CN221162605U - Power supply circuit for starting vehicle and vehicle - Google Patents

Abstract

The utility model relates to a power supply circuit for starting a vehicle and the vehicle, wherein the power supply circuit comprises a first battery module, and the first battery module is a battery which normally works in a first set temperature range; the second battery module is a battery which normally works in a second set temperature range; the first end of the first switch circuit is connected with the second end of the first battery module, the second end of the first switch circuit is connected with the first end of the second battery module, and the third end of the first switch circuit is connected with the second end of the second battery module; and when the environmental temperature value is smaller than or equal to a first set temperature value, the control circuit controls the first end and the second end of the first switch circuit to be conducted, and the first battery module and the second battery module which are connected in series are used as power sources for supplying power. According to the power supply circuit provided by the utility model, the vehicle can be started at low temperature on the premise of simple structure.

Description

Power supply circuit for starting vehicle and vehicle

Technical Field

The utility model relates to the technical field of vehicle power supplies, in particular to a power supply circuit for starting a vehicle and the vehicle.

Background

For vehicles, cold starts are typically required by means of electricity. Not only is the low-voltage load device of the vehicle required to be powered by a battery during cold start of a pure electric vehicle, but also the electric ignition device of the vehicle is required to be powered by the battery for a pure fuel vehicle or a hybrid vehicle. In order to enable a vehicle to be started in a low-temperature environment, a lead-acid battery or a lithium iron phosphate battery with poor low-temperature performance and a sodium battery with good low-temperature performance are often combined to be used in the prior art, but the whole circuit structure is complex.

Disclosure of utility model

It is an object of the present utility model to provide a vehicle-started power supply circuit and a vehicle.

According to a first aspect of the present utility model, there is provided a power supply circuit for vehicle start-up, the power supply circuit comprising:

The first battery module is a battery which normally works in a first set temperature range;

The second battery module is a battery which normally works in a second set temperature range; wherein a first partial temperature value in the second set temperature range is lower than a lowest temperature value of the first set temperature range, the first partial temperature value being less than or equal to the first set temperature value;

The first end of the first switch circuit is connected with the second end of the first battery module, the second end of the first switch circuit is connected with the first end of the second battery module, and the third end of the first switch circuit is connected with the second end of the second battery module; and

The control circuit is electrically connected with the first switch circuit;

The control circuit controls the first end and the second end of the first switch circuit to be conducted under the condition that the environmental temperature value is smaller than or equal to a first set temperature value, the first battery module and the second battery module which are connected in series are used as power sources for supplying power, and controls the first end and the third end of the first switch circuit to be conducted under the condition that the environmental temperature value is larger than the first set temperature value, and the first battery module is independently used as the power sources for supplying power.

Optionally, the power supply circuit further comprises a temperature detection circuit, and the temperature detection circuit is connected with the control circuit;

Wherein the control circuit is configured to output a first control signal to the first switching circuit such that the first end and the second end of the first switching circuit are turned on in response to a first operation signal for starting the vehicle, in a case where an ambient temperature value output by the temperature detection circuit is less than or equal to a first set temperature value, and to output a second control signal to the first switching circuit such that the first end and the third end of the first switching circuit are turned on in a case where the ambient temperature value output by the temperature detection circuit is greater than the first set temperature value.

Optionally, the power supply circuit further includes a first voltage detection circuit, the first voltage detection circuit is connected with the control circuit, the first voltage detection circuit is used for detecting voltages at two ends of the first battery module, the control circuit is further configured to respond to a second operation signal for charging the battery or the first voltage detection circuit outputs a second control signal to the first switch circuit, wherein the second control signal is output to the first switch circuit, and the first end and the third end of the first switch circuit are enabled to be conducted.

Optionally, the power supply circuit further includes a second switch circuit, a first end of the second switch circuit is connected to the first end of the second battery module, and a second end of the second switch circuit is connected to the first end of the first battery module;

the first battery module independently supplies power as a power source under the condition that the first end and the third end of the first switch circuit are conducted, and the first battery module comprises: the first battery module is independently used as a power supply for supplying power under the condition that the first end and the third end of the first switch circuit are conducted and the second switch circuit is disconnected, and charges the second battery module under the condition that the first end and the third end of the first switch circuit are conducted and the second switch circuit is conducted.

Optionally, the power supply circuit further includes a second voltage detection circuit, the control circuit is connected to the second voltage detection circuit, the second voltage detection circuit is configured to detect a voltage across the second battery module, the control circuit is further configured to output a third control signal to the second switch circuit in response to a first detection signal output by the second voltage detection circuit, which indicates that the voltage across the second battery module is lower than or equal to a second set voltage, so that the second switch circuit is turned on, and output a fourth control signal to the second switch circuit in response to a second detection signal output by the second voltage detection circuit, which indicates that the voltage across the second battery module is higher than or equal to the third set voltage, so that the second switch circuit is turned off.

Optionally, the first battery module comprises a plurality of lithium batteries, and the second battery module comprises at least one sodium battery; the number of lithium batteries in the first battery module is four times the number of sodium batteries in the second battery module.

According to a second aspect of the present utility model, there is also provided a vehicle comprising:

A starting device;

A charging device; and

A power supply circuit such as the vehicle-started power supply circuit of the first aspect; the first end of the power supply circuit is connected with the charging device so as to charge the power supply circuit through the charging device, the second end of the power supply circuit is connected with the starting device, and the power supply circuit supplies power for the starting device to work.

Optionally, the vehicle comprises at least one of a battery low temperature power supply mode and a battery normal temperature power supply mode;

In the low-temperature battery power supply mode, a first battery module and a second battery module which are connected in series in the power supply circuit are used as power sources for supplying power to the vehicle; in the normal-temperature battery power supply mode, the vehicle supplies power by taking the first battery module in the power supply circuit as a power supply.

Optionally, the vehicle further comprises a battery charging mode, and in the battery charging mode, the first battery module in the power supply circuit charges as a load.

Optionally, the vehicle is classified into at least one of a pure fuel engine drive, an electric drive and a hybrid drive;

Wherein, under the condition that the vehicle is driven by a pure fuel engine, the charging device is a generator of the vehicle, and the starting device is an electric ignition device of the vehicle; when the vehicle is electrically driven, the charging device is a high-voltage battery of the vehicle, and the starting device is an electric ignition device of the vehicle; the vehicle is driven by hybrid power, the charging device is a high-voltage battery of the vehicle, and the starting device is low-voltage load equipment of the vehicle.

The control circuit can control the first switch circuit to be conducted so that the first battery module and the second battery module are connected in series under the condition that the control circuit detects that the ambient temperature value is smaller than or equal to the first set temperature value, and can increase voltage and further reduce current to meet the power requirement of vehicle starting. Under the condition that the control circuit detects that the ambient temperature value is greater than the first set temperature value, the second switch circuit can be controlled to be disconnected so that the first battery module is powered independently, and the whole circuit structure is simpler and the manufacturing cost is lower.

Other features of the present utility model and its advantages will become apparent from the following detailed description of exemplary embodiments of the utility model, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model.

FIG. 1 is a block diagram of a vehicle-enabled power supply circuit according to one embodiment of the application;

FIG. 2 is a block diagram of a control circuit embodying an embodiment of the present application;

FIG. 3 is a circuit diagram of a vehicle-initiated power supply circuit according to one embodiment of the application;

fig. 4 is a circuit diagram of a power supply circuit for vehicle start-up according to another embodiment of the present application.

Detailed Description

Various exemplary embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise.

The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses.

Techniques and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

Referring to fig. 1, a power supply circuit for vehicle start-up according to an embodiment of the present disclosure will be described.

The power supply circuit for vehicle start-up of the embodiment of the present disclosure includes a first battery module 10, a second battery module 20, a first switch circuit 30, and a control circuit 50.

The first battery module 10 is a battery that normally operates in a first set temperature range, which may be 0 ℃ to 80 ℃, may be-5 ℃ to 50 ℃, may be-20 ℃ to 100 ℃, and is not limited herein. The second battery module 20 is a battery that normally operates in a second set temperature range, which may be-30 ℃ to-20 ℃, may be-25 ℃ to 40 ℃, may be-30 ℃ to 0 ℃, and is not limited herein.

The first partial temperature value in the second set temperature range is lower than the lowest temperature value in the first set temperature range, and the first partial temperature value is smaller than or equal to the first set temperature value. For example, the second set temperature range is-30 ℃ to-20 ℃, the first set temperature range is 0 ℃ to 80 ℃, then the first partial temperature value is any value of-30 ℃ to-20 ℃, and the first set temperature value is-20 ℃.

A first end of the first switching circuit 30 is connected to the second end of the first battery module 10, a second end of the first switching circuit 30 is connected to the first end of the second battery module 20, and a third end of the first switching circuit 30 is connected to the second end of the second battery module 20. The control circuit 50 is electrically connected to the first switch circuit 30.

Detecting the ambient temperature value of the vehicle may be performed by different detection methods, for example, a corresponding temperature sensor is provided inside the control circuit 50 to detect the ambient temperature value of the vehicle, and for example, as shown in fig. 2, the control circuit 50 may obtain the ambient temperature value by acquiring a temperature detection circuit 60 configured on the vehicle. When the control circuit 50 detects that the ambient temperature value is less than or equal to the first set temperature value, the first end and the second end of the first switch circuit 30 are controlled to be conducted, the first battery module 10 and the second battery module 20 connected in series are used as power sources for supplying power, and when the control circuit 50 detects that the ambient temperature value is greater than the first set temperature value, the first end and the third end of the first switch circuit 30 are controlled to be conducted, and the first battery module 10 is independently used as the power sources for supplying power. The control circuit 50 controls the conduction of different ends of the first switch circuit 30, for example, the control circuit 50 is communicatively connected to the first switch circuit 30, and the control circuit 50 outputs different signals to control the conduction of corresponding ends of the first switch circuit 30.

In other words, in the case where the control circuit 50 detects that the ambient temperature value is greater than the first set temperature value, the second switch circuit 40 may be controlled to be turned off so that the first battery module 10 is powered independently, so that the overall circuit structure is simpler and the manufacturing cost is lower.

In some embodiments, the first battery module 10 may include a plurality of lithium batteries connected in series, and the second battery module 20 includes at least one sodium battery or supercapacitor, and the number of lithium batteries in the first battery module 10 is four times the number of sodium batteries in the second battery module 20. For example, some ordinary cars require an output voltage of 12V, the first battery module 10 may be four lithium batteries connected in series, and the second battery module 20 may be a sodium battery. For another example, some trucks may require 48V output voltage, the first battery module 10 may be sixteen lithium batteries connected in series, and the second battery module 20 may be four sodium batteries. In other words, according to the correspondence relationship between the battery in the first battery module 10 and the battery in the second battery module 20, the electric power for starting can be supplied to the different vehicles required.

In some embodiments, as shown in fig. 2, the power supply circuit further includes a temperature detection circuit 60, for example, a temperature sensor, and the temperature detection circuit 60 is connected to the control circuit 50. The control circuit 50 is configured to respond to a first operation signal for vehicle start, wherein the first operation signal may be a signal generated after the driver presses a start key in the cockpit.

Taking fig. 3 as an example, the first switch circuit 30 includes a first switch K1, the control circuit 50 is responsive to a first operation signal for starting the vehicle, and in the case where the ambient temperature value output by the temperature detection circuit 60 is less than or equal to a first set temperature value, the control circuit 50 outputs a first control signal such that a first end and a second end of the first switch K1 are turned on, the first battery module 10 and the second battery module 20 are connected in series, and the first battery module 10 and the second battery module 20 connected in series are connected in parallel to the starting apparatus 200 of the vehicle to supply power to the starting apparatus 200 of the vehicle. The control circuit 50 is responsive to a first operation signal for starting the vehicle, and in the case where the ambient temperature value output from the temperature detection circuit 60 is less than or equal to a first set temperature value, the control circuit 50 outputs a first control signal such that a first end of the first switch K1 is turned on with a third end, and the first battery module 10 is connected in parallel to the starting device 200 of the vehicle to supply power to the starting device 200 of the vehicle.

In some embodiments, as shown in fig. 2, the power supply circuit further includes a first voltage detection circuit 70, where the first voltage detection circuit 70 is connected to the control circuit 50, and the first voltage detection circuit 70 is configured to detect a voltage across the first battery module 10. The control circuit 50 is further configured to output a second control signal to the first switching circuit 30 in response to a second operation signal to charge the battery or the first voltage detection circuit 70 outputting a signal indicating that the voltage across the first battery module 10 is lower than the first set voltage, such that the first terminal and the third terminal of the first switching circuit 30 are turned on. The second operation signal is a signal generated by the driver actively triggering the battery to be charged, for example, the driver selects an option of charging in a central control screen in a cab, and the vehicle can feed back the second operation signal representing that the battery needs to be charged to the control signal. The first voltage detection circuit 70 is a conventional circuit, and the first voltage detection circuit 70 may actively feed back the voltage across the first battery module 10 to the control circuit 50, or the control circuit 50 may output the second control signal to the first switch circuit 30 when the voltage across the first battery module 10 fed back by the first voltage detection circuit 70 is lower than the first set voltage.

In some embodiments, the power supply circuit further includes a second switching circuit 40, a first end of the second switching circuit 40 is connected to the first end of the second battery module 20, and a second end of the second switching circuit 40 is connected to the first end of the first battery module 10. The first battery module 10 alone supplies power as a power source in the case where the first and third terminals of the first switch circuit 30 are turned on and the second switch circuit 40 is turned off, and the first battery module 10 charges the second battery module 20 in the case where the first and third terminals of the first switch circuit 30 are turned on and the second switch circuit 40 is turned on. As shown in fig. 4, the first switch circuit 30 includes a first switch K1, the second switch circuit 40 includes a second switch K2, and the first battery module 10 is connected in parallel with the starting device 200 and the charging device 300, respectively, in a case where the first terminal and the third terminal of the first switch K1 are turned on and the second switch K2 is turned off, so as to realize that the first battery module 10 alone supplies power as a power source. With the first and third terminals of the first switch K1 turned on and the second switch K2 turned on, the first battery module 10 is connected in parallel with the second battery module 20 so that the first battery module 10 can charge the second battery module 20. In other words, by providing the second switching circuit 40, the number of times of charging and discharging the second battery module 20 can be effectively reduced, further extending the service life of the first battery module 10.

In some embodiments, as shown in fig. 2, the power supply circuit further includes a second voltage detection circuit 80, and the control circuit 50 is connected to the second voltage detection circuit 80, where the second voltage detection circuit 80 is configured to detect a voltage across the second battery module 20. The first voltage detection circuit 70 is an existing circuit, and is not limited herein.

The control circuit 50 is further configured to output a third control signal to the second switching circuit 40 in response to the first detection signal indicating that the voltage across the second battery module 20 is lower than or equal to the second set voltage, which is output from the second voltage detection circuit 80, so that the second switching circuit 40 is turned on, and to output a fourth control signal to the second switching circuit 40 in response to the second detection signal indicating that the voltage across the second battery module 20 is higher than or equal to the third set voltage, which is output from the second voltage detection circuit 80, so that the second switching circuit 40 is turned off. Taking fig. 4 as an example, the second switch circuit 40 includes a second switch K2, and when the second voltage detection circuit 80 detects that the voltage across the second battery module 20 is lower than or equal to the second set voltage, the control circuit 50 may control the second switch K2 to be turned on, and at this time, the first end and the third end of the first switch K1 are turned on, so that the first battery module 10 and the second battery module 20 are connected in parallel, and the first battery module 10 charges the second battery module 20. In the case where the second voltage detection circuit 80 detects that the voltage across the second battery module 20 is higher than the second set voltage, the control circuit 50 may control the second switch K2 to be turned off while the first terminal and the third terminal of the first switch K1 are turned on, so that the charging device 300 may charge the first battery module 10 or the first battery module 10 may supply power to the starting device 200. In other words, by providing the second voltage detection circuit 80, the first battery module 10 can charge the second battery module 20 a smaller number of times to improve the service life of the first battery module 10 while ensuring that the second battery module 20 has an appropriate amount of electricity.

The second set voltage is, for example, 2.3V, 3V, or 3.5V, and the third set voltage is, for example, 3.8V, 4V, or 4.4V, and the like, which is not limited herein.

In some examples, the control circuit 50 is a BMS chip, and may detect the voltage across the first battery module 10 through the first voltage detection circuit 70, may detect the battery across the second battery module 20 through the second voltage detection circuit 80, and may also control the first and second switches.

According to the present utility model, there is provided a vehicle including a starting device 200, a charging device 300, and a power supply circuit.

The power supply circuit is as in the vehicle-started power supply circuit of any of the above embodiments. The first end of the power supply circuit is connected with the charging device 300 so as to charge the power supply circuit through the charging device 300, the second end of the power supply circuit is connected with the starting device 200, and the power supply circuit provides power for the starting device 200 to work.

In other words, the vehicle can simplify the internal circuit structure by providing the power supply circuit, on the one hand, the vehicle internal volume can be reduced, and on the other hand, the manufacturing cost of the vehicle can be effectively reduced.

In some embodiments, the vehicle includes at least one of a battery low temperature power mode and a battery normal temperature power mode; in the low-temperature battery power supply mode, the first battery module 10 and the second battery module 20 which are connected in series in the power supply circuit are used as power sources for supplying power to the vehicle; in the battery normal temperature power supply mode, the vehicle supplies power as a power source to the first battery module 10 in the power supply circuit.

In other words, the vehicle can detect that the vehicle is in a low-temperature environment by the temperature sensor, and switch to the battery low-temperature power supply mode to supply power by the first battery module 10 and the second battery connected in series, so that the vehicle can be started normally in the low-temperature environment, and the service life of the first battery module 10 can be prolonged.

In some embodiments, the vehicle further includes a battery charging mode in which the vehicle is in the battery charging mode with the first battery module 10 in the power supply circuit as a load, and the charging device 300 may charge the first battery module 10 to enable the first battery module 10 to continuously supply power to the starting device 200.

In some examples, the vehicle further includes a battery distribution mode in which the first battery module 10 in the power supply circuit charges the second battery module 20. The control circuit 50 of the vehicle may detect that the electric quantity of the second battery module 20 is lower than or equal to the second set voltage, and control the first battery module 10 to charge the second battery module 20 to achieve the charging of the second battery.

In some embodiments, the vehicle is classified into at least one of a pure fuel engine drive, an electric drive, and a hybrid drive. Wherein, in the case that the vehicle is driven by a pure fuel engine, the charging device 300 is a generator of the vehicle, and the starting device 200 is an electric ignition device of the vehicle; in the case where the vehicle is electrically driven, the charging device 300 is a high-voltage battery of the vehicle, and the starting device 200 is an electric ignition device of the vehicle; the vehicle is hybrid driven, the charging device 300 is a high-voltage battery of the vehicle, and the starting device 200 is a low-voltage load apparatus of the vehicle. In other words, by combining the power supply circuit with a different starting device 200 or charging device 300, it is possible to realize that the power supply circuit is suitable for vehicle starting of different driving modes.

While certain specific embodiments of the utility model have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the utility model. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the utility model. The scope of the utility model is defined by the appended claims.

Claims (10)

1. A power supply circuit for vehicle start-up, the power supply circuit comprising:

The first battery module is a battery which normally works in a first set temperature range;

The second battery module is a battery which normally works in a second set temperature range; wherein a first partial temperature value in the second set temperature range is lower than a lowest temperature value of the first set temperature range, the first partial temperature value being less than or equal to the first set temperature value;

The first end of the first switch circuit is connected with the second end of the first battery module, the second end of the first switch circuit is connected with the first end of the second battery module, and the third end of the first switch circuit is connected with the second end of the second battery module; and

The control circuit is electrically connected with the first switch circuit;

The control circuit controls the first end and the second end of the first switch circuit to be conducted under the condition that the environmental temperature value is smaller than or equal to a first set temperature value, the first battery module and the second battery module which are connected in series are used as power sources for supplying power, and controls the first end and the third end of the first switch circuit to be conducted under the condition that the environmental temperature value is larger than the first set temperature value, and the first battery module is independently used as the power sources for supplying power.

2. The vehicle-started power supply circuit of claim 1, further comprising a temperature detection circuit connected to the control circuit;

Wherein the control circuit is configured to output a first control signal to the first switching circuit such that the first end and the second end of the first switching circuit are turned on in response to a first operation signal for starting the vehicle, in a case where an ambient temperature value output by the temperature detection circuit is less than or equal to a first set temperature value, and to output a second control signal to the first switching circuit such that the first end and the third end of the first switching circuit are turned on in a case where the ambient temperature value output by the temperature detection circuit is greater than the first set temperature value.

3. The vehicle-started power supply circuit according to claim 2, further comprising a first voltage detection circuit connected to the control circuit, the first voltage detection circuit configured to detect a voltage across the first battery module, the control circuit further configured to output a second control signal to the first switch circuit in response to a second operation signal to charge the battery or the first voltage detection circuit outputting a signal indicating that the voltage across the first battery module is lower than a first set voltage, such that the first end and the third end of the first switch circuit are turned on.

4. The vehicle-started power supply circuit of claim 1, further comprising a second switching circuit, a first end of the second switching circuit being connected to the first end of the second battery module, a second end of the second switching circuit being connected to the first end of the first battery module;

the first battery module independently supplies power as a power source under the condition that the first end and the third end of the first switch circuit are conducted, and the first battery module comprises: the first battery module is independently used as a power supply for supplying power under the condition that the first end and the third end of the first switch circuit are conducted and the second switch circuit is disconnected, and charges the second battery module under the condition that the first end and the third end of the first switch circuit are conducted and the second switch circuit is conducted.

5. The vehicle-started power supply circuit according to claim 4, further comprising a second voltage detection circuit to which the control circuit is connected, the second voltage detection circuit being configured to detect a voltage across the second battery module, the control circuit being further configured to output a third control signal to the second switching circuit in response to a first detection signal output by the second voltage detection circuit indicating that the voltage across the second battery module is lower than or equal to a second set voltage, so that the second switching circuit is turned on, and to output a fourth control signal to the second switching circuit in response to a second detection signal output by the second voltage detection circuit indicating that the voltage across the second battery module is higher than or equal to the third set voltage, so that the second switching circuit is turned off.

6. The vehicle-started power supply circuit of any of claims 1-5, wherein the first battery module comprises a plurality of lithium batteries and the second battery module comprises at least one sodium battery; the number of lithium batteries in the first battery module is four times the number of sodium batteries in the second battery module.

7. A vehicle, characterized by comprising:

A starting device;

A charging device; and

A power supply circuit of a vehicle-started power supply circuit according to any one of claims 1 to 6; the first end of the power supply circuit is connected with the charging device so as to charge the power supply circuit through the charging device, the second end of the power supply circuit is connected with the starting device, and the power supply circuit supplies power for the starting device to work.

8. The vehicle of claim 7, wherein the vehicle includes at least one of a battery low temperature power mode and a battery normal temperature power mode;

In the low-temperature battery power supply mode, a first battery module and a second battery module which are connected in series in the power supply circuit are used as power sources for supplying power to the vehicle; in the normal-temperature battery power supply mode, the vehicle supplies power by taking the first battery module in the power supply circuit as a power supply.

9. The vehicle of claim 7, further comprising a battery charging mode in which the vehicle is charged as a load by a first battery module in the power supply circuit.

10. The vehicle according to any one of claims 7 to 9, characterized in that the vehicle is classified into at least one of a pure fuel engine drive, a vehicle being an electric drive, and a hybrid drive;

Wherein, under the condition that the vehicle is driven by a pure fuel engine, the charging device is a generator of the vehicle, and the starting device is an electric ignition device of the vehicle; when the vehicle is electrically driven, the charging device is a high-voltage battery of the vehicle, and the starting device is an electric ignition device of the vehicle; the vehicle is driven by hybrid power, the charging device is a high-voltage battery of the vehicle, and the starting device is low-voltage load equipment of the vehicle.