CN117674336A - Charging control method and system for vehicle-mounted multi-storage battery, vehicle and medium - Google Patents
Charging control method and system for vehicle-mounted multi-storage battery, vehicle and medium Download PDFInfo
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- CN117674336A CN117674336A CN202211057722.1A CN202211057722A CN117674336A CN 117674336 A CN117674336 A CN 117674336A CN 202211057722 A CN202211057722 A CN 202211057722A CN 117674336 A CN117674336 A CN 117674336A
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- 238000012163 sequencing technique Methods 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 3
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
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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
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The invention discloses a charging control method and system for a vehicle-mounted multi-storage battery, a vehicle and a medium. The charging control method comprises the following steps: the method comprises the steps of obtaining state information of each storage battery in a plurality of storage batteries, and sending a charging request to a whole vehicle communication network when the storage batteries are determined to be charged according to the state information of each storage battery in the plurality of storage batteries, wherein the charging request is used for indicating a voltage regulating module to convert direct current output by a vehicle-mounted power battery so as to charge each storage battery in the plurality of storage batteries, and regulating output voltage of the voltage regulating module according to the state information of each storage battery in the plurality of storage batteries so as to meet different charging target voltage grades of the storage batteries. Therefore, the output voltage of the voltage regulating module is dynamically regulated, the charging power and the charging load can be effectively controlled, and the overlarge pressure difference between the output voltage of the voltage regulating module and the voltage of the storage battery is avoided, so that the problems of serious heating or over-current protection of the voltage regulating module due to overlarge charging current are avoided.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a charging control method and system for a vehicle-mounted multi-storage battery, a vehicle and a medium.
Background
Along with the gradual popularization of high-order auxiliary driving, each cart factory promotes the upgrading of the whole car electric framework aiming at the consideration of functional safety, especially for the scene of L3 and above, promotes the redundancy of various perception and decision-making executing mechanisms, and simultaneously brings the requirement for power supply redundancy, so that more and more vehicles begin to integrate a plurality of storage batteries to meet the requirement for functional safety.
However, in the related art, the charging control scheme of the storage battery is only suitable for a scenario where the vehicle has only one storage battery, and when the charging control scheme is applied to a scenario where the vehicle-mounted multi-storage battery is used, the problems of serious heating or over-current protection of triggering the voltage regulating module and the like caused by excessive charging current exist.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent. Therefore, a first object of the present invention is to provide a charging control method for a vehicle-mounted multi-battery, which can effectively control charging power and charging load, and avoid the problems of serious heat generation or triggering over-current protection of the voltage regulating module due to excessive charging current due to excessive pressure difference between the output voltage of the voltage regulating module and the voltage of the battery.
A second object of the present invention is to propose a computer readable storage medium.
A third object of the present invention is to propose a vehicle.
A fourth object of the present invention is to provide a charging control system for a vehicle-mounted multi-battery.
To achieve the above object, an embodiment of a first aspect of the present invention provides a method for controlling charging of a vehicle-mounted multi-battery, the method including: acquiring state information of each storage battery in a plurality of storage batteries; when the storage battery is determined to be charged according to the state information of each storage battery in the plurality of storage batteries, a charging request is sent to a whole vehicle communication network, wherein the charging request is used for indicating a voltage regulating module to convert direct current output by the vehicle-mounted power battery so as to charge each storage battery in the plurality of storage batteries; and regulating the output voltage of the voltage regulating module according to the state information of each storage battery in the plurality of storage batteries so as to meet different charging target voltage grades of the storage batteries.
According to the charging control method for the vehicle-mounted multi-storage battery, disclosed by the embodiment of the invention, the output voltage of the voltage regulating module is dynamically regulated according to the state information of each storage battery in the plurality of storage batteries, so that the charging power and the charging load can be effectively controlled, and the problem that the voltage difference between the output voltage of the voltage regulating module and the voltage of the storage battery is overlarge, so that the problems of serious heating or over-current protection triggering of the voltage regulating module and the like caused by overlarge charging current are avoided.
In some embodiments of the present invention, the adjusting the output voltage of the voltage adjustment module according to the status information of each of the plurality of batteries includes: sequencing the current voltages of the plurality of storage batteries according to the state information of each storage battery in the plurality of storage batteries, and determining a minimum voltage value according to sequencing results; and adjusting the output voltage of the voltage adjusting module according to the minimum voltage value.
In some embodiments of the invention, adjusting the output voltage of the voltage adjustment module according to the minimum voltage value includes: and when the sum of the minimum voltage value and the preset voltage threshold value is smaller than a second small voltage value, controlling the voltage regulating module to output according to the sum of the minimum voltage value and the preset voltage threshold value.
In some embodiments of the present invention, the plurality of batteries are charged simultaneously when a voltage difference between each two of the plurality of batteries is equal to or less than a preset voltage threshold.
In some embodiments of the invention, when the plurality of batteries includes a first battery and a second battery, adjusting the output voltage of the voltage adjustment module according to the minimum voltage value includes: when the current voltage of the first storage battery is larger than the current voltage of the second storage battery and the pressure difference between the first storage battery and the second storage battery is larger than a preset voltage threshold value, the voltage regulating module is controlled to output according to the sum of the current voltage of the second storage battery and the preset voltage threshold value so as to charge the second storage battery, and the first storage battery and the second storage battery are charged simultaneously until the pressure difference between the first storage battery and the second storage battery is smaller than or equal to the preset voltage threshold value.
In some embodiments of the invention, the method further comprises, while the vehicle is in a dormant state: waking up the BMS when the storage battery is determined to be charged according to the state information of each storage battery in the plurality of storage batteries; the BMS acquires state information of the vehicle-mounted power battery, controls the vehicle to enter the dormant state when the vehicle-mounted power battery is determined to be prohibited from discharging according to the state information of the vehicle-mounted power battery, and wakes the voltage regulating module when the vehicle-mounted power battery is determined to be permitted to discharge according to the state information of the vehicle-mounted power battery so as to trigger the voltage regulating module to send self state information to the whole vehicle communication network.
In some embodiments of the invention, when the battery is full, the method further comprises: and acquiring a whole vehicle state, and controlling the vehicle to enter the dormant state when the vehicle-mounted power battery is determined to be allowed to be closed according to the whole vehicle state.
To achieve the above object, a second aspect of the present invention provides a computer-readable storage medium having stored thereon a charge control program that, when executed by a processor, implements the charge control method for a vehicle-mounted multi-battery according to any one of the above embodiments.
According to the computer readable storage medium, the output voltage of the voltage regulating module is dynamically regulated according to the state information of each storage battery in the plurality of storage batteries, so that the charging power and the charging load can be effectively controlled, and the problems of serious heating or over-current protection triggering of the voltage regulating module caused by overlarge charging current due to overlarge pressure difference between the output voltage of the voltage regulating module and the voltage of the storage battery are avoided.
To achieve the above object, an embodiment of a third aspect of the present invention provides a vehicle, where the vehicle includes a memory, a processor, and a charge control program stored in the memory and executable on the processor, and when the processor executes the charge control program, the charge control method for the vehicle-mounted multi-battery according to any one of the embodiments is implemented.
According to the vehicle provided by the embodiment of the invention, the output voltage of the voltage regulating module is dynamically regulated according to the state information of each storage battery in the plurality of storage batteries, so that the charging power and the charging load can be effectively controlled, and the problems of serious heating or over-current protection triggering of the voltage regulating module caused by overlarge charging current are avoided.
To achieve the above object, a fourth aspect of the present invention provides a charge control system for a vehicle-mounted multi-battery, the charge control system comprising: a plurality of storage batteries; a battery sensor for acquiring state information of each of the plurality of storage batteries; the vehicle-mounted power battery is used for outputting direct current; the voltage regulating module is used for converting direct current output by the vehicle-mounted power battery to charge each storage battery in the plurality of storage batteries; and the vehicle body controller is used for sending a charging request to the whole vehicle communication network when the storage battery is determined to be charged according to the state information of each storage battery in the plurality of storage batteries, wherein the charging request is used for indicating the voltage regulating module to convert direct current output by the vehicle-mounted power battery so as to charge each storage battery in the plurality of storage batteries, and regulating the output voltage of the voltage regulating module according to the state information of each storage battery in the plurality of storage batteries so as to meet different charging target voltage levels of the storage batteries.
According to the charging control system for the vehicle-mounted multi-storage battery, disclosed by the embodiment of the invention, the output voltage of the voltage regulating module is dynamically regulated according to the state information of each storage battery in the plurality of storage batteries, so that the charging power and the charging load can be effectively controlled, and the problem that the voltage difference between the output voltage of the voltage regulating module and the voltage of the storage battery is overlarge, so that the problems of serious heating or over-current protection triggering of the voltage regulating module and the like caused by overlarge charging current are avoided.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, wherein:
fig. 1 is a flow chart of a method for controlling charging of a vehicle-mounted multi-battery according to an embodiment of the present invention;
FIG. 2 is a flow chart of a method for controlling charging of a plurality of storage batteries in a vehicle according to another embodiment of the present invention;
FIG. 3 is a flow chart of a method for controlling charging of a plurality of storage batteries in a vehicle according to another embodiment of the present invention;
FIG. 4 is a block diagram of a vehicle according to one embodiment of the invention;
fig. 5 is a block diagram showing a configuration of a charge control system for a vehicle-mounted multi-battery according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention 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 invention and should not be construed as limiting the invention.
The following describes in detail a method, a system, a vehicle and a medium for controlling charging of a vehicle-mounted multi-battery according to an embodiment of the present invention with reference to the accompanying drawings.
Fig. 1 is a flow chart of a method for controlling charging of a vehicle-mounted multi-battery according to an embodiment of the invention, as shown in fig. 1, the method for controlling charging of a vehicle-mounted multi-battery according to an embodiment of the invention includes:
s11: acquiring state information of each storage battery in a plurality of storage batteries;
s13: when the storage battery is determined to be charged according to the state information of each storage battery in the plurality of storage batteries, a charging request is sent to a whole vehicle communication network, wherein the charging request is used for indicating a voltage regulating module to convert direct current output by a vehicle-mounted power battery so as to charge each storage battery in the plurality of storage batteries;
s15: and regulating the output voltage of the voltage regulating module according to the state information of each storage battery in the plurality of storage batteries so as to meet different charging target voltage grades of the storage batteries.
According to the charging control method for the vehicle-mounted multi-storage battery, disclosed by the embodiment of the invention, the output voltage of the voltage regulating module is dynamically regulated according to the state information of each storage battery in the plurality of storage batteries, so that the charging power and the charging load can be effectively controlled, and the problem that the voltage difference between the output voltage of the voltage regulating module and the voltage of the storage battery is overlarge, so that the problems of serious heating or over-current protection triggering of the voltage regulating module and the like caused by overlarge charging current are avoided. It will be appreciated that if the battery is charged with a certain fixed output voltage at all times, this means that the battery is charged as soon as the vehicle starts up until the battery voltage coincides with the output voltage of the voltage regulation module. The charging mode depending on the voltage difference between the output voltage and the storage battery is relatively good under the condition of a single storage battery if the voltage difference is too large, but if the voltage of a plurality of storage batteries is relatively low, the charging current is too large when the fixed voltage is directly output for charging, and then the problems of serious heating or over-current protection of the voltage regulating module are caused.
Specifically, the State information of the battery may include information of a voltage, a temperature, an SOC (State of Charge), an SOH (State of Health) and the like of the battery. In some embodiments, a battery sensor may be disposed corresponding to each of the plurality of batteries, so as to obtain status information of each of the plurality of batteries through each battery sensor.
Further, whether the storage battery needs to be charged or not may be determined according to the SOC of the storage battery, for example, when the SOC of a certain storage battery is equal to or smaller than a set value, it may be determined that the storage battery needs to be charged; when the SOC of a certain battery is greater than a set value, it can be determined that the battery does not need to be charged. The situations where the battery needs to be charged may include: determining that the storage battery needs to be charged in the running process; the storage battery is self-discharged when the vehicle is in a dormant state, the risk of the storage battery for power shortage is detected, and the storage battery is determined to be required to be charged; the storage battery is required to be charged when the electric quantity of the storage battery is insufficient in the OTA upgrading process; battery replenishment may occur after battery replacement; other scenarios, etc.
The overall vehicle communication network may include a CAN network.
It is understood that there are a plurality of charging target voltage levels between the present voltage and the full charge voltage of the storage battery, one charging target voltage level corresponds to one output voltage, the output voltages corresponding to the plurality of charging target voltage levels are sequentially increased, the output voltage corresponding to the first charging target voltage level is obtained by increasing a certain value on the basis of the present voltage, and the output voltage corresponding to the subsequent charging target voltage level is obtained by increasing a certain value on the basis of the output voltage corresponding to the previous charging target voltage level. In the charging process of the storage battery, after the output voltage corresponding to one charging target voltage level is determined, the output voltage of the voltage regulating module is set to be the output voltage corresponding to the charging target voltage level, so that the storage battery can be charged to the output voltage corresponding to the charging target voltage level, when the voltage of the storage battery reaches the output voltage corresponding to the charging target voltage level, the output voltage corresponding to the next charging target voltage level is determined, and the output voltage of the voltage regulating module is set to be the output voltage corresponding to the next charging target voltage level, therefore, a plurality of storage batteries can be charged to be full-charge voltage in a level mode, and serious heating in the charging process or over-current protection of the voltage regulating module caused by overlarge pressure difference between the voltage of the storage battery and the output voltage of the voltage regulating module is prevented.
In certain embodiments, the voltage regulation module comprises a DC-DC (Direct Current Direct Current Converter, direct current-to-direct current converter) module.
Referring to fig. 2, in some embodiments of the present invention, step S15 includes:
s151: sequencing the current voltages of the plurality of storage batteries according to the state information of each storage battery in the plurality of storage batteries, and determining a minimum voltage value according to sequencing results;
s153: and adjusting the output voltage of the voltage adjusting module according to the minimum voltage value.
Therefore, the charging condition of the storage battery with the minimum voltage value is prioritized, and the situation that the output voltage and the storage battery with the minimum voltage value have overlarge pressure difference to cause serious heating in the charging process or trigger the overcurrent protection of the voltage regulating module is avoided.
Specifically, if the sorting is performed in order of from small to large, a minimum voltage value, a second small voltage value, a third large voltage value, a second large voltage value, and a maximum voltage value may be sequentially determined according to the sorting result, wherein the minimum voltage value is equal to or less than the second small voltage value, the second small voltage value is equal to or less than the third small voltage value, the third large voltage value is equal to or less than the second large voltage value, and the second large voltage value is equal to or less than the maximum voltage value.
It can be understood that the current voltage of the storage battery changes during the charging process of the storage battery, and in the embodiment of the invention, when the current voltage of the storage battery changes, the output voltage of the voltage regulating module is continuously regulated according to the minimum voltage value in the changed current voltages of the plurality of storage batteries.
In some embodiments of the present invention, step S153 includes: when the sum of the minimum voltage value and the preset voltage threshold is smaller than the second small voltage value, the control voltage regulating module outputs according to the sum of the minimum voltage value and the preset voltage threshold.
Therefore, the storage battery with the minimum voltage value is charged preferentially, the pressure difference between the storage battery with the minimum voltage value and the rest storage battery is reduced, and the phenomenon that the temperature of the charging process is serious or the overcurrent protection of the voltage regulating module is triggered due to the overlarge pressure difference between the output voltage and the storage battery with the minimum voltage value is avoided.
Specifically, when the output voltage of the voltage regulating module is the sum of the minimum voltage value and the preset voltage threshold value, only the storage battery corresponding to the minimum voltage value is charged, and the current voltage of the remaining storage battery is larger than the sum of the minimum voltage value and the preset voltage threshold value, so that the remaining storage battery is not charged temporarily.
The preset voltage threshold is determined according to the state information of each storage battery in the plurality of storage batteries, and it can be understood that the preset voltage threshold corresponding to the different state information of each storage battery in the plurality of storage batteries or the relational expression of the preset voltage threshold can be calibrated in advance in an experiment mode or the like, or the corresponding preset voltage threshold can be determined by combining the pre-calibrated data when the state information of each storage battery in the plurality of storage batteries is acquired.
In certain embodiments, step S153 comprises: when the sum of the minimum voltage value and the preset voltage threshold value is smaller than the second small voltage value, the control voltage regulating module outputs according to the second small voltage value. In this way, the battery having the smallest voltage value is charged first to the second smallest voltage value.
In some embodiments of the present invention, the plurality of batteries are charged simultaneously when a voltage difference between each two of the plurality of batteries is equal to or less than a preset voltage threshold.
Thus, the charging efficiency is ensured, and meanwhile, the phenomenon of overcurrent and overheat is avoided.
Specifically, the preset voltage threshold may be increased on the basis of the minimum voltage value to determine the output voltage of the voltage regulation module, and when the voltages of the plurality of storage batteries reach the output voltage, the output voltage of the voltage regulation module is continuously increased by the preset voltage threshold to charge the plurality of storage batteries again, so that the cycle is performed until the plurality of storage batteries are full.
In some embodiments of the present invention, when the plurality of batteries includes a first battery and a second battery, adjusting the output voltage of the voltage adjustment module according to the minimum voltage value includes: when the current voltage of the first storage battery is larger than the current voltage of the second storage battery and the pressure difference between the first storage battery and the second storage battery is larger than the preset voltage threshold, the voltage regulating module is controlled to output according to the sum of the current voltage of the second storage battery and the preset voltage threshold so as to charge the second storage battery, and the first storage battery and the second storage battery are charged simultaneously until the pressure difference between the first storage battery and the second storage battery is smaller than or equal to the preset voltage threshold.
Therefore, the first storage battery and the second storage battery are charged with the smallest voltage, and when the voltages of the first storage battery and the second storage battery are close, the first storage battery and the second storage battery are charged at the same time, so that the problem that the output voltage of the voltage regulating module and the voltage of the storage battery with the smallest voltage are overlarge due to direct charging of the two storage batteries is avoided, and the problems of serious heating or overcurrent protection of the voltage regulating module is avoided due to overlarge charging current are avoided. It can be understood that the voltage difference between the first battery and the second battery is not excessively large because the preset voltage threshold is increased based on the minimum voltage of the first battery and the voltage of the second battery and the output voltage of the voltage regulating module is obtained, instead of increasing the preset voltage threshold based on the maximum voltage of the first battery and the voltage of the second battery.
In other embodiments, the number of batteries may be three, four, or greater than four, without limitation.
In one example, the preset voltage threshold is determined according to the state information of each of the plurality of batteries, the voltage of the second battery is aV, the voltage of the first battery is bV, b-a > 0.5, that is, the voltage difference between the first battery and the second battery is greater than the preset voltage threshold, so that the output voltage of the voltage regulating module is controlled to be a+0.5v first, the second battery starts to charge at the moment, the first battery is not charged, and the output voltage of the voltage regulating module is controlled to be b+0.5v when the voltage of the second battery is close to the voltage of the first battery, so that the first battery and the second battery can be charged simultaneously, and then when the voltage of the second battery and the voltage of the first battery reach b+0.5v, the output voltage of the voltage regulating module is controlled to be b+1v, and the first battery and the second battery are continuously charged simultaneously, so that the cycle is continued until the first battery and the second battery are fully charged.
In some embodiments of the invention, the method further comprises, while the vehicle is in a dormant state:
s17: waking up the BMS (Battery Management System ) when it is determined that the battery needs to be charged according to the state information of each of the plurality of batteries;
s19: the BMS acquires state information of the vehicle-mounted power battery, controls the vehicle to enter a dormant state when the vehicle-mounted power battery is forbidden to discharge according to the state information of the vehicle-mounted power battery, and wakes up the voltage regulating module when the vehicle-mounted power battery is allowed to discharge according to the state information of the vehicle-mounted power battery, so that the voltage regulating module is triggered to send self state information to the whole vehicle communication network.
Therefore, when the vehicle is in a dormant state, the state information of each storage battery in the plurality of storage batteries is monitored, so that the power shortage state of the storage batteries can be found in time, and the storage batteries can be charged.
Specifically, when the vehicle is in a sleep state, both the BMS and the voltage regulation module are in a sleep state, but when it is monitored that the battery needs to be charged, the BMS and the voltage regulation module may be sequentially awakened to charge the battery. The state information of the vehicle-mounted power battery can also be obtained through a set current sensor. The state information of the vehicle-mounted power battery may include information of temperature, SOC, SOH, etc. of the vehicle-mounted power battery.
In some embodiments, when the SOC of the on-board power battery is less than or equal to 5% of full charge, the BMS determines to prohibit the on-board power battery from discharging, exits the charge control flow of the battery, and controls the vehicle to enter a sleep state or other states; when the SOC of the in-vehicle power battery is greater than 5% of full charge, the BMS determines to allow the in-vehicle power battery to discharge. In some embodiments, the charge request is for instructing the voltage regulation module to transform the direct current output by the on-board power battery to charge each of the plurality of batteries when the BMS allows the on-board power battery to discharge.
It should be noted that, in the charging process, the state information of the vehicle-mounted power battery can be monitored, so that when the SOC of the vehicle-mounted power battery is low to a set value, the vehicle-mounted power battery is forbidden to discharge, and the vehicle-mounted power battery is timely withdrawn from charging, so that the safety is ensured. In addition, in the charging process, whether the actual output voltage of the voltage regulating module is equal to the charging target voltage level or not can be monitored, and when the actual output voltage of the voltage regulating module is unequal, compensation control is carried out on the output voltage, so that the actual output voltage of the voltage regulating module is equal to the charging target voltage level; when the state information of the plurality of storage batteries is equal, the voltage regulating module is dynamically informed to regulate the output voltage according to the state information of each storage battery.
Referring to fig. 3, in some embodiments, when the BMS allows the vehicle-mounted power battery to discharge, further determining whether to allow the high voltage to be turned on, if yes, performing high voltage pre-charging and starting the high voltage so that the voltage regulating module outputs a corresponding voltage; otherwise, the charging control flow of the storage battery is exited, and the vehicle is controlled to enter a dormant state or other states.
In some embodiments of the present invention, step S13 includes:
s131: and when the voltage regulation module is determined to wake up according to the self state information, a charging request is sent to the whole vehicle communication network.
In this way, the direct voltage regulation module converts the direct current output from the vehicle-mounted power battery to charge each of the plurality of storage batteries.
Specifically, the self-state information may include an operation state of the voltage regulation module.
In some embodiments of the invention, when the battery is full, the method further comprises: and acquiring the state of the whole vehicle, and controlling the vehicle to enter a dormant state when the vehicle-mounted power battery is determined to be allowed to be closed according to the state of the whole vehicle.
Thus, when the storage battery is full, whether to enter a dormant state or other states is judged according to the whole vehicle state. It can be appreciated that while the vehicle is in a dormant state, the user may not use the vehicle demand, but during the process of charging the storage battery, the user may generate the vehicle demand, so when the storage battery is full, it needs to further determine whether the vehicle state allows the vehicle-mounted power battery to be turned off, so as to avoid traffic accidents caused by sudden power failure during driving.
Specifically, when it is determined that the in-vehicle power battery is supplying power to other functions than charging according to the state of the whole vehicle, it is determined that the in-vehicle power battery is prohibited from being turned off.
It is noted that the specific values mentioned above are only for the purpose of illustrating the implementation of the present invention in detail and are not to be construed as limiting the present invention. In other examples or embodiments or examples, other values may be selected according to the present invention, without specific limitation.
In order to achieve the above embodiments, the embodiments of the present invention further provide a computer readable storage medium having stored thereon a charge control program that, when executed by a processor, implements the charge control method for the vehicle-mounted multi-battery of any of the above embodiments.
According to the computer readable storage medium, the output voltage of the voltage regulating module is dynamically regulated according to the state information of each storage battery in the plurality of storage batteries, so that the charging power and the charging load can be effectively controlled, and the problems of serious heating or over-current protection triggering of the voltage regulating module caused by overlarge charging current due to overlarge pressure difference between the output voltage of the voltage regulating module and the voltage of the storage battery are avoided.
It should be noted that the above explanation of the embodiments and advantageous effects of the charge control method for a vehicle-mounted multi-battery is also applicable to the computer-readable storage medium of the embodiments of the present invention, and is not developed in detail herein to avoid redundancy.
In order to implement the above embodiment, the present invention further proposes a vehicle, and fig. 4 is a block diagram of the structure of the vehicle according to one embodiment of the present invention, and as shown in fig. 4, the vehicle 100 includes a memory 102, a processor 104, and a charge control program 106 stored in the memory 102 and capable of running on the processor 104, where the processor 104 implements the charge control method for the vehicle-mounted multi-battery according to any one of the above embodiments when the processor 104 executes the charge control program 106.
According to the vehicle 100 of the embodiment of the invention, the output voltage of the voltage regulating module is dynamically regulated according to the state information of each storage battery in the plurality of storage batteries, so that the charging power and the charging load can be effectively controlled, and the problems of serious heating or over-current protection triggering of the voltage regulating module caused by overlarge charging current due to overlarge pressure difference between the output voltage of the voltage regulating module and the voltage of the storage batteries are avoided.
Specifically, the vehicle 100 includes, but is not limited to, a pure electric vehicle, a hybrid electric vehicle, an extended range electric vehicle, a fuel-fired vehicle, and the like.
It should be noted that the above explanation of the embodiments and advantageous effects of the charge control method for the vehicle-mounted multi-battery is also applicable to the vehicle 100 according to the embodiment of the present invention, and is not developed in detail herein to avoid redundancy.
To achieve the above-described embodiments, the present invention also proposes a charging control system for a vehicle-mounted multi-battery, and fig. 5 is a block diagram of the charging control system for a vehicle-mounted multi-battery according to an embodiment of the present invention, and as shown in fig. 5, the charging control system 200 includes a plurality of batteries 201, battery sensors (Electronic Battery Sensor, EBS) 202, a vehicle-mounted power battery 203, a voltage regulation module 205, and a vehicle body controller 206 (Body Control Module, BCM). The battery sensor 202 is used to acquire state information of each of the plurality of storage batteries 201. The in-vehicle power battery 203 is configured to output direct current. The BMS204 is for allowing the in-vehicle power battery 203 to discharge. The voltage regulation module 205 is configured to convert the direct current output from the vehicle-mounted power battery 203 to charge each of the plurality of storage batteries 201. The vehicle body controller 206 is configured to send a charging request to the whole vehicle communication network when determining that the battery 201 needs to be charged according to the state information of each of the plurality of batteries 201, where the charging request is used to instruct the voltage adjustment module 205 to convert the direct current output by the vehicle-mounted power battery 203 to charge each of the plurality of batteries 201, and adjust the output voltage of the voltage adjustment module 205 according to the state information of each of the plurality of batteries 201 to meet different charging target voltage levels of the batteries 201.
According to the charging control system 200 of the vehicle-mounted multi-storage battery 201 in the embodiment of the invention, the output voltage of the voltage regulating module 205 is dynamically regulated according to the state information of each storage battery 201 in the plurality of storage batteries 201, so that charging power and charging load can be effectively controlled, and the problem that the voltage difference between the output voltage of the voltage regulating module 205 and the voltage of the storage battery 201 is overlarge, so that serious heating caused by overlarge charging current or overcurrent protection of the voltage regulating module 205 is triggered is avoided.
It will be appreciated that when one voltage adjustment module is used to output voltages to a plurality of storage batteries, if multiple paths are simultaneously output on the voltage adjustment module to charge the storage batteries respectively, that is, one voltage adjustment has a plurality of output pins corresponding to the plurality of storage batteries, the voltage adjustment module needs to be redesigned, and when the output power of the voltage adjustment module needs to be increased, the voltage adjustment module needs to be redesigned, so that the cost is high.
In the charging control system according to the embodiment of the present invention, the hardware connection architecture of the voltage regulation module 205 is not changed, but the newly added storage battery 201 is simultaneously connected to the vehicle body controller 206 to monitor on the basis of the scheme of the single storage battery 201 by modifying the wiring harness, and the newly added storage battery 201 and the scheme of the single storage battery 201 share one path of charging input, i.e. a plurality of branches are separated from the connection line between the voltage regulation module 205 and one storage battery 201, so that the plurality of storage batteries 201 are all charged through the same output pin of the voltage regulation module 205, thereby saving the cost. And by means of upgrading the software of the voltage regulation module 205, the voltage regulation module 205 CAN support the CAN interface to control the output voltage to be dynamically regulated, such as a voltage debugging range of 9-16V, so that the voltage regulation module 205 CAN receive a voltage regulation message through a whole vehicle communication network (CAN or other bus interfaces) and dynamically regulate the output voltage, thereby reducing the pressure difference between the output voltage and the voltage of the storage battery 201 to avoid the risk of overcurrent caused by overlarge pressure difference.
Specifically, the number of the battery sensors 202 may be plural, that is, one battery sensor 202 may be provided for each of the plurality of storage batteries 201 and the in-vehicle power battery 203. BCM206 may communicate with battery sensor 202 via LIN or other bus interface to obtain status information of each of the plurality of batteries 201, and tell voltage regulation module 205 via CAN via a charge request to convert the dc power output from vehicle power battery 203 to charge each of the plurality of batteries 201. The output voltage of the voltage adjustment module 205 is determined by the BCM206 based on the state information of each of the plurality of batteries 201, and can be adjusted in real time.
The charging control system 200 further includes a BMS204, where the BMS204 is configured to receive a request from the BCM206 in some state, for example, in a vehicle flameout state, the BCM206 polls the power of each of the plurality of batteries 201 and determines whether the battery 201 needs to be charged, and if so, the BMS204 needs to be awakened, and the BMS204 needs to confirm whether the vehicle-mounted power battery 203 is allowed to be discharged.
In the embodiment shown in fig. 5, the voltage adjustment module 205 is a DC-DC module, and in other embodiments, the voltage adjustment module 205 may be another module, which is not limited herein.
It should be noted that the above explanation of the embodiments and advantageous effects of the charge control method for the vehicle-mounted multi-battery 201 is also applicable to the charge control system 200 for the vehicle-mounted multi-battery 201 according to the embodiment of the present invention, and is not developed in detail herein to avoid redundancy.
It should be noted that the logic and/or steps represented in the flowcharts or otherwise described herein, for example, may be considered as a ordered listing of executable instructions for implementing logical functions, and may 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 invention 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. For example, if implemented in hardware, as in another embodiment, 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.
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 invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. 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 terms "first," "second," and the like, as used in embodiments of the present invention, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or as implying any particular number of features in the present embodiment. Thus, a feature of an embodiment of the invention that is defined by terms such as "first," "second," etc., may explicitly or implicitly indicate that at least one such feature is included in the embodiment. In the description of the present invention, the word "plurality" means at least two or more, for example, two, three, four, etc., unless explicitly defined otherwise in the embodiments.
In the present invention, unless explicitly stated or limited otherwise in the examples, the terms "mounted," "connected," and "fixed" as used in the examples should be interpreted broadly, e.g., the connection may be a fixed connection, may be a removable connection, or may be integral, and it may be understood that the connection may also be a mechanical connection, an electrical connection, etc.; of course, it may be directly connected, or indirectly connected through an intermediate medium, or may be in communication with each other, or in interaction with each other. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific embodiments.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, 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 invention.
Claims (10)
1. A method for controlling charging of a vehicle-mounted multi-battery, the method comprising:
acquiring state information of each storage battery in a plurality of storage batteries;
when the storage battery is determined to be charged according to the state information of each storage battery in the plurality of storage batteries, a charging request is sent to a whole vehicle communication network, wherein the charging request is used for indicating a voltage regulating module to convert direct current output by the vehicle-mounted power battery so as to charge each storage battery in the plurality of storage batteries;
and regulating the output voltage of the voltage regulating module according to the state information of each storage battery in the plurality of storage batteries so as to meet different charging target voltage grades of the storage batteries.
2. The charge control method according to claim 1, wherein the adjusting the output voltage of the voltage adjustment module according to the state information of each of the plurality of storage batteries includes:
sequencing the current voltages of the plurality of storage batteries according to the state information of each storage battery in the plurality of storage batteries, and determining a minimum voltage value according to sequencing results;
and adjusting the output voltage of the voltage adjusting module according to the minimum voltage value.
3. The charge control method according to claim 2, wherein adjusting the output voltage of the voltage adjustment module according to the minimum voltage value includes:
and when the sum of the minimum voltage value and the preset voltage threshold value is smaller than a second small voltage value, controlling the voltage regulating module to output according to the sum of the minimum voltage value and the preset voltage threshold value.
4. The charge control method according to claim 3, wherein the plurality of storage batteries are charged simultaneously when a voltage difference between each two storage batteries is equal to or smaller than a preset voltage threshold.
5. The charge control method according to claim 2, wherein adjusting the output voltage of the voltage adjustment module according to the minimum voltage value when the plurality of storage batteries includes a first storage battery and a second storage battery, includes:
when the current voltage of the first storage battery is larger than the current voltage of the second storage battery and the pressure difference between the first storage battery and the second storage battery is larger than a preset voltage threshold value, the voltage regulating module is controlled to output according to the sum of the current voltage of the second storage battery and the preset voltage threshold value so as to charge the second storage battery, and the first storage battery and the second storage battery are charged simultaneously until the pressure difference between the first storage battery and the second storage battery is smaller than or equal to the preset voltage threshold value.
6. The charge control method according to any one of claims 1 to 5, characterized in that when the vehicle is in a dormant state, the method further comprises:
waking up the BMS when the storage battery is determined to be charged according to the state information of each storage battery in the plurality of storage batteries;
the BMS acquires state information of the vehicle-mounted power battery, controls the vehicle to enter the dormant state when the vehicle-mounted power battery is determined to be prohibited from discharging according to the state information of the vehicle-mounted power battery, and wakes the voltage regulating module when the vehicle-mounted power battery is determined to be permitted to discharge according to the state information of the vehicle-mounted power battery so as to trigger the voltage regulating module to send self state information to the whole vehicle communication network.
7. The charge control method according to claim 6, characterized in that when the battery is full, the method further comprises:
and acquiring a whole vehicle state, and controlling the vehicle to enter the dormant state when the vehicle-mounted power battery is determined to be allowed to be closed according to the whole vehicle state.
8. A computer-readable storage medium, characterized in that a charge control program is stored thereon, which when executed by a processor, implements the charge control method of the in-vehicle multi-battery according to any one of claims 1 to 7.
9. A vehicle comprising a memory, a processor and a charge control program stored on the memory and operable on the processor, wherein the processor, when executing the charge control program, implements the charge control method for a vehicle-mounted multi-battery of any one of claims 1-7.
10. A charge control system for a vehicle-mounted multi-battery, comprising:
a plurality of storage batteries;
a battery sensor for acquiring state information of each of the plurality of storage batteries;
the vehicle-mounted power battery is used for outputting direct current;
the voltage regulating module is used for converting direct current output by the vehicle-mounted power battery to charge each storage battery in the plurality of storage batteries;
and the vehicle body controller is used for sending a charging request to the whole vehicle communication network when the storage battery is determined to be charged according to the state information of each storage battery in the plurality of storage batteries, wherein the charging request is used for indicating the voltage regulating module to convert direct current output by the vehicle-mounted power battery so as to charge each storage battery in the plurality of storage batteries, and regulating the output voltage of the voltage regulating module according to the state information of each storage battery in the plurality of storage batteries so as to meet different charging target voltage levels of the storage batteries.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211057722.1A CN117674336A (en) | 2022-08-30 | 2022-08-30 | Charging control method and system for vehicle-mounted multi-storage battery, vehicle and medium |
| PCT/CN2023/092790 WO2024045685A1 (en) | 2022-08-30 | 2023-05-08 | Charging control method and system for multiple vehicle-mounted storage batteries, and medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211057722.1A CN117674336A (en) | 2022-08-30 | 2022-08-30 | Charging control method and system for vehicle-mounted multi-storage battery, vehicle and medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117674336A true CN117674336A (en) | 2024-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211057722.1A Pending CN117674336A (en) | 2022-08-30 | 2022-08-30 | Charging control method and system for vehicle-mounted multi-storage battery, vehicle and medium |
Country Status (2)
| Country | Link |
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| CN (1) | CN117674336A (en) |
| WO (1) | WO2024045685A1 (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6303812B2 (en) * | 2014-05-26 | 2018-04-04 | トヨタ自動車株式会社 | Power supply control device and power supply control method |
| CN112533788B (en) * | 2018-10-26 | 2023-12-01 | 康明斯公司 | Battery charging and discharging of multiple battery packs at different states of charge (SOCs) |
| WO2022036580A1 (en) * | 2020-08-19 | 2022-02-24 | 微宏有限责任公司（德国） | Parallel battery management method |
| CN113910979B (en) * | 2021-10-30 | 2023-12-01 | 浙江弗兰克莫里尼新能源有限公司 | Electric vehicle battery control method, system, storage medium and intelligent terminal |
| CN114844191A (en) * | 2022-04-21 | 2022-08-02 | 中国第一汽车股份有限公司 | Intelligent power supplementing method and device, storage medium and electronic device |
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2022
- 2022-08-30 CN CN202211057722.1A patent/CN117674336A/en active Pending
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| WO2024045685A1 (en) | 2024-03-07 |
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