CN104079017B - A kind of cell managing device, power-supply system and battery balanced method - Google Patents
A kind of cell managing device, power-supply system and battery balanced method Download PDFInfo
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Abstract
The invention provides a kind of cell managing device, power-supply system and battery balanced method, cell managing device specifically includes that battery detecting module, for detecting the duty of each battery in this battery bag；Balance module, for this battery bag being charged with other battery bag or discharges according to the duty of described battery of detection, so that the energy coincidence of the battery in this battery bag and other battery bag；Several mode selection modules, each mode selection module is for connecting certain battery in battery bag to be charged or to discharge with other battery bag, and the quantity of mode selection module is identical with number of batteries in this battery bag；Main control module, for the work of the above-mentioned each module of working state control of the described battery according to detection and mutual with external information.Cell managing device, power-supply system and the method that the present invention provides effectively can carry out balancing energy and then the concordance improving power supply and life-span to battery bag.
Description
Technical field
The present invention relates to a kind of managing device, particularly relate to a kind of cell managing device, power-supply system and battery balanced method.
Background technology
The power supply that the equipment with power supply as kinetic energy such as electric motor car uses generally is formed by multiple battery bags (also referred to as set of cells), such as, the power supply formed by 5 Battery pack groups, wherein often group is formed by 24 batteries series connection in 4 groups, another group is in series by 18 batteries, altogether forms the power supply being in series by 114 batteries.When electric motor car works, described 114 batteries discharge simultaneously, and to provide the electric energy needed for electric motor car work, when electric motor car charges, these 114 batteries charge, with energy reserve simultaneously.But along with the use of electric motor car, these 114 batteries can engender charging and/or uneven situation of discharging.This will result directly in some battery and restarts to be in overcharge or cross and put state, thus reduces the service life of these batteries, and then the service life of 114 batteries is uneven.In set of cells, if there being any one battery to terminate the life-span in advance in 24 or 18 batteries in a group, then this Battery pack needs whole group of replacement, so that reducing the service life of whole Battery pack.
So, the energy that the battery bag that battery bag in prior art, especially secondary cell are formed there will be percentage of batteries is unbalanced so that affecting the situation of the use of overall power supply.But, along with the development of energy crisis, secondary cell has obtained increasingly being widely applied.Secondary cell such as lithium battery has many advantages, but it there are still some drawbacks.Such as, the performance complexity etc. of storage little energy, connection in series-parallel use, battery electric quantity calculation difficult to estimate, battery.So secondary cell typically requires battery management system (BMS, BATTERYMANAGEMENTSYSTEM) and supports the use, with preferably monitoring and management battery.BMS can be in battery charge and discharge process, the parameter such as the terminal voltage of every piece of battery in Real-time Collection set of cells and temperature, charging and discharging currents and battery bag total voltage, to prevent battery generation overcharge or to cross phenomenons such as putting.BMS can provide battery condition in time simultaneously, picks out problematic battery, to keep whole Battery pack reliability of operation and high efficiency.But, prior art lacks and the energy between battery bag can be equalized, to improve the battery management system in the service life of the power supply that battery bag is formed.
It is understood that the statement of this part only provides background information related to the present invention, may constitute or not constitute so-called prior art.
Summary of the invention
The technical problem to be solved is for the energy content of battery in battery bag in prior art unbalanced so that its life-span shorter defect, it is provided that a kind of can be with the cell managing device of the energy of each battery in the balancing battery bag of automatic quick.
The technical solution adopted for the present invention to solve the technical problems is to provide a kind of cell managing device, comprising: battery detecting module, for detecting the duty of each battery in this battery bag；Balance module, for this battery bag being charged with other battery bag or discharges according to the duty of described battery of detection, so that the energy coincidence of the battery in this battery bag and other battery bag；Several mode selection modules, each mode selection module is for connecting certain battery in battery bag to be charged or to discharge with other battery bag, and the quantity of mode selection module is identical with number of batteries in this battery bag；Main control module, for the work of the above-mentioned each module of working state control of the described battery according to detection and mutual with external information.
In above-mentioned cell managing device, described balance module includes:
DC/DC transducer, for the transfer of the energy between this battery bag and other battery bag；
Balance controller, receives the instruction of main control module and controls the work of DC/DC transducer according to the instruction of described main control module.
In above-mentioned cell managing device, described balance module also includes equilibrium state collecting unit, for gathering the duty of DC/DC transducer and the duty of DC/DC transducer being fed back to balance controller.
In above-mentioned cell managing device, each mode selection module includes diode parallel with one another and switch.
In above-mentioned cell managing device, described switch is relay.
In above-mentioned cell managing device, the duty of described battery includes the running voltage of battery, operating current and operating temperature.
In above-mentioned cell managing device, the duty of described battery includes the running voltage of battery, operating current and operating temperature.
In above-mentioned cell managing device, also including the display of duty for showing battery bag, described display electrically connects with described main control module.
In above-mentioned cell managing device, also including the display of duty for showing battery, described display electrically connects with described main control module.
In order to preferably solve above-mentioned technical problem, present invention also offers a kind of power-supply system, comprising: battery bags of several series connection, several are for managing cell managing devices of battery bag and for controlling the central controller of several cell managing devices described, each battery bag is electrically connected with central controller by bus after electrically connecting a cell managing device, and described cell managing device is any one in above-mentioned cell managing device.
In order to preferably solve above-mentioned technical problem, present invention also offers a kind of battery balanced method of power-supply system, it comprises the following steps successively:
S10, each cell managing device detect the electricity of each battery in connected battery bag and described electricity are fed back to central controller；
According to the electricity of each battery of feedback, S20, central controller judge that power-supply system is battery balanced the need of carrying out, the most then perform step S30, if it is not, then return step S10；
S30, central controller calculate the average electricity of all batteries according to the coulant meter of each battery of feedback and judge which battery needs equilibrium and each battery to reach the electricity Q needed for average electricity according to average electricity；
S40, central controller send equalization instruction to main control module in the cell managing device needing the battery bag place equalized, described main control module carries out equilibrium treatment according to needing the battery of equilibrium in the described equalization instruction battery bag to its place, the most described main control module makes the mode selection module needing the battery of equilibrium to be connect in the battery bag at its place connect with bus according to above-mentioned equalization instruction, and the balance module that main control module controls to be connected with this main control module according to above-mentioned equalization instruction to bus releasing electricity Q or absorbs electricity Q at bus.
In above-mentioned battery balanced method, when carrying out equilibrium treatment in step s 40, also include gathering running voltage, operating current and working time during charge or discharge in described balance module, and, described balance module regulates the mode of its charge or discharge according to the described running voltage, operating current and the working time that gather.
In above-mentioned battery balanced method, when carrying out equilibrium treatment in step s 40, also include the duty showing each battery.
The cell managing device that the present invention provides mainly detects the duty of each battery by battery detecting module, and pass through balance module and mode selection module under the control of main control module, can the most effectively make this battery bag mutually be charged with other battery bag or discharge, and then realize the equilibrium of energy between battery bag.And concordance and the service life of the overall power supply that battery bag is formed can be improved.
Accompanying drawing explanation
Fig. 1 is the structural representation that the cell managing device that the present invention provides is connected with battery bag；
Fig. 2 is the structural representation of the balance module that the present invention provides；
Fig. 3 is the structural representation of mode selection module in the embodiment that the present invention provides；
Fig. 4 is the theory diagram that in the embodiment that the present invention provides, power-supply system is applied to load；
Fig. 5 is the flow chart of balancing battery in the embodiment that the present invention provides；
Fig. 6 a to Fig. 6 c is that in the embodiment that the present invention provides, the energy content of battery flows to schematic diagram.
Detailed description of the invention
In order to make technical problem solved by the invention, technical scheme and beneficial effect clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
In describing the invention, it will be appreciated that, term " longitudinally ", " laterally ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end " " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, rather than instruction or hint indication device or element must have specific orientation, with specific azimuth configuration and operation, be therefore not considered as limiting the invention.
The cell managing device that the present invention provides, it mainly can make to realize balancing energy between battery bag by balance module, several mode selection modules and main control module.
Seeing shown in Fig. 1 to Fig. 6, the invention provides a kind of cell managing device, it is mainly used in managing battery bag.Cell managing device specifically includes that battery detecting module 1, balance module 4, several mode selection modules 3 and main control module 2.Wherein, battery detecting module 1 is connected with battery bag, for the duty of each battery in the battery bag that detection is connected with cell managing device, such as, detects the running parameters such as the running voltage of battery, operating current and operating temperature.The battery bag (i.e. this battery bag) being connected with cell managing device is charged with other battery bag or discharges under the control of main control module 2 by balance module 4, so that carrying out energy transfer between battery bag and making the balancing energy of each battery in battery bag consistent.The corresponding mode selection module 3 of each battery in battery bag, therefore the quantity of mode selection module 3 is identical with number of batteries in this battery bag.Under the control of main control module 2, mode selection module 3 selects whether certain battery is connected with other battery bag, after certain battery is connected by mode selection module 3 with other battery bag, certain described battery can be charged by balance module 4 with other described battery bag or discharge.Main control module 2 is the work of modules in the working state control cell managing device of the described battery according to detection.So, after main control module 2 is connected according to the working state control mode selection module 3 of each battery, main control module 2 controls balance module 4 again makes to carry out between several battery bags transfer and the equilibrium of internal cell energy.
In a preferred embodiment of the invention, balance module 4 includes DC/DC transducer 41, for the transfer of the energy between this battery bag and other battery bag；Balance controller 42, receives the instruction of main control module 2 and controls the work of DC/DC transducer according to the instruction of described main control module 2.After connecting between certain battery and other battery bag due to mode selection module 3, can not directly be electrically connected discharge and recharge between battery and battery, so balance module 4 makes to carry out between battery the transfer of energy by DC/DC transducer.Concrete, DC/DC transducer 41 mainly realizes the isolation between voltage conversion and battery to realize the transfer of energy between battery.DC/DC transducer is well known to those skilled in the art, therefore its concrete structure does not repeats them here.Balance controller 42 controls the conversion regime of DC/DC transducer under the control of main control module 2, such as, controls its boosting or blood pressure lowering, and boosts or the time of blood pressure lowering.
Owing to parts each in cell managing device are inevitably by external influence, such as, the running parameter of DC/DC transducer self changes as well as interference such as its aging or extraneous electromagnetism.It is preferable that balance module 4 also includes equilibrium state collecting unit 43, for gathering the duty of DC/DC transducer and the duty of DC/DC transducer being fed back to balance controller 42.So, balance controller 42 combines the working method of the in good time adjustment DC/DC transducer of the duty of the instruction of main control module 2 and the DC/DC transducer of feedback.Such as, after equilibrium state collecting unit 43 gathers the work state informations such as the running voltage of DC/DC transducer, operating current and working time, the running voltage during boosting of balance controller 42 adaptive change DC/DC transducer and pressure rising time, and then change the mode of discharge and recharge between the battery at DC/DC transducer two ends.As such, it is possible to make to carry out more quickly and accurately between battery energy transfer and equilibrium.
In a preferred embodiment of the invention, each mode selection module 3 includes diode parallel with one another and switch.So, after certain battery described is connected with other battery bag, multiple power supply can be avoided mutually to there is backflow.Such as, when certain energy content of battery is higher, main control module 2 makes diode current flow in mode selection module 3, then described certain battery (i.e. other battery bag) to external world electric discharge, when certain energy content of battery is on the low side, main control module 2 makes mode selection module 3 breaker in middle close (diode needs to reach its threshold voltage and could turn on), now, diode is in cut-off state, and described in outer bound pair, certain battery is charged.So, mode selection module 3 diode in parallel and switch make connected battery be charged respectively by two different branch roads and be discharged, and can effectively reduce backflow and negative effect that mixed flow is brought.Described switch is usually automatically controlled, and it can be relay or metal-oxide-semiconductor or IGBT pipe.Preferably, switching as relay, its cost is relatively low, and lasts a long time.It is further preferred that cell managing device also includes that the display of the duty for showing battery bag, display electrically connect with described main control module 2.Display can be understood the working condition of each battery at any time by showing with the duty of each battery in battery bag, and then can safeguard in time for user.
The cell managing device that the present invention provides can be widely used on the various battery needing management, such as lithium battery.Present invention also offers a kind of power-supply system, comprising: battery bags of several series connection, several are for managing cell managing devices of battery bag and for controlling the central controller of several cell managing devices described, each battery bag is electrically connected with central controller by bus after electrically connecting a cell managing device, described cell managing device be in above-mentioned cell managing device any one.The present invention provide power-supply system its by each one cell managing device of battery bag corresponding configuration, and pass through each cell managing device of central controller management coordination.
Referring again to shown in Fig. 4 to Fig. 6, present invention also offers a kind of battery balanced method of power-supply system, it mainly comprises the steps that
S10, each cell managing device detect the electricity of each battery in connected battery bag and described electricity are fed back to central controller；Cell managing device is used for managing connected battery bag, battery detecting module in cell managing device detects the duty of each battery in connected battery bag for a long time, for balancing battery, each cell managing device detects the electricity of each battery in connected battery bag and electricity is fed back to central controller.
According to the electricity of each battery of feedback, S20, central controller judge that power-supply system is battery balanced the need of carrying out, the most then perform step S30, if it is not, then return step S10；Wherein, if in battery bag, the energy of battery is inconsistent in power-supply system, then central controller is judged as needing battery is carried out balancing energy；
S30, central controller calculate the average electricity of all batteries according to the coulant meter of each battery of feedback and judge which battery needs equilibrium and each battery to reach the electricity Q needed for average electricity according to average electricity；Concrete, central controller calculates the average electricity of current all batteries, the most all batteries of average electricity reach the required electricity having during equilibrium, according to average electricity, central controller can judge which battery is not reaching to average electricity i.e. which battery and needs equilibrium, and the battery that need to equalize can be calculated reach the electricity Q needed for average electricity, the too high battery of electricity needs to discharge electricity, and the too low battery of electricity needs to absorb electricity.
S40, central controller send equalization instruction to main control module in the cell managing device that the battery bag needing equilibrium is connected, main control module carries out equilibrium treatment according to equalization instruction to the battery needing equilibrium in its battery bag connected, and central controller is assigned to instruct to be needed to which battery in battery bag to equalize and need change how many electricity and change the mode of electricity to main control module.The mode selection module that main control module makes the battery needing equilibrium in its battery bag connected be connect according to equalization instruction is connected with bus, and the balance module that main control module controls to be connected with this main control module according to above-mentioned equalization instruction to bus releasing electricity Q or absorbs electricity Q at bus.Main control module can control several mode selection modules and in turn switch on bus or turn-on bus together, and bus is the most first discharged by battery bag, absorbs electricity (being i.e. charged other battery bag) at other battery Bao Zaicong bus.Or, bus is discharged simultaneously and absorbed at bus in electricity, i.e. battery by battery bag needs the electricity of equilibrium to be pooled at bus the battery being reassigned to need charging.
Between battery bag, the mode of energy transfer has multiple.The present invention is mainly by judging the Jun Heng energy of needs and carrying out the transfer of energy between battery bag and battery bag between battery bag with battery bag.What deserves to be explained is, judge whether the energy of battery equalizes, can be realized by the voltage or other parameter that judge battery, but, by the electricity on battery is the most identical, this area generally judges whether the energy content of battery equalizes, and, draw by calculating is the most convertible between the parameter such as electricity, voltage.Additionally, although the electricity on battery can change along with the change of working time, but on each battery, the variable quantity of electricity is consistent in the short time, so, by calculate each battery of a certain moment and the difference of average electricity (and each battery reach average electricity needed for electricity Q) can be accurately by each battery balanced situation consistent to electricity.Preferably, when carrying out equilibrium treatment in step s 40, also including gathering running voltage, operating current and working time during charge or discharge in described balance module, balance module regulates the mode of self charge or discharge according to the instruction of described running voltage, operating current and the working time gathered and central controller.Such as, after in cell managing device, equilibrium state collecting unit gathers the work state informations such as the running voltage of DC/DC transducer, operating current and working time, the running voltage during boosting of balance controller adaptive change DC/DC transducer and pressure rising time, and then change the mode of discharge and recharge between the battery at DC/DC transducer two ends.As such, it is possible to make to carry out more quickly and accurately between battery energy transfer and equilibrium.More preferably, when carrying out equilibrium treatment in step s 40, also include the duty of each battery being shown by display, such as in the cell managing device electricity of each battery, temperature, charging/discharging voltage, this battery connected, the job information such as the running voltage of DC/DC transducer, working time, operating temperature shows, and then is more beneficial for user and understands power conditions and safeguard in time.
Refer again to Fig. 3 be described as follows to embodiment illustrated in fig. 5, the power-supply system and the equalization methods thereof that the present invention are provided in conjunction with Fig. 3 to embodiment illustrated in fig. 5:
In this embodiment, each battery bag connects a cell managing device (i.e. BMU) and is connected with bus afterwards, and bus connects central controller, such as this power-supply system and includes three battery bags connected.Each battery bag includes four batteries connected (battery in battery bag can be serial or parallel connection or both mixing), and each cell managing device includes four mode selection modules, a battery detecting module, a balance module and a main control module.Each balance module includes a DC/DC transducer, be connected between DC/DC transducer and main control module balance controller, the equilibrium state collecting unit being connected between DC/DC transducer and balance controller.Each mode selection module one end connects a battery, and its other end connects DC/DC transducer in balance module, and so that this battery to be carried out the transfer of energy by DC/DC transducer, and mode selection module electrically connects main control module to be controlled by main control module simultaneously.
The duty (including the electricity on each battery) of each battery send duty to central controller (i.e. BECU, BECU can be additionally used in power-supply system and upper level to carry out information mutual) by bus in the battery detecting module battery bag that electrically connects with this BMU of detection in each BMU.Such as, BECU calculates and judges in the first battery bag that subfam. Spiraeoideae-20 coulombs (i.e. this battery needs to discharge 20 coulombs) gone back by 100 coulombs from average electricity of first battery, in second battery bag, subfam. Spiraeoideae 10 coulombs (i.e. this battery needs to absorb electricity 10 coulombs) gone back by 100 coulombs from average electricity of second battery, in second battery bag, subfam. Spiraeoideae 10 coulombs gone back by 100 coulombs from average electricity of the 3rd battery, and the 3rd battery bag is in average electricity 100 coulombs (being i.e. not required to battery to be equalized).Therefore, BECU assigns to instruct and carries out battery balanced to the BMU of first battery bag and second battery bag.The BMU that first battery bag connects controls, according to instruction, the mode selection module connection that its first interior battery is connect, such as make diode current flow in mode selection module (and switch and be off), then this battery the most i.e. carries out energy transfer to bus, and in balance module, balance controller carries out electricity transfer according to instruction control DC/DC transducer within 10S to this battery, i.e. makes this battery discharge to bus within 10S by DC/DC transducer.And, the BMU that second battery bag connects controls second battery and the 3rd mode selection module that battery is connect in the second battery bag under the instruction of BECU and connects, the switch in mode selection module is such as made to close (now diode is in cut-off state), then in bus, second battery in the second battery bag and the 3rd battery are charged by the electric energy by the first battery bag release of accumulation, so that absorbing the electricity of 10 coulombs in the second battery bag in second battery and each comfortable 10S of the 3rd battery.Therefore, the energy coincidence of battery in three battery bags after 10S, it is achieved thereby that the equilibrium of the energy of all of battery.Wherein, two-way DC transducer is the power section of balance module, it is achieved the charge and discharge maintenance to battery.The input and output voltage of equilibrium state collecting unit monitoring bidirectional DC transducer and electric current, to provide the data of system equalization strategy, and then balance controller can realize two-way DC transducer mode of operation is switched the requirement with adaptive system, such as, can control conversion speed, direction and the power of two-way DC transducer.And, the mode selection module parallel connection (even if switch and diode be connected between battery and DC/DC transducer by two different branch roads) by switch and diode so that the charging and discharging between battery is by different branch road realizations and can prevent the mutual backflow of battery.
Cell managing device controls battery balanced strategy and is commonly divided into multiple situation according to the situation of battery with two side terminals, such as shown in Fig. 6 a, 6b, 6c, arrow upwards represents that this battery can outwards export energy as power supply, arrow represents that downwards battery can absorb as load absorption energy and the energy differences that exports can be used to balancing battery.Need not balancing battery when being under Fig. 6 c state, the most just need not there is such energy differences, what battery can serve as power safety outwards exports energy.In Fig. 6 a, a small amount of battery capacity is higher, can improve by these higher batteries are given the electric discharge of other battery bag realize concordance, have a small amount of battery capacity on the low side, by other battery bag, the charging of these batteries is realized concordance in Fig. 6 b.Make all batteries can reach concordance when Fig. 6 a and two kinds of situations of Fig. 6 b occurs in percentage of batteries bag by the control and regulation of balance module, just reach battery balanced requirement when coherency state during battery reaches Fig. 6 c.
The power-supply system that the present invention provides can be widely used in the various equipment needing electric supply installation, such as, with in the various equipment such as electrical network and the energy-storage system of distribution box, electric motor car.In a word, cell managing device, power-supply system and battery balanced method thereof that the present invention provides can effectively manage battery bag, make phase cross energy transfer between several battery bags, and then realize the balancing energy of several battery bags, and then improve the concordance of whole power supply and the service life that battery bag is formed, and it is easy to battery bag is safeguarded.And, it can the most quickly realize battery balanced, simultaneously, it is simple to user understands power supply state in which and is easy to user and safeguards battery in time.
In the description of this specification, the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means that the specific features, structure, material or the feature that combine this embodiment or example description are contained at least one embodiment or the example of the present invention.In this manual, the schematic representation to above-mentioned term is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or feature can combine in any one or more embodiments or example in an appropriate manner.
In describing the invention, unless otherwise prescribed and limit, it should be noted that term " is installed ", " being connected ", " connection " should be interpreted broadly, such as, can be to be mechanically connected or electrical connection, can also be the connection of two element internals, can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, for the ordinary skill in the art, the concrete meaning of above-mentioned term can be understood as the case may be.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all any amendment, equivalent and improvement etc. made within the spirit and principles in the present invention, should be included within the scope of the present invention.
Claims (10)
1. the battery balanced method of a power-supply system, it is characterised in that
Described power-supply system includes: battery bags of several series connection, several are for managing cell managing devices of battery bag and for controlling the central controller of several cell managing devices described, each battery bag is electrically connected with central controller by bus after electrically connecting a cell managing device
Described cell managing device includes:
Battery detecting module, for detecting the duty of each battery in this battery bag；
Balance module, for this battery bag being charged with other battery bag or discharges according to the duty of described battery of detection, so that the energy coincidence of the battery in this battery bag and other battery bag；
Several mode selection modules, each mode selection module is for connecting certain battery in battery bag to be charged or to discharge with other battery bag, and the quantity of mode selection module is identical with number of batteries in this battery bag；And
Main control module, for the work of the above-mentioned each module of working state control of the described battery according to detection and mutual with external information,
The battery balanced method of described power-supply system comprises the following steps:
S10, each cell managing device detect the electricity of each battery in connected battery bag and described electricity are fed back to central controller；
According to the electricity of each battery of feedback, S20, central controller judge that power-supply system the need of carrying out battery balanced process, the most then performs step S30, if it is not, then return step S10；
S30, central controller calculate the average electricity of all batteries according to the coulant meter of each battery of feedback and judge which battery needs equilibrium and each battery to reach the electricity Q needed for average electricity according to average electricity；
S40, central controller send equalization instruction to main control module in the cell managing device that the battery bag needing equilibrium is connected, the mode selection module that described main control module makes the battery needing equilibrium in its battery bag connected be connect according to above-mentioned equalization instruction is connected with bus, and the balance module that main control module controls to be connected with this main control module according to above-mentioned equalization instruction to bus releasing electricity Q or absorbs electricity Q at bus.
The most battery balanced method, it is characterised in that described balance module includes:
DC/DC transducer, for the transfer of the energy between this battery bag and other battery bag；And
Balance controller, receives the instruction of main control module and controls the work of DC/DC transducer according to the instruction of described main control module.
The most battery balanced method, it is characterised in that described balance module also includes equilibrium state collecting unit, for gathering the duty of DC/DC transducer and the duty of DC/DC transducer being fed back to balance controller.
The most battery balanced method, it is characterised in that each mode selection module includes diode parallel with one another and switch.
The most battery balanced method, it is characterised in that described switch is relay.
The most battery balanced method, it is characterised in that the duty of described battery includes the running voltage of battery, operating current and operating temperature.
The most battery balanced method, it is characterised in that the duty of described DC/DC transducer includes the running voltage of DC/DC transducer, operating current and working time.
The most battery balanced method, it is characterised in that also including the display of duty for showing battery, described display electrically connects with described main control module.
The most battery balanced method, it is characterized in that, when carrying out equilibrium treatment in step s 40, also include gathering running voltage, operating current and working time during charge or discharge in described balance module, and described balance module regulates the mode of its charge or discharge according to the described running voltage, operating current and the working time that gather.
The most battery balanced method, it is characterised in that when carrying out equilibrium treatment in step s 40, also includes the duty showing each battery.
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| CN109435778B (en) * | 2017-08-31 | 2022-03-18 | 比亚迪股份有限公司 | Battery equalization method, system, vehicle, storage medium and electronic device |
| CN109435776B (en) * | 2017-08-31 | 2021-02-23 | 比亚迪股份有限公司 | Battery information collector, battery equalization system, vehicle, method and storage medium |
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