Power domain controller of vehicle and vehicle comprising same

Abstract

The utility model provides a power domain controller of a vehicle and the vehicle including the same. The power domain controller is integrated with a main control chip and a voltage conversion chip. The power domain controller further comprises a high-voltage connection port, a low-voltage connection port and a battery connection port. The main control chip is integrated with a whole vehicle control module, a motor control module and a battery management module, is connected with the high-voltage electric component through a high-voltage connecting port, is connected with the low-voltage electric component through a low-voltage connecting port, and is connected with the power battery through a battery connecting port. And the main control chip is used for controlling the high-voltage electric component, the low-voltage electric component and the power battery to work. The voltage conversion chip is integrated with a DC / DC conversion module, is connected with a low-voltage electric component through a low-voltage connection port, and is connected with a power battery through a battery connection port. And the main control chip is used for controlling the voltage conversion chip to work according to the working states of the high-voltage power utilization component, the low-voltage power utilization component and the power battery. According to the invention, the integration level of the power domain controller is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power domain control of vehicles, and in particular to a power domain controller of a vehicle and a vehicle comprising the same. BACKGROUND

[0002] With the rapid development of new energy vehicle technology, new energy vehicles are equipped with more and more intelligent, entertainment, driving assistance and other functions. With the explosive increase of vehicle functions, new energy vehicles need to install various independent electronic control terminals, which are responsible for different functions, but need to exchange data and coordinate control with each other.

[0003] In the prior art, these control terminals are often arranged dispersedly, and need to be connected through complex lines to realize function cooperation. The large number of control terminals leads to great difficulty in arrangement and high cost, and the electromagnetic interference generated between the electronic control terminals also causes different degrees of influence on the electromagnetic compatibility of the vehicle. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a power domain controller of a vehicle with high integration and a vehicle comprising the same.

[0005] The present application provides a power domain controller of a vehicle, the vehicle comprising a high-voltage electrical component, a low-voltage electrical component and a power battery, the power domain controller being integrated with a main control chip and a voltage conversion chip, the power domain controller further comprising a high-voltage connection port, a low-voltage connection port and a battery connection port;

[0006] The main control chip is integrated with a vehicle control module, a motor control module and a battery management module, is connected with the high-voltage electrical component through the high-voltage connection port, is connected with the low-voltage electrical component through the low-voltage connection port, and is connected with the power battery through the battery connection port; the main control chip is used for controlling the high-voltage electrical component, the low-voltage electrical component and the power battery to work;

[0007] The voltage conversion chip is integrated with a DC / DC conversion module, is connected with the low-voltage electrical component through the low-voltage connection port, and is connected with the power battery through the battery connection port;

[0008] The main control chip is electrically connected with the voltage conversion chip, and is used for controlling the voltage conversion chip to work according to the working states of the high-voltage electrical component, the low-voltage electrical component and the power battery.

[0009] Optionally, the voltage conversion chip is further integrated with a DC / AC conversion module, and the power domain controller further comprises an external power supply interface, the DC / AC conversion module is connected with an external power supply through the external power supply interface, and is used to convert the voltage of the external power supply to charge the power battery.

[0010] Optionally, the power domain controller is integrated with a driving chip electrically connected with the master control chip, is connected with the power battery through the battery connection port, and is connected with the high-voltage electrical component through the high-voltage connection port, and is used to convert the voltage of the power battery according to the electrical signal of the master control chip, and drive the high-voltage electrical component to work.

[0011] Optionally, the power domain controller is integrated with a power distribution chip electrically connected with the master control chip, is connected with the power battery through the battery connection port, and is connected with the high-voltage electrical component through the high-voltage connection port, and is used to transmit the electrical energy of the power battery to the high-voltage electrical component according to the electrical signal of the master control chip.

[0012] Optionally, the power distribution chip comprises a contactor and a fuse, and connects the power battery and the high-voltage electrical component.

[0013] Optionally, the power domain controller is arranged in a shell, the shell comprises a cooling liquid channel, the power domain controller is integrated with a temperature acquisition module electrically connected with the master control chip, the temperature acquisition module comprises a first temperature sensing element arranged in the cooling liquid channel and a second temperature sensing element arranged in the power domain controller.

[0014] Optionally, the temperature acquisition module is integrated with the master control chip.

[0015] Optionally, the temperature acquisition module is integrated with the voltage conversion chip.

[0016] Optionally, the high-voltage electrical component comprises a motor, an electric heater and an air conditioner.

[0017] Optionally, the low-voltage electrical component comprises a storage battery, a socket, a pedal and a hand brake.

[0018] The application further provides a vehicle, comprising: a high-voltage electrical component, a low-voltage electrical component and a power battery; and a power domain controller as described in any one of the above, which is electrically connected with the high-voltage electrical component, the low-voltage electrical component and the power battery.

[0019] In some embodiments, the power domain controller integrates a master control chip and a voltage conversion chip; the master control chip integrates a vehicle control module, a motor control module and a battery management module; the voltage conversion chip integrates a DC / DC conversion module; the master control chip is electrically connected with the voltage conversion chip, and is configured to control the voltage conversion chip to work according to working states of the high-voltage electrical components, the low-voltage electrical components and the power battery; by integrating the master control chip integrating the vehicle control module, the motor control module and the battery management module and the voltage conversion chip integrating the DC / DC conversion module into the power domain controller, the number of chips of the power domain controller can be reduced, the difficulty of chip arrangement can be reduced, electromagnetic interference between chips can be reduced, and cost can be reduced.

[0020] It should be understood that the general description above and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0021] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0022] Figure 1 A structural block diagram of one embodiment of a vehicle of the present application is shown.

[0023] Figure 2 A structural block diagram of another embodiment of a power domain controller is shown. Figure 1 A structural block diagram of another embodiment of a power domain controller is shown. DETAILED DESCRIPTION

[0024] The present application provides a power domain controller of a vehicle and a vehicle comprising the same. The power domain controller of a vehicle and a vehicle comprising the same of the present application are described in detail below with reference to the accompanying drawings. The features in the following embodiments and implementation examples can be combined with each other without conflict.

[0025] Figure 1 A structural block diagram of one embodiment of a vehicle 10 of the present application is shown. As shown in Figure 1 As shown, the vehicle 10 comprises high-voltage electrical components 11, low-voltage electrical components 12 and a power battery 13, and a power domain controller 20 provided by the present application. The power domain controller 20 is electrically connected with the high-voltage electrical components 11, the low-voltage electrical components 12 and the power battery 13.

[0026] The high-voltage electrical component 11 is a component in the vehicle 10 that requires high-voltage electricity. In some embodiments, the high-voltage electrical component 11 includes a motor, an electric heater, and an air conditioner. The motor converts electrical energy into mechanical energy to drive the vehicle 10. In a low-temperature environment, the power battery 13 needs a certain amount of heat to work normally, and the electric heater can heat the power battery 13, playing a role in preheating the power battery 13. The air conditioner plays a role in providing cooling and heating, and air circulation for the vehicle 10.

[0027] The low-voltage electrical component 12 is a component in the vehicle 10 that requires low-voltage electricity. In some embodiments, the low-voltage electrical component 12 includes a storage battery, a socket, a pedal, and a hand brake. The storage battery provides electrical energy for the vehicle and stores electrical energy. When the engine is started or running at low speed, the generator of the vehicle 10 does not generate electricity or the voltage is very low, and all the electronic systems in the vehicle are powered by the storage battery. The socket is used to provide power for vehicle-mounted electrical equipment, such as a cigarette lighter socket, an inverter power socket, etc. The pedal includes a clutch pedal, a brake pedal, and an accelerator pedal. The hand brake is a component to ensure the safety of the vehicle when it is parked, including a mechanical hand brake and an electronic hand brake.

[0028] The power battery 13 is used to provide electrical energy for the vehicle 10. The electrical energy output by the power battery 13 can be converted to provide power to the high-voltage electrical component 11 and the low-voltage electrical component 12. The power battery 13 can also receive charging from an external power source.

[0029] The power domain controller 20 is used to control the high-voltage electrical component 11, the low-voltage electrical component 12, and the power battery 13. The power domain controller 20 can control the charging or discharging of the power battery 13, obtain the working parameters of the high-voltage electrical component 11 and the low-voltage electrical component 12, and control the working state of the high-voltage electrical component 11 and the low-voltage electrical component 12.

[0030] The power domain controller 20 of the vehicle is integrated with a main control chip 30 and a voltage conversion chip 40. The power domain controller 20 also includes a high-voltage connection port 21, a low-voltage connection port 22, and a battery connection port 23.

[0031] The main control chip 30 is integrated with a vehicle control module 31, a motor control module 32, and a battery management module 33, and is connected to the high-voltage electrical component 11 through the high-voltage connection port 21, connected to the low-voltage electrical component 12 through the low-voltage connection port 22, and connected to the power battery 13 through the battery connection port 23. The main control chip 30 is used to control the working of the high-voltage electrical component 11, the low-voltage electrical component 12, and the power battery 13.

[0032] The voltage conversion chip 40 is integrated with a DC / DC conversion module 41, and is connected to the low-voltage electrical component 12 through the low-voltage connection port 22 and connected to the power battery 13 through the battery connection port 23.

[0033] The master control chip 30 is electrically connected with the voltage conversion chip 40, and is configured to control the voltage conversion chip 40 to work according to the working states of the high-voltage electrical components 11, the low-voltage electrical components 12 and the power battery 13.

[0034] The power domain controller 20 integrates multiple control modules for intelligently managing the entire power system of the vehicle 10.

[0035] The vehicle control module 31 is responsible for receiving signals from various sensors of the vehicle 10, and controlling the driving state of the vehicle, such as acceleration, deceleration, steering, etc., according to these signals and preset algorithms.

[0036] The motor control module 32 is specially used for controlling the operation of the motor, including the start, stop, speed and torque adjustment of the motor, etc.

[0037] The battery management module 33 is responsible for monitoring the state of the power battery 13, including the parameters such as the power, temperature, voltage and current of the battery, and adjusting the charging and discharging strategy of the battery according to these parameters, to ensure the safety and efficient use of the battery.

[0038] The vehicle control module 31, the motor control module 32 and the battery management module 33 are integrated in the master control chip 30. The master control chip 30 integrates the control logic of the vehicle control module 31, the motor control module 32 and the battery management module 33. The vehicle control module 31, the motor control module 32 and the battery management module 33 do not need to be connected through a wire harness. The functions of the vehicle control module 31, the motor control module 32 and the battery management module 33 are realized through one master control chip 30, instead of three chips.

[0039] The master control chip 30 also has functions of HVIL (High Voltage Interlock) detection, SOC (State of Charge) estimation, SOH (State of Health) estimation, insulation detection, fault diagnosis, etc.

[0040] The interfaces such as the high-voltage connection port 21, the low-voltage connection port 22 and the battery connection port 23 are used for connecting the power domain controller 20 with other components of the vehicle 10. The high-voltage connection port 21 is used for connecting the high-voltage electrical components 11, such as the motor and the electric compressor, which need high-voltage power supply to drive. The low-voltage connection port 22 is used for connecting the low-voltage electrical components 12, such as the car audio and the lighting system, which usually use low-voltage power supply. The battery connection port 23 is connected with the power battery 13, and is used for monitoring the state of the power battery 13 and controlling the charging and discharging process of the power battery 13.

[0041] The DC / DC conversion module 41 is responsible for converting the high-voltage direct current provided by the power battery 13 into low-voltage direct current for use by the low-voltage electrical components 12. At the same time, the voltage conversion chip 40 also accepts control from the master control chip 30 and adjusts the output voltage and current according to the working state of the high-voltage electrical components 11, the low-voltage electrical components 12, and the power battery 13 to meet the power requirements of different components.

[0042] The master control chip 30 and the voltage conversion chip 40 are integrated into the power domain controller 20, share the external interface of the power domain controller 20, and share the working parameters of other components obtained by the power domain controller 20. The master control chip 30 and the voltage conversion chip 40 are connected through a low-voltage wiring harness.

[0043] By integrating the master control chip 30, which integrates the whole vehicle control module 31, the motor control module 32, and the battery management module 33, and the voltage conversion chip 40, which integrates the DC / DC conversion module 41, into the power domain controller 20, the integration level of the power domain controller 20 is improved, the number of chips of the power domain controller 20 is reduced, the difficulty of chip arrangement is reduced, electromagnetic interference between chips is reduced, and the cost is reduced.

[0044] Figure 2 As shown in Figure 1 The structural block diagram of another embodiment of the power domain controller 20 is shown.

[0045] As Figure 2 As shown, the voltage conversion chip 40 also integrates a DC / AC conversion module 42. The power domain controller 20 also includes an external power supply interface, and the DC / AC conversion module 42 connects to an external power supply through the external power supply interface for converting the voltage of the external power supply to charge the power battery 13.

[0046] The voltage conversion chip 40 integrates the DC / AC conversion module 42 in addition to the DC / DC conversion module 41. The DC / AC conversion module 42 is used to convert direct current into alternating current. The DC / AC conversion module 42 is connected to an external power supply through an external power supply interface. The external power supply can be a charging pile or other power supply that can provide alternating current. When the power battery 13 needs to be charged, the DC / AC conversion module 42 converts the alternating current provided by the external power supply into direct current suitable for charging the power battery 13.

[0047] The external power supply interface is an interface on the power domain controller 20 for connecting an external power supply. The external power supply interface also has protection measures such as waterproofing, dustproofing, and overvoltage and overcurrent protection to ensure that the power domain controller 20 or the power battery 13 is not damaged during charging.

[0048] By integrating the DC / AC conversion module 42, the power domain controller 20 can not only obtain electrical energy from the power battery 13, but also can be charged by an external power source. This enables the power domain controller 20 to manage the electrical energy of the power system during the driving of the vehicle 10, and also can provide charging services for the power battery 13 when the vehicle 10 is stationary.

[0049] The voltage conversion chip 40 integrates the DC / AC conversion module 42, which enables it to more comprehensively manage the electrical energy of the vehicle 10, improves the flexibility and convenience of the vehicle 10, and enables the vehicle 10 to be charged in different environments and conditions, thereby prolonging the endurance mileage and use time of the vehicle 10.

[0050] In some embodiments, the power domain controller 20 is arranged in a housing, the housing comprises a cooling liquid channel, the power domain controller 20 is integrated with a temperature acquisition module 34 electrically connected with the master control chip 30, the temperature acquisition module 34 comprises a first temperature sensing element arranged in the cooling liquid channel, and a second temperature sensing element arranged in the power domain controller 20.

[0051] The housing provides necessary protection and support for the power domain controller 20. The housing is built-in with a cooling liquid channel. The cooling liquid channel is used to flow cooling liquid, which circulates in the channel and can effectively take away the heat generated by the power domain controller 20, so that effective heat dissipation can be achieved, and the stable performance of the power domain controller 20 can be ensured under high-intensity working conditions.

[0052] The power domain controller 20 is integrated with a temperature acquisition module 34 electrically connected with the master control chip 30. The temperature acquisition module 34 is used to monitor the temperature of the power domain controller 20 and its surrounding environment in real time. The first temperature sensing element is arranged in the cooling liquid channel of the housing, and is used to monitor the temperature of the cooling liquid. The second temperature sensing element is arranged inside or on the surface of the power domain controller 20. The second temperature sensing element can directly perceive the temperature of the power domain controller 20 itself, and provides direct and accurate temperature data for the temperature acquisition module 34.

[0053] According to the detection data of the first temperature sensing element and the second temperature sensing element, the temperature acquisition module 34 can obtain the temperature conditions of the power domain controller 20 and the cooling liquid in the cooling liquid channel. If an abnormal temperature is detected, for example, the temperature of the power domain controller 20 is too high, the master control chip 30 will send an alarm signal according to the obtained temperature data, and trigger corresponding heat dissipation measures or protection measures to ensure the safe and stable operation of the power domain controller 20.

[0054] The power domain controller 20 is integrated with a temperature acquisition module 34 electrically connected with the main control chip 30. The temperature acquisition module 34 includes a first temperature sensing element arranged in the cooling liquid channel and a second temperature sensing element arranged in the power domain controller 20. In this way, the thermal load of the power domain controller 20 can be evaluated, the working life thereof can be predicted, and potential overheating risks can be found in time.

[0055] In some embodiments, the temperature acquisition module 34 is integrated with the main control chip 30. In other embodiments, as shown in FIG. 2, the temperature acquisition module 34 is integrated with the voltage conversion chip 40. Figure 2 The temperature acquisition module 34 is integrated with the main control chip 30 or the voltage conversion chip 40. The temperature acquisition module 34 shares an external interface with the main control chip 30 or the voltage conversion chip 40, which can improve the integration of the power domain controller 20.

[0056] As shown in FIG. 2, the power domain controller 20 is integrated with a driving chip 50 electrically connected with the main control chip 30. The driving chip 50 is connected with the power battery 13 through the battery connection port 23 and is connected with the high-voltage electrical component 11 through the high-voltage connection port 21. The driving chip 50 is used to convert the voltage of the power battery 13 and drive the high-voltage electrical component 11 to work according to the electrical signal of the main control chip 30. Figure 2

[0057] The main control chip 30 is responsible for receiving and processing signals from various sensors and issuing corresponding control instructions according to the signals. The driving chip 50 is responsible for converting the control instructions into specific electrical signals to drive the high-voltage electrical component 11 (such as a motor) to work. The driving chip 50 includes SiC or IGBT.

[0058] The driving chip 50 in the power domain controller 20 can convert and adjust the voltage output by the power battery 13 according to the instructions of the main control chip 30. In this way, it can ensure that the high-voltage electrical component 11 can obtain stable and suitable voltage.

[0059] The high-voltage electrical component 11, such as a motor, a compressor, etc., is connected with the power domain controller 20 through the high-voltage connection port 21 and receives the driving signal from the driving chip 50. Under the action of the driving signal, the high-voltage electrical component 11 can work normally and provide the required power for the vehicle 10.

[0060] The power domain controller 20 is integrated with the driving chip 50, which improves the integration of the power domain controller 20. The power domain controller 20 can flexibly adjust the output voltage of the power battery 13 and the working state of the high-voltage electrical component 11 according to different driving conditions and requirements, thereby optimizing the energy consumption and performance of the vehicle 10.

[0061] ​The power domain controller 20 is integrated with a power distribution chip 60 that is electrically connected to the main control chip 30. The power distribution chip 60 is connected to the power battery 13 through a battery connection port 23 and connected to the high-voltage electrical components 11 through a high-voltage connection port 21, for transmitting the electrical energy of the power battery 13 to the high-voltage electrical components 11 according to the electrical signals of the main control chip 30.

[0062] The integration of the power distribution chip 60 in the power domain controller 20 enables the power domain controller 20 to more effectively manage and distribute the electrical energy from the power battery 13. The power distribution chip 60 not only receives the electrical signal instructions from the main control chip 30, but also accurately transmits the electrical energy of the power battery 13 to each high-voltage electrical component 11 according to these instructions.

[0063] The power distribution chip 60 can monitor key parameters such as the power, voltage, and current of the power battery 13, ensuring that the electrical energy transmission does not exceed the safe range of the power battery 13. The power distribution chip 60 also dynamically adjusts the electrical energy transmitted to the high-voltage electrical components 11 according to the instructions of the main control chip 30 to meet the energy demand under different working conditions.

[0064] The high-voltage electrical components 11 receive electrical energy from the power distribution chip 60. The power distribution chip 60 accurately controls the electrical energy transmitted to these high-voltage electrical components 11 according to the instructions of the main control chip 30, ensuring that they can work normally.

[0065] The power distribution chip 60 also has functions such as overcurrent protection, short circuit protection, overvoltage protection, and undervoltage protection. In this way, it can ensure that in the process of electrical energy transmission, even if abnormal situations are encountered, the power supply can be cut off in time to prevent equipment damage or the occurrence of safety accidents such as fires.

[0066] The integration of the power distribution chip 60 in the power domain controller 20 improves the integration level of the power domain controller 20, enabling the vehicle 10 to obtain stable and sufficient electrical energy supply under various working conditions, thereby optimizing the energy consumption and performance of the vehicle 10.

[0067] The power distribution chip 60 includes contactors and fuses that connect the power battery 13 and the high-voltage electrical components 11.

[0068] The contactor is a remotely controlled electrical switch that is used to connect or disconnect the circuit between the power battery 13 and the high-voltage electrical components 11. When the main control chip 30 issues an instruction, the contactor will respond quickly to open or close the circuit, thereby achieving precise control over the transmission of electrical energy.

[0069] The fuse is an electrical protection element, which can automatically disconnect the circuit when the circuit is overloaded or short-circuited, so as to prevent the occurrence of safety accidents such as equipment damage or fire. In the power domain controller 20, the fuse is connected in series in the circuit between the power battery 13 and the high-voltage electrical component 11. When the current in the circuit exceeds the rated value of the fuse, the fuse will quickly melt and cut off the circuit, thereby protecting the entire power system from damage.

[0070] The contactor and the fuse are selected according to the power and voltage resistance of the electrical component of the vehicle.

[0071] The power distribution chip 60 can achieve precise control of power transmission and provide reliable safety protection by integrating the contactor and the fuse.

[0072] In practical applications, whether the DC / AC conversion module 42, the drive chip 50 and the power distribution chip 60 need to be integrated in the power domain controller 20 can be determined according to the needs of specific vehicle models. In this way, the development cost of the power domain controller 20 can be reduced, and the development cycle can be shortened.

Claims

1. A power domain controller of a vehicle, characterized by, The vehicle comprises high-voltage electrical components, low-voltage electrical components and a power battery, the power domain controller is integrated with a main control chip and a voltage conversion chip, and the power domain controller further comprises a high-voltage connection port, a low-voltage connection port and a battery connection port; The main control chip is integrated with a vehicle control module, a motor control module and a battery management module, is connected with the high-voltage electrical components through the high-voltage connection port, is connected with the low-voltage electrical components through the low-voltage connection port, and is connected with the power battery through the battery connection port; the main control chip is used to control the high-voltage electrical components, the low-voltage electrical components and the power battery to work; The voltage conversion chip is integrated with a DC / DC conversion module, is connected with the low-voltage electrical components through the low-voltage connection port, and is connected with the power battery through the battery connection port; The main control chip is electrically connected with the voltage conversion chip, and is used to control the voltage conversion chip to work according to the working states of the high-voltage electrical components, the low-voltage electrical components and the power battery.

2. The power domain controller of the vehicle according to claim 1, characterized by, The voltage conversion chip is further integrated with a DC / AC conversion module, the power domain controller further comprises an external power supply interface, the DC / AC conversion module is connected with an external power supply through the external power supply interface, and is used to convert the voltage of the external power supply to charge the power battery.

3. The power domain controller of the vehicle according to claim 1, characterized by, The power domain controller is integrated with a driving chip electrically connected with the main control chip, is connected with the power battery through the battery connection port, and is connected with the high-voltage electrical components through the high-voltage connection port, and is used to convert the voltage of the power battery according to the electric signal of the main control chip, and drive the high-voltage electrical components to work.

4. The power domain controller of the vehicle according to claim 1, characterized by, The power domain controller is integrated with a power distribution chip electrically connected with the main control chip, is connected with the power battery through the battery connection port, and is connected with the high-voltage electrical components through the high-voltage connection port, and is used to transmit the electric energy of the power battery to the high-voltage electrical components according to the electric signal of the main control chip.

5. The power domain controller of the vehicle according to claim 4, characterized by, The power distribution chip comprises a contactor and a fuse, and connects the power battery and the high-voltage electrical components.

6. The power domain controller of the vehicle according to claim 1, characterized by, The power domain controller is arranged in a shell, the shell comprises a cooling liquid channel, the power domain controller is integrated with a temperature acquisition module electrically connected with the main control chip, the temperature acquisition module comprises a first temperature sensing element arranged in the cooling liquid channel and a second temperature sensing element arranged in the power domain controller.

7. The power domain controller of the vehicle according to claim 6, characterized by, The temperature acquisition module is integrated with the main control chip; or The temperature acquisition module is integrated with the voltage conversion chip.

8. The power domain controller of the vehicle according to claim 1, characterized by, The high-voltage electrical components comprise a motor, an electric heater and an air conditioner.

9. The power domain controller of the vehicle according to claim 1, characterized by, The low-voltage electrical components comprise a storage battery, a socket, a pedal and a hand brake.

10. A vehicle characterized by comprising: Comprise: High-voltage electrical components, low-voltage electrical components and a power battery; And the power domain controller according to any one of claims 1-9, which is electrically connected with the high-voltage electrical components, the low-voltage electrical components and the power battery.

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