CN106992565A - A kind of Battery Constant Current Discharging Device - Google Patents
A kind of Battery Constant Current Discharging Device Download PDFInfo
- Publication number
- CN106992565A CN106992565A CN201710256620.5A CN201710256620A CN106992565A CN 106992565 A CN106992565 A CN 106992565A CN 201710256620 A CN201710256620 A CN 201710256620A CN 106992565 A CN106992565 A CN 106992565A
- Authority
- CN
- China
- Prior art keywords
- control
- discharge
- battery
- fan
- resistance
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention relates to a kind of Battery Constant Current Discharging Device, including：Resistance circuit and control circuit；The resistance circuit includes：PTC resistor, resistance switch and fan component；The fan component is suitable to the temperature for the PTC resistor that control has been accessed in the battery discharging loop；The control circuit includes：Current detecting end, resistance switch control end and rotation speed of the fan control end；The current detecting end is adapted to detect for the discharge signal in the battery discharging loop；The resistance switch control end is suitable to export the first control signal of the resistance switch to control the open and-shut mode of the resistance switch according to the discharge signal；The rotation speed of the fan control end is suitable to export the second control signal of the fan component to control the rotating speed of the fan component according to the discharge signal.The present invention can realize that the electric current in battery discharging overall process is constant.
Description
Technical field
The present invention relates to battery circuit field, more particularly to a kind of Battery Constant Current Discharging Device.
Background technology
It is well known that lead-acid accumulator is after longtime running, usually occur active material come off, electrolyte dry-out,
The phenomenons such as pole plate deformation, grid corrosion and vulcanization, cause accumulator capacity reduction or even fail.Therefore, in good time to lead acid storage battery
Pond carries out the electric discharge of verification property and activation discharge experiment, to examining accumulator capacity and increasing storage battery service life to have important meaning
Justice.According to batteries maintenance requirement, when carrying out the electric discharge of verification property to battery, it is necessary to according to the discharge rate of regulation to electric power storage
Pond carries out constant-current discharge.
Domestic common electric discharge device is divided into following two at present：
(1) constant-resistance discharge
As shown in Fig. 1 a kind of structural representation of battery constant-resistance discharge device, wherein constant-resistance discharge
Mode is, using thermal resistance as load, battery electric energy to be consumed in the form of heat energy, reaches electric discharge purpose, and radiating is general to be used
Natural heat dissipation, air-cooled and water cooling.When its principle includes electric discharge by access the resistance R1 of varying number, R2 ..., Rn controls to put
Electric current, switch QF1, QF2 ..., QFn be respectively used to control resistance R1, R2 ..., Rn access situation.But which have with
Lower shortcoming：A) when accumulator battery voltage is reduced, discharge current accordingly diminishes, it is difficult to ensure constant-current discharge；B) it is fragile, use
Short life, maintenance workload is big；C) climate influence is big during operation, simultaneously because there is naked light, security is low；D) volume is big.
(2) the constant-current discharge mode based on IGBT Power Electronic Technique
As shown in Fig. 2 a kind of structural representation of the Battery Constant Current Discharging Device based on solid-state relay technology,
Which is that, using thermal resistance R1 as load, load branch series IGBT power electronics pipe G1, control system is driven by IGBT
Circuit come control IGBT conducting with by.When IGBT electron tubes G1 is turned on, load R1 access main circuits；When IGBT electron tubes
During G1 shut-off, load R1 disconnects from main circuit.Change the PWM ripple dutycycles of drive circuit by PWM control technologies, and then
Regulate and control IGBT service time to ensure the constant current hold of whole system.Which has the disadvantage that：Electric power storage when a) discharging
Pond two ends can produce high-frequency harmonic, and then can influence storage battery power supply quality；Power when b) due to battery discharging is big, control
Required the type power electronics tube power can hardly meet the requirement；C) need external civil power to carry out secondary power supply to power；
D) while the volume of the device is larger.
The content of the invention
Technical solution of the present invention provides a kind of Battery Constant Current Discharging Device, can solve the problem that battery discharging in the prior art
During can not ensure the problem of discharge current value is constant.
In order to solve the above-mentioned technical problem, technical solution of the present invention provides a kind of Battery Constant Current Discharging Device, is suitable to
Battery discharging loop, including：Resistance circuit and control circuit；
The resistance circuit includes：PTC resistor, resistance switch and fan component；
The resistance switch is suitable to correspondence PTC resistor is accessed into the battery discharging loop and when disconnecting in closure
Will correspondence PTC resistor shorted on both ends, the PTC resistor that the fan component has been accessed in the battery discharging loop suitable for control
Temperature；
The control circuit includes：Current detecting end, resistance switch control end and rotation speed of the fan control end；
The current detecting end is adapted to detect for the discharge signal in the battery discharging loop；
The resistance switch control end is suitable to the first control signal that the resistance switch is exported according to the discharge signal
To control the open and-shut mode of the resistance switch；
The rotation speed of the fan control end is suitable to the second control signal that the fan component is exported according to the discharge signal
To control the rotating speed of the fan component.
Optionally, the battery includes discharge end and on the ground, the multiple PTC resistors of the resistance switch correspondence, described
One end of PTC resistor is connected with the discharge end respectively, and the other end is respectively connecting to corresponding resistance switch.
Optionally, one end of the PTC resistor is connected by selecting switch with the discharge end, and the control circuit is also wrapped
Include：Selecting switch control end, the selecting switch control end is suitable to export the 3rd control signal in battery discharging to control
The open and-shut mode of the selecting switch.
Optionally, the selecting switch is switching tube, and the switching tube includes first input end, the first output end and first
Control end；The first input end is connected with the discharge end, and the first output end is connected with corresponding PTC resistor, the first control end
It is connected to the 3rd control signal.
Optionally, the resistance switch is solid-state relay, and the solid-state relay includes the second input, the second output
End and the second control end；Second input is connected with the multiple PTC resistor respectively, and second output end connects over the ground
Connect, second control end is connected to first control signal.
Optionally, the control circuit also includes：Current sensor, error amplifier and pi regulator；
The current sensor includes electric current and senses input and electric current inductive output end, and the electric current sensing input is fitted
In accessing the discharge signal in the battery discharging loop, the electric current inductive output end is adapted to the current detecting
End；
The error amplifier includes：Anode input, negative terminal input and error input, the pi regulator bag
Include：Adjust input and regulation output end；The anode input is connected to reference signal, and the negative terminal input is connected to institute
Current detecting end is stated, the regulation input is connected to the error input, and the regulation output end is connected to the fan
Rotating speed control end.
Optionally, the control circuit also includes：Power controller, the regulation output end passes through the power controller
It is connected to the rotation speed of the fan control end.
Optionally, the fan component includes：DC fan.
Optionally, the discharge signal is discharge current, and first control signal is control voltage, second control
Signal is fan blower fan supply voltage.
Optionally, the control circuit also includes：Drive circuit, the drive circuit includes drive output, the drive
Dynamic output end is connected to the resistance switch control end；
The externally connected select button of drive circuit, and suitable for being put described in the position judgment of the outside select button
Electric signal is with drive output output first control signal.
The beneficial effect of technical solution of the present invention at least includes：
Technical solution of the present invention as discharge load, possesses excellent constant-current discharge performance and hair using PTC resistor
Thermal power adjustability；In discharge process, when storage battery drops, technical solution of the present invention by control electric circuit inspection and
Adjust the fan component and resistance switch of resistance circuit to adjust PTC resistor dissipated power, be allowed to fall off rate and voltage
Fall off rate is consistent, and can realize that the electric current in electric discharge overall process is constant, so as to solve prior art battery discharging
The problem of discharge current value is constant can not be ensured in journey.
Technical solution of the present invention is control discharge current, is also provided with consolidating for controllable PTC resistor access battery loop
State relay, wherein solid-state relay can control a PTC resistor, can also control multiple PTC resistors.When needs access difference
During number load, control circuit can control corresponding solid-state relay work, and PTC electricity is controlled by the closure of solid-state relay
The access of resistance.
Technical solution of the present invention is also provided with selecting switch control end, and selecting switch control end is arranged at every PTC resistor
Load branch, and connected with every PTC resistor load branch.Selecting switch control end can be dc circuit breaker, to protect branch
Short out road or overload.
The Battery Constant Current Discharging Device of technical solution of the present invention is when being discharged, and control circuit can control varying number
Solid-state relay work so that the work of solid-state relay corresponding PTC resistor, converts electrical energy into heat energy, with to battery
Constant-current discharge.Circuit regulation rotation speed of the fan is controlled to change the air quantity by PTC resistor surface simultaneously.In discharge process, control
Electric circuit inspection electric current processed, and coarse adjustment is carried out to discharge current by adjusting solid-state relay opening and closing, and rotation speed of the fan is controlled to putting
Electric current carries out fine tuning, and the two, which is combined with each other, makes the discharge current in battery discharging loop keep constant.
Application of the technical solution of the present invention based on PTC resistor, and air quantity of fan is adjusted by PID control technology indirectly make storage
Battery discharge current reaches constant；Technical solution of the present invention is also using the solid-state relay control PTC resistor with short-circuit protection
Loop access, the regulation of discharge current constant and load resistance can be achieved.
Brief description of the drawings
The technical and industrial meaning to the feature, advantage and illustrative embodiments of invention is entered referring to the drawings
Row description, in the accompanying drawings, identical reference indicates identical element, and wherein：
Fig. 1 is a kind of structural representation of the Battery Discharging Device provided in the prior art；
Fig. 2 is the structural representation of another Battery Discharging Device provided in the prior art；
Fig. 3-1 is the characteristic curve schematic diagram between a kind of temperature and resistance of PTC resistor involved by technical solution of the present invention；
Fig. 3-2 is the appearance schematic diagram of PTC resistor involved by technical solution of the present invention；
Fig. 3-3 is the current constant control schematic diagram of Battery Constant Current Discharging Device involved by technical solution of the present invention；
The structural representation for the first Battery Constant Current Discharging Device that Fig. 4 provides for technical solution of the present invention；
The structural representation for second of Battery Constant Current Discharging Device that Fig. 5 provides for technical solution of the present invention；
The structural representation for the third Battery Constant Current Discharging Device that Fig. 6 provides for technical solution of the present invention；
The structural representation for the 4th kind of Battery Constant Current Discharging Device that Fig. 7 provides for technical solution of the present invention；
The structural representation for the 5th kind of Battery Constant Current Discharging Device that Fig. 8 provides for technical solution of the present invention；
The structural representation for the 6th kind of Battery Constant Current Discharging Device that Fig. 9 provides for technical solution of the present invention；
The structural representation for the 7th kind of Battery Constant Current Discharging Device that Figure 10 provides for technical solution of the present invention；
Figure 11 provides the structural representation of the application examples of Battery Constant Current Discharging Device for technical solution of the present invention；
Figure 12 provides the structural representation that circuit application examples is controlled in Battery Constant Current Discharging Device for technical solution of the present invention
Figure.
Embodiment
Traditional Battery Discharging Device uses resistance wire as discharge resistance, because its resistance immobilizes,
With the continuous reduction of battery voltage in discharge process, discharge current constantly reduces, it is impossible to realize that the electric current of discharge process is permanent
Fixed, the calculating to accumulator capacity can not be accurately reflected；In discharge process, resistance wire sends feux rouges, and safety coefficient is relatively low.
PTC exothermic materials are a kind of new non-linear resistance materials, when reaching Curie-point temperature, and resistance is drastically
Increase, its temperature coefficient is up to 10~60%/DEG C (positive temperature characterisitic).Temperature, which is controlled, can reach the regulation to resistance
(PTC effects), such as Fig. 3-1 illustrates a kind of resistance of PTC resistor and the characteristic curve of temperature, there it can be seen that in temperature
During Tmin, the minimum Rmin of its resistance, when temperature is Tmax, its resistance is maximum and reaches Rmin, and temperature Tc to Tp it
Between, its temperature rises in proportion substantially.
The dissipated power of PTC sensitive ceramic resistors is relevant with the ventilation of its spreader surface, is made pottery by adjusting PTC temperature-sensitives
The ventilation of the spreader surface of porcelain resistance, keeps the dissipated power and battery tension of PTC sensitive ceramic resistors to press identical
Downward trend changes, it is possible to remain the constant of discharge current, and the control of ventilation can be by adjusting DC fan
Rotating speed adjust, so the fan power supply of control rotation speed of the fan can just realize the constant of battery discharging electric current.
As shown in figure 3-2, its upper end is 2 electrodes to PTC resistor profile used in technical solution of the present invention, can be after short circuit
The positive pole of direct current is accessed, the other end is a pole, can access the negative pole of direct current.600V is reached as high as by design work voltage
(exchange), power is up to 4.5kW.
Fig. 3-3 is the theory diagram that technical solution of the present invention Battery Constant Current Discharging Device constant-current discharge is realized.Pass through original
When reason block diagram can be seen that batteries electric discharge, discharge current size is set by " constant current value selection knob ", control circuit leads to
The position of judgement " constant current value select button " is crossed, it is determined that the voltage class and discharge current of electric discharge, set discharge current benchmark, it is defeated
Enter the in-phase end to error amplifier, while controller will control the corresponding solid-state relay grid control pole electricity of respective amount
Pressure is set as that high level is opened, and starts to discharge to batteries.It is serially connected in the electric current in batteries electric discharge negative loop
Discharge current signal is changed into voltage signal by transformer, sends into the end of oppisite phase of error amplifier.What current transformer was detected
After difference between current value and constant current a reference value is adjusted through PI, control is applied to the voltage on DC fan, so as to change straight
The rotating speed of flow fan；After rotation speed of the fan changes, the temperature of PTC sensitive ceramic resistor spreader surfaces changes therewith, PTC temperature-sensitives pottery
The dissipated power of porcelain resistance also changes therewith, and discharge current also just changes；When discharge current and close setting electric current, wind
Fan electric power output voltage no longer changes, and now discharge current keeps dynamic stability.Breaker is for protecting PTC resistor branch road to go out
Existing short circuit or overload phenomenon.
In order to preferably make technical scheme clearly show, the present invention is made into one below in conjunction with the accompanying drawings
Walk explanation.
A kind of Battery Constant Current Discharging Device 1 as shown in Figure 4, suitable for battery discharging loop, including：Resistance circuit 10
And control circuit 11.
Shown resistance circuit 10 mainly includes PTC resistor 100, resistance switch 101 and the fan in battery discharging loop
Component 102；Above-mentioned device constitutes the discharge portion in battery discharging loop.
Specifically, the resistance switch is suitable to correspondence PTC resistor is accessed into the battery discharging loop simultaneously in closure
Will correspondence PTC resistor shorted on both ends when disconnecting.In a kind of example, resistance switch is suitable to one PTC resistor of control, and it is controlled
End is suitable to receive the first control signal, and turns off and close according to first control information, if resistance switch is closed,
The PTC resistor of correspondence connection is accessed to battery discharging loop, and now PTC resistor is used as discharge load；If resistance switch breaks
Open, then the PTC resistor for corresponding to connection is shorted, now corresponding PTC resistor does not turn into discharge load, and it is short to be discharged loop
Connect.In another example, resistance switch is suitable to control multiple PTC resistors, multiple PTC electricity that each resistance switch is controlled
Resistance accesses the control loop in parallel, and the control end of resistance switch is suitable to receive the first control signal, and according to described first
Control information is turned off and closed, if resistance switch is closed, and the PTC resistor of corresponding connection is accessed to battery in parallel
Discharge loop, PTC resistor now in parallel is used as discharge load；If resistance switch disconnects, PTC resistor in parallel is corresponded to short
Connect, now corresponding to PTC resistor in parallel does not turn into discharge load, and is discharged loop short circuit.
More specifically, the fan component is suitable to the PTC resistor that control has been accessed in the battery discharging loop
Temperature.According to the technical principle of technical solution of the present invention, the PTC resistor of technical solution of the present invention is by non-linear resistance material system
Into, its is specific including resistance can resistance increased dramatically with resistance temperature increase, its temperature coefficient up to 10~60%/DEG C (just
Temperature characterisitic).Technical solution of the present invention can utilize the control to PTC resistor surface temperature, to control access discharge loop load
Resistance.Technical solution of the present invention utilizes said fans component, the ventilation of PTC resistor spreader surface is adjusted, so as to keep
The dissipated power and battery tension of PTC resistor are changed by identical downward trend, reach the constant mesh for keeping discharge current
's.
In a kind of example, the air outlet of shown fan component 102 is just set to shown PTC resistor 100, its fan component
102 rotating speed can be modulated according to the position and institute's required airflow of air outlet, and specific rotation speed of the fan is controlled by the second control signal
System.In another example, shown fan component 102 can have multiple, respectively with the relatively shown PTC of the air outlet of different angles
One or more settings of resistance 100, then further according to the difference of fan component air outlet position, air force needed for calculating,
And carrying out the Design of Rotation of each fan, i.e., rotating speed needed for each fan has differences, but rotation speed of the fan can be by the second control
Signal control processed.
With continued reference to Fig. 4, shown control circuit 11 mainly includes：Current detecting end 111, resistance switch control end 112 and
Rotation speed of the fan control end 113.Wherein, the current detecting end 111 is adapted to detect for the electric discharge letter in the battery discharging loop
Number；Current detecting end 111 be able to can also be passed through by the discharge current in the structure replication battery discharging such as current mirror loop
Pressure point detection, obtains the discharge voltage in discharge loop, to detect the discharge signal.
More specifically, resistance switch control end 112 is suitable to export the of the resistance switch according to the discharge signal
One control signal is to control the open and-shut mode of the resistance switch.The set of first control signal can be each control institute
State the set of the voltage or current signal of the control end of resistance switch 101.In a kind of example, the input of discharge signal and the first control
The output of signal processed is closed-loop control relation, can be loaded according to PTC resistor the control planning between resistance and discharge signal come
Regulate and control the output of first control signal.It is in proportionate relationship between ohmic load in discharge signal and battery discharging loop,
And the set of the first control signal is the set of the control signal of some control resistance switch open and-shut modes, opened by counting resistance
The ohmic load resistance set in accessible loop under control is closed, the corresponding electric discharge letter produced of resistance in correspondence resistance set is calculated
Number size, the signal value of the first control signal can be derived in the set of the first control signal and can be produced between discharge signal
Corresponding relation.When the difference or difference ratio of the actually detected discharge signal arrived and a certain corresponding discharge signal of first control signal
Include in the range of predetermined accuracy, then the resistance switch control end 112 exports first control signal.The control circuit 11
Inside realize above-mentioned calculation process.
Similar, rotation speed of the fan control end 113 is also suitable for exporting the second of the fan component according to the discharge signal
Control signal is to control the rotating speed of the fan component.On the premise of fan component is a fan, the second control signal is
Control the curtage signal of the rotation speed of the fan.On the premise of fan component is multiple fans, the collection of the second control signal
Conjunction is the set for the curtage signal for controlling the rotation speed of the fan.
In a kind of example, the input of discharge signal and the output of the second control signal are also closed-loop control relation, can be with
The variation characteristic function of resistance and temperature is loaded according to PTC resistor, is adjusted by controlling rotation speed of the fan with controlling air quantity of fan
PTC resistor surface temperature, so as to regulate and control the second control letter based on the control planning between discharge signal and rotation speed of the fan
Number output.
According to different application scenarios, the production firm of the PTC resistor and variation characteristic function are differences, but the spy
Property function be set, be not belonging to the present embodiment restriction scheme category.Can be by counting under the different air quantity of fan, PTC resistor
In specific currents underlaying surface temperature, so that by controlling air quantity of fan, the certain loads resistance in loop is obtained, so as to keep back
Discharge current in road is constant.Control circuit 11 can derive the signal value of the second control signal and discharge signal and specific currents it
Between signal difference corresponding relation, when the actually detected discharge signal arrived be corresponding discharge signal, then control circuit 11 pass through
Compare the difference between the discharge signal and specific currents, export second control signal to adjust the air quantity of fan.
Above-mentioned calculation process is realized in the control circuit 11.
More preferred, the fan in the fan component uses DC fan.Correspond to a kind of more preferred of signal source
Selection mode be, the discharge signal be discharge current, first control signal be control voltage, it is described second control letter
Number it is fan blower fan supply voltage, the selection mode of above-mentioned signal source can make circuit more summary, also be easier to be believed
Comparison and output between number.
The PTC resistor of the present embodiment can be PTC sensitive ceramic resistors.The dissipated power of PTC sensitive ceramic resistors and its
The ventilation of spreader surface is relevant, the ventilation of the spreader surface by adjusting PTC sensitive ceramic resistors, keeps PTC heat
The dissipated power and battery tension of quick ceramic resistor are changed by identical downward trend, it is possible to remain discharge current
It is constant, and the control of ventilation can be adjusted by adjusting the rotating speed of DC fan, the control circuit passes through the second control
The output of signal, can actually be achieved in battery and puts using the second control signal as the fan power supply of control rotation speed of the fan
Electric current it is constant.
It should be noted that a kind of change case in the present embodiment refers to Fig. 5, a kind of battery constant current shown in it
Electric discharge device 2, includes：Resistance circuit 20, detection circuit 21, first control circuit 22 and second control circuit 23.Shown electricity
With the resistance circuit 10 in Fig. 4 unanimously, detection circuit 21 includes the function and structure of resistance circuit 20：Current detecting end 211, first
Control circuit 22 includes：Resistance switch control end 221, second control circuit 23 includes：Rotation speed of the fan control end 231.Detection electricity
Road 21, which is realized, exports the discharge signal at current detecting end 211, and the first control circuit 22 is realized in the resistance switch
Control end 221 exports first control signal, and the second control circuit 23 is realized exports institute in rotation speed of the fan control end 231
The second control signal is stated, the detection circuit 21, first control circuit 22 and second control circuit 23 assume responsibility for this implementation respectively
Control circuit 11 is detected the function of discharge signal, the function of the first control signal is produced based on discharge signal and based on electric discharge in example
Signal produces the function of secondary signal.The embodiment of technical solution of the present invention includes such a structure configuration mode.
In another change case of the present embodiment, the multiple PTC resistors of the resistance switch correspondence are set.With reference to Fig. 6, one
Kind of Battery Constant Current Discharging Device 3, its PTC resistor has multiple, i.e., including PTC resistor 1001,1002 ..., (n is more than 2 to 100n
Natural number), shown resistance switch also has multiple, that is, includes：Resistance switch 1011,1012 ..., 101m (m for more than 2 from
So count), Fig. 6 is based on Fig. 4.Involved battery includes discharge end and on the ground, the multiple PTC resistors of the resistance switch correspondence, Fig. 6
In illustrate resistance switch three PTC resistors of correspondence, can set as needed in other instances：One resistance switch
Two PTC resistors of correspondence, corresponding four PTC resistors of a resistance switch etc..One end of the PTC resistor respectively with the electric discharge
End connection, the other end is respectively connecting to corresponding resistance switch.
In the first application examples of the present embodiment, the resistance switch is solid-state relay, and the solid-state relay includes
Second input, the second output end and the second control end；Second input is connected with the multiple PTC resistor respectively, institute
State the second output end to connect over the ground, second control end is connected to first control signal；It is multiple in resistance switch
In the case of, first control signal can be parallel signal, and each of which position signal is suitable to the control of one resistance switch of control
End processed.
Under another change case of the present embodiment, as shown in fig. 7, a kind of Battery Constant Current Discharging Device 4, Fig. 7 is based on
Fig. 6, wherein the PTC resistor 1001,1002 ..., 100n one end respectively by selecting switch 131,132 ..., 13n and institute
The discharge end connection of battery is stated, the control circuit 11 also includes：Selecting switch control end 114, the selecting switch control
End 114 is suitable to export the 3rd control signal in battery discharging to control the open and-shut mode of the selecting switch.Specifically, institute
It can be switching tube to state selecting switch, and the switching tube includes first input end, the first output end and the first control end；Described first
Input is connected with the discharge end, and the first output end is connected with corresponding PTC resistor, and the first control end is connected to the 3rd control
Signal processed.In technical solution of the present invention, the selecting switch control end is arranged at every PTC resistor load branch, and with it is every
Root PTC resistor load branch is connected.Selecting switch control end can be dc circuit breaker, to protect branch, short-circuit or overload.
Under discharge condition, the 3rd control signal perseverance is in closure state for make the selecting switch.
Under another change case of the present embodiment, as shown in figure 8, a kind of Battery Constant Current Discharging Device 5, which show
A kind of specific implementation of the control circuit, Fig. 8 is based on Fig. 4, including：Resistance circuit 10 and control circuit 11 ', wherein：
Control circuit 11 ' include except including：Outside current detecting end 111, resistance switch control end 112 and rotation speed of the fan control end 113,
Also include：Current sensor 50, error amplifier 51 and pi regulator 52.
The current sensor 50 includes：Electric current senses input 501 and electric current inductive output end 502, the electric current sense
Input 501 is answered to be suitable to the discharge signal accessed in the battery discharging loop, the electric current inductive output end 502 is suitable to connect
Connect the current detecting end 111.
The error amplifier 51 includes：Anode input 511, negative terminal input 512 and error output 513.It is described
Pi regulator 52 includes：Adjust input 521 and regulation output end 522；The anode input 511 is connected to reference signal,
The negative terminal input 512 is connected to the current detecting end 111, and the regulation input 521 is connected to the error output
End 513, the regulation output end 522 is connected to the rotation speed of the fan control end 113.
In this example, the reference signal can be the specific currents, i.e., for foregoing poor with discharge signal progress
The electric current that value compares.The pi regulator 52 is a kind of linear controller, and it is sensed according to the specific currents and actual current
The discharge current of the detection output of device 50 constitutes control deviation, and the ratio (P) of deviation and integration (I) are made up of linear combination and controlled
Amount processed, the controlled quentity controlled variable is used for the generation for setting the second control signal described in control circuit, so that for controlling object rotation speed of the fan.
The linear combination constitutes controlled quentity controlled variable in the following way：Input the characterisitic function shown between temperature and resistance of PTC resistor
And the current differential that control deviation is obtained, second control signal of output needed for assessing.Due to showing for known PTC resistor
Characterisitic function between temperature and resistance, then can set the linear combination for stating pi regulator 52, for wanting for characterisitic function
Ask if linear, can use in Fig. 3 on one section of characteristic function linear in PTC resistor characteristic curve function.
Under another change case of the present embodiment, as shown in figure 9, a kind of Battery Constant Current Discharging Device 6, which show
Another specific implementation of the control circuit, Fig. 9 is based on Fig. 8, wherein, control circuit 11 " also includes：Power controller
60, the regulation output end 522 is connected to the rotation speed of the fan control end 113, Power Control by the power controller 60
The controlled quentity controlled variable that device 60 can export regulation output end 522 obtains meeting the magnitude of voltage of fan control requirement through power conversion, so that
Smoothly control fan component.
Under another change case of the present embodiment, as shown in Figure 10, a kind of Battery Constant Current Discharging Device 7, Tu10Ji
In Fig. 4, which show the control circuit 113Another specific implementation, the control circuit 113Also include：Driving electricity
Road 70, the drive circuit 70 includes drive output 71, and the drive output 71 is connected to the resistance switch control end
112.The externally connected select button of the drive circuit 71, and suitable for being discharged described in the position judgment of the outside select button
Signal is with the driving control signal of resistance switch control end described in the output control of drive output 71.In fact, Figure 10
Shown Battery Constant Current Discharging Device 7 is provided can switch the means of opening and closing according to external control signal come modulated resistance.
Battery Constant Current Discharging Device 7 according to Figure 10, outside select button can be " constant current value selection knob ".
When batteries are discharged, discharge current size is set by " constant current value selection knob ", control circuit is by judging " constant current value
The position of select button ", it is determined that the voltage class and discharge current of electric discharge, set discharge current benchmark, is input to error amplification
The in-phase end of device, while being high level by corresponding solid-state relay gate voltage set, starts to discharge to batteries.
Discharge current signal is changed into voltage signal by the current transformer being serially connected in batteries electric discharge negative loop, sends into error
The end of oppisite phase of amplifier.Regulation of the difference through PI controllers between current value and constant current a reference value that current transformer is detected
Afterwards, control is applied to the voltage on DC fan, so as to change the rotating speed of DC fan；After rotation speed of the fan changes, PTC temperature-sensitives pottery
The temperature on porcelain resistive dissipation device surface changes therewith, and the dissipated power of PTC sensitive ceramic resistors also changes therewith, discharge current
Just change；When discharge current and close setting electric current, fan power supply output voltage no longer changes, and now discharge current is protected
Hold dynamic stability.
Figure 11 is the main circuit diagram of technical solution of the present invention batteries constant-current discharging device first application examples, by quickly connecting
Connect device, main circuit breaker (QF01, QF02), branch road dc circuit breaker (QF1-1, QF1-2, QF1-3 ..., QF26-1, QF26-2,
QF26-3), PTC sensitive ceramic resistors (RT1-1, RT1-2, RT1-3 ..., RT26-1, RT26-2, RT26-3) and solid-state relay
Device (Q1 ..., Q13, Q4 ..., Q26) etc. part constitute.Wherein, the positive and negative cable of batteries is disconnected by quick connector, master
Road device is connected in main positive negative busbar, and main positive negative busbar is divided into left and right two-way busbar again.Batteries constant-current discharging device is designed with
78 PTC sensitive ceramic resistors, are divided into two rows, often arrange 39, are separately mounted to the both sides of electric discharge device；Every PTC temperature-sensitives pottery
The rated power of porcelain resistance is 4500W (wind speed is 4m/s).For control discharge current, every 3 PTC sensitive ceramic resistors are respectively provided with
1 solid-state relay.When needing access varying number load, corresponding solid-state relay will work.Every load branch
Series direct current breaker is to protect branch, short-circuit or overload.When being discharged, control circuit controls the solid-state of varying number
Relay is worked, and the PTC sensitive ceramic resistors of its branch road are attempted by between positive negative busbar by corresponding solid-state relay conducting, at this moment
PTC sensitive ceramic resistors work, and convert electrical energy into heat energy.The wind speed of circuit regulation DC fan is controlled to pass through to change simultaneously
The air quantity on PTC sensitive ceramic resistors surface.Solid-state relay carries out coarse adjustment, and blower fan carries out fine tuning, and the two, which is combined with each other, makes main electricity
The constant current hold on road.
With reference to a kind of application structure that circuit is controlled in Figure 12, wherein, control circuit is by circuit breaker Q F08, fan power
U1, control power supply U2, Human machine interface, control unit MCU compositions.It is straight that wherein fan power U1, which is used for producing 48V direct currents,
Flow fan provides power supply, and its input can be external alternating current 220V power frequency electric, it is possible to use the direct current of batteries.Control
Power supply U2 is DC/DC modules, is that the direct current for providing batteries is changed into 24V direct currents for man-machine interface and control unit work
Make.Control unit MCU is used for controlling opening and turning off for solid-state relay, additionally detects discharge current and voltage, passes through inspection
Survey electric current to control the rotating speed of DC fan, judge whether batteries electric discharge reaches setting value by detecting voltage.It is man-machine
Interface is touching display screen, the discharge parameter of battery can be selected by the interface, and sets discharge off time, electric discharge
Final voltage and discharge capacity.
In the application example, batteries constant-current discharging device is provided with 32 direct current speed-adjustable axial flow blowers altogether, from storage
The upper cover plate of battery pack constant-current discharging device is looked in, it can be seen that 32 DC fans are divided equally to be put installed in batteries constant current
Both sides inside electric installation electric discharge device, all DC fans are all arranged on fan installation plate.
The effect of DC fan is to maintain the stabilization of the temperature in certain point on PTC sensitive ceramic resistors surface；Discharging
Cheng Zhong, by adjusting DC fan power supply magnitude of voltage, changes the rotating speed of DC fan, regulation PTC sensitive ceramic resistors dissipate
The ventilation on hot device surface, so as to change the heating power of PTC sensitive ceramic resistors, makes discharge current stable.
DC solid-state relay is used to control PTC sensitive ceramic resistors to access main circuit, and it is a kind of non-contact type switch,
Between PTC sensitive ceramic resistors and blower fan.Every batteries constant-current discharging device configures 26 DC solid relays
Device, DC solid-state relay is divided into 10 groups, is controlled by the driving interface of controller.DC solid-state relay indoor design has
Short-circuit protection circuit, when short trouble occur in PTC sensitive ceramic resistors, DC solid-state relay can occur in branch breaker
Time before protection carries out moment shut-off, prevents puncturing for solid-state relay.
The specific embodiment of the present invention is described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow
Ring the substantive content of the present invention.
Claims (10)
1. a kind of Battery Constant Current Discharging Device, suitable for battery discharging loop, it is characterised in that including：Resistance circuit and control
Circuit processed；
The resistance circuit includes：PTC resistor, resistance switch and fan component；
The resistance switch is suitable in closure correspondence PTC resistor accessing the battery discharging loop and will be right when disconnecting
PTC resistor shorted on both ends is answered, the fan component is suitable to the temperature for the PTC resistor that control has been accessed in the battery discharging loop
Degree；
The control circuit includes：Current detecting end, resistance switch control end and rotation speed of the fan control end；
The current detecting end is adapted to detect for the discharge signal in the battery discharging loop；
The resistance switch control end is suitable to export the first control signal of the resistance switch to control according to the discharge signal
Make the open and-shut mode of the resistance switch；
The rotation speed of the fan control end is suitable to export the second control signal of the fan component to control according to the discharge signal
Make the rotating speed of the fan component.
2. Battery Constant Current Discharging Device as claimed in claim 1, it is characterised in that the battery includes discharge end and right
Ground terminal, the multiple PTC resistors of the resistance switch correspondence, one end of the PTC resistor is connected with the discharge end respectively, the other end
It is respectively connecting to corresponding resistance switch.
3. Battery Constant Current Discharging Device as claimed in claim 2, it is characterised in that one end of the PTC resistor passes through choosing
Select switch to be connected with the discharge end, the control circuit also includes：Selecting switch control end, the selecting switch control end is fitted
The 3rd control signal is exported when in battery discharging to control the open and-shut mode of the selecting switch.
4. Battery Constant Current Discharging Device as claimed in claim 3, it is characterised in that the selecting switch is switching tube, institute
Stating switching tube includes first input end, the first output end and the first control end；The first input end is connected with the discharge end,
First output end is connected with corresponding PTC resistor, and the first control end is connected to the 3rd control signal.
5. Battery Constant Current Discharging Device as claimed in claim 2, it is characterised in that the resistance switch is solid-state relay
Device, the solid-state relay includes the second input, the second output end and the second control end；Second input respectively with institute
Multiple PTC resistor connections are stated, second output end is connected over the ground, second control end is connected to the first control letter
Number.
6. Battery Constant Current Discharging Device as claimed in claim 1, it is characterised in that the control circuit also includes：Electric current
Sensor, error amplifier and pi regulator；
The current sensor includes electric current and senses input and electric current inductive output end, and the electric current sensing input is suitable to connect
Enter the discharge signal in the battery discharging loop, the electric current inductive output end is adapted to the current detecting end；
The error amplifier includes：Anode input, negative terminal input and error input, the pi regulator include：Adjust
Save input and regulation output end；The anode input is connected to reference signal, and the negative terminal input is connected to the electricity
Test side is flowed, the regulation input is connected to the error input, and the regulation output end is connected to the rotation speed of the fan
Control end.
7. Battery Constant Current Discharging Device as claimed in claim 6, it is characterised in that the control circuit also includes：Power
Controller, the regulation output end is connected to the rotation speed of the fan control end by the power controller.
8. the Battery Constant Current Discharging Device as described in claim 1,6 or 7, it is characterised in that the fan component includes：Directly
Flow fan.
9. Battery Constant Current Discharging Device as claimed in claim 1, it is characterised in that the discharge signal is discharge current,
First control signal is control voltage, and second control signal is fan blower fan supply voltage.
10. Battery Constant Current Discharging Device as claimed in claim 1, it is characterised in that the control circuit also includes：Driving
Circuit, the drive circuit includes drive output, and the drive output is connected to the resistance switch control end；
The externally connected select button of drive circuit, and suitable for the letter that discharged described in the position judgment of the outside select button
Number to export first control signal in the drive output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710256620.5A CN106992565B (en) | 2017-04-19 | 2017-04-19 | Constant-current discharging device for storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710256620.5A CN106992565B (en) | 2017-04-19 | 2017-04-19 | Constant-current discharging device for storage battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106992565A true CN106992565A (en) | 2017-07-28 |
| CN106992565B CN106992565B (en) | 2023-08-04 |
Family
ID=59415296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710256620.5A Active CN106992565B (en) | 2017-04-19 | 2017-04-19 | Constant-current discharging device for storage battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106992565B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108121329A (en) * | 2018-02-14 | 2018-06-05 | 中国人民解放军第四三二八工厂 | Supply vehicle measurement and control system, method, supply vehicle, computer system and medium |
| CN112103584A (en) * | 2019-06-17 | 2020-12-18 | 株式会社牧田 | Battery-powered portable tool |
| CN113675909A (en) * | 2021-07-07 | 2021-11-19 | 深圳奥特迅电力设备股份有限公司 | Wide-range high-power discharge device and method |
| CN112103584B (en) * | 2019-06-17 | 2024-06-04 | 株式会社牧田 | Battery powered portable tool |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5998973A (en) * | 1998-03-20 | 1999-12-07 | Tsai; Hung-Li | Method and device for automatically switching and adjusting the load of a battery discharger |
| CN2636253Y (en) * | 2003-07-01 | 2004-08-25 | 烟台东方电子玉麟电气有限公司 | Discharge tester for accumulator |
| CN101867207A (en) * | 2010-06-11 | 2010-10-20 | 大连市旅顺电力电子设备有限公司 | Constant-current discharging device of electric storage battery |
| CN201867480U (en) * | 2010-11-25 | 2011-06-15 | 浙江三辰电器有限公司 | Intelligent storage battery discharging instrument |
| CN102097847A (en) * | 2011-03-28 | 2011-06-15 | 国电南瑞科技股份有限公司 | Shunt-wound rechargeable battery heavy constant current discharging device |
| CN202103140U (en) * | 2011-06-16 | 2012-01-04 | 重庆东电通信技术有限公司 | Multifunctional intelligent maintenance device for lead-acid storage battery |
| CN104362402A (en) * | 2014-09-19 | 2015-02-18 | 杭州浙畅电力设备有限公司 | Stepped constant current charging-discharging method |
| CN204349551U (en) * | 2015-02-10 | 2015-05-20 | 潍坊凯纳电气科技有限公司 | A kind of battery discharging instrument |
| CN204651952U (en) * | 2015-04-02 | 2015-09-16 | 中国能源建设集团广东省电力设计研究院有限公司 | A kind of storage battery big current constant-current discharging device |
| CN205015773U (en) * | 2015-08-26 | 2016-02-03 | 重庆会凌电子新技术有限公司 | Big dynamic current collection system of high accuracy and constant voltage constant current supply system thereof |
| CN106058335A (en) * | 2016-07-04 | 2016-10-26 | 北京嘉捷恒信能源技术有限责任公司 | Battery discharge device and battery discharge method |
-
2017
- 2017-04-19 CN CN201710256620.5A patent/CN106992565B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5998973A (en) * | 1998-03-20 | 1999-12-07 | Tsai; Hung-Li | Method and device for automatically switching and adjusting the load of a battery discharger |
| CN2636253Y (en) * | 2003-07-01 | 2004-08-25 | 烟台东方电子玉麟电气有限公司 | Discharge tester for accumulator |
| CN101867207A (en) * | 2010-06-11 | 2010-10-20 | 大连市旅顺电力电子设备有限公司 | Constant-current discharging device of electric storage battery |
| CN201867480U (en) * | 2010-11-25 | 2011-06-15 | 浙江三辰电器有限公司 | Intelligent storage battery discharging instrument |
| CN102097847A (en) * | 2011-03-28 | 2011-06-15 | 国电南瑞科技股份有限公司 | Shunt-wound rechargeable battery heavy constant current discharging device |
| CN202103140U (en) * | 2011-06-16 | 2012-01-04 | 重庆东电通信技术有限公司 | Multifunctional intelligent maintenance device for lead-acid storage battery |
| CN104362402A (en) * | 2014-09-19 | 2015-02-18 | 杭州浙畅电力设备有限公司 | Stepped constant current charging-discharging method |
| CN204349551U (en) * | 2015-02-10 | 2015-05-20 | 潍坊凯纳电气科技有限公司 | A kind of battery discharging instrument |
| CN204651952U (en) * | 2015-04-02 | 2015-09-16 | 中国能源建设集团广东省电力设计研究院有限公司 | A kind of storage battery big current constant-current discharging device |
| CN205015773U (en) * | 2015-08-26 | 2016-02-03 | 重庆会凌电子新技术有限公司 | Big dynamic current collection system of high accuracy and constant voltage constant current supply system thereof |
| CN106058335A (en) * | 2016-07-04 | 2016-10-26 | 北京嘉捷恒信能源技术有限责任公司 | Battery discharge device and battery discharge method |
Non-Patent Citations (1)
| Title |
|---|
| 杨明欣 等: ""全自动蓄电池容量测试仪的设计"", 《仪器仪表学报》, vol. 29, no. 4, pages 140 - 143 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108121329A (en) * | 2018-02-14 | 2018-06-05 | 中国人民解放军第四三二八工厂 | Supply vehicle measurement and control system, method, supply vehicle, computer system and medium |
| CN108121329B (en) * | 2018-02-14 | 2024-04-12 | 中国人民解放军第四三二八工厂 | Power supply vehicle data measurement and control system and method, power supply vehicle, computer system and medium |
| CN112103584A (en) * | 2019-06-17 | 2020-12-18 | 株式会社牧田 | Battery-powered portable tool |
| US11955615B2 (en) | 2019-06-17 | 2024-04-09 | Makita Corporation | Battery-powered portable tool |
| CN112103584B (en) * | 2019-06-17 | 2024-06-04 | 株式会社牧田 | Battery powered portable tool |
| CN113675909A (en) * | 2021-07-07 | 2021-11-19 | 深圳奥特迅电力设备股份有限公司 | Wide-range high-power discharge device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106992565B (en) | 2023-08-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106992565A (en) | A kind of Battery Constant Current Discharging Device | |
| CN203586455U (en) | Photovoltaic air conditioning system | |
| CN104360697A (en) | Power-temperature control and detection device for IGBT (insulated gate bipolar transistor) modules of three-phase inverter system | |
| CN106711978B (en) | Current foldback circuit, method and the air conditioner of adjustable IPM module | |
| CN206164112U (en) | A attenuating device is inductiond to anti current potential for photovoltaic power generation system | |
| CN105553391A (en) | Photovoltaic energy storage battery power generation system and control method | |
| CN107493057A (en) | The electric regulating system and method for a kind of potential induction attenuation of photovoltaic generation | |
| CN105003454B (en) | Draught fan control device and control method for improving reliable operation of draught fan | |
| KR101222772B1 (en) | Method and system for power controlling electric range having a large number of heater | |
| CN205674887U (en) | A kind of electrokinetic cell system | |
| CN107345978A (en) | The packaged type of power plant or intelligent substation controls power supply and control method | |
| CN206759089U (en) | A kind of Battery Constant Current Discharging Device | |
| CN105650730A (en) | Heat balance adjusting method and intelligent monitoring system based on heat balance adjusting method | |
| CN207967253U (en) | Battery pack low-temperature heating device, battery module and vehicle | |
| CN201267041Y (en) | Emergency illuminator | |
| CN207442731U (en) | A kind of electrical regulating system of the potential induction attenuation of photovoltaic generation | |
| CN207967914U (en) | A kind of voltage protection of photovoltaic parallel in system | |
| CN107591282B (en) | The control device and method of relay coil | |
| CN107346828A (en) | Fuel cell enters gas processing system | |
| CN205829177U (en) | A kind of low-voltage dynamic reactive power compensation based on FPGA | |
| CN206945802U (en) | A kind of packaged type control power supply in power plant or intelligent substation | |
| CN207069407U (en) | A kind of three-phase imbalance device | |
| CN207021700U (en) | For controlling device, the blower fan system of permanent magnet direct-drive blower fan low voltage crossing | |
| CN214581777U (en) | Solar photovoltaic water heater | |
| CN105022433A (en) | A ventilation and dehumidification type switch cabinet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Min Inventor after: Hou Junjie Inventor after: Tian Wanzhu Inventor after: Cheng Wenqiang Inventor after: Feng Lichen Inventor after: Xing Zhoujie Inventor before: Cheng Wenqiang Inventor before: Hou Junjie Inventor before: Tian Wanzhu Inventor before: Wang Min Inventor before: Feng Lichen Inventor before: Xing Zhoujie |
|
| CB03 | Change of inventor or designer information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |