Distributed drive vehicle hub motor dual water circuit intelligent temperature control cooling system

Abstract

The present invention is applicable to the field of motor technology, and provides a dual-water intelligent temperature control cooling system for hub motors of distributed drive vehicles, including: cooling pipe 1 and cooling pipe 2, which are provided with four groups and are respectively installed in hub motor 1, hub motor 2, hub motor 3 and hub motor 4, cooling pipe 1 and cooling pipe 2 are connected in series or in parallel, and the connection state is switched based on the temperature of the hub motor; water pump and condenser, the coolant flows out of the water pump, cools hub motor 1, hub motor 2, hub motor 3 and hub motor 4 through cooling pipe 1 and cooling pipe 2, flows into the condenser for cooling, and then flows into the water pump. The present invention is equipped with four independent cooling pipes 1 and 2, and the connection state can be switched, which can solve the problem that the four hub motors of the distributed drive vehicle are unevenly heated when running under different working conditions, and a single liquid cooling pipe cannot accurately control the cooling effect of each motor.

Description

Technical Field

[0001] The present invention belongs to the technical field of motors, and in particular relates to a dual-water-path intelligent temperature control cooling system for a hub motor of a distributed drive vehicle. Background Art

[0002] The automobile distributed drive system refers to placing the wheel hub motor inside the wheel rim, integrating drive, transmission and braking, which greatly simplifies the mechanical structure of the vehicle and accelerates the process of lightweighting the vehicle; the wheel hub motor directly applies power to the wheel, eliminating complex transmission components such as reducers and drive shafts, thereby achieving higher transmission efficiency; at the same time, the distributed drive system can identify the road conditions and driver's intentions at the time by independently controlling the motor of each wheel, and realizes the precise distribution of power output, including front drive, rear drive and four-wheel drive, which not only improves the sensitivity of control, but also enhances the stability of the vehicle. With the development of distributed drive systems, the performance requirements for wheel hub motors are getting higher and higher, and motor heating is the main reason for limiting the high power density of motors and high performance of vehicles.

[0003] The cooling system of current distributed drive vehicles generally adopts a single-channel liquid cooling strategy, which often leads to a significant temperature rise at the end of the coolant flow path, limiting its ability to accurately cool the wheel hub motor, and thus failing to fully meet the demand for efficient heat dissipation of motor components; in addition, this non-differentiated cooling method is also difficult to ensure the overall optimization of the vehicle's thermal management system, and has neither maximized the cooling efficiency of the wheel hub motor nor effectively promoted the maintenance of the vehicle's thermal balance, thus affecting the vehicle's overall performance and reliability. Therefore, more advanced and efficient distributed cooling technology, in order to achieve differentiated cooling of different heat load areas, has become a key research direction for improving the cooling performance of distributed drive vehicles. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide a dual-water-path intelligent temperature control cooling system for a distributed drive vehicle hub motor, aiming to solve the problems raised in the above-mentioned background technology.

[0005] The embodiment of the present invention is implemented as follows: a dual-water-path intelligent temperature control cooling system for a hub motor of a distributed drive vehicle comprises:

[0006] There are four groups of cooling pipes 1 and 2, which are respectively installed in the hub motor 1, the hub motor 2, the hub motor 3 and the hub motor 4. The cooling pipes 1 and 2 are independently distributed. The cooling pipes 1 and 2 are connected in series or in parallel, and the connection state is switched based on the temperature of the hub motor.

[0007] Water pump and condenser, the coolant flows out from the water pump, passes through cooling pipe 1 and cooling pipe 2 to cool hub motor 1, hub motor 2, hub motor 3 and hub motor 4, flows into the condenser for cooling, and then flows into the water pump.

[0008] Preferably, the cooling pipe 1 and the cooling pipe 2 are centrally symmetrically distributed and installed on the rotating shaft. The coolant flows through the stator winding, the stator, the permanent magnet and the rotor, and extends outward to directly cool the stator winding.

[0009] Preferably, the cooling pipeline one is provided with a wheel hub motor water cooling port one and a wheel hub motor water cooling port four, and the cooling pipeline two is provided with a wheel hub motor water cooling port two and a wheel hub motor water cooling port three.

[0010] Preferably, the cooling system further comprises:

[0011] Water valve 1, the water cooling port 1 and the water cooling port 2 of the hub motor are connected to the water valve 1, and the water valve 1 is provided with four liquid control valves a, b, c, and d. The a and d of the water valve 1 are connected to the water inlet 1, and the b and c of the water valve 1 are connected to the water outlet 1;

[0012] Water valve 2, the hub motor water cooling port 3 and the hub motor water cooling port 4 are connected to water valve 2, and the water valve 2 is provided with four liquid control valves a', b', c', and d'. a' and d' of the water valve 2 are connected to water inlet 2, and b' and c' of the water valve 2 are connected to water outlet 2.

[0013] Preferably, when the cooling pipe 1 and the cooling pipe 2 are connected in series, a' and b' are connected in the water valve 2, a and d are connected in the water valve 1, and b and c are connected.

[0014] Preferably, when the cooling pipe 1 and the cooling pipe 2 are in parallel state, a', b' and c' in the water valve 2 are connected, and a, b and d in the water valve 1 are connected.

[0015] The dual-water-path intelligent temperature control cooling system for the wheel hub motor of a distributed drive vehicle provided by an embodiment of the present invention aims at the problems in the prior art and is equipped with four sets of independent cooling pipes 1 and cooling pipes 2, and their connection states can be switched. Under the action of the water pump and the condenser, the four sets of cooling pipes 1 and cooling pipes 2 are respectively controlled to complete the fixed-point cooling of each wheel hub motor, which can solve the problem that the four wheel hub motors of the distributed drive vehicle are unevenly heated when running under different working conditions, and a single liquid cooling pipe cannot accurately control the cooling effect of each motor. The water pump and the condenser can be specifically placed in the center of the vehicle, which can effectively ensure the temperature balance of the cooling water inlets of the front and rear four wheel hubs, while reducing the flow resistance, thereby enhancing the overall cooling performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1An axial cross-sectional view of a dual-water-path intelligent temperature control cooling system for a distributed drive vehicle hub motor provided by an embodiment of the present invention;

[0017] Figure 2 A distribution diagram of cooling pipe 1 and cooling pipe 2 in a dual-water-path intelligent temperature control cooling system for a distributed drive vehicle hub motor provided by an embodiment of the present invention;

[0018] Figure 3 A schematic diagram of the structures of cooling pipe 1 and cooling pipe 2 in a dual-water-path intelligent temperature control cooling system for a distributed drive vehicle hub motor provided in an embodiment of the present invention.

[0019] In the accompanying drawings: 1-wheel hub motor 1, 2-cooling pipe 1, 3-cooling pipe 2, 4-wheel hub motor water cooling port 1, 5-wheel hub motor water cooling port 2, 6-wheel hub motor water cooling port 3, 7-wheel hub motor water cooling port 4, 8-water valve 1, 9-water inlet 1, 10-water outlet 1, 11-water inlet 2, 12-water outlet 2, 13-water valve 2, 14-water pump, 15-condenser, 16-wheel hub motor 2, 17-wheel hub motor 3, 18-wheel hub motor 4, 101-rotating shaft, 102-stator winding, 103-statator, 104-permanent magnet, 105-rotor. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0022] like Figure 1 FIG. 1 is a structural diagram of a dual-water-path intelligent temperature control cooling system for a distributed drive vehicle hub motor provided by an embodiment of the present invention, comprising:

[0023] There are four groups of cooling pipe 1 2 and cooling pipe 2 3, which are respectively installed in wheel hub motor 1 1, wheel hub motor 2 16, wheel hub motor 3 17 and wheel hub motor 4 18. The cooling pipe 1 2 and cooling pipe 2 3 are independently distributed. The cooling pipe 1 2 and cooling pipe 2 3 are connected in series or in parallel, and the connection state is switched based on the temperature of the wheel hub motor.

[0024] The coolant flows out of the water pump 14 , passes through the cooling pipe 1 2 and the cooling pipe 2 3 to cool the hub motor 1 1 , the hub motor 2 16 , the hub motor 3 17 and the hub motor 4 18 , flows into the condenser 15 for cooling, and then flows into the water pump 14 .

[0025] In one embodiment of the present invention, the distributed drive vehicle hub motor dual-water-path intelligent temperature control cooling system is equipped with four sets of independent cooling pipes 1 2 and cooling pipes 2 3 to address the problems in the prior art, and their connection states can be switched. Under the action of the water pump 14 and the condenser 15, the four sets of cooling pipes 1 2 and cooling pipes 2 3 are respectively controlled to complete the fixed-point cooling of each hub motor, which can solve the problem that the four hub motors of the distributed drive vehicle are unevenly heated when running under different working conditions, and a single liquid cooling pipe cannot accurately control the cooling effect of each motor. The water pump 14 and the condenser 15 can be specifically placed in the center of the vehicle, which can effectively ensure the temperature balance of the cooling water inlets of the front and rear four hubs, while reducing the flow resistance, thereby enhancing the overall cooling performance.

[0026] like Figure 2 As shown, as a preferred embodiment of the present invention, the cooling pipe 1 2 and the cooling pipe 2 3 are centrally symmetrically distributed and installed on the rotating shaft 101. The coolant flows through the stator winding 102, the stator 103, the permanent magnet 104 and the rotor 105, and extends outward to directly cool the stator winding 102.

[0027] Two independent cooling pipes 1 2 and 2 3 are symmetrically arranged along the center of mass of the motor and are located in the rotating shaft 101 , and are used to cool the stator winding 102 , the stator 103 , the permanent magnet 104 and the rotor 105 in the hub motor. The extended part of the cooling pipe directly cools the end of the stator winding 102 .

[0028] like Figure 3 As shown, as a preferred embodiment of the present invention, the cooling pipe 1 2 is provided with a hub motor water cooling port 1 4 and a hub motor water cooling port 4 7, and the cooling pipe 2 3 is provided with a hub motor water cooling port 2 5 and a hub motor water cooling port 3 6.

[0029] like Figure 1 As shown, as a preferred embodiment of the present invention, the cooling system further includes:

[0030] A water valve 8, the wheel hub motor water cooling port 1 4 and the wheel hub motor water cooling port 2 5 are connected to the water valve 8, and the water valve 8 is provided with four liquid control valves a, b, c, and d. The a and d of the water valve 8 are connected to the water inlet 9, and the b and c of the water valve 8 are connected to the water outlet 10;

[0031] Water valve 2 13, the hub motor water cooling port 3 6 and the hub motor water cooling port 4 7 are connected to the water valve 2 13, and the water valve 2 13 is provided with four liquid control valves a', b', c', and d'. a' and d' of the water valve 2 13 are connected to the water inlet 2 11, and b' and c' of the water valve 2 13 are connected to the water outlet 2 12.

[0032] The hub motor water cooling port 1 4 and the hub motor water cooling port 2 5 are connected to the water valve 1 8, the hub motor water cooling port 3 6 and the hub motor water cooling port 4 7 are connected to the water valve 2 13, and the two are connected to the water inlet 1 9, the water outlet 1 10, the water inlet 2 11, and the water outlet 2 12. The coolant flows into the water inlet 1 9 and the water inlet 2 11, and flows out through the water outlet 1 10 and the water outlet 2 12 after being fully cooled. The coolant flow path is changed by adjusting the opening and closing of the a, b, c, d liquid control valves in the water valve 1 8 and the a', b', c', d' liquid control valves in the water valve 2 13, so as to complete the targeted cooling of the hub motor 1 1, the hub motor 2 16, the hub motor 3 17 and the hub motor 4 18, so that the four hub motors can adjust the connection mode of the four groups of cooling pipes 1 2 and the cooling pipes 2 3 according to their own temperatures, thereby significantly improving the cooling efficiency.

[0033] like Figure 1 As shown, as a preferred embodiment of the present invention, when the cooling pipe 1 2 and the cooling pipe 2 3 are in series connection, a' and b' in the water valve 2 13 are connected, a and d in the water valve 1 8 are connected, and b and c are connected;

[0034] like Figure 1 As shown, as a preferred embodiment of the present invention, when the cooling pipe 1 2 and the cooling pipe 2 3 are in parallel, a', b' and c' in the water valve 2 13 are connected, and a, b and d in the water valve 1 8 are connected.

[0035] When the temperature of the hub motor is low, the cooling pipe 1 2 and the cooling pipe 2 3 can be connected in series, the hub motor water cooling port 3 6 and the hub motor water cooling port 4 7 are connected together through the water valve 2 13, a' and b' in the water valve 2 13 are connected, a and d in the water valve 1 8 are connected, b and c are connected, the coolant flows in from the hub motor water cooling port 1 4, and flows out from the hub motor water cooling port 2 5, so as to fully cool the hub motor;

[0036] When the temperature of the hub motor is high, the cooling pipe 1 2 and the cooling pipe 2 3 can be connected in parallel, a', b' and c' in the water valve 2 13 are connected, a, b and d in the water valve 1 8 are connected, the hub motor water cooling port 1 4 and the hub motor water cooling port 2 5 are used as the coolant inlet, the hub motor water cooling port 3 6 and the hub motor water cooling port 4 7 are used as the coolant outlet, and the cooling flow is increased to achieve better heat exchange;

[0037] By detecting the temperatures of the four wheel hub motors, the connection status of cooling pipe 1 2 and cooling pipe 2 3 is intelligently switched.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Distributed drive vehicle hub motor dual water circuit intelligent temperature control cooling system, characterized in that: include: There are four groups of cooling pipes 1 (2) and 2 (3), which are respectively installed in the hub motor 1 (1), the hub motor 2 (16), the hub motor 3 (17) and the hub motor 4 (18). The cooling pipes 1 (2) and 2 (3) are independently distributed. The cooling pipes 1 (2) and 2 (3) are connected in series or in parallel, and the connection state is switched based on the temperature of the hub motor. A water pump (14) and a condenser (15), wherein the coolant flows out of the water pump (14), passes through cooling pipe 1 (2) and cooling pipe 2 (3), cools hub motor 1 (1), hub motor 2 (16), hub motor 3 (17) and hub motor 4 (18), then flows into the condenser (15) for cooling, and then flows into the water pump (14); The cooling pipe one (2) is provided with a wheel hub motor water cooling port one (4) and a wheel hub motor water cooling port four (7), and the cooling pipe two (3) is provided with a wheel hub motor water cooling port two (5) and a wheel hub motor water cooling port three (6); The cooling system further comprises: A water valve (8), the wheel hub motor water cooling port (4) and the wheel hub motor water cooling port (5) are connected to the water valve (8), the water valve (8) is provided with four liquid control valves a, b, c, and d, a and d of the water valve (8) are connected to the water inlet (9), and b and c of the water valve (8) are connected to the water outlet (10); A water-through valve 2 (13), the wheel hub motor water-cooling port 3 (6) and the wheel hub motor water-cooling port 4 (7) are connected to the water-through valve 2 (13), and the water-through valve 2 (13) is provided with four liquid control valves a', b', c', and d'. The a' and d' of the water-through valve 2 (13) are connected to the water inlet 2 (11), and the b' and c' of the water-through valve 2 (13) are connected to the water outlet 2 (12).

2. The dual-water-path intelligent temperature control cooling system for the hub motor of a distributed drive vehicle according to claim 1 is characterized in that: The cooling pipe 1 (2) and the cooling pipe 2 (3) are symmetrically distributed around the center and are installed on the rotating shaft (101). The cooling liquid flows through the stator winding (102), the stator (103), the permanent magnet (104) and the rotor (105), and extends outward to directly cool the stator winding (102).

3. The distributed drive vehicle hub motor dual-water-path intelligent temperature control cooling system according to claim 1 is characterized in that: When the cooling pipe 1 (2) and the cooling pipe 2 (3) are connected in series, a' and b' in the water valve 2 (13) are connected, a and d in the water valve 1 (8) are connected, and b and c are connected.

4. The distributed drive vehicle hub motor dual-water-path intelligent temperature control cooling system according to claim 1 is characterized in that: When the cooling pipe 1 (2) and the cooling pipe 2 (3) are in parallel connection, a', b' and c' in the water valve 2 (13) are connected, and a, b and d in the water valve 1 (8) are connected.

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