CN110015173A - Battery equalization system, vehicle, battery equalization method and storage medium - Google Patents
Battery equalization system, vehicle, battery equalization method and storage medium Download PDFInfo
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- CN110015173A CN110015173A CN201710775028.6A CN201710775028A CN110015173A CN 110015173 A CN110015173 A CN 110015173A CN 201710775028 A CN201710775028 A CN 201710775028A CN 110015173 A CN110015173 A CN 110015173A
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 230000005611 electricity Effects 0.000 claims description 19
- 239000000178 monomer Substances 0.000 claims description 17
- 238000005303 weighing Methods 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 5
- 241000208340 Araliaceae Species 0.000 claims description 3
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 claims description 3
- 235000003140 Panax quinquefolius Nutrition 0.000 claims description 3
- 238000004590 computer program Methods 0.000 claims description 3
- 235000008434 ginseng Nutrition 0.000 claims description 3
- 238000005070 sampling Methods 0.000 abstract description 21
- 230000000875 corresponding effect Effects 0.000 description 40
- 238000013459 approach Methods 0.000 description 7
- 238000012797 qualification Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000002596 correlated effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- 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—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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The present disclosure discloses a kind of battery equalization system, vehicle, battery equalization method and storage mediums.The battery equalization system includes acquisition module, balance module and control module, and the control module is selectively connect with the acquisition module and balance module for corresponding to same single battery by a control channel；When the control module is connect with the acquisition module, the acquisition module is used to acquire the parameter information of single battery in battery pack；When the control module is connect with the balance module, the balance module is used to carry out equilibrium treatment to the single battery in the battery pack.Due to one control channel of voltage sample module and balance module time-sharing multiplex of control module and each section single battery in the disclosure, reduces the number of channels requirement to control module, thereby reduce hardware cost；And due to battery sampling and balanced separately progress, euqalizing current will not influence cell voltage, to improve the precision of battery voltage sampling.
Description
Technical field
This disclosure relates to battery pack balancing field, and in particular, to a kind of battery equalization system, vehicle, battery balanced side
Method and storage medium.
Background technique
In electric car, battery pack is its important component part.Since battery pack is connected by multiple single batteries
It is formed by connecting, with the use of battery, the otherness in battery pack between each monomer is gradually expanded, and leads to consistency between battery cell
Difference.Due to the short -board effect of battery, prevents battery capacity from giving full play to, the whole volume of battery pack is caused to reduce.Therefore,
Effective balanced management is carried out to the battery pack of electric car, is conducive to the consistency for improving each single battery in battery pack, subtracts
The capacitance loss of few battery, extends the service life and electric car continual mileage of battery, has a very important significance.
In correlated equilibrium technology, battery equalization system is generally included: a battery management controller, multiple battery informations
Collector, wherein each battery information collector includes control unit, battery sampling circuit, battery equalizing circuit etc. three
Module, and battery sampling circuit and battery equalizing circuit apply different channels respectively.Every section single battery of battery pack configures
One battery detection circuit channel and battery equalizing circuit channel.Its workflow are as follows: battery sampling circuit is responsible for battery electricity
Information is pressed to carry out real-time sampling, the control unit of battery information collector sends battery sampling information to battery management controller,
Battery management controller judges whether to need to open equilibrium, then sends equilibrium to the control unit of battery information collector and refers to
It enables, is opened by the control unit control battery equalizing circuit of battery information collector balanced.
In correlated equilibrium technology practical application, due to control unit and each section single battery voltage sampling circuit and
A control channel is respectively needed between equalizing circuit, is increased the number of channels requirement to controller, is caused hardware cost higher；
And since battery sampling and equilibrium carry out simultaneously, euqalizing current will affect cell voltage, to influence battery voltage sampling
Precision.
Summary of the invention
Purpose of this disclosure is to provide a kind of battery equalization system, vehicle, battery equalization method and storage mediums, for solving
The certainly higher technical problem of the hardware cost of battery equalization system in the related technology.
To achieve the goals above, the disclosure provides a kind of battery equalization system, including acquisition module, balance module and control
Molding block, the control module by a control channel selectively with the acquisition module that corresponds to same single battery and equal
The module that weighs connection；
When the control module is connect with the acquisition module, the acquisition module is for acquiring single battery in battery pack
Parameter information；
When the control module is connect with the balance module, the balance module is used for the monomer in the battery pack
Battery carries out equilibrium treatment；
The control module according to the parameter information of single battery in the battery pack for determining in the battery pack
When thering is single battery to need to open equilibrium, controls the balance module and equilibrium is carried out to the single battery for needing unlatching balanced
Processing.
Optionally, the control module includes control chip, the control chip by pin with corresponding to same
The acquisition module of single battery is connected with balance module, and the pin passes through the control channel and the balance module and described
Acquisition module connection.
Optionally, the battery equalization system is used for multiple single batteries, and the control module includes control chip, described
Multiple single batteries are connected one to one by multiple channels and multiple pins of the control chip.
Optionally, the control module includes that the first control unit of battery information collector is arranged in and is arranged in battery
Second control unit of Management Controller, the first control unit and second control unit are selectively to needing equilibrium
Single battery carry out Balance route.
Optionally, the acquisition module includes Acquisition Circuit, and the balance module includes equalizing circuit, same single battery
Acquisition Circuit and equalizing circuit all pass through selection switch and connect with the control module, the selection is switched and is selectively connected
The Acquisition Circuit or the equalizing circuit.
Optionally, corresponding when the control module determines that the single battery in the battery pack does not need to carry out equilibrium
It is connect by the corresponding control channel with the control module in the acquisition module of the single battery；Alternatively, in the control
Molding block determine in the battery pack single battery need progress it is balanced when, corresponding to the single battery acquisition module with
Balance module timesharing is connected to the control module.
Optionally, the control module is also used to need to open according to the described of parameter information acquisition by the battery pack
The target equilibrium duration of the single battery of equilibrium and balanced duty ratio control the balance module and open equilibrium to the needs
Single battery carries out equilibrium treatment, the equilibrium duty ratio be the balance module occupy the duration of the control channel with it is described
The ratio between occupied total duration of control channel.
Optionally, the control module is also used to be determined according to the target equilibrium duration and the balanced duty ratio balanced
Period and acquisition time section, it is occupied that the sum of the time for balance section and the acquisition time section are equal to the control channel
Total duration；In the time for balance section, the control channel is connected to the balance module, so that the balance module is to the electricity
The single battery of Chi Zuzhong carries out equilibrium treatment；In the acquisition time section, the control channel is connected to the acquisition module, with
The acquisition module is set to acquire the parameter information of the battery pack.
Optionally, the control module is used to obtain the mesh for needing to open balanced single battery in the following manner
Mark balanced duration:
According to the parameter information of the collected battery pack of the acquisition module, determine in the battery pack whether there is list
Body battery needs to open balanced；
When thering is single battery to need to open balanced in determining the battery pack, according to the parameter information meter of the battery pack
Calculate the target equilibrium duration for needing to open balanced single battery.
Optionally, the control channel is equipped with control switch；When the parameter for needing the acquisition module acquisition battery pack
When information, the control module controls the control switch and is connected to the acquisition module, so that the control channel is connected to institute
State acquisition module；When needing the balance module to carry out equilibrium treatment to the single battery in the battery pack, the control
Module controls the control switch and is connected to the balance module, so that the control channel is connected to the balance module.
Optionally, the control switch is single-pole double-throw switch (SPDT), and the control module is connected to the single-pole double-throw switch (SPDT)
Moved end, the acquisition module is connected to the first non-moving end of the single-pole double-throw switch (SPDT), and the balance module is connected to described
Second non-moving end of single-pole double-throw switch (SPDT).
Optionally, when the single battery in the battery pack does not need to carry out equilibrium treatment, the acquisition of the single battery
Module is connect by the corresponding control channel with the control module.
Optionally, the control module is also used to the difference of the minimum voltage in monomer battery voltage and each single battery
When value is greater than predeterminated voltage difference threshold value, controls the balance module and discharge the single battery.
Optionally, the control module is also used to the maximum voltage in the voltage and each single battery of single battery
Difference controls the balance module when being greater than predeterminated voltage difference threshold value and charges to the single battery.
Optionally, the parameter information of the battery pack include voltage value, SOC value, self-discharge rate, internal resistance of single cell value,
At least one of current value, temperature value.
The disclosure additionally provides a kind of vehicle, including above-mentioned battery equalization system.
The disclosure additionally provides a kind of battery equalization method, is applied to battery equalization system,
The battery equalization system includes control module, acquisition module and balance module；The control module passes through one
Control channel is connect with the acquisition module of same single battery and balance module in battery pack is corresponded to, and the acquisition module is equal with this
Weigh control channel described in array signal processing；This method comprises:
The control channel is connected to the acquisition module；
The parameter information of single battery in battery pack is acquired by the acquisition module；
Determine there are single battery need in the battery pack according to the parameter information of the battery pack by the control module
Open equilibrium；
The control channel is connected to balance module corresponding to the single battery for needing to open equilibrium；
The balance module, which is controlled, by the control module needs to open balanced single battery progress equilibrium to described
Processing.
Optionally, described to determine in the battery pack have according to the parameter information of the battery pack by the control module
Single battery needs to open balanced, comprising:
The monomer electricity for needing to open equilibrium is determined according to the parameter information of the battery pack by the control module
Pond, the target equilibrium duration for needing to open balanced single battery and balanced duty ratio, the equilibrium duty ratio is described
Balance module occupies the ratio between duration and the occupied total duration of the control channel of the control channel；
It is described that the balance module is controlled to the single battery progress for needing to open equilibrium by the control module
Equilibrium treatment, comprising:
By the control module according to the target equilibrium duration for needing to open balanced single battery and it is described
Weighing apparatus duty ratio controls the balance module and needs to open balanced single battery progress equilibrium treatment to described.
Optionally, this method further include:
By the control module according to the target equilibrium duration and the balanced duty ratio determine time for balance section and
Acquisition time section, the sum of the time for balance section and the acquisition time section are equal to the occupied total duration of the control channel；
It is described that the control channel is connected to the acquisition module, comprising:
In the acquisition time section, the control channel is connected to the acquisition module；
It is described that the control channel is connected to balance module corresponding to the single battery for needing to open equilibrium, packet
It includes:
In the time for balance section, the control channel is connected to equal corresponding to the single battery for needing to open equilibrium
Weigh module.
Optionally, the parameter information according to the battery pack determines the mesh for needing to open balanced single battery
Mark balanced duration, comprising:
Whether according to the parameter information of the collected battery pack, determining in the battery pack has single battery needs to open
Open equilibrium；
When thering is single battery to need to open balanced in determining the battery pack, calculates the needs and open balanced monomer
The target equilibrium duration of battery.
Optionally, when the single battery in the battery pack does not need to carry out equilibrium treatment, this method further include:
The acquisition module of the single battery is connect by the corresponding control channel with the control module.
Optionally, described that the balance module is controlled to the monomer electricity for needing to open equilibrium by the control module
Pond carries out equilibrium treatment, comprising:
Control the balance module by the control module needs the single battery for opening equilibrium to discharge to described.
Optionally, described that the balance module is controlled to the monomer electricity for needing to open equilibrium by the control module
Pond carries out equilibrium treatment, comprising:
Control the balance module by the control module needs the single battery for opening equilibrium to charge to described.
The disclosure additionally provides a kind of computer readable storage medium, is stored thereon with computer program instructions, the program
Instruction realizes above-mentioned battery equalization method when being executed by processor.
The technical scheme provided by this disclosed embodiment can include the following benefits:
Since the voltage sampling circuit of control module and each section single battery in the disclosure and equalizing circuit timesharing are multiple
With a channel, reduces the number of channels requirement to control module, thereby reduce hardware cost；And due to battery sampling
It is separately carried out with balanced, euqalizing current will not influence cell voltage, to improve the precision of battery voltage sampling.
Other feature and advantage of the disclosure will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
Attached drawing is and to constitute part of specification for providing further understanding of the disclosure, with following tool
Body embodiment is used to explain the disclosure together, but does not constitute the limitation to the disclosure.In the accompanying drawings:
Fig. 1 is a kind of block diagram of battery equalization system shown according to an exemplary embodiment.
Fig. 2 is a kind of another block diagram of battery equalization system shown according to an exemplary embodiment.
Fig. 3 is a kind of flow chart of battery equalization method shown according to an exemplary embodiment.
Fig. 4 is a kind of another flow chart of battery equalization method shown according to an exemplary embodiment.
Fig. 5 is that determination needs to open during a kind of battery equalization method shown according to an exemplary embodiment includes the steps that
The flow chart of balanced single battery and its target equilibrium duration.
Fig. 6 is a kind of another flow chart of battery equalization method shown according to an exemplary embodiment.
Fig. 7 is a kind of another flow chart of battery equalization method shown according to an exemplary embodiment.
Specific embodiment
It is described in detail below in conjunction with specific embodiment of the attached drawing to the disclosure.It should be understood that this place is retouched
The specific embodiment stated is only used for describing and explaining the disclosure, is not limited to the disclosure.
Fig. 1 is a kind of block diagram of battery equalization system shown according to an exemplary embodiment.As shown in Figure 1, the electricity
The equal balance system in pond includes acquisition module 12, balance module 13 and control module 14, wherein battery pack 11 is by multiple monomer electricity
Pond 111 is connected in series.
In Fig. 1, the control module 14 passes through a control channel 140 and adopting corresponding to same single battery 111
Collect module 12 and balance module 13 connects, control channel 140 described in the acquisition module 12 and 13 time-sharing multiplex of balance module.Institute
Stating control module 14 includes control chip, and the control chip passes through a pin and adopting corresponding to same single battery 111
Collect module 12 and balance module 13 to connect, the pin is by the control channel 140 and the balance module 13 and described adopts
Collect module 12 to connect.
The disclosure corresponds to the acquisition module 12 of same single battery 111 and balance module 13 shares the one of control module 14
A control channel 140 so that the port number of required control module 14 is reduced, and then reduces the number of channels to control module 14
It is required that.
For example, when existing acquisition module, balance module pass through a control channel respectively and be connected with control module,
N number of single battery is corresponding with 2N control channel.And the acquisition module and balance module of the same single battery of the disclosure share one
A control channel is connect with control module, and N number of single battery is corresponding with N number of control channel, so as to reduce control channel
Quantity reduces the cost of control module.
When existing acquisition module, balance module pass through a control channel respectively and are connected with control module, N number of list
Body battery corresponds to 2N control channel, needs to control 2N control channel.The acquisition mould of the same single battery of the disclosure
Block and balance module share a control channel of control module, and single battery N number of in this way corresponds to N number of control channel, it is only necessary to
N number of control channel is controlled, can simplify control flow in this way, reduces the misuse rate of control module.
When existing acquisition module, balance module pass through a control channel respectively and are connected with control module, N number of list
Body battery corresponds to 2N control channel, connects the qualification rate of control module by the qualification rate of 2N control channel by control channel
It determines.The acquisition module and balance module of the same single battery of the disclosure share a control channel of control module, N number of monomer
Battery corresponds to N number of control channel, is determined by the qualification rate that control channel connects control module by the qualification rate of N number of control channel
It is fixed, total qualification rate that multiple single batteries in whole system connect control module by control channel can be improved in this way, in turn
Improve the qualification rate of battery equalization system.
As shown in Figure 1, the acquisition module 12 is used to acquire the parameter information of single battery 111 in battery pack 11, and to
The control module 14 sends the parameter information of the collected battery pack, the single battery 111 in the battery pack 11 with
Acquisition module 12 corresponds.Wherein, the parameter information includes the information such as cell voltage, temperature.The control module 14 is logical
It crosses and control channel 140 is connected to the acquisition module 12, and then state the ginseng that acquisition module 12 acquires battery pack 11 described in control
Number information.
In one embodiment, in the acquisition time section of unit period, the control module 14 is by by control channel
140 are connected to the acquisition module 12, and then the parameter information of battery pack 11 is acquired by the acquisition module 12, wherein single
Bit period includes acquisition time section and time for balance section, the parameter information of battery pack 11 include voltage value, SOC value, self-discharge rate,
At least one of internal resistance of single cell value, current value, temperature value.
It should be noted that all acquisition modules 12 work at the same time, and all balance modules in acquisition time section
13 stop working, that is to say, that the battery information of each single battery 111 is synchronous acquisition in battery pack 11.
Specifically, in the sampling periods of unit period, acquisition module obtains the battery letter of each single battery of battery pack
Breath, control module, which determines, to be needed to carry out balanced single battery.In the balancing period of unit period, equilibrium is carried out to needs
Single battery carries out balanced.In balancing period, the single battery for not needing to carry out equilibrium is stopped obtaining corresponding single battery
Battery information.Scheme in this way, balance module carry out equilibrium treatment and acquisition module to battery information to battery pack
Acquisition time segment independently executes, and does not interfere with each other, and can carry out simultaneously to avoid the acquisition of battery information and the equilibrium of single battery,
To avoid euqalizing current to the influence of the battery information of acquisition single battery, the battery information sampling of single battery can be improved
Precision.
As shown in Figure 1, the control module 14 is connected to the acquisition module 12 and the balance module 13.It is incited somebody to action when described
When control channel 140 is connected to the acquisition module 12, the control module 14 is used to receive the parameter letter of the battery pack 11
Breath.The control module 14 determined according to the parameter information of the battery pack 11 it is in need in the more piece single battery 111
When the single battery 111 of equilibrium, control channel 140 is connected to the balance module 13 by the control module 14, so that this is
The module 13 that weighs carries out equilibrium treatment to the single battery 111.
In one embodiment, the control module 14, which determines, needs to carry out balanced single battery 111, and as needed
The target equilibrium duration for carrying out balanced single battery 111, in the time for balance section of one or more unit periods, control is needed
It carries out 13 pieces balanced of 111 corresponding equilibrium model of single battery and equilibrium is carried out to the single battery 111, so that the single battery
The 111 accumulative balanced duration in the time for balance section of one or more unit periods reaches its corresponding target equilibrium duration.
As shown in Figure 1, the balance module 13 is for carrying out balanced place to the single battery 111 in the battery pack 11
It manages, the single battery 111 and the balance module 13 in the battery pack 11 correspond.When in need in the battery pack 11
When the single battery 111 of equilibrium, the control module 14 is by being connected to the balance module 13 for control channel 140, in turn
It controls the balance module 13 and needs balanced single battery 111 to carry out equilibrium treatment to described.
In one embodiment, in time for balance section, the control module 14 is in the one or more unit period
In time for balance section, the parameter for then stopping obtaining corresponding single battery 111 to the single battery 111 for not needing progress equilibrium is believed
Breath, until the acquisition time section of next unit period, that is to say, that
In time for balance section, the corresponding balance module 13 of single battery 111 of only equilibrium in need works and to each list
The equilibrium treatment of body battery 111 carries out simultaneously, the monomer electricity in battery pack 11 in addition to needing balanced single battery 111
Balance module 13 corresponding to pond 111 and all acquisition modules 12 stop working.
In one embodiment, after the parameter information for getting each single battery 111, it may be determined that go out each single battery
111 performance parameter and performance parameter reference value, and according to the performance parameter and performance parameter reference value of each single battery 111
Determine to need to carry out balanced single battery 111, and according to the mode of equilibrium judgement according to corresponding balanced way to needs
It carries out balanced single battery 111 and carries out equilibrium treatment.
Referring to following table 1, when parameter information be respectively SOC value, internal resistance of single cell value, self-discharge rate, voltage change ratio,
When electric quantity change rate or time rate of change, judge that the method for needing to carry out balanced single battery and the corresponding of balanced way are closed
System.
Table 1
Wherein, in embodiment of the disclosure, the self-discharge rate of single battery refers to that single battery (stops in open-circuit condition
Only charge or stop discharging) under, the holding capacity of the electricity stored under certain condition.The self-discharge rate of single battery
Be characterize single battery characteristic important parameter, can Efficient Characterization single battery capacitance loss situation and capacitance loss rate.
The voltage change ratio of single battery refers to voltage change ratio of single battery during charging (or electric discharge), including
Voltage with charging (or electric discharge) time rate of change dv/dt and voltage with capacity rate of change dv/dq.
The electric quantity change rate of single battery refers to that single battery during charging (or electric discharge), rises (or decline) one
The electricity of (or releasing), i.e. dq/dv are filled with needed for a unit voltage.
The time rate of change of single battery refers to that single battery during charging (or electric discharge), rises (or decline) phase
With time needed for voltage value, i.e. dt/dv.
Passive equilibrium, which refers to, discharges to the single battery 111 for needing progress balanced.For example, being set in balance module 13
The resistance in parallel with single battery 111 to be equalized is set, in the time for balance section of unit period, the control of control module 14 should be to equal
Shunt circuit conducting between the corresponding resistance of weighing apparatus single battery 111, to execute to the passive equal of the single battery 111
Weighing apparatus, to achieve the effect that each single battery 111 is balanced in battery pack 11.Optionally, the resistance can be the heat of positive temperature coefficient
Quick resistance, resistance value can variation with temperature and change, the euqalizing current generated when thus adjustable balanced, and then automatically adjust
The calorific value of battery equalization system, and finally control effectively to the temperature of battery equalization system.
When the battery equalization system carries out equilibrium treatment to single battery using passive balanced way, i.e., to the needs
When the balanced single battery 111 of unlatching is discharged, the control module 14 can also determine the needs in the following manner
Open balanced single battery 111:
Firstly, according to the voltage value of each single battery 111 in the collected battery pack 11 of the acquisition module 12, it will
The smallest voltage value is worth as the reference voltage in the voltage value of each single battery 111 in the battery pack 11；
Then, according to the electricity between the voltage value and the reference voltage value of single battery 111 each in the battery pack 11
The single battery 111 that voltage difference is greater than or equal to predeterminated voltage difference threshold value is determined as the needs and opens equilibrium by pressure difference
Single battery 111.
Active equalization refers to that the balance module 13 is equal using charging to the single battery 111 for needing equilibrium
Weigh processing mode, for example, by the generator or battery for needing balanced single battery 111 to be connected to vehicle, Jin Ertong
It crosses the generator or the battery and needs balanced single battery 111 to charge to described.
When the battery equalization system carries out equilibrium treatment to single battery using active equalization mode, i.e., to the needs
When the balanced single battery 111 of unlatching is charged, the control module 14 can determine that the needs are opened in the following manner
Open balanced single battery 111:
Firstly, according to the voltage value of each single battery 111 in the collected battery pack 11 of the acquisition module 12, it will
Maximum voltage value is worth as the reference voltage in the voltage value of each single battery 111 in the battery pack 11；
Then, according to the electricity between the voltage value and the reference voltage value of single battery 111 each in the battery pack 11
The single battery 111 that voltage difference is greater than or equal to predeterminated voltage difference threshold value is determined as the needs and opens equilibrium by pressure difference
Single battery 111.
Optionally, when the single battery 111 in the battery pack 11 does not need to carry out equilibrium treatment, the single battery
111 acquisition module 12 is connect by corresponding control channel 140 with the control module 14.The i.e. described control module 14 determines
When the single battery 111 terminates equilibrium, the control module 14 will control the corresponding balance module 13 of single battery 111 and control
Channel 140 processed disconnects, and controls the corresponding acquisition module 12 of single battery 111 and be connected to control channel 140.
Optionally, the needs that the control module 14 can also be determined according to the parameter information by the battery pack 11
The target equilibrium duration for opening balanced single battery 111 controls the balance module 13 and needs to open balanced monomer to described
Battery 111 carries out equilibrium treatment.The control module 14 can obtain the monomer for needing to open equilibrium in the following manner
The target equilibrium duration of battery 111: according to the parameter information of the collected battery pack 11 of the acquisition module 12, institute is determined
Whether state in battery pack 11 has single battery 111 to need to open equilibrium；There is single battery 111 to need in determining the battery pack 11
When opening equilibrium, the mesh for needing to open balanced single battery 111 is calculated according to the parameter information of the battery pack 11
Mark balanced duration.
For example, can using the smallest voltage value in the voltage value of each single battery 111 of the battery pack 11 as
The reference voltage value, the predeterminated voltage difference threshold value can be 5mV (or other numerical value).Firstly, the control module 14
Control channel 140 is connected to the acquisition module 12, and then states each list that acquisition module 12 acquires battery pack 11 described in control
111 voltage value of body battery；
Then, the control module 14 is compared to obtain minimum amount of voltage that Vmin in each single battery 111, and described in judgement
Whether the voltage value of each single battery 111 of battery pack 11 and the difference of Vmin are less than 5mV.If it is, the battery pack 11
Balanced consistency is fine, does not need equilibrium；If it is greater than 5mV, then it will be greater than 111 conduct of single battery of 5mV with Vmin difference
Need to open balanced single battery 111.
Then, after determining the single battery 111 for needing to open equilibrium, can be balanced according to the needs unlatching
The voltage value and Vmin of single battery 111 calculate the target equilibrium duration for needing to open balanced single battery 111, into
And control channel 140 is connected to the balance module 13 by the control module 14, and then the control module 14 is according to described
The target equilibrium duration for needing to open balanced single battery 111 controls the balance module 13 and opens equilibrium to the needs
Single battery 111 discharges.
Then, after electric discharge starts, the control module 14 counts the balance module 13 and opens equilibrium to the needs
Single battery 111 electric discharge duration, when the difference of the electric discharge duration of the single battery 111 duration balanced with the target is in threshold
When being worth in range, stop electric discharge, equilibrium terminates.The control module 14 will control the corresponding balance module of single battery 111
13 disconnect with control channel 140, and control the corresponding acquisition module 12 of single battery 111 and be connected to control channel 140.
Since the voltage sample module of control module and each section single battery in the disclosure and balance module timesharing are multiple
With a channel, reduces the number of channels requirement to control module, thereby reduce hardware cost；And due to battery sampling
It is separately carried out with balanced, euqalizing current will not influence cell voltage, to improve the precision of battery voltage sampling.
Please continue to refer to Fig. 1, the control module 14 can also be according to the target equilibrium duration and balanced duty ratio control
It makes the balance module 13 and needs to open the balanced progress equilibrium treatment of single battery 111 to described, the equilibrium duty ratio is
The balance module 13 occupies the ratio between duration and the occupied total duration of the control channel 140 of the control channel 140；Its
In, the occupied total duration of the control channel 140 include the balance module 13 occupy the duration of the control channel 140 with
And the acquisition module 12 occupies the duration of the control channel 140.
As shown in Figure 1, firstly, the control module 14 is by 140 connection of control channel in the acquisition module 12, Jin Erke
To state the parameter information that acquisition module 12 acquires battery pack 11 described in control；Then, the control module 14 is according to the electricity
The parameter information of single battery 111 determines when having single battery 111 to need to open balanced in the battery pack 11 in pond group 11, obtains
Take the target equilibrium duration for needing to open balanced single battery 111 and balanced duty ratio, and by the control channel 140
Connection needs to open balance module 13 corresponding to balanced single battery 111 in described；Then, the control module 14 according to
It is described that the target equilibrium duration for opening balanced single battery 111 and balanced duty ratio is needed to control the balance module 13 to described
It needs to open balanced single battery 111 and carries out equilibrium treatment.
Optionally, the control module 14 determines time for balance according to the target equilibrium duration and the balanced duty ratio
Section and acquisition time section, it is occupied that the sum of the time for balance section and the acquisition time section are equal to the control channel 140
Total duration；In the acquisition time section, the control channel 140 is connected to the acquisition module 12, so that the acquisition module 12
Acquire the parameter information of the battery pack 11；In the time for balance section, the connection of control channel 140 needs to carry out at equilibrium
The balance module 13 of reason, so that the balance module 13 carries out the single battery 111 for needing equilibrium in the battery pack 11
Weighing apparatus processing.
It should be noted that in one embodiment, it is necessary to carrying out the balanced duration of balanced single battery can preset,
Such as it can be set according to multiple balance test or experience.
Fig. 2 is a kind of another block diagram of battery equalization system shown according to an exemplary embodiment.As shown in Fig. 2, institute
Stating battery equalization system includes acquisition module 12, balance module 13 and control module 14.With the battery equalization system in Fig. 1
Difference is, is equipped with control switch 141 in the control channel 140 of battery equalization system 10 in Fig. 2.
It is when needing the acquisition module 12 to acquire the parameter information of battery pack 11, i.e., described in the acquisition time section
Control module 14 controls the control switch 141 and is connected to the acquisition module 12 so that the control channel 140 be connected to it is described
Acquisition module 12.When needing the balance module 13 to carry out equilibrium treatment to the single battery 111 in the battery pack 11, i.e.,
In the time for balance section, the control module control 14 makes the control switch 141 and is connected to the balance module 13, so that institute
It states control channel 140 and is connected to the balance module 13.
As shown in Fig. 2, the control switch 141 can be single-pole double-throw switch (SPDT), the control module 14 is connected to described
The moved end of single-pole double-throw switch (SPDT), the acquisition module 12 are connected to the first non-moving end of the single-pole double-throw switch (SPDT), the equilibrium
Module 13 is connected to the second non-moving end of the single-pole double-throw switch (SPDT).In the acquisition time section, the control module 14 is controlled
The moved end of the single-pole double-throw switch (SPDT) is connected to first non-moving end；In the time for balance section, the control module 14 is controlled
The moved end for making the single-pole double-throw switch (SPDT) is connected to second non-moving end.
The disclosure can physically disconnect control unit by the way that selection switch is arranged on the interface channel of control module
Contacting between Acquisition Circuit, equalizing circuit, can be to avoid maloperation, for example, there is the equal of mistake in acquisition time section
When weighing apparatus instruction, since selection is switched without connecting the control module and the equalizing circuit, the equalizing circuit cannot receive
The equalization instruction of mistake, so as to avoid maloperation；And do not sampled when can be realized equilibrium, when sampling unbalanced effect,
To which euqalizing current will not influence cell voltage, thus precision when improving battery voltage sampling.
The disclosure in control channel by being arranged control switch, in the parameter information for needing to acquire battery pack, will control
System switch is connected to acquisition module, and when needing balanced, control switch is connected to balance module, realizes time-sharing multiplex one
A control channel reduces the number of channels requirement to control module, thereby reduces hardware cost；
In addition, the disclosure by by control switch be arranged between control module and acquisition module, balance module, the control
Molding block can not be adopted when having the function that acquisition and equilibrium, and can be realized equilibrium by the state of adjusting control switch
Sample, when sampling unbalanced effect, so that euqalizing current will not influence cell voltage, thus when improving battery voltage sampling
Precision.
The another disclosure can physically disconnect control module and acquisition module, balance module by setting control switch
Between connection, can to avoid maloperation, for example, in acquisition time section exist mistake equalization instruction when, due to control open
It closing without connecting the control module and the balance module, the balance module is unable to the equalization instruction of acceptance error, thus
Avoid maloperation.
Optionally, the battery equalization system can be used for multiple single batteries, and the control module includes control chip,
The multiple single battery is connected one to one by multiple channels and multiple pins of the control chip.
When existing acquisition module, balance module pass through a control channel respectively and be connected with control module, each
Single battery corresponds to two control channels, a pin of the corresponding control chip of each control channel, i.e., N number of single battery corresponds to
2N pin.And the acquisition module and balance module of the same single battery of the disclosure share a control channel and control module connects
It connects, the corresponding pin of a control channel, i.e., N number of single battery corresponds to N number of control channel, and corresponding N number of pin in this way can
The demand of control chip pin is reduced, on the basis of existing technology, it is possible to reduce the pin number of half effectively reduces control
Chip cost processed.
Optionally, the control module includes the first control unit being arranged in battery information collector, and setting exists
The second control unit in battery management controller.Optionally, the acquisition module is by the first control unit to described
Second control unit sends the parameter information of single battery in collected battery pack；Wherein, the acquisition mould of same single battery
Block and balance module correspond to an interface channel of first control unit.
The first control unit can be connected to the acquisition module by controlling the interface channel, and then control institute
State the parameter information of single battery in acquisition module acquisition battery pack.Second control unit can also by communication unit to
The first control unit sends acquisition instructions, described to be connected to by the first control unit control interface channel
Acquisition module.
The first control unit can be connected to the balance module by controlling the interface channel, and then control institute
It states balance module and needs to open balanced single battery progress equilibrium treatment to described.The first control unit can will be described
The parameter information of the battery pack of Acquisition Circuit acquisition issues second control unit, and second control unit is according to battery pack
Parameter information determine and need to open balanced single battery, and sent to the first control unit by communication unit balanced
Instruction is connected to the balance module to control the interface channel by the first control unit.
When the acquisition module in battery equalization system is to be collected by first control unit to the transmission of the second control unit
Battery pack in single battery parameter information when, corresponding first control of the acquisition module and balance module of same single battery is single
One interface channel of member, reduces the quantity in channel needed for first control unit.
The first control unit of battery information collector and the second control unit property of can choose of battery management controller
Ground carries out Balance route to the single battery for needing equilibrium.That is, first control unit can control balance module to needing to carry out
Balanced single battery carries out equilibrium treatment, and the second control unit also can control balance module to the monomer for needing to carry out equilibrium
Battery carries out equilibrium treatment.Wherein, the ginseng for the battery pack that first control unit or the second control unit are acquired according to acquisition module
Number information, which determines, to be needed to carry out balanced single battery.
The battery information collector when preset duration does not receive the equalization instruction that the battery management controller is sent,
The first control unit receives the parameter information of the battery pack, and determines the electricity according to the parameter information of the battery pack
When Chi Zuzhong has single battery to need to open balanced, control balance module carries out at equilibrium to needing to open balanced single battery
Reason.
When the battery information collector receives the instruction for being used to indicate the battery information collector progress equilibrium treatment,
The first control unit receives the parameter information of the battery pack, and determines the electricity according to the parameter information of the battery pack
When Chi Zuzhong has single battery to need to open balanced, control balance module carries out at equilibrium to needing to open balanced single battery
Reason.
When the battery information collector receives battery management controller failure message, the first control unit receives institute
The parameter information of battery pack is stated, and determining in the battery pack according to the parameter information of the battery pack there are single battery needs to open
When opening equilibrium, control balance module carries out equilibrium treatment to needing to open balanced single battery.
Battery information collector and battery management controller can pass through first control unit and the second control unit respectively
Selectively equal balance system is controlled, can be lost in this way in battery information collector and battery management controller alternative one
When effect or failure, still guarantee the normal operation of battery equalization system.
The disclosure additionally provides a kind of vehicle, including above-mentioned battery equalization system.
About the vehicle in above-described embodiment, the battery equalization system that wherein vehicle includes is in above-mentioned battery equalization system
It is described in detail in embodiment, no detailed explanation will be given here.
Fig. 3 is a kind of flow chart of battery equalization method shown according to an exemplary embodiment.As shown in figure 3, described
Battery equalization method be applied to battery equalization system, the battery equalization system include battery pack, control module, acquisition module and
Balance module；The control module by control channel with correspond in battery pack the acquisition module of same single battery and
Balance module connection, the acquisition module and control channel described in the balance module time-sharing multiplex；This approach includes the following steps.
The control channel is connected to the acquisition module by step S31.
Step S32 acquires the parameter information of single battery in battery pack by the acquisition module.
Step S33 determines in the battery pack there is list according to the parameter information of the battery pack by the control module
Body battery needs to open balanced.
The control channel is connected to balance module corresponding to the single battery for needing to open equilibrium by step S34.
Step S35 controls the balance module by the control module and needs to open balanced single battery to described
Carry out equilibrium treatment.
Fig. 4 is a kind of another flow chart of battery equalization method shown according to an exemplary embodiment.As shown in figure 4,
This approach includes the following steps.
The control channel is connected to the acquisition module by step S41.
Step S42 acquires the parameter information of single battery in battery pack by the acquisition module.
Step S43 determines that the needs open equilibrium according to the parameter information of the battery pack by the control module
Single battery, the target equilibrium duration for needing to open balanced single battery and balanced duty ratio, the equilibrium duty
The ratio between occupied total duration of duration and the control channel than occupying the control channel for the balance module.
The control channel is connected to balance module corresponding to the single battery for needing to open equilibrium by step S44.
Step S45, by the control module according to the target equilibrium duration for needing to open balanced single battery
The balance module, which is controlled, with the balanced duty ratio needs to open balanced single battery progress equilibrium treatment to described.
Optionally, as shown in figure 5, the parameter information according to the battery pack determines the list for needing to open equilibrium
The target equilibrium duration of body battery, comprising:
Step S431 determines the electricity by the control module according to the parameter information of the collected battery pack
Whether Chi Zuzhong has single battery to need to open equilibrium；
Step S432 passes through the control module when having single battery to need to open balanced in determining the battery pack
The target equilibrium duration for needing to open balanced single battery is calculated according to the parameter information of the battery pack.
Optionally, this method further include: accounted for by the control module according to the target equilibrium duration and the equilibrium
Sky is equal to the control than determining time for balance section and acquisition time section, the sum of the time for balance section and the acquisition time section
The occupied total duration in channel；
Wherein, described that the control channel is connected to the acquisition module, comprising:, will be described in the acquisition time section
Control channel is connected to the acquisition module；
It is described that the control channel is connected to balance module corresponding to the single battery for needing to open equilibrium, packet
Include: in the time for balance section, the control channel is connected to equilibrium model corresponding to the single battery for needing to open equilibrium
Block.
Fig. 6 is a kind of another flow chart of battery equalization method shown according to an exemplary embodiment.As shown in fig. 6,
This approach includes the following steps.As shown in fig. 6, this approach includes the following steps.
The control channel is connected to the acquisition module by step S61.
Step S62 acquires the parameter information of single battery in battery pack by the acquisition module.
Step S63 determines in the battery pack there is list according to the parameter information of the battery pack by the control module
Body battery needs to open balanced.
The control channel is connected to balance module corresponding to the single battery for needing to open equilibrium by step S64.
Step S65 controls the balance module by the control module and needs to open balanced single battery to described
It discharges.
Step S66, when the single battery in the battery pack does not need to carry out equilibrium treatment, by adopting for the single battery
Collection module is connect by the corresponding control channel with the control module.
Fig. 7 is a kind of another flow chart of battery equalization method shown according to an exemplary embodiment.As shown in fig. 7,
This approach includes the following steps.As shown in fig. 7, this approach includes the following steps.As shown in fig. 7, this approach includes the following steps.
The control channel is connected to the acquisition module by step S71.
Step S72 acquires the parameter information of single battery in battery pack by the acquisition module.
Step S73 determines in the battery pack there is list according to the parameter information of the battery pack by the control module
Body battery needs to open balanced.
The control channel is connected to balance module corresponding to the single battery for needing to open equilibrium by step S74.
Step S75 controls the balance module by the control module and needs to open balanced single battery to described
It charges.
Step S76, when the single battery in the battery pack does not need to carry out equilibrium treatment, by adopting for the single battery
Collection module is connect by the corresponding control channel with the control module.
About the battery equalization method in above-described embodiment, wherein the concrete mode of each step is in the related battery
Believe and be described in detail in the embodiment of equal balance system, no detailed explanation will be given here.
The disclosure additionally provides a kind of computer readable storage medium, is stored thereon with computer program instructions, the program
Instruction realizes above-mentioned battery equalization method when being executed by processor.
The preferred embodiment of the disclosure is described in detail in conjunction with attached drawing above, still, the disclosure is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the disclosure, a variety of letters can be carried out to the technical solution of the disclosure
Monotropic type, these simple variants belong to the protection scope of the disclosure.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, it can be combined in any appropriate way.In order to avoid unnecessary repetition, the disclosure to it is various can
No further explanation will be given for the combination of energy.
In addition, any combination can also be carried out between a variety of different embodiments of the disclosure, as long as it is without prejudice to originally
Disclosed thought equally should be considered as disclosure disclosure of that.
Claims (23)
1. a kind of battery equalization system, which is characterized in that including acquisition module, balance module and control module, the control mould
Block is selectively connect with the acquisition module and balance module for corresponding to same single battery by a control channel；
When the control module is connect with the acquisition module, the acquisition module is used to acquire the ginseng of single battery in battery pack
Number information；
When the control module is connect with the balance module, the balance module is used for the single battery in the battery pack
Carry out equilibrium treatment；
The control module is for determining in the battery pack there is list according to the parameter information of single battery in the battery pack
When body battery needs to open balanced, controls the balance module and the single battery for needing unlatching balanced is carried out at equilibrium
Reason.
2. battery equalization system according to claim 1, which is characterized in that the control module includes control chip, institute
It states control chip and is connect by a pin with the acquisition module and balance module for corresponding to same single battery, the pin is logical
The control channel is crossed to connect with the balance module and the acquisition module.
3. battery equalization system according to claim 1, which is characterized in that the battery equalization system is used for multiple monomers
Battery, the control module include control chip, and the multiple single battery controls the more of chip with described by multiple channels
A pin connects one to one.
4. battery equalization system according to claim 1, which is characterized in that the control module includes that setting is believed in battery
Cease the first control unit of collector and the second control unit of battery management controller be set, the first control unit and
Second control unit selectively carries out Balance route to the single battery for needing equilibrium.
5. battery equalization system according to claim 1, which is characterized in that the acquisition module includes Acquisition Circuit, institute
Stating balance module includes equalizing circuit, and the Acquisition Circuit and equalizing circuit of same single battery all pass through selection switch and the control
The connection of molding block, the selection switch are selectively connected the Acquisition Circuit or the equalizing circuit.
6. battery equalization system according to claim 1, which is characterized in that determine the battery pack in the control module
In single battery when not needing to carry out equilibrium, the acquisition module corresponding to the single battery passes through the corresponding control channel
It is connect with the control module；Alternatively, needing to carry out in the determining single battery with the battery pack of the control module equal
When weighing apparatus, the control module is connected to corresponding to the acquisition module of the single battery and balance module timesharing.
7. battery equalization system according to claim 1, which is characterized in that the control module is also used to according to by described
The needs that the parameter information of battery pack obtains open the target equilibrium duration and balanced duty ratio control of balanced single battery
It makes the balance module and equilibrium treatment is carried out to the single battery for needing unlatching balanced, the equilibrium duty ratio is described equal
Weighing apparatus module occupies the ratio between duration and the occupied total duration of the control channel of the control channel.
8. battery equalization system according to claim 7, which is characterized in that the control module is also used to according to the mesh
It marks balanced duration and the balanced duty ratio determines time for balance section and acquisition time section, the time for balance section and the acquisition
The sum of period is equal to the occupied total duration of the control channel；In the time for balance section, the control channel is connected to institute
Balance module is stated, so that the balance module carries out equilibrium treatment to the single battery in the battery pack；In the acquisition
Between section, the control channel is connected to the acquisition module, so that the acquisition module acquires the parameter information of the battery pack.
9. battery equalization system according to claim 7, which is characterized in that the control module is in the following manner
Obtain the target equilibrium duration for needing to open balanced single battery:
Whether according to the parameter information of the collected battery pack of the acquisition module, determining in the battery pack has monomer electric
Pond needs to open balanced；
When having single battery to need to open balanced in determining the battery pack, institute is calculated according to the parameter information of the battery pack
State the target equilibrium duration for needing to open balanced single battery.
10. battery equalization system according to claim 1, which is characterized in that the control channel is equipped with control switch；
When needing the parameter information of the acquisition module acquisition battery pack, the control module controls the control switch and is connected to institute
Acquisition module is stated, so that the control channel is connected to the acquisition module；When the needs equalizing circuit is in the battery pack
Single battery when carrying out equilibrium treatment, the control module controls the control switch and is connected to the balance module so that
The control channel is connected to the balance module.
11. battery equalization system according to claim 10, which is characterized in that the control switch is opened for single-pole double throw
It closes, the control module is connected to the moved end of the single-pole double-throw switch (SPDT), and the acquisition module is connected to the single-pole double throw and opens
The first non-moving end closed, the balance module are connected to the second non-moving end of the single-pole double-throw switch (SPDT).
12. battery equalization system according to claim 1, which is characterized in that the control module is also used in monomer electricity
When the difference of minimum voltage in cell voltage and each single battery is greater than predeterminated voltage difference threshold value, the balance module pair is controlled
The single battery discharges.
13. battery equalization system according to claim 1, which is characterized in that the control module is also used in monomer electricity
The difference of maximum voltage in the voltage in pond and each single battery controls the balance module when being greater than predeterminated voltage difference threshold value
It charges to the single battery.
14. battery equalization system according to claim 1, which is characterized in that the parameter information of the battery pack includes electricity
At least one of pressure value, SOC value, self-discharge rate, internal resistance of single cell value, current value, temperature value.
15. a kind of vehicle, which is characterized in that including battery equalization system described in any one of claim 1-14.
16. a kind of battery equalization method is applied to battery equalization system, which is characterized in that the battery equalization system includes control
Molding block, acquisition module and balance module；The control module is by a control channel and corresponds to same list in battery pack
The acquisition module of body battery is connected with balance module, control channel described in the acquisition module and the balance module time-sharing multiplex；It should
Method includes:
The control channel is connected to the acquisition module；
The parameter information of single battery in battery pack is acquired by the acquisition module；
Being determined in the battery pack by the control module according to the parameter information of the battery pack has single battery needs to open
Open equilibrium；
The control channel is connected to balance module corresponding to the single battery for needing to open equilibrium；
The balance module, which is controlled, by the control module needs to open balanced single battery progress equilibrium treatment to described.
17. according to the method for claim 16, which is characterized in that it is described by the control module according to the battery pack
Parameter information determine have in the battery pack single battery need to open it is balanced, comprising:
The single battery for needing to open equilibrium, institute are determined according to the parameter information of the battery pack by the control module
The target equilibrium duration for needing to open balanced single battery and balanced duty ratio are stated, the equilibrium duty ratio is the equilibrium model
Block occupies the ratio between duration and the occupied total duration of the control channel of the control channel；
It is described that the balance module is controlled to the single battery progress equilibrium for needing to open equilibrium by the control module
Processing, comprising:
The target equilibrium duration for opening balanced single battery and the equilibrium is needed to account for according to described by the control module
Sky needs to open balanced single battery progress equilibrium treatment to described than controlling the balance module.
18. according to the method for claim 17, which is characterized in that this method further include:
Time for balance section and acquisition are determined according to the target equilibrium duration and the balanced duty ratio by the control module
Period, the sum of the time for balance section and the acquisition time section are equal to the occupied total duration of the control channel；
It is described that the control channel is connected to the acquisition module, comprising:
In the acquisition time section, the control channel is connected to the acquisition module；
It is described that the control channel is connected to balance module corresponding to the single battery for needing to open equilibrium, comprising:
In the time for balance section, the control channel is connected to equilibrium model corresponding to the single battery for needing to open equilibrium
Block.
19. according to the method for claim 17, which is characterized in that the parameter information according to the battery pack determines institute
State the target equilibrium duration for needing to open balanced single battery, comprising:
Whether according to the parameter information of the collected battery pack, determining in the battery pack has single battery to need to open
Weighing apparatus；
When thering is single battery to need to open balanced in determining the battery pack, calculates the needs and open balanced single battery
Target equilibrium duration.
20. according to the method for claim 16, which is characterized in that when the single battery in the battery pack does not need to carry out
When equilibrium treatment, this method further include:
The acquisition module of the single battery is connect by the corresponding control channel with the control module.
21. according to the method for claim 16, which is characterized in that described to control the equilibrium model by the control module
Block needs to open balanced single battery progress equilibrium treatment to described, comprising:
Control the balance module by the control module needs the single battery for opening equilibrium to discharge to described.
22. according to the method for claim 16, which is characterized in that described to control the equilibrium model by the control module
Block needs to open balanced single battery progress equilibrium treatment to described, comprising:
Control the balance module by the control module needs the single battery for opening equilibrium to charge to described.
23. a kind of computer readable storage medium, is stored thereon with computer program instructions, which is characterized in that the program instruction
Battery equalization method described in any one of claim 16-22 is realized when being executed by processor.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710775028.6A CN110015173B (en) | 2017-08-31 | 2017-08-31 | Battery equalization system, vehicle, battery equalization method, and storage medium |
| PCT/CN2018/103685 WO2019042441A1 (en) | 2017-08-31 | 2018-08-31 | Battery balancing system, vehicle, battery balancing method, and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710775028.6A CN110015173B (en) | 2017-08-31 | 2017-08-31 | Battery equalization system, vehicle, battery equalization method, and storage medium |
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| CN110015173A true CN110015173A (en) | 2019-07-16 |
| CN110015173B CN110015173B (en) | 2024-01-30 |
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| WO (1) | WO2019042441A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117526513A (en) * | 2023-11-13 | 2024-02-06 | 无锡市晶源微电子股份有限公司 | Battery equalization circuit |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100680901B1 (en) * | 2006-02-28 | 2007-02-09 | 김금수 | A battery management system and method of controlling thereof |
| CN102496979A (en) * | 2011-11-28 | 2012-06-13 | 上海交通大学 | Lithium ion battery pack equalizing circuit with automatic polarity switch |
| CN103166257A (en) * | 2011-12-14 | 2013-06-19 | 比亚迪股份有限公司 | Battery pack voltage equalizing system and equalizing method |
| CN104079016A (en) * | 2013-03-28 | 2014-10-01 | 比亚迪股份有限公司 | Battery pack equalizing system and battery pack equalizing control method |
| US20150263633A1 (en) * | 2014-03-11 | 2015-09-17 | Toyota Jidosha Kabushiki Kaisha | Power conversion apparatus and method for starting up the same |
| CN106549454A (en) * | 2016-12-15 | 2017-03-29 | 深圳晶福源科技股份有限公司 | A kind of voltage sample and the conllinear battery management system of electric quantity balancing and management method |
| CN207241459U (en) * | 2017-08-31 | 2018-04-17 | 比亚迪股份有限公司 | Battery equalization system and vehicle |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003189490A (en) * | 2001-12-14 | 2003-07-04 | Honda Motor Co Ltd | Residual capacity equalizer of power storage unit |
| JP5012483B2 (en) * | 2007-12-18 | 2012-08-29 | パナソニック株式会社 | Power storage device |
| CN105711434B (en) * | 2016-02-04 | 2017-12-29 | 金龙联合汽车工业（苏州）有限公司 | A kind of electric automobile power battery management system |
-
2017
- 2017-08-31 CN CN201710775028.6A patent/CN110015173B/en active Active
-
2018
- 2018-08-31 WO PCT/CN2018/103685 patent/WO2019042441A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100680901B1 (en) * | 2006-02-28 | 2007-02-09 | 김금수 | A battery management system and method of controlling thereof |
| CN102496979A (en) * | 2011-11-28 | 2012-06-13 | 上海交通大学 | Lithium ion battery pack equalizing circuit with automatic polarity switch |
| CN103166257A (en) * | 2011-12-14 | 2013-06-19 | 比亚迪股份有限公司 | Battery pack voltage equalizing system and equalizing method |
| CN104079016A (en) * | 2013-03-28 | 2014-10-01 | 比亚迪股份有限公司 | Battery pack equalizing system and battery pack equalizing control method |
| US20150263633A1 (en) * | 2014-03-11 | 2015-09-17 | Toyota Jidosha Kabushiki Kaisha | Power conversion apparatus and method for starting up the same |
| CN106549454A (en) * | 2016-12-15 | 2017-03-29 | 深圳晶福源科技股份有限公司 | A kind of voltage sample and the conllinear battery management system of electric quantity balancing and management method |
| CN207241459U (en) * | 2017-08-31 | 2018-04-17 | 比亚迪股份有限公司 | Battery equalization system and vehicle |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117526513A (en) * | 2023-11-13 | 2024-02-06 | 无锡市晶源微电子股份有限公司 | Battery equalization circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019042441A1 (en) | 2019-03-07 |
| CN110015173B (en) | 2024-01-30 |
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