coolant carrying the heat of the battery pack further exchanges heat with the coolant in the external circulation pipeline in the heat exchange device. After the coolant in the internal circulation exchanges heat and cools down, it flows back to the internal circulation cooling circuit to cool down the battery. The coolant in the external circulation pipeline is cooled down by the battery thermal management condenser and the electronic fan. The air conditioning thermal management module includes an air conditioning evaporator, an evaporating fan, an air conditioning thermal management expansion valve, a PTC (positive temperature coefficient thermistor), an air conditioning thermal management compressor and an air conditioning condenser. The motor electronic control thermal management module includes a motor, an electronic control device, a motor electronic control thermal management water pump, a water tank and a motor electronic control radiator. When working, the motor electronic control water pump draws coolant from the water tank to cool the motor and the electronic control device, and the motor electronic control radiator cools the coolant.

[0037] Please refer to Figure 2 In one embodiment, the battery thermal management module control circuit, the electronic fan control circuit and the vehicle communication circuit are integrated into a battery thermal management all-in-one controller, and the battery thermal management all-in-one controller is installed at the air inlet of the three-in-one radiator.

[0038] The battery thermal management module control circuit, the electronic fan control circuit and the vehicle communication circuit are integrated into the same controller, which is conducive to saving the layout space of the vehicle. After centralized control, the control efficiency can also be improved, and one controller can control multiple functional modules at the same time. Furthermore, the integrated battery thermal management all-in-one controller is installed at the air inlet of the three-in-one radiator, which can make full use of the air inlet function of the three-in-one radiator to dissipate heat for the battery thermal management all-in-one controller.

[0039] Specifically, the battery thermal management module control circuit refers to the control circuit of each specific execution device and functional module in the battery thermal management module, including the control circuit of the battery thermal management water pump, the control circuit of the battery thermal management compressor, and the control circuit of the battery thermal management DC to AC device. In the prior art, the control circuits of the above functional modules are usually arranged separately and independently, which is costly and has low control efficiency. After integration in the manner of this example, not only centralized control is achieved, but also the layout space of the entire vehicle is further saved, achieving the effect of cost reduction.

[0040] On the other hand, referring to the integration method of the battery thermal management module control circuit, the control circuit of the air-conditioning thermal management module can also be appropriately integrated. Specifically, the present application provides an exemplary integration method, integrating the air-conditioning thermal management module control circuit and the vehicle communication circuit into an air-conditioning all-in-one controller, and the air-conditioning all-in-one controller is installed at the return air outlet of the air-conditioning evaporative fan.

[0041] For reference Figure 2 The air conditioning thermal management module control circuit includes an air conditioning thermal management compressor control circuit, an air conditioning thermal management DC to AC device control circuit, a blower control circuit and an air conditioning PTC control circuit. The air conditioning thermal management module control circuit and the vehicle communication circuit are integrated into the air conditioning all-in-one controller, that is, the air conditioning thermal management compressor control circuit, the air conditioning thermal management DC to AC device control circuit, the blower control circuit and the air conditioning PTC control circuit are integrated with the vehicle communication circuit. After integration, the effects of centralized control and improved control efficiency can also be achieved. Furthermore, the integrated air conditioning all-in-one controller is installed at the return air outlet of the air conditioning evaporator fan, and the return air from the return air outlet can be used to dissipate heat from the air conditioning all-in-one controller.

[0042] Optionally, the battery thermal management module control circuit, the electronic fan control circuit, the air conditioning thermal management module control circuit and the vehicle communication circuit are integrated into an all-in-one controller. Compared with the above example, in which the battery thermal management module and the air conditioning thermal management module are separately integrated and controlled, the integration method provided in this embodiment has a higher degree of integration and a more obvious centralized control effect.

[0043] On the other hand, the vehicle thermal management system provided in the present application also includes a vehicle controller, which is communicatively connected to the battery thermal management module, the motor electronic control thermal management module and the air conditioning thermal management module to ensure that the vehicle thermal management system can be normally connected to the vehicle control.

[0044] The present application also provides an operating machine, which includes any of the vehicle thermal management systems described in the above embodiments. Therefore, the operating machine provided by the present application also has the advantages of cost reduction, efficiency improvement, and reliability of the above vehicle thermal management system.

[0045] The above are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A vehicle thermal management system, comprising a battery thermal management module, an air conditioning thermal management module and a motor electronic control thermal management module, characterized in that: The battery thermal management condenser of the battery thermal management module, the air conditioning thermal management condenser of the air conditioning thermal management module, and the motor electronic control radiator of the motor electronic control thermal management module are all integrated into a three-in-one radiator; An electronic fan, which is used for cooling the three-in-one radiator; The battery thermal management module and the motor electronic control thermal management module respectively use two independently controlled water pumps.

2. The vehicle thermal management system according to claim 1, characterized in that: The battery thermal management module and the motor electronic control thermal management module share the same water tank.

3. The vehicle thermal management system according to claim 1, characterized in that: The number of the electronic fans is at least 2, and they are independently controlled from each other.

4. The vehicle thermal management system according to claim 1, characterized in that: The battery thermal management module control circuit, the electronic fan control circuit and the vehicle communication circuit are integrated into a battery thermal management all-in-one controller, and the battery thermal management all-in-one controller is installed at the air inlet of the three-in-one radiator.

5. The vehicle thermal management system according to claim 4, characterized in that: The battery thermal management module control circuit includes a battery thermal management water pump control circuit, a battery thermal management compressor control circuit and a battery thermal management DC to AC device control circuit.

6. The vehicle thermal management system according to claim 1, characterized in that: The air-conditioning thermal management module control circuit and the vehicle communication circuit are integrated in an air-conditioning all-in-one controller, and the air-conditioning all-in-one controller is installed at the return air outlet of the air-conditioning evaporating fan.

7. The vehicle thermal management system according to claim 6, characterized in that: The air conditioning thermal management module control circuit includes an air conditioning thermal management compressor control circuit, an air conditioning thermal management DC to AC device control circuit, a blower control circuit and an air conditioning PTC control circuit.

8. The vehicle thermal management system according to claim 1, characterized in that: The battery thermal management module control circuit, the electronic fan control circuit, the air conditioning thermal management module control circuit and the vehicle communication circuit are integrated into an all-in-one controller.

9. The vehicle thermal management system according to any one of claims 1 to 8, characterized in that: The vehicle thermal management system also includes a vehicle controller, which is communicatively connected to a battery thermal management module, a motor electronic control thermal management module, and an air conditioning thermal management module.

10. A working machine, characterized in that: The operating machine includes the vehicle thermal management system described in any one of claims 1-9.

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