CN201113508Y - Batteries equalizing device - Google Patents
Batteries equalizing device Download PDFInfo
- Publication number
- CN201113508Y CN201113508Y CNU2007201719154U CN200720171915U CN201113508Y CN 201113508 Y CN201113508 Y CN 201113508Y CN U2007201719154 U CNU2007201719154 U CN U2007201719154U CN 200720171915 U CN200720171915 U CN 200720171915U CN 201113508 Y CN201113508 Y CN 201113508Y
- Authority
- CN
- China
- Prior art keywords
- battery
- battery pack
- control end
- heat
- balanced
- 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 - Lifetime
Links
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 210000004027 cell Anatomy 0.000 description 10
- 238000000034 method Methods 0.000 description 5
- 210000005056 cell body Anatomy 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a battery pack equalizing device, comprising an equalizing unit for carrying out energy equalization to a battery. The equalizing unit comprises a switching unit and a heating unit, wherein the switching unit is connected with a battery equalization control end; the switching unit is turned on when the control end detects that the battery voltage is out of a set range, and is cut off when the control end detects that the battery voltage is within the set range; the heating unit is serially connected with the switching unit and the battery to form a loop; when an electric current passes through, heat is generated to dissipate redundant electric quantity of the battery. The utility model controls an equalizing loop through the switching unit simple in structure; when reaching an equilibrium point, the battery forms the loop through the switching unit and the heating unit, so as to dissipate redundant electric quantity in a heat form and allow the battery pack to achieve equilibrium. The battery pack equalizing device is simple in structure and easy to integrate.
Description
[technical field]
The utility model relates to the battery technology field, relates in particular to battery pack balancing device.
[background technology]
Battery is used so that higher output voltage and bigger power capacity to be provided by series, parallel usually, satisfies the demand of load driving.On the other hand,, be widely used in each electronic product because rechargeable battery has cost performance preferably, even in the motor vehicle.Yet, because the restriction of process conditions tends to exist certain difference between the cell, through after the charge and discharge cycles repeatedly, can produce bigger voltage difference between the battery, the total available capacity of series battery is diminished, influence battery pack serviceability and life-span.
Be directed to this, people's battery balanced method that begins one's study.At present, a kind of battery equalizing circuit comprises switching circuit and resonant circuit.Each battery has anode and negative terminal, and wherein the anode of second battery is connected to the negative terminal of second battery at a common node.This switching circuit can be connected to the anode of first battery at positive node, and the negative terminal that is connected to second battery in negative nodal point; And resonant circuit can be connected between the common node of switching circuit and battery, wherein switching circuit is suitable for alternately making this resonant circuit and first and second batteries to be in parallel, and makes flip-flop flow between them by the function of resonant circuit as charge unbalance between first and second batteries.
Above-mentioned battery equalizing circuit alternately makes resonant circuit in parallel with first, second battery by switching circuit, makes electric current flow between first, second battery by resonant circuit, by the control of the voltage difference between adjacent cell, makes the adjacent cell electric voltage equalization.But, owing to introduced resonant circuit in this equalizing circuit, on the one hand resonance coil and iron core need be set, cause the increase of the weight and volume of equalizing circuit, be unfavorable for the integrated of circuit; On the other hand, because the existence of alternating component in the resonant circuit can exert an influence to the output of battery pack inevitably.
[summary of the invention]
Goal of the invention of the present utility model provides a kind of battery pack balancing device, and this device can effectively carry out balancing energy to battery pack, and simple in structure, is easy to integrated.
To achieve the above object of the invention, the utility model proposes following technical scheme:
As can be seen from the above technical solutions, the utility model is controlled balanced loop by switch element simple in structure, and when battery reached the equilibrium point, battery formed the loop by switch element, heat-generating units, the form of unnecessary electric weight with heat distributed, make battery pack reach balanced.Of the present utility model simple in structure, be easy to integratedly, and can not impact output.
[description of drawings]
Fig. 1 is the structured flowchart of balanced unit in the utility model;
Fig. 2 is the circuit diagram of balanced unit among a kind of embodiment of the utility model;
Fig. 3 is the concrete circuit diagram of using of the utility model battery pack balancing device.
[embodiment]
Below in conjunction with specific embodiment the technical solution of the utility model is described in detail.
The utility model provides a kind of battery pack balancing device, comprise balanced unit, be used for battery is carried out balancing energy, as shown in Figure 1, described balanced unit comprises: switch element, link to each other with battery balanced control end, conducting when described control end detection cell voltage is outside setting range ends when described control end detection cell voltage is within setting range.Heat-generating units, the formation loop of connecting with described switch element, battery produces the heat electric weight that battery is unnecessary and distributes during by electric current.
Its course of work and principle are that in battery pack, when a certain battery reached the equilibrium point, balanced control end can be exported a control signal, such as high level signal.Switch element can comprise that generally semiconductor components and devices is such as triode, MOSFET or its combination, after receiving this control signal, triggering and conducting, at this moment, battery and heat-generating units, switch element form the loop, and the electric weight that cell body is unnecessary distributes with the form of heat.Under normal situation, switch element ends, and at this moment battery pack normally discharges and recharges.
When comprising a plurality of battery in the battery pack, corresponding, battery pack balancing device also comprises a plurality of balanced units, and the switch element of previous balanced unit links to each other with back one battery, and the switch element of last balanced unit is direct ground connection then.
As shown in Figure 2, in specific embodiment, described switch element comprises triode and MOSFET.Described transistor base links to each other with balanced control end, and collector electrode links to each other with the grid of MOSFET, and the drain electrode of described MOSFET links to each other with heat-generating units.Generally speaking, the source electrode of MOSFET can link to each other with the battery of next stage, and the source electrode of the MOSFET of afterbody balanced unit is ground connection directly.
Described heat-generating units generally can be a heating resistor.Among each embodiment, the resistance of described heating resistor is adjustable, is used to regulate euqalizing current, and then the control time for balance.
As shown in Figure 3, battery pack balancing device can be realized the multiple batteries equilibrium in charging and discharge process, be example with the 15th batteries, and the process and the principle of its work is described:
By scm software design, can be provided with specifically at charge balancing, or during discharging and recharging, all carry out equilibrium equilibrium.No matter in charging or in discharge process, when this cell voltage reaches charge balancing point, Single-chip Controlling pin (BTC1) output low level that it is corresponding, Q1 ends, the grid that is close to road P-MOSFET is a high level, the P-MOSFET conducting, and then this battery can pass through P-MOSFET, resistance R 1 forms discharge loop, the unnecessary electric weight of cell body can shed by the form of resistance with heat.Under the normal condition, its corresponding Single-chip Controlling pin (BTC1) output high level, the Q1 conducting, the grid that is close to road P-MOSFET is a low level, and P-MOSFET ends, and battery pack normally discharges and recharges.
Other each battery balanced principle is all identical therewith.Regulating loop resistance R E1 both can regulate euqalizing current, and then the control time for balance.
With the equalization discharge is example, and can set the minimum voltage of cell voltage is reference, when some cell voltage too high, both when A-battery voltage pressure reduction is too high, its bypass MOSFET can open, and cell reaches unanimity up to cell voltage by this loop low discharging current.When consistency reached the precision of scm software setting, single-chip microcomputer was just controlled and is stopped equilibrium.
The above embodiment has only expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
Claims (5)
1, a kind of battery pack balancing device is characterized in that, comprises balanced unit, is used for battery is carried out balancing energy, and described balanced unit comprises:
Switch element links to each other with battery balanced control end, and conducting when described control end detection cell voltage is outside setting range ends when described control end detection cell voltage is within setting range;
Heat-generating units, the formation loop of connecting with described switch element, battery produces the heat electric weight that battery is unnecessary and distributes during by electric current.
2, battery pack balancing device according to claim 1 is characterized in that, comprises at least two balanced units.
3, battery pack balancing device according to claim 1 and 2, it is characterized in that described switch element comprises: triode and MOSFET, described transistor base links to each other with balanced control end, collector electrode links to each other with the grid of MOSFET, and the drain electrode of described MOSFET links to each other with heat-generating units.
4, battery pack balancing device according to claim 1 and 2 is characterized in that, described heat-generating units comprises heating resistor.
5, battery pack balancing device according to claim 4 is characterized in that, the resistance of described heating resistor is adjustable, is used to regulate euqalizing current, and then the control time for balance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201719154U CN201113508Y (en) | 2007-09-25 | 2007-09-25 | Batteries equalizing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201719154U CN201113508Y (en) | 2007-09-25 | 2007-09-25 | Batteries equalizing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201113508Y true CN201113508Y (en) | 2008-09-10 |
Family
ID=39965253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201719154U Expired - Lifetime CN201113508Y (en) | 2007-09-25 | 2007-09-25 | Batteries equalizing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201113508Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101917038A (en) * | 2010-08-05 | 2010-12-15 | 惠州市亿能电子有限公司 | Charge balancing control method of power battery pack |
| CN103368228A (en) * | 2012-04-03 | 2013-10-23 | 罗伯特·博世有限公司 | Method for the resistive cell equalization of battery cells of a battery, a battery which is controlled in accordance with the method, and a motor vehicle |
| CN104092190A (en) * | 2014-07-28 | 2014-10-08 | 中投仙能科技（苏州）有限公司 | Trigger type lithium battery physical protector based on equalization |
| CN110417106A (en) * | 2019-07-26 | 2019-11-05 | 南方电网科学研究院有限责任公司 | A kind of low-power consumption self-powered relay of communication apparatus |
-
2007
- 2007-09-25 CN CNU2007201719154U patent/CN201113508Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101917038A (en) * | 2010-08-05 | 2010-12-15 | 惠州市亿能电子有限公司 | Charge balancing control method of power battery pack |
| CN101917038B (en) * | 2010-08-05 | 2014-01-15 | 惠州市亿能电子有限公司 | Charge balancing control method of power battery pack |
| CN103368228A (en) * | 2012-04-03 | 2013-10-23 | 罗伯特·博世有限公司 | Method for the resistive cell equalization of battery cells of a battery, a battery which is controlled in accordance with the method, and a motor vehicle |
| CN103368228B (en) * | 2012-04-03 | 2015-08-05 | 罗伯特·博世有限公司 | The storage battery of secondary battery unit resistance charge equalization method and control thereof and motor vehicle |
| US9252619B2 (en) | 2012-04-03 | 2016-02-02 | Robert Bosch Gmbh | Method for the resistive cell equalization of battery cells of a battery, a battery which is controlled in accordance with the method, and a motor vehicle |
| CN104092190A (en) * | 2014-07-28 | 2014-10-08 | 中投仙能科技（苏州）有限公司 | Trigger type lithium battery physical protector based on equalization |
| CN110417106A (en) * | 2019-07-26 | 2019-11-05 | 南方电网科学研究院有限责任公司 | A kind of low-power consumption self-powered relay of communication apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102185159B (en) | Basic unit lithium battery pack module, multistage lithium battery pack and charge and discharge equilibrium method | |
| CN1316710C (en) | Accumulator, super capacitor charge-discharge equalizing method and equipment | |
| CN101409455B (en) | Voltage balance apparatus and method for battery system | |
| CN107733007B (en) | Dual-target direct equalization circuit and equalization method for battery pack | |
| CN102647007A (en) | Battery pack balanced management system | |
| CN105226733A (en) | Active-passive hybrid equalization architecture and method for battery pack | |
| CN107579552A (en) | Battery pack balancing control method and device | |
| CN101976876A (en) | Device and method for equalizing batteries in charging process | |
| CN105356007A (en) | Battery pack preheating method and system thereof | |
| CN104300606A (en) | Multi-string battery protection system | |
| CN108432084A (en) | Balance charge/discharge method of serial battery group and circuit, direct current isolated buck circuit | |
| CN106080252B (en) | A kind of batteries of electric automobile group equalization methods | |
| CN202309117U (en) | Balanced system for storage battery pack | |
| CN110323801A (en) | A kind of energy-storage system battery module equalizing structure and control method | |
| CN201113508Y (en) | Batteries equalizing device | |
| CN211296261U (en) | Active voltage equalization circuit for lithium battery series connection electric core | |
| CN102185169A (en) | Charging method and charging device for lithium ion battery pack | |
| CN109193863A (en) | Battery voltage balance control method and circuit | |
| JP3419115B2 (en) | Battery charge / discharge protection device | |
| CN113054701A (en) | Built-in multi-battery parallel management system and management method thereof | |
| CN117318214A (en) | Battery pack high-voltage system and control method thereof | |
| CN112072734A (en) | Equalization system and method for liquid metal battery pack | |
| CN104167780B (en) | A kind of continuous controlled isolating active active equalization charging module and charge system thereof | |
| TWI635691B (en) | Battery pack active balancing system | |
| WO2018072384A1 (en) | Two-stage equalization charge system and equalization charge method for managing power battery set |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080910 |