CN201829982U - Battery equalizing charging device - Google Patents
Battery equalizing charging device Download PDFInfo
- Publication number
- CN201829982U CN201829982U CN2010205701999U CN201020570199U CN201829982U CN 201829982 U CN201829982 U CN 201829982U CN 2010205701999 U CN2010205701999 U CN 2010205701999U CN 201020570199 U CN201020570199 U CN 201020570199U CN 201829982 U CN201829982 U CN 201829982U
- Authority
- CN
- China
- Prior art keywords
- circuit
- voltage
- battery
- control circuit
- power supply
- 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.)
- Expired - Fee Related
Links
Images
Classifications
-
- 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
Abstract
The utility model relates to a charging device, particularly relates to a charging device which enables the voltage of each battery to be equalizing (equalizing charge) in a series-connected battery charging system. The charging device comprises a control circuit, a charge power supply and a battery voltage input circuit, wherein the control circuit has a logical operation function; the charge power supply is used for providing power sources required during charging to rechargeable batteries; the battery voltage input circuit is used for detecting the voltage condition of a single battery of a battery pack and providing the condition to the control circuit; the charge power supply is connected with a switching circuit, the switching circuit comprises a plurality of switches which are mutually connected to form a topological structure, the charge power supply charges one battery or several adjacent batteries in the series-connected battery pack through the switching circuit, and the switching circuit is controlled by the control circuit. By using a battery equalizing charging device provided by the utility model, an equalizing mode which uses an other auxiliary power supply to supply power for an equalizing circuit is simplified, a charging circuit is simple and easily realized, boost charge for several adjacent batteries simultaneously can be realized with fewer switches, the circuits are simplified, circuit components are saved and the usability of the battery pack is improved.
Description
Technical field
The utility model relates to a kind of charging device, relates in particular to the charging device that makes every batteries electric voltage equalization (equalizing charge) in a kind of series-connected cell charging system.
Background technology
To multi-section serial battery charging, when not taking special measure, after certain batteries was full of, for fear of causing danger, system will stop other battery charge, made the battery that has be full of, and the battery that has is not filled.If things go on like this, each cell voltage difference can be increasing, makes to show that the battery pack actual capacity that is full of can descend greatly, has reduced the serviceability of battery pack.
Summary of the invention
Technical problem to be solved in the utility model is to overcome defective of the prior art, can be to equalizing charge of battery, thus the difference of each cell voltage of back of avoiding charging.
For solving the problems of the technologies described above, the utility model provides a kind of device for equalizing charge of battery,
Comprise control circuit, be the control circuit of tool logical operation function;
Charge power supply is used for power supply required when rechargeable battery provides charging;
The cell voltage input circuit is used to detect the voltage condition of battery pack single battery, and offers described control circuit;
Described charge power supply with comprise the switching circuits that a plurality of switches that are interconnected into topological structure constitute and be connected, make charge power supply to the joint of one in the series battery or adjacent a few batteries charging by described switching circuit, described switching circuit is controlled by described control circuit.
Switch in the described switching circuit connects into topological structure, and a plurality of switches in the described switching circuit connect into topological structure, and described a plurality of switches comprise the horizontal switch that is connected with battery unit, with the longitudinal switch that is connected the adjacent transverse switch.
Horizontal switch in the described switching circuit is the bidirectional field-effect pipe.
The control end of described gate-controlled switch is connected with described control circuit, is controlled the closed and disconnected of described switch by described control circuit.
Described control circuit is gathered the voltage signal of each single battery by the cell voltage input circuit, and the actual voltage value of each single battery that described control circuit will obtain and given magnitude of voltage compare, to determine unbalanced single battery.
Be provided with voltage, current conversion circuit between described charge power supply and the described switching circuit, described voltage, current conversion circuit are controlled by described control circuit, can be according to different number of batteries, conversion goes out different electric currents, voltage, makes the electric current, the voltage that go out from described charge power supply conversion can be fit to the unbalanced battery of varying number is charged.
Described voltage, current conversion circuit comprise reduction voltage circuit, current control circuit, voltage comparator circuit, described voltage comparator circuit compares the voltage of the unbalanced battery to be charged that the supply power voltage of described charge power supply and described control circuit transmit, and the signal after will comparing passes to described reduction voltage circuit; Described current control circuit compares maximum current default in electric current in the circuit and the described control circuit, and the signal after will comparing passes to described reduction voltage circuit.
Described reduction voltage circuit comprises the voltage-dropping type integrated package, according to the signal controlling of transmitting circuit is carried out step-down.
Described voltage-dropping type integrated package is a buck DC-DC.
The beneficial effect that the utility model reached: device for equalizing charge of battery of the present utility model, simplified and used the balanced way of another accessory power supply the equalizing circuit power supply, make charging circuit be simple and easy to realize, and available less switch is realized the boost charge simultaneously of adjacent several batteries, simplify circuit, save the circuit elements device, improved the serviceability of battery pack.
Description of drawings
Fig. 1 is an equalizing charge of battery circuit module of the present utility model;
Fig. 2 is the circuit diagram of electric current among Fig. 1, voltage conversion circuit;
Fig. 3 is a kind of preferred switch topology figure of switching circuit among Fig. 1;
Fig. 4 is the circuit diagram of switch topology among Fig. 3.
Among the figure, 101, battery pack; 102, cell voltage input circuit; 103, control circuit; 104, switching circuit; 105, charge power supply; 106, voltage, current conversion circuit; 107, reduction voltage circuit; 108, current control circuit; 109, voltage comparator circuit; 110, voltage-dropping type integrated package; R11, resistance; U2A, comparator; U2B, comparator; U2C, differential amplifier; 2, pin; 3, pin; 6, pin; 12, pin; B1, battery unit; B2, battery unit; B3, battery unit; SW1, switch; SW2, switch; SW3, switch; SW4, switch; SW5, switch; SW6, switch; SW7, switch.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.Following examples only are used for technical scheme of the present invention more clearly is described, and can not limit protection scope of the present invention with this.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, be the preferred a kind of execution mode of the utility model, each single battery all is connected with cell voltage input circuit 102 in the battery pack 101, cell voltage input circuit 102 passes to control circuit 103 with the voltage signal of single battery, and control circuit 103 is generally the logical operation control circuit that comprises CPU or MCU.Obtain the magnitude of voltage at two ends, single battery unit by control circuit 103 computings.Control circuit 103 is full of magnitude of voltage relatively according to the voltage of each the single battery unit that obtains with default, judge be recharged whether exist between the battery unit unbalanced.Reached as certain batteries cell voltage and to be full of value, then control circuit 103 sends corresponding control signal to switching circuit 104, and the switch of this battery unit correspondence is disconnected, and then the battery unit of this overtension stops charging.Low excessively as certain batteries cell voltage, promptly represent this battery underfill, then control circuit 103 sends corresponding control signal to switching circuit 104, and the switch of this batteries unit correspondence is remained closed, and continues charging.
Have voltage, current conversion circuit 106 between charge power supply 105 and the battery pack 101, its work is by control circuit 103 controls.When the number of batteries of the detected underfill electricity of battery voltage detection circuit (not shown) is n, then control circuit 103 output control signals are given voltage, current conversion circuit 106, control its power supply that charge power supply 105 is provided and are adjusted to n battery unit charge voltage, the electric current of needed suitable size.Because battery is in a state that progressively is filled, the part of underfill is along with charging process is lasting fewer and feweri, so generally, the adjustment mode of this power supply is step-down.
Fig. 2 is to be example with 3 series connected battery unit, illustrate electric current of the present utility model, voltage conversion circuit 106 and be connected with other circuit preferred embodiment a kind of, the voltage source that picks out by battery unit (not shown) in the battery pack, provide to control circuit 103 through cell voltage input circuit 102, detect the magnitude of voltage of each battery unit by the CPU in the control circuit 103.Voltage, current conversion circuit 106 comprise reduction voltage circuit 107, current control circuit 108, voltage comparator circuit 109.Wherein reduction voltage circuit 107 comprises voltage-dropping type integrated package 110, selects buck DC-DC in the present embodiment for use.Control the pin one 2 of its signal input part that carries out step-down for being connected with control circuit 103.
In current control circuit 108, resistance R 11 is used for power taking stream, and the current value behind the difference channel amplifying signal of U2C inputs to the pin 3 of comparator U2A.The input one of the pin two of U2A is by one of control circuit 103 outputs default lowest high-current value, through U2A relatively after, excessive as circuital current, comparator U2A pin one output high level, voltage-dropping type integrated package 110 obtains over-current signal, adjusts voltage output; As circuital current less than predetermined current, comparator U2A pin one output low level, step-down IC chip type 110 is not adjusted voltage.
In voltage comparator circuit 109, the voltage of charging is compared by comparator U2B.When control circuit 103 has been judged n batteries unit underfill electricity, export the charging voltage value signal of a corresponding n batteries of presetting to the pin 6 of U2B.After comparator U2B and circuit primary voltage compare, be higher than the due charging voltage of n batteries as circuit voltage, then voltage comparator circuit 109 output high level make reduction voltage circuit 107 work, reduce circuit voltage.The conversion of voltage, electric current is herein regulated constantly to circulate and is carried out, and regulates according to the battery unit number of underfill in the charging circuit at any time.
Fig. 3 is a kind of preferred switch topology figure of switching circuit of the present utility model, this topological structure can expand to the battery series connection of any amount, present embodiment is that example illustrates its working method with 3 series connected battery unit only, and current sampling partly is not limited in the block diagram of current-voltage conversion control circuit.The topological structure form can adopt different forms as required.
In switching circuit 104, comprise 7 switches that are interconnected into topological structure, be respectively switch SW 1, switch SW 2, switch SW 3, switch SW 4, switch SW 5, switch SW 6, switch SW 7, each switch is connected with control circuit 103, and is controlled the closure of each switch by control circuit 103 by the switch control end by switch control end switch control C1, switch control C2, switch control C3, switch control C4, switch control C5, switch control C6, the switch control C7 of 7 switches respectively.
That be connected with battery unit B1 is horizontal switch SW 1, SW2, and that connect two horizontal switch SW 1, SW2 is longitudinal switch SW5.The battery unit of each single-unit all has two horizontal switches that are attached thereto, and laterally has a longitudinal switch between the switch, forms topological structure between the switch thereby make.
Its working method is as follows, and is discontented as battery unit B1 electric weight, can make switch SW 1, switch SW 2, switch SW 6, switch SW 7 conductings by the switch control end, and other all disconnects, thereby battery unit B1 is charged separately.
Discontented as battery unit B2 electric weight, can make switch SW 5, switch SW 2, switch SW 3, switch SW 7 conductings, other all disconnects, thereby battery unit B2 is charged separately.
Be discontented with as battery unit B2, B3 electric weight, can make switch SW 5, switch SW 2, switch SW 4 conductings, other all disconnects, thereby adjacent cell B2, B3 are charged separately.
Fig. 4 is the circuit diagram of switch topology as shown in Figure 3.
Switch SW 1 is the bidirectional field-effect pipe of being made up of field effect transistor Q11 and Q12, and SW2, SW3, SW4 also are the bidirectional field-effect pipe, is used to prevent from only may take place with a unidirectional field effect transistor situation of back discharge.
SW5, SW7, SW7 are unidirectional field effect transistor, also can be the components and parts that triode, relay etc. can be used as electronic switch.
Those of ordinary skill in the art can recognize that battery charge balanced way of the present utility model can also be used for other devices except that charging device, reaches the effect of even voltage equally.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model know-why; can also make some improvement and distortion, these improvement and distortion also should be considered as protection range of the present utility model.
Claims (10)
1. device for equalizing charge of battery,
Comprise control circuit, for having the control circuit of logical operation function;
Charge power supply is used for power supply required when rechargeable battery provides charging;
The cell voltage input circuit is used to detect the voltage condition of battery pack single battery, and offers described control circuit;
It is characterized in that, described charge power supply with comprise the switching circuits that a plurality of switches that are interconnected into topological structure constitute and be connected, make charge power supply to the joint of one in the series battery or adjacent a few batteries charging by described switching circuit, described switching circuit is controlled by described control circuit.
2. device for equalizing charge of battery according to claim 1 is characterized in that, a plurality of switches in the described switching circuit connect into topological structure, and described a plurality of switches comprise the horizontal switch that is connected with battery unit, with the longitudinal switch that is connected the adjacent transverse switch.
3. device for equalizing charge of battery according to claim 2 is characterized in that, the horizontal switch in the described switching circuit is the bidirectional field-effect pipe.
4. device for equalizing charge of battery according to claim 1 is characterized in that described switch has control end, is connected with described control circuit, is controlled the closed and disconnected of described switch by described control circuit.
5. device for equalizing charge of battery according to claim 1, it is characterized in that, described control circuit is gathered the voltage signal of each single battery by described cell voltage input circuit, the actual voltage value of each single battery that described control circuit will obtain and predeterminated voltage value compare, to determine unbalanced single battery.
6. device for equalizing charge of battery according to claim 1, it is characterized in that, be provided with voltage, current conversion circuit between described charge power supply and the described switching circuit, described voltage, current conversion circuit are controlled by described control circuit, can be according to different number of batteries, conversion goes out different electric currents, voltage, makes the electric current, the voltage that go out from described charge power supply conversion can be fit to the unbalanced battery of varying number is charged.
7. device for equalizing charge of battery according to claim 6, it is characterized in that, described voltage, current conversion circuit comprise reduction voltage circuit, current control circuit, voltage comparator circuit, described voltage comparator circuit compares the voltage of the unbalanced battery to be charged that the supply power voltage of described charge power supply and described control circuit transmit, and the signal after will comparing passes to described reduction voltage circuit; Described current control circuit compares lowest high-current value default in electric current in the circuit and the described control circuit, and the signal after will comparing passes to described reduction voltage circuit.
8. device for equalizing charge of battery according to claim 7 is characterized in that described reduction voltage circuit comprises the voltage-dropping type integrated package, according to the signal controlling of transmitting circuit is carried out step-down.
9. device for equalizing charge of battery according to claim 8 is characterized in that, described voltage-dropping type integrated package is a buck DC-DC.
10. device for equalizing charge of battery according to claim 1 is characterized in that described control circuit comprises CPU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205701999U CN201829982U (en) | 2010-10-21 | 2010-10-21 | Battery equalizing charging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205701999U CN201829982U (en) | 2010-10-21 | 2010-10-21 | Battery equalizing charging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201829982U true CN201829982U (en) | 2011-05-11 |
Family
ID=43968496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205701999U Expired - Fee Related CN201829982U (en) | 2010-10-21 | 2010-10-21 | Battery equalizing charging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201829982U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102593888A (en) * | 2012-01-17 | 2012-07-18 | 浙江凯能科技有限公司 | Storage battery balanced charging and discharging control system |
| CN104767255A (en) * | 2015-05-06 | 2015-07-08 | 焦志涛 | Battery equalization device |
| WO2015131657A1 (en) * | 2014-03-06 | 2015-09-11 | 王晓秋 | Online undervoltage auxiliary charging control circuit and control method for storage batteries |
| CN106230067A (en) * | 2016-08-31 | 2016-12-14 | 宋利军 | A kind of battery pack balancing charging circuit and balanced charging method |
| CN108321909A (en) * | 2018-04-04 | 2018-07-24 | 中国科学院上海高等研究院 | Intelligent battery administrative unit, the over-pressed self recoverable system of battery charging and self-recovery method |
-
2010
- 2010-10-21 CN CN2010205701999U patent/CN201829982U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102593888A (en) * | 2012-01-17 | 2012-07-18 | 浙江凯能科技有限公司 | Storage battery balanced charging and discharging control system |
| WO2015131657A1 (en) * | 2014-03-06 | 2015-09-11 | 王晓秋 | Online undervoltage auxiliary charging control circuit and control method for storage batteries |
| CN104767255A (en) * | 2015-05-06 | 2015-07-08 | 焦志涛 | Battery equalization device |
| CN106230067A (en) * | 2016-08-31 | 2016-12-14 | 宋利军 | A kind of battery pack balancing charging circuit and balanced charging method |
| CN108321909A (en) * | 2018-04-04 | 2018-07-24 | 中国科学院上海高等研究院 | Intelligent battery administrative unit, the over-pressed self recoverable system of battery charging and self-recovery method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101609994B (en) | Balanced charging device and balanced charging method | |
| CN103023320B (en) | High-efficiency bidirectional direct current converter and control method thereof | |
| CN101799491B (en) | Multi-cell battery pack protection circuit | |
| CN102593881B (en) | Charging power supply circuit, method and application apparatus | |
| CN104158255B (en) | Management of charging and discharging system and its portable power source of application | |
| CN201829982U (en) | Battery equalizing charging device | |
| CN103887844B (en) | The balance of the battery unit being connected in parallel | |
| CN101986508B (en) | Battery equalizing device | |
| JP2012524516A5 (en) | ||
| CN101604860A (en) | Battery management system and the method that the power brick that includes multiple batteries is charged | |
| CN104319854A (en) | Electric bicycle independent photovoltaic charging device and charging method thereof | |
| CN100364202C (en) | Charging device and portable electronic equipment comprising same | |
| CN201146395Y (en) | Online non-interruption switch power-supply | |
| CN109510272A (en) | A kind of charge control method and charging circuit | |
| CN202798123U (en) | Alternating current/direct current (AC/DC) uninterruptible power supply (UPS) device | |
| CN201341030Y (en) | Monitoring and balancing device used for connecting storage battery group in series | |
| CN203632334U (en) | A multi-branch feedback charger circuit | |
| CN104617612B (en) | A kind of universal control circuit of active equalization | |
| CN106712225B (en) | Equalizing charger suitable for 2-8S lithium battery group | |
| CN103701183A (en) | Multi-branch circuit feedback charger circuit and charging method | |
| US20180145525A1 (en) | Charging managment method and system thereof | |
| CN101471576A (en) | Charging method and apparatus | |
| CN104300605A (en) | Power circuit and control method thereof | |
| CN110138024A (en) | Battery charge controller, charging system and charge control method | |
| CN102957177A (en) | Charging management system |
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: 20110511 Termination date: 20161021 |