Electric drive system and vehicle

Abstract

The utility model provides an electric drive system and a vehicle. The electric drive system comprises an electric drive assembly, a controller assembly and a PTC assembly. The electric drive assembly comprises a shell, a motor assembly and a speed reducer assembly, wherein the motor assembly and the speed reducer assembly are integrated in the shell. The controller assembly is arranged on the shell and connected with the motor assembly and the speed reducer assembly so as to control the motor assembly and the speed reducer assembly to work. The PTC assembly is arranged on the shell and connected with the controller assembly, and the controller assembly further controls the PTC assembly to work. The electric drive system provided by the utility model can reduce the cost.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to an electric drive system and vehicle. Background Technology

[0002] To enhance vehicle competitiveness, automakers are improving or reducing costs in various ways. For example, existing vehicle electric drive systems have low integration; when the system is independent, additional electronic components such as wiring harnesses and interface circuits are required, leading to higher vehicle costs. Utility Model Content

[0003] This application provides an electric drive system and vehicle that can reduce vehicle costs.

[0004] To solve the above-mentioned technical problems, one technical solution adopted in this application is: to provide an electric drive system, which includes an electric drive assembly, a controller assembly, and a PTC assembly. The electric drive assembly includes a housing and a motor assembly and a reducer assembly integrated in the housing. The controller assembly is disposed on the housing and connected to the motor assembly and the reducer assembly to control the operation of the motor assembly and the reducer assembly. The PTC assembly is disposed on the housing and connected to the controller assembly, and the controller assembly also controls the operation of the PTC assembly.

[0005] In one embodiment, the axial direction of the output shaft of the motor assembly is perpendicular to the arrangement direction of the motor assembly and the reducer assembly. The controller assembly is located on the same side of the motor assembly and the reducer assembly, and the PTC is located on the side of the motor assembly away from the reducer assembly or the side of the reducer assembly away from the motor assembly.

[0006] In one embodiment, the controller assembly includes an integrated main control circuit, a PTC drive circuit, and a motor drive circuit. The PTC drive circuit is connected to both the main control circuit and the PTC assembly. The motor drive circuit is connected to both the main control circuit and the electric drive assembly.

[0007] In one embodiment, the controller assembly further includes a high-voltage filter component, which is connected to the PTC drive circuit and the motor drive circuit respectively, and is configured to receive a high-voltage electrical signal.

[0008] In one embodiment, the controller assembly further includes a thin-film capacitor connected to both the PTC drive circuit and the motor drive circuit, and configured to receive a power supply signal.

[0009] In one embodiment, the controller assembly further includes a power management circuit, which is connected to the main control circuit, the PTC drive circuit, and the motor drive circuit.

[0010] In one embodiment, the controller assembly further includes a bus connected to the main control circuit and configured to access the vehicle’s central controller for communication of PTC signals and electric drive signals.

[0011] In one embodiment, the controller assembly further includes a motor sensor connected to the main control circuit.

[0012] In one embodiment, the controller assembly further includes a PTC sensor connected to the main control circuit.

[0013] To solve the above-mentioned technical problems, another technical solution adopted in this application is to provide a vehicle that includes the above-mentioned electric drive system.

[0014] The beneficial effects of this application are as follows: The electric drive system of this application includes an electric drive assembly, a controller assembly, and a PTC assembly. The electric drive assembly includes a housing and a motor assembly and a reducer assembly integrated into the housing. The controller assembly is located on the housing and connected to the motor assembly and reducer assembly to control their operation. The PTC assembly is located on the housing and connected to the controller assembly, which also controls the operation of the PTC assembly. In addition to controlling the operation of the motor assembly and reducer assembly, the controller assembly of this application can also control the operation of the PTC assembly. That is, this application eliminates the traditional control module used for independently controlling the PTC assembly, allowing the motor assembly, reducer assembly, and PTC assembly to share the controller assembly. This reduces the need for control chips and peripheral circuitry in the PTC assembly's control module, thus lowering the cost of the vehicle. Furthermore, the PTC assembly is also located on the housing of the motor assembly and reducer assembly, integrating the PTC assembly with the motor assembly and reducer assembly, reducing its size. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the electric drive system provided in this application;

[0017] Figure 2 yes Figure 1 A circuit diagram of one embodiment of the electric drive system is shown in the example.

[0018] Figure 3 This is a schematic diagram of the structure of an embodiment of the controller assembly provided in this application;

[0019] Figure 4 This is a schematic diagram of the structure of an embodiment of the electric drive system provided in this application;

[0020] Figure 5 This is a schematic diagram of the structure of an embodiment of the controller assembly provided in this application;

[0021] Figure 6 This is a structural schematic diagram of an embodiment of the vehicle provided in this application. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0023] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0024] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0025] This application provides an electric drive system for vehicles, see reference. Figure 1 , Figure 1 This is a schematic diagram of an embodiment of the electric drive system provided in this application. Figure 2 yes Figure 1 A circuit diagram of one embodiment of the electric drive system is shown in the example. Figure 3 This is a schematic diagram of a controller assembly according to an embodiment of the present application. The electric drive system 10 includes an electric drive assembly 120, a controller assembly 110, and a PTC assembly 130.

[0026] The electric drive assembly 120 includes a housing (not shown in the figure) and a motor assembly 121 and a reducer assembly 122 integrated within the housing. The motor assembly 121 is used to convert electrical energy into mechanical energy to drive the vehicle. The reducer assembly 122 is used to convert the high-speed, low-torque output of the motor into the low-speed, high-torque output required by the wheels.

[0027] The controller assembly 110 is mounted on the housing and connected to the motor assembly 121 and the reducer assembly 122. The controller assembly 110 can control the operation of the motor assembly 121 and the reducer assembly 122. According to the driving needs of the vehicle, such as acceleration, deceleration, and constant speed driving, the controller assembly 110 responds to the power demand by precisely adjusting the speed of the motor assembly 121 and the torque of the reducer assembly 122.

[0028] The PTC assembly 130 is mounted on the housing and connected to the controller assembly 110, which also controls the operation of the PTC assembly 130. The PTC assembly 130 is used to regulate the temperature of the vehicle's battery pack and interior space, ensuring the battery pack operates within a suitable temperature range, improving battery performance and lifespan, and providing a comfortable environment for vehicle occupants. For example, during the use of new energy vehicles, based on customer heating and cooling needs, the controller assembly 110 dynamically adjusts the heating power of the PTC assembly 130 according to the ambient temperature and interior temperature of the vehicle, achieving different power outputs. The PTC assembly 130 can be externally mounted to the housing via bolts.

[0029] The controller assembly 110 of this application can control the operation of the motor assembly 121 and the reducer assembly 122, as well as the PTC assembly 130. This means that the traditional control module for independently controlling the PTC assembly 130 is eliminated, allowing the motor assembly 121 and reducer assembly 122 to share the controller assembly 110 with the PTC assembly 130. This reduces the need for a control chip and the peripheral circuitry required to maintain the normal operation of the PTC assembly 130's control module, thereby lowering the cost of the electric drive system 10 provided by this application. Furthermore, the PTC assembly 130 is integrated into the housing of the motor assembly 121 and reducer assembly 122, further reducing its size.

[0030] In one embodiment, the axial direction of the output shaft of the motor assembly 121 is perpendicular to the arrangement direction of the motor assembly 121 and the reducer assembly 122. The controller assembly 110 is located on the same side of the motor assembly 121 and the reducer assembly 122. The PTC is located on the side of the motor assembly 121 away from the reducer assembly 122 or on the side of the reducer assembly 122 away from the motor assembly 121. The PTC assembly 130 is located on the side of the motor assembly 121 away from the reducer assembly 122 or on the side of the reducer assembly 122 away from the motor assembly 121. Compared to being located on both sides along the axial direction, the PTC assembly 130 does not obstruct the connection of the output shaft of the motor assembly 121 to other components, allowing the motor assembly 121 to operate normally and reducing the size caused by the direction from the motor assembly 121 to the controller.

[0031] In one embodiment, see Figure 2 , Figure 2 This is a schematic diagram of an embodiment of the controller assembly 110 provided in this application. The controller assembly 110 includes an integrated main control circuit 111, a PTC drive circuit 112, and a motor drive circuit 113. The integrated components can be located on the same circuit board or be functional circuits configured using a control chip module; this is not limited. The PTC drive circuit 112 is connected to both the main control circuit 111 and the PTC assembly 110. The main control circuit 111 controls the operation of the PTC drive circuit 112 to control the PTC assembly 130. The motor drive circuit 113 is connected to both the main control circuit 111 and the electric drive assembly 120. The main control circuit 111 controls the operation of the electric drive assembly 120 by controlling the motor drive circuit 113. In this embodiment, the main control circuit 111 can control the PTC assembly 130 and the motor assembly 121 by controlling the PTC drive circuit 112 and the motor drive circuit 113 respectively, and control the reducer assembly 122 to work. That is, the PTC assembly 130 and the motor assembly 121 share the main control circuit 111, which can reduce the need for additional main control circuit 111 of the PTC assembly 130 and peripheral circuits to maintain the normal operation of the main control circuit 111, thereby reducing costs.

[0032] In one embodiment, the controller assembly 110 further includes a high-voltage filter component (not shown in the figure). The high-voltage filter component is connected to the PTC drive circuit 112 and the motor drive circuit 113 respectively, and is configured to receive a high-voltage electrical signal. The high-voltage filter component may include an inductor group and a capacitor group, which together constitute a filter circuit. The high-voltage filter component may also be combined with connectors to form a power supply port for receiving the high-voltage signal; the specific structure of the high-voltage filter component is not limited here. The high-voltage electrical signal can be an AC signal or a DC signal, without limitation. Understandably, the high-voltage electrical signal passes through the high-voltage filter component before being input to the PTC drive circuit 112 and the motor drive circuit 113. The high-voltage filter component can reduce the interference of interference signals in the high-voltage electrical signal on the PTC drive circuit 112 and the motor drive circuit 113, thereby improving the anti-interference capability of the controller assembly 110. Furthermore, since the PTC drive circuit 112 and the motor drive circuit 113 are integrated, the controller assembly 110 only needs to be equipped with one high-voltage filter component. That is, the PTC drive circuit 112 and the motor drive circuit 113 share one high-voltage filter component, which can reduce costs.

[0033] In one embodiment, the controller assembly 110 further includes a thin-film capacitor 114, which is connected to both the PTC drive circuit 112 and the motor drive circuit 113, and is configured to receive a power supply signal. The power supply signal can be a DC signal. Understandably, the power supply signal passes through the thin-film capacitor 114 before supplying power to the PTC drive circuit 112 and the motor drive circuit 113. The thin-film capacitor 114 can reduce interference signals in the power supply signal, thereby improving the anti-interference capability of the controller assembly 110. Furthermore, since the PTC drive circuit 112 and the motor drive circuit 113 are integrated, the controller assembly 110 only needs one thin-film capacitor 114, meaning the PTC drive circuit 112 and the motor drive circuit 113 share one thin-film capacitor 114, which reduces costs. In addition, the thin-film capacitor 114 can also achieve functions such as energy storage, current stabilization, improved circuit efficiency, and extended battery life.

[0034] In one embodiment, the controller assembly 110 further includes a power management circuit (not shown in the figure), which is connected to the main control circuit 111, the PTC drive circuit 112, and the motor drive circuit 113. The power management circuit can output power supply signals of different values; it can monitor the power supply signal and switch to a backup power supply signal or stop power supply when the output power supply signal is abnormal, providing stable and safe power supply signals to the main control circuit 111, the PTC drive circuit 112, and the motor drive circuit 113. Specifically, the operation of the power management circuit is similar to that of conventional power management circuits and will not be described in detail here. In this embodiment, the power management circuit can provide power supply signals not only to the main control circuit 111 and the motor drive circuit 113, but also to the PTC drive circuit 112, allowing the PTC drive circuit 112 to share the power management circuit with the motor drive circuit 113 and the main control circuit 111. This reduces the need for additional power management circuits and lowers vehicle costs.

[0035] In one embodiment, the power management circuitry includes a DC / DC module 1151 (see...) Figure 4 ) and OBC module 1152 (see Figure 4 The power management circuit can be a highly integrated power management chip, or it can be a power management circuit composed of a boost circuit, a buck circuit, a feedback circuit, a safety monitoring circuit, etc., without any restrictions.

[0036] In one embodiment, the controller assembly 110 further includes a bus (not shown in the figure), which is connected to the main control circuit 111 and configured to access the vehicle's central controller to achieve communication between the main control circuit 111 and the central controller. Specifically, after receiving a demand command from the PTC assembly 130 or the electric drive assembly 120, the central controller sends the demand command to the main control circuit 111 via the bus. The main control circuit 111 controls the PTC drive circuit 112, the motor drive circuit 113, or the reducer assembly 122 based on the demand command. In this embodiment, after the PTC drive circuit 112, the motor drive circuit 113, and the reducer share the main control circuit 111, the bus between the main control circuit 111 and the central controller can realize the transmission of demand commands or fault feedback of the PTC assembly 130, the motor assembly 121, and the reducer assembly 122, which can reduce the bus setup between the central controller and the PTC assembly 130 and reduce costs.

[0037] In one embodiment, the bus includes a CAN communication bus (not shown) and a CAN bus interface (not shown).

[0038] In other embodiments, the main control circuit also communicates with the motor assembly and the PTC assembly 130 via a bus. Only one CAN bus interface needs to be set on the main control circuit to realize CAN communication between the main control circuit and the motor assembly and the PTC assembly 130, which can reduce costs.

[0039] In one embodiment, the controller assembly 110 further includes a motor sensor (not shown in the figure), which is connected to the main control circuit 111. The motor sensor can be a sensor for collecting temperature data, a sensor for collecting resolver data, a sensor for collecting pressure data, etc., and is not limited thereto. The controller assembly 110 can achieve precise control of the motor drive circuit 113 based on the parameters collected by the motor sensor.

[0040] In one embodiment, the controller assembly 110 further includes a PTC sensor (not shown in the figure), which is connected to the main control circuit 111. The PTC sensor can be a temperature sensor, a humidity sensor, an inlet water sensor, an outlet water sensor, or other similar PTC sensors. The main control circuit 111 uses the parameters acquired by the PTC sensor to achieve precise control of the PTC assembly 130.

[0041] See Figure 4 and Figure 5 , Figure 4 This is a schematic diagram of an embodiment of the electric drive system provided in this application. Figure 5 This is a schematic diagram of the structure of an embodiment of the controller assembly provided in this application. Figure 4 The electric drive system shown is Figure 5The controller assembly system shown can be used in various applications, and is not limited here. The power management circuit includes a DC / DC module 1151 and an OBC module 1152. The OBC module 1152 converts the AC power from the AC charging pile into DC power to charge the power battery and supply power to the power modules. The DC / DC module 1151 can charge the battery (not shown in the figure) based on DC power. The stored battery can then supply power to the controller assembly 110, etc., through the DC / DC module. For example, the DC / DC module provides low-voltage DC power and high-voltage DC power to the PTC drive circuit 112 and the motor drive circuit 113, and provides high-voltage power to the PTC assembly 130 and the motor assembly 121, etc. The main control board is equipped with a main control circuit 111 and peripheral circuits to maintain its normal operation, as well as communication circuits such as a CAN transceiver; the PTC drive board is equipped with a PTC drive circuit 112 and peripheral circuits to maintain its normal operation; the motor drive board is equipped with a motor drive circuit 113 and peripheral circuits to maintain its normal operation. DC power is supplied to the PTC driver board, motor driver board, and main control board after passing through the film capacitor 114. The main control circuit 111 can control the PTC driver circuit 112 and motor driver circuit 113 through PWM signals. The heat-generating parts of the PTC assembly 130 are connected by bolts and externally mounted to the housing.

[0042] This application provides a vehicle, see reference. Figure 6 , Figure 6 This is a structural schematic diagram of an embodiment of the vehicle provided in this application, as shown below. Figure 6 As shown, the vehicle 20 includes an electric drive system (not shown), wherein the electric drive system is any one of the electric drive systems described in the above embodiments, and will not be elaborated here. It is worth noting that the technical effects that the electric drive system can achieve can also be achieved in the vehicle.

[0043] The above are merely embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. An electric drive system, characterized in that, include: An electric drive assembly, including a housing and a motor assembly and a reducer assembly integrated within the housing; A controller assembly is disposed on the housing and connected to the motor assembly and the reducer assembly to control the operation of the motor assembly and the reducer assembly; The PTC assembly is located on the housing and connected to the controller assembly, which also controls the operation of the PTC assembly.

2. The electric drive system according to claim 1, characterized in that, The axial direction of the output shaft of the motor assembly is perpendicular to the arrangement direction of the motor assembly and the reducer assembly. The controller assembly is located on the same side of the motor assembly and the reducer assembly. The PTC is located on the side of the motor assembly away from the reducer assembly or the side of the reducer assembly away from the motor assembly.

3. The electric drive system according to claim 1, characterized in that, The controller assembly includes an integrated configuration: Main control circuit; The PTC drive circuit is connected to the main control circuit and the PTC assembly, respectively. The motor drive circuit is connected to both the main control circuit and the electric drive assembly.

4. The electric drive system according to claim 3, characterized in that, The controller assembly also includes: The high-voltage filter component is connected to the PTC drive circuit and the motor drive circuit respectively, and is configured to receive a high-voltage electrical signal.

5. The electric drive system according to claim 3, characterized in that, The controller assembly also includes: Thin-film capacitors are connected to the PTC drive circuit and the motor drive circuit respectively, and are configured to receive power supply signals.

6. The electric drive system according to claim 3, characterized in that, The controller assembly also includes: The power management circuit is connected to the main control circuit, the PTC drive circuit, and the motor drive circuit, respectively.

7. The electric drive system according to claim 3, characterized in that, The controller assembly also includes: The bus is connected to the main control circuit and configured to access the vehicle's central controller for communication of PTC signals and electric drive signals.

8. The electric drive system according to claim 3, characterized in that, The controller assembly also includes: The motor sensor is connected to the main control circuit.

9. The electric drive system according to claim 3, characterized in that, The controller assembly also includes: The PTC sensor is connected to the main control circuit.

10. A vehicle, characterized in that, include: The electric drive system according to any one of claims 1-9.

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