CN206865176U - High pressure lithium battery pack charge-discharge control system - Google Patents
High pressure lithium battery pack charge-discharge control system Download PDFInfo
- Publication number
- CN206865176U CN206865176U CN201720580620.6U CN201720580620U CN206865176U CN 206865176 U CN206865176 U CN 206865176U CN 201720580620 U CN201720580620 U CN 201720580620U CN 206865176 U CN206865176 U CN 206865176U
- Authority
- CN
- China
- Prior art keywords
- battery pack
- gate
- controlled switch
- power supply
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a kind of high pressure lithium battery pack charge-discharge control system, it is related to high pressure technical field of lithium batteries, wherein the charge-discharge control system includes：Battery pack branch road, including battery pack；First power supply branch road, include the first power supply and the first gate-controlled switch of series connection；Load branch, include load and the second gate-controlled switch of series connection；The impedance of load is less than the impedance of battery pack and the first power supply；Wherein, battery pack branch road, the first power supply branch road and load branch are in parallel；System also includes：Control module is detected, is connected respectively with the control terminal of the first gate-controlled switch, the second gate-controlled switch, for detecting the electricity of battery pack and producing control instruction according to the electricity of battery pack；Control instruction is used to control the first gate-controlled switch and the second gate-controlled switch to be opened or closed.Compared with individually using battery pack as the mode of load supplying, the power of supply load can be improved by technical solutions of the utility model.
Description
Technical field
It the utility model is related to high pressure technical field of lithium batteries, and in particular to a kind of high pressure lithium battery pack charge and discharge control system
System.
Background technology
High pressure lithium battery pack be widely used in the electric vehicles such as electric bicycle, electric wheelchair and electric drill, cutting machine,
The electric tools such as hay mover.Under normal circumstances, needed for the electric vehicle or electric tool being connected with high pressure lithium battery pack
The output power wanted does not convert, but under special case, the usual output power of high pressure lithium battery pack is difficult to meet need
Ask.For example, the welding rod that electric welding machine is generally welded is thin welding rod, the output power that high pressure lithium battery pack is provided is applied to electric welding machine
High-temperature electric arc is produced to melt the solder and materials to be welded on thin welding rod, the output power is not enough to produce the weldering made on thick welding rod
Material fusing.
The content of the invention
In view of this, the utility model embodiment provides a kind of high pressure lithium battery pack charge-discharge control system, to solve
The problem of high pressure lithium battery pack is not enough to provide output power needed for electric vehicle or electric tool.
According in a first aspect, the utility model embodiment provides a kind of high pressure lithium battery pack charge-discharge control system, bag
Include：Battery pack branch road, including battery pack；First power supply branch road, include the first power supply and the first gate-controlled switch of series connection；It is negative
Branch road is carried, includes load and the second gate-controlled switch of series connection；The impedance of the load is less than the battery pack and described first
The impedance of power supply；Wherein, the battery pack branch road, the first power supply branch road and the load branch are in parallel；It is described
System also includes：Control module is detected, is connected respectively with the control terminal of first gate-controlled switch, second gate-controlled switch,
For detecting the electricity of the battery pack and producing control instruction according to the electricity of the battery pack；The control instruction is used to control
Make first gate-controlled switch and second gate-controlled switch is opened or closed.
Alternatively, the battery pack branch road also includes：3rd gate-controlled switch, connected with the battery pack；Described 3rd can
The control terminal for controlling switch is connected with the detection control module, and the control instruction is additionally operable to control the 3rd gate-controlled switch to break
Open or close.
Alternatively, the system also includes：At least one second power supply branch road, the second power supply branch road include series connection
Second power supply and the 4th gate-controlled switch；It is described second power supply branch road with described first power supply branch road, the load branch and
The battery pack branch circuit parallel connection.
Alternatively, the battery pack is formed by multiple battery cells in series；The detection control module includes：Electric power detection
Unit, for detecting the electricity of the battery pack；Control submodule, including multiple Balance route plates and the first predeterminated voltage source,
Each Balance route plate includes：Voltage detection unit, for detecting the battery unit two corresponding to the Balance route plate
The voltage at end；First connecting valve, the first connecting valve series connection of multiple Balance route plates；One end connection described the after series connection
One predeterminated voltage source, the first predeterminated voltage source is used for the controlled switch conduction for controlling first gate-controlled switch, after series connection
The other end connect the control terminal of first gate-controlled switch；Control unit, it is connected with the voltage detection unit, for working as
When stating the voltage detection unit on Balance route plate and detecting that the voltage at battery unit both ends is more than the first predeterminated voltage, institute is controlled
First connecting valve stated on Balance route plate disconnects.
Alternatively, also include corresponding to the 3rd gate-controlled switch, each Balance route plate：Second connecting valve, it is multiple
The second connecting valve series connection of Balance route plate；One end after series connection connects the second predeterminated voltage source, second predeterminated voltage
Source is used for the controlled switch conduction for controlling the 3rd gate-controlled switch, and the other end after series connection connects the 3rd gate-controlled switch
Control terminal；Described control unit, it is additionally operable to when the voltage detection unit on the Balance route plate detects battery unit both ends
Voltage when being more than the second predeterminated voltage, control second connecting valve on the Balance route plate to disconnect.
Alternatively, control submodule also includes：The voltage detecting on master controller, with multiple Balance route plates
Unit connects respectively, for when the voltage for having battery unit both ends in the battery bag reaches three predeterminated voltages, control to be filled
Electrical equipment stops charging.
Alternatively, second predeterminated voltage is less than first predeterminated voltage.
Alternatively, the 3rd predeterminated voltage is less than second predeterminated voltage.
Alternatively, the detection control module also includes：Current detecting unit, it is connected on the load branch or described
In one power supply branch road, for detecting the electric current in battery pack charge or discharge loop；State master controller also with the current detecting
Unit connects, for when the electric current in battery charge or discharge loop is more than pre-set current value, controlling the charge or discharge
Loop disconnects.
Alternatively, in addition to the 5th gate-controlled switch and current-limiting resistance, the controlled terminal of the 5th gate-controlled switch and the limit
It is in parallel with the 3rd gate-controlled switch after leakage resistance series connection；The system also includes disconnecting switch, and short circuit inspection is opened for receiving
The order of brake, and control the 5th gate-controlled switch to be turned on or off；The control terminal of 5th gate-controlled switch with it is described
Disconnecting switch connects.
Alternatively, when the battery pack connects with load, the both ends of the load are also parallel with sensitivity resistor and optocoupler；
The primary side of the optocoupler is connected with the sensitivity resistor；One end connection power supply of the secondary of the optocoupler, other end connection inspection
Measuring resistance；The master controller is also connected with the detection resistance, for being preset when the voltage at the detection resistance both ends is less than
The 3rd gate-controlled switch is controlled to disconnect during magnitude of voltage.
Brief description of the drawings
Feature and advantage of the present utility model can be more clearly understood by reference to accompanying drawing, accompanying drawing be schematically without
It is interpreted as carrying out any restrictions to the utility model, in the accompanying drawings：
Fig. 1 shows the circuit original according to a kind of high pressure lithium battery pack charge-discharge control system of the utility model embodiment
Reason figure；
Fig. 2 shows the circuit of another high pressure lithium battery pack charge-discharge control system according to the utility model embodiment
Schematic diagram；
Fig. 3 shows the flow chart for increasing process control method according to a kind of high pressure lithium battery pack of the utility model embodiment.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the embodiment of the utility model is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model part of the embodiment, rather than whole embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those skilled in the art are obtained under the premise of creative work is not made, belongs to this reality
With novel protected scope.
Fig. 1 shows the circuit original according to a kind of high pressure lithium battery pack charge-discharge control system of the utility model embodiment
Reason figure, the high pressure lithium battery pack charge-discharge control system include battery pack branch road, the first power supply branch road, load branch and detection control
Molding block.
Battery pack branch road includes battery pack 100.The first power supply 210 and first that first power supply branch road includes series connection can
Control switch 220.Load branch includes the gate-controlled switch 320 of load 310 and second of series connection.Wherein, battery pack branch road is arranged at height
Press lithium battery pack inside, first power supply branch road and load branch be arranged at outside high pressure lithium battery pack, and with high pressure lithium battery
Bag is detachably connected, and battery pack branch road, the first power supply branch road and load branch are in parallel.The impedance of load 310 is less than battery pack
100 and first power supply 210 impedance.
The system also includes detection control module 400, the control terminal with the first gate-controlled switch 220, the second gate-controlled switch 320
Connect respectively, for detecting the electricity of battery pack 100 and producing control instruction according to the electricity of battery pack, the control instruction is used for
The first gate-controlled switch 220 and the second gate-controlled switch 320 is controlled to be opened or closed.
" power supply " (such as first power supply) described herein can be charger, or moving charging
Power supply (such as battery bag).
Gate-controlled switch described herein can be relay, reverse-blocking tetrode thyristor, or optical coupled switch.
Above-mentioned detection control module can use any one battery pack with processor or controller in the prior art
Electric quantity detecting circuit (wherein processor or controller are additionally operable to produce control instruction), the application is not limited this.Such as obtain
The voltage at power taking pond both ends, battery electric quantity is obtained according to the corresponding relation of voltage and electricity.
Above-mentioned high pressure lithium battery pack charge-discharge control system, battery pack, the first power supply and load are in parallel；First can
Control switch can control whether the first power supply accesses battery set charge/discharge system positioned at branch road where the first power supply；
Second gate-controlled switch can control whether load is powered using battery pack or the first power supply positioned at branch road where load.By
It is less than the impedance of battery pack and the first power supply in the impedance of load, when the first power supply and load are connected to battery pack simultaneously
, can be simultaneously for load supplying, so as to being supplied only with battery pack load with battery pack and the first power supply during both ends
The mode of electricity is compared, and load is obtained more powerful.
As a kind of optional embodiment of the present embodiment, the system also includes at least one second power supply branch road, and this
Two power supply branch roads include the second power supply 610 and the 4th gate-controlled switch 620 of series connection.The second power supply branch road and the first power supply
Branch road, load branch and battery pack branch circuit parallel connection.By at least one second power supply branch road, load institute can be further improved
Obtainable power.
As a kind of optional embodiment of the present embodiment, battery pack is formed by multiple battery cells in series.Detection control
Module 400 includes electric power detection unit and control submodule.
Wherein control submodule includes multiple Balance route plates and the first predeterminated voltage source, and each Balance route plate includes electricity
Press detection unit, the first connecting valve and control unit.Voltage detection unit is used to detect the battery corresponding to Balance route plate
The voltage at unit both ends.The first connecting valve series connection of multiple Balance route plates, one end after series connection connect the first predeterminated voltage
Source, the first predeterminated voltage source are used for the controlled switch conduction for controlling the first gate-controlled switch, and the other end connection first after series connection can
Control the control terminal of switch.Control unit is connected with voltage detection unit, for when the voltage detection unit inspection on Balance route plate
When measuring the voltage at battery unit both ends and being more than the first predeterminated voltage, the first connecting valve on Balance route plate is controlled to disconnect.
As shown in Fig. 2 battery pack includes the first battery 110, the second battery 120 and the 3rd battery 130, first is corresponded to respectively
Balance route plate 410, the second Balance route plate 420 and the 3rd Balance route plate 430.
First Balance route plate 410 includes voltage detection unit 411, the connecting valve 413 of control unit 412 and first.Electricity
Detection unit 411 is pressed to be used for the voltage for detecting the both ends of the first battery 110.Control unit 412 is used for when voltage detection unit 411 is examined
When measuring the voltage at the both ends of the first battery 110 and being more than the first predeterminated voltage, the first connecting valve 413 of control disconnects.
Second Balance route plate 420 includes voltage detection unit 421, the connecting valve 423 of control unit 422 and first.Electricity
Detection unit 421 is pressed to be used for the voltage for detecting the both ends of the second battery 120.Control unit 422 is used for when voltage detection unit 421 is examined
When measuring the voltage at the both ends of the second battery 120 and being more than the first predeterminated voltage, the first connecting valve 423 of control disconnects.
3rd Balance route plate 430 includes voltage detection unit 431, the connecting valve 433 of control unit 432 and first.Electricity
Detection unit 431 is pressed to be used for the voltage for detecting the both ends of the 3rd battery 130.Control unit 432 is used for when voltage detection unit 431 is examined
When measuring the voltage at the both ends of the 3rd battery 130 and being more than the first predeterminated voltage, the first connecting valve 433 of control disconnects.
The first end of above-mentioned first connecting valve 413 is connected with the first predeterminated voltage source 440, and the second end is connected out with first
Close 423 first end connection；Second end of the first connecting valve 423 is connected with the first end of the first connecting valve 433；First connects
The second end for connecing switch 433 is connected with the control terminal of the first gate-controlled switch 220.
Above-mentioned high pressure lithium battery pack charge-discharge control system, including multiple Balance route plates are set, on Balance route plate
First connecting valve is set, and the first connecting valve of multiple Balance route plates is connected into line, the first default electricity of one end connection of line
Potential source, the other end of line connect the control terminal of the first gate-controlled switch, and will pass through, the first predeterminated voltage source control first is controllable to open
Pass is opened or closed, so as to control battery charge circuit to connect or disconnect；In addition, set Balance route plate on control unit with
Voltage detection unit connects, when the voltage for detecting battery unit both ends when voltage detection unit is more than the first predeterminated voltage
Control the first connecting valve to disconnect, so that the first gate-controlled switch in the first power supply branch road disconnects, then disconnect and charging back
Road, to ensure the security of battery pack charging.
As a kind of optional embodiment of the present embodiment, battery pack branch road also includes the 3rd gate-controlled switch 500, with battery
The series connection of group 100.3rd gate-controlled switch 500 is two-way gate-controlled switch, and its control terminal is connected with detection control module 400, detected
Control instruction caused by control module 400 is additionally operable to control the 3rd gate-controlled switch 500 to be opened or closed.
Because the 3rd gate-controlled switch is connected with battery pack, and battery pack branch road and the first power supply branch road and load branch are simultaneously
Connection, therefore can control whether battery pack is load supplying by the 3rd gate-controlled switch, detection control module, or control is
It is no to be charged by power supply for battery pack.
Further, the second connecting valve is also included corresponding to the 3rd gate-controlled switch 500, each Balance route plate.It is multiple
The second connecting valve series connection of Balance route plate；One end after series connection connects the second predeterminated voltage source, and the second predeterminated voltage source is used
In the controlled switch conduction for controlling the 3rd gate-controlled switch, the other end after series connection connects the control terminal of the 3rd gate-controlled switch.Control
Unit is additionally operable to when the voltage detection unit on Balance route plate detects that the voltage at battery unit both ends is more than the second default electricity
During pressure, the second connecting valve on Balance route plate is controlled to disconnect.
As shown in Fig. 2 the first Balance route plate 410 includes the second connecting valve 414, the second Balance route plate 420 includes
Second connecting valve 424, the 3rd Balance route plate 430 include the second connecting valve 434.The of above-mentioned second connecting valve 414
One end is connected with the second predeterminated voltage source 450, and the second end is connected with the second end of the second connecting valve 424；Second connecting valve
424 the second end is connected with the first end of the second connecting valve 434；Controllable opened with the 3rd at second end of the second connecting valve 434
Close 500 control terminal connection.
Above-mentioned high pressure lithium battery pack charge-discharge control system, sets the second connecting valve, Duo Gejun on Balance route plate
Second connecting valve of weighing apparatus control panel is connected into line, and one end of line connects the second predeterminated voltage source, the other end connection the 3rd of line
The control terminal of gate-controlled switch, the 3rd gate-controlled switch is controlled to be opened or closed will pass through the second predeterminated voltage source, so as to control electricity
Pond charge or discharge circuit communication or disconnection；In addition, set the control unit on Balance route plate to be connected with voltage detection unit,
Voltage for detecting battery unit both ends when voltage detection unit controls the second connecting valve when being more than the second predeterminated voltage
Disconnect, so that the 3rd gate-controlled switch in battery pack branch road disconnects, charge or discharge loop is then disconnected, to ensure battery
The security of group discharge and recharge.
It should be added that the electric power detection unit in detection control module 400 can be disposed on outside balancing disk
Portion, detect the electricity of whole battery pack；It can also be made up of multiple detection sub-units, each detection sub-unit is respectively arranged at
On Balance route plate, for detecting the electricity of the battery unit corresponding to the Balance route plate.
As a kind of optional embodiment of the present embodiment, control submodule also includes master controller 460, and multiple balanced
Voltage detection unit on control panel connects respectively, for being preset when the voltage for having battery unit both ends in battery bag reaches the 3rd
During voltage, the first power supply of control stops charging.As shown in Fig. 2 the voltage on the Balance route plate of master controller 460 and first
Detection unit 411, the voltage detection unit 421 on the second Balance route plate, the voltage detection unit on the 3rd Balance route plate
431 connect respectively.The voltage at any battery unit both ends reaches in first battery 110, the second battery 120, the 3rd battery 130
During three predeterminated voltages, main control 460 controls charger to stop charging.Main control 460 can directly control battery bag is special to fill
Electrical equipment stops charging (such as sending the gate-controlled switch disconnection of wireless signal control charger internal), and the application is to master controller
The concrete form that 460 the first power supplies of control stop charging being not construed as limiting.
Above-mentioned first predeterminated voltage, the second predeterminated voltage and the 3rd predeterminated voltage can be with equal, can also be unequal.It is optional
Ground, the first predeterminated voltage are less than the second predeterminated voltage, and the 3rd predeterminated voltage is less than the first predeterminated voltage.For example, the 3rd default electricity
It is 4.20V to press as 4.15V, the first predeterminated voltage, and the second predeterminated voltage is 4.22V.
That is, during charging, cell voltage gradually rises in battery bag, when the voltage for having battery unit both ends is big
When 4.15V, main control 460 first controls the first power supply to stop charging, to prevent overtension from causing danger.
And if main control 460 is broken down, the first power supply continues to charge the battery, when there is battery unit both ends
When voltage is more than 4.20V, corresponding first connecting valve can disconnect, and the first default power supply 440 can not pass through each Balance route plate
In the first gate-controlled switch of line traffic control 220 for being in series of the first connecting valve turn on, i.e., ought have the voltage at battery unit both ends big
When 4.20V, the first gate-controlled switch 220 can disconnect, and battery charge circuit disconnects, and again ensure that the security of charging.
Further, when the first gate-controlled switch 220 disconnects not successfully, then the first charge power supply continues to charge to battery pack,
When the voltage for having battery unit both ends is more than 4.22V, corresponding second connecting valve can disconnect, and the second default power supply 450 is not
The gate-controlled switch 500 of line traffic control the 3rd that can be in series by the second connecting valve in each Balance route plate turns on, i.e., ought have battery
When voltage is more than 4.22V, the 3rd gate-controlled switch 500 can disconnect, and battery charge circuit disconnects, and further ensure that the safety of charging
Property.
Above-mentioned high pressure lithium battery pack charge-discharge control system, make the first predeterminated voltage source by the first connecting valve connect and
Into the gate-controlled switch of line traffic control first, or the line traffic control for making the second predeterminated voltage source be in series by the second connecting valve
Three gate-controlled switches, so as to control charge and discharge circuit communication or disconnection, so as to when the voltage detection unit on any Balance route plate
When detecting the electric voltage exception at battery unit both ends, charge and discharge loop can all disconnect, so as to ensure security.
On the other hand, when any first connecting valve or the second connecting valve disconnect and cause line to disconnect, charge and discharge are returned
Road can also disconnect, to prevent because security mechanism failure is unable to successfully disconnect charge and discharge time in cell voltage exception
Road.
In addition, when the voltage at battery both ends is more than the 3rd predeterminated voltage rank, powered by main controller controls first
Power supply disconnects；When the voltage at battery both ends is more than the first predeterminated voltage rank, opened by the first connection on Balance route plate
The gate-controlled switch of line traffic control first being in series is closed to disconnect；When cell voltage is more than the second predeterminated voltage rank, pass through equilibrium
The gate-controlled switch of line traffic control the 3rd that the second connecting valve on control panel is in series disconnects, it can be seen that, high pressure lithium battery pack
Charge-discharge control system includes three different control executing agencies, i.e. the first gate-controlled switch, the 3rd gate-controlled switch and control
The first power supply (such as charger) that device processed can be controlled directly, it can be disconnected by controlling any one executing agency to disconnect
Charge circuit, so as to realize that triple safe mechanism ensures that the voltage at battery both ends in charging process will not be too high, so that it is guaranteed that high
Press the charge and discharge security of lithium battery.
As shown in Fig. 2 detection control module 400 also includes current detecting unit 470, load branch or the can be connected on
In one power supply branch road, (location A in such as Fig. 2) can also be connected in battery pack branch road, is charged for detecting battery in battery bag
Or the electric current in discharge loop.Master controller 460 is also connected with current detecting unit 470, for being returned when battery charge or discharge
When electric current in road is more than pre-set current value, control charge or discharge loop disconnects, so as to ensure that high pressure lithium battery fills, put
Electric current will not be too high in electric process, to ensure the charge and discharge security of high pressure lithium battery.
Further, as shown in Fig. 2 diode 230 is also in series with the first power supply branch road, for preventing in charging process
Supply current flows back.Fuse 330 is additionally provided with load branch, its blowout current is 40A to 80A, for protecting battery pack
Electric current during electric discharge will not be excessive.
As shown in Fig. 2 also include the 5th gate-controlled switch 700 and current-limiting resistance in high pressure lithium battery pack charge-discharge control system
800, the controlled terminal of the 5th gate-controlled switch 700 is in parallel with the 3rd gate-controlled switch 500 after being connected with current-limiting resistance 800.The system is also
Including disconnecting switch 900, the order of function of short circuit detection is opened for receiving, and controls the 5th gate-controlled switch 700 to lead on-off
Open.The order of the unlatching function of short circuit detection can be user by battery bag outside button send or other work(
Energy module is sent, and the application is construed as limiting not to this.The control terminal of 5th gate-controlled switch 700 is connected with disconnecting switch 900.
Before battery powering load, under the disconnection of the 3rd gate-controlled switch 500, when needing to carry out short-circuit detecting, every
Leave pass 900 and receive order, and control the 5th gate-controlled switch 700 to turn on.If load short circuits, battery power discharge electric current flows through
Five gate-controlled switches 700 and current-limiting resistance 800 form loop, and current-limiting resistance 800 make it that loop current will not be excessive.Now, battery
The voltage at group both ends is mainly undertaken by current-limiting resistance 800, and loads the voltage very little at both ends.If in load both ends shunt voltage inspection
Survey unit then can judge whether load is short-circuit according to the voltage at load both ends.
As a kind of optional embodiment of the present embodiment, when battery pack connects with load, the both ends of load are also parallel with
Sensitivity resistor 1000 and optocoupler 1100.The primary side of optocoupler 1100 is connected with sensitivity resistor 1000；The secondary of optocoupler 1100
One end connects power supply, other end connecting detection resistance 1200.If during load short circuits, flowing through the electric current very little of the primary side of optocoupler 1100,
So as to which the voltage of the detection resistance 1200 detected by main control 460 is smaller；If load is not short-circuit, electric current can not be formed and returned
Road, the voltage at battery pack both ends is all carried in load both ends, therefore the electric current for flowing through the primary side of optocoupler 1100 is larger.Thus, it is main
Controller 460 can judge whether load is short-circuit by the voltage swing of detected detection resistance 1200.It can also lead to
Sensitivity resistor 1000 is crossed to adjust the sensitivity of detection.Master controller 460 is also connected with detection resistance 1200, for when detection
The 3rd gate-controlled switch 500 is controlled to disconnect when the voltage at the both ends of resistance 1200 is less than preset voltage value, so that in battery pack to load
During power supply, if load short circuits, system can disconnect electric discharge backflow automatically, so that it is guaranteed that the security of battery power discharge.
The utility model embodiment illustrates technical side of the present utility model only so that battery pack is three battery series connection as an example
Case.It should be added that the number of battery in battery pack unit can be multiple, however it is not limited to three；And the company of battery
The mode of connecing is also not necessarily limited to connect, and can also be in parallel, or after first connecting it is in parallel, first in parallel after connect.
Fig. 3 shows the flow chart for increasing process control method according to a kind of high pressure lithium battery pack of the utility model embodiment.
This method is applied to the high pressure lithium battery pack charge-discharge control system shown in Fig. 1 or Fig. 2.According to Fig. 3, this method is included such as
Lower step：
S10：It is simultaneously load supplying to control at least one power supply of battery pack and outside in high pressure lithium battery pack.Outside
Portion's power supply can be charger or other battery bags.
Such as shown in Fig. 1, the first gate-controlled switch of closure, the 4th gate-controlled switch, the second gate-controlled switch and the 3rd gate-controlled switch,
Make the first power supply, the second power supply, load in parallel with battery pack, because the impedance of load is smaller, the first power supply,
Second power supply and the electric current of battery pack flow into load.
Now, if the power output of battery pack is WB, the power output of the first power supply is WC1, the second power supply
Power output be WC2, the input power of load is WF, then WF=WB+WC1+WC2；And battery pack is individually used to be supplied for load
When electric, the input power WF=WB of load.By contrast, this programme can be that the power that load provides improves WC1+WC2.
S20：When the actual electricity of battery pack and the ratio of its specified electric quantity drop to the first predetermined threshold, cut-out load
Branch road, it is battery-powered to make outside at least one power supply.When the ratio of the actual electricity and its specified electric quantity of battery pack
Rise to the second predetermined threshold (such as reaching the 99% of rated capacity, the upper limit for the electricity that can be now stored for battery pack)
When, perform one of step S30 or S40.
Use the example above, when the electricity of battery pack less (being, for example, the 60% of specified electric quantity), keep the first gate-controlled switch
Closed with the 4th gate-controlled switch, disconnect the second gate-controlled switch, now the first power supply, the electric current of the second power supply flow into
Battery pack charges for it；Or only keep one of the first gate-controlled switch or the 4th gate-controlled switch to close, it is controllable to disconnect second
Switch, it is battery-powered only with one of the first power supply or the second power supply.
S30：When the actual electricity of battery pack and the ratio of its specified electric quantity rise to the second predetermined threshold, make load branch
Road connects, and makes battery pack and outside at least one power supply while is load supplying.
S40：When the actual electricity of battery pack and the ratio of its specified electric quantity rise to the second predetermined threshold, cut-out power supply
Branch road, externally fed power supply is set to stop to be battery-powered, to prevent battery charging excessive.
Above-mentioned high pressure lithium battery pack increases process control method, controls battery pack in high pressure lithium battery pack and outside at least one
Power supply is simultaneously load supplying, with individually using battery pack compared with the mode of load supplying, it is possible to increase supply load
Power；When the actual electricity of battery pack and the ratio of its specified electric quantity drop to the first predetermined threshold, load branch is cut off,
It is battery-powered to make outside at least one power supply；When the ratio of the actual electricity and its specified electric quantity of battery pack rises to
During Second Threshold, then load branch is connected, make battery pack and outside at least one power supply while be load supplying, or
When the actual electricity of battery pack and the ratio of its specified electric quantity rise to Second Threshold, cut-out power supply branch road, to prevent battery
Charging is excessive.
Although being described in conjunction with the accompanying embodiment of the present utility model, those skilled in the art can not depart from this
Various modification can be adapted in the case of the spirit and scope of utility model and modification, and such modifications and variations are each fallen within by appended power
Profit is required within limited range.
Claims (10)
- A kind of 1. high pressure lithium battery pack charge-discharge control system, it is characterised in that including：Battery pack branch road, including battery pack；First power supply branch road, include the first power supply and the first gate-controlled switch of series connection；Load branch, include load and the second gate-controlled switch of series connection；The impedance of the load is less than the battery pack and institute State the impedance of the first power supply；Wherein, the battery pack branch road, the first power supply branch road and the load branch are in parallel；The system also includes：Control module is detected, is connected respectively with the control terminal of first gate-controlled switch, second gate-controlled switch, for detecting The electricity of the battery pack simultaneously produces control instruction according to the electricity of the battery pack；The control instruction is used to control described the One gate-controlled switch and second gate-controlled switch are opened or closed.
- 2. high pressure lithium battery pack charge-discharge control system according to claim 1, it is characterised in that the battery pack branch road Also include：3rd gate-controlled switch, connected with the battery pack；The control terminal of 3rd gate-controlled switch and the detection control module Connection, the control instruction are additionally operable to control the 3rd gate-controlled switch to be opened or closed.
- 3. high pressure lithium battery pack charge-discharge control system according to claim 1, it is characterised in that the system is also wrapped Include：At least one second power supply branch road, second power supply and fourth of the second power supply branch road including series connection are controllable to be opened Close；The second power supply branch road and the described first power supply branch road, the load branch and the battery pack branch circuit parallel connection.
- 4. high pressure lithium battery pack charge-discharge control system according to claim 1 or 2, it is characterised in that the battery pack Formed by multiple battery cells in series；The detection control module includes：Electric power detection unit, for detecting the electricity of the battery pack；Control submodule, including multiple Balance route plates and the first predeterminated voltage source, each Balance route plate include：Voltage detection unit, for detecting the voltage at the battery unit both ends corresponding to the Balance route plate；First connecting valve, the first connecting valve series connection of multiple Balance route plates；One end connection described first after series connection is pre- If voltage source, the first predeterminated voltage source is used for the controlled switch conduction for controlling first gate-controlled switch, another after series connection One end connects the control terminal of first gate-controlled switch；Control unit, it is connected with the voltage detection unit, for when the voltage detection unit detection on the Balance route plate When voltage to battery unit both ends is more than the first predeterminated voltage, first connecting valve on the Balance route plate is controlled Disconnect.
- 5. high pressure lithium battery pack charge-discharge control system according to claim 4, it is characterised in that controllable corresponding to the 3rd Switch, each Balance route plate also include：Second connecting valve, the second connecting valve series connection of multiple Balance route plates；The second default electricity of one end connection after series connection Potential source, the second predeterminated voltage source are used for the controlled switch conduction for controlling the 3rd gate-controlled switch, the other end after series connection Connect the control terminal of the 3rd gate-controlled switch；Described control unit, it is additionally operable to when the voltage detection unit on the Balance route plate detects the electricity at battery unit both ends When pressure is more than the second predeterminated voltage, second connecting valve on the Balance route plate is controlled to disconnect.
- 6. high pressure lithium battery pack charge-discharge control system according to claim 5, it is characterised in that control submodule is also wrapped Include：Master controller, it is connected respectively with the voltage detection unit on multiple Balance route plates, for when the battery When having the voltage at battery unit both ends to reach three predeterminated voltages in bag, control charger stops charging.
- 7. high pressure lithium battery pack charge-discharge control system according to claim 6, it is characterised in that the described second default electricity Pressure is less than first predeterminated voltage, and the 3rd predeterminated voltage is less than second predeterminated voltage.
- 8. high pressure lithium battery pack charge-discharge control system according to claim 6, it is characterised in that the detection control mould Block also includes：Current detecting unit, be connected on the load branch or it is described first power supply branch road in, for detect battery pack charging or Electric current in discharge loop；The master controller is also connected with the current detecting unit, for being more than when the electric current in battery charge or discharge loop During pre-set current value, the charge or discharge loop is controlled to disconnect.
- 9. high pressure lithium battery pack charge-discharge control system according to claim 2, it is characterised in that also controllable including the 5th Switch and current-limiting resistance, the controlled terminal of the 5th gate-controlled switch and the current-limiting resistance series connection after with the 3rd gate-controlled switch It is in parallel；The system also includes disconnecting switch, and the order of function of short circuit detection is opened for receiving, and controls the described 5th controllable Switch conduction or disconnection；The control terminal of 5th gate-controlled switch is connected with the disconnecting switch.
- 10. high pressure lithium battery pack charge-discharge control system according to claim 6, it is characterised in that the battery pack with During load connection, the both ends of the load are also parallel with sensitivity resistor and optocoupler；The primary side of the optocoupler is connected with the sensitivity resistor；One end connection power supply of the secondary of the optocoupler, the other end connect Connect detection resistance；The master controller is also connected with the detection resistance, is less than predeterminated voltage for the voltage when the detection resistance both ends The 3rd gate-controlled switch is controlled to disconnect during value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720580620.6U CN206865176U (en) | 2017-05-23 | 2017-05-23 | High pressure lithium battery pack charge-discharge control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720580620.6U CN206865176U (en) | 2017-05-23 | 2017-05-23 | High pressure lithium battery pack charge-discharge control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206865176U true CN206865176U (en) | 2018-01-09 |
Family
ID=60825378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720580620.6U Expired - Fee Related CN206865176U (en) | 2017-05-23 | 2017-05-23 | High pressure lithium battery pack charge-discharge control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206865176U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086629A (en) * | 2017-05-23 | 2017-08-22 | 苏州盈动力新能源科技有限公司 | High pressure lithium battery pack charge-discharge control system and increasing process control method |
| CN108988445A (en) * | 2018-10-10 | 2018-12-11 | 北京动力京工科技有限公司 | A kind of the multichannel variety classes battery pack parallel control device and method of tandem tap |
| CN110391471A (en) * | 2018-04-18 | 2019-10-29 | 宁德时代新能源科技股份有限公司 | Electric box self-distribution circuit control system and method, electric box and delivery vehicle |
| WO2020135351A1 (en) * | 2018-12-29 | 2020-07-02 | 中兴通讯股份有限公司 | Charging/discharging apparatus, control method and apparatus, battery apparatus, and storage medium |
-
2017
- 2017-05-23 CN CN201720580620.6U patent/CN206865176U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086629A (en) * | 2017-05-23 | 2017-08-22 | 苏州盈动力新能源科技有限公司 | High pressure lithium battery pack charge-discharge control system and increasing process control method |
| CN110391471A (en) * | 2018-04-18 | 2019-10-29 | 宁德时代新能源科技股份有限公司 | Electric box self-distribution circuit control system and method, electric box and delivery vehicle |
| CN108988445A (en) * | 2018-10-10 | 2018-12-11 | 北京动力京工科技有限公司 | A kind of the multichannel variety classes battery pack parallel control device and method of tandem tap |
| WO2020135351A1 (en) * | 2018-12-29 | 2020-07-02 | 中兴通讯股份有限公司 | Charging/discharging apparatus, control method and apparatus, battery apparatus, and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107086629A (en) | High pressure lithium battery pack charge-discharge control system and increasing process control method | |
| CN106374588B (en) | A kind of safety management system of high pressure lithium battery pack failure | |
| CN206865176U (en) | High pressure lithium battery pack charge-discharge control system | |
| CN103683374B (en) | Battery system and energy storage system | |
| KR100824888B1 (en) | Hybrid battery pack, and charging method and discharging method thereof | |
| CN104079017B (en) | A kind of cell managing device, power-supply system and battery balanced method | |
| CN105406580B (en) | A kind of electric power system and method | |
| CN101262140A (en) | Serial and parallel switching and charging method and charging device for lithium dynamic battery unit | |
| CN104184192A (en) | Charging and discharging active equalization circuit for lithium ion power battery pack | |
| WO2018019127A1 (en) | Large-power portable lithium battery pack for electric tool | |
| CN109677296A (en) | A kind of power battery and its control method, electric car | |
| CN206226070U (en) | A kind of safety management system of high pressure lithium battery pack failure | |
| CN106300514A (en) | Electric automobile fast charging and discharging system, method and electric automobile | |
| CN203843347U (en) | Portable off-grid type direct-current arc welding machine with built-in lithium battery pack | |
| CN204046239U (en) | A kind of charging/discharging active equalization circuit for lithium ion power battery pack | |
| CN203103992U (en) | Battery module management and control system | |
| CN107370168A (en) | Electrical energy storage | |
| CN105490349A (en) | Power supply system and power supply method of mobile terminal | |
| CN104300605B (en) | Power circuit and control method thereof | |
| CN108099637A (en) | A kind of battery management system | |
| CN106712168A (en) | Parallel battery pack two-way lossless equalization circuit based on inductance energy storage | |
| CN205407350U (en) | Lithium ion battery electric power and for communication DC power supply system | |
| CN105048017B (en) | It is a kind of to solve the problems, such as between multiple battery packs the mutually method of discharge and recharge | |
| CN111443256A (en) | Fill electric pile performance detection device | |
| CN206099394U (en) | Quick battery charge and discharge of electric automobile and electric automobile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180109 Termination date: 20190523 |