CN116707062A - Overheat protection method and device for internal transistor of vehicle-mounted storage battery - Google Patents

Overheat protection method and device for internal transistor of vehicle-mounted storage battery Download PDF

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Publication number
CN116707062A
CN116707062A CN202310369967.6A CN202310369967A CN116707062A CN 116707062 A CN116707062 A CN 116707062A CN 202310369967 A CN202310369967 A CN 202310369967A CN 116707062 A CN116707062 A CN 116707062A
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China
Prior art keywords
vehicle
storage battery
mounted storage
temperature
real
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Chinese (zh)
Inventor
胡海波
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Shanghai Ideal Automobile Technology Co ltd
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Shanghai Ideal Automobile Technology Co ltd
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Priority to CN202310369967.6A priority Critical patent/CN116707062A/en
Publication of CN116707062A publication Critical patent/CN116707062A/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
    • H02J7/007192—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H01M10/443—Methods for charging or discharging in response to temperature
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
    • H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00309—Overheat or overtemperature protection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The application provides an overheat protection method and device for an internal transistor of a vehicle-mounted storage battery, wherein the method comprises the following steps: monitoring a first real-time temperature of an internal transistor of the vehicle-mounted storage battery in the process of charging the vehicle-mounted storage battery; and in response to the first real-time temperature being greater than or equal to a first set temperature threshold, reducing the current charging current of the vehicle-mounted storage battery to reduce the internal transistor of the vehicle-mounted storage battery to a target temperature. According to the application, the timeliness of the real-time temperature adjustment of the internal transistor is improved, the complicated operation degree of the real-time temperature adjustment of the internal transistor is weakened, the probability of damage of the internal transistor due to overhigh temperature is reduced, the service life of the internal transistor is prolonged, and the real-time temperature adjustment method of the internal transistor is simplified.

Description

Overheat protection method and device for internal transistor of vehicle-mounted storage battery
Technical Field
The application relates to the field of vehicle control, in particular to the field of intelligent automobiles such as modern sensing, information fusion and the like.
Background
In the implementation, the 12V lithium battery of the vehicle can be turned off and communicated with an external circuit through an MOS switch, and when the electric quantity of the 12V lithium battery is low, the vehicle needs to charge the 12V lithium battery.
Under this scene, the difference of the residual capacity of 12V lithium cell, its corresponding charge capacity is different, and then leads to the overcurrent of the MOS switch of 12V lithium cell different, and then leads to the temperature difference of the MOS switch under the different overcurrent for the MOS switch has the risk of high temperature.
In the related art, the internal resistance of the MOS switch can be reduced, so that the heating value of the overcurrent of the MOS switch is reduced, the purpose of adjusting the temperature of the MOS switch is achieved, and the operation is complicated.
Disclosure of Invention
The present application aims to solve at least one of the technical problems in the related art to some extent.
To this end, a first aspect of the application proposes a method for overheat protection of an internal transistor of a vehicle-mounted battery.
The second aspect of the application also provides an overheat protection device for an internal transistor of a vehicle-mounted storage battery.
A third aspect of the application proposes an electronic device.
A fourth aspect of the present application is directed to a computer-readable storage medium.
A fifth aspect of the application proposes a vehicle.
The first aspect of the present application provides a method for overheat protection of an internal transistor of a vehicle-mounted storage battery, the method comprising: monitoring a first real-time temperature of an internal transistor of the vehicle-mounted storage battery in the process of charging the vehicle-mounted storage battery; and in response to the first real-time temperature being greater than or equal to a first set temperature threshold, reducing the current charging current of the vehicle-mounted storage battery to reduce the internal transistor of the vehicle-mounted storage battery to a target temperature.
In addition, the overheat protection method for the internal transistor of the vehicle-mounted storage battery provided by the first aspect of the present application may further have the following additional technical features:
according to one embodiment of the present application, reducing the present charge current of the in-vehicle battery to reduce the internal transistor of the in-vehicle battery to a target temperature in response to the first real-time temperature being greater than or equal to a first set temperature threshold, comprises: responding to the fact that the first real-time temperature is greater than or equal to a first set temperature threshold value, acquiring current state information of the vehicle-mounted storage battery, and determining the current residual electric quantity of the vehicle-mounted storage battery according to the state information; determining an expected charging current of the vehicle-mounted storage battery according to the residual electric quantity and the first real-time temperature; a first request is generated based on the desired charging current, and the present charging current of the in-vehicle battery is reduced based on the first request to reduce the internal transistor of the in-vehicle battery to a target temperature.
According to one embodiment of the present application, determining a desired charging current of an on-board battery based on a remaining power and a first real-time temperature includes:
acquiring the current charging current of the vehicle-mounted storage battery according to the residual electric quantity and the first real-time temperature; acquiring a temperature difference between the first real-time temperature and the target temperature; obtaining a charging current adjustment value of the vehicle-mounted storage battery according to the temperature difference value and the resistance of an internal transistor of the vehicle-mounted storage battery; and determining the expected charging current of the vehicle-mounted storage battery according to the current charging current and the charging current adjustment value.
According to one embodiment of the present application, generating a first request based on a desired charging current and reducing a present charging current of an in-vehicle battery based on the first request to reduce an internal transistor of the in-vehicle battery to a target temperature, includes: the first request is sent to the overall vehicle controller VCU, and the current charging current of the vehicle-mounted storage battery is reduced by the VCU based on the first request so as to reduce the internal transistor of the vehicle-mounted storage battery to a target temperature.
According to one embodiment of the application, the method further comprises: identifying whether the vehicle-mounted storage battery meets the over-temperature stop charging protection condition according to the first real-time temperature; and determining that the vehicle-mounted storage battery meets the over-temperature stop-charge protection condition in response to the fact that the first real-time temperature is greater than or equal to the second set temperature threshold.
According to one embodiment of the application, the method further comprises: responding to the fact that the vehicle-mounted storage battery meets the over-temperature stop-charge protection condition, and executing an over-temperature stop-charge protection strategy of the vehicle-mounted storage battery; monitoring a second real-time temperature of the vehicle-mounted storage battery after the overtemperature stop charging protection strategy is executed; and stopping the execution of the over-temperature stop-and-shoot protection strategy and restarting the execution of the charging operation of the vehicle-mounted storage battery in response to the second real-time temperature being less than or equal to a preset recovery charging temperature threshold.
According to one embodiment of the application, in response to an over-temperature stop-charge protection condition being met for an on-board battery, an over-temperature stop-charge protection strategy for the on-board battery is executed, comprising: and sending a second request for requesting to execute the over-temperature stop charging protection strategy of the vehicle-mounted storage battery to the VCU, wherein the second request is used for adjusting the charging current provided by the vehicle-mounted voltage transformation unit DCDC for the vehicle-mounted storage battery to zero.
According to one embodiment of the application, in response to an over-temperature stop-charge protection condition being met for an on-board battery, an over-temperature stop-charge protection strategy for the on-board battery is executed, comprising: and sending a second request for requesting to execute the over-temperature stop charging protection strategy of the vehicle-mounted storage battery to the VCU, wherein the second request is used for adjusting the charging voltage provided by the vehicle-mounted voltage transformation unit DCDC for the vehicle-mounted storage battery to the current charging voltage of the vehicle-mounted storage battery.
The second aspect of the present application also proposes an overheat protection device for an internal transistor of a vehicle-mounted storage battery, the device comprising: the monitoring module is used for monitoring the first real-time temperature of the internal transistor of the vehicle-mounted storage battery in the charging process of the vehicle-mounted storage battery; and the adjusting module is used for responding to the fact that the first real-time temperature is greater than or equal to a first set temperature threshold value, reducing the current charging current of the vehicle-mounted storage battery so as to reduce the internal transistor of the vehicle-mounted storage battery to the target temperature.
In addition, the overheat protection device for the internal transistor of the vehicle-mounted storage battery according to the second aspect of the present application may further have the following additional technical features:
according to one embodiment of the application, the adjustment module is further configured to: responding to the fact that the first real-time temperature is greater than or equal to a first set temperature threshold value, acquiring current state information of the vehicle-mounted storage battery, and determining the current residual electric quantity of the vehicle-mounted storage battery according to the state information; determining an expected charging current of the vehicle-mounted storage battery according to the residual electric quantity and the first real-time temperature; a first request is generated based on the desired charging current, and the present charging current of the in-vehicle battery is reduced based on the first request to reduce the internal transistor of the in-vehicle battery to a target temperature.
According to one embodiment of the application, the adjustment module is further configured to: acquiring the current charging current of the vehicle-mounted storage battery according to the residual electric quantity and the first real-time temperature; acquiring a temperature difference between the first real-time temperature and the target temperature; obtaining a charging current adjustment value of the vehicle-mounted storage battery according to the temperature difference value and the resistance of an internal transistor of the vehicle-mounted storage battery; and determining the expected charging current of the vehicle-mounted storage battery according to the current charging current and the charging current adjustment value.
According to one embodiment of the application, the adjustment module is further configured to: the first request is sent to the overall vehicle controller VCU, and the current charging current of the vehicle-mounted storage battery is reduced by the VCU based on the first request so as to reduce the internal transistor of the vehicle-mounted storage battery to a target temperature.
According to one embodiment of the application, the adjustment module is further configured to: identifying whether the vehicle-mounted storage battery meets the over-temperature stop charging protection condition according to the first real-time temperature; and determining that the vehicle-mounted storage battery meets the over-temperature stop-charge protection condition in response to the fact that the first real-time temperature is greater than or equal to the second set temperature threshold.
According to one embodiment of the application, the adjustment module is further configured to: responding to the fact that the vehicle-mounted storage battery meets the over-temperature stop-charge protection condition, and executing an over-temperature stop-charge protection strategy of the vehicle-mounted storage battery; monitoring a second real-time temperature of the vehicle-mounted storage battery after the overtemperature stop charging protection strategy is executed; and stopping the execution of the over-temperature stop-and-shoot protection strategy and restarting the execution of the charging operation of the vehicle-mounted storage battery in response to the second real-time temperature being less than or equal to a preset recovery charging temperature threshold.
According to one embodiment of the application, the adjustment module is further configured to: and sending a second request for requesting to execute the over-temperature stop charging protection strategy of the vehicle-mounted storage battery to the VCU, wherein the second request is used for adjusting the charging current provided by the vehicle-mounted voltage transformation unit DCDC for the vehicle-mounted storage battery to zero.
According to one embodiment of the application, the adjustment module is further configured to: and sending a second request for requesting to execute the over-temperature stop charging protection strategy of the vehicle-mounted storage battery to the VCU, wherein the second request is used for adjusting the charging voltage provided by the vehicle-mounted voltage transformation unit DCDC for the vehicle-mounted storage battery to the current charging voltage of the vehicle-mounted storage battery.
A third aspect of the present application provides an electronic device, including a memory, a processor; wherein the processor executes a program corresponding to the executable program code by reading the executable program code stored in the memory, for implementing the overheat protection method for the internal transistor of the vehicle-mounted storage battery set forth in the first aspect.
A fourth aspect of the present application proposes a computer-readable storage medium on which a computer program is stored, characterized in that the program, when executed by a processor, implements the overheat protection method for the internal transistor of the vehicle-mounted battery proposed in the first aspect described above.
A fifth aspect of the application proposes a vehicle comprising an overheat protection device for an internal transistor of an in-vehicle battery as proposed in the second aspect above.
According to the overheat protection method and device for the internal transistor of the vehicle-mounted storage battery, the first real-time temperature of the internal transistor of the vehicle-mounted storage battery is monitored in the charging process of the vehicle-mounted storage battery, and when the first real-time temperature is greater than or equal to the first set temperature threshold value, the current charging current of the vehicle-mounted storage battery is reduced so as to reduce the internal transistor of the vehicle-mounted storage battery to the target temperature. According to the application, the current charging current of the vehicle-mounted storage battery is timely adjusted by monitoring the first real-time temperature of the internal transistor of the vehicle-mounted storage battery, so that the timeliness of the real-time temperature adjustment of the internal transistor is improved, the complicated operation degree of the real-time temperature adjustment of the internal transistor is weakened, the damage probability of the internal transistor due to overhigh temperature is reduced, the service life of the internal transistor is prolonged, and the real-time temperature adjustment method of the internal transistor is simplified.
It should be understood that the description herein is not intended to identify key or critical features of the embodiments of the application or to delineate the scope of the application. Other features of the present application will become apparent from the description that follows.
Drawings
The foregoing and/or additional aspects and advantages of the application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
fig. 1 is a schematic flow chart of a overheat protection method of an internal transistor of a vehicle-mounted storage battery according to an embodiment of the present application;
fig. 2 is a schematic flow chart of a overheat protection method of an internal transistor of a vehicle-mounted storage battery according to another embodiment of the present application;
fig. 3 is a schematic flow chart of a overheat protection method of an internal transistor of an in-vehicle battery according to another embodiment of the present application;
fig. 4 is a schematic flow chart of a overheat protection method of an internal transistor of a vehicle-mounted storage battery according to another embodiment of the present application;
fig. 5 is a schematic flow chart of a overheat protection method of an internal transistor of an in-vehicle battery according to another embodiment of the present application;
fig. 6 is a schematic structural diagram of an overheat protection device for an internal transistor of a vehicle-mounted storage battery according to an embodiment of the present application;
Fig. 7 is a schematic structural diagram of an electronic device according to an embodiment of the application.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present application and should not be construed as limiting the application.
The following describes an overheat protection method, an overheat protection device, an electronic device, and a storage medium for an internal transistor of a vehicle-mounted storage battery according to embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic flow chart of a overheat protection method of an internal transistor of a vehicle-mounted storage battery according to an embodiment of the present application, as shown in fig. 1, the method includes:
s101, monitoring a first real-time temperature of a transistor in the vehicle-mounted storage battery during the process of charging the vehicle-mounted storage battery.
In implementation, when the charging requirement exists for the vehicle-mounted storage battery, the vehicle-mounted storage battery can be charged through a vehicle-mounted voltage transformation unit (DCDC) of the vehicle.
In the embodiment of the application, the residual electric quantity of the vehicle-mounted storage battery and the charging capacity of the vehicle-mounted storage battery have a certain degree of association, and correspondingly, the charging capacity of the vehicle-mounted storage battery and the temperature of the transistor in the vehicle-mounted storage battery have a certain degree of association.
In some implementations, the current may generate a certain amount of heat energy when flowing through the internal transistor, so that the temperature of the internal transistor is increased, in order to reduce the probability of damage to the internal transistor due to the increase of the temperature, during the charging process of the vehicle-mounted storage battery, the real-time temperature of the internal transistor of the vehicle-mounted storage battery needs to be monitored, and the monitored real-time temperature is determined as the first real-time temperature of the internal transistor of the vehicle-mounted storage battery.
Alternatively, the first real-time temperature of the internal transistor of the on-board battery during charging may be monitored by a battery detection unit (LBMS) provided in the vehicle.
S102, in response to the first real-time temperature being greater than or equal to a first set temperature threshold, reducing the current charging current of the vehicle-mounted storage battery so as to reduce the internal transistor of the vehicle-mounted storage battery to a target temperature.
In the embodiment of the application, the temperature of the internal transistor of the vehicle-mounted storage battery has a corresponding set temperature threshold, wherein the temperature threshold can be identified as the first set temperature threshold of the internal transistor of the vehicle-mounted storage battery.
Alternatively, when it is detected that the first real-time temperature of the internal transistor of the in-vehicle battery is greater than or equal to the first set temperature threshold, it may be determined that there is a risk that the internal transistor of the current in-vehicle battery is too hot.
In this scenario, the purpose of reducing the real-time temperature of the internal transistor of the vehicle-mounted battery can be achieved by reducing the present charging current of the vehicle-mounted battery.
The internal transistor of the vehicle-mounted storage battery has a corresponding temperature upper limit value, and it is understood that when the real-time temperature of the internal transistor is less than or equal to the temperature upper limit value, the internal transistor of the vehicle-mounted storage battery does not have a risk of overhigh temperature.
In this scenario, the temperature to be reached by the internal transistor of the vehicle-mounted battery may be determined from a range of values lower than the upper limit value of the temperature, as the target temperature of the internal transistor, and by reducing the current charging current of the vehicle-mounted battery, the real-time temperature of the internal transistor of the vehicle-mounted battery is reduced to the target temperature.
In a scenario in which real-time temperature detection of an internal transistor of a vehicle-mounted battery is performed by the LBMS, the LBMS may send a request for reducing a current charging current of the vehicle-mounted battery to a control system of the vehicle when detecting that the first real-time temperature of the internal transistor is greater than or equal to a first set temperature threshold, and the control system of the vehicle may reduce the current charging current of the vehicle-mounted battery through the received request.
The control system of the vehicle may be a Vehicle Control Unit (VCU).
As shown in fig. 2, the DCDC may charge the vehicle-mounted battery, the LBMS inside the vehicle-mounted battery monitors the first real-time temperature of the internal transistor of the vehicle-mounted battery during the charging process, and when the first real-time temperature of the internal transistor is monitored to be greater than or equal to the first set temperature threshold, the LBMS sends a request for reducing the current charging current of the vehicle-mounted battery to the VCU, and the VCU may generate an adjustment instruction for the charging current of the vehicle-mounted battery based on the received request and send the adjustment instruction to the DCDC.
Further, by adjusting relevant parameters of the DCDC, the charging parameters of the vehicle-mounted storage battery are adjusted, so that the reduction of the current charging current flowing through the internal transistor of the vehicle-mounted storage battery is realized, and the first real-time temperature of the internal transistor of the vehicle-mounted storage battery is adjusted to the target temperature.
It should be noted that, the VCU may implement information interaction with DCDC through the CAN signal, and the LBMS may implement information interaction with the VCU through the CAN signal, or may use other types of signals, which is not limited herein specifically.
According to the overheat protection method for the internal transistor of the vehicle-mounted storage battery, the first real-time temperature of the internal transistor of the vehicle-mounted storage battery is monitored in the charging process of the vehicle-mounted storage battery, and when the first real-time temperature is greater than or equal to the first set temperature threshold value, the current charging current of the vehicle-mounted storage battery is reduced so as to reduce the internal transistor of the vehicle-mounted storage battery to the target temperature. According to the application, the current charging current of the vehicle-mounted storage battery is timely adjusted by monitoring the first real-time temperature of the internal transistor of the vehicle-mounted storage battery, so that the timeliness of the real-time temperature adjustment of the internal transistor is improved, the complicated operation degree of the real-time temperature adjustment of the internal transistor is weakened, the damage probability of the internal transistor due to overhigh temperature is reduced, the service life of the internal transistor is prolonged, and the real-time temperature adjustment method of the internal transistor is simplified.
In the above embodiment, regarding the temperature adjustment of the internal transistor of the vehicle-mounted battery, it can be further understood with reference to fig. 3, and fig. 3 is a schematic flow chart of a overheat protection method of the internal transistor of the vehicle-mounted battery according to another embodiment of the present application, as shown in fig. 3, the method includes:
s301, responding to the fact that the first real-time temperature is greater than or equal to a first set temperature threshold value, acquiring current state information of the vehicle-mounted storage battery, and determining the current residual electric quantity of the vehicle-mounted storage battery according to the state information.
In the embodiment of the application, in the scene that the first real-time temperature is greater than or equal to the first set temperature threshold, it can be determined that the internal transistor of the vehicle-mounted storage battery has a risk of overhigh temperature.
Optionally, the state of the vehicle-mounted storage battery can be monitored through an LBMS inside the vehicle-mounted storage battery, so that the current state information of the vehicle-mounted storage battery is obtained.
The state information may include a current remaining power of the vehicle-mounted battery, a current parameter flowing through the vehicle-mounted battery in the charged state, a voltage parameter of the vehicle-mounted battery, and the like, which are not particularly limited herein.
Under the scene, the state information of the vehicle-mounted storage battery can be read, so that the current residual electric quantity of the vehicle-mounted storage battery is obtained.
S302, determining the expected charging current of the vehicle-mounted storage battery according to the residual electric quantity and the first real-time temperature.
In the embodiment of the application, when the first real-time temperature of the internal transistor of the vehicle-mounted storage battery is greater than or equal to the first set temperature threshold value, the purpose of reducing the temperature of the internal transistor of the vehicle-mounted storage battery can be achieved by reducing the current charging current of the vehicle-mounted storage battery.
Wherein the current to which the in-vehicle battery needs to be reduced can be determined as the desired charging current of the in-vehicle battery.
As another possible implementation manner, the current charging current of the vehicle-mounted storage battery may be obtained according to the remaining power and the first real-time temperature.
In the embodiment of the application, a certain degree of association exists among the current residual capacity of the vehicle-mounted storage battery, the first real-time temperature of the internal transistor of the vehicle-mounted storage battery and the charging parameter of the vehicle-mounted storage battery, so that the charging parameter of the vehicle-mounted storage battery can be obtained according to the current residual capacity and the first real-time temperature, and the current charging current of the vehicle-mounted storage battery can be obtained based on the charging parameter.
The association relationship between the charging parameter of the vehicle-mounted storage battery, the current residual electric quantity and the first real-time temperature of the internal transistor of the vehicle-mounted storage battery can be shown in the following table:
From the above table, based on the obtained residual power of the vehicle-mounted storage battery and the internal transistor temperature, the corresponding charging rate of the vehicle-mounted storage battery can be determined, and the current charging current of the vehicle-mounted storage battery can be obtained.
Alternatively, a temperature difference between the first real-time temperature and the target temperature may be obtained, and a charging current adjustment value of the vehicle-mounted battery may be obtained according to the temperature difference and a resistance of an internal transistor of the vehicle-mounted battery.
In the embodiment of the application, in order to reduce the temperature of the internal transistor of the vehicle-mounted storage battery after the charging current is reduced to the target temperature, the temperature difference between the first real-time temperature and the target temperature can be obtained, and then the current value of the vehicle-mounted storage battery, which needs to be reduced, is obtained according to the temperature difference and is used as the charging current adjustment value of the vehicle-mounted storage battery.
The charging current adjustment value of the vehicle-mounted storage battery can be obtained according to the temperature difference value and the resistance of the internal transistor of the vehicle-mounted storage battery.
Alternatively, the first heat generated on the internal transistor at this temperature difference may be determined according to the following formula:
Q＝I 2 Rt
in the above formula, Q is the first heat generated on the internal transistor at the temperature difference, R is the resistance of the internal transistor, I is the current flowing through the internal transistor at the temperature difference, and t is the time for which the current flows through the internal transistor.
From this, it is known that the value of I can be calculated based on the above formula, and this value can be used as the charging current adjustment value of the in-vehicle battery.
Accordingly, the first heat generated on the internal transistor at this temperature difference may also be determined according to the following equation:
in the above formula, Q is the first heat generated on the internal transistor at the temperature difference, R is the resistance of the internal transistor, u is the voltage corresponding to the current flowing through the internal transistor at the temperature difference, and t is the time when the current flows through the internal transistor.
From this, it is understood that the value of u can be calculated based on the above formula, and the charging current adjustment value of the in-vehicle storage battery can be obtained based on the obtained value of u and the resistance R value of the internal transistor.
Further, a desired charging current of the vehicle-mounted storage battery is determined according to the present charging current and the charging current adjustment value.
The present charging current and the charging current adjustment value may be subjected to algorithm processing, and the expected charging current of the vehicle-mounted storage battery may be determined according to a result obtained by the algorithm processing.
As another possible implementation manner, according to the target temperature required to be reached after the vehicle-mounted storage battery is lowered, a charging parameter corresponding to the condition that the internal transistor of the vehicle-mounted storage battery is at the target temperature is determined from the table, and then the expected charging current of the vehicle-mounted storage battery is obtained according to the charging parameter.
As an example, the current temperature of the internal transistor of the vehicle-mounted battery is set to 60 degrees celsius, the temperature of the internal transistor needs to be adjusted to the target temperature-25 degrees celsius, wherein the current remaining capacity of the vehicle-mounted battery is 95% of the full capacity, and as can be seen from the above table, the current charging parameter of the vehicle-mounted battery is a charging parameter corresponding to a charging rate of 0.50, and the vehicle-mounted battery needs to be adjusted to a charging parameter corresponding to a charging rate of 0.04.
Further, a charging current included in a charging parameter corresponding to a charging rate of 0.04 is determined as a desired charging current of the in-vehicle storage battery.
S303, generating a first request based on the desired charging current, and reducing the present charging current of the in-vehicle battery based on the first request to reduce the internal transistor of the in-vehicle battery to a target temperature.
Alternatively, the first request may be sent to the overall vehicle controller VCU, through which the present charge current of the in-vehicle battery is reduced based on the first request to reduce the internal transistor of the in-vehicle battery to the target temperature.
As shown in fig. 2, the LBMS may generate corresponding request information according to the obtained desired charging current and send it as a first request to the VCU.
Further, the VCU generates an adjustment instruction of the charging current of the vehicle-mounted storage battery based on the received first request, and sends the adjustment instruction to the DCDC, and the DCDC reduces the current charging current of the vehicle-mounted storage battery based on the received adjustment instruction, so that the purpose of reducing the internal transistor of the vehicle-mounted storage battery to the target temperature is achieved.
The first request may be sent to the VCU based on the CAN signal shown in fig. 2, or may be based on another type of signal, which is not specifically limited herein.
According to the overheat protection method for the internal transistor of the vehicle-mounted storage battery, the current charging current of the vehicle-mounted storage battery is timely adjusted through monitoring the first real-time temperature of the internal transistor of the vehicle-mounted storage battery, so that timeliness of the real-time temperature adjustment of the internal transistor is improved, the complicated operation degree of the real-time temperature adjustment of the internal transistor is weakened, the probability of damage of the internal transistor due to overhigh temperature is reduced, the service life of the internal transistor is prolonged, and the real-time temperature adjustment method of the internal transistor is simplified.
In the above embodiment, regarding the overheat protection of the internal transistor, it can be further understood with reference to fig. 4, and fig. 4 is a schematic flow chart of a method for overheat protection of the internal transistor of the vehicle-mounted storage battery according to another embodiment of the present application, as shown in fig. 4, the method includes:
S401, identifying whether the over-temperature stop-charge protection condition of the vehicle-mounted storage battery is met according to the first real-time temperature.
In the implementation, in order to realize the protection to the internal transistor, the vehicle-mounted storage battery also has an over-temperature stop-and-shoot protection condition, and when the real-time temperature of the internal transistor is detected to meet the condition, the over-temperature stop-and-shoot protection of the internal transistor of the vehicle-mounted storage battery can be executed.
Optionally, in response to the first real-time temperature being greater than or equal to the second set temperature threshold, it is determined that the in-vehicle battery meets the over-temperature stop-charge protection condition.
In the embodiment of the application, the real-time temperature of the internal transistor has the corresponding second set temperature threshold, and when the first real-time temperature of the internal transistor is greater than or equal to the second set temperature threshold, it can be determined that the current real-time temperature of the internal transistor is close to the limit temperature of the internal transistor, thereby meeting the over-temperature stop-surge protection condition of the internal transistor.
And S402, executing the over-temperature stop charge protection strategy of the vehicle-mounted storage battery in response to the condition that the over-temperature stop charge protection condition is met by the vehicle-mounted storage battery.
In the embodiment of the application, the corresponding over-temperature stop-and-punch protection strategy exists in the vehicle-mounted storage battery, and when the vehicle-mounted storage battery is identified to meet the over-temperature stop-and-punch protection condition, the over-temperature stop-and-punch protection of the internal transistor can be realized by executing the over-temperature stop-and-punch protection strategy of the vehicle-mounted storage battery.
Optionally, the on-vehicle storage battery may be adjusted to a non-charging and non-discharging state based on execution of the over-temperature stop-shoot protection strategy, so as to implement over-temperature stop-shoot protection for the internal transistor.
As one possible implementation, a second request for requesting execution of an over-temperature stop-charge protection strategy of the vehicle-mounted battery may be sent to the VCU, wherein the second request is used for adjusting a charging current provided by the vehicle-mounted transforming unit DCDC to the vehicle-mounted battery to zero.
In the embodiment of the application, the second request for executing the over-temperature stop-and-shoot protection strategy by the vehicle-mounted storage battery CAN be generated, the generated second request is sent to the VCU based on the CAN signal, the VCU sends the adjusting instruction corresponding to the second request to the DCDC based on the received second request, and the DCDC reduces the charging current provided by the DCDC to the vehicle-mounted storage battery to zero safety based on the adjusting instruction corresponding to the received second request, so that the aim of adjusting the vehicle-mounted storage battery to a state of no charging and no discharging is fulfilled.
As another possible implementation, a second request for requesting execution of an over-temperature stop-charge protection strategy of the vehicle-mounted battery may be sent to the VCU, wherein the second request is used for adjusting a charging voltage provided by the vehicle-mounted transforming unit DCDC to the vehicle-mounted battery to a current charging voltage of the vehicle-mounted battery.
In the embodiment of the application, the second request for the vehicle-mounted storage battery to execute the over-temperature stop-and-shoot protection strategy CAN be generated, the generated second request is sent to the VCU based on the CAN signal, the VCU sends the adjusting instruction corresponding to the second request to the DCDC based on the received second request, and the DCDC adjusts the charging voltage provided for the vehicle-mounted storage battery to be consistent with the current voltage of the vehicle-mounted storage battery based on the adjusting instruction corresponding to the received second request, so that the aim of adjusting the vehicle-mounted storage battery to be in a non-charging and non-discharging state is fulfilled.
S403, monitoring the second real-time temperature of the vehicle-mounted storage battery after the over-temperature stop-charge protection strategy is executed.
In the embodiment of the application, in order to realize normal charging of the vehicle-mounted storage battery, after the over-temperature stop-and-shoot protection of the internal transistor of the vehicle-mounted storage battery is executed, the real-time temperature of the internal transistor can be continuously monitored.
Wherein the real-time temperature of the internal transistor monitored in the scene may be determined as the second real-time temperature of the internal transistor.
S404, stopping the execution of the over-temperature stop-and-shoot protection strategy and restarting the execution of the charging operation of the vehicle-mounted storage battery in response to the second real-time temperature being less than or equal to the preset recovery charging temperature threshold.
In the embodiment of the application, the corresponding recovery charging temperature threshold exists in the internal transistor of the vehicle-mounted storage battery, and when the second real-time temperature of the internal transistor after the over-temperature stop-and-shoot protection strategy is smaller than or equal to the recovery charging temperature threshold, it can be determined that the current internal transistor is separated from the scene requiring over-temperature stop-and-shoot protection.
In this scenario, the execution of the over-temperature stop-and-shoot protection strategy of the in-vehicle battery may be stopped, and the state of the in-vehicle battery may be adjusted to a charged state from a non-charged and non-discharged state, thereby restarting the normal charging of the in-vehicle battery while protecting the internal transistor.
When the second real-time temperature of the internal transistor is less than or equal to the recovery charging temperature threshold, a request for requesting the DCDC to recover charging is sent to the VCU, the VCU sends a recovery charging instruction to the DCDC based on the received request for recovering charging, and the DCDC resumes the charging operation of the vehicle-mounted storage battery based on the received recovery charging instruction, so that the recovery charging of the vehicle-mounted storage battery is realized.
According to the overheat protection method for the internal transistor of the vehicle-mounted storage battery, the current charging current of the vehicle-mounted storage battery is timely adjusted through monitoring the first real-time temperature of the internal transistor of the vehicle-mounted storage battery, so that timeliness of the real-time temperature adjustment of the internal transistor is improved, the complicated operation degree of the real-time temperature adjustment of the transistor is weakened, the probability of damage of the transistor due to overhigh temperature is reduced, the service life of the transistor is prolonged, and the real-time temperature adjustment method of the transistor is simplified.
For better understanding of the above embodiments, fig. 5 may be combined, and fig. 5 is a schematic flow chart of a overheat protection method of an internal transistor of a vehicle-mounted storage battery according to another embodiment of the present application, as shown in fig. 5:
the vehicle-mounted storage battery starts to be charged, the LBMS in the vehicle-mounted storage battery starts to monitor the real-time temperature of the internal transistor, and when the first real-time temperature of the internal transistor is monitored to be increased to be greater than or equal to a first set temperature threshold value, the LBMS requests to reduce the current charging current of the vehicle-mounted storage battery until the temperature of the internal transistor is smaller than the first set temperature threshold value.
Further, the charging of the vehicle-mounted storage battery is completed under the condition that the real-time temperature stability of the internal transistor is maintained.
According to the overheat protection method for the internal transistor of the vehicle-mounted storage battery, the first real-time temperature of the internal transistor of the vehicle-mounted storage battery is monitored in the charging process of the vehicle-mounted storage battery, and when the first real-time temperature is greater than or equal to the first set temperature threshold value, the current charging current of the vehicle-mounted storage battery is reduced so as to reduce the internal transistor of the vehicle-mounted storage battery to the target temperature. According to the application, the current charging current of the vehicle-mounted storage battery is timely adjusted by monitoring the first real-time temperature of the internal transistor of the vehicle-mounted storage battery, so that the timeliness of the real-time temperature adjustment of the internal transistor is improved, the complicated operation degree of the real-time temperature adjustment of the transistor is weakened, the damage probability of the transistor due to overhigh temperature is reduced, the service life of the transistor is prolonged, and the real-time temperature adjustment method of the transistor is simplified.
In correspondence to the overheat protection method of the internal transistor of the vehicle-mounted battery provided by the above-mentioned several embodiments, an embodiment of the present application further provides an overheat protection device of the internal transistor of the vehicle-mounted battery, and since the overheat protection device of the internal transistor of the vehicle-mounted battery provided by the embodiment of the present application corresponds to the overheat protection method of the internal transistor of the vehicle-mounted battery provided by the above-mentioned several embodiments, the implementation of the overheat protection method of the internal transistor of the vehicle-mounted battery is also applicable to the overheat protection device of the internal transistor of the vehicle-mounted battery provided by the embodiment of the present application, which is not described in detail in the following embodiments.
Fig. 6 is a schematic structural diagram of an overheat protection device for an internal transistor of a vehicle-mounted battery according to an embodiment of the present application, as shown in fig. 6, the overheat protection device 600 for an internal transistor of a vehicle-mounted battery includes a monitoring module 61 and an adjusting module 62, wherein:
a monitoring module 61, configured to monitor a first real-time temperature of an internal transistor of the vehicle-mounted battery during a charging process of the vehicle-mounted battery;
the adjustment module 62 is configured to reduce a present charging current of the vehicle-mounted battery to reduce an internal transistor of the vehicle-mounted battery to a target temperature in response to the first real-time temperature being greater than or equal to a first set temperature threshold.
According to one embodiment of the application, the adjustment module 62 is further configured to: responding to the fact that the first real-time temperature is greater than or equal to a first set temperature threshold value, acquiring current state information of the vehicle-mounted storage battery, and determining the current residual electric quantity of the vehicle-mounted storage battery according to the state information; determining an expected charging current of the vehicle-mounted storage battery according to the residual electric quantity and the first real-time temperature; a first request is generated based on the desired charging current, and the present charging current of the in-vehicle battery is reduced based on the first request to reduce the internal transistor of the in-vehicle battery to a target temperature.
According to one embodiment of the application, the adjustment module 62 is further configured to: acquiring the current charging current of the vehicle-mounted storage battery according to the residual electric quantity and the first real-time temperature; acquiring a temperature difference between the first real-time temperature and the target temperature; obtaining a charging current adjustment value of the vehicle-mounted storage battery according to the temperature difference value and the resistance of an internal transistor of the vehicle-mounted storage battery; and determining the expected charging current of the vehicle-mounted storage battery according to the current charging current and the charging current adjustment value.
According to one embodiment of the application, the adjustment module 62 is further configured to: the first request is sent to the overall vehicle controller VCU, and the current charging current of the vehicle-mounted storage battery is reduced by the VCU based on the first request so as to reduce the internal transistor of the vehicle-mounted storage battery to a target temperature.
According to one embodiment of the application, the adjustment module 62 is further configured to: identifying whether the vehicle-mounted storage battery meets the over-temperature stop charging protection condition according to the first real-time temperature; and determining that the vehicle-mounted storage battery meets the over-temperature stop-charge protection condition in response to the fact that the first real-time temperature is greater than or equal to the second set temperature threshold.
According to one embodiment of the application, the adjustment module 62 is further configured to: responding to the fact that the vehicle-mounted storage battery meets the over-temperature stop-charge protection condition, and executing an over-temperature stop-charge protection strategy of the vehicle-mounted storage battery; monitoring a second real-time temperature of the vehicle-mounted storage battery after the overtemperature stop charging protection strategy is executed; and stopping the execution of the over-temperature stop-and-shoot protection strategy and restarting the execution of the charging operation of the vehicle-mounted storage battery in response to the second real-time temperature being less than or equal to a preset recovery charging temperature threshold.
According to one embodiment of the application, the adjustment module 62 is further configured to: and sending a second request for requesting to execute the over-temperature stop charging protection strategy of the vehicle-mounted storage battery to the VCU, wherein the second request is used for adjusting the charging current provided by the vehicle-mounted voltage transformation unit DCDC for the vehicle-mounted storage battery to zero.
According to one embodiment of the application, the adjustment module 62 is further configured to: and sending a second request for requesting to execute the over-temperature stop charging protection strategy of the vehicle-mounted storage battery to the VCU, wherein the second request is used for adjusting the charging voltage provided by the vehicle-mounted voltage transformation unit DCDC for the vehicle-mounted storage battery to the current charging voltage of the vehicle-mounted storage battery.
According to the overheat protection device for the internal transistor of the vehicle-mounted storage battery, the first real-time temperature of the internal transistor of the vehicle-mounted storage battery is monitored in the charging process of the vehicle-mounted storage battery, and when the first real-time temperature is greater than or equal to the first set temperature threshold value, the current charging current of the vehicle-mounted storage battery is reduced so as to reduce the internal transistor of the vehicle-mounted storage battery to the target temperature. According to the application, the current charging current of the vehicle-mounted storage battery is timely adjusted by monitoring the first real-time temperature of the internal transistor of the vehicle-mounted storage battery, so that the timeliness of the real-time temperature adjustment of the internal transistor is improved, the complicated operation degree of the real-time temperature adjustment of the transistor is weakened, the damage probability of the transistor due to overhigh temperature is reduced, the service life of the transistor is prolonged, and the real-time temperature adjustment method of the transistor is simplified.
In order to achieve the above embodiment, the present application further provides a vehicle, which includes the overheat protection device for the internal transistor of the vehicle-mounted storage battery provided in the embodiment of fig. 6.
To achieve the above embodiments, the present application also provides an electronic device, a computer-readable storage medium, and a computer program product.
Fig. 7 is a schematic structural diagram of an electronic device according to an embodiment of the present application, as shown in fig. 7, the device 700 includes a memory 71, a processor 72, and a computer program stored on the memory 71 and capable of running on the processor 72, and when the processor 72 executes program instructions, the overheat protection method for the internal transistor of the vehicle-mounted storage battery provided in the above embodiment is implemented.
According to the overheat protection method for the internal transistor of the vehicle-mounted storage battery, the first real-time temperature of the internal transistor of the vehicle-mounted storage battery is monitored in the charging process of the vehicle-mounted storage battery, and when the first real-time temperature is greater than or equal to the first set temperature threshold value, the current charging current of the vehicle-mounted storage battery is reduced so as to reduce the internal transistor of the vehicle-mounted storage battery to the target temperature. According to the application, the current charging current of the vehicle-mounted storage battery is timely adjusted by monitoring the first real-time temperature of the internal transistor of the vehicle-mounted storage battery, so that the timeliness of the real-time temperature adjustment of the internal transistor is improved, the complicated operation degree of the real-time temperature adjustment of the transistor is weakened, the damage probability of the transistor due to overhigh temperature is reduced, the service life of the transistor is prolonged, and the real-time temperature adjustment method of the transistor is simplified.
The embodiment of the present application provides a computer-readable storage medium having stored thereon a computer program which, when executed by the processor 72, implements the overheat protection method of the internal transistor of the vehicle-mounted storage battery provided by the above embodiment.
According to the overheat protection method for the internal transistor of the vehicle-mounted storage battery, the first real-time temperature of the internal transistor of the vehicle-mounted storage battery is monitored in the charging process of the vehicle-mounted storage battery, and when the first real-time temperature is greater than or equal to the first set temperature threshold value, the current charging current of the vehicle-mounted storage battery is reduced so as to reduce the internal transistor of the vehicle-mounted storage battery to the target temperature. According to the application, the current charging current of the vehicle-mounted storage battery is timely adjusted by monitoring the first real-time temperature of the internal transistor of the vehicle-mounted storage battery, so that the timeliness of the real-time temperature adjustment of the internal transistor is improved, the complicated operation degree of the real-time temperature adjustment of the transistor is weakened, the damage probability of the transistor due to overhigh temperature is reduced, the service life of the transistor is prolonged, and the real-time temperature adjustment method of the transistor is simplified.
Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuit systems, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), systems On Chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs, the one or more computer programs may be executed and/or interpreted on a programmable system including at least one programmable processor, which may be a special purpose or general-purpose programmable processor, that may receive data and instructions from, and transmit data and instructions to, a storage system, at least one input device, and at least one output device.
Program code for carrying out the methods themselves may be written in any combination of one or more programming languages. These program code may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus such that the program code, when executed by the processor or controller, causes the functions/operations specified in the flowchart and/or block diagram to be implemented. The program code may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
In the context of the present application, a machine-readable medium may be a tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. The machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. The machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
To provide for interaction with a user, the systems and techniques described here can be implemented on a computer having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and pointing device (e.g., a mouse or trackball) by which a user can provide input to the computer. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic input, speech input, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a background component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a grid browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such background, middleware, or front-end components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication grid). Examples of communication grids include: local Area Networks (LANs), wide Area Networks (WANs), the internet, and blockchain grids.
The computer system may include a client and a server. The client and server are typically remote from each other and typically interact through a communications grid. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical hosts and VPS service ("Virtual Private Server" or simply "VPS") are overcome. The server may also be a server of a distributed system or a server that incorporates blockchains.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and additional implementations are included within the scope of the preferred embodiment of the present application in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order from that shown or discussed, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present application.
Logic and/or steps represented in the flowcharts or otherwise described herein, e.g., a ordered listing of executable instructions for implementing logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). In addition, the computer readable medium may even be paper or other suitable medium on which the program is printed, as the program may be electronically captured, via, for instance, optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner, if necessary, and then stored in a computer memory.
It is to be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. As with the other embodiments, if implemented in hardware, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
Those of ordinary skill in the art will appreciate that all or a portion of the steps carried out in the method of the above-described embodiments may be implemented by a program to instruct related hardware, where the program may be stored in a computer readable storage medium, and where the program, when executed, includes one or a combination of the steps of the method embodiments.
In addition, each functional unit in the embodiments of the present application may be integrated in one processing module, or each unit may exist alone physically, or two or more units may be integrated in one module. The integrated modules may be implemented in hardware or in software functional modules. The integrated modules may also be stored in a computer readable storage medium if implemented in the form of software functional modules and sold or used as a stand-alone product.
The above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, or the like. While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present application may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution disclosed in the present application can be achieved, and are not limited herein.
The above embodiments do not limit the scope of the present application. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the scope of the present application.

Claims (12)

1. A overheat protection method for an internal transistor of a vehicle-mounted storage battery, comprising:
Monitoring a first real-time temperature of an internal transistor of a vehicle-mounted storage battery in a charging process of the vehicle-mounted storage battery;
and in response to the first real-time temperature being greater than or equal to a first set temperature threshold, reducing a present charging current of the vehicle-mounted battery to reduce the internal transistor of the vehicle-mounted battery to a target temperature.
2. The method of claim 1, wherein the reducing the present charge current of the on-board battery to reduce the internal transistor of the on-board battery to a target temperature in response to the first real-time temperature being greater than or equal to a first set temperature threshold comprises:
responding to the fact that the first real-time temperature is larger than or equal to the first set temperature threshold value, acquiring current state information of the vehicle-mounted storage battery, and determining current residual electric quantity of the vehicle-mounted storage battery according to the state information;
determining an expected charging current of the vehicle-mounted storage battery according to the residual electric quantity and the first real-time temperature;
a first request is generated based on the desired charging current and the present charging current of the in-vehicle battery is reduced based on the first request to reduce the internal transistor of the in-vehicle battery to the target temperature.
3. The method of claim 2, wherein the determining the desired charging current of the on-board battery based on the remaining charge and the first real-time temperature comprises:
acquiring the current charging current of the vehicle-mounted storage battery according to the residual electric quantity and the first real-time temperature;
acquiring a temperature difference between the first real-time temperature and the target temperature;
obtaining a charging current adjustment value of the vehicle-mounted storage battery according to the temperature difference value and the resistance of the internal transistor of the vehicle-mounted storage battery;
and determining the expected charging current of the vehicle-mounted storage battery according to the current charging current and the charging current adjustment value.
4. The method of claim 2, wherein the generating a first request based on the desired charging current and reducing the present charging current of the on-board battery based on the first request to reduce the internal transistor of the on-board battery to the target temperature comprises:
the first request is sent to a vehicle controller VCU, by which the present charging current of the on-board battery is reduced based on the first request to reduce the internal transistor of the on-board battery to the target temperature.
5. The method according to any one of claims 1-4, further comprising:
identifying whether the vehicle-mounted storage battery meets an over-temperature stop-charge protection condition according to the first real-time temperature;
and determining that the vehicle-mounted storage battery meets the over-temperature stop-charge protection condition in response to the first real-time temperature being greater than or equal to a second set temperature threshold.
6. The method of claim 5, wherein the method further comprises:
responding to the fact that the vehicle-mounted storage battery meets the over-temperature stop-charge protection condition, and executing an over-temperature stop-charge protection strategy of the vehicle-mounted storage battery;
monitoring a second real-time temperature of the vehicle-mounted storage battery after the over-temperature stop-charge protection strategy is executed;
and stopping the execution of the over-temperature stop-and-shoot protection strategy and restarting the execution of the charging operation of the vehicle-mounted storage battery in response to the second real-time temperature being less than or equal to a preset recovery charging temperature threshold.
7. The method of claim 6, wherein the executing the over-temperature and charge protection strategy of the on-board battery in response to the on-board battery satisfying the over-temperature and charge protection condition comprises:
And sending a second request for requesting to execute the over-temperature stop-charge protection strategy of the vehicle-mounted storage battery to the VCU, wherein the second request is used for adjusting the charging current provided by a vehicle-mounted voltage transformation unit DCDC for the vehicle-mounted storage battery to zero.
8. The method of claim 6, wherein the executing the over-temperature and charge protection strategy of the on-board battery in response to the on-board battery satisfying the over-temperature and charge protection condition comprises:
and sending a second request for requesting to execute the over-temperature stop charging protection strategy of the vehicle-mounted storage battery to the VCU, wherein the second request is used for adjusting the charging voltage provided by the vehicle-mounted voltage transformation unit DCDC for the vehicle-mounted storage battery to the current charging voltage of the vehicle-mounted storage battery.
9. An overheat protection device for an internal transistor of a vehicle-mounted storage battery, comprising:
the monitoring module is used for monitoring the first real-time temperature of the internal transistor of the vehicle-mounted storage battery in the charging process of the vehicle-mounted storage battery;
and the adjusting module is used for responding to the fact that the first real-time temperature is greater than or equal to a first set temperature threshold value, and reducing the current charging current of the vehicle-mounted storage battery so as to reduce the internal transistor of the vehicle-mounted storage battery to a target temperature.
10. An electronic device, comprising a memory and a processor;
wherein the processor runs a program corresponding to executable program code stored in the memory by reading the executable program code for implementing the method according to any one of claims 1-8.
11. A computer readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, implements the method according to any of claims 1-8.
12. A vehicle comprising the apparatus of claim 9.
CN202310369967.6A 2023-04-07 2023-04-07 Overheat protection method and device for internal transistor of vehicle-mounted storage battery Pending CN116707062A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116979661A (en) * 2023-09-21 2023-10-31 宁波吉利汽车研究开发有限公司 Whole vehicle low-voltage energy management method and system and vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116979661A (en) * 2023-09-21 2023-10-31 宁波吉利汽车研究开发有限公司 Whole vehicle low-voltage energy management method and system and vehicle

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