Electric drive control systems and electric vehicles

Abstract

We provide electric drive control systems and electric vehicles. [Solution] The electric drive control system includes a power component and an integrated control module that integrates a battery management unit, a vehicle control unit, and a power component control unit onto a single chip. The vehicle control unit is connected to the battery management unit and the power component control unit. The battery management unit is communicated to the battery component of the electric vehicle. The power component control unit is electrically connected to the power component. The power component is electrically connected to the motor of the electric vehicle. By using the above method, communication lines can be simplified and costs can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vehicle technology, and in particular to an electric drive control system and an electric vehicle. BACKGROUND ART

[0002] The power electronics design of electric vehicles plays a very important role in the efficiency and performance of electric vehicles. At present, more and more electric vehicles adopt the centralized computing architecture of EEA (Electrical / Electronic Architecture), which integrates several controllers to reduce costs.

[0003] At present, conventional electric vehicles generally adopt physical-level control integration, and each ECU (Electronic Control Unit) uses a separate controller (MCU). The communication between multiple controllers leads to complicated communication lines and high costs. SUMMARY OF THE INVENTION PROBLEMS TO BE SOLVED BY THE INVENTION

[0004] The present application provides an electric drive control system and an electric vehicle for solving the above technical problems in the prior art. MEANS FOR SOLVING THE PROBLEMS

[0005] According to a first aspect of the present application, an electric drive control system is provided, the electric drive control system includes a power component, and an integrated control module that integrates a battery management unit, a vehicle control unit, and a control unit for the power component on a single chip, The vehicle control unit is connected to the battery management unit and the power component control unit, the battery management unit is communicated to the battery component of the electric vehicle, the power component control unit is electrically connected to the power component, and the power component is electrically connected to the motor of the electric vehicle.

[0006] In some embodiments, the power component includes an inverter, and the control unit of the power component includes an inverter control unit. The inverter control unit is electrically connected to the inverter, and the inverter is connected to the motor of the electric vehicle.

[0007] In some embodiments, the power component further includes a DC-DC converter, and the control unit of the power component includes a DC-DC converter control unit. The DC-DC converter control unit is electrically connected to the DC-DC converter, and the DC-DC converter is connected to the low-voltage components of the electric vehicle.

[0008] In some embodiments, the electric drive control system further includes an on-board charger component, which is communicated to the vehicle control unit.

[0009] In some embodiments, the electric drive control system further includes a first CAN communication line, and the on-board charger component is communicated to the vehicle control unit via the first CAN communication line.

[0010] In some embodiments, the electric drive control system further includes a second CAN communication line, and the battery management unit is communicated to the battery components of the electric vehicle via the second CAN communication line.

[0011] In some embodiments, the electric drive control system further includes a third CAN communication line, and the vehicle control unit is connected to the central control system of the electric vehicle via the third communication line.

[0012] In some embodiments, the electric drive control system further includes a fourth CAN communication line. The vehicle control unit is connected to the DC charging socket of the electric vehicle via a fourth CAN communication line.

[0013] In some embodiments, the integrated control module is an MCU chip.

[0014] According to a second aspect of this application, an electric vehicle including the above-mentioned electric drive control system is provided. [Effects of the Invention]

[0015] In summary, the electric drive control system and electric vehicle described in this application have at least the following beneficial effects.

[0016] By using an integrated control module that combines a battery management unit, a vehicle control unit, and a power component control unit, various functions can be integrated onto a single chip. Compared to conventional systems where each function corresponds to a separate control chip, this simplifies communication lines and reduces the number of chips used, thereby lowering costs by eliminating communication between the original separate control chips. [Brief explanation of the drawing]

[0017] To more clearly describe the modes for carrying out the invention of this application or the prior art, the following briefly introduces the drawings that may be used in the description of the modes for carrying out the invention or the prior art, linking them together. Clearly, the drawings in the following description are some embodiments of this application, and a person skilled in the art could obtain other drawings or solutions based on these drawings without expending any creative effort. [Figure 1] This is a structural block diagram of an electric drive control system in one embodiment of this application. [Figure 2] This is a topology diagram of an electrically driven control system in one embodiment of this application. [Figure 3] This is a topology diagram of a conventional electronic drive control system. [Modes for carrying out the invention]

[0018] In the description of this application, it should be understood that, for example, when descriptions indicating orientation or positional relationships such as "center," "vertical direction," "horizontal direction," "length," "width," "thickness," "top," "bottom," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," "clockwise," "counterclockwise," "axial direction," "radial direction," and "circumferential direction" appear, unless otherwise specifically explained, the orientation or positional relationships shown based on the drawings are merely for the convenience and simplification of the description in this application, and do not indicate or imply that the mentioned device or element has a specific orientation or must be configured and operated in a specific orientation. Therefore, they should not be understood as limitations on this application.

[0019] Furthermore, if features are limited to "first" or "second" for descriptive purposes only, they cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features being referred to. Features limited to "first" or "second" may explicitly or implicitly include at least one of these limited features. When a description of "plural" appears, it generally means including at least two, for example, two, three, etc., unless it is particularly clear and specifically limited.

[0020] In the present application, unless otherwise clearly specified and limited, when terms such as "mount", "couple", "connect", and "fix" appear, they should be understood in a broad sense. For example, the connection may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection, an indirect connection via an intermediate medium, or communication inside two elements or an interaction relationship between two elements. A person of ordinary skill in the art can understand the specific meaning of the above terms in the present application according to specific situations.

[0021] In the description of the present specification, when terms such as "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" appear, it is meant that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in an appropriate manner. Where there is no inconsistency, a person of ordinary skill in the art may combine and assemble different embodiments or examples and features of different embodiments or examples described in the present specification.

[0022] In one embodiment of this application, an electric drive control system is provided, and as shown in Figure 1, the electric drive control system 100 includes an integrated control module 110 and a power component 130. The integrated control module 110 is a single control chip, and specifically, the integrated control module 110 integrates a battery management unit, a vehicle control unit, and a power component control unit. Here, the battery management unit, the vehicle control unit, and the control unit are functional units within the integrated control module 110 that can realize the corresponding functions. Specifically, the battery management unit is a functional unit corresponding to a BMS (Battery Management Unit) chip and is used to realize the functions of the BMS chip; the vehicle control unit is a functional unit corresponding to a VCU (Vehicle Control Unit) chip and is used to realize the functions of the VCU (Vehicle Control Unit) chip; and the power component control unit is a functional unit for realizing the control functions of the power component. For example, by programming the software programs of each functional unit into the integrated control module 110, the integrated control module 110 can integrate the functions of each functional unit. The functions of multiple functional units are integrated into a single control chip, which is then placed on a single PCBA (Printed Circuit Board Assembly).

[0023] Here, the power component 130 is a component including a power semiconductor device. For example, the power component 130 may include an inverter, and may further include a DC-DC converter or the like. Specifically, the vehicle control unit in the integrated control module 110 is connected to the battery management unit and the control unit of the power component, where the battery management unit is communicatively connected to the battery component 200 of the electric vehicle to communicate with the battery component 200. For example, the battery component 200 may be a high-voltage battery component. The control unit of the power component in the integrated control module 110 is electrically connected to the power component 130 to control the operation of the power component 130. The power component 130 is electrically connected to the motor 300 of the electric vehicle.

[0024] In the prior art, the battery management unit, the vehicle control unit and the control unit of the power component all use independent control chips, which are respectively a BMS chip, a VCU chip and a power component control chip. The BMS chip needs to communicate with the battery component 200 and communicate with the VCU chip. The VCU chip needs to communicate with the power component control chip and communicate with other modules of the electric vehicle, resulting in a large number of complicated communication lines, and the cost of using a plurality of control chips is high.

[0025] In the electric drive control system according to this application, the battery management unit in the integrated control module 110 communicates with the battery component 200, and the power component control unit in the integrated control module 110 is electrically connected to the power component 130. By using the integrated control module 110, which integrates the battery management unit, the vehicle control unit, and the power component control unit, various functions can be integrated onto a single chip. Compared to conventional systems where each function corresponds to a separate control chip, this system simplifies communication lines and reduces the number of chips used, thereby lowering costs by eliminating communication between the original separate control chips.

[0026] Specifically, the integrated control module 110 may be an MCU chip. By integrating various functional units within a single MCU chip and having one MCU chip use one PCBA, multiple functions can be integrated into a single PCBA via a single MCU chip, simplifying communication lines and saving costs.

[0027] In some embodiments, as shown in Figure 2, the power component 130 includes an inverter (PWR Power part in Figure 2), the control unit of the power component 130 includes an inverter control unit (PWR in Figure 2), the inverter control unit in the integrated control module 110 is electrically connected to the inverter, and the inverter is connected to the motor 300 of the electric vehicle.

[0028] Here, the inverter control unit is a functional unit that implements control functions for the inverter. By integrating the inverter control functions into the integrated control module 110, it is not necessary to control the inverter using a separate control chip, which simplifies the communication lines and saves costs.

[0029] Specifically, in Figure 2, VCU represents a vehicle control unit integrated within the integrated control module 110, and BMS represents a battery management unit integrated within the integrated control module 110. As shown in Figure 2, the battery component 200 is a high-voltage battery component and may include a battery pack (CM Ce), peripheral circuits (E-BOX) connected to the battery pack, and a battery monitoring chip (CMU). The battery pack is electrically connected to the inverter via the peripheral circuits and is also used for electrical connections with other devices in the electric vehicle, such as the high-voltage heater (HV-heater AC) of the air conditioning system, the electric air conditioning compressor (EKK), and the battery high-voltage heater (HV-heater Battery). The battery monitoring chip is communicated to the battery management unit in the integrated control module 110.

[0030] In some embodiments, as shown in Figure 2, the power component 130 further includes a DC-DC converter (DC-DC in Figure 2), the power component's control unit includes a DC-DC converter control unit (DC-DC control in Figure 2), the DC-DC converter control unit in the integrated control module 110 is electrically connected to the DC-DC converter, and the DC-DC converter is connected to the low-voltage components of the electric vehicle to provide DC power to the low-voltage components. For example, the low-voltage components may be a 12V battery (12V battery in Figure 2).

[0031] Here, the DC-DC converter control unit is a functional unit that implements control functions for the DC-DC converter. By integrating the functions for controlling the DC-DC converter into the integrated control module 110, it is not necessary to control the DC-DC converter using a separate control chip, which further simplifies the communication line and saves costs.

[0032] In some embodiments, as shown in Figure 2, the electric drive control system further includes an onboard charger component (OBC), which is communicated to a vehicle control unit in an integrated control module 110. Specifically, the OBC includes an onboard charger and an onboard charger control chip, which is connected to the vehicle control unit in the integrated control module 110 via a communication line and is electrically connected to the onboard charger to control its operation, the onboard charger is connected to the AC charger socket of the electric vehicle, the AC charger socket is connected to an external AC charging device, and the onboard charger can convert the input AC to DC and use it to charge the battery pack in the battery component 200.

[0033] Specifically, as shown in Figure 2, the integrated control module 110, inverter, on-board charger component, and DC-DC converter may be installed in a single area, for example, within a single circuit board or electrical framework.

[0034] Furthermore, the electric drive control system further includes a first CAN communication line, for example, (3)-CAN in Figure 2 is the first CAN communication line, and the on-board charger component is connected to the vehicle control unit in the integrated control module 110 via the first CAN communication line.

[0035] The first CAN communication line supports CAN communication and facilitates communication between the integrated control module 110 and the onboard charger component CAN by connecting the onboard charger component and the vehicle control unit of the integrated control module 110 using the first CAN communication line. Specifically, the onboard charger control chip within the onboard charger component is connected to the vehicle control unit of the integrated control module 110 via the first CAN communication line.

[0036] In some embodiments, the electric drive control system further includes a second CAN communication line, for example, (1)-CAN in Figure 2, which is the second CAN communication line, and the battery management unit in the integrated control module 110 is connected to the battery component 200 of the electric vehicle via the second CAN communication line, thereby facilitating CAN communication between the integrated control module 110 and the battery component 200. Specifically, the battery management unit in the integrated control module 110 is connected to the battery monitoring chip (CMU) via the second CAN communication line.

[0037] In some embodiments, the electric drive control system further includes a third CAN communication line, for example, (4)-CAN in Figure 2 is the third CAN communication line. The vehicle control unit in the integrated control module 110 is connected to the central control system of the electric vehicle via the third communication line, thereby facilitating CAN communication between the integrated control module 110 and the central control system. Specifically, the central control system may include a central control chip (CCU) for managing and controlling the vehicle's smart systems, infotainment, etc., and the vehicle control unit in the integrated control module 110 is connected to the central control chip via the third communication line.

[0038] In some embodiments, the electric drive control system further includes a fourth CAN communication line, for example, (2)-CAN in Figure 2 is the fourth CAN communication line. The vehicle control unit in the integrated control module 110 is connected to the DC charging socket of the electric vehicle (DC Charger socket in Figure 2) via the fourth CAN communication line. Here, the DC charging socket is used to connect external DC charging equipment. Connecting the integrated control module 110 and the DC charging socket via the fourth CAN communication line facilitates communication between the integrated control module 110 and the DC charging socket.

[0039] As shown in Figure 3, in conventional electric vehicles, separate BMS chips ((2)-MCU in Figure 3) and VCU chips ((3)-MCU in Figure 3) are used, and the power component 130 also uses a separate control chip. For example, the PWR component in Figure 3 represents an inverter component including an inverter and an inverter control chip ((4)-MCU), and the DCDC component includes a DCDC converter and a DCDC converter control chip ((6)-MCU). The onboard charger uses a separate onboard charger control chip ((5)-MCU), and the battery monitoring chip of the battery management unit uses a single chip ((1)-MCU). On the other hand, in this application, as shown in Figure 2, the functions of the BMS chip, VCU chip, inverter control chip, and DCDC converter control chip are integrated into an integrated control module 110, and by using a single chip, the use of at least three chips can be reduced, resulting in lower costs.

[0040] As shown in Figure 3, in conventional electric vehicles, separate control chips are used, so a communication line is required between the battery monitoring chip (CMU) and the BMS chip, for example, (1)-CAN in Figure 3; between the BMS chip and the VCU chip, for example, (2)-CAN in Figure 3; between the VCU chip and the PWR component, for example, (3)-CAN in Figure 3; between the VCU chip and the central control chip (CCU), for example, (4)-CAN in Figure 3; between the VCU chip and the onboard charger component (OBC), for example, (6)-CAN in Figure 3; between the VCU chip and the DC-DC converter (DCDC) component, for example, (7)-CAN in Figure 3; and between the VCU chip and the DC charging socket, for example, (8)-CAN in Figure 3. On the other hand, in this application, the functions of the BMS chip, VCU chip, inverter control chip, and DCDC converter control chip are integrated into the integrated control module 110. Under the same communication function as in Figure 3, as shown in Figure 2, only the communication line between the battery monitoring chip and the integrated control module 110 ((1)-CAN in Figure 2), the communication line between the integrated control module 110 and the DC charging socket ((2)-CAN in Figure 2), the communication line between the integrated control module 110 and the on-board charger component ((3)-CAN in Figure 2), and the communication line between the integrated control module 110 and the central control chip CCU ((4)-CAN in Figure 2) are required, reducing the number of communication lines by at least three and simplifying the communication circuit.

[0041] This application further provides electric vehicles including the electric drive control systems in each of the above embodiments.

[0042] The technical features described above can be combined in any way. While not all possible combinations of these technical features are described, any combination of these technical features should be considered covered by this specification, provided that such combination does not create a contradiction.

[0043] Finally, it should be noted that the above embodiments are merely illustrative of the technical concept of this application and do not limit it. Although the present application has been described in detail with reference to the embodiments described above, those skilled in the art should understand that it may still modify the technical concept described in the embodiments above, or make equivalent substitutions to some or all of its technical features, but such modifications or substitutions will not cause the essence of the relevant technical concept to deviate from the scope of the technical concept of each embodiment of this application.

Claims

1. It includes an electric drive control system power component, a battery management unit, a vehicle control unit, and an integrated control module that integrates the control unit of the power component onto a single chip, An electric drive control system characterized in that the vehicle control unit is connected to the battery management unit and the power component control unit, the battery management unit is communicated to the battery component of the electric vehicle, the power component control unit is electrically connected to the power component, and the power component is electrically connected to the motor of the electric vehicle.

2. The power component includes an inverter, and the control unit of the power component includes an inverter control unit. The electric drive control system according to claim 1, characterized in that the inverter control unit is electrically connected to the inverter, and the inverter is connected to the motor of the electric vehicle.

3. The power component further includes a DC-DC converter, and the control unit of the power component includes a DC-DC converter control unit. The electric drive control system according to claim 2, wherein the DC-DC converter control unit is electrically connected to the DC-DC converter, and the DC-DC converter is connected to the low-voltage components of an electric vehicle.

4. The electric drive control system according to claim 1, further comprising an on-board charger component, wherein the on-board charger component is communicated to the vehicle control unit.

5. The electric drive control system according to claim 4, further comprising a first CAN communication line, wherein the on-board charger component is communicated to the vehicle control unit via the first CAN communication line.

6. The electric drive control system according to claim 1, further comprising a second CAN communication line, wherein the battery management unit is communicated to the battery components of an electric vehicle via the second CAN communication line.

7. The electric drive control system according to claim 1, further comprising a third CAN communication line, wherein the vehicle control unit is connected to a central control system of an electric vehicle via the third CAN communication line.

8. The electric drive control system further includes a fourth CAN communication line, The electric drive control system according to claim 1, characterized in that the vehicle control unit is connected to the DC charging socket of the electric vehicle via a fourth CAN communication line.

9. The electrically driven control system according to claim 1, characterized in that the integrated control module is an MCU chip.

10. An electric vehicle characterized by including an electric drive control system according to any one of claims 1 to 9.

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