WO2019042437A1 - 电池信息采集器、电池均衡系统、车辆、方法及存储介质 - Google Patents

电池信息采集器、电池均衡系统、车辆、方法及存储介质 Download PDF

Info

Publication number
WO2019042437A1
WO2019042437A1 PCT/CN2018/103681 CN2018103681W WO2019042437A1 WO 2019042437 A1 WO2019042437 A1 WO 2019042437A1 CN 2018103681 W CN2018103681 W CN 2018103681W WO 2019042437 A1 WO2019042437 A1 WO 2019042437A1
Authority
WO
WIPO (PCT)
Prior art keywords
equalization
battery
module
information collector
control module
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2018/103681
Other languages
English (en)
French (fr)
Inventor
罗红斌
王超
沈晓峰
曾求勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BYD Co Ltd
Original Assignee
BYD Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BYD Co Ltd filed Critical BYD Co Ltd
Publication of WO2019042437A1 publication Critical patent/WO2019042437A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/50—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries acting upon multiple batteries simultaneously or sequentially
    • H02J7/52—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries acting upon multiple batteries simultaneously or sequentially for charge balancing, e.g. equalisation of charge between batteries
    • H02J7/56—Active balancing, e.g. using capacitor-based, inductor-based or DC-DC converters
    • 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
    • B60L58/20—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 having different nominal voltages
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • the present application relates to the field of battery pack equalization, and in particular to a battery information collector, a battery equalization system, a vehicle, a method, and a storage medium.
  • battery packs are an important part of it. Since the battery pack is formed by connecting a plurality of single cells in series, the difference between the cells in the battery pack gradually increases with the use of the battery, resulting in poor consistency between the battery cells. Due to the short board effect of the battery, the battery pack capacity cannot be fully utilized, resulting in a decrease in the overall capacity of the battery pack. Therefore, effective balancing management of the battery pack of the electric vehicle is beneficial to improving the consistency of each unit battery in the battery pack, reducing the capacity loss of the battery, prolonging the service life of the battery and the driving range of the electric vehicle. significance.
  • the battery management controller After determining that the equalization needs to be started and the equalization cumulative time calculation is completed, the battery management controller needs to send an equalization execution command indicating the remaining equalization time to the battery information collector in real time. During the process in which the battery management controller sends the equalization execution command indicating the remaining equalization time multiple times, it is easy to balance the battery due to failure conditions such as communication failure, thereby affecting the battery balancing effect.
  • the purpose of the present application is to provide a battery information collector, a battery equalization system, a vehicle, a method, and a storage medium for solving the technical problem that the battery cannot be balanced due to a failure condition such as a communication failure in the battery equalization system of the related art.
  • the present application provides a battery information collector, including an acquisition module, an equalization module, a control module, and a storage module;
  • the collecting module is configured to collect parameter information of the battery pack
  • the storage module is configured to receive and store an equalization instruction, where the equalization instruction is generated according to parameter information of the battery pack;
  • the control module is connected to the collection module and the equalization module, and controls the equalization module to perform equalization processing on the single cells that need to be balanced according to the equalization command stored by the storage module.
  • control module generates the equalization instruction according to parameter information of the battery group collected by the collection module.
  • the equalization instruction is generated by the battery management controller according to the parameter information of the battery group collected by the collection module.
  • the battery information collector further includes an interface connected to the battery management controller, the interface is configured to transmit parameter information of the battery group to the battery management controller;
  • the control module is further configured to: receive a control instruction sent by the battery management controller, and start or stop controlling, according to the control instruction, the equalization module to perform equalization processing on the single battery that needs to be turned on and equalized;
  • the control instruction includes at least one of a first equalization instruction and a second equalization instruction, and a failure message instruction of the battery management controller;
  • the first equalization command is an equalization command for instructing the battery information collector to perform equalization processing
  • the second equalization command is an equalization instruction for instructing the battery information collector to stop performing equalization processing
  • control module is further configured to: after the preset time period, the storage module does not receive the first equalization command sent by the battery management controller and does not receive the second information sent by the battery management controller And the equalizing instruction is generated according to the parameter information of the battery pack collected by the collecting module, and the equalizing instruction is sent to the storage module for storage, and the equalizing module controls the balancing of the need to be started.
  • the single cells are equalized.
  • the control module of the battery information collector when receiving the first equalization command sent by the battery manager, sends the first equalization instruction as the equalization instruction to the storage module for storage, and According to the control, the equalization module performs equalization processing on the single cells that need to be turned on.
  • control module is further configured to: when receiving the fault message of the battery management controller, generate the equalization command according to the parameter information of the battery group, and send the equalization command to the storage module To store and control the equalization module to perform equalization processing on the single cells that need to be turned on.
  • the equalization command includes a target equalization time required to equalize a cell that needs to be turned on.
  • control module is respectively connected to the acquisition module and the equalization module corresponding to the same single cell through two channels.
  • control module includes a control chip, and the control chip is respectively connected to an acquisition module and an equalization module corresponding to the same single cell through two pins, and the two pins are connected to the two channels.
  • the control chip is respectively connected to an acquisition module and an equalization module corresponding to the same single cell through two pins, and the two pins are connected to the two channels.
  • one of the two pins is connected to the equalization module through one of the two channels, and the other of the two pins passes through the two channels.
  • Another channel is connected to the acquisition module.
  • control module is connected to the acquisition module and the equalization module corresponding to the same single cell through a channel, and the acquisition module and the equalization module time-multiplex the channel;
  • the control module is configured to control the control module to connect with a corresponding collection module through the channel when determining that the single battery does not need to be equalized;
  • the control module is further configured to connect to the corresponding acquisition module and the equalization module through the channel when the cell needs to be equalized.
  • control module includes a control chip, and the control chip is connected to an acquisition module and an equalization module corresponding to the same single cell through a pin, and the pin passes through the channel and the equalization module and the The acquisition module is connected.
  • the storage module is further configured to store an equalization duty ratio, where the equalization duty ratio is a ratio of a duration occupied by the equalization module to the channel to a total duration occupied by the channel; and
  • the control module is further configured to control the equalization module to perform equalization processing on the single-cell that needs to be turned on according to the target equalization duration and the equalization duty ratio of the unit cells that are required to be turned on.
  • the application also provides a battery equalization system including a battery management controller and the above battery information collector, a battery management controller and a battery information collector.
  • the battery management controller is configured to calculate, according to the parameter information of the battery pack collected by the collection module, a target equalization time required for balancing the single battery when determining that the balanced single battery needs to be turned on, And storing the target equalization time in the storage module, and controlling the equalization module to perform equalization processing on the single-cell that needs to be balanced according to the target equalization duration.
  • control module of the battery information collector when the control module of the battery information collector receives the fault message of the battery management controller, the control module of the battery information collector is configured to receive parameter information of the battery pack, and according to the battery The parameter information of the group generates an equalization instruction and sends the equalization instruction to the storage module for storage, and controls the equalization module to perform equalization processing on the single battery that needs to be turned on.
  • the storage module of the battery information collector is further configured to store at least one of the following information:
  • the battery pack is equalized statistically after the battery is fully charged or when the vehicle is in the OFF position.
  • control module of the battery information collector is further configured to prompt the single battery when a statistical number of the single battery to be the highest voltage value or the lowest voltage value in the battery group exceeds a first preset value Need to be replaced.
  • control module of the battery information collector is further configured to prompt to replace the battery pack when the statistical number of times when the battery pack is fully charged or when the vehicle is in the OFF position is greater than a second preset value.
  • the application also provides a vehicle including the battery equalization system described above.
  • the battery information collector of the present application is capable of storing an equalization instruction for indicating a single battery in the battery pack that needs to be turned on to be balanced, and the battery information collector cannot receive the equalization command sent by the battery management controller.
  • the equalization module can perform equalization processing on the single battery that needs to be balanced according to the equalization instruction stored in the storage module, and solve the problem that the battery cannot be balanced due to failure conditions such as communication failure, and improve the reliability of the balance. Sex.
  • FIG. 1 is a block diagram of a battery information collector according to an exemplary embodiment
  • FIG. 2 is another block diagram of a battery information collector according to an exemplary embodiment
  • FIG. 3 is another block diagram of a battery information collector according to an exemplary embodiment
  • FIG. 4 is a block diagram of a battery equalization system, according to an exemplary embodiment
  • FIG. 5 is a flowchart of a battery equalization method according to an exemplary embodiment
  • FIG. 6 is a block schematic diagram of a vehicle according to an exemplary embodiment.
  • FIG. 1 is a block diagram of a battery information collector according to an exemplary embodiment
  • FIG. 2 is another block diagram of a battery information collector according to an exemplary embodiment.
  • the battery information collector 10 includes an acquisition module 12 for collecting parameter information of the battery pack 11, a control module 14, a storage module 15, and an equalization module 13, wherein the battery pack 11 It is made up of a plurality of single cells connected in series.
  • the control module 14 is connected to the acquisition module 12 and the equalization module 13 corresponding to the same unit cell 111 via two channels 120, 130, respectively.
  • the two channels 120, 130 are connected in one-to-one correspondence with the acquisition module 12 and the equalization module 13 corresponding to the same unit cell 111.
  • the control module 14 includes a control chip, and the control chip is respectively connected to the acquisition module 12 and the equalization module 13 corresponding to the same single cell 111 through two pins, and the two pins and the two channels 120 One-to-one correspondence, one of the two pins is connected to the equalization module 13 through the channel 130, and the other of the two pins passes through the channel 120 and the The acquisition module 12 is connected.
  • the collecting module 12 is configured to collect parameter information of the single battery 111 in the battery pack 11 , and the single battery 111 in the battery pack 11 has a one-to-one correspondence with the collecting module 12 .
  • the parameter information includes information such as a battery voltage and a temperature.
  • the control module 14 controls the acquisition module 12 to collect the parameter information of the battery pack 11 by the channel 120 being turned on, and the control module 14 can collect the parameters of the battery pack 11 collected by the collection module 12 .
  • the information is sent to the storage module 15, and the storage module 15 can receive and store the parameter information of the battery pack 11.
  • the equalization module 13 is configured to perform equalization processing on the single cells 111 in the battery pack 11, and the single cells 111 in the battery pack 11 are The equalization modules 13 are in one-to-one correspondence.
  • the control module 14 controls the channel 130 between the equalization module 13 and the control module 14 to be turned on, thereby controlling the equalization module 13
  • the unit cell 111 that needs to be turned on is equalized.
  • the storage module 15 is configured to receive and store an equalization command, where the equalization command is a single battery 111 generated according to the parameter information of the battery pack 11 for indicating that the battery pack 11 needs to be turned on, and the single The target of the target balance time of the body battery 11 is commanded.
  • the equalization command may be generated by the control module 14 according to the parameter information of the battery pack 11 collected by the collection module 12; the equalization command may also be generated by the battery management controller 30, and the battery information is collected.
  • the device 10 sends the collected parameter information of the battery pack 11 to the battery management controller 30, and the battery management controller 30 generates an equalization command according to the parameter information of the battery pack 11 collected by the collection module 12, and then The equalization command is fed back to the battery information collector 10.
  • the control module 14 is connected to the collection module 12 and the equalization module 13 respectively, and controls the equalization module 13 to balance the unit cells 111 that need to be balanced according to the equalization command stored in the storage module 15. deal with. As shown in FIG. 2, the single cells 111 in the battery pack 11 are in one-to-one correspondence with the equalization module 13. When the battery unit 11 has a single-cell battery 111 that needs to be turned on, the control module 14 controls the channel 130 between the equalization module 13 and the control module 14 to be turned on, thereby controlling the equalization module 13 The unit cell 111 that needs to be turned on is equalized.
  • the equalization module 13 may be an equalization processing method for discharging the single-cell battery 111 that needs to be turned on, for example, a discharge resistor is connected in parallel to both ends of the unit cell 111 that needs to be turned on.
  • the equalization module 13 may also be an equalization processing method for charging the single-cell battery 111 that needs to be turned on, for example, connecting the single-cell battery 111 that needs to be balanced to the generator or the battery of the vehicle, and further The unit cell 111 that needs to be turned on is charged by the generator or the battery.
  • the control module 14 can pass the following. The method determines the single-cell battery 111 that needs to be turned on:
  • the smallest voltage value among the voltage values of the single cells 111 in the battery pack 11 is used as a reference voltage value.
  • the unit cell 111 having a voltage difference greater than or equal to a preset voltage difference threshold is determined as The need to turn on the balanced unit cell 111.
  • the single-cell battery that needs to be turned on can be determined by other parameter information of the battery pack.
  • the battery equalization system adopts an active equalization method to equalize the single-cell battery, that is, When the unit cells that need to be turned on are charged, the maximum voltage value among the voltage values of the individual cells in the battery pack is used as a reference voltage value.
  • the battery information collector is mainly responsible for collecting battery voltage, temperature and other information, and transmitting the collected data to the battery management controller, and the battery management controller determines that the balance needs to be turned on and completed according to the received data.
  • the equalization execution command indicating the remaining equalization time is sent to the battery information collector in real time, and the battery information collector performs equalization processing according to the instruction of the battery management controller to turn on or off the equalization.
  • the battery information collector cannot receive the balanced execution command due to a failure condition such as a communication failure, the battery equalization effect is affected.
  • the battery information collector of the present application is capable of storing, in the storage module, an equalization command sent by the battery management controller for indicating the unit cell in the battery pack that needs to be turned on, and the target equalization time of the unit battery.
  • the equalization module can perform equalization processing on the single battery that needs to be balanced according to the equalization command stored in the storage module, and solves the problem.
  • the problem that the battery cannot be balanced due to failure conditions such as communication failure improves the reliability of the balance.
  • the control module 14 after receiving the parameter information of the battery pack 11 sent by the collection module 12, the control module 14 sends the parameter information of the battery pack 11 to the battery management controller 30. After receiving the parameter information of the battery pack 11, the battery management controller 30 sends, to the control module 14 according to the parameter information of the battery pack 11, a unit for indicating that the battery pack 11 needs to be balanced. The battery, and the equalization command of the target equalization duration of the single battery.
  • the battery information collector 10 further includes an interface 16 connected to the battery management controller 30, and the interface 16 is configured to transmit parameter information of the battery pack 11 to the battery management. Controller 50.
  • the control module 14 is further configured to receive a control command sent by the battery management controller 50, and start or stop controlling the equalization module 13 to perform the balancing of the single-cell battery 111 that needs to be turned on according to the control command. Balance processing.
  • the control instruction includes at least one of a first equalization instruction and a second equalization instruction, and a failure message instruction of the battery management controller 50;
  • the first equalization command is an equalization command for instructing the battery information collector 50 to perform equalization processing
  • the second equalization command is an equalization command for instructing the battery information collector 50 to stop performing equalization processing
  • the storage module 15 does not receive the first equalization command sent by the battery management controller 30 and does not receive the second balance sent by the battery management controller within a preset time period.
  • the control module 14 determines, according to the parameter information of the battery pack 11 collected by the collection module 12, the single-cell battery 111 that needs to be turned on in the battery pack 11 and the single unit that needs to be balanced.
  • the equalization duration of the battery 111 is stored in the storage module 15 for the equalization command for indicating the equalization duration of the unit cells that need to be turned on, and the equalization period of the balanced unit cells 111 is turned on according to the need.
  • the equalization module 13 is controlled to perform equalization processing on the single-cell battery 111 that needs to be turned on.
  • the preset time period may be a time period in which the battery information collector 10 starts timing after receiving the equalization command sent by the battery management controller 30 last time.
  • the preset time period may be 5s, 10s, 20s, etc., which is not specifically limited in this application.
  • control module 14 is further configured to: when receiving the first equalization instruction sent by the battery management controller 50, send the first equalization instruction as the equalization instruction to the storage module to store And calculating, according to the parameter information of the battery pack 11, a target equalization period of the unit cells 111 that need to be turned on in the battery pack 11 and the unit cells 111 that need to be turned on, and then used to indicate the
  • the equalization instruction of the target equalization duration of the unit cell that needs to be turned on is stored in the storage module 15, and the target equalization duration of the unit cell 111 that is turned on according to the need is controlled to control the equalization module 13 to open the requirement.
  • the balanced unit cells 111 are subjected to equalization processing.
  • control module 14 when the control module 14 receives the fault message of the battery management controller 30, determining, according to the parameter information of the battery pack 11, the single battery and the battery that need to be balanced in the battery pack 11 The target equalization duration of the cell to be balanced is turned on, and the target equalization duration control module 13 that turns on the equalized cell according to the need to perform equalization processing on the cell that needs to be turned on.
  • the minimum voltage value among the voltage values of the individual cells 111 of the battery pack 11 may be used as the reference voltage value, and the preset voltage difference threshold may be 5 mV (or other value).
  • the control module 14 compares A minimum voltage value Vmin in each of the unit cells 111 is obtained, and it is determined whether the difference between the voltage value of each of the unit cells 111 of the battery pack 11 and Vmin is less than 5 mV.
  • the equalization consistency of the battery pack 11 is good, and no equalization is required; if it is greater than 5 mV, the single cell 111 having a difference of more than 5 mV from Vmin is used as the single cell 111 that needs to be turned on. Then, after determining the cell 111 that needs to be turned on, the voltage value and Vmin of the balanced cell 111 can be turned on according to the need, and the target equalization time of the cell 111 that needs to be turned on is calculated. And storing, in the storage module 15, an equalization instruction for indicating the target equalization duration of the single-cell battery 111 that needs to be turned on, and further, the control module 14 turns on the balanced single-cell battery 111 according to the need.
  • the target equalization duration controls the equalization module 13 to discharge the single-cell battery 111 that needs to be turned on. After the start of the discharge, the discharge duration of the unit cell 111 that needs to be turned on is counted, and when the difference between the discharge duration of the unit cell 111 and the target equalization period is within the threshold range, the discharge is stopped, and the equalization ends. .
  • the battery information collector of the present application can determine the need to turn on the equalization according to the parameter information of the collected battery pack according to the parameter information of the collected battery pack when the equalization command sent by the battery management controller is not received within the preset time period.
  • the situation leads to the problem that the battery cannot be balanced, which improves the reliability of the balance.
  • the battery information collector 10 receives the equalization command, and the equalization module 13 further needs to perform the balancing of the unit that needs to be turned on.
  • the control module 14 follows the target in the equalization command.
  • the equalization duration control unit 13 performs equalization processing on the unit cells 111 that need to be turned on.
  • the preset threshold may be 5 ms, 10 ms, 15 ms, etc., and the present application is not specifically limited.
  • the storage module 15 is further configured to store at least one of the following information: the parameter information of the single battery 111 collected by the collection module 12; the highest voltage value or the lowest value of the battery group 11 The voltage value; the number of statistical times of the highest voltage value or the lowest voltage value of the single battery 111 in each section; the battery pack 11 performs the equalization statistics number after the full charge or when the vehicle is in the OFF position.
  • the control module 14 is further configured to evaluate the aging condition of the single battery 111 according to the statistical number when the storage module 15 stores the statistical number of times that the single battery 111 becomes the highest voltage value or the lowest voltage value. .
  • the control module 14 may determine that the single battery 111 is relatively aging, and thus The replacement of the unit cell 111 is prompted.
  • the first preset value may be 15 times, 20 times, 30 times, etc., and the present application is not specifically limited.
  • control module 14 can determine that the single battery is severely aged and needs to be replaced. Furthermore, the control module 14 can transmit the unit battery information that needs to be replaced to the in-vehicle system of the vehicle, and the in-vehicle system can inform the user of the information through the display screen or voice.
  • the control module 14 may determine that the number of statistics is greater than the second preset value.
  • the battery pack 11 is aged more seriously, and the battery pack can be prompted to be replaced.
  • the control module 14 may determine that the battery pack 11 is relatively aging, and may prompt to replace The battery pack, wherein the statistical number of times the battery pack 11 performs equalization is a statistical number of times that the battery pack 11 is equalized after being fully charged or when the vehicle is in an OFF position.
  • the second preset value may be 30 times, 40 times, 50 times, etc., and the present application is not specifically limited.
  • FIG. 3 is another block diagram of a battery information collector according to an exemplary embodiment.
  • the battery information collector 10 includes an acquisition module 12 , an equalization module 13 , a control module 14 , and a storage module 15 .
  • the difference from the battery information collector in FIG. 2 is that, in FIG. 2, the control module 14 of the battery information collector is respectively connected to the acquisition module 12 and the equalization module 13 corresponding to the same unit cell 111 through a channel 140.
  • the acquisition module 12 and the equalization module 13 time-multiplex the channel 140.
  • the control module 14 includes a control chip, and the control chip is respectively connected to the acquisition module 12 and the equalization module 13 corresponding to the same single cell 111 through a pin, and the pin passes through the channel 140 and the equalization respectively.
  • the module 13 is connected to the acquisition module 12.
  • the control module 14 is connected to the corresponding acquisition module 12 through the channel 140 when the control module 14 determines that the equalization process of the unit cells 111 does not need to be equalized; or the control module 14 is further used for
  • the control module 14 is time-divisionally connected to the corresponding acquisition module 12 and the equalization module 13 through the channel 140 when it is determined that the equalization of the unit cells 111 needs to continue to be equalized.
  • the present application corresponds to a channel 140 of the control module 12 shared by the acquisition module 12 and the equalization module 13 of the same unit cell 111, so that the number of channels of the required control module 14 is reduced, thereby reducing the number of channels required for the control module 14.
  • the storage module 15 is further configured to store an equalization duty ratio, and the control module 14 controls the equalization module 13 to meet the need according to the target equalization duration and the equalization duty ratio.
  • the equalization unit cell 111 is turned on for equalization processing, and the equalization duty ratio is a ratio of the duration of the equalization module 13 occupying the channel 140 to the total duration occupied by the channel 140; wherein the channel 140 is The total length of time occupied includes the length of time that the equalization module 13 occupies the channel 140 and the length of time that the acquisition module 12 occupies the channel 140.
  • the control module 14 connects the channel 140 to the acquisition module 12, and further controls the acquisition module 12 to collect parameter information of the battery pack 11. Then, the control module 14 is used to When it is determined that the single battery 111 in the battery pack 11 needs to be turned on and equalized according to the parameter information of the single battery 111 in the battery pack 11, the target equalization time and the balance of the unit cells 111 that need to be turned on are obtained. And the channel 140 is connected to the equalization module 13 corresponding to the cell 111 that needs to be turned on. Then, the control module 14 turns on the target equalization time of the balanced cell 111 according to the need. And the equalization duty ratio control, the equalization module 13 performs equalization processing on the single-cell battery 111 that needs to be turned on.
  • control module 14 determines an equalization period and an acquisition period according to the equalization duration and the equalization duty.
  • the sum of the equalization period and the collection period is equal to the channel 140 being occupied.
  • the total length of time; the channel 140 is connected to the acquisition module 12 in the collection period, so that the collection module 12 collects parameter information of the battery pack 11; during the equalization period, the channel 140
  • the equalization module 13 that needs to perform equalization processing is connected to the equalization module 13 to perform equalization processing on the unit cells 111 of the battery pack 11 that need to be balanced.
  • control module in the present application and the acquisition module and the equalization module of each single cell are time-multiplexed one channel, the number of channels of the control module is reduced, thereby reducing the hardware cost; and because the battery sampling and equalization are separated.
  • the equalization current does not affect the battery voltage, which improves the accuracy of the battery voltage sampling.
  • the present application also provides a vehicle including the battery information collector 10 described above.
  • the specific manner in which each module performs an operation has been described in detail in the embodiment related to the battery information collector 10, and will not be described in detail herein.
  • FIG. 4 is a block diagram of a battery equalization system, according to an exemplary embodiment.
  • the battery equalization system 40 is applied to a battery pack 11 composed of a plurality of single cells, and the battery equalization system 40 includes: the battery information collector 10 described above and a battery management controller 30, the battery
  • the information collector 10 includes an equalization module 13, a control module 14, and an acquisition module 12.
  • the collecting module 12 is configured to collect parameter information of the battery pack 11 and send the collected parameter information of the battery pack 11 to the battery management controller 30 and the control module 14.
  • the battery management controller 30 is configured to receive parameter information of the battery pack 11 sent by the collection module 12, and send an indication to the battery information collector 10 when determining that a balanced single battery needs to be turned on. In the battery pack 11, it is necessary to turn on the equalization command of the balanced single cells.
  • the storage module 15 is configured to store the equalization instruction.
  • the control module 14 is connected to the collection module 12 and the equalization module 13 respectively, and controls the equalization module 13 to perform equalization processing on the single cells that need to be balanced according to the equalization command stored in the storage module 15 . .
  • the battery management controller 30 is configured to calculate, according to the parameter information of the battery pack 11 collected by the collection module 12, a cell balancing required when determining that a balanced single cell needs to be turned on.
  • the target equalization time is stored, and the target equalization time is stored in the storage module 15, and the equalization module 13 is controlled to perform equalization processing on the single-cell that needs to be balanced according to the target equalization duration.
  • control module 14 is connected to the storage module 13, and the control module 14 is configured to determine, according to the parameter information of the battery pack 11 collected by the collection module 12, that the balancing unit needs to be turned on.
  • the target equalization time required for the cell balancing is calculated, and the target equalization time is stored in the storage module 15, and the equalization module 13 is controlled to turn on the equalization according to the target equalization time.
  • the single cells are equalized.
  • the equalization instruction is sent to the storage module 15 through the control module 14 or the battery management controller 30 to control the equalization module 13 to balance the single-cells that need to be balanced.
  • the control module 14 or the battery management controller 30 determines, according to the parameter information of the battery pack 11 collected by the collection module 12, that the unit cells that need to be balanced are turned on.
  • control module 14 when the control module 14 is configured to receive the equalization command sent by the battery management controller 30 in the preset time period, the control module 14 collects the data according to the collection module 12
  • the parameter information of the battery pack 11 determines the target equalization duration of the single-cell battery in the battery pack 11 that needs to be turned on and the unit that needs to be turned on, and will be used to indicate that the balance needs to be turned on.
  • the equalization command of the target equalization time of the single battery is stored in the storage module 15, and the target equalization time of the balanced single cell is turned on according to the need to control the equalization module 13 to open the balanced single cell. Perform equalization processing.
  • control module 14 is further configured to: after the equalization module 13 receives the equalization instruction after the preset time period, and the equalization module 13 further needs to When the difference between the remaining processing duration of the equalization processing of the battery and the target equalization duration of the single battery indicated in the equalization command is not within the preset threshold, according to the equalization module 13
  • the remaining processing duration of the equalization processing of the single cells controls the equalization module 13 to perform equalization processing on the single cells that need to be turned on.
  • the control module 14 may be configured to receive the battery pack 11 Parameter information, and calculating, according to the parameter information of the battery pack 11, a target equalization period of the unit cell 111 that needs to be turned on in the battery pack 11 and the unit cell 111 that needs to be turned on, and then used for An equalization instruction indicating a target equalization duration of the unit cells that need to be turned on is stored in the storage module 15, and controlling the equalization module 13 to control the target equalization duration of the balanced unit cells 111 according to the need
  • the unit cell 111 that needs to be turned on equalization is subjected to equalization processing.
  • the control module 14 is configured to receive parameter information of the battery pack 11 and according to the battery pack.
  • the parameter information of 11 determines a target equalization duration for calculating the cell to be turned on in the battery pack 11 and the cell that needs to be turned on, and controls the target equalization time of the balanced cell according to the need
  • the equalization module 13 performs equalization processing on the cells that need to be turned on.
  • the storage module 15 is further configured to store at least one of the following information: the parameter information of the single battery 111 collected by the collection module 12; the highest voltage value or the lowest value of the battery group 11 The voltage value; the number of statistical times of the highest voltage value or the lowest voltage value of the single battery 111 in each section; the battery pack 11 performs the equalization statistics number after the full charge or when the vehicle is in the OFF position.
  • the control module 14 is further configured to evaluate the aging condition of the single battery 111 according to the statistical number when the storage module 15 stores the statistical number of times that the single battery 111 becomes the highest voltage value or the lowest voltage value. .
  • the control module 14 may determine that the single battery 111 is relatively aging, and thus The replacement of the unit cell 111 is prompted.
  • the first preset value may be 15 times, 20 times, 30 times, etc., and the present application is not specifically limited.
  • control module 14 can determine that the single battery is severely aged and needs to be replaced. Furthermore, the control module 14 can transmit the unit battery information that needs to be replaced to the in-vehicle system of the vehicle, and the in-vehicle system can inform the user of the information through the display screen or voice.
  • the control module 14 may It is determined that the battery pack 11 is aged more seriously, and thus the battery pack can be prompted to be replaced. Specifically, when the number of times that the storage module 15 stores the battery pack 11 for equalization is greater than a third preset value, the control module 14 may determine that the battery pack 11 is relatively aging, and may prompt to replace In the battery pack, the statistical number of times that the battery pack 11 performs equalization is a statistical number of times that the battery pack 11 is equalized after being fully charged or when the vehicle key switch is in the OFF position.
  • the second preset value may be 30 times, 40 times, 50 times, etc., and the present application is not specifically limited.
  • the battery information collector when the battery information collector does not receive the equalization command sent by the battery management controller within a preset time period, the battery information collector can rely on the parameter information of the collected battery pack to rely on itself.
  • the control module calculates a cell to be balanced and a target equalization time, and then controls the equalization module to perform equalization processing on the cell that needs to be balanced according to the target equalization duration of the cell to be balanced.
  • the problem of the equalization command sent by the battery management controller cannot be received due to the failure condition such as the communication failure, thereby causing the problem that the battery balance cannot be performed, and the reliability of the battery equalization system is improved.
  • the present application also provides a vehicle 100, as shown in FIG. 6, that includes the battery equalization system 40 described above.
  • vehicle 100 as shown in FIG. 6, that includes the battery equalization system 40 described above.
  • the specific manner in which the operations are performed by the respective modules has been described in detail in the embodiments related to the battery information collector 10 and the battery equalization system 40, and will not be described in detail herein.
  • FIG. 5 is a flow chart showing a battery equalization method according to an exemplary embodiment.
  • the battery equalization method is used in a battery equalization system, and the battery equalization system includes a battery information collector and a battery management controller, and the battery information collector includes an acquisition module, a storage module, an equalization module, and a control. Module; the method includes the following steps.
  • Step S51 the collecting module collects parameter information of the battery pack, and sends the collected parameter information of the battery pack to the battery management controller.
  • Step S52 the battery management controller receives the parameter information of the battery pack sent by the collection module, and sends a signal indicating the battery to the battery information collector when determining that the balanced single battery needs to be turned on. In the group, it is necessary to turn on the equalization command of the balanced single battery.
  • Step S53 the storage module stores the equalization instruction.
  • Step S54 The equalization module performs equalization processing on the single cells that need to be turned on according to the equalization instruction stored by the storage module.
  • Step S55 the control module or the battery management controller sends an equalization instruction to the storage module, so that the control module controls the equalization module to perform equalization processing on the single-cell that needs to be balanced.
  • control module is connected to the collection module, the equalization module, and the storage module, and the control module does not receive the battery management controller sent by the storage module within a preset time period.
  • the equalization instruction is used to control the equalization
  • the equalization instruction is generated according to the parameter information of the battery pack collected by the collection module, and the equalization instruction is sent to the storage module for storage, and the equalization module is controlled.
  • the single cell that needs to be turned on equalization is subjected to equalization processing.
  • control module of the battery information collector receives an equalization instruction for instructing the battery information collector to perform equalization processing
  • the control module receives parameter information of the battery group, and according to the battery
  • the parameter information of the group generates an equalization instruction and sends the equalization instruction to the storage module for storage, and controls the equalization module to perform equalization processing on the single battery that needs to be turned on.
  • control module of the battery information collector receives the fault message of the battery management controller
  • the control module receives the parameter information of the battery pack, and generates an equalization command according to the parameter information of the battery pack.
  • the equalization instruction is sent to the storage module for storage, and the equalization module is controlled to perform equalization processing on the single battery that needs to be turned on.
  • the present application also provides a computer readable storage medium having stored thereon computer program instructions that, when executed by a processor, implement the battery equalization method described above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Secondary Cells (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

一种电池信息采集器、电池均衡系统、车辆、方法及存储介质。电池信息采集器（10）包括采集模块（12）、均衡模块（13）、控制模块（14）和存储模块（15）；采集模块（12）用于采集电池组（11）的参数信息；存储模块（15）用于接收并存储均衡指令，均衡指令为根据电池组（11）的参数信息生成的；控制模块（14）连接于采集模块（12）和均衡模块（13），并根据存储模块（15）存储的均衡指令控制均衡模块（13）对需要开启均衡的单体电池（111）进行均衡处理。

Description

电池信息采集器、电池均衡系统、车辆、方法及存储介质
相关申请的交叉引用
本申请基于申请号为201710776099.8，申请日为2017年8月31日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本申请涉及电池组均衡领域，具体地，涉及一种电池信息采集器、电池均衡系统、车辆、方法及存储介质。
背景技术
在电动汽车中，电池组是其重要的组成部分。由于电池组是由多个单体电池串联连接而成，随着电池的使用，电池组中各单体间的差异性逐渐扩大，导致电池单体间一致性差。由于电池的短板效应，使电池组容量不能充分发挥，导致电池组的整体容量减少。因此，对电动汽车的电池组进行有效的均衡管理，有利于提高电池组中各单体电池的一致性，减少电池的容量损失，延长电池的使用寿命及电动汽车续驶里程，具有十分重要的意义。
相关技术的均衡系统中，电池管理控制器在确定需要开启均衡并完成均衡累计时间计算后，需实时发送指示剩余均衡时间的均衡执行命令给电池信息采集器。在电池管理控制器多次发送指示剩余均衡时间的均衡执行命令过程中，容易因通信故障等失效情况导致电池无法均衡，从而影响电池均衡效果。
发明内容
本申请的目的是提供一种电池信息采集器、电池均衡系统、车辆、方法及存储介质，用于解决相关技术的电池均衡系统中因通信故障等失效情况导致电 池无法均衡的技术问题。
为了实现上述目的，本申请提供一种电池信息采集器，包括采集模块、均衡模块、控制模块和存储模块；
所述采集模块用于采集电池组的参数信息；
所述存储模块用于接收并存储均衡指令，所述均衡指令为根据所述电池组的参数信息生成的；
所述控制模块连接于所述采集模块和所述均衡模块，并根据所述存储模块存储的所述均衡指令控制所述均衡模块对需要开启均衡的单体电池进行均衡处理。
可选地，所述控制模块根据所述采集模块采集的电池组的参数信息生成所述均衡指令。
可选地，所述均衡指令为电池管理控制器根据所述采集模块采集的电池组的参数信息生成。
可选地，所述电池信息采集器还包括与电池管理控制器连接的接口，所述接口用于传输所述电池组的参数信息至所述电池管理控制器；
所述控制模块还用于：接收所述电池管理控制器发送的控制指令，并根据所述控制指令开启或停止控制所述均衡模块对所述需要开启均衡的单体电池进行均衡处理；
其中，所述控制指令包括第一均衡指令和第二均衡指令的至少其中一个，以及所述电池管理控制器的故障报文指令；
其中，第一均衡指令为用于指示所述电池信息采集器进行均衡处理的均衡指令，第二均衡指令为用于指示所述电池信息采集器停止进行均衡处理的均衡指令。
可选地，所述控制模块，还用于：在预设时间段内所述存储模块未收到电池管理控制器发送的第一均衡指令且未收到所述电池管理控制器发送的第二均衡指令时，根据所述采集模块采集到的所述电池组的参数信息，生成均衡指令 并将所述均衡指令发送到所述存储模块以存储，并控制所述均衡模块对所述需要开启均衡的单体电池进行均衡处理。
可选地，所述电池信息采集器的控制模块收到所述电池管理器发送的第一均衡指令时，将所述第一均衡指令作为所述均衡指令发送到所述存储模块以存储，以及根据控制所述均衡模块对需要开启均衡的单体电池进行均衡处理。
可选地，所述控制模块还用于：在收到电池管理控制器的故障报文时，根据所述电池组的参数信息生成所述均衡指令并将所述均衡指令发送到所述存储模块以存储，控制所述均衡模块对需要开启均衡的单体电池进行均衡处理。
可选地，所述均衡指令包括对需要开启均衡的单体电池进行均衡所需的目标均衡时长。
可选地，所述控制模块通过两个通道分别与对应于同一单体电池的采集模块和均衡模块连接。
可选地，所述控制模块包括控制芯片，所述控制芯片通过两个引脚分别与对应于同一单体电池的采集模块和均衡模块连接，所述两个引脚与所述两个通道一一对应，所述两个引脚中的一个引脚通过所述两个通道中的一个通道与所述均衡模块连接，所述两个引脚中的另一引脚通过所述两个通道中的另一通道与所述采集模块连接。
可选地，所述控制模块通过一个通道与对应于同一单体电池的采集模块和均衡模块连接，所述采集模块和所述均衡模块分时复用所述通道；
所述控制模块用于在确定单体电池不需要进行均衡时，控制所述控制模块通过所述通道与对应的采集模块连接；或者，
所述控制模块还用于在确定单体电池需要进行均衡时，通过所述通道分时连接于对应的采集模块和均衡模块
可选地，所述控制模块包括控制芯片，所述控制芯片通过一个引脚与对应于同一单体电池的采集模块和均衡模块连接，所述引脚通过所述通道与所述均衡模块和所述采集模块连接。
可选地，所述存储模块还用于存储均衡占空比，所述均衡占空比为所述均衡模块占用所述通道的时长与所述通道被占用的总时长之比；以及，
所述控制模块还用于按照所述需要开启均衡的单体电池的目标均衡时长和所述均衡占空比控制所述均衡模块对所述需要开启均衡的单体电池进行均衡处理。
本申请还提供了一种电池均衡系统，包括电池管理控制器和上述的电池信息采集器，电池管理控制器和电池信息采集器连接。
可选地，所述电池管理控制器用于根据所述采集模块采集到的所述电池组的参数信息，在确定需要开启均衡的单体电池时，计算单体电池均衡所需的目标均衡时长，并将所述目标均衡时长存储到所述存储模块中，根据所述目标均衡时长控制所述均衡模块对所述需要开启均衡的单体电池进行均衡处理。
可选地，所述电池信息采集器的控制模块收到电池管理控制器的故障报文时，所述电池信息采集器的控制模块用于接收所述电池组的参数信息，并根据所述电池组的参数信息生成均衡指令并将所述均衡指令发送到所述存储模块以存储，控制所述均衡模块对需要开启均衡的单体电池进行均衡处理。
可选地，所述电池信息采集器的存储模块还用于存储以下信息中的至少一者：
所述采集电路采集到的所述单体电池的参数信息；
所述电池组的最高电压值或最低电压值；
每节所述单体电池成为最高电压值或最低电压值的统计次数；
所述电池组分别在充满电之后或车辆处于OFF档时进行均衡的统计次数。
可选地，所述电池信息采集器的控制模块还用于在所述电池组中有单体电池成为最高电压值或最低电压值的统计次数超过第一预设值时，提示该单体电池需要更换。
可选地，所述电池信息采集器的控制模块还用于在所述电池组在充满电之后或车辆处于OFF档时进行均衡的统计次数大于第二预设值时，提示更换所述 电池组。
本申请还提供了一种车辆，包括上述的电池均衡系统。
本申请的实施例提供的技术方案可以包括以下有益效果：
本申请中的电池信息采集器能够将用于指示所述电池组中需要开启均衡的单体电池的均衡指令存储于存储模块中，当电池信息采集器不能收到电池管理控制器发送的均衡指令时，所述均衡模块能够根据存储模块中存储的均衡指令，对所述需要开启均衡的单体电池进行均衡处理，解决了因通信故障等失效情况导致电池无法均衡的问题，提高了均衡的可靠性。
本申请的其他特征和优点将在随后的具体实施方式部分予以详细说明。
附图说明
附图是用来提供对本申请的进一步理解，并且构成说明书的一部分，与下面的具体实施方式一起用于解释本申请，但并不构成对本申请的限制。在附图中：
图1是根据一示例性实施例示出的一种电池信息采集器的框图；
图2是根据一示例性实施例示出的一种电池信息采集器的另一框图；
图3是根据一示例性实施例示出的一种电池信息采集器的另一框图；
图4是根据一示例性实施例示出的一种电池均衡系统的框图；
图5是根据一示例性实施例示出的一种电池均衡方法的流程图；以及
图6是根据一示例性实施例示出的一种车辆的方框示意图。
具体实施方式
以下结合附图对本申请的具体实施方式进行详细说明。应当理解的是，此处所描述的具体实施方式仅用于说明和解释本申请，并不用于限制本申请。
图1是根据一示例性实施例示出的一种电池信息采集器的框图，图2是根据一示例性实施例示出的一种电池信息采集器的另一框图。如图1和图2所示， 所述电池信息采集器10包括用于采集电池组11的参数信息的采集模块12、控制模块14、存储模块15以及均衡模块13，其中，所述电池组11是由多个单体电池串联连接而成。
在图2中，所述控制模块14通过两个通道120、130分别与对应于同一单体电池111的采集模块12和均衡模块13连接。两个通道120、130与对应于同一单体电池111的采集模块12和均衡模块13一一对应连接。所述控制模块14包括控制芯片，所述控制芯片通过两个引脚分别与对应于同一单体电池111的采集模块12和均衡模块13连接，所述两个引脚与所述两个通道120、130一一对应，所述两个引脚中的一个引脚通过所述通道130与所述均衡模块13连接，所述两个引脚中的另一引脚通过所述通道120与所述采集模块12连接。
如图1和图2所示，所述采集模块12用于采集电池组11中单体电池111的参数信息，所述电池组11中的单体电池111与采集模块12一一对应。其中，所述参数信息包括电池电压、温度等信息。所述控制模块14通过将通道120导通，进而控制所述述采集模块12采集电池组11的参数信息，所述控制模块14可以将所述采集模块12采集到的所述电池组11的参数信息发送给所述存储模块15，所述存储模块15可以接收并存储所述电池组11的参数信息。
如图1和图2所示，如图1所示，所述均衡模块13用于对所述电池组11中的单体电池111进行均衡处理，所述电池组11中的单体电池111与所述均衡模块13一一对应。当所述电池组11中有需要开启均衡的单体电池111时，所述控制模块14控制所述均衡模块13与所述控制模块14之间的通道130导通，进而控制所述均衡模块13对所述需要开启均衡的单体电池111进行均衡处理。
所述存储模块15用于接收并存储均衡指令，所述均衡指令为根据所述电池组11的参数信息生成的用于指示所述电池组11中需要开启均衡的单体电池111、以及该单体电池11的目标均衡时长的指令。其中，所述均衡指令可以是所述控制模块14根据所述采集模块12采集的电池组11的参数信息生成的；所述均衡指令也可以是电池管理控制器30生成的，所述电池信息采集器10将采 集到的电池组11的参数信息发送给所述电池管理控制器30，所述电池管理控制器30根据所述采集模块12采集的电池组11的参数信息生成均衡指令后，将所述均衡指令反馈给所述电池信息采集器10。
所述控制模块14分别连接于所述采集模块12和所述均衡模块13，并根据所述存储模块15存储的均衡指令控制所述均衡模块13对所述需要开启均衡的单体电池111进行均衡处理。如图2所示，所述电池组11中的单体电池111与所述均衡模块13一一对应。当所述电池组11中有需要开启均衡的单体电池111时，所述控制模块14控制所述均衡模块13与所述控制模块14之间的通道130导通，进而控制所述均衡模块13对所述需要开启均衡的单体电池111进行均衡处理。其中，所述均衡模块13可以是采用对所述需要开启均衡的单体电池111进行放电的均衡处理方式，比如，在所述需要开启均衡的单体电池111的两端并联一个放电电阻。所述均衡模块13也可以是采用对所述需要开启均衡的单体电池111进行充电的均衡处理方式，比如，将所述需要开启均衡的单体电池111连接于车辆的发电机或蓄电池，进而通过所述发电机或所述蓄电池对所述需要开启均衡的单体电池111进行充电。
如图2所示，当所述电池信息采集器10采用被动均衡方式对单体电池进行均衡处理，即对所述需要开启均衡的单体电池111进行放电时，所述控制模块14可以通过以下方式确定所述需要开启均衡的单体电池111：
首先，根据所述采集模块12采集到的所述电池组11中各单体电池111的电压值，将所述电池组11中各单体电池111的电压值中最小的电压值作为参考电压值；
然后，根据所述电池组11中各单体电池111的电压值与所述参考电压值之间的电压差值，将电压差值大于或等于与预设电压差阈值的单体电池111确定为所述需要开启均衡的单体电池111。
当然，在其它的实施例中，也可以通过电池组的其它参数信息确定所述需要开启均衡的单体电池，比如，当所述电池均衡系统采用主动均衡方式对单体 电池进行均衡处理，即对所述需要开启均衡的单体电池进行充电时，将所述电池组中各单体电池的电压值中最大的电压值作为参考电压值。
在相关均衡技术实际应用中，电池信息采集器主要负责采集电池电压、温度等信息，并将所采集的数据传送给电池管理控制器，电池管理控制器在根据接收的数据确定需要开启均衡并完成均衡累计时间计算后，实时发送指示剩余均衡时间的均衡执行命令给电池信息采集器，电池信息采集器根据电池管理控制器的指令进行均衡处理，开启或关断均衡。当因通信故障等失效情况导致电池信息采集器不能收到均衡执行命令时，会影响电池均衡效果。
然而，本申请中的电池信息采集器能够将电池管理控制器发送的用于指示所述电池组中需要开启均衡的单体电池、以及该单体电池的目标均衡时长的均衡指令存储于存储模块中，当电池信息采集器不能收到电池管理控制器发送的均衡指令时，所述均衡模块能够根据存储模块中存储的均衡指令，对所述需要开启均衡的单体电池进行均衡处理，解决了因通信故障等失效情况导致电池无法均衡的问题，提高了均衡的可靠性。
如图2所示，所述控制模块14在接收到所述采集模块12发送的所述电池组11的参数信息后，向电池管理控制器30发送所述电池组11的参数信息。所述电池管理控制器30在接收所述电池组11的参数信息后，根据所述电池组11的参数信息向所述控制模块14发送用于指示所述电池组11中需要开启均衡的单体电池、以及该单体电池的目标均衡时长的均衡指令。
可选地，参见图4所示，所述电池信息采集器10还包括与电池管理控制器30连接的接口16，所述接口16用于传输所述电池组11的参数信息至所述电池管理控制器50。
其中，所述控制模块14还用于接收所述电池管理控制器50发送的控制指令，并根据所述控制指令开启或停止控制所述均衡模块13对所述需要开启均衡的单体电池111进行均衡处理。
其中，所述控制指令包括第一均衡指令和第二均衡指令的至少其中一个， 以及所述电池管理控制器50的故障报文指令；
其中，第一均衡指令为用于指示所述电池信息采集器50进行均衡处理的均衡指令，第二均衡指令为用于指示所述电池信息采集器50停止进行均衡处理的均衡指令。
比如，在所述电池信息采集器10于预设时间段内所述存储模块15未接收到电池管理控制器30发送的第一均衡指令且未收到所述电池管理控制器发送的第二均衡指令时，所述控制模块14根据所述采集模块12采集到的所述电池组11的参数信息，确定所述电池组11中需要开启均衡的单体电池111和所述需要开启均衡的单体电池111的均衡时长，并将用于指示所述需要开启均衡的单体电池的均衡时长的均衡指令存储到所述存储模块15中，以及按照所述需要开启均衡的单体电池111的均衡时长控制所述均衡模块13对所述需要开启均衡的单体电池111进行均衡处理。可选地，所述预设时间段可以是所述电池信息采集器10自上一次接收到电池管理控制器30发送的所述均衡指令后开始计时的时间段。其中，所述预设时间段可以是5s、10s、20s等等，对此，本申请不作具体限定。
可选地，所述控制模块14还用于在收到所述电池管理控制器50发送的第一均衡指令时，将所述第一均衡指令作为所述均衡指令发送到所述存储模块以存储，以及根据所述电池组11的参数信息计算所述电池组11中需要开启均衡的单体电池111和所述需要开启均衡的单体电池111的目标均衡时长，然后，将用于指示所述需要开启均衡的单体电池的目标均衡时长的均衡指令存储到所述存储模块15中，以及按照所述需要开启均衡的单体电池111的目标均衡时长控制所述均衡模块13对所述需要开启均衡的单体电池111进行均衡处理。
可选地，当所述控制模块14收到所述电池管理控制器30的故障报文时，根据所述电池组11的参数信息确定所述电池组11中需要开启均衡的单体电池和所述需要开启均衡的单体电池的目标均衡时长，并按照所述需要开启均衡的单体电池的目标均衡时长控制均衡模块13对需要开启均衡的单体电池进行均 衡处理。
举例来讲，可以将所述电池组11的各单体电池111的电压值中最小的电压值作为所述参考电压值，所述预设电压差阈值可以为5mV(或者其它数值)。所述电池信息采集器10向电池管理控制器30发送所述电池组11的参数信息后，于10s内没接收到所述电池管理控制器30反馈的均衡指令时，所述控制模块14经比较得到各单体电池111中最小电压值Vmin，并判定所述电池组11的各单体电池111的电压值与Vmin的差值是否小于5mV。如果是，则所述电池组11的均衡一致性很好，不需要均衡；如果大于5mV，则将与Vmin差值大于5mV的单体电池111作为需要开启均衡的单体电池111。然后，在确定所述需要开启均衡的单体电池111后，可以根据所述需要开启均衡的单体电池111的电压值和Vmin，计算所述需要开启均衡的单体电池111的目标均衡时长，并将用于指示所述需要开启均衡的单体电池111的目标均衡时长的均衡指令存储到所述存储模块15中，进而，所述控制模块14按照所述需要开启均衡的单体电池111的目标均衡时长控制所述均衡模块13对所述需要开启均衡的单体电池111进行放电。在放电开始后，统计对所述需要开启均衡的单体电池111的放电时长，当该单体电池111的放电时长与所述目标均衡时长的差值在阈值范围内时，停止放电，均衡结束。
本申请中的电池信息采集器能够在预设时间段内未接收到电池管理控制器发送的均衡指令时，能够根据采集到的电池组的参数信息，依靠自身所包括的控制模块确定需要开启均衡的单体电池以及目标均衡时长，然后按照所述需要开启均衡的单体电池的目标均衡时长控制所述均衡模块对所述需要开启均衡的单体电池进行均衡处理，解决了因通信故障等失效情况导致电池无法均衡的问题，提高了均衡的可靠性。
可选地，如图2所示，在所述电池信息采集器10于所述预设时间段之后接收到所述均衡指令，且所述均衡模块13还需对所述需要开启均衡的单体电池111进行均衡处理的剩余处理时长与所述均衡指令中所指示的该单体电池111 的目标均衡时长的差值在预设阈值内时，所述控制模块14按照所述均衡指令中的目标均衡时长控制所述均衡模块13对所述需要开启均衡的单体电池111进行均衡处理。其中，所述预设阈值可以是5ms、10ms、15ms等等，对此，本申请不作具体限定。
可选地，所述存储模块15还用于存储以下信息中的至少一者：所述采集模块12采集到的所述单体电池111的参数信息；所述电池组11的最高电压值或最低电压值；每节所述单体电池111成为最高电压值或最低电压值的统计次数；所述电池组11分别在充满电之后或车辆处于OFF档时进行均衡的统计次数。
其中，当所述存储模块15存储有每节所述单体电池111成为最高电压值或最低电压值的统计次数时，所述控制模块14还用于根据统计次数评估单体电池111的老化情况。在所述电池组11中有单体电池111成为最高电压值或最低电压值的统计次数超过第一预设值时，则所述控制模块14可以确定该单体电池111老化比较严重，进而可以提示更换该单体电池111。所述第一预设值可以是15次、20次、30次等等，对此，本申请不做具体限定。
举例来讲，当所述存储模块15存储的某一单体电池成为最高电压值的次数超过20次，则所述控制模块14则可以认定该单体电池老化严重，需要更换。进而，所述控制模块14可以将需要更换的单体电池信息发送给车辆的车载系统，车载系统可以将该信息通过显示屏或语音告知用户。
可选地，当所述存储模块15存储有所述电池组11分别在充满电之后或车辆处于OFF档时进行均衡的统计次数大于第二预设值时，则所述控制模块14可以确定所述电池组11老化比较严重，进而可以提示更换所述电池组。具体的，当所述存储模块15存储有所述电池组11进行均衡的统计次数大于第三预设值时，则所述控制模块14可以确定所述电池组11老化比较严重，进而可以提示更换所述电池组，其中，所述电池组11进行均衡的统计次数为所述电池组11分别在充满电之后或车辆处于OFF档时进行均衡的统计次数。所述第二预设值 可以是30次、40次、50次等等，对此，本申请不做具体限定。
图3是根据一示例性实施例示出的一种电池信息采集器的另一框图。如图3所示，所述电池信息采集器10包括采集模块12、均衡模块13、控制模块14以及存储模块15。与图2中的电池信息采集器的区别在于，在图2中，电池信息采集器的所述控制模块14通过一个通道140分别与对应于同一单体电池111的采集模块12和均衡模块13连接，该采集模块12和该均衡模块13分时复用所述通道140。
所述控制模块14包括控制芯片，所述控制芯片通过一个引脚分别与对应于同一单体电池111的采集模块12和均衡模块13连接，所述引脚通过所述通道140分别与所述均衡模块13和所述采集模块12连接。所述控制模块14在确定与经过均衡处理的单体电池111不需要进行均衡时，所述控制模块14通过所述通道140与对应的采集模块12连接；或者，所述控制模块14还用于在确定经过均衡处理的单体电池111需要继续进行均衡时，所述控制模块14通过所述通道140分时连接于对应的采集模块12和均衡模块13。
本申请对应于同一单体电池111的采集模块12和均衡模块13共用控制模块14的一个通道140，使得所需控制模块14的通道数减少，进而减少了对控制模块14的通道数量要求。
可选地，如图3所示，所述存储模块15还用于存储均衡占空比，所述控制模块14根据所述目标均衡时长和均衡占空比控制所述均衡模块13对所述需要开启均衡的单体电池111进行均衡处理，所述均衡占空比为所述均衡模块13占用所述通道140的时长与所述通道140被占用的总时长之比；其中，所述通道140被占用的总时长包括所述均衡模块13占用所述通道140的时长以及所述采集模块12占用所述通道140的时长。
如图3所示，首先，所述控制模块14将通道140连通于所述采集模块12，进而可以控制所述述采集模块12采集电池组11的参数信息；接着，所述控制模块14用于在根据所述电池组11中单体电池111的参数信息确定所述电池组 11中有单体电池111需要开启均衡时，获取所述需要开启均衡的单体电池111的目标均衡时长和均衡占空比，并将所述通道140连通于所述需要开启均衡的单体电池111所对应的均衡模块13；然后，所述控制模块14按照所述需要开启均衡的单体电池111的目标均衡时长和均衡占空比控制该均衡模块13对所述需要开启均衡的单体电池111进行均衡处理。
可选地，所述控制模块14根据所述均衡时长和所述均衡占空比确定均衡时间段和采集时间段，所述均衡时间段和所述采集时间段之和等于所述通道140被占用的总时长；在所述采集时间段，所述通道140连通所述采集模块12，以使所述采集模块12采集所述电池组11的参数信息；在所述均衡时间段，所述通道140连通需要进行均衡处理的均衡模块13，以使所述均衡模块13对所述电池组11中需要开启均衡的单体电池111进行均衡处理。
由于本申请中的控制模块与每一节单体电池的采集模块和均衡模块分时复用一个通道，减少了对控制模块的通道数量要求，进而降低了硬件成本；并且由于电池采样和均衡分开进行，均衡电流不会影响电池电压，从而提高了电池电压采样的精度。
本申请还提供了一种车辆，包括上述的电池信息采集器10。其中，各个模块执行操作的具体方式已经在有关该电池信息采集器10的实施例中进行了详细描述，此处将不做详细阐述说明。
图4是根据一示例性实施例示出的一种电池均衡系统的框图。如图4所示，所述电池均衡系统40应用于多个单体电池组成的电池组11，所述电池均衡系统40包括：上述的电池信息采集器10以及电池管理控制器30，所述电池信息采集器10包括均衡模块13、控制模块14和采集模块12。
所述采集模块12用于采集电池组11的参数信息，并向所述电池管理控制器30和所述控制模块14发送采集的所述电池组11的参数信息。
所述电池管理控制器30用于接收所述采集模块12发送的所述电池组11的参数信息，并在确定需要开启均衡的单体电池时，向所述电池信息采集器10 发送用于指示所述电池组11中需要开启均衡的单体电池的均衡指令。
所述存储模块15用于存储所述均衡指令。
所述控制模块14分别连接于所述采集模块12和所述均衡模块13，并根据所述存储模块15存储的均衡指令控制所述均衡模块13对所述需要开启均衡的单体电池进行均衡处理。
可选地，所述电池管理控制器30用于根据所述采集模块12采集到的所述电池组11的参数信息，在确定需要开启均衡的单体电池时，计算单体电池均衡所需的目标均衡时长，并将所述目标均衡时长存储到所述存储模块15中，根据所述目标均衡时长控制所述均衡模块13对所述需要开启均衡的单体电池进行均衡处理。
可选地，所述控制模块14连接于所述存储模块13，所述控制模块14用于根据所述采集模块12采集到的所述电池组11的参数信息，在确定需要开启均衡的单体电池时，计算单体电池均衡所需的目标均衡时长，并将所述目标均衡时长存储到所述存储模块15中，根据所述目标均衡时长控制所述均衡模块13对所述需要开启均衡的单体电池进行均衡处理。
可选地，选择性地通过所述控制模块14或所述电池管理控制器30向所述存储模块15发送均衡指令，以控制所述均衡模块13对所述需要开启均衡的单体电池进行均衡处理，其中，所述控制模块14或所述电池管理控制器30根据所述采集模块12采集的所述电池组11的参数信息确定需要开启均衡的单体电池。
比如，在所述控制模块14用于在预设时间段内所述存储模块15未接收到电池管理控制器30发送的所述均衡指令时，所述控制模块14根据所述采集模块12采集到的所述电池组11的参数信息，确定所述电池组11中需要开启均衡的单体电池和所述需要开启均衡的单体电池的目标均衡时长，并将用于指示所述需要开启均衡的单体电池的目标均衡时长的均衡指令存储到所述存储模块15中，以及按照所述需要开启均衡的单体电池的目标均衡时长控制所述均衡模 块13对所述需要开启均衡的单体电池进行均衡处理。
可选地，所述控制模块14还用于在所述均衡模块13于所述预设时间段之后接收到所述均衡指令，且所述均衡模块13还需对所述需要开启均衡的单体电池进行均衡处理的剩余处理时长与所述均衡指令中所指示的该单体电池的目标均衡时长的差值不在预设阈值内时，按照所述均衡模块13还需对所述需要开启均衡的单体电池进行均衡处理的剩余处理时长控制所述均衡模块13对所述需要开启均衡的单体电池进行均衡处理。
当所述电池信息采集器10于所述预设时间段内收到用于指示所述电池信息采集器10进行均衡处理的均衡指令时，所述控制模块14可以用于接收所述电池组11的参数信息，并根据所述电池组11的参数信息计算所述电池组11中需要开启均衡的单体电池111和所述需要开启均衡的单体电池111的目标均衡时长，然后，将用于指示所述需要开启均衡的单体电池的目标均衡时长的均衡指令存储到所述存储模块15中，以及按照所述需要开启均衡的单体电池111的目标均衡时长控制所述均衡模块13对所述需要开启均衡的单体电池111进行均衡处理。
可选地，当所述电池信息采集器10收到所述电池管理控制器30的故障报文时，所述控制模块14用于接收所述电池组11的参数信息，并根据所述电池组11的参数信息确定计算所述电池组11中需要开启均衡的单体电池和所述需要开启均衡的单体电池的目标均衡时长，并按照所述需要开启均衡的单体电池的目标均衡时长控制均衡模块13对需要开启均衡的单体电池进行均衡处理。
可选地，所述存储模块15还用于存储以下信息中的至少一者：所述采集模块12采集到的所述单体电池111的参数信息；所述电池组11的最高电压值或最低电压值；每节所述单体电池111成为最高电压值或最低电压值的统计次数；所述电池组11分别在充满电之后或车辆处于OFF档时进行均衡的统计次数。
其中，当所述存储模块15存储有每节所述单体电池111成为最高电压值或 最低电压值的统计次数时，所述控制模块14还用于根据统计次数评估单体电池111的老化情况。在所述电池组11中有单体电池111成为最高电压值或最低电压值的统计次数超过第一预设值时，则所述控制模块14可以确定该单体电池111老化比较严重，进而可以提示更换该单体电池111。所述第一预设值可以是15次、20次、30次等等，对此，本申请不做具体限定。
举例来讲，当所述存储模块15存储的某一单体电池成为最高电压值的次数超过20次，则所述控制模块14则可以认定该单体电池老化严重，需要更换。进而，所述控制模块14可以将需要更换的单体电池信息发送给车辆的车载系统，车载系统可以将该信息通过显示屏或语音告知用户。
可选地，当所述存储模块15存储有所述电池组11分别在充满电之后或车辆钥匙开关处于OFF档时进行均衡的统计次数大于第二预设值时，则所述控制模块14可以确定所述电池组11老化比较严重，进而可以提示更换所述电池组。具体的，当所述存储模块15存储有所述电池组11进行均衡的统计次数大于第三预设值时，则所述控制模块14可以确定所述电池组11老化比较严重，进而可以提示更换所述电池组，其中，所述电池组11进行均衡的统计次数为所述电池组11分别在充满电之后或车辆钥匙开关处于OFF档时进行均衡的统计次数。所述第二预设值可以是30次、40次、50次等等，对此，本申请不做具体限定。
本申请中的电池均衡系统能够在电池信息采集器于预设时长内未接收到电池管理控制器发送的均衡指令时，电池信息采集器能够根据采集到的电池组的参数信息，依靠自身所包括的控制模块计算需要开启均衡的单体电池以及目标均衡时长，然后按照所述需要开启均衡的单体电池的目标均衡时长控制所述均衡模块对所述需要开启均衡的单体电池进行均衡处理，解决了因通信故障等失效情况而无法接收电池管理控制器发送的均衡指令，进而导致无法进行电池均衡的问题，提高了电池均衡系统均衡的可靠性。
本申请还提供了一种车辆100，如图6所示，其包括上述的电池均衡系统40。其中，各个模块执行操作的具体方式已经在有关电池信息采集器10、电池 均衡系统40的实施例中进行了详细描述，此处将不做详细阐述说明。
图5是根据一示例性实施例示出的一种电池均衡方法的流程图。如图5所示，所述电池均衡方法用于电池均衡系统，所述电池均衡系统包括电池信息采集器和电池管理控制器，所述电池信息采集器包括采集模块、存储模块、均衡模块和控制模块；该方法包括以下步骤。
步骤S51，所述采集模块采集电池组的参数信息，并向所述电池管理控制器发送采集到的所述电池组的参数信息。
步骤S52，所述电池管理控制器接收所述采集模块发送的所述电池组的参数信息，并在确定需要开启均衡的单体电池时，向所述电池信息采集器发送用于指示所述电池组中需要开启均衡的单体电池的均衡指令。
步骤S53，所述存储模块存储所述均衡指令。
步骤S54，所述均衡模块根据存储模块存储的均衡指令，对所述需要开启均衡的单体电池进行均衡处理。
步骤S55，所述控制模块或所述电池管理控制器向所述存储模块发送均衡指令，以使所述控制模块控制所述均衡模块对所述需要开启均衡的单体电池进行均衡处理。
可选地，所述控制模块连接于所述采集模块、所述均衡模块和所述存储模块，所述控制模块在预设时间段内所述存储模块未收到所述电池管理控制器发送的用于控制均衡的均衡指令时，根据所述采集模块采集到的所述电池组的参数信息，生成均衡指令并将所述均衡指令发送到所述存储模块以存储，并控制所述均衡模块对所述需要开启均衡的单体电池进行均衡处理。
可选地，所述电池信息采集器的控制模块收到用于指示所述电池信息采集器进行均衡处理的均衡指令时，所述控制模块接收所述电池组的参数信息，并根据所述电池组的参数信息生成均衡指令并将所述均衡指令发送到所述存储模块以存储，控制所述均衡模块对需要开启均衡的单体电池进行均衡处理。
可选地，所述电池信息采集器的控制模块收到电池管理控制器的故障报文 时，所述控制模块接收所述电池组的参数信息，并根据所述电池组的参数信息生成均衡指令并将所述均衡指令发送到所述存储模块以存储，控制所述均衡模块对需要开启均衡的单体电池进行均衡处理。
关于上述实施例中的电池均衡方法，其中各个步骤的具体方式已经在有关电池信息采集器和电池均衡系统的实施例中进行了详细描述，此处将不做详细阐述说明。
本申请还提供了一种计算机可读存储介质，其上存储有计算机程序指令，该程序指令被处理器执行时实现上述的电池均衡方法。
以上结合附图详细描述了本申请的优选实施方式，但是，本申请并不限于上述实施方式中的具体细节，在本申请的技术构思范围内，可以对本申请的技术方案进行多种简单变型，这些简单变型均属于本申请的保护范围。
另外需要说明的是，在上述具体实施方式中所描述的各个具体技术特征，在不矛盾的情况下，可以通过任何合适的方式进行组合。为了避免不必要的重复，本申请对各种可能的组合方式不再另行说明。
此外，本申请的各种不同的实施方式之间也可以进行任意组合，只要其不违背本申请的思想，其同样应当视为本申请所公开的内容。

Claims (20)

  1. 一种电池信息采集器，其特征在于，包括采集模块、均衡模块、控制模块和存储模块；
    所述采集模块用于采集电池组的参数信息；
    所述存储模块用于接收并存储均衡指令，所述均衡指令为根据所述电池组的参数信息生成的；
    所述控制模块连接于所述采集模块和所述均衡模块，并根据所述存储模块存储的所述均衡指令控制所述均衡模块对需要开启均衡的单体电池进行均衡处理。
  2. 根据权利要求1所述的电池信息采集器，其特征在于，所述控制模块根据所述采集模块采集的电池组的参数信息生成所述均衡指令。
  3. 根据权利要求1所述的电池信息采集器，其特征在于，所述均衡指令为电池管理控制器根据所述采集模块采集的电池组的参数信息生成。
  4. 根据权利要求2或3所述的电池信息采集器，其特征在于，所述电池信息采集器还包括与电池管理控制器连接的接口，所述接口用于传输所述电池组的参数信息至所述电池管理控制器；
    所述控制模块还用于：接收所述电池管理控制器发送的控制指令，并根据所述控制指令开启或停止控制所述均衡模块对所述需要开启均衡的单体电池进行均衡处理；
    其中，所述控制指令包括第一均衡指令和第二均衡指令的至少其中一个，以及所述电池管理控制器的故障报文指令；
    其中，第一均衡指令为用于指示所述电池信息采集器进行均衡处理的均衡指令，第二均衡指令为用于指示所述电池信息采集器停止进行均衡处理的均衡指令。
    。
  5. 根据权利要求4所述的电池信息采集器，其特征在于，所述控制模块，还用于：
    在预设时间段内所述存储模块未收到电池管理控制器发送的第一均衡指令且未收到所述电池管理控制器发送的第二均衡指令时，根据所述采集模块采集到的所述电池组的参数信息，生成均衡指令并将所述均衡指令发送到所述存储模块以存储，并控制所述均衡模块对所述需要开启均衡的单体电池进行均衡处理。
  6. 根据权利要求4所述的电池信息采集器，其特征在于，所述电池信息采集器的控制模块收到所述电池管理器发送的第一均衡指令时，将所述第一均衡指令作为所述均衡指令发送到所述存储模块以存储，以及根据控制所述均衡模块对需要开启均衡的单体电池进行均衡处理。
  7. 根据权利要求4所述的电池信息采集器，其特征在于，所述控制模块还用于：
    在收到电池管理控制器的故障报文时，根据所述电池组的参数信息生成所述均衡指令并将所述均衡指令发送到所述存储模块以存储，控制所述均衡模块对需要开启均衡的单体电池进行均衡处理。
  8. 根据权利要求1-7任意一项所述的电池信息采集器，其特征在于，所述均衡指令包括对需要开启均衡的单体电池进行均衡所需的目标均衡时长。
  9. 根据权利要求1-8任意一项所述的电池信息采集器，其特征在于，所述控制模块通过两个通道分别与对应于同一单体电池的采集模块和均衡模块连接。
  10. 根据权利要求9所述的电池信息采集器，其特征在于，所述控制模块包括控制芯片，所述控制芯片通过两个引脚分别与对应于同一单体电池的采集模块和均衡模块连接，所述两个引脚与所述两个通道一一对应，所述两个引脚中的一个引脚通过所述两个通道中的一个通道与所述均衡模块连接，所述两个引脚中的另一引脚通过所述两个通道中的另一通道与所述采集模块连接。
  11. 根据权利要求1-8任意一项所述的电池信息采集器，其特征在于，所 述控制模块通过一个通道与对应于同一单体电池的采集模块和均衡模块连接，所述采集模块和所述均衡模块分时复用所述通道；
    所述控制模块用于在确定单体电池不需要进行均衡时，控制所述控制模块通过所述通道与对应的采集模块连接；或者，
    所述控制模块还用于在确定单体电池需要进行均衡时，通过所述通道分时连接于对应的采集模块和均衡模块。
  12. 根据权利要求11所述的电池信息采集器，其特征在于，所述控制模块包括控制芯片，所述控制芯片通过一个引脚与对应于同一单体电池的采集模块和均衡模块连接，所述引脚通过所述通道与所述均衡模块和所述采集模块连接。
  13. 根据权利要求12所述的电池信息采集器，其特征在于，所述存储模块还用于存储均衡占空比，所述均衡占空比为所述均衡模块占用所述通道的时长与所述通道被占用的总时长之比；以及，
    所述控制模块还用于按照所述需要开启均衡的单体电池的目标均衡时长和所述均衡占空比控制所述均衡模块对所述需要开启均衡的单体电池进行均衡处理。
  14. 一种电池均衡系统，其特征在于，包括电池管理控制器和如权利要求1-13任意一项所述的电池信息采集器，电池管理控制器和电池信息采集器连接。
  15. 根据权利要求14所述的电池均衡系统，其特征在于，所述电池管理控制器用于根据所述采集模块采集到的所述电池组的参数信息，在确定需要开启均衡的单体电池时，计算单体电池均衡所需的目标均衡时长，并将所述目标均衡时长存储到所述存储模块中，根据所述目标均衡时长控制所述均衡模块对所述需要开启均衡的单体电池进行均衡处理。
  16. 根据权利要求14或15所述的电池均衡系统，其特征在于，所述电池信息采集器的控制模块收到电池管理控制器的故障报文时，所述电池信息采集器的控制模块用于接收所述电池组的参数信息，并根据所述电池组的参数信息生成均衡指令并将所述均衡指令发送到所述存储模块以存储，控制所述均衡模 块对需要开启均衡的单体电池进行均衡处理。
  17. 根据权利要求14-16任意一项所述的电池均衡系统，其特征在于，所述电池信息采集器的存储模块还用于存储以下信息中的至少一者：
    所述采集模块采集到的所述单体电池的参数信息；
    所述电池组的最高电压值或最低电压值；
    每节所述单体电池成为最高电压值或最低电压值的统计次数；
    所述电池组分别在充满电之后或车辆处于OFF档时进行均衡的统计次数。
  18. 根据权利要求17所述的电池均衡系统，其特征在于，所述电池信息采集器的控制模块还用于在所述电池组中有单体电池成为最高电压值或最低电压值的统计次数超过第一预设值时，提示该单体电池需要更换。
  19. 根据权利要求17所述的电池均衡系统，其特征在于，所述电池信息采集器的控制模块还用于在所述电池组在充满电之后或车辆处于OFF档时进行均衡的统计次数大于第二预设值时，提示更换所述电池组。
  20. 一种车辆，其特征在于，包括权利要求14-19中任一项所述的电池均衡系统。
PCT/CN2018/103681 2017-08-31 2018-08-31 电池信息采集器、电池均衡系统、车辆、方法及存储介质 Ceased WO2019042437A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710776099.8 2017-08-31
CN201710776099.8A CN109435776B (zh) 2017-08-31 2017-08-31 电池信息采集器、电池均衡系统、车辆、方法及存储介质

Publications (1)

Publication Number Publication Date
WO2019042437A1 true WO2019042437A1 (zh) 2019-03-07

Family

ID=65526204

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/103681 Ceased WO2019042437A1 (zh) 2017-08-31 2018-08-31 电池信息采集器、电池均衡系统、车辆、方法及存储介质

Country Status (2)

Country Link
CN (1) CN109435776B (zh)
WO (1) WO2019042437A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116381533A (zh) * 2023-03-31 2023-07-04 苏州猛禽电子科技有限公司 基于通讯的电池检测、均衡及数据上传仪

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003189490A (ja) * 2001-12-14 2003-07-04 Honda Motor Co Ltd 蓄電装置の残容量均等化装置
JP2009148127A (ja) * 2007-12-18 2009-07-02 Panasonic Corp 蓄電装置
CN103548233A (zh) * 2011-05-23 2014-01-29 日立车辆能源株式会社 蓄电器控制电路
CN104079016A (zh) * 2013-03-28 2014-10-01 比亚迪股份有限公司 电池组均衡系统及其均衡控制方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201298739Y (zh) * 2008-10-31 2009-08-26 比亚迪股份有限公司 电池组电压均衡装置
JP5718731B2 (ja) * 2011-05-31 2015-05-13 ルネサスエレクトロニクス株式会社 電圧監視システム及び電圧監視モジュール
CN104079017B (zh) * 2013-03-28 2016-08-03 比亚迪股份有限公司 一种电池管理装置、电源系统及电池均衡的方法
CN106549454A (zh) * 2016-12-15 2017-03-29 深圳晶福源科技股份有限公司 一种电压采样与电量均衡共线的电池管理系统和管理方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003189490A (ja) * 2001-12-14 2003-07-04 Honda Motor Co Ltd 蓄電装置の残容量均等化装置
JP2009148127A (ja) * 2007-12-18 2009-07-02 Panasonic Corp 蓄電装置
CN103548233A (zh) * 2011-05-23 2014-01-29 日立车辆能源株式会社 蓄电器控制电路
CN104079016A (zh) * 2013-03-28 2014-10-01 比亚迪股份有限公司 电池组均衡系统及其均衡控制方法

Also Published As

Publication number Publication date
CN109435776A (zh) 2019-03-08
CN109435776B (zh) 2021-02-23

Similar Documents

Publication Publication Date Title
EP3677465B1 (en) Battery equalization method and system, vehicle, storage medium, and electronic device
CN109435775B (zh) 电池均衡方法、系统、车辆、存储介质及电子设备
CN110015182B (zh) 电池均衡系统、车辆、电池均衡方法及存储介质
WO2021088537A1 (zh) 一种电池组并联充放电控制方法和系统
CN116134694B (zh) 动力电池充电的方法和电池管理系统
CN109435777B (zh) 电池均衡系统、车辆、电池均衡方法及存储介质
CN120792615B (zh) 动力系统及电池均衡方法、电动汽车、存储介质
CN116118568A (zh) 一种基于磷酸铁锂电池的均衡方法
CN110857036B (zh) 车辆的电池功率控制方法和装置
CN109428129B (zh) 电池均衡方法、系统、车辆、存储介质及电子设备
WO2019042356A1 (zh) 电池均衡方法、系统、车辆、存储介质及电子设备
CN114552711B (zh) 一种电芯控制方法、装置和bms设备
CN110015130B (zh) 电池均衡系统、车辆、电池均衡方法及存储介质
WO2019042437A1 (zh) 电池信息采集器、电池均衡系统、车辆、方法及存储介质
CN115972984A (zh) 一种动力电池多维度均衡方法、系统、介质及设备
CN110015179B (zh) 电池均衡方法、系统、车辆、存储介质及电子设备
WO2019042441A1 (zh) 电池均衡系统、车辆、电池均衡方法及存储介质
CN115085324A (zh) 一种电池均衡控制方法和控制装置
WO2026040587A1 (zh) 一种电池充电温度控制方法、装置、电子设备及介质
WO2019042430A1 (zh) 电池信息采集器、电池均衡系统、车辆、方法及存储介质
CN119787579A (zh) 电池系统均衡电路、电池系统均衡方法、电子设备以及存储介质
CN116908711B (zh) 电池均衡故障诊断方法及电池系统
WO2018157534A1 (zh) 储能电池管理系统的均衡方法、装置、储能电池管理系统
CN115833330B (zh) 一种适用于通信基站的电池管理系统
CN109435770B (zh) 电池均衡方法、系统、车辆、存储介质及电子设备

Legal Events

Date Code Title Description
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18851098

Country of ref document: EP

Kind code of ref document: A1