CN208367184U - A kind of charging and discharging lithium battery test device - Google Patents
A kind of charging and discharging lithium battery test device Download PDFInfo
- Publication number
- CN208367184U CN208367184U CN201821036413.5U CN201821036413U CN208367184U CN 208367184 U CN208367184 U CN 208367184U CN 201821036413 U CN201821036413 U CN 201821036413U CN 208367184 U CN208367184 U CN 208367184U
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- lithium battery
- charging
- power transistor
- discharging
- main control
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 59
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 59
- 238000007599 discharging Methods 0.000 title claims abstract description 26
- 238000012360 testing method Methods 0.000 title claims abstract description 22
- 238000001514 detection method Methods 0.000 claims abstract description 18
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 4
- 238000007689 inspection Methods 0.000 claims 1
- 238000011160 research Methods 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 abstract description 2
- 238000004891 communication Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The utility model discloses a kind of charging and discharging lithium battery test device, is mainly made of DSP main control chip, charging and discharging lithium battery control circuit and lithium battery information acquisition circuit；Charging and discharging lithium battery control circuit includes power transistor Q1-Q2, inductance L, relay switch and drive circuit module；Lithium battery information acquisition circuit includes current detection module and voltage detection module.Charging and discharging currents needed for the utility model generates research by programming and the customized operating condition of corresponding charge and discharge time carry out charge-discharge test test to lithium battery, it is achievable that the measurement of lithium battery Specifeca tion speeification is identified with its equivalent-circuit model charge-discharge parameter, while the verifying of lithium battery SOC algorithm for estimating and exploitation can be carried out again.
Description
Technical field
The utility model relates to technical field of battery management, and in particular to a kind of charging and discharging lithium battery test device.
Background technique
With the development of new energy technology, lithium battery applications and research are more and more extensive and deep, lithium battery performance parameter
Test seems particularly significant.Pass through cyclic charging and discharging test, lithium battery performance major parameter such as charge/discharge capacity, cycle life
It can be obtained with characteristic parameters such as efficiency for charge-discharges.There are many professional battery test systems both at home and abroad currently on the market, it can be complete
At the test of lithium battery performance, but its price is extremely expensive, and operation and maintenance is costly, limits in laboratory research battery
The application of aspect.Domestic some relatively cheap cell testers of price there are problems that having a single function again, and being unable to satisfy research needs
It wants.So seeking cheap, vdiverse in function, accurate stable lithium battery cycle charge-discharge testing device has become current research
Target.
Utility model content
The utility model provides a kind of charging and discharging lithium battery test device, can be realized charging and discharging lithium battery test.
To solve the above problems, the utility model is achieved through the following technical solutions:
A kind of charging and discharging lithium battery test device, mainly by DSP main control chip, charging and discharging lithium battery control circuit and lithium electricity
Pond information acquisition circuit composition；Charging and discharging lithium battery control circuit include power transistor Q1-Q2, inductance L, relay switch and
Drive circuit module；Lithium battery information acquisition circuit includes current detection module and voltage detection module；The 3 of DSP main control chip
3 input terminals of a output end connection drive circuit module, 3 output ends of drive circuit module are separately connected relay switch
Control terminal, power transistor Q1 grid and power transistor Q2 grid；The drain electrode of power transistor Q1 connects relay
The common of switch；The drain electrode of the source electrode of power transistor Q1 and power transistor Q2 simultaneously with one end phase for the inductance L that connects
It connects, the other end of inductance L connects the anode of lithium battery to be measured via current detection module；Voltage detection module is attempted by lithium to be measured
On the positive and negative anodes of battery；The cathode of the source electrode of power transistor Q2 and lithium battery to be measured ground connection；The charging contact of relay switch
External dc regulated power supply is connected, the discharge contact of relay switch connects external adjustable electronic load.
In above scheme, charging and discharging lithium battery control circuit still further comprises resistance R1-R2, electric discharge indication LED and fills
Electric indication LED；After resistance R2 and charging instruction LED series connection, the wherein charging contact of one end and relay switch is connected, the other end
Ground connection；After resistance R1 and electric discharge indication LED are connected, the discharge contact of one end and relay switch is connected, other end ground connection.
In above scheme, DSP main control chip is connect via communication module with computer.
In above scheme, DSP main control chip includes the DSP main control chip of model TMS320F28335.
Compared with prior art, the utility model external device device (such as Switching Power Supply, adjustable stabilized voltage supply, adjustable electric
Son load, communication module and computer etc.) it is standard universal device or instrument and equipment, it can voluntarily buy replacement assembling, cost
It can rationally be controlled according to own situation, be not required to look for professional person if any that voluntarily can also buy or replace when some external equipment damages
It oneself can be carried out easy to maintain time saving, while price economy is cheap, and maintenance cost time cost is also low, small in size, carry
Conveniently, place is not accounted for, general experimental site can be easy to use.
Detailed description of the invention
Fig. 1 is the system block diagram of charging and discharging lithium battery test device.
Fig. 2 is charging and discharging lithium battery test device and external equipment circuit diagram.
Specific embodiment
For the purpose of this utility model, technical solution and advantage is more clearly understood, below in conjunction with specific example, and join
According to attached drawing, the utility model is further described.
Referring to Fig. 1 and Fig. 2, a kind of charging and discharging lithium battery test device, mainly by DSP Master control chip circuit, lithium battery
Charge-discharge control circuit, lithium battery information acquisition circuit composition.Wherein DSP main control chip mainly includes based on model
The peripheries such as the DSP main control chip and power supply of TMS320F28335, clock, reset, JTAG artificial debugging interface, external storage
The exploitation plate module of circuit composition.Charging and discharging lithium battery control circuit includes two power transistors of Q1, Q2, an inductance L, and one
A relay switch, two resistance of an electric discharge indication LED and charging instruction a LED, R1, R2, a drive circuit module.
Lithium battery information acquisition circuit includes current detection module and voltage detection module.
Can external lithium battery, adjustable D. C regulated, adjustable electronic load, device device power switch power supply filled
Electric discharge work.External device (ED) device power switch power supply connects DSP main control chip, drive circuit module, relay switch, electric current
Detection module and voltage detection module.3 input terminals of 3 output ends connection drive circuit module of DSP main control chip, driving
3 output ends of circuit module are separately connected the grid and power transistor of the control terminal of relay switch, power transistor Q1
The grid of Q2.The common of the drain electrode connection relay switch of power transistor Q1.The source electrode and power of power transistor Q1
The drain electrode of transistor Q2 connects with the one end for the inductance L that connects simultaneously, and the other end of inductance L connects to be measured via current detection module
The anode of lithium battery.Voltage detection module is attempted by the positive and negative anodes of lithium battery to be measured.The source electrode of power transistor Q2 and to be measured
The cathode of lithium battery is grounded.The charging contact c connection external dc regulated power supply of relay switch, the electric discharge touching of relay switch
The external adjustable electronic load of point d connection.After resistance R2 and charging instruction LED series connection, the wherein charging of one end and relay switch
Contact c connection, other end ground connection.After resistance R1 and electric discharge indication LED are connected, the discharge contact d of one end and relay switch connects
It connects, other end ground connection.
DSP main control chip connects computer via communication module.Realization pair is interacted by communication module and computer
Being programmed into for DSP main control chip generates customized charging and discharging currents operating condition and the exploitation of lithium battery SOC algorithm online verification, passes through
Acquisition information and proof of algorithm result can be saved on computer by serial communication mode.
Charging current operating conditions principle: when selecting charging measurement, relay switch will be closed the contact c, charging instruction
LED is lit, and indicates that lithium battery prepares charging, adjustable D. C regulated, lithium battery and charge and discharge device have been formed into a loop.It can
Tuning DC voltage-stabilized source is adjusted to constant voltage mode, and DSP generates PWM wave and makes Q1 power brilliant by the drive circuit module input end a
The conducting of body pipe, and the end b input low level ends Q2 power transistor, electric current can be from D.C. regulated power supply to by electricity at this time
Sense, current sensor to lithium battery direction move, and device starts as lithium battery charging.Current detection module is by charging current at this time
Signal, into DSP main control chip, controls Q1 power transistor by the duty that PI algorithm adjusts PWM wave as feed back input with this
Conducting realizes control charging current with cutoff frequency and the purpose for being finally reached target charge current.
Discharge current operating conditions principle: when selecting discharge test, relay switch will be closed the contact d, electric discharge instruction
LED is lit, and indicates that lithium battery prepares electric discharge, adjustable electronic load, lithium battery and charge and discharge device forming circuit.Adjustable electronic
Load is adjusted to permanent resistance mode, and DSP generates PWM wave and by the drive circuit module input end b Q2 power transistor is connected, and
The end a input low level ends Q1 power transistor, at this time electric current can from lithium battery by current detection module, inductance to adjustable
The movement of electronic load direction, device start as lithium battery electric discharge.Current detection module is using discharge current signal as feedback at this time
It is input in DSP main control chip, the duty of PWM wave is adjusted by PI algorithm, Q2 power transistor conducting frequency and cut-off are controlled with this
Rate is to realize control discharge current and be finally reached the purpose of discharge target electric current.
It should be noted that although the above embodiment described in the utility model be it is illustrative, this is not to this
The limitation of utility model, therefore the utility model is not limited in above-mentioned specific embodiment.The utility model is not being departed from
In the case where principle, the other embodiment that all those skilled in the art obtain under the enlightenment of the utility model is accordingly to be regarded as
Within the protection of the utility model.
Claims (4)
1. a kind of charging and discharging lithium battery test device, characterized in that mainly control electricity by DSP main control chip, charging and discharging lithium battery
Road and lithium battery information acquisition circuit composition；Charging and discharging lithium battery control circuit includes power transistor Q1-Q2, inductance L, relay
Device switch and drive circuit module；Lithium battery information acquisition circuit includes current detection module and voltage detection module；
3 input terminals of 3 output ends connection drive circuit module of DSP main control chip, 3 output ends of drive circuit module
It is separately connected the grid of the control terminal of relay switch, the grid of power transistor Q1 and power transistor Q2；Power transistor
The common of the drain electrode connection relay switch of Q1；The drain electrode of the source electrode and power transistor Q2 of power transistor Q1 simultaneously with
Connect one end of inductance L connects, and the other end of inductance L connects the anode of lithium battery to be measured via current detection module；Voltage inspection
Module is surveyed to be attempted by the positive and negative anodes of lithium battery to be measured；The cathode of the source electrode of power transistor Q2 and lithium battery to be measured ground connection；After
The charging contact of electric switch connects external dc regulated power supply, and it is negative that the discharge contact of relay switch connects external adjustable electronic
It carries.
2. a kind of charging and discharging lithium battery test device according to claim 1, characterized in that charging and discharging lithium battery control electricity
Road still further comprises resistance R1-R2, electric discharge indication LED and charging instruction LED；After resistance R2 and charging instruction LED series connection, one
End is connect with the wherein charging contact of relay switch, other end ground connection；Resistance R1 and electric discharge indication LED series connection after, one end with
The discharge contact of relay switch connects, other end ground connection.
3. a kind of charging and discharging lithium battery test device according to claim 1, characterized in that DSP main control chip is via logical
News module is connect with computer.
4. a kind of charging and discharging lithium battery test device according to claim 1, characterized in that DSP main control chip includes type
Number be TMS320F28335 DSP main control chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821036413.5U CN208367184U (en) | 2018-07-02 | 2018-07-02 | A kind of charging and discharging lithium battery test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821036413.5U CN208367184U (en) | 2018-07-02 | 2018-07-02 | A kind of charging and discharging lithium battery test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208367184U true CN208367184U (en) | 2019-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821036413.5U Expired - Fee Related CN208367184U (en) | 2018-07-02 | 2018-07-02 | A kind of charging and discharging lithium battery test device |
Country Status (1)
| Country | Link |
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| CN (1) | CN208367184U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490368A (en) * | 2018-07-02 | 2018-09-04 | 桂林电子科技大学 | A kind of charging and discharging lithium battery test device and method |
| CN110231524A (en) * | 2019-05-30 | 2019-09-13 | 江苏斯菲尔电气股份有限公司 | BCS test macro |
| CN111965553A (en) * | 2019-05-20 | 2020-11-20 | Oppo广东移动通信有限公司 | Battery testing system and method |
-
2018
- 2018-07-02 CN CN201821036413.5U patent/CN208367184U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490368A (en) * | 2018-07-02 | 2018-09-04 | 桂林电子科技大学 | A kind of charging and discharging lithium battery test device and method |
| CN111965553A (en) * | 2019-05-20 | 2020-11-20 | Oppo广东移动通信有限公司 | Battery testing system and method |
| CN111965553B (en) * | 2019-05-20 | 2021-10-01 | Oppo广东移动通信有限公司 | Battery testing system and method |
| CN110231524A (en) * | 2019-05-30 | 2019-09-13 | 江苏斯菲尔电气股份有限公司 | BCS test macro |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190111 |
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| CF01 | Termination of patent right due to non-payment of annual fee |