CN202633993U - Automatic battery pack charging-discharging management device - Google Patents

Automatic battery pack charging-discharging management device Download PDF

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CN202633993U
CN202633993U CN 201220208594 CN201220208594U CN202633993U CN 202633993 U CN202633993 U CN 202633993U CN 201220208594 CN201220208594 CN 201220208594 CN 201220208594 U CN201220208594 U CN 201220208594U CN 202633993 U CN202633993 U CN 202633993U
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battery
cell
switch
microprocessor
charge
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杨湘武
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杨湘武
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Abstract

The utility model relates to an automatic battery pack charging-discharging management device. A battery pack consists of a plurality of single batteries in serial connection, wherein at least one single battery is backed up in the battery pack, each single battery including the backup single battery is independently connected with an auxiliary controller, and all auxiliary controllers are connected with one another through signals; and the working method of the device comprises the steps of a, calculating a charging capacity and a discharging capacity of each single battery; b, sequentially connecting the single batteries with sufficient quantity in serial to form a discharging battery pack according to the increasing sequence of the discharging capacity, and adopting the residual single batteries as backup; and c, utilizing the backup single batteries to substitute the single batteries which are completely discharged so as to discharge. The automatic battery pack charging-discharging management device and the working method thereof have beneficial effects that the reliability of the entire system can be improved, the resource can be saved, and the environment pollution can be reduced.

Description

The battery set charge/discharge automatic management device
Technical field
The utility model belongs to battery applications and control technology field, particularly a kind of battery set charge/discharge automatic management device.
Background technology
Present electric automobile, photovoltaic inversion system etc. are all at a large amount of series batteries of being made up of various storage batterys that use.A large amount of technical literatures shows both at home and abroad, and often there is the problem that useful life is short, discharge capacity is not enough, reliability is low in batteries in using.The maximum reason that influences battery pack useful life is to overcharge and overdischarge; The reason that causes the battery power discharge off-capacity is the indivedual ropy battery in the battery pack,
Reliability is low to be because in the high-rate battery discharge process, and the disconnected lattice open circuit of individual cell causes discharge failure, even can cause battery explosion.
In the prior art, the general employing adopted constant voltage charge to whole battery group, confirms the output voltage values of charger according to the float charge voltage of series connection batteries when 25 ° of C.This is in the problem of less than nothing big of new battery stage, but after through half a year or shorter time, particularly wherein has single lattice of an above battery to occur after the short circuit; More aggravated the overcharging of other normal battery, the battery dehydration that makes, capacity descends; Internal resistance increases, the positive plate corrosion.The maintenance-free battery of therefore theoretical life-span 15-20, when series connection was used, whole battery group had only the life-span of 2-3.And because the regulation that traditional new used batteries can not be used with has caused a large amount of completely written-off batteries that do not have to become rubbish.Not only wasted resource, gone back environmental pollution and brought huge pressure.Except the problem that can not make the best use of everything, also having a bigger problem is reliability, and in the application of ups power, reliability is particularly important, catastrophic failure during owing to battery discharge, and accidents such as the machine room that causes blast, loss of data usually are shown in space in a newspaper.
Management of charging and discharging technology about batteries has application number: 201110328521.6, and proprietary term: the patent of " monomer booster battery group method of work and cell batteries boost into group controller "; The technical scheme that this patent adopts is: the single battery charge independence; Independent inversion boosting to higher voltage value, is distinguished the current limliting pressure regulation with the first inversion boosting respectively of the voltage of many single batteries again; Electric energy is charged into same super capacitor, by the electricity consumption of super capacitor supply equipment.This patent has solved the charging and discharging of accumulator equalization problem, energy-saving and environmental protection, safe and reliable, will bring huge benefit to society aspect removing a hidden danger, but 5 places that can improve are still arranged: 1. system complex and cost are high; 2. the process that twice Power Conversion arranged in the discharge link is independently to boost for the first time, is the current limliting pressure regulation for the second time, and efficient is reduced; 3. the super capacitor price is high, has the contradiction of reliability and cost during high-power applications; 4. the circuit start time is long; 5. the load current impact of burst can cause voltage falling; 6. system's component parts is too many, is difficult for being used for transforming existing device.
Summary of the invention
Be technical deficiency more than solving, the utility model provides that a kind of cost is low, reliability is high, can fix a breakdown and support the battery set charge/discharge automatic management device that new used batteries are used with automatically.
The utility model is realized through following measure
A kind of battery set charge/discharge automatic management device of the utility model; Battery pack is in series by some cells; Backup has at least one cell in the said battery pack; Each cell that comprises the cell of backup all is singly connected with a sub-controller, and all sub-controller signals connect;
Said sub-controller comprises the microprocessor I; Said microprocessor I is connected with memory, communication module, charging module, voltage detection module, temperature sensor, charge/discharge capacity detection module and battery switching device, and said battery switching device is used for through the circuit switching cell of backup being carried out mutual alternative with the cell that just in use voltage is lower than set point.
Above-mentioned all sub-controllers are connected with a master controller jointly, and said master controller comprises the microprocessor II, and said microprocessor II is connected with communication module, display and keyboard.
Above-mentioned battery switching device comprises the switching circuit; Said switching circuit comprises a common port, and said common port is connected with two branch roads that are in parallel, the positive pole of order body battery behind branch road tandem tap K1; The negative pole of order body battery behind another branch road tandem tap K2; Cell through two adjacent cells of front and back the mode that links to each other with common port of positive pole connect successively, the public termination load negative pole of the first cell, the positive pole of position, end cell connects the load positive pole; Said K switch 1 is connected with the switch driver that is used to drive its switching with K switch 2, and said switch driver connects the microprocessor I; K switch 2 closures in the switching circuit on the cell in the use, K switch 1 is broken off; K switch 1 closure in the switching circuit on the subsequent use cell, K switch 2 is broken off.
The microprocessor I of above-mentioned sub-controller also is connected with abnormal protection module, parallel current-sharing module, LED battery status indicator light, program upgrade interface and adjustment control module.
The microprocessor II of above-mentioned master controller also is connected with sound and light alarm module and program upgrade interface.
The beneficial effect of the utility model is:
1. the reliability that can make whole system improves several times in theory than product in the past; Can never generation systems the situation of paralysis suddenly; If be applied on the electric automobile; Can solve because the unexpected stagnation of movement problem that fail battery brings is particularly suitable for being applied on UPS (EPS) power supply of departments such as important space flight, national defence, scientific research, medical treatment, communication, finance; 2. support new used batteries to use with and the automatic fault reparation; Needn't just repair once by battery of every evil idea, can treat to repair again after more fail battery withdraws from, change real fail battery during maintenance; Again organize into groups parallel connection to the battery that falls behind by the degree difference; Can under the prerequisite that does not influence normal use, reduce maintenance frequency like this, can reduce cost after sale, can reduce the cost of use for the user for automobile factory; 3. because the new used batteries of system's support are used with, used batteries can not influence new battery, can be identical performance; The different old storage battery parallel connection of capacity is that a cell group continues to use; Directly use the lifetime limitation of each battery, saved resource, reduced environmental pollution.
Description of drawings
Fig. 1 is the utility model general structure sketch map.
Fig. 2 is the syndeton block diagram of master controller and sub-controller in the utility model.
Fig. 3 is the internal structure block diagram of master controller and sub-controller in the utility model.
Embodiment
Embodiment 1: the battery set charge/discharge automatic management device of the utility model, and battery pack is in series by some cells, and backup has at least one cell in the battery pack, adopts the multiple redundancy backup, and all cells all are identical.Each cell that comprises the cell of backup all is singly connected with a sub-controller A, and all sub-controller signals connect.Memory among the sub-controller A writes by assembled battery total voltage divided by " storage battery input number " that cell batteries voltage obtains in advance, also will write the storage battery number of redundancy backup.Can carry out the communication of signal between the sub-controller.By each sub-controller affiliated cell is carried out Charge Management separately; Inversion boosting link and current limliting pressure regulation link have been cancelled in the cell series connection discharge of boosting, and have cancelled power conversion process twice; Improved efficient; Cancelled super capacitor, no rapid wear device simplifies the structure, has reduced cost, improved overload capacity.Each cell batteries in the batteries adopts the method that independently discharges and recharges, and makes to discharge and recharge equilibrium more.
Sub-controller comprises the microprocessor I, and the microprocessor I is connected with memory, charging module, voltage detection module, temperature sensor, charge/discharge capacity detection module, battery switching device, LED battery status indicator light, abnormal protection module, parallel current-sharing module, program upgrade interface and adjustment control module.The charging module function class is carried out Charge Management like the charge management circuit plate in the mobile phone lithium ion battery to battery.Voltage detection module, temperature sensor and charge/discharge capacity detection module detect voltage, temperature and the charge/discharge capacity of battery respectively.LED battery status indicator light plays indicative function when cell charges electricity.The abnormal protection module is used for overtemperature and overload protection, the sharing control when the parallel current-sharing module is used to expand capacity, and the program upgrade interface is used for the program upgrade in the microprocessor I.The adjustment control module is used for too high or cross the temperature-adjusting device work that control is attached thereto when low when the temperature of cell.The battery switching device is used for through the circuit switching cell of backup being carried out mutual alternative with the cell that just in use voltage is lower than set point.Communication module can adopt the CAN communication module, and sub-controller connects through the CAN bus.
Specifically: the battery switching device comprises the switching circuit; The switching circuit comprises a common port COM, and common port is connected with two branch roads that are in parallel, the positive pole of order body battery behind branch road tandem tap K1; The negative pole of order body battery behind another branch road tandem tap K2; Cell through two adjacent cells of front and back the mode that links to each other with common port of positive pole connect successively, the public termination load negative pole of the first cell, the positive pole of position, end cell connects the load positive pole; K switch 1 is connected with the switch driver that is used to drive its switching with K switch 2, and switch driver connects the microprocessor I; K switch 2 closures in the switching circuit on the cell in the use, K switch 1 is broken off; K switch 1 closure in the switching circuit on the subsequent use cell, K switch 2 is broken off.Above-mentioned K switch 1 adopts electronic switch with K switch 2; Comprise VMOS, IGBT, IGCT, photo thyristor, gate level turn-off thyristor, power GTR, static switch, solid-state relay; Relay, contactor or a few items wherein combine, and also can be independent mechanical switchs.Look Cost And Performance different selections can be arranged.
The method of work of battery set charge/discharge automatic management device may further comprise the steps:
Real-time voltage when a. each sub-controller writes down its cell that links to each other respectively and discharges and recharges fully, discharge and recharge time, charging and discharging currents and temperature, calculate the charge/discharge capacity of cell;
B. all cells are sorted according to charging capacity and discharge capacity size and store, form the battery pack of discharge according to connect the successively cell of enough numbers of discharge capacity order from big to small, the residual monomers battery is as subsequent use; More reliable according to the discharge capacity value ordering, because possibly adopt used batteries, can diagnose out the excessive battery inferior of self discharge like this.
If the magnitude of voltage that sub-controller detects the cell that is using when c. discharging is lower than set point; Judge that then this cell discharges fully; The sub-controller cell of discharge fully cuts out battery pack as subsequent use; Needs according to assembled battery total voltage; Simultaneously the subsequent use cell input battery pack of corresponding number is discharged, the cell that just subsequent use cell replacement is discharged fully discharges, and replacement each time all is that big or small ordering preferentially drops into the big subsequent use cell of discharge capacity according to discharge capacity.
In step a; The microprocessor I is according to the battery charging and discharging tables of data of the corresponding relation of the reflection charging and discharging currents value of storing in temperature value that records and the memory and ambient temperature and voltage; Detect battery tension in real time and revise charging current; When monomer battery voltage was elevated in the tables of data assigned voltage gradually with the charging interval, the microprocessor I judged that charging accomplishes the LED battery status indicator light of some bright green, charge closing output; And, calculate this charging capacity according to the time value and the current value in each stage.Because the protection charging voltage after the abundance is revised with reference to ambient temperature at any time, the electric weight that charges into just is used for compensating the self discharge electric weight of storage battery, has so just guaranteed the phenomenon that can not overcharge.
In step c, the discharge 70% time point glassy yellow LED light that measures to be checked.The operation/cutting method of battery switching device is: the microprocessor I of certain sub-controller drives the switch K switch 2 that connects on the cell of discharge fully through switch driver and breaks off; K switch 1 closure; The microprocessor I of another sub-controller drives K switch 1 disconnection that links to each other on the subsequent use cell, K switch 2 closures through switch driver simultaneously.Owing to adopted high speed microprocessor and electronic switch; Whole replacement process can be accomplished in 1 millisecond of less than, and the filter capacitor of the power-supply system of most of electronic circuits is held time and can be reached more than 50 milliseconds, and compole is short during replacement; It is seamless switching; Both adopt big current balance compensation, adopted quick substitute mode again, solved the overdischarge discharge and the integrity problem of storage battery.Can support new used batteries to use with, just can each storage battery all use really scrap till, reach the purpose that reduces the storage battery learies.
Embodiment 2: master controller of the common connection of all sub-controllers, master controller comprises and each microprocessor I signal microprocessor linked II that the microprocessor II is connected with display, keyboard, sound and light alarm module and program upgrade interface.Display also has the historical record query function, writes down each charging and discharging of accumulator data and date in the whole maintenance period.Keyboard is used for parameter setting.The sound and light alarm module is used for when battery pack is under-voltage, reporting to the police.The program upgrade interface is used for the program upgrade in the microprocessor II.
Master controller gathers the information of all sub-controllers; And show through display, carry out the setting of parameter through keyboard, when all backup cells use up; Master controller sends the sound and light alarm signal, shows that whole battery group has got into under-voltage discharge condition.
Embodiment 3: the utility model can also be formed the battery pile management system, and on the basis of the foregoing description 2, a plurality of series batteries by such are formed in parallel.Be fit to large-scale wind light mutual complementing power generation factory.
Store voltage and the parameter table of comparisons of temperature of the cell of multiple model in the master controller, confirm to set minimum voltage value according to the table of comparisons.Master controller is extrapolated the distance that can accomplish according to the remaining electric weight of battery pack, and is presented on the display screen.For people's trip is provided convenience.
Miniaturization, modular construction, can directly embed existing in equipment, (as: UPS, EPS power supply; And the electric power direct current operative power source, photovoltaic inversion system or the like) dilatation flexibly, recycling; Reduce the generation of electronic waste, energy-saving and emission-reduction meet the requirement of recycling economy.If be applied to UPS (EPS) power supply, can open automatic maintenance function, the user can set regularly discharge date and cycle period.
The foregoing description is said to be in order to specify this patent; Though describe through specific term in the literary composition; But can not limit the protection range of this patent with this; The personage who is familiar with this technical field can change or revise it after the spirit of understanding this patent and principle and reach equivalent purpose, and this equivalence change and modification all should be covered by the claim scope and define in the category.

Claims (5)

1. battery set charge/discharge automatic management device; Battery pack is in series by some cells; It is characterized in that: backup has at least one cell in the said battery pack; Each cell that comprises the cell of backup all is singly connected with a sub-controller, and all sub-controller signals connect;
Said sub-controller comprises the microprocessor I; Said microprocessor I is connected with memory, communication module, charging module, voltage detection module, temperature sensor, charge/discharge capacity detection module and battery switching device, and said battery switching device is used for through the circuit switching cell of backup being carried out mutual alternative with the cell that just in use voltage is lower than set point.
2. battery set charge/discharge automatic management device according to claim 1; It is characterized in that: all sub-controllers are connected with a master controller jointly; Said master controller comprises the microprocessor II, and said microprocessor II is connected with communication module, display and keyboard.
3. battery set charge/discharge automatic management device according to claim 1; It is characterized in that: said battery switching device comprises the switching circuit; Said switching circuit comprises a common port, and said common port is connected with two branch roads that are in parallel, the positive pole of order body battery behind branch road tandem tap K1; The negative pole of order body battery behind another branch road tandem tap K2; Cell through two adjacent cells of front and back the mode that links to each other with common port of positive pole connect successively, the public termination load negative pole of the first cell, the positive pole of position, end cell connects the load positive pole; Said K switch 1 is connected with the switch driver that is used to drive its switching with K switch 2, and said switch driver connects the microprocessor I; K switch 2 closures in the switching circuit on the cell in the use, K switch 1 is broken off; K switch 1 closure in the switching circuit on the subsequent use cell, K switch 2 is broken off.
4. battery set charge/discharge automatic management device according to claim 1 is characterized in that: the microprocessor I of said sub-controller also is connected with abnormal protection module, parallel current-sharing module, LED battery status indicator light, program upgrade interface and adjustment control module.
5. battery set charge/discharge automatic management device according to claim 2 is characterized in that: the microprocessor II of said master controller also is connected with sound and light alarm module and program upgrade interface.
CN 201220208594 2012-05-10 2012-05-10 Automatic battery pack charging-discharging management device Active CN202633993U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102684262A (en) * 2012-05-10 2012-09-19 杨湘武 Automatic battery pack charging-discharging management device and working method thereof
CN108352719A (en) * 2015-10-19 2018-07-31 株式会社电装 Supply unit
CN108736541A (en) * 2015-07-31 2018-11-02 深圳市大疆创新科技有限公司 Power supply system, method for controlling power supply and the moveable platform with the power supply system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102684262A (en) * 2012-05-10 2012-09-19 杨湘武 Automatic battery pack charging-discharging management device and working method thereof
CN108736541A (en) * 2015-07-31 2018-11-02 深圳市大疆创新科技有限公司 Power supply system, method for controlling power supply and the moveable platform with the power supply system
CN108736541B (en) * 2015-07-31 2020-08-07 深圳市大疆创新科技有限公司 Power supply system, power supply control method and movable platform with power supply system
CN108352719A (en) * 2015-10-19 2018-07-31 株式会社电装 Supply unit

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