Integrated modular thermal management system and device for pure electric vehicle

Abstract

The invention relates to an integrated module type heat management system and device for a pure electric vehicle. The integrated module type heat management system comprises a first integrated valve, a second integrated valve, an inner heat release branch, an inner heat absorption branch and a first outer heat exchange branch, the second integrated valve comprises an eight-way valve, a battery branch, a motor branch and a second outer heat exchange branch, wherein the battery branch, the motor branch and the second outer heat exchange branch are connected into the eight-way valve. According to the heat management system, two sets of pile-up valves are arranged, an inner heat exchange channel is arranged between the two sets of pile-up valves, one set of pile-up valves is used for being connected with an inner heat release branch, an inner heat absorption branch and a first outer heat exchange branch, and the other set of pile-up valves is used for being connected with a battery branch, a motor branch and a second outer heat exchange branch; according to the integrated valve, the six heat absorption / release units are subjected to heat exchange in multiple combinations through integrated arrangement, the complex heat utilization requirement is met, energy saving is facilitated, endurance is improved, a plurality of pipelines and valves are integrated in the integrated valve, the space optimization effect is improved, and space layout of an automobile is facilitated.

Description

Technical Field

[0001] The present invention belongs to the technical field of vehicle air - conditioning systems, and particularly relates to an integrated modular thermal management system and device for pure electric vehicles. Background Art

[0002] In order to improve the endurance of new energy vehicles, their thermal management systems need to achieve high - efficiency energy conservation and energy reuse. The thermal management system realizes waste heat recovery under various mode requirements by setting up complex medium flow channels, saving energy consumption and significantly increasing the endurance mileage.

[0003] For the thermal management system, if there are too many heat exchange modes, although the heat utilization rate increases, a large number of complex medium flow channels are required to support it. A large number of valves and pipelines are needed for on - off control during design. The thermal management systems in the prior art are not conducive to integration, resulting in a large amount of space occupation and being not conducive to the simplification of vehicle layout. Summary of the Invention

[0004] The purpose of the present invention is to provide an integrated modular thermal management system and device for pure electric vehicles to solve the above problems.

[0005] The present invention realizes the above - mentioned purpose through the following technical solutions:

[0006] An integrated modular thermal management system for pure electric vehicles, comprising

[0007] Integrated valve one and an internal heat - release branch, an internal heat - absorption branch, and an external heat - exchange branch one connected to the integrated valve one;

[0008] Integrated valve two, which includes an eight - way valve and a battery branch, a motor branch, and an external heat - exchange branch two connected to the eight - way valve;

[0009] Among them, the integrated valve one includes a plate heat exchanger, several solenoid valves for controlling the on - off of the flow channel, an electronic expansion valve, and a check valve. The plate heat exchanger includes a first flow channel and a second flow channel. The first flow channel is used to communicate with one or more of the internal heat - release branch, the internal heat - absorption branch, and the external heat - exchange branch one. The second flow channel is used to communicate with the eight - way valve and then communicate with one or more of the battery branch, the motor branch, and the external heat - exchange branch two to match the heat absorption / release requirements between each branch.

[0010] As a further optimized solution of the present invention, the internal heat - release branch includes a compressor and an internal condenser arranged in the passenger compartment; the internal heat - absorption branch includes an evaporator arranged in the passenger compartment and an electronic expansion valve one arranged at the inlet end of the evaporator; the external heat - exchange branch one includes a wind heat exchanger.

[0011] As a further optimization scheme of the present invention, the integrated valve 1 also includes a gas-liquid separator, solenoid valve 1, solenoid valve 2, electronic expansion valve 2, electronic expansion valve 3, electronic expansion valve 4, one-way valve 1, one-way valve 2, and one-way valve 3.

[0012] As a further optimization scheme of the present invention, the outlet end of the internal condenser is connected to the integrated valve 1 and then divided into two paths and respectively connected to the inlet end of the solenoid valve 1 and the inlet end of the electronic expansion valve 3. The outlet end of the electronic expansion valve 3 is connected to the inlet end of the wind heat exchanger. The outlet end of the solenoid valve 1 is divided into two paths and respectively connected to the electronic expansion valve 1 and the electronic expansion valve 2. Among them, the electronic expansion valve 2 is arranged at the inlet end of the first flow channel of the plate heat exchanger. The outlet end of the evaporator is connected to the integrated valve 1 and then passes through the one-way valve 1 to merge with the outlet end of the first flow channel and then enter the inlet end of the gas-liquid separator. The outlet end of the gas-liquid separator is connected to the inlet end of the compressor. The outlet end of the wind heat exchanger is connected to the integrated valve 1 and then connected to the outlet end of the solenoid valve 1 through the one-way valve 3. The outlet end of the compressor is also provided with a branch path to directly connect to the inlet end of the electronic expansion valve 4. The outlet end of the electronic expansion valve 4 is connected to the inlet end of the gas-liquid separator, and continues to be provided with a branch path connected to the one-way valve 2 and the solenoid valve 2. The outlet of the solenoid valve 2 is connected to the inlet of the one-way valve 3.

[0013] As a further optimization scheme of the present invention, the eight-way valve includes valve port one to valve port eight, wherein the second flow channel of the plate heat exchanger is connected to valve port seven and valve port eight, wherein the outlet end of valve port seven is also provided with a medium pump one; the battery branch is connected to valve port five and valve port six; the motor branch is connected to valve port three and valve port four, and the outlet end of valve port three is also provided with a medium pump two; the external heat exchange branch two is connected to valve port one and valve port two.

[0014] As a further optimization solution of the present invention, the motor branch includes a front motor branch and a rear motor branch connected in parallel, and the rear motor branch is further connected in series with a control unit cooling path.

[0015] As a further optimization solution of the present invention, the second external heat exchange branch is a water tank heat exchanger, and the management system also includes an expansion kettle, which is respectively connected to the second external heat exchange branch, valve port three and valve port seven.

[0016] On the other hand, in order to apply the integrated modular thermal management system for pure electric vehicles described in any of the above, the present invention also proposes an integrated modular thermal management device, including a substrate and an integrated valve one and an integrated valve two provided on the substrate. Among them, a plate heat exchanger is provided below the substrate, and the second flow channel of the plate heat exchanger is directly connected to an octagonal valve. A number of channel grooves are provided on the substrate. Among them, the channel grooves include a number of vertical grooves for installing electronic expansion valves and solenoid valves. The vertical grooves are divided into upper and lower sections according to before and after the valve. Communication grooves are also provided between the upper sections of each vertical groove and between the upper and lower sections for intercommunication. One-way valves are provided in the vertical grooves or connection grooves. The channel grooves also include a number of interfaces for communicating with the outside.

[0017] As a further optimized solution of the present invention, the interfaces include an interface one and an interface two for communicating the two ends of the internal heat release branch, an interface four and an interface five for connecting the internal heat absorption branch, and an interface six and an interface seven for connecting the external heat exchange branch one.

[0018] The beneficial effects of the present invention are as follows:

[0019] By setting two groups of integrated valves and arranging an internal heat exchange channel between the two groups of integrated valves, one group of integrated valves is used to connect the internal heat release branch, the internal heat absorption branch, and the external heat exchange branch one, while the other group of integrated valves is used to connect the battery branch, the motor branch, and the external heat exchange branch two. Through the integrated setting, various combinations of heat exchange are carried out for six groups of heat absorption / heat release units to meet complex heat utilization requirements, which is beneficial to saving energy and improving endurance. And the integrated valve integrates multiple pipelines and valves, improving the space optimization effect and being beneficial to the space layout of the vehicle. Description of the Drawings

[0020] Figure 1 is a schematic diagram of the thermal management system of the present invention;

[0021] Figure 2 is a schematic diagram of Mode One of the present invention;

[0022] Figure 3 is a schematic diagram of Mode Two of the present invention;

[0023] Figure 4 is a schematic diagram of Mode Three of the present invention;

[0024] Figure 5 is a schematic diagram of Mode Four of the present invention;

[0025] Figure 6 is a schematic diagram of Mode Five of the present invention;

[0026] Figure 7 is a schematic diagram of Mode Six of the present invention;

[0027] Figure 8It is a schematic diagram of Mode Seven of the present invention;

[0028] Figure 9 It is a schematic diagram of Mode Eight of the present invention;

[0029] Figure 10 It is a schematic diagram of Mode Nine of the present invention;

[0030] Figure 11 It is a schematic diagram of Mode Ten of the present invention;

[0031] Figure 12 It is a schematic diagram of Mode Eleven of the present invention;

[0032] Figure 13 It is a schematic diagram of Mode Twelve of the present invention;

[0033] Figure 14 It is a schematic diagram of Mode Thirteen of the present invention;

[0034] Figure 15 It is a schematic diagram of Mode Fourteen of the present invention;

[0035] Figure 16 It is a front perspective view of the thermal management device of the present invention;

[0036] Figure 17 It is a top view of the thermal management device of the present invention;

[0037] Figure 18 It is a bottom view of the thermal management device of the present invention;

[0038] Figure 19 It is a rear view of the thermal management device of the present invention;

[0039] Figure 20 It is a left axonometric view of the thermal management device of the present invention;

[0040] Figure 21 It is of the present invention Figure 17 Cross-sectional view taken along line A-A;

[0041] Figure 22 It is of the present invention Figure 17 Cross-sectional view taken along line B-B;

[0042] Figure 23 It is of the present invention Figure 17 Cross-sectional view taken along line C-C;

[0043] Figure 24 It is of the present invention Figure 17 Cross-sectional view taken along line D-D;

[0044] Figure 25 It is of the present invention Figure 17 Cross-sectional view taken along line E-E;

[0045] In the figure: 1. Internal heat release branch; 11. Compressor; 12. Internal condenser; 13. Interface 1; 14. Interface 2; 15. Interface 3; 2. Internal heat absorption branch; 21. Evaporator; 22. Electronic expansion valve 1; 23. Interface 4; 24. Interface 5; 3. External heat exchange branch 1; 31. Wind heat exchanger; 32. Interface 6; 33. Interface 7; 4. Integrated valve 1; 41. Plate heat exchanger; 42. Gas-liquid separator; 43. Electronic expansion valve 2; 44. Electronic expansion valve 3; 45. Electronic expansion valve 4; 46. Check valve 1; 47. Check valve 2; 48. Check valve 3; 49. Solenoid valve 1; 410. Solenoid valve 2; 5. Integrated valve 2; 51. Eight-way valve; 52. Medium pump 1; 53. Medium pump 2; 54. Interface 8; 55. Filling port; 6. Battery branch; 7. Motor branch; 71. Front motor shunt; 72. Rear motor shunt; 73. Control unit cooling path; 8. External heat exchange branch 2; 9. Expansion water kettle; 10. Substrate;

[0046] L1 to L8 refer to valve ports 1 to 8 of the eight-way valve. Specific implementation mode

[0047] The present application will be further described in detail below with reference to the accompanying drawings. It is necessary to point out here that the following specific implementation modes are only used to further illustrate the present application and cannot be understood as limiting the protection scope of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0048] Embodiment 1

[0049] As Figure 1 shown, a modular integrated thermal management system for pure electric vehicles includes

[0050] an integrated valve 1 4 and an internal heat release branch 1, an internal heat absorption branch 2, and an external heat exchange branch 1 3 connected to the integrated valve 1 4;

[0051] an integrated valve 2 5, which includes an eight-way valve 51 and a battery branch 6, a motor branch 7, and an external heat exchange branch 2 8 connected to the eight-way valve 51;

[0052] Among them, the integrated valve 1 4 includes a plate heat exchanger 41, several solenoid valves, electronic expansion valves, and check valves for controlling the on / off of flow channels. The plate heat exchanger 41 includes a first flow channel and a second flow channel. The first flow channel is used to communicate with one or more of the internal heat release branch 1, the internal heat absorption branch 2, and the external heat exchange branch 1 3, and the second flow channel is used to communicate with the eight-way valve 51 and then communicate with one or more of the battery branch 6, the motor branch 7, and the external heat exchange branch 2 8 to match the heat absorption / heat release requirements between the branches.

[0053] The internal heat-releasing branch 1 includes a compressor 11 and an internal condenser 12 disposed in the passenger compartment; the internal heat-absorbing branch 2 includes an evaporator 21 disposed in the passenger compartment and an electronic expansion valve 22 disposed at the inlet end of the evaporator 21; the external heat-exchanging branch 1 3 includes a wind heat exchanger 31.

[0054] The integrated valve 1 4 further includes a gas-liquid separator 42, a solenoid valve 1 49, a solenoid valve 2 410, an electronic expansion valve 2 43, an electronic expansion valve 3 44, an electronic expansion valve 4 45, a check valve 1 46, a check valve 2 47, and a check valve 3 48.

[0055] The outlet end of the internal condenser 12 is connected to the integrated valve 1 4 and then bifurcates into two paths and is respectively connected to the inlet end of the solenoid valve 1 49 and the inlet end of the electronic expansion valve 3 44. The outlet end of the electronic expansion valve 3 44 is communicated with the inlet end of the wind heat exchanger 31. The outlet end of the solenoid valve 1 49 bifurcates into two paths and is respectively communicated with the electronic expansion valve 1 22 and the electronic expansion valve 2 43. Among them, the electronic expansion valve 2 43 is disposed at the inlet end of the first flow channel of the plate heat exchanger 41. The outlet end of the evaporator 21 is connected to the integrated valve 1 4 and then passes through the check valve 1 46 and converges with the outlet end of the first flow channel and then enters the inlet end of the gas-liquid separator 42. The outlet end of the gas-liquid separator 42 is communicated with the inlet end of the compressor 11. The outlet end of the wind heat exchanger 31 is connected to the integrated valve 1 4 and then is communicated with the outlet end of the solenoid valve 1 49 through the check valve 3 48. The outlet end of the compressor 11 is also provided with a branched path directly connected to the inlet end of the electronic expansion valve 4 45. The outlet end of the electronic expansion valve 4 45 is communicated with the inlet end of the gas-liquid separator 42, and a branched path is further provided to connect to the check valve 2 47 and the solenoid valve 2 410. The outlet of the solenoid valve 2 410 is communicated with the inlet of the check valve 3 48.

[0056] The eight-way valve 51 includes valve ports L1 to L8. Among them, the second flow channel of the plate heat exchanger 41 is communicated with the valve port L7 and the valve port L8. Among them, a medium pump 1 52 is further disposed at the outlet end of the valve port L7; the battery branch 6 is communicated to the valve ports L5 and L6; the motor branch 7 is communicated to the valve ports L3 and L4, and a medium pump 2 53 is further disposed at the outlet end of the valve port L3; the external heat-exchanging branch 2 8 is communicated to the valve ports L1 and L2.

[0057] The motor branch 7 includes a parallel front motor branch 71 and a rear motor branch 72, and a control unit cooling path 73 is also connected in series on the rear motor branch 72.

[0058] The external heat-exchanging branch 2 8 is a water tank heat exchanger. The management system further includes an expansion water tank 9, and the expansion water tank 9 is respectively communicated with the external heat-exchanging branch 2 8, the valve port L3, and the valve port L7.

[0059] In addition, in order to monitor the temperature and pressure in the medium flow path, various temperature sensors can also be set according to requirements. For example, common monitoring positions include: the outlet end of the compressor 11, the outlet end of the internal condenser 12, the outlet end of the first flow path of the plate heat exchanger 41, the outlet end of the wind heat exchanger 31, the valve port eight L8 of the eight-way valve 51, and the outlet of the medium pump two 53.

[0060] The specific modes of this modular thermal management system are as follows:

[0061] Mode 1 is for dual cooling of the passenger compartment and the battery. As Figure 2 shown, the medium enters the internal condenser 12 through the compressor 11. At this time, the wind plate of the internal condenser 12 is closed, so only the medium circulates without heat release. The medium enters the wind heat exchanger 31 through the electronic expansion valve three 44 for heat release. After passing through the check valve three 48, the medium is divided into two paths. One path is for entering the evaporator 21 to absorb heat and refrigerate, and the other path is for cooling the plate heat exchanger 41. The plate heat exchanger 41 enters the eight-way valve 51 through the second flow path, and is connected by the valve port eight L8 and the valve port five L5, and the valve port six L6 and the valve port seven L7 are connected. The heat exchanger 41 exchanges the cold source to the battery branch 6 for heat absorption and refrigeration, and the motor branch 7 dissipates heat through the external heat exchange branch two 8.

[0062] Mode 2 is for dehumidifying the passenger compartment at a medium temperature. As Figure 3 shown, the medium releases heat through the internal condenser 12, and then enters the evaporator 21 through the solenoid valve one 49 to absorb heat and condense. Since it is at a medium temperature and there is no need for refrigeration and heating, when the evaporator 21 cools and dehumidifies the passenger compartment, the heat is released back into the passenger compartment through the internal condenser 12. On the other side, in the medium temperature state of the battery branch 6, there is no need for refrigeration and heat dissipation, and only local circulation of the medium is required, and there is no need for heat exchange during the process. The motor branch 7 dissipates heat through the external heat exchange branch two 8.

[0063] Mode 3 is for dehumidifying the passenger compartment 1 at a low temperature. As Figure 4 shown, the medium starts from the compressor 11 and enters the internal condenser 12 to release heat, and then is divided into two paths. One path absorbs heat from the evaporator 21 for condensation and dehumidification, and the other path absorbs heat from the plate heat exchanger 41 to supplement heat. At this time, the connection state of the eight-way valve 51 is as shown in the figure. The plate heat exchanger 41 absorbs heat from the external heat exchange branch two 8 and the motor branch 7. Since it is at a low temperature, the difference between this mode and Mode 2 is that heat needs to be supplied to the passenger compartment. Therefore, additional heat is supplemented from the external heat exchange branch two 8 through the plate heat exchanger 41.

[0064] Mode 4 is for dehumidifying the passenger compartment 2 at a low temperature, as Figure 5As shown, this mode is also used for dehumidification in the low-temperature state. It is similar to Mode 3. After the medium releases heat in the inner condenser 12, it divides into two paths. One path absorbs heat from the evaporator 21 for dehumidification, and the other path absorbs the heat of the air from the wind heat exchanger 31 to supplement heat to the passenger compartment. The motor branch 7 and the battery branch 6 are the same as in Mode 2.

[0065] Mode 5 is to absorb heat from the motor branch 7 and the outer heat exchange branch 2 8 in the low-temperature state. As Figure 6 shown, the medium enters the inner condenser 12 to release heat, and then enters the plate heat exchanger 41 to absorb heat. The plate heat exchanger 41 absorbs heat from the motor branch 7 and the outer heat exchange branch 2 8 through the eight-way valve 51. The connection and conduction relationship of the eight-way valve 51 is as Figure 6 shown.

[0066] Mode 6 is to absorb heat from the motor branch 7 in the low-temperature state. As Figure 7 shown, the medium enters the inner condenser 12 to release heat, and then enters the plate heat exchanger 41 to absorb heat. The plate heat exchanger 41 absorbs heat from the motor branch 7 through the eight-way valve 51. The connection and conduction relationship of the eight-way valve 51 is as Figure 7 shown.

[0067] Mode 7 is to absorb heat from the motor branch 7 and the battery branch 6 in the low-temperature state. As Figure 8 shown, the medium enters the inner condenser 12 to release heat, and then enters the plate heat exchanger 41 to absorb heat. The plate heat exchanger 41 absorbs heat from the motor branch 7 and the battery branch 6 through the eight-way valve 51. The connection and conduction relationship of the eight-way valve 51 is as Figure 8 shown.

[0068] Mode 8 is to absorb heat from the battery branch 6 in the low-temperature state. As Figure 9 shown, the medium enters the inner condenser 12 to release heat, and then enters the plate heat exchanger 41 to absorb heat. The plate heat exchanger 41 absorbs heat from the battery branch 6 through the eight-way valve 51. The motor branch 7 conducts normal heat dissipation from the outer heat exchange branch 2 8. The connection and conduction relationship of the eight-way valve 51 is as Figure 9 shown.

[0069] Mode 9 is to absorb heat from the outer heat exchange branch 2 8 in the low-temperature state. As Figure 10 shown, the medium enters the inner condenser 12 to release heat, and then enters the plate heat exchanger 41 to absorb heat. The plate heat exchanger 41 absorbs heat from the outer heat exchange branch 2 8 through the eight-way valve 51. The heat generated by the motor branch 7 is used to heat the battery branch 6.

[0070] Mode 10 is to absorb heat from the wind heat exchanger 31 in the low-temperature state. As Figure 11 shown, the medium enters the inner condenser 12 to release heat, and then enters the wind heat exchanger 31 to absorb heat. The heat generated by the motor branch 7 is used to heat the battery branch 6.

[0071] Mode eleven is the heat absorption from the wind heat exchanger 31 and the temperature equalization cycle of the motor branch 7 in the low-temperature state. As Figure 12 shown, the medium enters the internal condenser 12 to release heat, and then enters the wind heat exchanger 31 to absorb heat. The small amount of heat generated by the motor branch 7 is not suitable for dissipating heat through the external heat exchange branch two 8, nor does it need to heat the battery branch 6. Instead, it circulates slowly through the inside and outside of the eight-way valve 51 and the second flow path of the plate heat exchanger 41 for heat dissipation.

[0072] Mode twelve is the heat absorption from the wind heat exchanger 31 and the motor branch 7 in the low-temperature state. As Figure 13 shown, the medium enters the internal condenser 12 to release heat, and then is divided into two paths. One path enters the wind heat exchanger 31 to absorb heat, and the other path enters the plate heat exchanger 41 to absorb heat. The plate heat exchanger 41 absorbs heat from the motor branch 7 through the eight-way valve 51.

[0073] Mode thirteen is the hot gas bypass heating of the compressor 11 and the heat supply from the motor branch 7 to the battery branch 6 in the extremely low-temperature state. As Figure 14 shown, the medium is divided into two paths from the outlet of the compressor 11. One path flows through the electronic expansion valve four 45 into the gas-liquid separator 42, and the other path enters the internal condenser 12 and flows through the plate heat exchanger 41. In this mode, due to the extremely low external temperature, heat is directly generated by the work of the compressor 11 without absorbing heat from the external environment.

[0074] Mode fourteen is the water filling mode. As Figure 15 shown, the second flow path of the plate heat exchanger 41, the battery branch 6, the motor branch 7, and the external heat exchange branch 8 are all interconnected for filling the medium through the filling port 55.

[0075] On the other hand, in order to apply the integrated modular thermal management system for pure electric vehicles described in any one of the above, the present invention also proposes an integrated modular thermal management device. As Figures 16 - 25 shown, it includes a substrate 10 and an integrated valve one 4 and an integrated valve two 5 provided on the substrate 10. Among them, the plate heat exchanger 41 and the cold air storage 42 are provided below the substrate 10. The second flow path of the plate heat exchanger 41 directly docks the valve port eight L8 of the eight-way valve 51 and the outlet of the medium pump one 52 from the inside of the substrate 10. The valve port seven L7 of the eight-way valve 51 is also directly connected to the medium pump one 52 from the inside of the substrate 10. The valve port three L3 is directly connected to the medium pump two 53. The outside of the eight-way valve 51 has valve ports one L1, two L2, four L4, five L5, and six L6 connected to external branches. The medium pump two 53 is provided with an interface eight 54 connected to the motor branch 7. In addition, a filling port 55 for filling the medium is also provided on the eight-way valve 51.

[0076] The plate heat exchanger 41 is generally a plate heat exchanger. As Figure 23As shown, its first flow channel is also directly connected to the pipeline of the integrated valve 4. A number of channel grooves are provided on the substrate 10. Among them, the channel grooves include a number of vertical grooves for installing electronic expansion valves and solenoid valves. The vertical grooves are divided into upper and lower sections according to before and after the valve. Communication grooves are also provided between the upper sections of each vertical groove and between the upper and lower sections for intercommunication. The check valve is arranged in the vertical groove or the connecting groove. The channel grooves also include a number of interfaces communicating with the outside. The interfaces include interface 13 and interface 14 for communicating with both ends of the internal heat release branch 1, interface 15 for connecting the outlet of the compressor 11 and the electronic expansion valve 45, interface 23 and interface 24 for connecting the internal heat absorption branch 2, interface 32 and interface 33 for connecting the external heat exchange branch 1.

[0077] Specifically, the structure of the communication groove is as Figures 20 - 25 shown. For example, in Figure 21 , for the vertical groove corresponding to the electronic expansion valve 45, its upper section communicates with interface 15 on the right side, and its lower section communicates with the inlet of the gas-liquid separator 42, and also communicates with the check valve 47, and is connected to the check valve 46 and the outlet of the first flow channel through a longitudinal connecting groove (circular in cross-section in Figures 21 - 22 ); In addition, for another example, Figure 22 , the upper section of the solenoid valve 49 communicates with the upper section of the electronic expansion valve 44, and the lower section of the solenoid valve 49 communicates with the outlet of the check valve 48 and interface 24. In Figure 24 , the inlet of the check valve 48 communicates with the upper section of the solenoid valve 410 and interface 33. The connection relationships between other interfaces and valves will not be elaborated here.

[0078] The above embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. An integrated modular thermal management system for a pure electric vehicle, characterized in that: including an integrated valve one (4), an internal heat release branch (1), an internal heat absorption branch (2), and an external heat exchange branch one (3) connected to the integrated valve one (4); an integrated valve two (5), which includes an eight-way valve (51), a battery branch (6), a motor branch (7), and an external heat exchange branch two (8) connected to the eight-way valve (51); wherein, the integrated valve one (4) includes a plate heat exchanger (41), several solenoid valves for controlling the on / off of the flow channels, an electronic expansion valve, and a check valve. The plate heat exchanger (41) includes a first flow channel and a second flow channel. The first flow channel is used to communicate with one or more of the internal heat release branch (1), the internal heat absorption branch (2), and the external heat exchange branch one (3), and the second flow channel is used to communicate with the eight-way valve (51) and then communicate with one or more of the battery branch (6), the motor branch (7), and the external heat exchange branch two (8) to match the heat absorption / heat release requirements between the branches.

2. The integrated modular thermal management system for a pure electric vehicle according to claim 1, characterized in that: The internal heat release branch (1) includes a compressor (11) and an internal condenser (12) arranged in the passenger compartment; the internal heat absorption branch (2) includes an evaporator (21) arranged in the passenger compartment and an electronic expansion valve one (22) arranged at the inlet end of the evaporator (21); the external heat exchange branch one (3) includes a wind heat exchanger (31).

3. The integrated modular thermal management system for a pure electric vehicle according to claim 2, characterized in that: The integrated valve one (4) further includes a gas-liquid separator (42), a solenoid valve one (49), a solenoid valve two (410), an electronic expansion valve two (43), an electronic expansion valve three (44), an electronic expansion valve four (45), a check valve one (46), a check valve two (47), and a check valve three (48).

4. The integrated modular thermal management system for a pure electric vehicle according to claim 3, wherein: After the outlet end of the internal condenser (12) is connected to the integrated valve one (4), it is divided into two paths and respectively connected to the inlet end of the solenoid valve one (49) and the inlet end of the electronic expansion valve three (44). The outlet end of the electronic expansion valve three (44) is connected to the inlet end of the wind heat exchanger (31). The outlet end of the solenoid valve one (49) is divided into two paths and respectively connected to the electronic expansion valve one (22) and the electronic expansion valve two (43). Among them, the electronic expansion valve two (43) is arranged at the inlet end of the first flow channel of the plate heat exchanger (41). After the outlet end of the evaporator (21) is connected to the integrated valve one (4), it passes through the check valve one (46) and then converges with the outlet end of the first flow channel and enters the inlet end of the gas-liquid separator (42). The outlet end of the gas-liquid separator (42) is connected to the inlet end of the compressor (11). After the outlet end of the wind heat exchanger (31) is connected to the integrated valve one (4), it is connected to the outlet end of the solenoid valve one (49) through the check valve three (48). A branch is also directly arranged at the outlet end of the compressor (11) and connected to the inlet end of the electronic expansion valve four (45). The outlet end of the electronic expansion valve four (45) is connected to the inlet end of the gas-liquid separator (42), and a branch is continued to be connected to the check valve two (47) and the solenoid valve two (410). The outlet of the solenoid valve two (410) is connected to the inlet of the check valve three (48).

5. The integrated modular thermal management system for a pure electric vehicle according to claim 1, characterized in that: The eight-way valve (51) includes valve ports one (L1) to eight (L8). Among them, the second flow channel of the plate heat exchanger (41) is connected to valve ports seven (L7) and eight (L8). Among them, a first medium pump (52) is further provided at the outlet end of the valve port seven (L7); the battery branch (6) is connected to valve ports five (L5) and six (L6); the motor branch (7) is connected to valve ports three (L3) and four (L4), and a second medium pump (53) is further provided at the outlet end of the valve port three (L3); the second external heat exchange branch (8) is connected to valve ports one (L1) and two (L2).

6. The integrated modular thermal management system for a pure electric vehicle according to claim 5, wherein: The motor branch (7) includes a parallel front motor shunt (71) and a rear motor shunt (72), and a control unit cooling path (73) is also connected in series on the rear motor shunt (72).

7. The integrated modular thermal management system for a pure electric vehicle according to claim 5, characterized in that: The second external heat exchange branch (8) is a water tank heat exchanger. The management system further includes an expansion water kettle (9), and the expansion water kettle (9) is respectively connected to the second external heat exchange branch (8), valve port three (L3), and valve port seven (L7).

8. A thermal management device for the integrated modular thermal management system of a pure electric vehicle according to any one of claims 1-7, characterized in that: It includes a substrate (10) and an integrated valve one (4) and an integrated valve two (5) provided on the substrate (10). Among them, the plate heat exchanger (41) is arranged below the substrate (10), and the second flow channel of the plate heat exchanger (41) is directly docked with the eight-way valve (51). A number of channel grooves are provided on the substrate (10). Among them, the channel grooves include a number of vertical grooves for installing electronic expansion valves and solenoid valves. The vertical grooves are divided into upper and lower sections according to before and after the valve. Communication grooves are also provided between the upper sections of each vertical groove and between the upper and lower sections for intercommunication. One-way valves are arranged in the vertical grooves or connecting grooves. The channel grooves also include a number of interfaces communicating with the outside.

9. A modular thermal management device for pure electric vehicles according to claim 8, characterized in that: The interfaces include an interface one (13) and an interface two (14) for connecting the two ends of the internal heat release branch (1), an interface four (23) and an interface five (24) for connecting the internal heat absorption branch (2), and an interface six (32) and an interface seven (33) for connecting the first external heat exchange branch (3).

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