CN202906517U - Rapid equalizing charge device for battery pack - Google Patents
Rapid equalizing charge device for battery pack Download PDFInfo
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- CN202906517U CN202906517U CN 201220518831 CN201220518831U CN202906517U CN 202906517 U CN202906517 U CN 202906517U CN 201220518831 CN201220518831 CN 201220518831 CN 201220518831 U CN201220518831 U CN 201220518831U CN 202906517 U CN202906517 U CN 202906517U
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- battery
- power supply
- battery pack
- charge power
- charging device
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Abstract
The utility model discloses a rapid equalizing charge device for a battery pack, comprising a battery pack formed by series connection of at least two battery sub-packs, a main charge power supply connected to two ends of the battery pack and used for charging the battery pack, and a battery management system for detecting voltage values of the two ends of each battery sub-pack and controlling work of the main charge power supply, the rapid equalizing charge device further comprises an auxiliary charge power supply, the auxiliary charge power supply is respectively connected with each battery sub-pack via a switch element, and the battery management system is connected with the switch element. The rapid equalizing charge device is advantageous in that, via cooperative use of the main charge power supply and the auxiliary charge power supply, equalizing charge of each battery sub-pack is performed, each battery sub-pack is guaranteed to be charged fully, effective capacity of the battery pack is increased, service lifetime of the batter pack is prolonged; charge time of the battery pack can be accelerated, and charge of a high-voltage battery pack in series via a low-voltage power supply can be realized.
Description
Technical field
The utility model relates to battery charger, is specifically related to a kind of power battery pack fast uniform charging device.
Background technology
Along with International Crude Oil skyrockets, the research of various novel energies becomes the focus of public attention.Electric energy is used widely at various vehicles as power source.Lithium battery with have higher energy quality than and the energy volume ratio, memory-less effect, but recharge often, the first-selection that advantage becomes dynamic power such as grows useful life.
As a kind of new type power technology, lithium battery in use must series connection just can reach the demand of using voltage, monomer performance uneven not entirely because of the battery production technical problem, voltage when even every battery dispatches from the factory, internal resistance is in full accord, and the difference that continuous charge and discharge cycles causes will make the capacity of some cell accelerate decay, the capacity of series battery is to be determined by the minimum capacity of cell, so these differences will make shorten the useful life of battery pack.
Serial connection charge is generally all adopted in the at present charging of lithium ion battery group, and this mainly is because the serial connection charge method is simple in structure, cost is low, be easier to realization.But since between the monomer lithium ion battery in the difference of the aspect of performances such as capacity, internal resistance, attenuation characteristic, self discharge, to lithium ion battery group serial connection charge the time, that monomer lithium ion battery of capacity minimum will be full of electricity at first in the battery pack, and this moment, other batteries also are not full of electricity, if the continuation serial connection charge, the monomer lithium ion battery that then has been full of electricity just may be overcharged.
And the performance that lithium ion battery overcharges meeting grievous injury battery; even may cause the blast personnel that cause to injure; therefore; overcharge in order to prevent monomer lithium ion battery; when using, the lithium ion battery group generally is furnished with battery management system (Battery Management System; be called for short BMS), by battery management system to protections such as each monomer lithium ion battery overcharge.During serial connection charge; if there is the voltage of a monomer lithium ion battery to reach over-charge protective voltage, battery management system can with whole serial connection charge circuitry cuts, stop charging; preventing that this cell from being overcharged, and can cause like this other lithium ion batteries can't be full of electricity.This becomes technical problem in the urgent need to address so that solve the power battery charging technical problem.
The utility model content
For the deficiencies in the prior art, the purpose of this utility model is intended to provide a kind of battery pack fast uniform charging device, it is when realizing each battery subgroup equalizing charge of battery pack, realization is full of fast to battery pack, and has also realized utilizing the low-voltage charge power supply to charge for the high-voltage battery group of series connection separately.
For achieving the above object, the utility model adopts following technical scheme:
Battery pack fast uniform charging device, it comprises the battery pack that at least two battery subgroups are connected in series, be connected in the main charge power supply that the battery pack two ends are used to described batteries charging, and for detection of the magnitude of voltage at each battery subgroup two ends and the main charge power supply work whether battery management system of control, described battery pack fast uniform charging device further comprises an auxiliary charge power supply, described auxiliary charge power supply is connected respectively with each battery subgroup by switch element, and battery management system links to each other with switch element.
Realize that a kind of execution mode of the present utility model is: described switch element is corresponding one by one with the battery subgroup.
Realize that a kind of execution mode of the present utility model is: described switch element is any in transistor, metal-oxide-semiconductor, optoelectronic switch, relay, the photoelectrical coupler.
Realize that a kind of execution mode of the present utility model is: described battery subgroup is single rechargeable battery.
Realize that a kind of execution mode of the present utility model is: described battery subgroup is at least two rechargeable batteries that are connected in series.
Realize that a kind of execution mode of the present utility model is: described auxiliary charge power supply is one or more in solar charger, wind charger and the fuel cell.
Realize that a kind of execution mode of the present utility model is: described battery pack fast uniform charging device further comprises a temperature sampling controller, and the input of described temperature sampling controller links to each other respectively with each battery subgroup, and its output is connected to main charge power supply.
Realize that a kind of execution mode of the present utility model is: described battery pack fast uniform charging device further comprises a display screen, and described display screen is connected in the output of battery management system.
Realize that a kind of execution mode of the present utility model is: described battery pack fast uniform charging device further comprises one the 3rd charge power supply, and described the 3rd charge power supply is connected respectively with each battery subgroup, and battery management system links to each other with described the 3rd charge power supply.
Realize that a kind of execution mode of the present utility model is: described the 3rd charge power supply is one or more in solar charger, wind charger and the fuel cell.
Than prior art, the utility model carries out serial connection charge by main charge power supply to whole battery pack, battery management system detects the voltage at each battery subgroup two ends, when reaching certain value, disconnect main charge power supply, start auxiliary charge power supply to one or more startup chargings of magnitude of voltage minimum in each battery subgroup, the effect of its realization is:
1, each battery subgroup equalizing charge can increase the available capacity of battery pack so that each battery subgroup all can be filled, and has prolonged the useful life of battery pack;
2, auxiliary charge power supply can be worked with main charge power supply simultaneously, at this moment, when battery management system is controlled main charge power supply and auxiliary charge power supply is worked simultaneously, when the battery subgroup voltage of one of them reaches the voltage of battery management system setting, disconnect main charge power supply and drive auxiliary charge power supply according to the voltage of each battery subgroup and begin charging from minimum single or multiple battery subgroups, until till all battery subgroups all were filled, it had accelerated the charging interval of battery pack;
3, auxiliary charge power supply adopts one or more in solar charger, wind charger and the fuel cell, can set up this auxiliary charge power supply at power set (such as electric automobile etc.), can charge to battery pack at any time, strengthen the application space of power set;
4, auxiliary charge power supply can adopt lower voltage to be separately the high-voltage battery group charging of series connection, and the preparation before can be used as battery and filling soon to be strengthening the speed of filling soon of battery pack, increase capacity and prolong the battery pack life-span;
5, adopt the 3rd charge power supply to carry out simultaneously auxiliary charging, can further accelerate the charging interval of battery pack.
Description of drawings
Fig. 1 is the structural representation of the utility model battery pack fast uniform charging device embodiment one;
Fig. 2 is the structural representation of the utility model battery pack fast uniform charging device embodiment two.
Wherein: 11, rechargeable battery; 12, rechargeable battery; 13, rechargeable battery; 14, rechargeable battery; 2, battery management system; 3, main charge power supply; 4, auxiliary charge power supply; 5, switch element; 51, switch element; 52, switch element; 53, switch element; 54, switch element; 6, the 3rd charge power supply; 61, charge power supply; 62, charge power supply; 63, charge power supply; 64, charge power supply.
Embodiment
Below, by reference to the accompanying drawings and embodiment, the utility model is described further:
Embodiment one
As shown in Figure 1, embodiment one as the utility model battery pack fast uniform charging device, it comprises the battery pack that at least two battery subgroups are connected in series, be connected in the main charge power supply 3 that the battery pack two ends are used to described batteries charging, and the battery management system 2 of whether working for detection of the magnitude of voltage at each battery subgroup two ends and the main charge power supply 3 of control, battery pack fast uniform charging device also comprises an auxiliary charge power supply 4, auxiliary charge power supply 4 is connected respectively with each battery subgroup by switch element 5, and battery management system 2 links to each other with switch element 5.
The battery subgroup can be single rechargeable battery; also can be that at least two rechargeable batteries are connected in series and form; in the present embodiment, battery pack adopts four battery subgroups, the battery subgroup take single rechargeable battery as example is explained and illustrated protection range of the present utility model.Wherein the battery subgroup is respectively rechargeable battery 11, rechargeable battery 12, rechargeable battery 13, rechargeable battery 14.
Charging modes can be three kinds:
The one, main charge power supply 3 is worked first, battery management system 2 in real time or regularly (for example per 5 ~ 10 seconds) detects the voltage at each rechargeable battery two ends, when the voltage at certain rechargeable battery two ends reaches the setting voltage (generally being equal to or slightly less than the battery rated voltage) of battery management system, the main charge power supply 3 of battery management system 2 controls quits work, simultaneously and start auxiliary charge power supply 4 and begin certain or some rechargeable batteries are charged, wherein, above-mentioned certain or some rechargeable battery are one or several of voltage minimum in the battery pack, therefore the switch element 5 that needs to arrange can be one, also can be a plurality of, in the utility model preferred embodiment, switch element 5 adopts the quantity that equates with the battery subgroup, be that switch element 5 comprises the switch element 51 corresponding with rechargeable battery 11, the switch element 52 corresponding with rechargeable battery 12, the switch element 53 corresponding with rechargeable battery 13, the switch element 54 corresponding with rechargeable battery 14, by controlling cut-offfing of wherein one or more switch elements, and then realize charging to certain or some battery subgroups, then detect in real time or regularly the variation of the voltage at each rechargeable battery two ends according to battery management system 2, still the single or multiple rechargeable batteries with the minimum voltage value begin, continue charging, until till all rechargeable batteries all are full of;
The 2nd, main charge power supply 3 and auxiliary charge power supply 4 are worked simultaneously, at this moment, switch element 5 all is in conducting state, this mode can be accelerated the charging rate of rechargeable battery, in like manner, when the voltage that detects in real time or regularly one of them rechargeable battery two ends when battery management system 2 reaches its set point, disconnect main charge power supply 3, simultaneously optionally disconnect wherein switch element 5 according to the magnitude of voltage of each rechargeable battery, make auxiliary charge power supply begin cycle charging from minimum one or more rechargeable batteries, until all rechargeable batteries all are filled till the electricity;
The 3rd, auxiliary charge power supply 4 is charged to the minimum single or multiple rechargeable batteries that battery management system 2 detects first, until the voltage of each rechargeable battery when equating, is opened separately main charge power supply 3 or is opened simultaneously main charge power supply 3 and auxiliary charge power supply 4 is batteries charging.
Wherein, auxiliary charge power supply 4 can adopt one or more in solar charger, wind charger and the fuel cell, can set up this auxiliary charge power supply at power set (such as electric automobile etc.), can be at any time to charging for the battery pack of power set power supply, strengthen the application space of power set, prolonged the operating range of these power set.
The utility model can also adopt the auxiliary charge power supply 4 of independent low-voltage to charge for the high-voltage battery group of series connection, what for example electric automobile used is the 96V motor, battery core is that the rechargeable battery by 4 24V is in series, if when needing solar charger to drive, the voltage of solar charger needs at least, and 120V just can charge to this battery, the 120V solar charger then needs 240 cell pieces to be in series, such structure is that so large usable area impossible be arranged at mobile vehicle top, so, just can satisfy their demand with our charging panel.Specifically we can scan first the rechargeable battery of 4 series connection, and the low-voltage rechargeable battery that scans again in the battery pack is isolated charging, and so we only need the solar panels of 12V to charge to battery system.Certainly adopt the mode of above-mentioned isolation scanning to be full of whole battery pack and then need time of growing.And if the solar panels of several 12V output current simultaneously how also is good solution, especially the solar energy sheet of flexible foldable can obtain better application as charge power supply in this battery pack fast uniform charging device.
Preferred version as present embodiment, switch element 5 is any in transistor, metal-oxide-semiconductor, optoelectronic switch, relay, the photoelectrical coupler, certainly, each switch element can be selected different structures, by cooperating of battery management system 2 or battery management system 2 and auxiliary charge power supply 4, control the work of each switch element.
Preferred version as present embodiment, can also in this battery pack fast uniform charging device, set up a temperature sampling controller (not shown), the input of this temperature sampling controller links to each other respectively with each battery subgroup, its output is connected to main charge power supply, the temperature sampling controller can combine with above-mentioned battery management system 2, main charge power supply 3 is controlled, when certain battery subgroup reaches certain temperature, for guaranteeing the useful life of battery subgroup, needing to disconnect main charge power supply charges to battery pack after 3 a period of times again, because auxiliary charge power supply 4 adopts small electric stream that each battery subgroup is charged, therefore, the heat that produces when the battery subgroup is charged by it is very little, can ignore.
In addition, preferred version as present embodiment, output at battery management system 2 can also connect a display screen (not shown), the magnitude of voltage that can show in real time each rechargeable battery by this display screen, simultaneously, this display screen also can link to each other with the output of above-mentioned temperature sampling controller, and the temperature of each rechargeable battery is intuitively shown.
Embodiment two
Embodiment two has set up the 3rd charge power supply 6 on the basis of embodiment one, adopt four battery subgroups with battery pack equally, the battery subgroup is take single rechargeable battery as example, the 3rd charge power supply 6 can be charged to each rechargeable battery simultaneously, namely the 3rd charge power supply 6 is included as the charge power supply 61 of rechargeable battery 11 chargings, charge power supply 62 for rechargeable battery 12 chargings, charge power supply 63 for rechargeable battery 13 chargings, charge power supply 64 for rechargeable battery 14 chargings, and the 3rd charge power supply 6 is also controlled by battery management system 2, the 3rd charge power supply 6 is opened simultaneously with main charge power supply 3, and when closing, can with main charge power supply 3 simultaneously, also can be later than the disconnection of main charge power supply 3, the specific works mode of main charge power supply 3 and auxiliary charge power supply 4 is identical with embodiment one.The purpose of setting up the 3rd charge power supply 6 is further to accelerate the charging rate of battery pack, simultaneously, the 3rd charge power supply 6 can adopt one or more in solar charger, wind charger and the fuel cell, also can be in the situation that adopts main charge power supply 3 charging difficulties, adopt the 3rd charge power supply 6 to charge, in order to needing temporarily.
For a person skilled in the art, can make other various corresponding changes and distortion according to technical scheme described above and design, and these all changes and distortion should belong within the protection range of the utility model claim all.
Claims (10)
1. battery pack fast uniform charging device, it comprises the battery pack that at least two battery subgroups are connected in series, be connected in the main charge power supply that the battery pack two ends are used to described batteries charging, and for detection of the magnitude of voltage at each battery subgroup two ends and the main charge power supply work whether battery management system of control, it is characterized in that, described battery pack fast uniform charging device further comprises an auxiliary charge power supply, described auxiliary charge power supply is connected respectively with each battery subgroup by switch element, and battery management system links to each other with switch element.
2. battery pack fast uniform charging device as claimed in claim 1 is characterized in that, described switch element is corresponding one by one with the battery subgroup.
3. battery pack fast uniform charging device as claimed in claim 2 is characterized in that, described switch element is any in transistor, metal-oxide-semiconductor, optoelectronic switch, relay, the photoelectrical coupler.
4. battery pack fast uniform charging device as claimed in claim 2 is characterized in that, described battery subgroup is single rechargeable battery.
5. battery pack fast uniform charging device as claimed in claim 2 is characterized in that, described battery subgroup is at least two rechargeable batteries that are connected in series.
6. battery pack fast uniform charging device as claimed in claim 1 is characterized in that, described auxiliary charge power supply is one or more in solar charger, wind charger and the fuel cell.
7. such as each described battery pack fast uniform charging device of claim 1-6, it is characterized in that, described battery pack fast uniform charging device further comprises a temperature sampling controller, the input of described temperature sampling controller links to each other respectively with each battery subgroup, and its output is connected to main charge power supply.
8. battery pack fast uniform charging device as claimed in claim 7 is characterized in that, described battery pack fast uniform charging device further comprises a display screen, and described display screen is connected in the output of battery management system.
9. battery pack fast uniform charging device as claimed in claim 7, it is characterized in that, described battery pack fast uniform charging device further comprises one the 3rd charge power supply, and described the 3rd charge power supply is connected respectively with each battery subgroup, and battery management system links to each other with described the 3rd charge power supply.
10. battery pack fast uniform charging device as claimed in claim 9 is characterized in that, described the 3rd charge power supply is one or more in solar charger, wind charger and the fuel cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220518831 CN202906517U (en) | 2012-10-10 | 2012-10-10 | Rapid equalizing charge device for battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220518831 CN202906517U (en) | 2012-10-10 | 2012-10-10 | Rapid equalizing charge device for battery pack |
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| Publication Number | Publication Date |
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| CN202906517U true CN202906517U (en) | 2013-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220518831 Expired - Lifetime CN202906517U (en) | 2012-10-10 | 2012-10-10 | Rapid equalizing charge device for battery pack |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103795123A (en) * | 2014-02-19 | 2014-05-14 | 成都芝田高分子材料有限公司 | Intelligent battery management system based on supercapacitor active equalization |
| CN105182058A (en) * | 2015-09-24 | 2015-12-23 | 重庆乐成基业科技有限公司 | Battery pack single battery voltage detection device |
-
2012
- 2012-10-10 CN CN 201220518831 patent/CN202906517U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103795123A (en) * | 2014-02-19 | 2014-05-14 | 成都芝田高分子材料有限公司 | Intelligent battery management system based on supercapacitor active equalization |
| CN103795123B (en) * | 2014-02-19 | 2016-08-24 | 成都芝田高分子材料有限公司 | A kind of Intelligent battery management system based on ultracapacitor active equalization |
| CN105182058A (en) * | 2015-09-24 | 2015-12-23 | 重庆乐成基业科技有限公司 | Battery pack single battery voltage detection device |
| CN105182058B (en) * | 2015-09-24 | 2018-10-16 | 重庆乐成基业科技有限公司 | Battery cells voltage check device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151118 Address after: 361000 Fujian province Xiamen software park two sunrise Road No. 26 304 unit two Patentee after: XIAMEN HUAFANG SOFTWARE TECHNOLOGY Co.,Ltd. Address before: China Taiwan Taoyuan County Patentee before: Gao Rongsheng |
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| CX01 | Expiry of patent term |
Granted publication date: 20130424 |
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| CX01 | Expiry of patent term |