CN107947282A - A kind of charging circuit for battery equalization system - Google Patents
A kind of charging circuit for battery equalization system Download PDFInfo
- Publication number
- CN107947282A CN107947282A CN201711341295.9A CN201711341295A CN107947282A CN 107947282 A CN107947282 A CN 107947282A CN 201711341295 A CN201711341295 A CN 201711341295A CN 107947282 A CN107947282 A CN 107947282A
- Authority
- CN
- China
- Prior art keywords
- circuit
- battery
- monocell
- voltage
- battery pack
- 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.)
- Pending
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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass circuits
Abstract
The invention discloses a kind of charging circuit for battery equalization system, including battery pack, DC DC converters, monocell, voltage sampling circuit and control circuit, monocell obtains the magnitude of voltage of an actual output voltage size after voltage sampling circuit, after the voltage signal enters control circuit, control circuit controls the on and off of DC DC converters, realizes autonomous reaction type positive charge.
Description
Technical field
The present invention relates to battery equalization system, and in particular to a kind of charging circuit for battery equalization system.
Background technology
In battery management system, often will use it is battery balanced, balancing technique be the current world endeavouring research with
The important technology of one battery management system (bms) of exploitation, the analysis found that, if battery long-term work in overcharge or
In the case of person's overdischarge, large effect can be caused to battery, the capacity of battery can be caused to decline.With battery access times
Increase, its capacity can also diminish therewith.Moreover, the degree of volume change differs, even the battery of same brand use it is identical
Time after, its volume change situation is also not quite similar.Battery pack is formed since electric automobile needs multiple batteries to be together in series
To power, in general, one battery module of several battery compositions, several battery modules are together in series again forms battery
Bag.In use for some time, the capacity of each battery has different degrees of decline, in this way, just causing in battery module
Imbalance between portion and battery module.The whole volume of battery pack is limited be subject to single " short slab " battery, utilization rate
It is greatly reduced.The mileage number that new-energy automobile charges every time can also greatly shorten.Exactly in this context, battery management
The equalization scheme of system and battery is suggested.
In battery equalization system, when the brownout of monocell, it is necessary to control battery pack to charge monocell.
But in current positive charge circuit, it is difficult to positive charge is carried out by way of from primary feedback, also not to battery pack
And the real-time voltage monitoring function of monocell.
The content of the invention
Present invention aims at solve in current positive charge circuit, it is difficult to forward direction is carried out by way of from primary feedback
Charging, also not to the real-time voltage monitoring function of battery pack and monocell the problem of.In view of the above-mentioned problems, the present invention provides
For a kind of charging circuit of battery equalization system, its application can control battery pack to single electricity by way of from primary feedback
Pond is charged, and can monitor battery pack and the voltage condition of monocell in real time.
The purpose of the present invention is achieved through the following technical solutions：
For a kind of charging circuit of battery equalization system, including battery pack, dc-dc and monocell, further include
Voltage monitoring circuit, voltage sampling circuit and control circuit；
The primary coil of the dc-dc and the both ends of battery pack connect, its secondary coil connects with monocell both ends
Connect, for by the voltage compensation of battery pack to monocell；
The both ends connection of the voltage sampling circuit and monocell, for the sampling to single battery voltage；
The control circuit is with voltage sampling circuit with being connected, and for producing control signal, control circuit also accesses battery
On the circuit that group is connected with primary coil, for controlling the on and off of dc-dc；
Further, the both ends of the battery pack and monocell are equipped with counnter attack diode.
Compared with prior art, the invention has the advantages that：Monocell obtains one after voltage sampling circuit
The magnitude of voltage of a actual output voltage size, after which enters control circuit, control circuit control dc-dc
On and off, realizes autonomous reaction type positive charge.
Brief description of the drawings
Attached drawing described herein is used for providing further understanding the embodiment of the present invention, forms one of the application
Point, do not form the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is the circuit structure diagram of the present invention.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment
As shown in Figure 1, a kind of charging circuit for battery equalization system, including battery pack, dc-dc and single electricity
Pond, further includes voltage monitoring circuit, voltage sampling circuit and control circuit；The primary coil and battery of the dc-dc
The both ends connection of group, its secondary coil is connected with monocell both ends, for by the voltage compensation of battery pack to monocell；The electricity
The both ends of sample circuit and monocell are pressed to connect, for the sampling to single battery voltage；The control circuit and voltage sample electricity
Road is with being connected, and for producing control signal, control circuit is also accessed on the circuit that battery pack is connected with primary coil, for controlling
The on and off of dc-dc；The both ends of the battery pack and monocell are equipped with counnter attack diode.
Above-described embodiment, has carried out the purpose of the present invention, technical solution and beneficial effect further
Describe in detail, it should be understood that the foregoing is merely the embodiment of the present invention, be not intended to limit the present invention
Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution, improvement and etc. done, should all include
Within protection scope of the present invention.
Claims (2)
1. exist for a kind of charging circuit of battery equalization system, including battery pack, dc-dc and monocell, its feature
In further including voltage monitoring circuit, voltage sampling circuit and control circuit；
The primary coil of the dc-dc and the both ends of battery pack connect, its secondary coil is connected with monocell both ends, use
In by the voltage compensation of battery pack to monocell；
The both ends connection of the voltage sampling circuit and monocell, for the sampling to single battery voltage；
The control circuit is with voltage sampling circuit with being connected, for producing control signal, control circuit also access battery pack with
On the circuit of primary coil connection, for controlling the on and off of dc-dc.
A kind of 2. charging circuit according to claim 1 for battery equalization system, it is characterised in that the battery pack
Counnter attack diode is equipped with the both ends of monocell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711341295.9A CN107947282A (en) | 2017-12-14 | 2017-12-14 | A kind of charging circuit for battery equalization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711341295.9A CN107947282A (en) | 2017-12-14 | 2017-12-14 | A kind of charging circuit for battery equalization system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107947282A true CN107947282A (en) | 2018-04-20 |
Family
ID=61944249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711341295.9A Pending CN107947282A (en) | 2017-12-14 | 2017-12-14 | A kind of charging circuit for battery equalization system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107947282A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103066667A (en) * | 2013-01-25 | 2013-04-24 | 天津新智电源有限公司 | Battery balancing system and method based on independent transformer |
| CN203278656U (en) * | 2013-03-29 | 2013-11-06 | 杭州士兰微电子股份有限公司 | Switching power supply, and optoelectronic coupler isolation transmission circuit for digital-control switching power supply |
| CN203607902U (en) * | 2013-12-20 | 2014-05-21 | 惠州市亿能电子有限公司 | Battery pack equalization circuit |
| CN105871234A (en) * | 2016-05-05 | 2016-08-17 | 中国石油集团渤海钻探工程有限公司 | 12V stabilized voltage supply circuit for intelligent drilling tool |
| CN106329933A (en) * | 2015-07-10 | 2017-01-11 | Tdk株式会社 | Switching power supply device |
-
2017
- 2017-12-14 CN CN201711341295.9A patent/CN107947282A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103066667A (en) * | 2013-01-25 | 2013-04-24 | 天津新智电源有限公司 | Battery balancing system and method based on independent transformer |
| CN203278656U (en) * | 2013-03-29 | 2013-11-06 | 杭州士兰微电子股份有限公司 | Switching power supply, and optoelectronic coupler isolation transmission circuit for digital-control switching power supply |
| CN203607902U (en) * | 2013-12-20 | 2014-05-21 | 惠州市亿能电子有限公司 | Battery pack equalization circuit |
| CN106329933A (en) * | 2015-07-10 | 2017-01-11 | Tdk株式会社 | Switching power supply device |
| CN105871234A (en) * | 2016-05-05 | 2016-08-17 | 中国石油集团渤海钻探工程有限公司 | 12V stabilized voltage supply circuit for intelligent drilling tool |
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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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180420 |
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| RJ01 | Rejection of invention patent application after publication |