CN109390987A - Battery test system and the method for controlling battery test system - Google Patents
Battery test system and the method for controlling battery test system Download PDFInfo
- Publication number
- CN109390987A CN109390987A CN201710663224.4A CN201710663224A CN109390987A CN 109390987 A CN109390987 A CN 109390987A CN 201710663224 A CN201710663224 A CN 201710663224A CN 109390987 A CN109390987 A CN 109390987A
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- CN
- China
- Prior art keywords
- circuit module
- test system
- battery
- discharge
- battery pack
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- 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.)
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Classifications
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- 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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0024—Parallel/serial switching of connection of batteries to charge or load circuit
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Secondary Cells (AREA)
Abstract
The present invention provides a kind of battery test system and the methods for controlling battery test system comprising charging circuit module and discharging function module: charging circuit module is for charging to the battery pack being connected in series by more piece single battery；Discharging function module is for discharging to battery pack, control circuit module of the present invention issues control signal according to the reference voltage value of feedback signal and reference circuit offer in feed circuit module, discharge circuit module is set to keep the work of normal table, discharge circuit module is controlled by control circuit module, and realization discharges to battery pack with constant electric current；The phenomenon that present invention makes power battery be not in over-discharge failure and lead to pole plate passivation, capacity attenuation, to greatly enhance the safety and useful life of battery.
Description
Technical field
The present invention relates to the discharging function circuit of charger more particularly to a kind of chargings of the power battery of belt discharge function
Device.
Background technique
It when using power recharge battery, generally requires for several batteries to be together in series and forms battery pack, make its output
Required sufficiently large voltage.The charger that existing a variety of pairs of power recharge batteries charge currently on the market, but this
A little chargers cannot ensure that battery pack is discharged with constant current all without discharging function during discharge, so very
Be easy the phenomenon that making battery pack over-discharge occur and leading to its pole plate passivation, capacity attenuation, it is difficult to ensure that the safety of battery pack and
Useful life, there is also very big defects in discharging function this link for the charger of current driving force battery.
Summary of the invention
For above-mentioned the problems of the prior art, the purpose of the present invention is to provide a kind of power batteries that preferably solves to put
How to guarantee that battery pack can be discharged with a specific constant current value when electric, making power battery is not in over-discharge failure
Scheme.
In order to solve the above technical problems, the present invention provides a kind of chargers of the power battery of belt discharge function, including
Charging circuit module, for charging to the battery pack being connected in series by more piece single battery；Discharging function module, is used for
It discharges battery pack, the discharging function module includes:
Reference circuit module, for providing some specific voltage value to control circuit module, this voltage value can be by adjusting electricity
Road parameter is completed；
Feed circuit module provides one to control circuit module by being sampled to the electric current in discharge circuit module
Feedback signal；
Control circuit module is issued according to the reference voltage value of feedback signal and reference circuit offer in feed circuit module
Signal is controlled, discharge circuit module is made to keep the work of normal table；
Discharge circuit module, is controlled by control circuit module, and realization discharges to battery pack with constant electric current.
As the invention patent preferred embodiment, the control circuit module is made of comparator and field-effect tube, field effect
Should the source electrode of pipe connected by sample resistance with a pole of battery pack, the drain electrode of field-effect tube passes through high-power resistance and switching molding
Block (1) foot connects；The grid of field-effect tube is connected by a resistance with comparator output terminal, and the reverse side of the comparator receives
One feedback voltage level of feed circuit module input, the reference voltage value awarded according to feedback voltage level and base modules are common
A control signal is exported after effect to control field-effect tube on-off, to control discharge circuit module, reaches current constant control work
With.
As another preferred embodiment of the invention patent, one end of the battery pack is connected with switch module one end, switch
The module other end is connected with a high-power resistance, and high-power resistance connects with the drain electrode of field-effect tube again, source electrode and sampling
Resistance connects, and the other end of sample resistance is connected with the other end of battery pack.When the control for receiving control circuit module output
When signal, discharge circuit module starts to discharge to battery pack by high-power resistance, and discharge current is by control circuit mould
Block control, avoids battery pack from failing because of over-discharge.
Since the present invention has discharging function using capacitance power battery charger, so that battery is not in over-discharge failure, from
And greatly enhance the safety and useful life of battery.
Detailed description of the invention
Attached drawing 1 is a kind of structure chart of the capacitance power battery charger of belt discharge function of the present invention；
Attached drawing 2 is a kind of capacitance power battery charger circuit diagram of belt discharge function of the present invention.
Specific embodiment
With reference to Fig. 1, the present invention is a kind of capacitance power battery charger with discharging function, is used for by more piece monomer electricity
The battery pack that pond is connected in series realizes discharging function comprising:
Charging circuit module 1, for charging to the battery pack being connected in series by more piece single battery；
Discharging function module 2, discharging function module 2 further include: reference circuit module 2-1, for giving control circuit module 2-3
Some specific operating voltage value is provided, this voltage value can be completed by adjusting circuit parameter, to make the normal work of control circuit
Offer precondition is provided；
Feed circuit module 2-2 is sampled acquisition to the electric current in discharge circuit module 2-4 by sample resistance, sends to
One voltage signal of the reverse side of comparator in control circuit module 2-33；
Control circuit module 2-33, is made of comparator and field-effect tube, and the source electrode of field-effect tube passes through sample resistance and battery
One pole of group connects, and the drain electrode of field-effect tube is connected by high-power resistance with a foot of switch；The grid of field-effect tube passes through
One resistance is connected with comparator output terminal, and the reverse side of the comparator receives a feedback of feed circuit module 2-2 input
Voltage value, output one control signal is controlled after the reference voltage value collective effect awarded according to feedback voltage level and base modules
Field-effect tube on-off processed reaches current constant control effect to control discharge circuit module 2-4.
One end of discharge circuit module 2-4, battery pack are connected with switch one end, switch the other end and a high-power resistance
Be connected, high-power resistance connects with the drain electrode of field-effect tube again, and source electrode and sample resistance connect, the other end of sample resistance and
The other end of battery pack is connected.When receiving the control signal of control circuit module 2-3 output, discharge circuit module 2-4 is opened
Beginning discharges to battery pack by high-power resistance, and discharge current is controlled by control circuit module 2-3, avoids battery pack because of mistake
Put failure.
The method have the characteristics that the discharging function of charger, may be implemented to be put with some specific constant current
Electricity.The low on-resistance characteristic of field-effect tube is controlled using comparator as constant current switch device, by high-power resistance come
It realizes to battery pack constant-current discharge.
With reference to Fig. 2, a kind of the present invention will be described in detail battery test system and the method work for controlling battery test system
Process.(1) of connector J1, (2) bipod connect charging circuit module 1.(1) foot V+ of connector J2 connects the anode of battery pack, (2)
Foot connects the cathode of battery pack.When switch S1 in switch is pulled out to (2) foot of S1, connector J1 is connected to J2, charging circuit module 1
It charges to battery pack 1；When switch S1 in switch is pulled out to (1) foot of S1, connector J2 is connected to discharging function module 2, battery
Group 1 is discharged by high-power resistance R7 in discharging function module 2.In this discharge process, DC voltage VCC passes through capacitor
C5 ground connection, and it is connected to the power input foot of comparator U1A in control function module 2-3.Series resistance R1 is followed by pressure stabilizing VCC again
(1), (3) bipod of device U2.(2) foot of voltage-stablizer U2 is grounded.Capacitor C1, C2 are connected in parallel on (1) of voltage-stablizer U2, (2) foot.Surely
(1) foot of depressor U2 exports a reference voltage, which connects after resistance R2 and variable resistance VR1 partial pressure through series resistance R3
The in-phase end of comparator U1A into control function module 2-3, provides a reference voltage.Feed circuit module 2-2 passes through resistance
R5 detects discharge current size, is concatenated the reverse side that resistance R4 is connected to comparator U1A in control circuit module 2-3.Control electricity
The grid of the output termination field-effect tube Q1 of comparator U1A passes through detection resistance when discharge current is larger in the module 2-3 of road
The voltage that R5 feeds back to comparator U1A reverse side is higher than the reference voltage value of its in-phase end, and comparator U1A just exports low electricity
It is flat, it is not turned on FET drain and source electrode, has blocked the electric current of discharge circuit；When discharge current is smaller, pass through detection
The voltage that resistance R5 feeds back to comparator U1A reverse side is lower than the reference voltage value of its in-phase end, the high electricity of comparator U1A output
Flat, the grid of driving FET Q1 makes FET drain and source conduction, in this way, discharge current is excessive, field-effect tube Q1
Shutdown；Discharge current is too small, and field-effect tube Q1 conducting stabilizes the discharge current size of battery pack-, plays current constant control work
With the over-discharge for avoiding battery pack is failed.Adjust the resistance value of variable resistance VR1 in reference circuit module 2-2, so that it may change control
The reference voltage value of comparator U1A in-phase end in circuit module 2-3 processed, and then change the constant current value of discharge current, realize battery
Group can be carried out the function of constant-current discharge under different current conditions.
The purpose of the method for a kind of battery test system of the present invention and control battery test system is to provide for one kind more
How good solution power battery guarantees that battery pack can be discharged with a specific constant current value when electric discharge, and
Battery pack is not in the scheme of over-discharge failure, to greatly enhance the safety and useful life of battery.
The embodiments of the present invention described above are not intended to limit the scope of the present invention.It is any in the present invention
Spirit and principle within made modifications, equivalent substitutions and improvements etc., should be included in claim protection model of the invention
Within enclosing.
Claims (3)
1. a kind of battery test system and the method for controlling battery test system, it is characterised in that: including charging circuit module and
Discharging function module, and the discharging function module includes:
Reference circuit module, for providing some specific voltage value to control circuit module, this voltage value can be by adjusting electricity
Road parameter is completed；
Feed circuit module provides one to control circuit module by being sampled to the electric current in discharge circuit module
Feedback signal；
Control circuit module is issued according to the reference voltage value of feedback signal and reference circuit offer in feed circuit module
Signal is controlled, discharge circuit module is made to keep the work of normal table.
2. battery test system as described in claim 1 and the method for controlling battery test system, it is characterised in that: described
Control circuit module is made of comparator and field-effect tube, and the source electrode of field-effect tube passes through a pole phase of sample resistance and battery pack
It connects, the drain electrode of field-effect tube is connected by high-power resistance with 1 foot of switch module；The grid of field-effect tube by resistance with
Comparator output terminal is connected, and the reverse side of the comparator receives a feedback voltage level of feed circuit module input, according to anti-
It is logical to control field-effect tube that a control signal is exported after the reference voltage value collective effect that feedthrough voltage value and base modules award
It is disconnected, to control discharge circuit module, reach current constant control effect.
3. battery test system as described in claim 1 and the method for controlling battery test system, it is characterised in that: described
One end of battery pack is connected with switch module one end, and the switch module other end is connected with a high-power resistance, high-power resistance
Connect again with the drain electrode of field-effect tube, source electrode and sample resistance connect, the other end of sample resistance and the other end of battery pack
It is connected；When receiving the control signal of control circuit module output, discharge circuit module starts to pass through battery pack high-power
Resistance discharges, and discharge current is controlled by control circuit module, and battery pack is avoided to fail because of over-discharge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710663224.4A CN109390987A (en) | 2017-08-05 | 2017-08-05 | Battery test system and the method for controlling battery test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710663224.4A CN109390987A (en) | 2017-08-05 | 2017-08-05 | Battery test system and the method for controlling battery test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109390987A true CN109390987A (en) | 2019-02-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710663224.4A Pending CN109390987A (en) | 2017-08-05 | 2017-08-05 | Battery test system and the method for controlling battery test system |
Country Status (1)
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|---|---|
| CN (1) | CN109390987A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110095729A (en) * | 2019-05-30 | 2019-08-06 | 深圳市六维科技有限公司 | A kind of linearity control circuit and battery test system |
-
2017
- 2017-08-05 CN CN201710663224.4A patent/CN109390987A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110095729A (en) * | 2019-05-30 | 2019-08-06 | 深圳市六维科技有限公司 | A kind of linearity control circuit and battery test system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190226 |
|
| WD01 | Invention patent application deemed withdrawn after publication |