Driving motor device for electric automobile

Abstract

The invention relates to the technical field of driving motors, and discloses a driving motor device for an electric vehicle, the driving motor device comprises a casing, a motor body and a wiring port, the motor body is installed in the casing, the wiring port is installed outside the casing, the casing comprises a shell, a front end cover and a rear end cover, the shell sleeves the motor body, and through the design of a reinforcing layer and a pressure reduction assembly, the motor body is fixed to the front end cover and the rear end cover. When the driving motor device is subjected to external pressure, the pressure between the casing and the motor body is dispersed, so that the overall anti-pressure capability is remarkably improved, the casing can be effectively prevented from being deformed in long-time use, the service life of parts is prolonged, and the service life of the parts is prolonged. And meanwhile, impact and vibration from the road surface can be effectively absorbed and relieved through telescopic and compression actions of a pressure reducing rod and a pressure reducing spring in the pressure reducing assembly, the buffering performance is further enhanced through the design of a supporting rod and a supporting spring, and therefore more stable driving experience is provided, and the influence of noise and vibration on passengers is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of drive motors, and in particular to a drive motor device for an electric vehicle. Background Art

[0002] Electric vehicles are cars that use electric motors as a power source, and mainly store electrical energy through batteries. Compared with traditional internal combustion engine cars, electric vehicles have the advantages of environmental protection, low energy consumption, and low noise.

[0003] The drive motor is an important part of electric vehicles, responsible for converting electrical energy into mechanical energy to propel the vehicle. The drive motor generates a magnetic field inside the motor through current, which in turn generates rotation, thereby driving the wheels to move. It has a simple structure and is relatively easy to control, making it suitable for small electric vehicles. It is widely used and has the advantages of low cost and high efficiency, making it suitable for most electric vehicles. It has high efficiency and high power density, and can output more power in a smaller volume, and is often used in high-performance electric vehicles.

[0004] However, in order to reduce their own weight, the drive motors of most existing electric vehicles usually use lighter materials to make the drive motor housing, which may result in insufficient pressure resistance of the drive motor housing, and may cause the housing to deform after long-term use; therefore, it does not meet existing needs. In this regard, we propose a drive motor device for electric vehicles. Summary of the invention

[0005] The present invention provides a driving motor device for an electric vehicle. When the driving motor device is subjected to external pressure, the pressure between its casing and the motor body can be dispersed, which significantly improves the beneficial effect of overall pressure resistance. This solves the problem mentioned in the above background technology that most existing driving motors of electric vehicles usually use lighter materials to make the driving motor casing in order to reduce their own weight, which may result in insufficient pressure resistance of the driving motor casing, and thus may cause the casing to deform after long-term use.

[0006] The present invention provides the following technical solution: A driving motor device for an electric vehicle, comprising a housing, a motor body and a wiring port, wherein the motor body is installed in the housing, and the wiring port is installed outside the housing;

[0007] The housing comprises a shell, a front end cover and a rear end cover, the shell is sleeved outside the motor body, the front end cover is mounted on one end of the shell, the rear end cover is mounted on the other end of the shell, the front end cover is located at the front end of the motor body, the rear end cover is located at the rear end of the motor body, and a mounting assembly is provided between the shell, the front end cover and the rear end cover;

[0008] A reinforcement layer is arranged on the inner side of the casing, and the reinforcement layer is sleeved on the outer side of the motor body. A decompression component is arranged between the casing and the reinforcement layer.

[0009] As an optional solution of a driving motor device for an electric vehicle described in the present invention, the decompression assembly includes a fixing ring installed on the reinforcement layer, a first positioning block is installed on the fixing ring, a second positioning block corresponding to the first positioning block is installed in the shell, and a decompression rod is movably hinged between the first positioning block and the second positioning block.

[0010] As an optional solution of the driving motor device for an electric vehicle described in the present invention, wherein: the first positioning block, the second positioning block and the decompression rod are each provided in pairs, and the two first positioning blocks, the second positioning blocks and the decompression rod are symmetrically arranged.

[0011] As an optional solution for a driving motor device for an electric vehicle described in the present invention, the decompression rod is configured as a telescopic rod, a decompression spring is disposed on the outer sleeve of the decompression rod, one end of the decompression spring contacts the outer side of the fixing ring, and the other end of the decompression spring contacts the inner wall of the shell.

[0012] As an optional solution of a driving motor device for an electric vehicle described in the present invention, a clamping block is installed on the inner wall of the fixing ring, a clamping groove corresponding to the clamping block is opened on the outside of the reinforcement layer, the clamping block is engaged with the clamping groove, a first oblique block and a second oblique block are arranged in the clamping groove, the first oblique block and the second oblique block are symmetrically arranged, the first oblique block and the second oblique block are both arranged as rubber blocks, and the first oblique block and the second oblique block are interference fit with the clamping block.

[0013] As an optional solution of a driving motor device for an electric vehicle described in the present invention, a support rod is installed between the reinforcement layer and the body shell, a support spring is provided on the outer sleeve of the support rod, and the support spring and the support rod are located on the side of the pressure relief rod.

[0014] As an optional solution of a driving motor device for an electric vehicle described in the present invention, the mounting assembly includes a mounting rod mounted on the end of the shell, a clip is installed on the end of the mounting rod, a mounting groove corresponding to the clip is opened on the front end cover, and the clip is clamped on the outer side of the front end cover through the mounting groove.

[0015] As an optional solution of a driving motor device for an electric vehicle described in the present invention, a damping ball is installed in the mounting groove, the damping ball is configured to be hemispherical, and the damping ball is configured to be a rubber ball. When the buckle is connected to the outside of the front end cover through the mounting groove, the mounting rod is inserted into the mounting groove, and the mounting rod and the damping ball are interference fit.

[0016] As an optional solution of a driving motor device for an electric vehicle described in the present invention, wherein: a cooling layer is installed outside the casing, a cooling pipe for the flow of coolant is arranged inside the cooling layer, a liquid inlet and a liquid outlet are opened outside the cooling layer, the liquid inlet is connected to the liquid outlet, one end of the cooling pipe is inserted into the liquid inlet, and the other end of the cooling pipe is inserted into the liquid outlet.

[0017] As an optional solution of a driving motor device for an electric vehicle described in the present invention, the cooling layer is outer-coated with an insulating layer, a plurality of heat dissipation holes are opened on the insulating layer, and sealing rings are arranged in the liquid outlet and the liquid inlet, and the sealing rings are arranged as rubber rings.

[0018] The present invention has the following beneficial effects:

[0019] 1. The drive motor device for electric vehicles, through the design of the reinforcement layer and the decompression component, can disperse the pressure between the housing and the motor body of the drive motor device when it is subjected to external pressure, significantly improving the overall pressure resistance, effectively preventing the housing from deformation during long-term use, and extending the service life of the components. At the same time, the decompression rod and the decompression spring in the decompression component can effectively absorb and alleviate the impact and vibration from the road through the expansion and contraction and compression actions. The buffering performance is further enhanced through the design of the support rod and the support spring, thereby providing a smoother driving experience and reducing the impact of noise and vibration on passengers.

[0020] 2. The drive motor device for electric vehicles, through the design of mounting rods and buckles, makes the connection mode more diversified and stable, can effectively resist long-term vibration or impact, and reduces the risk of falling off or loosening. The buckle is convenient and quick through the mounting groove, which is easy to assemble and disassemble, reducing the time and complexity required for installation, and improving the efficiency of production and maintenance. At the same time, due to the more stable and effective connection between components, it can better cope with material fatigue caused by long-term use or environmental changes, thereby reducing the risk of structural damage.

[0021] 3. The driving motor device for electric vehicles can effectively discharge the heat generated during the operation of the motor in a timely manner by setting a cooling layer and a coolant, thereby preventing the motor from overheating, keeping it within the optimal operating temperature range, and improving the efficiency and stability of the motor. By setting a cooling pipe inside the cooling layer, a flow channel is provided for the coolant, and the heat generated by the motor is taken away by the flowing coolant. When the cooling liquid flows through the cooling pipe, the temperature of the motor and the surrounding environment can be effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1It is a schematic diagram of the main three-dimensional structure of the present invention.

[0023] Figure 2 It is a schematic diagram of the main body cutaway structure of the present invention.

[0024] Figure 3 For the present invention Figure 2 A in the figure is an enlarged structural diagram.

[0025] Figure 4 For the present invention Figure 2 The enlarged structural diagram at B in FIG.

[0026] Figure 5 For the present invention Figure 2 The enlarged structural diagram at C in the figure.

[0027] In the figure: 110, casing; 111, motor body; 112, wiring port; 113, housing; 114, front cover; 115, rear cover; 116, reinforcement layer; 120, pressure relief assembly; 121, fixing ring; 122, first positioning block; 123, second positioning block; 124, pressure relief rod; 125, pressure relief spring; 126, clamping block; 127, clamping groove; 128, first inclined block; 129, second inclined block; 130, support rod; 131, support spring; 140, mounting assembly; 141, mounting rod; 142, buckle; 143, mounting groove; 144, damping ball; 150, cooling layer; 151, cooling pipe; 152, liquid inlet; 153, liquid outlet; 154, insulating layer; 155, heat dissipation hole; 156, sealing ring. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Embodiment 1: This embodiment is intended to promote the solution of the problem that most existing electric vehicle drive motors usually use lighter materials to make the drive motor housing in order to reduce their own weight, which may lead to insufficient pressure resistance of the drive motor housing, and thus may cause the housing to deform after long-term use. Figure 1-Figure 5 A driving motor device for an electric vehicle includes a housing 110 , a motor body 111 and a wiring port 112 , wherein the motor body 111 is installed inside the housing 110 , and the wiring port 112 is installed outside the housing 110 .

[0030] The housing 110 includes a housing 113, a front cover 114 and a rear cover 115. The housing 113 is sleeved outside the motor body 111. The front cover 114 is installed at one end of the housing 113, and the rear cover 115 is installed at the other end of the housing 113. The front cover 114 is located at the front end of the motor body 111, and the rear cover 115 is located at the rear end of the motor body 111. An installation component 140 is provided between the housing 113, the front cover 114 and the rear cover 115. A reinforcement layer 116 is provided inside the housing 110, and the reinforcement layer 116 is sleeved outside the motor body 111. A decompression component 120 is provided between the housing 110 and the reinforcement layer 116.

[0031] The decompression assembly 120 includes a fixing ring 121 installed on the reinforcement layer 116, a first positioning block 122 is installed on the fixing ring 121, a second positioning block 123 corresponding to the first positioning block 122 is installed in the housing 113, and a decompression rod 124 is movably hinged between the first positioning block 122 and the second positioning block 123. The first positioning block 122, the second positioning block 123 and the decompression rod 124 are each provided in two, and the two first positioning blocks 122, the second positioning blocks 123 and the decompression rod 124 are symmetrically arranged. The decompression rod 124 is provided as a telescopic rod, and a decompression spring 125 is provided on the outer sleeve of the decompression rod 124, and one end of the decompression spring 125 contacts the outer side of the fixing ring 121, and the other end of the decompression spring 125 contacts the inner wall of the housing 113.

[0032] A block 126 is installed on the inner wall of the fixing ring 121, and a slot 127 corresponding to the block 126 is provided on the outer side of the reinforcement layer 116. The block 126 is engaged with the slot 127, and a first inclined block 128 and a second inclined block 129 are arranged in the slot 127. The first inclined block 128 and the second inclined block 129 are symmetrically arranged, and the first inclined block 128 and the second inclined block 129 are both arranged as rubber blocks. The first inclined block 128 and the second inclined block 129 are interference fit with the block 126. A support rod 130 is installed between the reinforcement layer 116 and the body shell, and a support spring 131 is arranged on the outer sleeve of the support rod 130. The support spring 131 and the support rod 130 are located on the side of the pressure relief rod 124.

[0033] When there is no external pressure on the driving motor device, all components are in a normal static state. The decompression rod 124 is in a natural state, and the spring is not compressed. When the electric vehicle is driving on an uneven road or encounters bumps, the housing 110 is subjected to external pressure and impact, which first affects the shell 113 and the reinforcement layer 116.

[0034] The external pressure acts on the reinforcement layer 116, causing the displacement of the fixing ring 121 and the first positioning block 122, and the pressure relief rod 124 between the first positioning block 122 and the second positioning block 123 also moves accordingly. The pressure relief rod is extended and retracted according to the pressure change, allowing movement beyond the rated range to adjust the pressure. The pressure relief spring 125 is compressed and helps return to the initial state through the elastic restoring force, forming a stable support even when the external pressure continues.

[0035] The block 126 and the first inclined block 128 and the second inclined block 129 form a stable locking state through interference fit, effectively absorbing vibration. At the same time, the support spring 131 and the support rod 130 convert the vibration energy into elastic deformation, thereby reducing the total pressure transmitted to the motor body 111. When the external pressure disappears, the support spring 131, the decompression spring 125 and the decompression rod 124 will return to their original positions, ensuring that the driving motor of the electric vehicle can continue to work in a stable state.

[0036] In this embodiment: through the design of the reinforcement layer 116 and the decompression assembly 120, when the driving motor device is subjected to external pressure, the pressure between the casing 110 and the motor body 111 can be dispersed, which significantly improves the overall pressure resistance and can effectively prevent the casing 110 from deformation during long-term use, thereby extending the service life of the components. At the same time, the decompression rod 124 and the decompression spring 125 in the decompression assembly 120 can effectively absorb and alleviate the impact and vibration from the road through the telescopic and compressed actions. The design of the support rod 130 and the support spring 131 further enhances the buffering performance, thereby providing a smoother driving experience and reducing the impact of noise and vibration on passengers.

[0037] Embodiment 2: This embodiment is intended to promote the solution of the problem that the mounting assembly 140 between the housing 110, the front cover 114 and the rear cover 115 only relies on physical clamping or welding, and the connection between the components may not be strong enough due to long-term vibration or impact. This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 1-Figure 5 .

[0038] The mounting assembly 140 includes a mounting rod 141 mounted on the end of the shell 113, a buckle 142 is mounted on the end of the mounting rod 141, a mounting groove 143 corresponding to the buckle 142 is opened on the front cover 114, and the buckle 142 is clamped on the outer side of the front cover 114 through the mounting groove 143.

[0039] A damping ball 144 is installed in the mounting groove 143. The damping ball 144 is set to be a hemispherical shape, and the damping ball 144 is set to be a rubber ball. When the buckle 142 is connected to the outside of the front cover 114 through the mounting groove 143, the mounting rod 141 is inserted into the mounting groove 143, and the mounting rod 141 and the damping ball 144 are interference fit. The rubber damping ball 144 in the mounting groove 143 can absorb part of the impact and vibration, thereby reducing the vibration transmitted to the motor body 111, which not only protects the motor, but also improves the comfort of the whole vehicle. The good elasticity of the rubber material enables it to maintain an effective buffering effect under dynamic loads.

[0040] This connection method is more diverse and stable, can effectively resist long-term vibration or impact, and reduces the risk of falling off or loosening. At the same time, when it is necessary to separate the motor body 111 from the housing 110, it is only necessary to press the buckle 142 from the outside to the inside so that the mounting rod 141 squeezes the damping ball 144 to expand the mounting groove 143. At this time, the front end cover 114 can be pulled out to disassemble the outer shell, thereby taking out the motor body 111 for maintenance.

[0041] In this embodiment: through the design of the mounting rod 141 and the buckle 142, the connection method is made more diversified and stable, which can effectively resist long-term vibration or impact and reduce the risk of falling off or loosening. The buckle 142 is convenient and quick through the mounting groove 143, which is easy to assemble and disassemble, reduces the time and complexity required for installation, and improves the efficiency of production and maintenance. At the same time, due to the more stable and effective connection between the components, it can better cope with material fatigue caused by long-term use or environmental changes, thereby reducing the risk of structural damage.

[0042] Embodiment 3: This embodiment is intended to promote the solution of the problem that the drive motor generates a lot of heat after long-term use, and the drive motor is set inside the car and cannot discharge the heat in time. This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 1-Figure 5 A cooling layer 150 is installed outside the housing 110, and a cooling pipe 151 for the flow of coolant is arranged inside the cooling layer 150. A liquid inlet 152 and a liquid outlet 153 are opened outside the cooling layer 150, and the liquid inlet 152 is connected to the liquid outlet 153. One end of the cooling pipe 151 is plugged into the liquid inlet 152, and the other end of the cooling pipe 151 is plugged into the liquid outlet 153. By arranging the cooling pipe 151 inside the cooling layer 150, a flow channel is provided for the coolant, and the heat generated by the motor is taken away by the flowing coolant. When the cooling liquid flows through the cooling pipe 151, the temperature of the motor and the surrounding environment can be effectively reduced.

[0043] The cooling layer 150 is provided with an insulating layer 154 on the outer cover, and a plurality of heat dissipation holes 155 are provided on the insulating layer 154, which are wrapped around the outside of the cooling layer 150 to further prevent heat exchange between the inside and the outside and reduce heat loss. By providing a plurality of heat dissipation holes 155 on the insulating layer 154, heat can be effectively dissipated when necessary, while achieving a good insulation effect. A sealing ring 156 is provided inside the liquid outlet 153 and the liquid inlet 152, and the sealing ring 156 is configured as a rubber ring. A sealing ring 156 made of rubber is provided inside the liquid inlet 152 and the liquid outlet 153 to ensure that the coolant does not leak during the flow process, to ensure the sealing and efficiency of the system, and to enable the cooling system to operate stably.

[0044] In this embodiment: by setting the cooling layer 150 and the coolant, the heat generated during the operation of the motor can be effectively discharged in time, thereby preventing the motor from overheating, keeping it within the optimal operating temperature range, and improving the efficiency and stability of the motor. By setting the cooling tube 151 inside the cooling layer 150, a flow channel is provided for the coolant, and the heat generated by the motor is taken away by the flowing coolant. When the cooling liquid flows through the cooling tube 151, the temperature of the motor and the surrounding environment can be effectively reduced.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0046] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A driving motor device for an electric vehicle, comprising a housing (110), a motor body (111) and a connection port (112), characterized in that: The motor body (111) is installed in the housing (110), and the wiring port (112) is installed outside the housing (110); The housing (110) comprises a shell (113), a front end cover (114) and a rear end cover (115); the shell (113) is sleeved outside the motor body (111); the front end cover (114) is mounted on one end of the shell (113); the rear end cover (115) is mounted on the other end of the shell (113); the front end cover (114) is located at the front end of the motor body (111); the rear end cover (115) is located at the rear end of the motor body (111); and a mounting assembly (140) is provided between the shell (113), the front end cover (114) and the rear end cover (115); A reinforcement layer (116) is provided on the inner side of the housing (110), the reinforcement layer (116) is sleeved on the outer side of the motor body (111), and a decompression component (120) is provided between the housing (110) and the reinforcement layer (116).

2. The driving motor device for an electric vehicle according to claim 1, characterized in that: The decompression assembly (120) comprises a fixing ring (121) mounted on the reinforcement layer (116), a first positioning block (122) being mounted on the fixing ring (121), a second positioning block (123) corresponding to the first positioning block (122) being mounted in the shell (113), and a decompression rod (124) being movably hinged between the first positioning block (122) and the second positioning block (123).

3. A driving motor device for an electric vehicle according to claim 2, characterized in that: The first positioning block (122), the second positioning block (123) and the decompression rod (124) are each provided in pairs, and the two first positioning blocks (122), the second positioning block (123) and the decompression rod (124) are symmetrically arranged.

4. The driving motor device for an electric vehicle according to claim 2, characterized in that: The decompression rod (124) is configured as a telescopic rod, and a decompression spring (125) is disposed on the outer sleeve of the decompression rod (124). One end of the decompression spring (125) contacts the outer side of the fixing ring (121), and the other end of the decompression spring (125) contacts the inner wall of the housing (113).

5. The driving motor device for an electric vehicle according to claim 2, characterized in that: A clamping block (126) is installed on the inner wall of the fixing ring (121); a clamping groove (127) corresponding to the clamping block (126) is provided on the outside of the reinforcement layer (116); the clamping block (126) is engaged with the clamping groove (127); a first inclined block (128) and a second inclined block (129) are arranged in the clamping groove (127); the first inclined block (128) and the second inclined block (129) are symmetrically arranged; the first inclined block (128) and the second inclined block (129) are both arranged as rubber blocks; the first inclined block (128) and the second inclined block (129) are interference fit with the clamping block (126).

6. The driving motor device for an electric vehicle according to claim 2, characterized in that: A support rod (130) is installed between the reinforcement layer (116) and the body shell, and a support spring (131) is provided on the outer sleeve of the support rod (130). The support spring (131) and the support rod (130) are located on the side of the pressure relief rod (124).

7. The driving motor device for an electric vehicle according to claim 1, characterized in that: The mounting assembly (140) comprises a mounting rod (141) mounted at the end of the housing (113); a buckle (142) is mounted at the end of the mounting rod (141); a mounting groove (143) corresponding to the buckle (142) is provided on the front end cover (114); and the buckle (142) is clamped to the outside of the front end cover (114) through the mounting groove (143).

8. The driving motor device for an electric vehicle according to claim 7, characterized in that: A damping ball (144) is installed in the installation groove (143), and the damping ball (144) is set to be hemispherical and a rubber ball. When the buckle (142) is connected to the outside of the front end cover (114) through the installation groove (143), the installation rod (141) is inserted into the installation groove (143), and the installation rod (141) and the damping ball (144) are interference fit.

9. The driving motor device for an electric vehicle according to claim 1, characterized in that: A cooling layer (150) is installed outside the casing (110), a cooling tube (151) for the flow of cooling liquid is arranged inside the cooling layer (150), a liquid inlet (152) and a liquid outlet (153) are opened outside the cooling layer (150), the liquid inlet (152) is connected to the liquid outlet (153), one end of the cooling tube (151) is inserted into the liquid inlet (152), and the other end of the cooling tube (151) is inserted into the liquid outlet (153).

10. A driving motor device for an electric vehicle according to claim 9, characterized in that: The cooling layer (150) is provided with an insulating layer (154) on its outer shell, and a plurality of heat dissipation holes (155) are provided on the insulating layer (154). The liquid outlet (153) and the liquid inlet (152) are both provided with sealing rings (156), and the sealing rings (156) are configured as rubber rings.

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