Motor waste heat utilization management system and method, medium and vehicle
By using fluid control components and a temperature monitoring system to achieve series-parallel switching between the motor circuit and the battery circuit, the problems of complex circuit structure and high cost in the existing technology are solved, and the circuit structure is simplified and the cost is reduced.
Patent Information
- Application Number
- CN202511298413.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-11
- Publication Date
- 2025-11-07
AI Technical Summary
Existing motor waste heat recovery management systems suffer from complex loop structures and high construction costs, especially the four-way valve design, which increases the overall system cost.
Fluid control components are used to achieve series and parallel switching control of motor circuit and battery circuit, avoiding the use of four-way valves. The controller monitors temperature information and controls the opening or closing of the fluid control component port, and combines electronic shut-off valves and check valves for circuit isolation.
It simplifies the loop structure, reduces system construction costs, and improves control reliability and the accuracy of waste heat utilization management.
Smart Images
Figure CN120902497A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of battery thermal management, in particular to a motor waste heat utilization management system and method, medium and vehicle. BACKGROUND
[0002] In an electric vehicle, in order to make different components reach their optimal working temperature range, a thermal management system needs to be applied for cooling or heating. For example, a radiator needs to be used to cool the electric drive system when the vehicle is running, and the battery pack needs to be heated in a low temperature environment. Therefore, the electric drive cooling circuit and the battery cooling circuit can be usually connected in series to realize motor waste heat utilization, and when the motor waste heat is not needed, the electric drive cooling circuit and the battery cooling circuit need to be completely isolated.
[0003] At present, the existing scheme realizes the series and parallel control of the electric drive cooling circuit and the battery cooling circuit by designing a complex circuit and using multiple shut-off valves, but has the disadvantages of complex system structure and control logic and low reliability. Although the waste heat utilization circuit designed by using a four-way valve can simplify the circuit structure, the cost of the four-way valve is relatively high, which increases the overall construction cost of the system.
[0004] In summary, there is an urgent need for a motor waste heat utilization management scheme that can simplify the circuit structure while reducing the system construction cost. SUMMARY
[0005] The purpose of the embodiments of the present application is to provide a motor waste heat utilization management system, method, medium and vehicle to simplify the circuit structure while reducing the system construction cost.
[0006] In a first aspect, the embodiments of the present application provide a motor waste heat utilization management system, comprising an electric drive thermal management circuit, a battery thermal management circuit, a fluid control assembly and a controller. The electric drive thermal management circuit comprises a motor system and a motor heat dissipation device. The battery thermal management circuit comprises a battery pack. The first end of the motor heat dissipation device is connected to the first port of the fluid control assembly, the second port of the fluid control assembly is connected to the first end of the motor system, and the pipe node between the second end of the motor system and the second end of the motor heat dissipation device is connected to the first end of the battery thermal management circuit, and the second end of the battery thermal management circuit is connected to the third port of the fluid control assembly. The controller is configured to: monitor the temperature information of the motor system and the battery pack in real time; In a case where it is determined that the temperature information meets the preset waste heat utilization condition, the second port and the third port of the fluid control assembly are controlled to be conducted, and the first port of the fluid control assembly is controlled to be cut off.
[0007] In the embodiments of the present application, the series and parallel switching control of the motor loop and the battery loop is realized by using one fluid control assembly, without using a four-way valve assembly, so that the circuit structure can be simplified and the system construction cost can be reduced.
[0008] In some embodiments, the controller is further configured to: In a case where it is determined that the temperature information does not meet the preset waste heat utilization condition, the first port and the second port of the fluid control assembly are controlled to be conducted, and the third port of the fluid control assembly is controlled to be cut off.
[0009] In the embodiments of the present application, when the temperature information does not meet the preset waste heat utilization condition, the battery loop and the motor loop are switched to the isolation mode, so that the circuit isolation can be realized when the waste heat utilization is not needed.
[0010] In some embodiments, the motor waste heat utilization management system further comprises a motor water pump and a battery water pump; the motor water pump is arranged on the electric drive heat management loop, and the battery water pump is arranged on the battery heat management loop. The controller is further configured to: In a case where it is determined that the temperature information meets the preset waste heat utilization condition, the battery water pump is controlled to stop running.
[0011] In the embodiments of the present application, the battery water pump is controlled to stop running during the motor waste heat utilization process, so as to avoid the liquid flow conflict between the battery loop and the waste heat utilization loop.
[0012] In some embodiments, the motor waste heat utilization management system further comprises a first fluid control component. The first fluid control component is configured to limit the fluid flow between the electric drive heat management loop and the battery heat management loop during the cut-off of the third port of the fluid control assembly.
[0013] In the embodiments of the present application, the first fluid control component is arranged, so as to prevent the direct contact between the fluid in the motor loop and the fluid in the battery loop and cause heat loss when the motor waste heat utilization is not needed.
[0014] In some embodiments, the first fluid control component is an electronic cut-off valve. The controller is further configured to: In a case where it is determined that the temperature information does not meet the preset waste heat utilization condition, the electronic cut-off valve is controlled to be cut off.
[0015] In the embodiments of the present application, when waste heat utilization is not needed, the cutoff between the battery circuit and the motor circuit is achieved by controlling the electronic cutoff valve to be cut off, thereby improving the reliability of the circuit control.
[0016] In some embodiments, the first fluid control is a one-way valve.
[0017] In the embodiments of the present application, by setting the first fluid control as a one-way valve, the circuit control logic is further simplified.
[0018] In some embodiments, the motor waste heat utilization management system further comprises a battery cooling device. The first end of the battery cooling device and the first end of the battery pack are respectively connected to the second end of the battery thermal management circuit, and the second end of the battery cooling device and the second end of the battery pack are respectively connected to the first end of the battery thermal management circuit.
[0019] In the embodiments of the present application, the battery circuit further comprises a battery cooling device for cooling the battery pack, further covering more battery pack cooling scenarios.
[0020] In some embodiments, the battery thermal management circuit further comprises a second fluid control. The second fluid control is used to limit the flow of heat exchange fluid through the battery cooling device during fluid heat exchange between the battery thermal management circuit and the electric drive thermal management circuit.
[0021] In the embodiments of the present application, by setting the second fluid control in the battery circuit, during heat exchange between the battery circuit and the electric drive circuit, heat loss caused by heat exchange fluid passing through the battery cooling device is avoided.
[0022] In some embodiments, the controller is specifically configured to: In a case where it is determined based on the temperature information that the temperature of the battery pack is lower than a preset first temperature threshold and the temperature of the motor system is higher than a preset second temperature threshold, it is determined that the temperature information satisfies a preset waste heat utilization condition.
[0023] In the embodiments of the present application, by respectively determining the temperature threshold values of the battery pack and the motor system to determine whether the waste heat utilization condition is satisfied, the accuracy and reliability of the waste heat utilization management are further improved.
[0024] In a second aspect, the embodiments of the present application provide a motor waste heat utilization management method applied to the controller of any one of the motor waste heat utilization management systems, comprising: Real-time monitoring of temperature information of the motor system and the battery pack; In a case where it is determined that the temperature information meets a preset waste heat utilization condition, the second port and the third port of the fluid control assembly are controlled to be conducted, and the first port of the fluid control assembly is controlled to be cut off.
[0025] In a third aspect, an electronic device is provided, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method of any of the embodiments of the first aspect when executing the program.
[0026] In a fourth aspect, a computer readable storage medium is provided, which stores a computer program, and the computer program, when executed by a processor, implements the method of any of the embodiments of the first aspect.
[0027] In a fifth aspect, a computer program product is provided, which includes a computer program, and the computer program, when executed by a processor, implements the method of any of the embodiments of the first aspect.
[0028] In a sixth aspect, a vehicle is provided, which includes the motor waste heat utilization management system. BRIEF DESCRIPTION OF DRAWINGS
[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.
[0030] Figure 1 A structural schematic diagram of a motor waste heat utilization management system provided by the embodiments of the present application is shown in FIG. 1; Figure 2 A structural schematic diagram of a motor waste heat utilization management system provided by the embodiments of the present application is shown in FIG. 2; Figure 3 A structural schematic diagram of a motor waste heat utilization management system provided by the embodiments of the present application is shown in FIG. 3; Figure 4 A structural schematic diagram of a motor waste heat utilization management system provided by the embodiments of the present application is shown in FIG. 4; Figure 5 A flow schematic diagram of a motor waste heat utilization management method provided by the embodiments of the present application is shown in FIG. 5; Figure 6 A structural schematic diagram of a motor waste heat utilization management device provided by the embodiments of the present application is shown in FIG. 6; Figure 7 A structural schematic diagram of an electronic device is provided in the embodiments of the present application. DETAILED DESCRIPTION
[0031] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
[0032] It should be noted that similar reference numerals and letters refer to similar items in the following drawings, and therefore, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings. Meanwhile, in the description of the present application, the terms “first”, “second”, and the like are only used for distinguishing description, and cannot be understood as indicating or implying relative importance.
[0033] As shown in Figure 1 The embodiments of the present application provide a motor waste heat utilization management system, which comprises an electric drive heat management circuit, a battery heat management circuit, a fluid control assembly 1, and a controller. The electric drive heat management circuit comprises a motor system 2 and a motor heat dissipation device 3. The battery heat management circuit comprises a battery pack 4. A first end of the motor heat dissipation device 3 is connected to a first port of the fluid control assembly 1, a second port of the fluid control assembly 1 is connected to a first end of the motor system 2, a second end of the motor system 2 is connected to a second end of the motor heat dissipation device 3, and a pipeline node between the second end of the motor system 2 and the second end of the motor heat dissipation device 3 is connected to a first end of the battery heat management circuit, and a second end of the battery heat management circuit is connected to a third port of the fluid control assembly 1. The controller is configured to: monitor temperature information of the motor system 2 and the battery pack 4 in real time; when it is determined that the temperature information meets a preset waste heat utilization condition, control the second port and the third port of the fluid control assembly 1 to be conductive, and control the first port of the fluid control assembly 1 to be cut off.
[0034] It should be noted that the electric drive heat management circuit is used for heat management of the motor system 2 (electric drive system), and in the embodiments of the present application, the motor heat dissipation device 3 (for example, a low-temperature heat sink) can be used for heat dissipation treatment of the motor system 2.
[0035] In some embodiments, the motor system 2 can comprise a motor and an OBC+DCDC, wherein OBC (On-board Charger) is a vehicle-mounted charger, and DCDC (DC-to-DC) is a direct-current-direct-current converter.
[0036] Please refer to Figure 4The battery thermal management circuit is used to perform thermal management on the battery pack 4, and may include: cooling the battery pack 4 with a battery cooling device 8, or heating the battery with a heating device 13 (e.g., a PTC heater). In this embodiment, the battery pack 4 may be a water-cooled battery pack, and accordingly, the battery thermal management circuit uses liquid heat exchange to heat or cool the water-cooled battery pack.
[0037] It should be noted that the electric drive thermal management circuit and the battery thermal management circuit can both operate independently. When the battery pack 4 fails to reach its optimal operating temperature range due to its low temperature, the motor system 2 generates a certain amount of heat energy during vehicle operation. Therefore, the heat energy of the motor system 2 can be used to heat the battery pack 4, thus eliminating the need for PTC heating and saving energy.
[0038] Specifically, the controller can monitor the temperature information of the battery pack 4 and the motor system 2 in real time through sensors. When it is determined that the motor system 2 has redundant heat and the battery pack 4 needs to be heated, the controller can connect the originally independently operating electric drive thermal management circuit and the battery thermal management circuit in series by controlling the fluid control component 1, so as to use the waste heat of the motor system 2 to heat the battery pack 4.
[0039] like Figure 1 As shown, exemplarily, when the temperature information meets the preset waste heat utilization conditions (e.g., it is determined that the motor system 2 has redundant heat and the battery pack 4 needs to be heated), the second port (right side) and the third port (lower side) of the fluid control component 1 can be turned on, and the first port (left side) of the fluid control component 1 can be turned off. In this way, the coolant (e.g., antifreeze can be used) in the electric drive thermal management circuit can flow through the motor system 2 and enter the battery thermal management circuit, and then flow out of the battery thermal management circuit and back to the electric drive thermal management circuit, forming a fluid thermal cycle.
[0040] For example, the coolant flows as follows: motor system 2 → battery pack 4 → fluid control assembly 1 → motor system 2.
[0041] like Figure 4 As shown, in some embodiments, the electric drive thermal management circuit may also include a coolant reservoir 14. Exemplarily, the coolant reservoir 14 may be disposed between the first pipeline node 10 (the pipeline node between the first end of the battery thermal management circuit and the electric drive thermal management circuit) and the motor cooling device 3.
[0042] It should be noted that when the electric drive thermal management circuit operates alone, the cooling liquid in the circuit can be drawn from the cooling liquid reservoir 14, flows through the equipment that needs to be cooled and then returns to the cooling liquid reservoir 14, and the cooling liquid reservoir 14 can keep the temperature of the cooling liquid in the circuit within a suitable range. In addition, the cooling liquid reservoir 14 also has a buffering effect. When the cooling liquid in the circuit is reduced due to evaporation or leakage, the cooling liquid reservoir 14 can supplement the cooling liquid to the system in time to ensure the stable operation of the cooling circuit; at the same time, the cooling liquid reservoir 14 can also absorb the pressure fluctuation in the circuit to reduce the vibration and noise of the equipment.
[0043] It can be understood that when the second port and the third port of the fluid control assembly 1 are in conduction and the first port is cut off, the cooling liquid passing through the motor system 2 will flow into the battery thermal management circuit through the first pipeline node 10, and will not pass through the cooling liquid reservoir 14 and the motor heat dissipation device 3, thereby avoiding heat loss.
[0044] Based on this, the series and parallel switching control of the motor circuit and the battery circuit is realized by using one fluid control assembly 1, without using a four-way valve assembly, so that the circuit structure can be simplified and the system construction cost can be reduced.
[0045] Exemplarily, the fluid control assembly 1 can be a three-way valve. By controlling the conduction or cutoff of each port in the three-way valve, the flow direction of the cooling liquid in the electric drive thermal management circuit and the battery thermal management circuit can be controlled, and the communication or isolation between the electric drive thermal management circuit and the battery thermal management circuit can be realized.
[0046] Exemplarily, the fluid control assembly 1 can be a variable cross-section three-way valve. In this way, by controlling the opening degree of the three ports in the variable cross-section three-way valve respectively, the coupling degree between the electric drive thermal management circuit and the battery thermal management circuit can be adjusted.
[0047] Exemplarily, the fluid control assembly 1 can also be an assembly composed of three electric control valves. In this way, the on-off of the three ports in the fluid control assembly 1 can be realized by one electric control valve respectively, so that the communication or isolation between the electric drive thermal management circuit and the battery thermal management circuit can be realized.
[0048] Exemplarily, since the second port of the fluid control assembly 1 is in the conduction state regardless of whether the temperature information meets the preset waste heat utilization condition, the fluid control assembly 1 can also be an assembly composed of two electric control valves. The two electric control valves are respectively used to realize the on-off of the first port and the third port in the fluid control assembly 1, so that the communication or isolation between the electric drive thermal management circuit and the battery thermal management circuit can be realized.
[0049] In some embodiments, the controller is further configured to: In a case where it is determined that the temperature information does not satisfy the preset waste heat utilization condition, the first port and the second port of the fluid control assembly 1 are controlled to be open, and the third port of the fluid control assembly 1 is controlled to be cut off.
[0050] It should be noted that, when it is judged that the temperature information does not satisfy the preset waste heat utilization condition (for example, the battery does not need to be heated, or the motor system 2 has no waste heat to be utilized), the first port and the second port of the fluid control assembly 1 are controlled to be open, and the third port of the fluid control assembly 1 is controlled to be cut off, so that the electric drive thermal management loop and the battery thermal management loop are in an isolated state, that is, in a parallel mode. In this mode, the battery thermal management loop can be temperature-managed through the heating device or the battery cooling device 8 thereof, and the electric drive thermal management loop can be motor-cooled through the motor heat dissipation device 3 thereof.
[0051] Therefore, by switching the battery loop and the motor loop to the isolated mode when the temperature information does not satisfy the preset waste heat utilization condition, the loop isolation in the case where waste heat utilization is not needed can be realized.
[0052] In some embodiments, the motor waste heat utilization management system further comprises a motor water pump 5 and a battery water pump 6; the motor water pump 5 is arranged on the electric drive thermal management loop, and the battery water pump 6 is arranged on the battery thermal management loop. The controller is further configured to: In a case where it is determined that the temperature information satisfies the preset waste heat utilization condition, the battery water pump 6 is controlled to stop running.
[0053] As shown in Figure 2 It should be noted that the electric drive thermal management loop can further comprise the motor water pump 5, which can be used to control the flow direction and flow rate of the cooling liquid in the electric drive thermal management loop. For example, the running power of the corresponding motor water pump 5 can be matched according to the current motor system 2 cooling demand (such as the temperature difference between the current temperature and the target temperature of the motor system 2), so as to assist in controlling the rate of cooling the motor system 2.
[0054] For example, the motor water pump 5 can also be multiple, at least one motor water pump 5 being arranged on each side of the motor system 2 of the electric drive thermal management loop, so as to better control the flow rate of the cooling liquid in the electric drive thermal management loop.
[0055] It should be noted that the battery thermal management loop can further comprise the battery water pump 6, and the battery water pump 6 can be used to control the flow direction and flow rate of the cooling liquid in the battery thermal management loop. For example, the running power of the corresponding battery water pump 6 can be matched according to the current battery pack 4 cooling demand (or heating demand, such as the temperature difference between the current temperature and the target temperature of the battery pack 4), so as to assist in controlling the rate of cooling (or heating) the battery pack 4.
[0056] It should be noted that the motor waste heat utilization management system can be provided with the motor water pump 5 and the battery water pump 6 at the same time, so that when the electric drive thermal management circuit and the battery thermal management circuit are in an isolated state (two circuits are relatively independently operated), the motor water pump 5 (or the battery water pump 6) can be selected to be turned on or turned off according to the cooling or heating requirements in each circuit.
[0057] In some embodiments, the battery water pump 6 can be arranged between the battery cooling device 8 and the second pipe node 11 (the position where the battery thermal management circuit is connected to the first pipe node 10). In this way, when the electric drive thermal management circuit and the battery thermal management circuit are in a waste heat utilization state (two circuits are operated in series), in order to avoid the conflict of the flow direction of the cooling liquid in the battery thermal management circuit and the waste heat utilization circuit (the circuit after the battery thermal management circuit and the electric drive thermal management circuit are coupled in series), the battery water pump 6 needs to be controlled to stop running at this time.
[0058] Based on this, by controlling the battery water pump 6 to stop running during the motor waste heat utilization process, the liquid flow conflict between the battery circuit and the waste heat utilization circuit is avoided.
[0059] In some embodiments, the motor waste heat utilization management system further comprises a first fluid control member 7; The first fluid control member 7 is used to limit the fluid flow between the electric drive thermal management circuit and the battery thermal management circuit during the third port truncation of the fluid control assembly 1.
[0060] It can be understood that by controlling the third port truncation of the fluid control assembly 1, the cooling liquid of the battery thermal management circuit can be prevented from entering the electric drive thermal management circuit through the fluid control assembly 1.
[0061] As Figure 3 shown, further, in order to better isolate the electric drive thermal management circuit and the battery thermal management circuit during the third port truncation of the fluid control assembly 1, a first fluid control member 7 can be further provided, which is used to limit the fluid flow between the electric drive thermal management circuit and the battery thermal management circuit during the third port truncation of the fluid control assembly 1.
[0062] Exemplarily, the first fluid control member 7 is arranged between the first pipe node 10 and the second pipe node 11, so that during the third port truncation of the fluid control assembly 1, the flow of the cooling liquid between the first pipe node 10 and the second pipe node 11 can be limited by the first fluid control member 7.
[0063] Based on this, by providing the first fluid control member 7, when the motor waste heat utilization is not needed, the direct contact between the fluid in the motor circuit and the fluid in the battery circuit is prevented, so that the heat loss is avoided.
[0064] In some embodiments, the first fluid control member 7 is an electronic stop valve. The controller is further configured to: In a case where the temperature information does not satisfy the preset waste heat utilization condition, the electronic stop valve is controlled to be cut off.
[0065] Exemplarily, the first fluid control member 7 can be an electronic stop valve, and the controller can control the opening and closing of the electronic stop valve according to the requirement. Specifically, in a case where the temperature information does not satisfy the preset waste heat utilization condition, in addition to controlling the third port of the fluid control assembly 1 to be cut off, the electronic stop valve can also be controlled to be cut off, so that the battery thermal management loop and the motor thermal management loop can be completely isolated through the fluid control assembly 1 and the electronic stop valve.
[0066] Based on this, when waste heat utilization is not needed, the isolation between the battery loop and the motor loop is realized by controlling the electronic stop valve to be cut off, thereby improving the reliability of the loop control.
[0067] In some embodiments, the first fluid control member 7 is a one-way valve.
[0068] It should be noted that the first fluid control member 7 can also be a one-way valve. The one-way valve is an automatic valve that allows fluid to flow in one direction and prevents reverse flow. Its core principle is to use the pressure difference of the fluid to drive the valve core to open or close, thereby realizing the function of one-way conduction.
[0069] It can be understood that when the temperature information satisfies the preset waste heat utilization condition, the controller controls the electric drive thermal management loop and the battery thermal management loop to be coupled in series, and at this time, the flow direction of the cooling liquid in the series loop is: the motor system 2→ the one-way valve (the first fluid control member 7)→ the battery pack 4→ the fluid control assembly 1→ the motor system 2.
[0070] When the temperature information does not satisfy the preset waste heat utilization condition, the controller controls the electric drive thermal management loop and the battery thermal management loop to be decoupled in parallel, and at this time, due to the one-way flow restriction characteristic of the one-way valve, the cooling liquid of the battery thermal management loop will not flow into the electric drive thermal management loop through the one-way valve; and due to the third port of the fluid control assembly 1 being in a cut-off state, the pressure difference on the conduction side of the one-way valve is negative, causing the one-way valve to be blocked and cut off, and the cooling liquid of the electric drive thermal management loop will also not flow into the battery thermal management loop through the one-way valve.
[0071] Based on this, by setting the first fluid control member 7 as a one-way valve, the isolation between the battery thermal management loop and the electric drive thermal management loop can be realized by virtue of the structural characteristics of the one-way valve, and the one-way valve does not need to be electronically controlled, thereby further simplifying the loop control logic.
[0072] In some embodiments, the motor waste heat utilization management system further comprises a battery cooling device 8; The first end of the battery cooling device 8 and the first end of the battery pack 4 are connected with the second end of the battery thermal management circuit respectively, and the second end of the battery cooling device 8 and the second end of the battery pack 4 are connected with the first end of the battery thermal management circuit respectively.
[0073] Please refer to Figure 4 It should be noted that the motor waste heat utilization management system can further include the battery cooling device 8 connected in the battery thermal management circuit for cooling the battery pack 4 according to requirements.
[0074] Exemplarily, in the embodiment of the present application, the battery cooling device 8 can be arranged between the second pipe node 11 and the third pipe node 12 (and located at the other side of the battery thermal management circuit opposite to the battery pack 4), wherein the second pipe node 11 is the position where the battery thermal management circuit is connected with the first pipe node 10 (the first end of the battery thermal management circuit), and the third pipe node 12 is the position where the battery thermal management circuit is connected with the third port of the fluid control assembly 1 (the second end of the battery thermal management circuit).
[0075] Exemplarily, the battery cooling device 8 can be coupled with other thermal management circuits of the vehicle, such as the air conditioning system, that is, the battery cooling device 8 can serve as a cooling device shared by the battery thermal management circuit and the air conditioning system.
[0076] Based on this, by arranging the battery cooling device 8 in the battery circuit for cooling the battery pack 4, more battery pack 4 cooling scenarios are further covered.
[0077] In some embodiments, the battery thermal management circuit further includes a second fluid control member 9. The second fluid control member 9 is configured to limit the flow of the heat exchange fluid through the battery cooling device 8 during the fluid heat exchange between the battery thermal management circuit and the electric drive thermal management circuit.
[0078] Please continue to refer to Figure 4 It can be understood that when the battery thermal management circuit and the electric drive thermal management circuit are coupled in series, the cooling liquid flows through the motor system 2 and flows into the battery thermal management circuit from the first end of the battery thermal management circuit, and then the cooling liquid is divided into two paths and flows through the battery pack 4 and the battery cooling device 8 respectively, and then flows out of the battery thermal management circuit through the second end of the battery thermal management circuit. In this way, since the cooling liquid of the waste heat utilization circuit (the circuit after the battery thermal management circuit and the electric drive thermal management circuit are coupled in series) passes through the battery cooling device 8, a certain amount of heat loss will be caused.
[0079] In view of this, the second fluid control member 9 can be arranged in the battery thermal management circuit for limiting the flow of the heat exchange fluid (cooling liquid) through the battery cooling device 8.
[0080] Exemplarily, the second fluid control member 9 can be an electrically controlled valve, which can be arranged between the battery cooling device 8 and the second pipeline node 11. During the motor waste heat utilization, the electrically controlled valve can be controlled to be cut off, so that the flow direction of the cooling liquid in the series circuit is: the motor system 2→ the first pipeline node 10→ the second pipeline node 11→ the battery pack 4→ the third pipeline node 12→ the fluid control assembly 1→ the motor system 2. As can be seen, since the cooling liquid does not flow through the battery cooling device 8 under the limitation of the cut-off valve, the heat loss of the waste heat utilization system is further avoided.
[0081] Exemplarily, the second fluid control member 9 can be a one-way valve, which can be arranged to allow the cooling liquid to flow only in one direction from the battery cooling device 8 to the second pipeline node 11, so that during the motor waste heat utilization, the flow direction of the cooling liquid in the series circuit is: the motor system 2→ the first pipeline node 10→ the second pipeline node 11→ the battery pack 4→ the third pipeline node 12→ the fluid control assembly 1→ the motor system 2. As can be seen, since the cooling liquid does not flow through the battery cooling device 8 under the limitation of the one-way valve, the heat loss of the waste heat utilization system is further avoided.
[0082] Based on this, by arranging the second fluid control member 9 in the battery circuit, during the heat exchange between the battery circuit and the motor circuit, the heat loss caused by the heat exchange fluid passing through the battery cooling device 8 is avoided.
[0083] In some embodiments, the controller is specifically configured to: determine that the temperature information satisfies the preset waste heat utilization condition, in a case where the temperature information indicates that the temperature of the battery pack 4 is lower than a preset first temperature threshold and the temperature of the motor system 2 is higher than a preset second temperature threshold.
[0084] Exemplarily, determining whether the temperature information satisfies the preset waste heat utilization condition can be divided into two aspects: one aspect is whether the battery pack 4 needs to be heated, and the other aspect is whether the motor system 2 has waste heat that can be utilized.
[0085] Exemplarily, if it is determined based on the temperature information that the temperature of the battery pack 4 is lower than the preset first temperature threshold, it is determined that the battery pack 4 needs to be heated, otherwise it is determined that the battery pack 4 does not need to be heated.
[0086] Exemplarily, if it is determined based on the temperature information that the temperature of the motor system 2 is higher than the preset second temperature threshold, it is determined that the motor system 2 has waste heat that can be utilized, otherwise it is determined that the motor system 2 does not have waste heat that can be utilized.
[0087] It can be understood that when it is determined that the temperature information meets the preset waste heat utilization condition, the motor system 2 temperature needs to be higher than the battery pack 4 temperature at this time because the battery pack 4 needs to be heated by using the motor waste heat. Based on this, the second temperature threshold needs to be set to be greater than or equal to the first temperature threshold, so that in the case that the temperature of the battery pack 4 is lower than the preset first temperature threshold and the temperature of the motor system 2 is higher than the preset second temperature threshold based on the temperature information, the temperature of the motor system 2 at this time is necessarily higher than the temperature of the battery pack 4.
[0088] It should be noted that the order of the above two aspects of condition judgment can be set according to requirements, for example, first, judge whether the temperature of the battery pack 4 is lower than the preset first temperature threshold, and only in the case that the temperature of the battery pack 4 is lower than the preset first temperature threshold, then judge whether the temperature of the motor system 2 is higher than the preset second temperature threshold. For another example, first, judge whether the temperature of the motor system 2 is higher than the preset second temperature threshold, and only in the case that the temperature of the motor system 2 is higher than the preset second temperature threshold, then judge whether the temperature of the battery pack 4 is lower than the preset first temperature threshold.
[0089] Exemplarily, in addition to the above two aspects of condition judgment, a third aspect of condition judgment can be added: judging whether the temperature difference between the motor system 2 and the battery pack 4 is higher than a preset temperature difference threshold. It can be understood that if the temperature difference between the motor system 2 and the battery pack 4 is small, the efficiency of heating the battery pack 4 by using the waste heat of the motor system 2 is not high, so it can be set that only in the case that the temperature difference between the motor system 2 and the battery pack 4 is higher than the preset temperature difference threshold, it is considered that the preset waste heat utilization condition is met.
[0090] That is, in the case that the temperature of the battery pack 4 is lower than the preset first temperature threshold, the temperature of the motor system 2 is higher than the preset second temperature threshold, and the temperature difference between the motor system 2 and the battery pack 4 is higher than the preset temperature difference threshold based on the temperature information, it is determined that the temperature information meets the preset waste heat utilization condition.
[0091] Based on this, by respectively performing temperature threshold judgment on the battery pack 4 and the motor system 2 to determine whether the waste heat utilization condition is met, the accuracy and reliability of the waste heat utilization management are further improved.
[0092] As shown in Figure 5 The motor waste heat utilization management method provided by the embodiment of the application can be applied to a controller of any motor waste heat utilization management system, and can include the following steps: S510, real-time monitoring temperature information of the motor system and the battery pack; S520, in the case that the temperature information meets the preset waste heat utilization condition, controlling the second port and the third port of the fluid control assembly to be conducted, and controlling the first port of the fluid control assembly to be cut off.
[0093] It can be understood that the above-mentioned device embodiment is corresponding to the method embodiment of the present application. The motor waste heat utilization management device provided by the embodiment of the present application can realize the motor waste heat utilization management system provided by any one of the method embodiments of the present application.
[0094] Please refer to Figure 6 , Figure 6 The composition block diagram of the motor waste heat utilization management device provided by some embodiments of the present application is shown. It should be understood that the motor waste heat utilization management device corresponds to the above-mentioned method embodiment, and can perform each step involved in the above-mentioned method embodiment. The specific functions of the motor waste heat utilization management device can be referred to the description in the above, and the detailed description is appropriately omitted here to avoid repetition. Figure 5
[0095] Figure 6 The motor waste heat utilization management device comprises at least one software function module which can be stored in the memory in the form of software or firmware or solidified in the motor waste heat utilization management device, and the motor waste heat utilization management device comprises: The temperature monitoring module 610 is configured to monitor the temperature information of the motor system and the battery pack in real time. The loop control module 620 is configured to control the second port and the third port of the fluid control assembly to be conducted and control the first port of the fluid control assembly to be cut off when it is determined that the temperature information meets the preset waste heat utilization condition.
[0096] It can be understood that the above-mentioned device embodiment is corresponding to the method embodiment of the present application. The motor waste heat utilization management device provided by the embodiment of the present application can realize the motor waste heat utilization management method provided by any one of the method embodiments of the present application.
[0097] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-mentioned device can refer to the corresponding process in the foregoing method, and will not be described in more detail here.
[0098] As shown in Figure 7 some embodiments of the present application provide an electronic device 700, which comprises a memory 710, a processor 720, and a computer program stored in the memory 710 and executable on the processor 720. When the processor 720 reads the program from the memory 710 through the bus 730 and executes the program, the method of any embodiment of the above-mentioned motor waste heat utilization management method can be realized.
[0099] The processor 720 can process digital signals and can include various computing structures. For example, a complex instruction set computing structure, a structure reduced instruction set computer structure, or a structure implementing a combination of multiple instruction sets. In some examples, the processor 720 can be a microprocessor.
[0100] The memory 710 can be used to store instructions executed by the processor 720 or data related to the execution of the instructions. These instructions and / or data can include code for implementing some or all of the functions of one or more modules described in the embodiments of the present application. The processor 720 of the embodiments of the present disclosure can be used to execute the instructions in the memory 710 to implement the methods shown above. The memory 710 includes a dynamic random access memory, a static random access memory, a flash memory, an optical memory, or other memories well known to those skilled in the art.
[0101] Some embodiments of the present application also provide a vehicle comprising any of the motor waste heat utilization management systems.
[0102] Some embodiments of the present application also provide a computer readable storage medium, the computer readable storage medium having stored thereon a computer program, the computer program being executed by a processor to perform the method of the method embodiments.
[0103] Some embodiments of the present application also provide a computer program product, the computer program product, when executed on a computer, causing the computer to perform the method of the method embodiments.
[0104] It should be noted that each of the embodiments in the present specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts of each embodiment can be mutually referred to. For the device embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the part of the method embodiments.
[0105] It should be understood that the disclosed apparatus and method can also be implemented in other ways. The apparatus embodiments described above are merely exemplary. For example, the flowcharts and block diagrams in the accompanying drawings show the possible implementation architectures, functions and operations of the apparatus, method and computer program product according to the embodiments of the present application. In this regard, each block in the flowcharts or block diagrams can represent a module, a program segment or a part of code, which includes one or more executable instructions for implementing the specified logical functions. It should also be noted that in some alternative implementations, the functions noted in the blocks can occur in a different order than that noted in the accompanying drawings. For example, two consecutive blocks can actually be executed substantially in parallel, and sometimes in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and the combination of blocks in the block diagrams and / or flowcharts, can be implemented by a dedicated hardware-based system for implementing the specified functions or actions, or can be implemented by a combination of dedicated hardware and computer instructions.
[0106] In addition, the functional modules in the various embodiments of the present application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.
[0107] If the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application can be embodied in the form of a software product, and the computer software product is stored in a storage medium, and includes a number of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various program code storage media.
[0108] The above merely provides an example of the present application and is not intended to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.
[0109] The above merely provides an example of the present application and is not intended to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.
[0110] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one from another entity or action without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.
Claims
1. A motor waste heat utilization management system, characterized by, The application relates to an electric drive and battery heat management system. The electric drive heat management circuit comprises a motor system and a motor heat dissipation device. The battery heat management circuit comprises a battery pack. The first end of the motor heat dissipation device is connected with the first port of the fluid control assembly, the second port of the fluid control assembly is connected with the first end of the motor system, the pipeline node between the second end of the motor system and the second end of the motor heat dissipation device is connected with the first end of the battery heat management circuit, and the second end of the battery heat management circuit is connected with the third port of the fluid control assembly. The controller is used for: real-time monitoring of temperature information of the motor system and the battery pack; in the case that the temperature information meets the preset waste heat utilization condition, controlling the second port and the third port of the fluid control assembly to be open and the first port of the fluid control assembly to be cut off.
2. The motor waste heat utilization management system according to claim 1, characterized by, The controller is further used for: in the case that the temperature information does not meet the preset waste heat utilization condition, controlling the first port and the second port of the fluid control assembly to be open and the third port of the fluid control assembly to be cut off.
3. The motor waste heat utilization management system of claim 1, wherein The motor water pump is arranged on the electric drive heat management circuit, and the battery water pump is arranged on the battery heat management circuit. The controller is further used for: in the case that the temperature information meets the preset waste heat utilization condition, controlling the battery water pump to stop running.
4. The motor waste heat utilization management system of claim 1, wherein The first fluid control member is further arranged. The first fluid control member is used for limiting fluid flow between the electric drive heat management circuit and the battery heat management circuit during the cut-off of the third port of the fluid control assembly.
5. The motor waste heat utilization management system of claim 4, wherein The first fluid control member is an electronic cut-off valve. The controller is further used for: in the case that the temperature information does not meet the preset waste heat utilization condition, controlling the electronic cut-off valve to be cut off.
6. The motor waste heat utilization management system of claim 4, wherein The first fluid control member is a one-way valve.
7. The motor waste heat utilization management system of claim 1, wherein The battery cooling device is further arranged. The first end of the battery cooling device and the first end of the battery pack are respectively connected with the second end of the battery heat management circuit, and the second end of the battery cooling device and the second end of the battery pack are respectively connected with the first end of the battery heat management circuit.
8. The motor waste heat utilization management system of claim 7, wherein The battery heat management circuit further comprises a second fluid control member. The second fluid control member is used for limiting the heat exchange fluid from flowing through the battery cooling device during the heat exchange between the battery heat management circuit and the electric drive heat management circuit.
9. The motor waste heat utilization management system according to any one of claims 1 to 8, characterized by, The controller is specifically used for: in the case that the temperature information of the battery pack is lower than a preset first temperature threshold value and the temperature of the motor system is higher than a preset second temperature threshold value, determining that the temperature information meets the preset waste heat utilization condition.
10. A motor waste heat utilization management method applied to a controller of the motor waste heat utilization management system according to any one of claims 1 to 9, characterized in that, The application relates to an electric drive and battery heat management system. The controller is used for: real-time monitoring of temperature information of the motor system and the battery pack; in the case that the temperature information meets the preset waste heat utilization condition, controlling the second port and the third port of the fluid control assembly to be open and the first port of the fluid control assembly to be cut off.
11. A computer readable storage medium, characterized in that, The computer readable storage medium stores a computer program, and the computer program is run by the processor to execute the motor waste heat utilization management method.
12. A vehicle characterized by comprising: The motor waste heat utilization management system comprises the motor waste heat utilization management system according to any one of claims 1-9.