Distributed double-electric-drive thermal management system
The distributed dual-electric drive thermal management system enables the switching between redundant heat dissipation on both sides of the motor and independent heat dissipation on one side. This solves the problem of motor damage in the existing system when the heat dissipation circuit on one side fails, improves the redundancy and efficiency of the thermal management system, and simplifies the control structure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-21
- Publication Date
- 2026-03-03
AI Technical Summary
Existing distributed drive thermal management systems cannot dissipate heat in time when a single-sided drive cooling circuit fails, leading to damage to motor drive components. They also lack overall control precision and redundancy, especially when there is a drive coupling disconnection structure, in which the thermal management system cannot effectively dissipate heat.
The distributed dual-electric drive thermal management system adopts a dual-electric drive thermal management system. Through the first and second unidirectional heat dissipation output oil circuits, oil circuit switches and oil circuit coupling switches, it realizes the switching between redundant heat dissipation of the dual motors and independent heat dissipation mode of the single side. The design of check valve and oil circuit switch ensures that the oil does not flow back. Combined with differential lock, it realizes the redundancy and independent control of the heat dissipation circuit.
It improves the redundancy and efficiency of the thermal management system, avoids motor damage, enhances system safety and applicability, simplifies the control structure, and reduces system complexity.
Smart Images
Figure CN223962004U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of thermal management and control technology, and in particular to a distributed dual-electric drive thermal management system. Background Technology
[0002] A distributed drive system consists of different motors that independently drive each wheel of a vehicle. The torque and speed of each wheel can be precisely controlled independently by different or the same controllers. As a result, vehicles with this drive system can have some special advantages, such as a smaller turning radius and more efficient vehicle stability control, which improves the vehicle's handling performance. At the same time, multiple motors can achieve higher power.
[0003] Existing distributed drive thermal management systems are based on the concept of a three-in-one electric drive system, which combines individual components and manages them separately. This lacks overall consideration and control precision. Furthermore, with the addition of a drive coupling disconnection structure (differential lock), the drive coupling disconnection structure also places corresponding heat dissipation requirements on the thermal management system. In the event of a failure in the heat dissipation circuit of a single drive, the existing distributed drive thermal management system cannot support timely heat dissipation for the motor drive in the faulty circuit. This results in the motor drive in the faulty circuit not being able to dissipate heat in time, ultimately causing complete damage to the device or more serious problems. Utility Model Content
[0004] In view of this, the purpose of this application is to provide at least one distributed dual-electric drive thermal management system. Through the system provided by this application, the switching between redundant heat dissipation of dual motors and independent heat dissipation mode of single motor can be realized, thereby improving the redundancy and efficiency of thermal management and avoiding motor damage.
[0005] This application mainly includes the following aspects:
[0006] In a first aspect, embodiments of this application provide a distributed dual-electric drive thermal management system. The distributed dual-electric drive thermal management system includes a first unidirectional heat dissipation output oil circuit and a first oil circuit switch corresponding to a first motor, a second unidirectional heat dissipation output oil circuit and a second oil circuit switch corresponding to a second motor, and an oil circuit coupling switch. The input end of the first unidirectional heat dissipation output oil circuit is connected to an oil sump. The first output end of the first unidirectional heat dissipation output oil circuit is connected to one end of the oil circuit coupling switch. The second output end of the first unidirectional heat dissipation output oil circuit is connected to one end of the first oil circuit switch. The other end of the first oil circuit switch is connected to the input end of the first motor, and the output end of the first motor is connected to the oil sump. Similarly, the input end of the second unidirectional heat dissipation output oil circuit is connected to the oil sump. The first output end of the second unidirectional heat dissipation output oil circuit is connected to the other end of the oil circuit coupling switch. The second output end of the second unidirectional heat dissipation output oil circuit is connected to one end of the second oil circuit switch. The other end of the second oil circuit switch is connected to the input end of the second motor, and the output end of the second motor is connected to the oil sump.
[0007] In one possible implementation, the distributed dual-electric drive thermal management system further includes a first transmission box corresponding to the first motor and a second transmission box corresponding to the second motor. The first input terminal of the first transmission box is connected to the first output terminal of the first unidirectional heat dissipation oil circuit, the second input terminal of the first transmission box is connected to the first output terminal of the first motor, the second output terminal of the first motor is connected to the oil sump, and the output terminal of the first transmission box is connected to the oil sump. Similarly, the first input terminal of the second transmission box is connected to the first output terminal of the second unidirectional heat dissipation oil circuit, the second input terminal of the second transmission box is connected to the first output terminal of the second motor, the second output terminal of the second motor is connected to the oil sump, and the output terminal of the second transmission box is connected to the oil sump.
[0008] In one possible implementation, the first unidirectional heat dissipation output oil circuit includes a first oil circuit delivery module, a first one-way valve, and a first oil circuit cooling module; the second unidirectional heat dissipation output oil circuit includes a second oil circuit delivery module, a second one-way valve, and a second oil circuit cooling module. The input end of the first oil circuit delivery module is connected to an oil sump; the output end of the first oil circuit delivery module is connected to the input end of the first one-way valve; the output end of the first one-way valve is connected to the input end of the first oil circuit cooling module; the first output end of the first oil circuit cooling module is connected to one end of an oil circuit coupling switch; and the second output end of the first oil circuit cooling module is connected to one end of a first oil circuit switch. Similarly, the input end of the second oil circuit delivery module is connected to an oil sump; the output end of the second oil circuit delivery module is connected to the input end of the second one-way valve; the output end of the second one-way valve is connected to the input end of the second oil circuit cooling module; the first output end of the second oil circuit cooling module is connected to the other end of the oil circuit coupling switch; and the second output end of the second oil circuit cooling module is connected to one end of the second oil circuit switch.
[0009] In one possible implementation, the first oil circuit delivery module includes a first electronic oil pump, and the second oil circuit delivery module includes a second electronic oil pump, wherein the input end of the first electronic oil pump is connected to the oil sump, and the output end of the first electronic oil pump is connected to the input end of the first check valve; the input end of the second electronic oil pump is connected to the oil sump, and the output end of the second electronic oil pump is connected to the input end of the second check valve.
[0010] In one possible implementation, the first oil circuit delivery module further includes a first oil filter, and the second oil circuit delivery module further includes a second oil filter, wherein the input end of the first oil filter is connected to the output end of the first electronic oil pump, and the output end of the first oil filter is connected to the input end of the first check valve; the input end of the second oil filter is connected to the output end of the second electronic oil pump, and the output end of the second oil filter is connected to the input end of the second check valve.
[0011] In one possible implementation, the first motor includes a first motor stator, and the second motor includes a second motor stator, wherein the input terminal of the first motor stator is connected to the output terminal of a first oil circuit switch, the output terminal of the first motor stator is connected to an oil sump, the input terminal of the second motor stator is connected to the output terminal of a second oil circuit switch, and the output terminal of the second motor stator is connected to an oil sump.
[0012] In one possible implementation, the first motor further includes a first rotor and a bearing, and the second motor further includes a second rotor and a bearing, wherein the input end of the first rotor and bearing is connected to the output end of the first oil circuit switch, the first output end of the first rotor and bearing is connected to the second input end of the first transmission box, and the second output end of the first rotor and bearing is connected to the oil sump; the input end of the second rotor and bearing is connected to the output end of the second oil circuit switch, the first output end of the second rotor and bearing is connected to the second input end of the second transmission box, and the second output end of the second rotor and bearing is connected to the oil sump.
[0013] In one possible implementation, the distributed dual-electric drive thermal management system further includes a differential lock arranged between a first transmission box and a second transmission box, wherein a first input terminal of the differential lock is connected to the output terminal of the first transmission box, a second input terminal of the differential lock is connected to the output terminal of the second transmission box, and the output terminal of the differential lock is connected to the oil sump.
[0014] In one possible implementation, the distributed dual-electric drive thermal management system further includes a differential lock arranged between the first motor and the second motor, wherein the first input terminal of the differential lock is connected to the second output terminal of the first motor, the second input terminal of the differential lock is connected to the second output terminal of the second motor, and the output terminal of the differential lock is connected to the oil sump.
[0015] In one possible implementation, the distributed dual-electric drive thermal management system further includes a differential lock arranged between the first motor and the second motor, wherein the first input terminal of the differential lock is connected to the second output terminal of the first rotor and bearing, the second input terminal of the differential lock is connected to the second output terminal of the second rotor and bearing, and the output terminal of the differential lock is connected to the oil sump.
[0016] This application provides a distributed dual-electric drive thermal management system, comprising: an input terminal of a first unidirectional heat dissipation output oil circuit connected to an oil sump; a first output terminal of the first unidirectional heat dissipation output oil circuit connected to one end of an oil circuit coupling switch; a second output terminal of the first unidirectional heat dissipation output oil circuit connected to one end of a first oil circuit switch; the other end of the first oil circuit switch connected to the input terminal of a first motor; and the output terminal of the first motor connected to the oil sump. Similarly, a second unidirectional heat dissipation output oil circuit has its input terminal connected to the oil sump; its first output terminal of the second unidirectional heat dissipation output oil circuit connected to the other end of an oil circuit coupling switch; its second output terminal of the second unidirectional heat dissipation output oil circuit connected to one end of a second oil circuit switch; the other end of the second oil circuit switch connected to the input terminal of a second motor; and the output terminal of the second motor connected to the oil sump. This application enables switching between dual-sided motor redundant heat dissipation and single-sided independent heat dissipation modes, improving thermal management redundancy and efficiency, and preventing motor damage.
[0017] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description
[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is one of the structural schematic diagrams of a distributed dual-electric drive thermal management system provided in the embodiments of this application;
[0020] Figure 2 This is a second schematic diagram of a distributed dual-electric drive thermal management system provided in an embodiment of this application;
[0021] Figure 3 This is shown as a third schematic diagram of the structure of a distributed dual-electric-driven thermal management system provided in an embodiment of this application;
[0022] Figure 4 The fourth schematic diagram shows a distributed dual-electric drive thermal management system provided in an embodiment of this application. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the drawings in this application are for illustrative and descriptive purposes only and are not intended to limit the scope of protection of this application. Furthermore, it should be understood that the schematic drawings are not drawn to scale. The flowcharts used in this application illustrate operations implemented according to some embodiments of this application. It should be understood that the operations in the flowcharts may not be implemented in sequence, and steps without logical contextual relationships may be reversed or implemented simultaneously. In addition, those skilled in the art, guided by the content of this application, may add one or more other operations to the flowcharts, or remove one or more operations from the flowcharts.
[0024] Furthermore, the described embodiments are merely some, not all, of the embodiments of this application. The components of the embodiments of this application described and illustrated herein can typically be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0025] Existing distributed-drive thermal management systems have the following defects / problems:
[0026] 1. Currently applicable distributed drive thermal management systems are mostly based on the combination of three-in-one electric drive thermal management systems. They adopt a pure divide-and-conquer single control management, that is, each drive heat dissipation circuit is isolated and performs independent heat dissipation. This approach is highly operable and replicable, but the independent drives are controlled and managed separately, lacking overall consideration for system applicability. For example, when the heat dissipation circuit corresponding to a single drive fails, the existing independent control structure cannot achieve redundant heat dissipation for the faulty circuit, ultimately causing the heat dissipation components in the faulty circuit to be damaged due to excessive temperature.
[0027] 2. Currently, there is no suitable thermal management system for a dual-motor distributed electric drive system with a drive coupling disconnection structure.
[0028] 3. The previously applicable distributed drive thermal management system has a large number of control devices such as solenoid valves and check valves, which greatly increases the difficulty of system control and the complexity of structural layout.
[0029] Based on this, this application provides a distributed dual-electric drive thermal management system. The system enables switching between redundant cooling for both motors and independent cooling for one side, improving thermal management redundancy and efficiency, and preventing motor damage. Specifically:
[0030] Please see Figure 1 , Figure 1 This illustration shows one of the structural schematic diagrams of a distributed dual-electric drive thermal management system provided in an embodiment of this application. For example... Figure 1 As shown, the distributed dual-electric drive thermal management system includes a first unidirectional heat dissipation output oil circuit 12 and a first oil circuit switch K1 corresponding to the first motor 11, a second unidirectional heat dissipation output oil circuit 22 and a second oil circuit switch K2 corresponding to the second motor 21, and an oil circuit coupling switch K3. The input end of the first unidirectional heat dissipation output oil circuit 12 is connected to the oil tank 3, the first output end of the first unidirectional heat dissipation output oil circuit 12 is connected to one end of the oil circuit coupling switch K3, the second output end of the first unidirectional heat dissipation output oil circuit 12 is connected to one end of the first oil circuit switch K1, the other end of the first oil circuit switch K1 is connected to the input end of the first motor 11, and the output end of the first motor 11 is connected to the oil tank 3.
[0031] The input end of the second unidirectional heat dissipation output oil circuit 22 is connected to the oil tank 3. The first output end of the second unidirectional heat dissipation output oil circuit 22 is connected to the other end of the oil circuit coupling switch K3. The second output end of the second unidirectional heat dissipation output oil circuit 22 is connected to one end of the second oil circuit switch K2. The other end of the second oil circuit switch K2 is connected to the input end of the second motor 21. The output end of the second motor 21 is connected to the oil tank 3.
[0032] Preferably, the first unidirectional heat dissipation output oil path 12 and the second unidirectional heat dissipation output oil path 22 are symmetrically distributed on both sides of the oil tank 3, and the oil paths of the first unidirectional heat dissipation output oil path 12 and the second unidirectional heat dissipation output oil path 22 are finally converged into the same oil tank 3.
[0033] In this application, the first oil circuit switch K1 is used to connect or disconnect the cooling and lubricating oil supplied to the first motor 11, the second oil circuit switch K2 is used to connect or disconnect the cooling and lubricating oil supplied to the second motor 21, and the oil circuit coupling switch K3 is used to connect and disconnect the cooling and lubricating oil supplied to the first motor 11 and the second motor 21.
[0034] Specifically, when the oil circuit coupling switch K3 is not turned on:
[0035] The first motor 11 is independently cooled by a combination of the first unidirectional heat dissipation output oil circuit 12 and the first oil circuit switch K1. That is, the heat dissipation circuit formed by it is oil tank 3---first unidirectional heat dissipation output oil circuit 12---first oil circuit switch K1---first motor 11---oil tank 3. The second motor 21 is independently cooled by a combination of the second unidirectional heat dissipation output oil circuit 22 and the second oil circuit switch K2. That is, the heat dissipation circuit formed by it is oil tank 3---second unidirectional heat dissipation output oil circuit 22---second oil circuit switch K2---second motor 21---oil tank 3.
[0036] When the oil circuit coupling switch K3 is turned on, redundant heat dissipation is achieved on both sides of the oil circuit. The oil circuit that has not failed replaces the oil circuit that has failed for heat dissipation. Specifically, when the first unidirectional heat dissipation output oil circuit 12 fails, the heat dissipation circuit formed is: oil tank 3 --- second unidirectional heat dissipation output oil circuit 22 --- second oil circuit switch K2 --- second motor 21 --- oil tank 3, and oil tank 3 --- second unidirectional heat dissipation output oil circuit 22 --- oil circuit coupling switch K3 --- first unidirectional heat dissipation output oil circuit 12 --- first oil circuit switch K1 --- first click 11 --- oil tank 3.
[0037] When the second unidirectional heat dissipation output oil circuit 22 fails, the heat dissipation circuit formed is: oil sump 3 --- first unidirectional heat dissipation output oil circuit 12 --- first oil circuit switch K1 --- first motor 11 --- oil sump 3, and oil sump 3 --- first unidirectional heat dissipation output oil circuit 12 --- oil circuit coupling switch K3 --- second unidirectional heat dissipation output oil circuit 22 --- second oil circuit switch K2 --- second motor 21 --- oil sump 3.
[0038] In a preferred embodiment, please refer to Figure 2 , Figure 2 This is a second schematic diagram of a distributed dual-electric-driven thermal management system provided in an embodiment of this application. Figure 2 As shown, the distributed dual-electric drive thermal management system also includes a first transmission box 13 corresponding to the first motor 11 and a second transmission box 23 corresponding to the second motor 21. The first motor 11 includes a first stator 110 and a first rotor and bearing 111, and the second motor 21 includes a second stator 210 and a second rotor and bearing 211.
[0039] The first one-way heat dissipation output oil circuit 12 includes a first oil circuit delivery module 121, a first one-way valve 122 and a first oil circuit cooling module 123, wherein the first oil circuit delivery module 121 includes a first electronic oil pump 1210 and a first oil filter 1211.
[0040] The second one-way heat dissipation output oil circuit 22 includes a second oil circuit delivery module 221, a second one-way valve 222, and a second oil circuit cooling module 223. The second oil circuit delivery module 221 includes a second electronic oil pump 2210 and a second oil filter 2211.
[0041] In one specific embodiment, the input terminal of the first electronic oil pump 1210 is connected to the oil sump 3, the output terminal of the first electronic oil pump 1210 is connected to the input terminal of the first oil filter 1211, the output terminal of the first oil filter 1211 is connected to the input terminal of the first one-way valve 122, the output terminal of the first one-way valve 122 is connected to the input terminal of the first oil circuit cooling module 123, the first output terminal of the first oil circuit cooling module 123 is connected to one end of the oil circuit coupling switch K3 and the first input terminal of the first transmission box 13, and the second output terminal of the first oil circuit cooling module 123 is connected to one end of the first oil circuit switch K1.
[0042] The other end of the first oil circuit switch K1 is connected to the input end of the first stator 110 and the input end of the first rotor and bearing 111, respectively. The output end of the first stator 110 is connected to the oil tank 3. The first output end of the first rotor and bearing 111 is connected to the second input end of the first transmission box 13. The second output end of the first rotor and bearing 111 is connected to the oil tank 3. The output end of the first transmission box 13 is connected to the oil tank 3.
[0043] In another specific embodiment, the input end of the second electronic oil pump 2210 is connected to the oil sump 3, the output end of the second electronic oil pump 2210 is connected to the input end of the second oil filter 2211, the output end of the second oil filter 2211 is connected to the input end of the second one-way valve 222, the output end of the second one-way valve 222 is connected to the input end of the second oil circuit cooling module 223, the first output end of the second oil circuit cooling module 223 is connected to the other end of the oil circuit coupling switch K3 and the first input end of the second transmission box 23, and the second output end of the second oil circuit cooling module 223 is connected to one end of the second oil circuit switch K2.
[0044] The other end of the second oil circuit switch K2 is connected to the input end of the second stator 210 and the input end of the second rotor and bearing 211 respectively. The output end of the second stator 210 is connected to the oil tank 3. The first output end of the second rotor and bearing 211 is connected to the second input end of the second transmission box 23. The second output end of the second rotor and bearing 211 is connected to the oil tank 3. The output end of the second transmission box 23 is connected to the oil tank 3.
[0045] In this application, a check valve is introduced into the unidirectional heat dissipation output oil circuit. The purpose is to ensure that the oil in the unidirectional branch oil circuit does not flow back to the oil sump through the corresponding oil filter and electronic oil pump.
[0046] In this application, a one-way valve, an oil circuit switch, and an oil circuit coupling switch are used to achieve mutual backup of the lubrication oil circuits on both sides of the oil sump 3, which improves the adaptability of the thermal management system to vehicle use scenarios, reduces the power consumption of the oil pump through precise control, and indirectly improves the safety redundancy and functional diversity of the thermal management system.
[0047] In a preferred embodiment, the distributed dual-electric drive thermal management system further includes a differential lock, which is arranged between the first transmission box and the second transmission box, or between the first motor and the second motor.
[0048] Please see Figure 3 , Figure 3 This is shown as a third schematic diagram of a distributed dual-electric-driven thermal management system provided in an embodiment of this application. Figure 3 As shown, when the differential lock 4 is arranged between the first and second transmission boxes, its corresponding connection method is as follows:
[0049] The first input terminal of the differential lock 4 is connected to the output terminal of the first transmission box 13, the second input terminal of the differential lock 4 is connected to the output terminal of the second transmission box 23, and the output terminal of the differential lock 4 is connected to the oil sump 3.
[0050] Please see Figure 4 , Figure 4 This is shown as the fourth schematic diagram of a distributed dual-electric-driven thermal management system provided in an embodiment of this application. Figure 4 As shown, when the differential lock 4 is positioned between the first motor 11 and the second motor 21, its corresponding connection method is as follows:
[0051] The first input terminal of the differential lock 4 is connected to the second output terminal of the first rotor and bearing 111, the second input terminal of the differential lock 4 is connected to the second output terminal of the second rotor and bearing 211, and the output terminal of the differential lock 4 is connected to the oil sump 3.
[0052] Differential lock 4 is a coupling disconnection mechanism. Differential lock 4 also has corresponding heat dissipation requirements. This application can provide different oil circuit layout connection methods according to the arrangement position of differential lock 4. When both sides of the oil circuit are operating independently or when one side of the oil circuit fails, the combination of oil circuit switch and oil circuit coupling switch can achieve continuous and effective heat dissipation of differential lock.
[0053] Preferably, all connections involved in this application are between heat dissipation oil pipes, and the oil circuit switch and oil circuit coupling switch can be solenoid valves.
[0054] In one specific embodiment, in the distributed dual-electric drive thermal management system provided by this application, the different states of the first electronic oil pump 1210, the second electronic oil pump 2210, the first motor 11, the second motor 21, and the differential lock 4 form multiple operating scenarios of the distributed dual-electric drive thermal management system. Under different operating scenarios, different on / off state combinations between the first oil circuit switch K1, the second oil circuit switch K2, and the oil circuit coupling switch K3 adapt to different operating scenarios, as shown in Tables 1 and 2. Table 1 shows a data table of multiple operating scenarios of a distributed dual-electric drive thermal management system provided by an embodiment of this application, and Table 2 shows a data table of oil circuit switch on / off state combinations under different operating scenarios provided by an embodiment of this application.
[0055] Table 1:
[0056]
[0057]
[0058] In Table 1, √ represents normal operating status, × represents fault status (i.e., equipment malfunction), and ⊙ represents short-term abnormal operating status (i.e., functional abnormality, such as motor overheating).
[0059]
[0060] Specifically, as shown in Table 1, when the first electronic oil pump 1210, the second electronic oil pump 2210, the first motor 11 and the second motor 21 are in scenarios (3), (4), (7), (8), (15), (16), (17) and (18) respectively, the first oil circuit valve K1, the second oil circuit valve K2 and the third oil circuit valve K3 are all in the conducting state, so that the second target thermal management module with normal oil circuit can provide oil for heat dissipation to the first target thermal management module with disconnected oil circuit. The operation status of combination (2) is as described above, and will not be elaborated further here.
[0061] When the first oil circuit switch K1, the second oil circuit switch K2 and the oil circuit coupling switch K3 are in the state shown in combination (3) in Table 2, in addition to being applicable to scenario (6) and scenario (10), they are also applicable to special scenarios such as jumping from scenario (1) to scenario (11), jumping from scenario (2) to scenario (12) or jumping from scenario (4) to scenario (15). Similarly, combination (4) is as described above and will not be elaborated on here.
[0062] The technical solution provided in this application addresses the layout problems, functional deficiencies, and insufficient safety redundancy of existing thermal management systems. It proposes a distributed dual-electric drive thermal management system that includes an electronic oil pump, oil filter, check valve, oil circuit switch, and other necessary oil circuits. This solves the problem that there is currently no thermal management system specifically designed for dual-motor distributed electric drive systems with coupling disconnection mechanisms (differential locks), and improves the applicability of the thermal management system to more scenarios and its safety redundancy.
[0063] Therefore, the advantages of this application are as follows:
[0064] 1. Based on different motors, corresponding heat dissipation management circuits are designed in conjunction with oil circuit switches. Each heat dissipation management circuit includes an electronic oil pump, an oil filter and a one-way valve. Each heat dissipation management circuit is equipped with an oil circuit switch to realize independent control of heat dissipation for the motor in its respective oil circuit. The heat dissipation management circuits share an oil sump to realize the connection of the overall thermal management system. The overall structure is simple and the components are easy to obtain.
[0065] 2. A one-way valve is used in the heat dissipation management circuit to prevent the oil in the corresponding oil circuit from flowing back to the oil filter and electronic oil pump, and then flowing back to the oil sump.
[0066] 3. A single oil circuit switch is used to control the flow of cooling and lubricating oil in a single motor branch (leading to the stator and rotor and bearings on one side of the motor).
[0067] 4. An oil circuit switch is used to connect and disconnect the oil circuits of the corresponding transmission boxes of the two motors, so that when the oil circuit on one side is disconnected, heat dissipation can continue through the oil circuit on the other side that is not disconnected.
[0068] 6. The distributed dual-electric drive thermal management system provided in this application has a simple oil circuit, uses a small number of components, and is simple, efficient, and easy to use.
[0069] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A distributed dual electric drive thermal management system, characterized by, The distributed double-electric-drive thermal management system comprises a first one-way heat dissipation output oil circuit and a first oil circuit switch corresponding to the first electric machine, a second one-way heat dissipation output oil circuit and a second oil circuit switch corresponding to the second electric machine, and an oil circuit coupling switch, wherein the input end of the first one-way heat dissipation output oil circuit is connected to the oil pool, the first output end of the first one-way heat dissipation output oil circuit is connected to one end of the oil circuit coupling switch, the second output end of the first one-way heat dissipation output oil circuit is connected to one end of the first oil circuit switch, the other end of the first oil circuit switch is connected to the input end of the first electric machine, and the output end of the first electric machine is connected to the oil pool; the input end of the second one-way heat dissipation output oil circuit is connected to the oil pool, the first output end of the second one-way heat dissipation output oil circuit is connected to the other end of the oil circuit coupling switch, the second output end of the second one-way heat dissipation output oil circuit is connected to one end of the second oil circuit switch, the other end of the second oil circuit switch is connected to the input end of the second electric machine, and the output end of the second electric machine is connected to the oil pool.
2. The distributed dual electric drive thermal management system of claim 1, wherein, The distributed double-electric-drive thermal management system further comprises a first transmission box corresponding to the first electric machine and a second transmission box corresponding to the second electric machine, wherein the first input end of the first transmission box is connected to the first output end of the first one-way heat dissipation output oil circuit, the second input end of the first transmission box is connected to the first output end of the first electric machine, the second output end of the first electric machine is connected to the oil pool, and the output end of the first transmission box is connected to the oil pool; the first input end of the second transmission box is connected to the first output end of the second one-way heat dissipation output oil circuit, the second input end of the second transmission box is connected to the first output end of the second electric machine, the second output end of the second electric machine is connected to the oil pool, and the output end of the second transmission box is connected to the oil pool.
3. The distributed dual electric drive thermal management system of claim 1, wherein, The first one-way heat dissipation output oil circuit comprises a first oil circuit conveying module, a first one-way valve and a first oil circuit cooling module, and the second one-way heat dissipation output oil circuit comprises a second oil circuit conveying module, a second one-way valve and a second oil circuit cooling module, wherein the input end of the first oil circuit conveying module is connected to the oil pool, the output end of the first oil circuit conveying module is connected to the input end of the first one-way valve, the output end of the first one-way valve is connected to the input end of the first oil circuit cooling module, the first output end of the first oil circuit cooling module is connected to one end of the oil circuit coupling switch, and the second output end of the first oil circuit cooling module is connected to one end of the first oil circuit switch; the input end of the second oil circuit conveying module is connected to the oil pool, the output end of the second oil circuit conveying module is connected to the input end of the second one-way valve, the output end of the second one-way valve is connected to the input end of the second oil circuit cooling module, the first output end of the second oil circuit cooling module is connected to the other end of the oil circuit coupling switch, and the second output end of the second oil circuit cooling module is connected to one end of the second oil circuit switch.
4. The distributed dual electric drive thermal management system of claim 3, wherein, The first oil circuit conveying module comprises a first electronic oil pump, and the second oil circuit conveying module comprises a second electronic oil pump, wherein the input end of the first electronic oil pump is connected to the oil pool, and the output end of the first electronic oil pump is connected to the input end of the first one-way valve; the input end of the second electronic oil pump is connected to the oil pool, and the output end of the second electronic oil pump is connected to the input end of the second one-way valve.
5. The distributed dual electric drive thermal management system of claim 4, wherein, The first oil circuit conveying module further comprises a first oil filter, and the second oil circuit conveying module further comprises a second oil filter, The input end of the first oil filter is connected to the output end of the first electronic oil pump, and the output end of the first oil filter is connected to the input end of the first one-way valve. The input end of the second oil filter is connected to the output end of the second electronic oil pump, and the output end of the second oil filter is connected to the input end of the second one-way valve.
6. The distributed dual electric drive thermal management system of claim 2, wherein, The first motor comprises a first motor stator, and the second motor comprises a second motor stator, The input end of the first motor stator is connected to the output end of the first oil path switch, and the output end of the first motor stator is connected to the oil pool. The input end of the second motor stator is connected to the output end of the second oil path switch, and the output end of the second motor stator is connected to the oil pool.
7. The distributed dual electric drive thermal management system of claim 2, wherein, The first motor further comprises a first rotor and a bearing, and the second motor further comprises a second rotor and a bearing, The input end of the first rotor and the bearing is connected to the output end of the first oil path switch, the first output end of the first rotor and the bearing is connected to the second input end of the first transmission box, and the second output end of the first rotor and the bearing is connected to the oil pool. The input end of the second rotor and the bearing is connected to the output end of the second oil path switch, the first output end of the second rotor and the bearing is connected to the second input end of the second transmission box, and the second output end of the second rotor and the bearing is connected to the oil pool.
8. The distributed dual electric drive thermal management system of claim 2, wherein, The distributed dual-electric-drive thermal management system further comprises a differential lock arranged between the first transmission box and the second transmission box, The first input end of the differential lock is connected to the output end of the first transmission box, the second input end of the differential lock is connected to the output end of the second transmission box, and the output end of the differential lock is connected to the oil pool.
9. The distributed dual electric drive thermal management system of claim 2, wherein, The distributed dual-electric-drive thermal management system further comprises a differential lock arranged between the first motor and the second motor, The first input end of the differential lock is connected to the second output end of the first motor, the second input end of the differential lock is connected to the second output end of the second motor, and the output end of the differential lock is connected to the oil pool.
10. The distributed dual electric drive thermal management system of claim 7, wherein, The distributed dual-electric-drive thermal management system further comprises a differential lock arranged between the first motor and the second motor, The first input end of the differential lock is connected to the second output end of the first rotor and the bearing, the second input end of the differential lock is connected to the second output end of the second rotor and the bearing, and the output end of the differential lock is connected to the oil pool.