CN204258377U - A kind of lithium battery group intelligent balance recovers charger - Google Patents
A kind of lithium battery group intelligent balance recovers charger Download PDFInfo
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- CN204258377U CN204258377U CN201420775530.9U CN201420775530U CN204258377U CN 204258377 U CN204258377 U CN 204258377U CN 201420775530 U CN201420775530 U CN 201420775530U CN 204258377 U CN204258377 U CN 204258377U
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Abstract
The utility model discloses a kind of lithium battery group intelligent balance and recover charger, comprising the voltage detection unit for obtaining battery voltage parameter; For obtaining the current detecting unit of battery pack current parameter; The main control unit be connected with voltage detection unit, current detecting unit respectively, described main control unit is according to the voltage, the current parameters that obtain battery pack, and judge according to the threshold value preset, when the voltage of battery pack, electric current are lower than the threshold value preset, main control unit judges that now battery pack is in nonequilibrium condition; The battery power discharge unit be connected with main control unit, when battery pack is in nonequilibrium condition, main control unit drives battery pack to be discharged by battery power discharge unit, exits to make the li-ion cell protection unit in battery pack; The continuous current unit be connected with main control unit, the charging current of battery pack is kept close with the euqalizing current in li-ion cell protection unit or equal by described continuous current unit.
Description
Technical field
The present invention relates to a kind of charger, more precisely, relate to a kind of lithium battery group intelligent balance charger.
Background technology
Existing charger all adopts traditional constant current constant voltage to charge, because lithium electricity group is in series by multiple cell, the performance of each cell, can not accomplish completely the same when industrialization, namely charger is when a constant current charges, the voltage deviation that some are tiny will inevitably be produced, this deviation can increase along with the increase of discharge and recharge number of times, battery inferior can be even more serious, when constant current charge, deviation obviously superposes, internal protection plate monomer is made to shift to an earlier date protection act, and make whole battery pack shift to an earlier date complete charge, fill less than battery pack maximum capacity, capacity can be used to decline, a lost of life! especially present ternary lithium battery group and manganese lithium battery group, because battery capacity voltage platform is higher, overcharge ability is too poor, the equalizing circuit operating voltage range of this kind of battery pack is narrowed, under cannot being normally operated in better equilibrium state!
Summary of the invention
The present invention, in order to solve problems of the prior art, provides a kind of lithium battery group intelligent balance and recovers charger.
In order to realize above-mentioned object, technical scheme of the present invention is: a kind of lithium battery group intelligent balance recovers charger, comprises
For obtaining the voltage detection unit of battery voltage parameter; For obtaining the current detecting unit of battery pack current parameter;
The main control unit be connected with voltage detection unit, current detecting unit respectively, described main control unit is according to the voltage, the current parameters that obtain battery pack, and judge according to the threshold value preset, when the voltage of battery pack, electric current are lower than the threshold value preset, main control unit judges that now battery pack is in nonequilibrium condition;
The battery power discharge unit be connected with main control unit, when battery pack is in nonequilibrium condition, main control unit drives battery pack to be discharged by battery power discharge unit, exits to make the li-ion cell protection unit in battery pack;
The continuous current unit be connected with main control unit, the charging current of battery pack is kept close with the euqalizing current in li-ion cell protection unit or equal by described continuous current unit.
Preferably, first described main control unit judges whether the electric current detected in current detecting unit reaches less than 1/10th of predetermined threshold value, if, then main control unit judges whether the voltage detected in voltage detection unit reaches default threshold value again, if not, judge that battery pack is in nonequilibrium condition.
Preferably, described battery power discharge unit is resistance.
Preferably, continuous current unit comprises PWM switch power controller.
Preferably, the charging indicating member be connected with main control unit is also comprised.
Charger of the present invention; when main control unit judges that battery pack is in nonequilibrium condition; first battery pack is driven to be discharged by battery power discharge unit; exit to make the li-ion cell protection power supply of battery pack; the battery pack that can be to be full of electricity is charged again; and by PWM switch power controller, it is close or equal with euqalizing current in li-ion cell protection unit that adjusting pulsewidth makes the output current of charger drop to, and slowly charges to battery pack.
Accompanying drawing explanation
Fig. 1 shows the fundamental diagram of charger of the present invention.
Embodiment
The technical problem solved to make the present invention, the technical scheme of employing, the technique effect easy to understand obtained, below in conjunction with concrete accompanying drawing, be described further the specific embodiment of the present invention.
With reference to figure 1, the invention discloses a kind of lithium battery group intelligent balance and recover charger, for charging for battery pack 2, this battery pack 2 is made up of multiple cell, such as, can be ternary lithium battery group and manganese lithium battery group and ferric phosphate lithium cell group etc.Charger of the present invention comprises AC input cell 9, for accessing normal domestic use socket etc., also comprises the pressure unit 7 and AC-DC conversion unit 8 etc. for step-down.This belongs to existing technology, no longer illustrates at this.
Charger of the present invention also comprises the voltage detection unit 4 be connected with battery pack 2 for detecting battery pack 2 information of voltage, and for detecting the current detecting unit 3 of battery pack 2 current information.Voltage detection unit 4 detect battery pack 2 charge normal after voltage parameter information, current detecting unit 3 detect battery pack 2 charge normal after current parameters information.
Also comprise the main control unit 1 connected respectively at voltage detection unit 4, current detecting unit 3, main control unit 1 from voltage detection unit 4, current detecting unit 3 obtain battery pack 2 charge normal after information of voltage, current information, and judge whether each cell in now battery pack 2 is in poised state according to this information.
Particularly, can be such as that main control unit judges that now battery pack is in nonequilibrium condition when the voltage of battery pack, electric current are lower than each threshold value preset; This threshold value preset can be desirable saturation voltage, the saturation current of battery pack.
In a concrete execution mode of the present invention, preferably, first described main control unit 1 judges whether the electric current detected in current detecting unit 3 drops to less than 1/10th of predetermined threshold value, that is, if, then main control unit 1 judges whether the voltage detected in voltage detection unit 4 reaches default threshold value again, if not, judges that battery pack is in nonequilibrium condition.If so, then judge that this battery pack is in poised state.
Charger of the present invention also comprises the battery power discharge unit 5 be connected with main control unit 1, and this battery power discharge unit 5 can be the resistance etc. be connected with battery pack 2 output.When main control unit 1 judges that this battery pack 2 is in nonequilibrium condition, main control unit 1 drives battery pack 2 to be discharged by battery power discharge unit 5, exits to make the li-ion cell protection unit in battery pack.That is; when main control unit 1 judges that this battery pack 2 is in nonequilibrium condition; also some cell of existence just meaning in battery pack 2 is in and does not fill full state; now; battery pack 2 is driven to discharge; thus charger makes the li-ion cell protection unit in battery pack exit charge protection, so that can charge again to battery pack.
Charger of the present invention also comprises the continuous current unit 6 be connected with main control unit 1, and the charging current of battery pack 2 is kept close with the euqalizing current in li-ion cell protection unit or equal by described continuous current unit 6.This continuous current unit 6 can be a PWM switch power controller, produces a charging current close or equal with euqalizing current in li-ion cell protection unit, again charge to battery pack 2 by PWM switch power controller.
Charger of the present invention, by PWM switch power controller, it is close or equal with euqalizing current in li-ion cell protection unit that adjusting pulsewidth makes the output current of charger drop to, and slowly charges to battery pack.The cell be full of works due to balancing circuitry; the balance resistance that electric current flows through in protected location dissipates, and can not be charged, and the balancing circuitry not being full of the protected location in battery does not work; thus charged, until all cells be not full of are full of.Autobalance work is complete.If cell balance is better under normal circumstances for battery pack, charger can not enter into autobalance pattern, and the charging interval can not be affected.Autobalance pattern is just entered when only having battery pack extremely unbalance, charging interval corresponding growth, unbalance larger, the time of repairing is longer, battery pack after reparation reaches the maximum capacity of battery pack, and prevent unbalance the caused vicious circle of cell secondary, substantially prolongs the useful life of battery pack.
Preferably, the charging indicating member 10 be connected with main control unit 1 is also comprised.
The present invention is by preferred embodiment having carried out detailed explanation.But, by studying carefully above, concerning the change of each execution mode with to increase be apparent for one of ordinary skill in the art.Being intended that these changes all and increasing of applicant has all dropped in scope that the claims in the present invention protect.
Claims (5)
1. lithium battery group intelligent balance recovers a charger, it is characterized in that, comprising:
For obtaining the voltage detection unit of battery voltage parameter;
For obtaining the current detecting unit of battery pack current parameter;
The main control unit be connected with voltage detection unit, current detecting unit respectively, described main control unit is according to the voltage, the current parameters that obtain battery pack, and judge according to the threshold value preset, when the voltage of battery pack, electric current are lower than the threshold value preset, main control unit judges that now battery pack is in nonequilibrium condition;
The battery power discharge unit be connected with main control unit, when battery pack is in nonequilibrium condition, main control unit drives battery pack to be discharged by battery power discharge unit, exits to make the li-ion cell protection unit in battery pack;
The continuous current unit be connected with main control unit, the charging current of battery pack is kept close with the euqalizing current in li-ion cell protection unit by described continuous current unit.
2. charger according to claim 1, it is characterized in that: first described main control unit judges whether the electric current detected in current detecting unit drops to 1/10th of predetermined threshold value, if, then main control unit judges whether the voltage detected in voltage detection unit reaches default threshold value again, if not, judge that battery pack is in nonequilibrium condition.
3. charger according to claim 1, is characterized in that: described battery power discharge unit is resistance.
4. charger according to claim 1, is characterized in that: continuous current unit comprises PWM switch power controller.
5. charger according to claim 1, is characterized in that: also comprise the charging indicating member be connected with main control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420775530.9U CN204258377U (en) | 2014-12-11 | 2014-12-11 | A kind of lithium battery group intelligent balance recovers charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420775530.9U CN204258377U (en) | 2014-12-11 | 2014-12-11 | A kind of lithium battery group intelligent balance recovers charger |
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| Publication Number | Publication Date |
|---|---|
| CN204258377U true CN204258377U (en) | 2015-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420775530.9U Expired - Fee Related CN204258377U (en) | 2014-12-11 | 2014-12-11 | A kind of lithium battery group intelligent balance recovers charger |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110235334A (en) * | 2017-02-07 | 2019-09-13 | 株式会社自动网络技术研究所 | Equalization control device and vehicle power supply device |
| CN111413636A (en) * | 2020-03-27 | 2020-07-14 | 芯鹿科技(苏州)有限公司 | Battery information detection method for balance charger |
-
2014
- 2014-12-11 CN CN201420775530.9U patent/CN204258377U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110235334A (en) * | 2017-02-07 | 2019-09-13 | 株式会社自动网络技术研究所 | Equalization control device and vehicle power supply device |
| CN110235334B (en) * | 2017-02-07 | 2023-05-23 | 株式会社自动网络技术研究所 | Equalization control device and vehicle power supply device |
| CN111413636A (en) * | 2020-03-27 | 2020-07-14 | 芯鹿科技(苏州)有限公司 | Battery information detection method for balance charger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150408 Termination date: 20201211 |