WO2024045685A1 - 车载多蓄电池的充电控制方法、系统及介质 - Google Patents
车载多蓄电池的充电控制方法、系统及介质 Download PDFInfo
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- WO2024045685A1 WO2024045685A1 PCT/CN2023/092790 CN2023092790W WO2024045685A1 WO 2024045685 A1 WO2024045685 A1 WO 2024045685A1 CN 2023092790 W CN2023092790 W CN 2023092790W WO 2024045685 A1 WO2024045685 A1 WO 2024045685A1
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- battery
- voltage
- vehicle
- batteries
- charging
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- 238000000034 method Methods 0.000 title claims abstract description 57
- 230000001105 regulatory effect Effects 0.000 claims abstract description 18
- 238000004891 communication Methods 0.000 claims abstract description 13
- 230000007246 mechanism Effects 0.000 claims description 99
- 238000007599 discharging Methods 0.000 claims description 7
- 230000007958 sleep Effects 0.000 claims description 7
- 230000001276 controlling effect Effects 0.000 claims description 3
- 230000008844 regulatory mechanism Effects 0.000 abstract description 11
- 238000010438 heat treatment Methods 0.000 description 15
- 230000008569 process Effects 0.000 description 14
- 238000010586 diagram Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000003491 array Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000005059 dormancy Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006266 hibernation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000002618 waking effect Effects 0.000 description 1
Classifications
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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
Definitions
- the present disclosure relates to the field of vehicle technology, and in particular, to a charging control method, system and medium for vehicle-mounted multiple batteries.
- the battery charging control scheme is only applicable to scenarios where the vehicle has only one battery. When applied to scenarios where there are multiple batteries in the vehicle, excessive charging current may cause severe heating or trigger the overcurrent protection of the voltage regulation mechanism. And other issues.
- the present disclosure aims to solve one of the technical problems in the related art, at least to a certain extent.
- the first purpose of the present disclosure is to propose a charging control method for multiple on-board batteries.
- the charging control method can effectively control the charging power and charging load, and avoid excessive voltage differences between the output voltage of the voltage adjustment mechanism and the battery voltage. Large, thereby avoiding problems such as serious heating due to excessive charging current or triggering the over-current protection of the voltage regulation mechanism.
- a second object of the present disclosure is to provide a computer-readable storage medium.
- the third object of the present disclosure is to provide a charging control system for multiple on-board batteries.
- the first embodiment of the present disclosure proposes a charging control method for multiple on-board batteries.
- the method includes: obtaining status information of each battery in the plurality of batteries; according to the status of each battery in the plurality of batteries When the information determines that the battery needs to be charged, a charging request is sent to the vehicle communication network, where the charging request is used to instruct the voltage adjustment mechanism to convert the direct current output by the vehicle-mounted power battery to charge each of the multiple batteries; The output voltage of the voltage adjustment mechanism is adjusted according to the status information of each battery in the plurality of batteries to meet different charging target voltage levels of the batteries.
- the output voltage of the voltage adjustment mechanism is dynamically adjusted according to the status information of each battery in the multiple batteries, which can effectively control the charging power and charging load and avoid electric shock.
- the voltage difference between the output voltage of the voltage regulating mechanism and the battery voltage is too large, thereby avoiding problems such as serious heating due to excessive charging current or triggering the overcurrent protection of the voltage regulating mechanism.
- the adjusting the output voltage of the voltage adjustment mechanism according to the status information of each battery in the plurality of batteries includes: adjusting the output voltage of the voltage adjustment mechanism according to the status information of each battery in the plurality of batteries.
- the current voltage of the battery is sorted, and the minimum voltage value is determined according to the sorting result; the output voltage of the voltage adjustment mechanism is adjusted according to the minimum voltage value.
- adjusting the output voltage of the voltage adjustment mechanism according to the minimum voltage value includes: when the sum of the minimum voltage value and a preset voltage threshold is less than a second minimum voltage value, The voltage adjustment mechanism is controlled to output according to the sum of the minimum voltage value and a preset voltage threshold.
- the multiple batteries are charged simultaneously.
- adjusting the output voltage of the voltage adjustment mechanism according to the minimum voltage value includes: in the first When the current voltage of the battery is greater than the current voltage of the second battery and the voltage difference between the first battery and the second battery is greater than the preset voltage threshold, the voltage adjustment mechanism is controlled according to the second battery The sum of the current voltage and the preset voltage threshold is output to charge the second battery until the voltage difference between the first battery and the second battery is less than or equal to the preset voltage threshold. The first battery and the second battery are charged simultaneously.
- the method when the vehicle is in a dormant state, the method further includes: when it is determined that the battery needs to be charged according to the status information of each battery in the plurality of batteries, waking up the BMS; the BMS obtains the vehicle-mounted The status information of the power battery, and when it is determined that the vehicle-mounted power battery is prohibited from discharging according to the status information of the vehicle-mounted power battery, the vehicle is controlled to enter the sleep state, and when it is determined that the vehicle-mounted power battery is allowed to be discharged according to the status information of the vehicle-mounted power battery.
- the voltage adjustment mechanism is awakened to trigger the voltage adjustment mechanism to send its own status information to the vehicle communication network.
- the method when the battery is full, the method further includes: obtaining the status of the entire vehicle, and when it is determined according to the status of the entire vehicle that the vehicle-mounted power battery is allowed to be shut down, controlling the vehicle to enter the state of the vehicle. Sleep state.
- a second embodiment of the present disclosure provides a computer-readable storage medium on which a charging control program is stored.
- the charging control program is executed by a processor, the vehicle-mounted storage medium described in any of the above embodiments is implemented. Charging control method for multiple batteries.
- the output voltage of the voltage adjustment mechanism is dynamically adjusted according to the status information of each battery in the plurality of batteries, which can effectively control the charging power and charging load and avoid the output voltage of the voltage adjustment mechanism being inconsistent with the battery.
- the voltage difference is too large to avoid problems such as serious heating due to excessive charging current or triggering the overcurrent protection of the voltage adjustment mechanism.
- a third embodiment of the present disclosure proposes a charging control system for multiple on-board batteries.
- the charging control system includes: multiple batteries; and a battery sensor for acquiring the status of each battery in the multiple batteries. information; a vehicle-mounted power battery, used to output direct current; a voltage regulating mechanism, used to convert the DC power output by the vehicle-mounted power battery to charge each of the plurality of batteries; a body controller, used to charge each of the plurality of batteries according to the
- a charging request is sent to the vehicle communication network, where the charging request is used to instruct the voltage adjustment mechanism to convert the DC power output by the vehicle-mounted power battery to provide multiple
- the output voltage of the voltage adjustment mechanism is adjusted according to the status information of each battery in the plurality of batteries to meet different charging target voltage levels of the battery.
- the output voltage of the voltage adjustment mechanism is dynamically adjusted according to the status information of each battery in the multiple batteries, which can effectively control the charging power and charging load and avoid the output voltage of the voltage adjustment mechanism.
- the voltage difference with the battery voltage is too large to avoid problems such as serious heating due to excessive charging current or triggering the overcurrent protection of the voltage regulation mechanism.
- Figure 1 is a schematic flowchart of a charging control method for multiple vehicle batteries according to an embodiment of the present disclosure
- Figure 2 is a schematic flowchart of a charging control method for multiple vehicle batteries according to another embodiment of the present disclosure
- Figure 3 is a schematic flowchart of a charging control method for multiple vehicle batteries according to another embodiment of the present disclosure
- Figure 4 is a structural block diagram of a vehicle according to an embodiment of the present disclosure.
- FIG. 5 is a structural block diagram of a vehicle-mounted multi-battery charging control system according to an embodiment of the present disclosure.
- FIG. 1 is a schematic flowchart of a charging control method for multiple vehicle-mounted batteries according to one embodiment of the present disclosure. As shown in Figure 1, the charging control method for multiple vehicle-mounted batteries according to the embodiment of the present disclosure includes:
- S15 Adjust the output voltage of the voltage adjustment mechanism according to the status information of each battery in the plurality of batteries to meet different charging target voltage levels of the batteries.
- the output voltage of the voltage adjustment mechanism is dynamically adjusted according to the status information of each battery in the multiple batteries, which can effectively control the charging power and charging load and avoid the output voltage of the voltage adjustment mechanism.
- the voltage difference with the battery voltage is too large to avoid problems such as serious heating due to excessive charging current or triggering the overcurrent protection of the voltage regulation mechanism. It can be understood that if a fixed output voltage is always used to charge the battery, it means that as soon as the vehicle is started, the battery will be charged until the battery voltage is consistent with the output voltage of the voltage regulating mechanism.
- This charging method relies on the voltage difference between the output voltage and the battery.
- the battery status information may include battery voltage, temperature, SOC (State of Charge), SOH (State of Health) and other information.
- a battery sensor may be provided corresponding to each battery in the plurality of batteries, and then the status information of each battery in the plurality of batteries is obtained through each battery sensor.
- whether the battery needs to be charged can be determined based on the SOC of the battery. For example, when the SOC of a certain battery is less than or equal to the set value, it can be determined that the battery needs to be charged; when the SOC of a certain battery is greater than the set value, it can be determined This battery does not require charging. Scenarios where the battery needs to be charged may include: it is determined that the battery needs to be charged while driving; the vehicle is in a dormant state and the battery is self-discharging, and a risk of battery loss is detected, and it is determined that the battery needs to be charged; during the OTA upgrade process, the battery power is insufficient and the battery needs to be charged ; There may be battery recharge after replacing the battery; other scenarios, etc.
- the vehicle communication network may include a CAN network.
- One charging target voltage level corresponds to an output voltage
- the output voltages corresponding to the multiple charging target voltage levels increase in sequence.
- the first The output voltage corresponding to each charging target voltage level is obtained by adding a certain value to the current voltage.
- the output voltage corresponding to the subsequent charging target voltage level is obtained by adding a certain value to the output voltage corresponding to the previous charging target voltage level. Arrived.
- the output voltage of the voltage adjustment mechanism is set to the output voltage corresponding to the charging target voltage level, so that the battery can be charged to the level corresponding to the charging target voltage level.
- the voltage adjustment mechanism includes a DC-DC (Direct Current Direct Current Converter, DC-DC converter) module.
- DC-DC Direct Current Direct Current Converter, DC-DC converter
- step S15 includes:
- S151 Sort the current voltages of multiple batteries according to the status information of each battery in the multiple batteries, and determine the minimum voltage value based on the sorting results;
- the charging situation of the battery with the smallest voltage value is given priority to avoid the excessive voltage difference between the output voltage and the battery with the smallest voltage value, causing serious heating during the charging process or triggering the overcurrent protection of the voltage regulation mechanism.
- the minimum voltage value, the second smallest voltage value, the third smallest voltage value, ..., the third largest voltage value, the second largest voltage value, etc. can be determined based on the sorting results.
- the current voltage of the battery will change.
- the minimum voltage value among the changed current voltages of the multiple batteries is used. Continue to adjust the output voltage of the voltage regulator mechanism.
- step S153 includes: when the sum of the minimum voltage value and the preset voltage threshold is less than the second minimum voltage value, controlling the voltage adjustment mechanism to output according to the sum of the minimum voltage value and the preset voltage threshold.
- the output voltage of the voltage adjustment mechanism is the sum of the minimum voltage value and the preset voltage threshold
- only the battery corresponding to the minimum voltage value is charging, because the current voltages of the remaining batteries are greater than the sum of the minimum voltage value and the preset voltage threshold. and, therefore the remaining batteries have not started charging yet.
- the preset voltage threshold is determined based on the status information of each battery in multiple batteries. It can be understood that different voltages, different temperatures, different SOC, and different SOH correspond to voltage differences that cause serious heating during the charging process or trigger the overcurrent protection of the voltage adjustment mechanism. Differently, the preset voltage threshold corresponding to the different status information of each battery in multiple batteries can be pre-calibrated through experiments or other methods, or the relationship expression between the status information and the preset voltage threshold can be pre-calibrated, so that when multiple batteries are obtained When receiving the status information of each battery, the corresponding preset voltage threshold can be quickly determined based on the pre-calibrated data.
- step S153 includes: when the sum of the minimum voltage value and the preset voltage threshold is less than the second minimum voltage value, the control voltage adjustment mechanism outputs according to the second smallest voltage value. In this way, the battery with the smallest voltage value is charged to the second smallest voltage value first.
- the multiple batteries when the voltage difference between every two batteries in the multiple batteries is less than or equal to the preset voltage threshold, the multiple batteries are charged simultaneously.
- a preset voltage threshold can be added based on the minimum voltage value to determine the output voltage of the voltage adjustment mechanism.
- the output voltage of the voltage adjustment mechanism can continue to be increased by the preset voltage threshold. , to charge multiple batteries again, and so on until the multiple batteries are fully charged.
- adjusting the output voltage of the voltage adjustment mechanism according to the minimum voltage value includes: when the current voltage of the first battery is greater than the second battery When the current voltage of the second battery and the voltage difference between the first battery and the second battery is greater than the preset voltage threshold, the voltage adjustment mechanism is controlled to output according to the sum of the current voltage of the second battery and the preset voltage threshold to provide the second battery with Charging is performed until the voltage difference between the first battery and the second battery is less than or equal to the preset voltage threshold, and the first battery and the second battery are simultaneously charged.
- the first battery and the second battery with the smallest voltage are charged first, and when the voltages of the first battery and the second battery are close to each other, the first battery and the second battery are charged at the same time to avoid directly charging the two batteries.
- Battery charging causes the voltage difference between the output voltage of the voltage regulator mechanism and the battery with the smallest voltage to be too large, thereby avoiding problems such as severe heating due to excessive charging current or triggering the overcurrent protection of the voltage regulator mechanism.
- the output voltage of the voltage adjustment mechanism is obtained by adding the preset voltage threshold on the basis of the minimum voltage of the voltage of the first battery and the voltage of the second battery, rather than on the basis of the voltage of the first battery and the voltage of the second battery.
- the preset voltage threshold is added based on the maximum voltage of the two batteries and the output voltage of the voltage adjustment mechanism is obtained, so that the voltage difference between the first battery and the second battery will not be too large.
- the number of batteries may also be three, four, or more than four, which is not limited here.
- the preset voltage threshold is determined to be 0.5 based on the status information of each battery in the plurality of batteries, the voltage of the second battery is aV, and the voltage of the first battery is bV, where b-a>0.5, that is, the voltage of the first battery is aV.
- the voltage difference between the battery and the second battery is greater than the preset voltage threshold. Therefore, first control the output voltage of the voltage adjustment mechanism to a+0.5V. At this time, the second battery will start charging, but the first battery will not charge.
- the output voltage of the voltage regulating mechanism is controlled to b+0.5V, so that the first battery and the second battery can be charged at the same time, and then wait until the voltage of the second battery is equal to that of the first battery.
- the output voltage of the voltage regulating mechanism is controlled to be b+1V, and the first battery and the second battery continue to be charged at the same time. This cycle continues until the first battery and the second battery are fully charged.
- the method when the vehicle is in the hibernation state, the method further includes:
- BMS obtains the status information of the vehicle-mounted power battery, and controls the vehicle to enter the sleep state when it is determined that the vehicle-mounted power battery is prohibited from discharging based on the vehicle-mounted power battery status information, and when it is determined that the vehicle-mounted power battery is allowed to discharge based on the vehicle-mounted power battery status information , wake up the voltage adjustment mechanism to trigger the voltage adjustment mechanism to send its own status information to the vehicle communication network.
- both the BMS and the voltage regulating mechanism are in a dormant state.
- the BMS and the voltage regulating mechanism can be awakened in sequence to charge the battery.
- the status information of the vehicle power battery can also be obtained through the set current sensor.
- the status information of the vehicle-mounted power battery may include the temperature, SOC, SOH and other information of the vehicle-mounted power battery.
- the BMS determines to prohibit the vehicle-mounted power battery from discharging, exits the battery charging control process, and controls the vehicle to enter a dormant state or other states; when the vehicle-mounted power battery When the SOC of the battery is greater than 5% of the full charge, the BMS determines that the vehicle power battery is allowed to be discharged.
- the charging request is used to instruct the voltage adjustment mechanism to convert 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 be discharged.
- the status information of the vehicle-mounted power battery can be monitored, so that when the SOC of the vehicle-mounted power battery reaches the set value, the vehicle-mounted power battery is prohibited from discharging and the charging is terminated in a timely manner to ensure safety.
- it can also be monitored whether the actual output voltage of the voltage adjustment mechanism is equal to the charging target voltage level. When it is not equal, the output voltage is compensated and controlled to ensure that the actual output voltage of the voltage adjustment mechanism is consistent with the charging target voltage. The levels are equal; when they are equal, the charge of each battery in the multiple batteries is started to be managed, and the voltage adjustment mechanism is dynamically notified to adjust the output voltage according to the status information of each battery in the multiple batteries.
- the BMS when the BMS allows the vehicle-mounted power battery to discharge, it further determines whether it is allowed to turn on the high voltage. If so, the high voltage is precharged and the high voltage is turned on so that the voltage adjustment mechanism outputs the corresponding voltage; otherwise, Exit the battery charging control process and control the vehicle to enter sleep state or other states.
- step S13 includes:
- the voltage regulating mechanism is instructed to convert the direct current output by the vehicle-mounted power battery to charge each of the plurality of batteries.
- the own status information may include the working status of the voltage adjustment mechanism.
- the method when the battery is full, the method further includes: obtaining the vehicle status, and When the vehicle status is determined to allow the vehicle power battery to be turned off, the vehicle is controlled to enter a dormant state.
- embodiments of the present disclosure also provide a computer-readable storage medium on which a charging control program is stored.
- the charging control program is executed by the processor, the vehicle-mounted multi-storage battery of any of the above embodiments is implemented. Charging control method.
- the output voltage of the voltage adjustment mechanism is dynamically adjusted according to the status information of each battery in the plurality of batteries, which can effectively control the charging power and charging load and avoid the output voltage of the voltage adjustment mechanism being inconsistent with the battery.
- the voltage difference is too large to avoid problems such as serious heating due to excessive charging current or triggering the overcurrent protection of the voltage adjustment mechanism.
- FIG. 4 is a structural block diagram of a vehicle according to an embodiment of the present disclosure.
- the vehicle 100 includes a memory 102, a processor 104 and data stored in the memory. 102 and can run on the processor 104.
- the processor 104 executes the charging control program 106, the charging control method of multiple on-board batteries in any of the above embodiments is implemented.
- the output voltage of the voltage adjustment mechanism is dynamically adjusted according to the status information of each battery in the plurality of batteries, which can effectively control the charging power and charging load and avoid the pressure between the output voltage of the voltage adjustment mechanism and the battery voltage.
- the difference is too large, thereby avoiding problems such as serious heating due to excessive charging current or triggering the over-current protection of the voltage regulation mechanism.
- the vehicle 100 includes, but is not limited to, a pure electric vehicle, a hybrid electric vehicle, an extended-range electric vehicle, a fuel vehicle, etc.
- the charging control system 200 includes multiple batteries 201, a battery sensor (Electronic Battery Sensor, EBS) 202, a vehicle-mounted power battery 203, Voltage regulating mechanism 205 and body control module 206 (Body Control Module, BCM).
- EBS Electronic Battery Sensor
- BCM Body Control Module
- the battery sensor 202 is used to obtain status information of each battery 201 in the plurality of batteries 201 .
- the vehicle power battery 203 is used to output direct current.
- BMS204 is used to allow the vehicle power battery 203 to discharge.
- the voltage regulating mechanism 205 is used to convert the DC power output by the vehicle-mounted power battery 203 to charge each of the plurality of batteries 201 .
- the body controller 206 is used to send a charging request to the vehicle communication network when it determines that the battery 201 needs to be charged based on the status information of each battery 201 in the plurality of batteries 201, where the charging request is used to instruct the voltage regulating mechanism 205 to charge the vehicle power battery.
- the direct current output by 203 is converted to charge each battery 201 in the plurality of batteries 201, and the output voltage of the voltage adjustment mechanism 205 is adjusted according to the status information of each battery 201 in the plurality of batteries 201 to meet the different needs of the batteries 201. Charging target voltage level.
- the output voltage of the voltage adjustment mechanism 205 is dynamically adjusted according to the status information of each battery 201 in the multiple batteries 201, which can effectively control the charging power and charging load to avoid voltage
- the voltage difference between the output voltage of the regulating mechanism 205 and the voltage of the battery 201 is too large, thereby avoiding problems such as severe heating due to excessive charging current or triggering of the overcurrent protection of the voltage regulating mechanism 205 .
- the hardware connection structure of the voltage adjustment mechanism module 205 itself is not changed. Instead, the newly added battery 201 is connected to the battery 201 at the same time by modifying the wiring harness based on the single battery 201 solution.
- the body controller 206 monitors and shares a charging input between the newly added battery 201 and the single battery 201 solution, that is, dividing multiple branches on the connection line between the voltage regulating mechanism 205 and one battery 201, so that multiple batteries 201 are charged through the same output pin of the voltage adjustment mechanism 205, thereby saving costs.
- the voltage adjustment mechanism 205 can support the CAN interface to control the dynamic adjustment of the output voltage, such as the voltage debugging range of 9-16V, so that the voltage adjustment mechanism 205 can use the vehicle communication network (CAN or Other bus interfaces) to receive voltage adjustment messages and dynamically adjust the output voltage, thereby reducing the voltage difference between its output voltage and the voltage of the battery 201 to avoid the risk of overcurrent due to excessive voltage difference.
- the vehicle communication network CAN or Other bus interfaces
- the number of battery sensors 202 may be multiple, that is, one battery sensor 202 may be provided corresponding to each battery 201 and vehicle-mounted power battery 203 among the plurality of batteries 201 .
- the BCM 206 can communicate with the battery sensor 202 through LIN or other bus interfaces, obtain the status information of each battery 201 in multiple batteries 201, and tell the voltage regulation mechanism 205 through CAN to convert the DC output of the vehicle power battery 203 through a charging request. Give multiple batteries Each battery 201 in 201 is charged.
- the output voltage of the voltage adjustment mechanism 205 is determined by the BCM 206 after comprehensive judgment based on the status information of each battery 201 in the plurality of batteries 201, and can be adjusted in real time.
- the charging control system 200 also includes a BMS 204.
- the BMS 204 is used to receive requests from the BCM 206 in certain states. For example, when the vehicle is turned off, the BCM 206 polls the power of each battery 201 in multiple batteries 201 and determines whether the battery needs to be charged. 201 is charging, if so, BMS204 needs to be woken up, and BMS204 needs to confirm whether the vehicle power battery 203 is allowed to be discharged.
- the voltage adjustment mechanism 205 is a DC-DC module. In other embodiments, the voltage adjustment mechanism 205 can also be other modules, which is not limited here.
- a "computer-readable medium” may be any device that can contain, store, communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
- Non-exhaustive list of computer readable media include the following: electrical connections with one or more wires (electronic device), portable computer disk cartridges (magnetic device), random access memory (RAM), Read-only memory (ROM), erasable and programmable read-only memory (EPROM or flash memory), fiber optic devices, and portable compact disc read-only memory (CDROM).
- the computer-readable medium may even be paper or other suitable medium on which the program may be printed, as the paper or other medium may be optically scanned, for example, and subsequently edited, interpreted, or otherwise suitable as necessary. process to obtain the program electronically and then store it in computer memory.
- various parts of the present disclosure may be implemented in hardware, software, firmware, or combinations thereof.
- various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system.
- a logic gate circuit with a logic gate circuit for implementing a logic function on a data signal.
- Discrete logic circuits application specific integrated circuits with suitable combinational logic gates, programmable gate arrays (PGA), field programmable gate arrays (FPGA), etc.
- first and second used in the embodiments of the present disclosure are only used for descriptive purposes and may not be understood to indicate or imply relative importance, or to implicitly indicate what is indicated in this embodiment. number of technical features. Therefore, features defined by terms such as “first” and “second” in the embodiments of the present disclosure may explicitly or implicitly indicate that the embodiment includes at least one of the features.
- the word "plurality” means at least two or two and more, such as two, three, four, etc., unless otherwise clearly and specifically limited in the embodiment.
- connection can It can be a fixed connection, or it can be a detachable connection, or it can be integrated. It can be understood that it can also be a mechanical connection, an electrical connection, etc.; of course, it can also be a direct connection, or an indirect connection through an intermediate medium, or it can be two The internal connection between components, or the interaction between two components.
- connection can It can be a fixed connection, or it can be a detachable connection, or it can be integrated. It can be understood that it can also be a mechanical connection, an electrical connection, etc.; of course, it can also be a direct connection, or an indirect connection through an intermediate medium, or it can be two The internal connection between components, or the interaction between two components.
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Abstract
一种车载多蓄电池的充电控制方法、系统及介质，充电控制方法包括：获取多个蓄电池中每个蓄电池的状态信息(S11)；根据多个蓄电池中每个蓄电池的状态信息确定蓄电池需要充电时，向整车通信网络发送充电请求，其中，充电请求用于指示电压调节机构对车载动力电池输出的直流电进行变换以给多个蓄电池中每个蓄电池充电(S13)；根据多个蓄电池中每个蓄电池的状态信息对电压调节机构的输出电压进行调节，以满足蓄电池的不同充电目标电压等级(S15)。
Description
相关申请的交叉引用
本公开要求于2022年08月30日提交的申请号为202211057722.1，名称为“车载多蓄电池的充电控制方法、系统、车辆及介质”的中国专利申请的优先权，其全部内容通过引用结合在本公开中。
本公开涉及车辆技术领域，尤其涉及一种车载多蓄电池的充电控制方法、系统及介质。
随着高阶辅助驾驶的逐步普及，各大车厂都针对功能安全的考虑推出了整车电气架构的升级，特别是面向L3及以上的场景，推出了各种感知和决策执行机构的冗余，这同时带来了对供电冗余的需求，因此，越来越多的车辆开始集成多个蓄电池来满足对功能安全的需求。
但是，在相关技术中，蓄电池的充电控制方案仅适用于车辆只有一个蓄电池的场景，在应用于车载多蓄电池的场景时，会存在充电电流过大导致发热严重或触发电压调节机构的过流保护等问题。
公开内容
本公开旨在至少在一定程度上解决相关技术中的技术问题之一。为此，本公开的第一个目的在于提出一种车载多蓄电池的充电控制方法，该充电控制方法，能够有效控制充电功率和充电负载，避免电压调节机构的输出电压与蓄电池电压的压差过大，从而避免因充电电流过大导致发热严重或触发电压调节机构的过流保护等问题。
本公开的第二个目的在于提出一种计算机可读存储介质。
本公开的第三个目的在于提出一种车载多蓄电池的充电控制系统。
为达上述目的，本公开第一方面实施例提出一种车载多蓄电池的充电控制方法，所述方法包括：获取多个蓄电池中每个蓄电池的状态信息；根据多个蓄电池中每个蓄电池的状态信息确定蓄电池需要充电时，向整车通信网络发送充电请求，其中，所述充电请求用于指示电压调节机构对所述车载动力电池输出的直流电进行变换以给多个蓄电池中每个蓄电池充电；根据多个蓄电池中每个蓄电池的状态信息对所述电压调节机构的输出电压进行调节，以满足蓄电池的不同充电目标电压等级。
根据本公开实施例的车载多蓄电池的充电控制方法，根据多个蓄电池中每个蓄电池的状态信息动态调整电压调节机构的输出电压，能够有效控制充电功率和充电负载，避免电
压调节机构的输出电压与蓄电池电压的压差过大，从而避免因充电电流过大导致发热严重或触发电压调节机构的过流保护等问题。
在本公开的一些实施例中，所述根据多个蓄电池中每个蓄电池的状态信息对所述电压调节机构的输出电压进行调节，包括：根据多个蓄电池中每个蓄电池的状态信息对多个蓄电池的当前电压进行排序，并根据排序结果确定最小电压值；根据所述最小电压值对所述电压调节机构的输出电压进行调节。
在本公开的一些实施例中，根据所述最小电压值对所述电压调节机构的输出电压进行调节，包括：在所述最小电压值与预设电压阈值之和小于第二小电压值时，控制所述电压调节机构根据所述最小电压值与预设电压阈值之和进行输出。
在本公开的一些实施例中，在多个蓄电池中每两个蓄电池的压差小于等于预设电压阈值时，对所述多个蓄电池同时进行充电。
在本公开的一些实施例中，在所述多个蓄电池包括第一蓄电池和第二蓄电池时，根据所述最小电压值对所述电压调节机构的输出电压进行调节，包括：在所述第一蓄电池的当前电压大于所述第二蓄电池的当前电压、且所述第一蓄电池与所述第二蓄电池之间的压差大于预设电压阈值时，控制所述电压调节机构根据所述第二蓄电池的当前电压与预设电压阈值之和进行输出，以给所述第二蓄电池进行充电，直至所述第一蓄电池与所述第二蓄电池之间的压差小于等于预设电压阈值时对所述第一蓄电池和第二蓄电池进行同时充电。
在本公开的一些实施例中，在车辆处于休眠状态时，所述方法还包括：在根据多个蓄电池中每个蓄电池的状态信息确定蓄电池需要充电时，唤醒BMS；所述BMS获取所述车载动力电池的状态信息，并在根据所述车载动力电池的状态信息确定禁止所述车载动力电池放电时，控制车辆进入所述休眠状态，以及在根据所述车载动力电池的状态信息确定允许所述车载动力电池放电时，唤醒所述电压调节机构，以触发所述电压调节机构向所述整车通信网络发送自身状态信息。
在本公开的一些实施例中，在所述蓄电池充满时，所述方法还包括：获取整车状态，并在根据所述整车状态确定允许所述车载动力电池关闭时，控制车辆进入所述休眠状态。
为达上述目的，本公开第二方面实施例提出了一种计算机可读存储介质，其上存储有充电控制程序，该充电控制程序被处理器执行时，实现上述任一实施例所述的车载多蓄电池的充电控制方法。
根据本公开实施例的计算机可读存储介质，根据多个蓄电池中每个蓄电池的状态信息动态调整电压调节机构的输出电压，能够有效控制充电功率和充电负载，避免电压调节机构的输出电压与蓄电池电压的压差过大，从而避免因充电电流过大导致发热严重或触发电压调节机构的过流保护等问题。
为达上述目的，本公开第三方面实施例提出了一种车载多蓄电池的充电控制系统，所述充电控制系统包括：多个蓄电池；电池传感器，用于获取多个蓄电池中每个蓄电池的状态信息；车载动力电池，用于输出直流电；电压调节机构，用于对所述车载动力电池输出的直流电进行变换以给多个蓄电池中每个蓄电池充电；车身控制器，用于根据多个蓄电池中每个蓄电池的状态信息确定蓄电池需要充电时，向整车通信网络发送充电请求，其中，所述充电请求用于指示所述电压调节机构对所述车载动力电池输出的直流电进行变换以给多个蓄电池中每个蓄电池充电，并根据多个蓄电池中每个蓄电池的状态信息对所述电压调节机构的输出电压进行调节，以满足蓄电池的不同充电目标电压等级。
根据本公开实施例的车载多蓄电池的充电控制系统，根据多个蓄电池中每个蓄电池的状态信息动态调整电压调节机构的输出电压，能够有效控制充电功率和充电负载，避免电压调节机构的输出电压与蓄电池电压的压差过大，从而避免因充电电流过大导致发热严重或触发电压调节机构的过流保护等问题。
本公开附加的方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本公开的实践了解到。
图1是本公开一个实施例的车载多蓄电池的充电控制方法的流程示意图；
图2是本公开另一个实施例的车载多蓄电池的充电控制方法的流程示意图；
图3是本公开另一个实施例的车载多蓄电池的充电控制方法的流程示意图；
图4是本公开一个实施例的车辆的结构框图；
图5是本公开一个实施例的车载多蓄电池的充电控制系统的结构框图。
下面详细描述本公开的实施例，实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本公开，而不能理解为对本公开的限制。
下面结合附图详细描述本公开实施例的车载多蓄电池的充电控制方法、系统及介质。
图1是本公开一个实施例的车载多蓄电池的充电控制方法的流程示意图，如图1所示，本公开实施例车载多蓄电池的充电控制方法包括：
S11：获取多个蓄电池中每个蓄电池的状态信息；
S13：根据多个蓄电池中每个蓄电池的状态信息确定蓄电池需要充电时，向整车通信网络发送充电请求，其中，充电请求用于指示电压调节机构对车载动力电池输出的直流电进
行变换以给多个蓄电池中每个蓄电池充电；
S15：根据多个蓄电池中每个蓄电池的状态信息对电压调节机构的输出电压进行调节，以满足蓄电池的不同充电目标电压等级。
根据本公开实施例的车载多蓄电池的充电控制方法，根据多个蓄电池中每个蓄电池的状态信息动态调整电压调节机构的输出电压，能够有效控制充电功率和充电负载，避免电压调节机构的输出电压与蓄电池电压的压差过大，从而避免因充电电流过大导致发热严重或触发电压调节机构的过流保护等问题。可以理解，如果始终采用某一固定的输出电压对蓄电池进行充电，意味着只要车辆一启动就会一直给蓄电池充电，直到蓄电池电压与电压调节机构的输出电压一致为止。这种依赖输出电压与蓄电池的压差来充电的方式，如果压差过大，在单个蓄电池的情况下相对还好，但是如果多个蓄电池电压都较低，直接输出固定电压进行充电就会导致充电电流过大，进而导致发热严重或触发电压调节机构的过流保护等问题。
具体地，蓄电池的状态信息可包括蓄电池的电压、温度、SOC(State of Charge，电荷状态)、SOH(State of Health，健康状态)等信息。在某些实施例中，可对应多个蓄电池中每个蓄电池分别设置一个电池传感器，进而通过每个电池传感器获取多个蓄电池中每个蓄电池的状态信息。
进一步地，可根据蓄电池的SOC判断蓄电池是否需要充电，例如，当某一蓄电池的SOC小于等于设定值时，可确定该蓄电池需要充电；当某一蓄电池的SOC大于设定值时，可确定该蓄电池不需要充电。蓄电池需要充电的场景可包括：行驶的过程中确定蓄电池需要充电；车辆处于休眠状态蓄电池自放电，检测到有蓄电池有亏电风险，确定蓄电池需要充电；OTA升级过程中蓄电池电量不足需要给蓄电池充电；更换蓄电池后可能存在蓄电池补电；其他场景等。
整车通信网络可包括CAN网络。
可以理解的是，从蓄电池的当前电压至满充电压之间存在多个充电目标电压等级，一个充电目标电压等级对应一个输出电压，多个充电目标电压等级对应的输出电压依次增大，第一个充电目标电压等级对应的输出电压是在当前电压的基础上增加一定值得到的，后续的充电目标电压等级对应的输出电压是在前一充电目标电压等级对应的输出电压的基础上增加一定值得到的。在蓄电池的充电过程中，在确定一个充电目标电压等级对应的输出电压之后，将电压调节机构的输出电压设置为该充电目标电压等级对应的输出电压，这样蓄电池能够充电至该充电目标电压等级对应的输出电压，进而等到蓄电池的电压达到该充电目标电压等级对应的输出电压时，确定下一充电目标电压等级对应的输出电压，并将电压调节机构的输出电压设置为下一充电目标电压等级对应的输出电压，如此，可以将多个蓄
电池一级级地充电至满充电压，防止因蓄电池的电压与电压调节机构的输出电压之间的压差过大导致充电过程发热严重或触发电压调节机构的过流保护。
在某些实施例中，电压调节机构包括DC-DC(Direct Current Direct Current Converter，直流直流转换器)模块。
请结合图2，在本公开的一些实施例中，步骤S15包括：
S151：根据多个蓄电池中每个蓄电池的状态信息对多个蓄电池的当前电压进行排序，并根据排序结果确定最小电压值；
S153：根据最小电压值对电压调节机构的输出电压进行调节。
如此，优先考虑电压值最小的蓄电池的充电情况，避免输出电压与电压值最小的蓄电池的压差过大导致充电过程发热严重或触发电压调节机构的过流保护。
具体地，如果按照由小到大的顺序进行排序，那么根据排序结果可依次确定最小电压值、第二小电压值、第三小电压值、...、第三大电压值、第二大电压值和最大电压值，其中，最小电压值小于等于第二小电压值，第二小电压值小于等于第三小电压值，...，第三大电压值小于等于第二大电压值，第二大电压值小于等于最大电压值。
可以理解的是，在蓄电池充电过程中，蓄电池的当前电压会发生变化，在本公开实施例中，在蓄电池的当前电压发生变化时，根据变化后的多个蓄电池的当前电压中的最小电压值继续对电压调节机构的输出电压进行调节。
在本公开的一些实施例中，步骤S153包括：在最小电压值与预设电压阈值之和小于第二小电压值时，控制电压调节机构根据最小电压值与预设电压阈值之和进行输出。
如此，优先对电压值最小的蓄电池进行充电，降低电压值最小的蓄电池与剩余蓄电池的压差，避免输出电压与电压值最小的蓄电池的压差过大导致充电过程发热严重或触发电压调节机构的过流保护。
具体地，在电压调节机构的输出电压为最小电压值与预设电压阈值之和时，只有最小电压值对应的蓄电池在充电，由于剩余蓄电池的当前电压均大于最小电压值与预设电压阈值之和，因此剩余蓄电池暂未开始充电。
预设电压阈值根据多个蓄电池中每个蓄电池的状态信息确定，可以理解，不同电压、不同温度、不同SOC、不同SOH对应的导致充电过程发热严重或触发电压调节机构的过流保护的压差不同，可通过实验等方式预先标定多个蓄电池中每个蓄电池的不同状态信息对应的预设电压阈值，或者预先标定状态信息与预设电压阈值的关系表达式，这样在获取到多个蓄电池中每个蓄电池的状态信息时，可以结合预先标定的数据快速确定对应的预设电压阈值。
在某些实施例中，步骤S153包括：在最小电压值与预设电压阈值之和小于第二小电压
值时，控制电压调节机构根据第二小电压值进行输出。如此，使得电压值最小的蓄电池首先充电至第二小电压值。
在本公开的一些实施例中，在多个蓄电池中每两个蓄电池的压差小于等于预设电压阈值时，对多个蓄电池同时进行充电。
如此，保证充电效率的同时，避免出现过流、过热现象。
具体地，可以在最小电压值的基础上增加预设电压阈值以确定电压调节机构的输出电压，等到多个蓄电池的电压达到该输出电压时，将电压调节机构的输出电压继续增加预设电压阈值，以再次对多个蓄电池充电，如此循环，直至多个蓄电池充满。
在本公开的一些实施例中，在多个蓄电池包括第一蓄电池和第二蓄电池时，根据最小电压值对电压调节机构的输出电压进行调节，包括：在第一蓄电池的当前电压大于第二蓄电池的当前电压、且第一蓄电池与第二蓄电池之间的压差大于预设电压阈值时，控制电压调节机构根据第二蓄电池的当前电压与预设电压阈值之和进行输出，以给第二蓄电池进行充电，直至第一蓄电池与第二蓄电池之间的压差小于等于预设电压阈值时对第一蓄电池和第二蓄电池进行同时充电。
如此，优先对第一蓄电池和第二蓄电池中的电压最小者进行充电，等到第一蓄电池与第二蓄电池的电压接近时，再同时对第一蓄电池和第二蓄电池进行充电，避免直接给两个蓄电池充电导致电压调节机构的输出电压与电压最小的蓄电池的压差过大，从而避免因充电电流过大导致发热严重或触发电压调节机构的过流保护等问题。可以理解的是，由于是在第一蓄电池的电压与第二蓄电池的电压中的最小电压的基础上增加预设电压阈值并获得电压调节机构的输出电压，而不是在第一蓄电池的电压与第二蓄电池的电压中的最大电压的基础上增加预设电压阈值并获得电压调节机构的输出电压，因此第一蓄电池和第二蓄电池均不会出现压差过大的情况。
在其他实施例中，蓄电池的数量也可为三个、四个或者大于四个，在此不作限定。
在一个例子中，根据多个蓄电池中每个蓄电池的状态信息确定预设电压阈值为0.5，第二蓄电池的电压为aV，第一蓄电池的电压为bV，其中，b-a＞0.5，也即第一蓄电池与第二蓄电池的压差大于预设电压阈值，因此，首先控制电压调节机构的输出电压为a+0.5V，此时第二蓄电池就会开始充电，而第一蓄电池不充电，等到第二蓄电池的电压与第一蓄电池的电压接近时，控制电压调节机构的输出电压为b+0.5V，这样可以同时给第一蓄电池和第二蓄电池充电，进而等到第二蓄电池的电压和第一蓄电池的电压均达到b+0.5V时，控制电压调节机构的输出电压为b+1V，继续同时给第一蓄电池和第二蓄电池充电，如此循环，直至第一蓄电池和第二蓄电池充满。
在本公开的一些实施例中，在车辆处于休眠状态时，方法还包括：
S17：在根据多个蓄电池中每个蓄电池的状态信息确定蓄电池需要充电时，唤醒BMS(Battery Management System，电池管理系统)；
S19：BMS获取车载动力电池的状态信息，并在根据车载动力电池的状态信息确定禁止车载动力电池放电时，控制车辆进入休眠状态，以及在根据车载动力电池的状态信息确定允许车载动力电池放电时，唤醒电压调节机构，以触发电压调节机构向整车通信网络发送自身状态信息。
如此，在车辆处于休眠状态时，通过监测多个蓄电池中每个蓄电池的状态信息，能够及时发现蓄电池的亏电状态，并对蓄电池进行充电。
具体地，在车辆处于休眠状态时，BMS和电压调节机构均处于休眠状态，但是当监测到有蓄电池需要充电时，可以依次唤醒BMS和电压调节机构来给蓄电池充电。车载动力电池的状态信息也可通过设置的电流传感器获取。车载动力电池的状态信息可包括车载动力电池的温度、SOC、SOH等信息。
在某些实施例中，当车载动力电池的SOC小于等于满电量的5％时，BMS确定禁止车载动力电池放电，退出蓄电池的充电控制流程，并控制车辆进入休眠状态或者其他状态；当车载动力电池的SOC大于满电量的5％时，BMS确定允许车载动力电池放电。在某些实施例中，充电请求用于在BMS允许车载动力电池放电时指示电压调节机构对所述车载动力电池输出的直流电进行变换以给多个蓄电池中每个蓄电池充电。
需要指出的是，在充电过程中，可监控车载动力电池的状态信息，从而在车载动力电池的SOC低到设定值时，禁止车载动力电池放电，并及时退出充电，保证安全。此外，在充电过程中，还可监控电压调节机构的实际输出电压是否与充电目标电压等级相等，在不相等时，对输出电压进行补偿控制，从而保证电压调节机构的实际输出电压与充电目标电压等级相等；在相等时，开始管理多个蓄电池中每个蓄电池的充电，并根据多个蓄电池中每个蓄电池的状态信息动态通知电压调节机构调节输出电压。
请结合图3，在某些实施例中，在BMS允许车载动力电池放电时，进一步判断是否允许开启高压，若是，则进行高压预充并开启高压，以便电压调节机构输出相应的电压；否则，退出蓄电池的充电控制流程，并控制车辆进入休眠状态或者其他状态。
在本公开的一些实施例中，步骤S13包括：
S131：在根据自身状态信息确定电压调节机构唤醒时，向整车通信网络发送充电请求。
如此，指示电压调节机构对车载动力电池输出的直流电进行变换以给多个蓄电池中每个蓄电池充电。
具体地，自身状态信息可包括电压调节机构的工作状态。
在本公开的一些实施例中，在蓄电池充满时，方法还包括：获取整车状态，并在根据
整车状态确定允许车载动力电池关闭时，控制车辆进入休眠状态。
如此，在蓄电池充满时，根据整车状态判断是否继续进入休眠状态或者其他状态。可以理解的是，在车辆处于休眠过程中，用户可能无用车需求，但是在对蓄电池充电的过程中，用户可能产生用车需求，因此在蓄电池充满时需要进一步判断整车状态是否允许关闭车载动力电池，以免行车过程中突然发生断电造成交通事故。
具体地，在根据整车状态确定车载动力电池正在为充电外的其他功能供电时，确定禁止车载动力电池关闭。
需要指出的是，上述所提到的具体数值只为了作为例子详细说明本公开的实施，而不应理解为对本公开的限制。在其它例子或实施方式或实施例中，可根据本公开来选择其它数值，在此不作具体限定。
为实现上述实施例，本公开实施例还提出了一种计算机可读存储介质，其上存储有充电控制程序，该充电控制程序被处理器执行时，实现上述任一实施例的车载多蓄电池的充电控制方法。
根据本公开实施例的计算机可读存储介质，根据多个蓄电池中每个蓄电池的状态信息动态调整电压调节机构的输出电压，能够有效控制充电功率和充电负载，避免电压调节机构的输出电压与蓄电池电压的压差过大，从而避免因充电电流过大导致发热严重或触发电压调节机构的过流保护等问题。
需要指出的是，上述对车载多蓄电池的充电控制方法的实施例和有益效果的解释说明，也适应本公开实施例的计算机可读存储介质，为避免冗余，在此不作详细展开。
为实现上述实施例，本公开实施例还提出了一种车辆，图4是本公开一个实施例的车辆的结构框图，如图4所示，车辆100包括存储器102、处理器104及存储在存储器102上并可在处理器104上运行的充电控制程序106，处理器104执行充电控制程序106时，实现上述任一实施例的车载多蓄电池的充电控制方法。
根据本公开实施例的车辆100，根据多个蓄电池中每个蓄电池的状态信息动态调整电压调节机构的输出电压，能够有效控制充电功率和充电负载，避免电压调节机构的输出电压与蓄电池电压的压差过大，从而避免因充电电流过大导致发热严重或触发电压调节机构的过流保护等问题。
具体地，车辆100包括但不限于纯电动车、混合动力电动车、增程式电动车、燃油车等。
需要指出的是，上述对车载多蓄电池的充电控制方法的实施例和有益效果的解释说明，也适应本公开实施例的车辆100，为避免冗余，在此不作详细展开。
为实现上述实施例，本公开实施例还提出了一种车载多蓄电池的充电控制系统，图5
是本公开一个实施例的车载多蓄电池的充电控制系统的结构框图，如图5所示，充电控制系统200包括多个蓄电池201、电池传感器(Electronic Battery Sensor，EBS)202、车载动力电池203、电压调节机构205和车身控制器206(Body Control Module，BCM)。电池传感器202用于获取多个蓄电池201中每个蓄电池201的状态信息。车载动力电池203用于输出直流电。BMS204用于允许车载动力电池203放电。电压调节机构205用于对车载动力电池203输出的直流电进行变换以给多个蓄电池201中每个蓄电池201充电。车身控制器206用于根据多个蓄电池201中每个蓄电池201的状态信息确定蓄电池201需要充电时，向整车通信网络发送充电请求，其中，充电请求用于指示电压调节机构205对车载动力电池203输出的直流电进行变换以给多个蓄电池201中每个蓄电池201充电，并根据多个蓄电池201中每个蓄电池201的状态信息对电压调节机构205的输出电压进行调节，以满足蓄电池201的不同充电目标电压等级。
根据本公开实施例的车载多蓄电池201的充电控制系统200，根据多个蓄电池201中每个蓄电池201的状态信息动态调整电压调节机构205的输出电压，能够有效控制充电功率和充电负载，避免电压调节机构205的输出电压与蓄电池201电压的压差过大，从而避免因充电电流过大导致发热严重或触发电压调节机构205的过流保护等问题。
可以理解，在采用一个电压调节机构为多个蓄电池输出电压时，如果在电压调节机构上同时输出多路来分别给蓄电池充电，即一个电压调节存在对应多个蓄电池的多个输出引脚，需要重新设计电压调节机构，并且当需要增大电压调节机构的输出功率时，还需要重新设计电压调节机构，从而成本较高。
而在本公开实施例的充电控制系统中，不改变电压调节机构模块205自身的硬件连接架构，而是在单蓄电池201方案的基础上通过修改线束的方式，将新增的蓄电池201同时接到车身控制器206来监控，并将新增的蓄电池201与单蓄电池201方案共享一路充电输入，即在电压调节机构205与一个蓄电池201的连接线上分出多条支路，从而使得多个蓄电池201均通过电压调节机构205的同一输出引脚进行充电，从而节省成本。并且通过升级电压调节机构205的软件的方式，使得电压调节机构205能够支持CAN接口控制输出电压动态调节，如9-16V的电压调试范围，从而电压调节机构205可以通过整车通信网络(CAN或者其他总线接口)来接收电压调节报文并动态调整输出电压，由此，减小其输出电压与蓄电池201电压的压差以避免出现压差过大产生过流风险。
具体地，电池传感器202的数量可为多个，即可对应多个蓄电池201中每个蓄电池201和车载动力电池203设置一个电池传感器202。BCM206可通过LIN或其他总线接口与电池传感器202通讯，获取多个蓄电池201中每个蓄电池201的状态信息，并通过CAN通过充电请求告诉电压调节机构205对车载动力电池203输出的直流电进行变换以给多个蓄电池
201中每个蓄电池201充电。电压调节机构205的输出电压是BCM206根据多个蓄电池201中每个蓄电池201的状态信息综合判断之后来决定，并可以实时调节。
充电控制系统200还包括BMS204，BMS204用于接收BCM206在某些状态下的请求，例如，在车辆熄火状态下，BCM206轮询多个蓄电池201中每个蓄电池201的电量，并判断是否需要给蓄电池201充电，若是，就需要唤醒BMS204，BMS204需要确认车载动力电池203是否允许放电。
在图5所示的实施例中，电压调节机构205为DC-DC模块，在其他实施例中，电压调节机构205也可为其他模块，在此不作限定。
需要指出的是，上述对车载多蓄电池201的充电控制方法的实施例和有益效果的解释说明，也适应本公开实施例的车载多蓄电池201的充电控制系统200，为避免冗余，在此不作详细展开。
需要说明的是，在流程图中表示或在此以其他方式描述的逻辑和/或步骤，例如，可以被认为是用于实现逻辑功能的可执行指令的定序列表，可以具体实现在任何计算机可读介质中，以供指令执行系统、装置或设备(如基于计算机的系统、包括处理器的系统或其他可以从指令执行系统、装置或设备取指令并执行指令的系统)使用，或结合这些指令执行系统、装置或设备而使用。就本说明书而言，“计算机可读介质”可以是任何可以包含、存储、通信、传播或传输程序以供指令执行系统、装置或设备或结合这些指令执行系统、装置或设备而使用的装置。计算机可读介质的更具体的示例(非穷尽性列表)包括以下：具有一个或多个布线的电连接部(电子装置)，便携式计算机盘盒(磁装置)，随机存取存储器(RAM)，只读存储器(ROM)，可擦除可编辑只读存储器(EPROM或闪速存储器)，光纤装置，以及便携式光盘只读存储器(CDROM)。另外，计算机可读介质甚至可以是可在其上打印所述程序的纸或其他合适的介质，因为可以例如通过对纸或其他介质进行光学扫描，接着进行编辑、解译或必要时以其他合适方式进行处理来以电子方式获得所述程序，然后将其存储在计算机存储器中。
应当理解，本公开的各部分可以用硬件、软件、固件或它们的组合来实现。在上述实施方式中，多个步骤或方法可以用存储在存储器中且由合适的指令执行系统执行的软件或固件来实现。例如，如果用硬件来实现，和在另一实施方式中一样，可用本领域公知的下列技术中的任一项或他们的组合来实现：具有用于对数据信号实现逻辑功能的逻辑门电路的离散逻辑电路，具有合适的组合逻辑门电路的专用集成电路，可编程门阵列(PGA)，现场可编程门阵列(FPGA)等。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含
于本公开的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
此外，本公开实施例中所使用的“第一”、“第二”等术语，仅用于描述目的，而不可以理解为指示或者暗示相对重要性，或者隐含指明本实施例中所指示的技术特征数量。由此，本公开实施例中限定有“第一”、“第二”等术语的特征，可以明确或者隐含地表示该实施例中包括至少一个该特征。在本公开的描述中，词语“多个”的含义是至少两个或者两个及以上，例如两个、三个、四个等，除非实施例中另有明确具体的限定。
在本公开中，除非实施例中另有明确的相关规定或者限定，否则实施例中出现的术语“安装”、“相连”、“连接”和“固定”等应做广义理解，例如，连接可以是固定连接，也可以是可拆卸连接，或成一体，可以理解的，也可以是机械连接、电连接等；当然，还可以是直接相连，或者通过中间媒介进行间接连接，或者可以是两个元件内部的连通，或者两个元件的相互作用关系。对于本领域的普通技术人员而言，能够根据具体的实施情况理解上述术语在本公开中的具体含义。
尽管上面已经示出和描述了本公开的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本公开的限制，本领域的普通技术人员在本公开的范围内可以对上述实施例进行变化、修改、替换和变型。
Claims (10)
- 一种车载多蓄电池的充电控制方法，所述方法包括：获取多个蓄电池中每个蓄电池的状态信息；根据多个蓄电池中每个蓄电池的状态信息确定蓄电池需要充电时，向整车通信网络发送充电请求，其中，所述充电请求用于指示电压调节机构对所述车载动力电池输出的直流电进行变换以给多个蓄电池中每个蓄电池充电；根据多个蓄电池中每个蓄电池的状态信息对所述电压调节机构的输出电压进行调节，以满足蓄电池的不同充电目标电压等级。
- 根据权利要求1所述的充电控制方法，其中，所述根据多个蓄电池中每个蓄电池的状态信息对所述电压调节机构的输出电压进行调节，包括：根据多个蓄电池中每个蓄电池的状态信息对多个蓄电池的当前电压进行排序，并根据排序结果确定最小电压值；根据所述最小电压值对所述电压调节机构的输出电压进行调节。
- 根据权利要求2所述的充电控制方法，其中，根据所述最小电压值对所述电压调节机构的输出电压进行调节，包括：在所述最小电压值与预设电压阈值之和小于第二小电压值时，控制所述电压调节机构根据所述最小电压值与预设电压阈值之和进行输出。
- 根据权利要求3所述的充电控制方法，其中，在多个蓄电池中每两个蓄电池的压差小于等于预设电压阈值时，对所述多个蓄电池同时进行充电。
- 根据权利要求2所述的充电控制方法，其中，在所述多个蓄电池包括第一蓄电池和第二蓄电池时，根据所述最小电压值对所述电压调节机构的输出电压进行调节，包括：在所述第一蓄电池的当前电压大于所述第二蓄电池的当前电压、且所述第一蓄电池与所述第二蓄电池之间的压差大于预设电压阈值时，控制所述电压调节机构根据所述第二蓄电池的当前电压与预设电压阈值之和进行输出，以给所述第二蓄电池进行充电，直至所述第一蓄电池与所述第二蓄电池之间的压差小于等于预设电压阈值时对所述第一蓄电池和第二蓄电池进行同时充电。
- 根据权利要求1-5中任一项所述的充电控制方法，其中，在车辆处于休眠状态时，所述方法还包括：在根据多个蓄电池中每个蓄电池的状态信息确定蓄电池需要充电时，唤醒BMS；所述BMS获取所述车载动力电池的状态信息，并在根据所述车载动力电池的状态信息确定禁止所述车载动力电池放电时，控制车辆进入所述休眠状态，以及在根据所述车载动 力电池的状态信息确定允许所述车载动力电池放电时，唤醒所述电压调节机构，以触发所述电压调节机构向所述整车通信网络发送自身状态信息。
- 根据权利要求6所述的充电控制方法，其中，在所述蓄电池充满时，所述方法还包括：获取整车状态，并在根据所述整车状态确定允许所述车载动力电池关闭时，控制车辆进入所述休眠状态。
- 一种计算机可读存储介质，其上存储有充电控制程序，该充电控制程序被处理器执行时，实现权利要求1-7中任一项所述的车载多蓄电池的充电控制方法。
- 根据权利要求8所述的计算机可读存储介质，应用于车辆，所述车辆包括存储器、处理器及存储在存储器上并可在处理器上运行的充电控制程序，所述处理器执行所述充电控制程序时，实现权利要求1-7中任一项所述的车载多蓄电池的充电控制方法。
- 一种车载多蓄电池的充电控制系统，包括：多个蓄电池；电池传感器，用于获取多个蓄电池中每个蓄电池的状态信息；车载动力电池，用于输出直流电；电压调节机构，用于对所述车载动力电池输出的直流电进行变换以给多个蓄电池中每个蓄电池充电；车身控制器，用于根据多个蓄电池中每个蓄电池的状态信息确定蓄电池需要充电时，向整车通信网络发送充电请求，其中，所述充电请求用于指示所述电压调节机构对所述车载动力电池输出的直流电进行变换以给多个蓄电池中每个蓄电池充电，并根据多个蓄电池中每个蓄电池的状态信息对所述电压调节机构的输出电压进行调节，以满足蓄电池的不同充电目标电压等级。
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105291870A (zh) * | 2014-05-26 | 2016-02-03 | 丰田自动车株式会社 | 电源控制装置和电源控制方法 |
| CN112533788A (zh) * | 2018-10-26 | 2021-03-19 | 康明斯公司 | 处于不同荷电状态(soc)的多个电池组的电池充电和放电 |
| CN113910979A (zh) * | 2021-10-30 | 2022-01-11 | 浙江弗兰克莫里尼新能源有限公司 | 一种电动车电池控制方法、系统、存储介质及智能终端 |
| WO2022036580A1 (zh) * | 2020-08-19 | 2022-02-24 | 微宏有限责任公司（德国） | 一种并联电池管理方法 |
| CN114844191A (zh) * | 2022-04-21 | 2022-08-02 | 中国第一汽车股份有限公司 | 智能补电方法、装置、存储介质及电子装置 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105291870A (zh) * | 2014-05-26 | 2016-02-03 | 丰田自动车株式会社 | 电源控制装置和电源控制方法 |
| CN112533788A (zh) * | 2018-10-26 | 2021-03-19 | 康明斯公司 | 处于不同荷电状态(soc)的多个电池组的电池充电和放电 |
| WO2022036580A1 (zh) * | 2020-08-19 | 2022-02-24 | 微宏有限责任公司（德国） | 一种并联电池管理方法 |
| CN113910979A (zh) * | 2021-10-30 | 2022-01-11 | 浙江弗兰克莫里尼新能源有限公司 | 一种电动车电池控制方法、系统、存储介质及智能终端 |
| CN114844191A (zh) * | 2022-04-21 | 2022-08-02 | 中国第一汽车股份有限公司 | 智能补电方法、装置、存储介质及电子装置 |
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