CN118528956A - Vehicle battery control method, vehicle battery control system and vehicle - Google Patents

Abstract

The present disclosure provides a vehicle battery control method, a vehicle battery control system and a vehicle, which are applied to a vehicle battery control system, wherein the vehicle battery control system comprises a first battery connected to a first load, a second battery connected to a second load, a power converter connected to the first battery and the second battery respectively, a processor and a power isolator connected to the power converter, the power isolator, the first battery and the second battery respectively, and the power isolator is connected to the first battery and the second battery respectively, and is connected to the first load and the second load. By setting a power isolator connected to the first battery and the second battery respectively, it is avoided that the first battery is directly connected to the second battery, and when the power difference between the first battery and the second battery is large, the battery with higher power charges the battery with lower power, thereby ensuring the normal operation of the vehicle and the service life of the two batteries.

Description

Vehicle battery control method, vehicle battery control system and vehicle

Technical Field

The present disclosure relates to the field of vehicle control, and in particular to a vehicle battery control method, a vehicle battery control system and a vehicle.

Background Art

With the development of vehicle technology, in order to improve the performance of the vehicle, two batteries are included inside the vehicle to provide power for the vehicle load. As the vehicle is used, there is a situation where the power of the two batteries is unbalanced. When the power difference between the two batteries is too large, there is a problem that the battery with higher power will charge the battery with lower power, resulting in insufficient power supply to the vehicle load, affecting the normal use of the vehicle and reducing the battery life.

Summary of the invention

In view of this, the purpose of the present disclosure is to provide a vehicle battery control method, a vehicle battery control system and a vehicle, so as to solve or partially solve the above-mentioned problem that the normal use of the vehicle is affected by the imbalance of power between two batteries.

Based on the above purpose, a first aspect of the present disclosure provides a vehicle battery control system, which is applied to a vehicle battery control system, the vehicle battery control system includes a first battery connected to a first load, a second battery connected to a second load, a power converter connected to the first battery and the second battery respectively, a processor and a power isolator connected to the power converter, the power isolator, the first battery and the second battery respectively, the power isolator is connected to the first battery and the second battery respectively, and is connected to the first load and the second load, including:

The processor controls the power converter to supply power to the first battery and the second battery, and the first battery and the second battery are used to supply power to the first load and the second load through the power isolator; or,

The processor controls the first battery to supply power to the first load, and controls the second battery to supply power to the second load; or,

The processor controls the first battery or the second battery to supply power to the first load and the second load.

Based on the same inventive concept, the second aspect of the present disclosure proposes a vehicle battery control system, comprising:

A first battery connected to the first load;

a second battery connected to the second load;

A power converter connected to the first battery and the second battery respectively;

a power isolator, connected to the first battery and the second battery respectively, and connected to a first load and a second load;

The processor is respectively connected to the power converter, the power isolator, the first battery and the second battery, and is configured to control at least one of the first battery, the second battery and the power converter to supply power to the first load and/or the second load.

Based on the same inventive concept, the third aspect of the present disclosure proposes an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable by the processor, wherein the processor implements the method as described above when executing the computer program.

Based on the same inventive concept, a fourth aspect of the present disclosure proposes a non-transitory computer-readable storage medium, wherein the non-transitory computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a computer to execute the method as described above.

Based on the same inventive concept, the fifth aspect of the present disclosure provides a vehicle, including the vehicle battery control system described in the second aspect or the electronic device described in the third aspect or the storage medium described in the fourth aspect.

As can be seen from the above, the present disclosure provides a vehicle battery control method, a vehicle battery control system and a vehicle, wherein the vehicle battery control system includes a first battery connected to a first load, a second battery connected to a second load, a power converter connected to the first battery and the second battery respectively, a power isolator and a processor. The power isolator is connected to the first battery and the second battery respectively, and is connected to the first load and the second load. The processor is connected to the power converter, the power isolator, the first battery and the second battery respectively. The processor controls at least one of the first battery, the second battery and the power converter to supply power to the first load and/or the second load. By setting a power isolator connected to the first battery and the second battery respectively, the first battery is prevented from being directly connected to the second battery, and when the power difference between the first battery and the second battery is large, the battery with high power charges the battery with low power, thereby ensuring the normal operation of the vehicle and the service life of the two batteries.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions in the present disclosure or related technologies, the drawings required for use in the embodiments or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

FIG1A is a flow chart of an exemplary method provided by an embodiment of the present disclosure;

FIG1B is a schematic diagram of a vehicle battery control system provided by an embodiment of the present disclosure;

FIG1C is another schematic diagram of a vehicle battery control system provided by an embodiment of the present disclosure;

FIG1D is another schematic diagram of a vehicle battery control system provided by an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of the structure of an exemplary electronic device provided by an embodiment of the present disclosure.

The reference numerals in the embodiments of the present disclosure are as follows:

100 vehicle battery control systems;

101 a first battery, 102 a second battery, 103 a power converter, 104 a power isolator, 105 a processor;

106 first load, 107 second load;

108 a first controller, 109 a second controller, 110 a third controller;

111 is a first battery management system, 112 is a second battery management system.

DETAILED DESCRIPTION

In order to make the objectives, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the embodiments of the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

The terms used in this disclosure are explained as follows:

BMS: Battery Management System (BMS), together with equipment that monitors the status of energy storage batteries, is mainly used to intelligently manage and maintain each battery unit, prevent overcharging and over-discharging of the battery, extend the battery life, and monitor the battery status.

Power Converter: A DC-to-DC converter that takes a DC input voltage as input and outputs a different DC voltage. The output DC voltage can be higher or lower than the DC input voltage.

With the development of vehicle technology, in order to improve the performance of the vehicle, two batteries are included inside the vehicle to provide power for the vehicle load. As the vehicle is used, there is a situation where the power of the two batteries is unbalanced. When the power difference between the two batteries is too large, there is a problem that the battery with higher power will charge the battery with lower power, resulting in insufficient power supply to the vehicle load, affecting the normal use of the vehicle and reducing the battery life.

In view of this, how to ensure the balance of power between the two batteries and avoid the situation where the battery with high power charges the battery with low power has become an important research issue.

The embodiments of the present application are described below with reference to the accompanying drawings.

The embodiment of the present disclosure also provides a vehicle battery control method, which realizes the balance of the power of two batteries. FIG1A shows a flow chart of an exemplary method provided by the embodiment of the present disclosure. The method can be implemented by a vehicle battery control system 100. As shown in FIG1A, the method can further include the following steps.

Step 101: The processor controls a power converter to supply power to a first battery and a second battery, and utilizes the first battery and the second battery to supply power to a first load and a second load through a power isolator.

or,

Step 102: The processor controls the first battery to supply power to the first load, and controls the second battery to supply power to the second load.

or,

Step 103: The processor controls the first battery or the second battery to supply power to the first load and the second load.

In a specific implementation, FIG1B shows a schematic diagram of a vehicle battery control system 100 provided in an embodiment of the present disclosure.

As shown in FIG1B , the vehicle battery control system 100 includes a first battery 101, a second battery 102, a power converter 103, a power isolator 104, and a processor 105. The first battery 101 is connected to a first load 106, and the second battery 102 is connected to a second load 107. The power isolator 104 is connected to the first battery 101 and the second battery 102, respectively, and the power isolator 104 is also connected to the first load 106 and the second load 107. The power isolator 104 can monitor the voltage, current, and temperature of the low-voltage power supply circuit. The first battery 101 can supply power to the power isolator 104 and the first load 106, and the second battery 102 can supply power to the power isolator 104 and the second load 107.

In this embodiment, the first battery 101 and the second battery 102 are preferably 12V lithium batteries, and the power converter is preferably a DC/DC converter.

By providing a power isolator 104 connected to the first battery 101 and the second battery 102 respectively, it is avoided that the first battery 101 is directly connected to the second battery 102, and when the power difference between the first battery 101 and the second battery 102 is large, the battery with higher power charges the battery with lower power, thereby ensuring the normal operation of the vehicle and the service life of the two batteries.

The processor 105 is respectively connected to the power converter 103, the power isolator 104, the first battery 101 and the second battery 102, and the processor 105 controls at least one of the first battery 101, the second battery 102 and the power converter 103 to supply power to the first load 106 and/or the second load 107.

Exemplarily, the processor 105 controls the power converter 103 to supply power to the first battery 101 and the second battery 102 , and the first battery 101 and the second battery 102 are used to supply power to the first load 106 and the second load 107 through the power isolator 104 .

As another achievable example, the processor 105 controls the first battery 101 to supply power to the first load 106 , and controls the first battery 101 to supply power to the second load 107 through the power isolator 104 .

As another achievable example, the processor 105 controls the second battery 102 to supply power to the first load 106 through the power isolator 104 , and controls the second battery 102 to supply power to the second load 107 .

As another achievable example, the processor 105 controls the first battery 101 to supply power to the first load 106 , and controls the second battery 102 to supply power to the second load 107 .

Through the above scheme, the vehicle battery control system includes a first battery connected to a first load, a second battery connected to a second load, a power converter connected to the first battery and the second battery respectively, a power isolator and a processor. The power isolator is connected to the first battery and the second battery respectively, and is connected to the first load and the second load. The processor is connected to the power converter, the power isolator, the first battery and the second battery respectively. The processor controls at least one of the first battery, the second battery and the power converter to supply power to the first load and/or the second load. By setting a power isolator connected to the first battery and the second battery respectively, the first battery is prevented from being directly connected to the second battery, and when the power difference between the first battery and the second battery is large, the battery with high power charges the battery with low power, thereby ensuring the normal operation of the vehicle and the service life of the two batteries.

In some embodiments, step 101 specifically includes:

Step 1011, obtaining a first working state of the power converter and a second working state of the power isolator;

Step 1012, in response to the first working state being that the power converter is normal, and the second working state being that the power isolator is normal, controlling the first controller to close;

Step 1013, controlling the second controller to close, so that the power converter, the first battery, the power isolator and the first load are turned on, and the power converter is used to supply power to the first load, and the power converter, the first battery, the power isolator and the second load are turned on, and the power converter is used to supply power to the second load; or,

Step 1014, control the third controller to close, so that the power converter, the second battery, the power isolator and the first load are turned on, and the power converter is used to power the first load, and the power converter, the second battery, the power isolator and the second load are turned on, and the power converter is used to power the second load.

In a specific implementation, FIG1C shows another schematic diagram of a vehicle battery control system 100 provided in an embodiment of the present disclosure.

As shown in FIG1C , the vehicle battery control system 100 further includes a first controller 108 connected to the processor 105, a second controller 109 connected to the processor 105, and a third controller 110 connected to the processor 105. The first controller 108 is disposed on the power isolator 104, the second controller 109 is disposed on the first battery 101, and the third controller 110 is disposed on the second battery 102.

The processor 105 controls the first controller 108 to turn on and off the power isolator 104 , controls the second controller 109 to turn on and off the first battery 101 , and controls the third controller 110 to turn on and off the second battery 102 .

A first working state of the power converter 103 and a second working state of the power isolator 104 are acquired, wherein the first working state is a state indicating whether the power converter 103 works normally.

The first working state may be determined in at least one of the following ways: the first working state may be that the power converter 103 determines its own working state and sends the first working state to the processor 105. The first working state may also be that the processor 105 detects the first battery 101 and the second battery 102, detects that the first battery 101 and/or the second battery 102 are discharged, and determines the first working state of the power converter 103 according to the discharge condition of the first battery 101 and/or the second battery 102.

Specifically, when it is detected that the first battery 101 and/or the second battery 102 is discharged, it is determined that the first working state of the power converter 103 is an insufficient power supply state.

The second working state is a state indicating whether the power supply isolator 104 is working normally. The second working state is determined by the power supply isolator 104 itself performing a detection and sending the obtained second working state to the processor 105 .

When it is detected that the first working state of the power converter 103 is that the power converter 103 is normal, and the second working state of the power isolator 104 is that the power isolator 104 is normal, it means that the power converter 103 is operating normally and the power isolator 104 is operating normally. The power converter 103 is used to supply power to the first load 106 and the second load 107, and the first controller 108 controlling the power isolator 104 is closed.

Case 1: The second controller 109 is controlled to be closed. At this time, the power converter 103, the first battery 101, the power isolator 104 and the first load 106 are turned on, and the power converter 103 can supply power to the first load 106 through the first battery 101 and the power isolator 104. The power converter 103, the first battery 101, the power isolator 104 and the second load 107 are turned on, and the power converter 103 can supply power to the second load 107 through the first battery 101 and the power isolator 104.

Case 2: The third controller 110 is controlled to be closed. At this time, the power converter 103, the second battery 102, the power isolator 104 and the first load 106 are turned on, and the power converter 103 can supply power to the first load 106 through the second battery 102 and the power isolator 104. The power converter 103, the second battery 102, the power isolator 104 and the second load 107 are turned on, and the power converter 103 can supply power to the second load 107 through the second battery 102 and the power isolator 104.

In some embodiments, after determining that the first working state of the power converter 103 is an insufficient power supply state, the first battery state of the first battery 101 is obtained, wherein the first battery state is a state indicating whether the first battery 101 is working normally. According to the first battery state of the first battery 101, it is determined that the controller that is closed simultaneously with the first controller 108 is the second controller 109 or the third controller 110.

Specifically, if the first battery state is that the first battery 101 is normal, this is situation 1. While controlling the first controller 108 to be closed, the second controller 109 is controlled to be closed, so that the power converter 103, the first battery 101, the power isolator 104 and the first load 106 are turned on, and the power converter 103 can supply power to the first load 106 through the first battery 101 and the power isolator 104. The power converter 103, the first battery 101, the power isolator 104 and the second load 107 are turned on, and the power converter 103 can supply power to the second load 107 through the first battery 101 and the power isolator 104.

If the first battery state is that the first battery 101 fails, this is the second situation. While controlling the first controller 108 to close, the third controller 110 is controlled to close. At this time, the power converter 103, the second battery 102, the power isolator 104 and the first load 106 are turned on, and the power converter 103 can supply power to the first load 106 through the second battery 102 and the power isolator 104. The power converter 103, the second battery 102, the power isolator 104 and the second load 107 are turned on, and the power converter 103 can supply power to the second load 107 through the second battery 102 and the power isolator 104.

FIG. 1D shows a schematic diagram of a vehicle battery control system 100 provided in an embodiment of the present disclosure.

As shown in FIG. 1D , the system further includes:

The first battery management system 111 and the second battery management system 112 are configured to detect a first battery state of the first battery 101 and a second battery management system 112 is configured to detect a second battery state of the second battery 102.

Specifically, the working state of the first battery 101 is detected by the first battery management system 111, a first battery state is obtained, and the first battery state is sent to the processor 105. The working state of the second battery 102 is detected by the second battery management system 112, a second battery state is obtained, and the second battery state is sent to the processor 105.

In some embodiments, step 102 specifically includes:

Step 1021, obtaining a first working state of the power converter and a second working state of the power isolator;

Step 1022, in response to the second working state being that the power isolator is abnormal, control the first controller to be disconnected, the second controller to be closed, and the third controller to be closed, so that the first battery is connected to the first load, and the first battery is used to power the first load, and the second battery is connected to the second load, and the second battery is used to power the second load.

In a specific implementation, the first working state of the power converter 103 and the second working state of the power isolator 104 are obtained, wherein the first working state is a state indicating whether the power converter 103 is working normally, and the second working state is a state indicating whether the power isolator 104 is working normally.

When it is detected that the second working state of the power isolator 104 is abnormal, it indicates that there is a fault in the power isolator 104, and the power converter 103 can only supply power to the first load 106 and the second load 107 through the power isolator 104, so the power converter 103 cannot supply power to the first load 106 and the second load 107.

At this time, the first controller 108 is controlled to be disconnected, the second controller 109 is controlled to be closed, and the third controller 110 is controlled to be closed. The first battery 101 is connected to the first load 106, and the first battery 101 is used to power the first load 106. The second battery 102 is connected to the second load 107, and the second battery 102 is used to power the second load 107. It is ensured that when the power supply isolator 104 fails, the normal power supply of the vehicle load can still be achieved.

In some embodiments, step 103 specifically includes:

Step 1031, obtaining a first working state of the power converter and a second working state of the power isolator;

Step 1032, in response to the first working state being that the power converter is abnormal, and the second working state being that the power isolator is normal, obtaining a first battery state of the first battery;

Step 1033: Control the first battery or the second battery to supply power to the first load and the second load according to the first battery state.

In a specific implementation, the first working state of the power converter 103 and the second working state of the power isolator 104 are obtained, wherein the first working state is a state indicating whether the power converter 103 is working normally, and the second working state is a state indicating whether the power isolator 104 is working normally.

When it is determined that the first working state of the power converter 103 is that the power converter 103 is abnormal, and the second working state is that the power isolator 104 is normal, it means that the power converter 103 is not working normally, but the power isolator 104 is working normally. At this time, the first battery state of the first battery 101 is obtained through the first battery management system 111, and the first battery 101 or the second battery 102 is controlled according to the first battery state to supply power to the first load 106 and the second load 107.

Exemplarily, the first battery 101 is controlled to supply power to the first load 106 and the second load 107 according to the first battery state.

In another example, the second battery 102 is controlled to supply power to the first load 106 and the second load 107 according to the first battery status.

In some embodiments, step 1033 specifically includes:

Step 10331, in response to the first battery status being that the first battery is normal, control the first controller to be closed, the second controller to be closed, and the third controller to be disconnected, so that the first battery is connected to the first load, and the first battery is connected to the second load through the power isolator, and the first battery is used to power the first load and the second load.

In a specific implementation, when the first battery state is that the first battery 101 is normal, the first battery 101 can be used to power the first load 106 and the second load 107. When the first battery 101 powers the second load 107, it needs to be powered by the power isolator 104. Therefore, the first controller 108 controlling the power isolator 104 is closed, the second controller 109 of the first battery 101 is closed, and the third controller 110 of the second battery 102 is disconnected.

At this time, the first battery 101 is connected to the first load 106, and the first battery 101 is connected to the second load 107 through the power isolator 104, the first battery 101 is used to power the first load 106, and the first battery 101 is used to power the second load 107 through the power isolator 104.

In some embodiments, the method further comprises:

Acquire a second battery status of the second battery 102;

In response to the first battery status being that the first battery 101 is normal, and the second battery status being that the second battery 102 is abnormal, the first controller 108 is controlled to be closed, the second controller 109 is controlled to be closed, and the third controller 110 is controlled to be disconnected, so that the first battery 101 is connected to the first load 106, and the first battery 101 is connected to the second load 107 through the power isolator 104, and the first battery 101 is used to power the first load 106 and the second load 107.

Specifically, the second battery state of the second battery 102 is determined by the second battery management system 112, and the second battery state is used to characterize whether the second battery 102 is working normally. When the first battery 101 is normal and the second battery 102 fails, the first battery 101 is used to power the first load 106 and the second load 107. When the first battery 101 powers the second load 107, it needs to be powered by the power isolator 104. Therefore, the first controller 108 that controls the power isolator 104 is closed, the second controller 109 of the first battery 101 is closed, and the third controller 110 of the second battery 102 is disconnected.

At this time, the first battery 101 is connected to the first load 106, and the first battery 101 is connected to the second load 107 through the power isolator 104, the first battery 101 is used to power the first load 106, and the first battery 101 is used to power the second load 107 through the power isolator 104.

In some embodiments, step 1033 specifically includes:

Step 10332, in response to the first battery status being the first battery abnormality, control the first controller to close, the third controller to close, and the second controller to disconnect, so that the second battery is connected to the first load through the power isolator, the second battery is connected to the second load, and the second battery is used to power the first load and the second load.

In a specific implementation, the first battery status of the first battery 101 is determined by the first battery management system 111. When the first battery status is determined to be abnormal, it means that the first battery 101 cannot supply power to the first load 106 and the second load 107, and the second battery 102 is required to supply power to the first load 106 and the second load 107.

When the second battery 102 supplies power to the first load 106, it needs to be supplied through the power isolator 104. Therefore, the first controller 108 controlling the power isolator 104 is closed, the third controller 110 of the second battery 102 is closed, and the second controller 109 of the first battery 101 is disconnected, so that the second battery 102 is connected to the first load 106 through the power isolator 104, and the second battery 102 is connected to the second load 107. The second battery 102 is used to supply power to the first load 106 through the power isolator 104, and the second battery 102 is used to supply power to the second load 107.

In some embodiments, the first battery abnormality includes insufficient power of the first battery, and step 10332 specifically includes:

Step 103321, in response to the first battery abnormality being insufficient power of the first battery, obtaining a first power of the first battery, a second power of the second battery, and a vehicle status;

Step 103322, determine that the vehicle is in a powered-on state and the first power is equal to the second power, control the first controller to be closed, the second controller to be closed, and the third controller to be disconnected, so that the first battery is connected to the first load, and the first battery is connected to the second load through the power isolator, and the first battery is used to power the first load and the second load.

In specific implementation, the abnormality of the first battery 101 specifically includes insufficient power of the first battery 101 and a failure of the first battery 101. When it is determined that the abnormality of the first battery 101 is insufficient power of the first battery 101, the first battery 101 and the second battery 102 are charged through the power converter 103. At this time, since the first battery 101 has less power, the charging speed of the first battery 101 is faster than that of the second battery 102.

A first power level of the first battery 101 , a second power level of the second battery 102 , and a vehicle status are obtained, wherein the first power level can be determined by a first battery management system 111 , and the second power level can be determined by a second battery management system 112 .

The first power level and the second power level are compared. When it is determined that the vehicle is in the powered-on state and the first power level is equal to the second power level, there is no need to continue using the second battery 102 to power the first load 106 and the second load 107.

The first controller 108 is controlled to be closed, the second controller 109 is controlled to be closed, and the third controller 110 is controlled to be opened, so that the first battery 101 is connected to the first load 106, and the first battery 101 is connected to the second load 107 through the power isolator 104, and the first battery 101 is used to power the first load 106 and the second load 107.

In some embodiments, the category of the abnormality of the first battery 101 is determined by acquiring battery information of the first battery 101 , wherein the battery information includes a battery voltage or a battery current.

Exemplarily, the battery voltage of the first battery 101 is obtained, and it is determined that the battery voltage is less than a preset normal voltage and greater than a preset fault voltage. At this time, the abnormality of the first battery 101 is insufficient power of the first battery 101. It is determined that the battery voltage is less than the preset fault voltage. At this time, the abnormality of the first battery 101 is a fault of the first battery 101.

In another example, the battery current of the first battery 101 is obtained, and it is determined that the battery current is less than a preset normal current and greater than a preset fault current. At this time, the abnormality of the first battery 101 is insufficient power of the first battery 101. It is determined that the battery current is less than the preset fault current. At this time, the abnormality of the first battery 101 is a fault of the first battery 101.

In some embodiments, after step 103321, the method further includes:

Step 10332A, determining that the vehicle is in a power-off state and the first power level is not equal to the second power level, and controlling the power converter to stop charging the first battery and the second battery;

Step 10332B, keep the first controller closed and the third controller closed, and the second controller open, so that the second battery is connected to the first load through the power isolator, and the second battery is connected to the second load, and the second battery is used to power the first load and the second load.

In a specific implementation, when the power of the first battery 101 is insufficient, after the first battery 101 and the second battery 102 are charged by the power converter 103, if it is detected that the vehicle is powered off, and at this time the first power of the first battery 101 is still not equal to the second power of the second battery 102, the power converter is controlled to power off and stop charging the first battery 101 and the second battery 102.

At this time, the second battery 102 is still needed to power the first load 106 and the second load 107. Therefore, the first controller 108 and the third controller 110 are kept closed, and the second controller 109 is disconnected, so that the second battery 102 is connected to the first load 106 through the power isolator 104, and the second battery 102 is connected to the second load 107, and the second battery 102 is used to power the first load 106 and the second load 107.

In some embodiments, when it is determined that the first battery abnormality is a failure of the first battery 101, the power converter is also in an abnormal state at this time, so the second battery 102 needs to be used to power the first load 106 and the second load 107. The first controller 108 is controlled to be closed, the third controller 110 is controlled to be closed, and the second controller 109 is controlled to be disconnected, so that the second battery 102 is connected to the first load 106 through the power isolator 104, the second battery 102 is connected to the second load 107, and the second battery 102 is used to power the first load 106 and the second load 107.

In some embodiments, the power converter abnormality includes a power converter failure, and step 1032 specifically includes:

Step 10321, in response to the power converter abnormality being a power converter failure, and the second working state being that the power isolator is normal, control the second controller and the third controller to be closed and the first controller to be disconnected, so that the first battery is connected to the first load, and the first battery is used to power the first load, and the second battery is connected to the second load, and the second battery is used to power the second load.

In specific implementation, the abnormality of the power converter 103 can be divided into a failure of the power converter 103 and insufficient power supply of the power converter. When it is determined that the abnormality of the power converter 103 is a failure of the power converter 103, and the second working state of the power isolator 104 is that the power isolator 104 is normal, the power converter 103 cannot supply power to the first battery 101 and the second battery 102.

At this time, the second controller 109 and the third controller 110 are controlled to be closed and the first controller 108 is disconnected, so that the first battery 101 is connected to the first load 106, and the first battery 101 is used to power the first load 106, and the second battery 102 is connected to the second load 107, and the second battery 102 is used to power the second load 107.

Through the above scheme, when the power converter 103 fails, the first load 106 is powered by the first battery 101, and the second load 107 is powered by the second battery 102, thereby avoiding using the same battery to power the first load 106 and the second load 107, causing a rapid loss of battery power, and extending the power supply time.

In some embodiments, when it is determined that the power converter 103 is abnormal due to insufficient power supply of the power converter 103, the first controller 108 is controlled to be closed, the second controller 109 is controlled to be closed, and the third controller 110 is controlled to be disconnected, so that the first battery 101 is connected to the first load 106, and the first battery 101 is connected to the second load 107 through the power isolator 104, and the first battery 101 is used to power the first load 106 and the second load 107.

In some embodiments, the method further comprises:

Step 104, determining that the vehicle is in a power-off state, and controlling the power converter to stop charging the first battery and the second battery;

Step 105, controlling the first controller to close, the second controller to close, and the third controller to open, so that the first battery is connected to the first load, and the first battery is connected to the second load through the power isolator, and the first battery is used to power the first load and the second load.

In a specific implementation, when the power converter 103 and the power isolator 104 are both operating normally, after the vehicle is powered off, the power converter is controlled to be powered off, and charging of the first battery 101 and the second battery 102 is stopped.

At this time, in order to ensure the normal consumption of the vehicle load, the first controller 108 is controlled to be closed, the second controller 109 is controlled to be closed, and the third controller 110 is controlled to be disconnected, so that the first battery 101 is connected to the first load 106, and the first battery 101 is connected to the second load 107 through the power isolator 104, and the first battery 101 is used to power the first load 106 and the second load 107.

In some embodiments, after step 104, the method further includes:

Step 10a, obtaining a first voltage of the first battery and a second voltage of the second battery;

Step 10b, in response to the difference between the first voltage and the second voltage being greater than a preset difference, controlling the first controller to disconnect, and controlling the power converter to charge the first battery and the second battery for a preset time period respectively.

In a specific implementation, the power isolator 104 is connected to the first battery management system 111 and the second battery management system 112 respectively, and the first voltage of the first battery 101 and the second voltage of the second battery 102 are detected by the power isolator 104, and the difference between the first voltage and the second voltage is determined.

When the difference is greater than the preset difference, the first battery 101 and the second battery 102 are in an unbalanced state, and the first controller 108 is disconnected and the power converter 103 is powered on to charge the first battery 101 and the second battery 102 for a preset time period.

In some embodiments, after controlling the power converter 103 to charge the first battery 101 and the second battery 102 for a preset time length respectively, after a second preset time, a new first voltage and a new second voltage are obtained again, and the new first voltage and the new second voltage are compared again.

When the difference is greater than the preset difference, the power converter 103 is controlled again to charge the first battery 101 and the second battery 102 for a preset time length until the difference between the new first voltage and the new second voltage is less than or equal to the preset difference, and the voltage acquisition operation is stopped. At this time, it indicates that the first battery 101 and the second battery 102 are balanced.

It should be noted that the method of the embodiment of the present disclosure can be performed by a single device, such as a computer or a server. The method of the present embodiment can also be applied in a distributed scenario and completed by multiple devices cooperating with each other. In the case of such a distributed scenario, one of the multiple devices can only perform one or more steps in the method of the embodiment of the present disclosure, and the multiple devices will interact with each other to complete the described method.

It should be noted that some embodiments of the present disclosure are described above. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the above embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

Based on the same inventive concept, the present disclosure provides a vehicle battery control system, and applies the vehicle battery control method.

The vehicle battery control system 100 includes a first battery 101, a second battery 102, a power converter 103, a power isolator 104 and a processor 105. The first battery 101 is connected to a first load 106, and the second battery 102 is connected to a second load 107. The power isolator 104 is connected to the first battery 101 and the second battery 102, respectively, and the power isolator 104 is also connected to the first load 106 and the second load 107. The power isolator 104 can monitor the voltage, current and temperature of the low-voltage power supply circuit. The first battery 101 can supply power to the power isolator 104 and the first load 106, and the second battery 102 can supply power to the power isolator 104 and the second load 107.

In this embodiment, the first battery 101 and the second battery 102 are preferably 12V lithium batteries, and the power converter is preferably a DC/DC converter.

By providing a power isolator 104 connected to the first battery 101 and the second battery 102 respectively, it is avoided that the first battery 101 is directly connected to the second battery 102, and when the power difference between the first battery 101 and the second battery 102 is large, the battery with higher power charges the battery with lower power, thereby ensuring the normal operation of the vehicle and the service life of the two batteries.

The processor 105 is respectively connected to the power converter 103, the power isolator 104, the first battery 101 and the second battery 102, and the processor 105 controls at least one of the first battery 101, the second battery 102 and the power converter 103 to supply power to the first load 106 and/or the second load 107.

In some embodiments, the vehicle battery control system 100 further includes a first controller 108 connected to the processor 105, a second controller 109 connected to the processor 105, and a third controller 110 connected to the processor 105. The first controller 108 is disposed on the power isolator 104, the second controller 109 is disposed on the first battery 101, and the third controller 110 is disposed on the second battery 102.

The processor 105 controls the first controller 108 to turn on and off the power isolator 104 , controls the second controller 109 to turn on and off the first battery 101 , and controls the third controller 110 to turn on and off the second battery 102 .

In some embodiments, the system further comprises:

The first battery management system 111 and the second battery management system 112 are configured to detect a first battery state of the first battery 101 and a second battery management system 112 is configured to detect a second battery state of the second battery 102.

Specifically, the working state of the first battery 101 is detected by the first battery management system 111, a first battery state is obtained, and the first battery state is sent to the processor 105. The working state of the second battery 102 is detected by the second battery management system 112, a second battery state is obtained, and the second battery state is sent to the processor 105.

Based on the same inventive concept, corresponding to any of the above-mentioned embodiments and methods, the present disclosure also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the vehicle battery control method described in any of the above embodiments is implemented.

2 shows a more specific schematic diagram of the hardware structure of an electronic device provided in this embodiment, and the device may include: a processor 1010, a memory 1020, an input/output interface 1030, a communication interface 1040, and a bus 1050. The processor 1010, the memory 1020, the input/output interface 1030, and the communication interface 1040 are connected to each other in communication within the device through the bus 1050.

The processor 1010 can be implemented by a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of this specification.

The memory 1020 may be implemented in the form of ROM (Read Only Memory), RAM (Random Access Memory), static storage device, dynamic storage device, etc. The memory 1020 may store an operating system and other application programs. When the technical solutions provided in the embodiments of this specification are implemented by software or firmware, the relevant program codes are stored in the memory 1020 and are called and executed by the processor 1010.

The input/output interface 1030 is used to connect the input/output module to realize information input and output. The input/output module can be configured in the device as a component (not shown in the figure), or it can be externally connected to the device to provide corresponding functions. The input device may include a keyboard, a mouse, a touch screen, a microphone, various sensors, etc., and the output device may include a display, a speaker, a vibrator, an indicator light, etc.

The communication interface 1040 is used to connect a communication module (not shown) to realize communication interaction between the device and other devices. The communication module can realize communication through a wired mode (such as USB, network cable, etc.) or a wireless mode (such as mobile network, WIFI, Bluetooth, etc.).

The bus 1050 includes a path that transmits information between the various components of the device (eg, the processor 1010, the memory 1020, the input/output interface 1030, and the communication interface 1040).

It should be noted that, although the above device only shows the processor 1010, the memory 1020, the input/output interface 1030, the communication interface 1040 and the bus 1050, in the specific implementation process, the device may also include other components necessary for normal operation. In addition, it can be understood by those skilled in the art that the above device may also only include the components necessary for implementing the embodiments of the present specification, and does not necessarily include all the components shown in the figure.

The electronic device of the above-mentioned embodiment is used to implement the corresponding vehicle battery control method in any of the above-mentioned embodiments, and has the beneficial effects of the corresponding method embodiment, which will not be repeated here.

Based on the same inventive concept, corresponding to any of the above-mentioned embodiment methods, the present disclosure also provides a non-transitory computer-readable storage medium, wherein the non-transitory computer-readable storage medium stores computer instructions, and the computer instructions are used to enable the computer to execute the vehicle battery control method described in any of the above embodiments.

The computer-readable medium of this embodiment includes permanent and non-permanent, removable and non-removable media, and information storage can be implemented by any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, read-only compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device.

The computer instructions stored in the storage medium of the above embodiments are used to enable the computer to execute the vehicle battery control method described in any of the above embodiments, and have the beneficial effects of the corresponding method embodiments, which will not be repeated here.

Based on the same inventive concept, corresponding to any of the above-mentioned embodiments and methods, the present application also provides a vehicle, including the in-vehicle voice interaction device in the above-mentioned embodiments, the electronic device in the above-mentioned embodiments, and the computer-readable storage medium in the above-mentioned embodiments, and the vehicle equipment implements the vehicle battery control method described in any of the above embodiments.

The vehicle of the above-mentioned embodiment is used to implement the vehicle battery control method described in any of the above-mentioned embodiments, and has the beneficial effects of the corresponding method embodiments, which will not be repeated here.

Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present disclosure (including the claims) is limited to these examples. Based on the concept of the present disclosure, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present disclosure as described above, which are not provided in detail for the sake of simplicity.

In addition, to simplify the description and discussion, and in order not to make the embodiments of the present disclosure difficult to understand, the known power/ground connections to the integrated circuit (IC) chips and other components may or may not be shown in the provided figures. In addition, the device can be shown in the form of a block diagram to avoid making the embodiments of the present disclosure difficult to understand, and this also takes into account the fact that the details of the implementation of these block diagram devices are highly dependent on the platform on which the embodiments of the present disclosure will be implemented (that is, these details should be fully within the scope of understanding of those skilled in the art). Where specific details (e.g., circuits) are set forth to describe exemplary embodiments of the present disclosure, it is apparent to those skilled in the art that the embodiments of the present disclosure can be implemented without these specific details or with changes in these specific details. Therefore, these descriptions should be considered illustrative rather than restrictive.

Although the present disclosure has been described in conjunction with specific embodiments of the present disclosure, many replacements, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may use the embodiments discussed.

The embodiments of the present disclosure are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present disclosure should be included in the scope of protection of the present disclosure.

Claims (14)

1. A vehicle battery control method is characterized by being applied to a vehicle battery control system, wherein the vehicle battery control system comprises a first battery connected with a first load, a second battery connected with a second load, a power converter respectively connected with the first battery and the second battery, a processor and a power isolator respectively connected with the power converter, the power isolator, the first battery and the second battery, the power isolator is respectively connected with the first battery and the second battery and is connected with the first load and the second load,

The method comprises the following steps:

The processor controls the power converter to supply power for the first battery and the second battery, and the first battery and the second battery are utilized to supply power for the first load and the second load through the power isolator; or alternatively

The processor controls the first battery to supply power to the first load and controls the second battery to supply power to the second load; or alternatively

The processor controls the first battery or the second battery to supply power to the first load and the second load.

2. The method of claim 1, wherein the vehicle battery control system further comprises a first controller disposed on the power isolator and coupled to the processor, a second controller disposed on the first battery and coupled to the processor, and a third controller disposed on the second battery and coupled to the processor,

The processor controls the power converter to supply power to the first battery and the second battery, and the first battery and the second battery are utilized to supply power to the first load and the second load through the power isolator, and the processor comprises:

acquiring a first working state of the power supply converter and a second working state of the power supply isolator;

Responding to the first working state that the power supply converter is normal and the second working state that the power supply isolator is normal, and controlling the first controller to be closed;

controlling a second controller to be closed, so that the power converter, the first battery, the power isolator and the first load are conducted, the power converter is used for supplying power to the first load, the power converter, the first battery, the power isolator and the second load are conducted, and the power converter is used for supplying power to the second load; or alternatively

And controlling the third controller to be closed, so that the power converter, the second battery, the power isolator and the first load are conducted, the power converter is used for supplying power to the first load, and the power converter, the second battery, the power isolator and the second load are conducted, and the power converter is used for supplying power to the second load.

3. The method of claim 2, wherein the processor controlling the first battery to power the first load and controlling the second battery to power a second load comprises:

acquiring a first working state of the power supply converter and a second working state of the power supply isolator;

And responding to the second working state as abnormal of the power isolator, controlling the first controller to be opened, controlling the second controller to be closed and controlling the third controller to be closed, so that the first battery is conducted with the first load, the first battery is used for supplying power to the first load, the second battery is conducted with the second load, and the second battery is used for supplying power to the second load.

4. The method of claim 2, wherein the processor controlling the first battery or the second battery to power the first load and the second load comprises:

acquiring a first working state of the power supply converter and a second working state of the power supply isolator;

responding to the first working state as abnormal of the power supply converter, and the second working state as normal of the power supply isolator, and obtaining a first battery state of the first battery;

And controlling the first battery or the second battery to supply power to the first load and the second load according to the first battery state.

5. The method of claim 4, wherein controlling the first battery or the second battery to power the first load and the second load according to the first battery state comprises:

And responding to the first battery state that the first battery is normal, controlling the first controller to be closed, controlling the second controller to be closed and controlling the third controller to be opened, so that the first battery is conducted with the first load, and the first battery is conducted with the second load through the power isolator, and supplying power to the first load and the second load by using the first battery.

6. The method of claim 4, wherein controlling the first battery or the second battery to power the first load and the second load according to the first battery state comprises:

And responding to the first battery state as the first battery abnormality, controlling the first controller to be closed, controlling the third controller to be closed and controlling the second controller to be opened, so that the second battery is conducted with the first load through the power isolator, the second battery is conducted with the second load, and the second battery is utilized to supply power for the first load and the second load.

7. The method of claim 6, wherein the first battery anomaly comprises the first battery being undercharged,

After responding to the first battery state as the first battery abnormality, the method further comprises:

Responding to the first battery abnormality as the first battery electric quantity shortage, and acquiring the first electric quantity of the first battery, the second electric quantity of the second battery and the vehicle state;

And determining that the vehicle state is in a power-on state, the first electric quantity is equal to the second electric quantity, and controlling the first controller to be closed, the second controller to be closed and the third controller to be opened so that the first battery is conducted with the first load, the first battery is conducted with the second load through the power isolator, and the first battery is utilized to supply power for the first load and the second load.

8. The method of claim 7, further comprising, after acquiring the first charge of the first battery, the second charge of the second battery, and the vehicle state:

determining that the vehicle is in a power-down state and the first electric quantity is not equal to the second electric quantity, and controlling a power converter to stop charging the first battery and the second battery;

And keeping the first controller and the third controller closed, and the second controller is opened, so that the second battery is conducted with the first load through the power isolator, and the second battery is conducted with the second load, and the second battery is used for supplying power to the first load and the second load.

9. The method of claim 4, wherein the power converter anomaly comprises a power converter failure,

The responding to the first working state being abnormal of the power supply converter and the second working state being normal of the power supply isolator comprises the following steps:

And responding to the power converter abnormality as a power converter fault, controlling the second controller to be closed, controlling the third controller to be closed and controlling the first controller to be opened so that the first battery is conducted with the first load, supplying power to the first load by using the first battery, and controlling the second battery to be conducted with the second load, and supplying power to the second load by using the second battery.

10. The method according to claim 1, wherein the method further comprises:

Determining that the vehicle is in a power-down state, and controlling a power converter to stop charging the first battery and the second battery;

And controlling the first controller to be closed, the second controller to be closed and the third controller to be opened, so that the first battery is conducted with the first load, the first battery is conducted with the second load through the power isolator, and the first battery is utilized to supply power for the first load and the second load.

11. The method of claim 10, further comprising, after determining that the vehicle is in the powered down state:

Acquiring a first voltage of a first battery and a second voltage of a second battery;

And controlling the first controller to be disconnected in response to the difference between the first voltage and the second voltage being larger than a preset difference, and controlling the power converter to charge the first battery and the second battery for a preset time length respectively.

12. A vehicle battery control system, characterized by comprising:

a first battery connected to the first load;

a second battery connected to the second load;

The power converter is respectively connected with the first battery and the second battery;

The power isolator is connected with the first battery and the second battery respectively and connected with a first load and a second load;

And the processor is respectively connected with the power converter, the power isolator, the first battery and the second battery and is configured to control at least one of the first battery, the second battery and the power converter to supply power for the first load and/or the second load.

13. The system of claim 12, further comprising:

The first controller is arranged on the power isolator and connected with the processor, and the processor controls the first controller to realize the on-off of the power isolator;

The second controller is arranged on the first battery and connected with the processor, and the processor controls the second controller to realize the on-off of the first battery;

and the third controller is arranged on the second battery and is connected with the processor, and the processor controls the third controller to realize the on-off of the second battery.

14. A vehicle comprising a vehicle battery control system according to any one of claims 12-13.