CN105048576A - Circuit for realizing full-cycle charging and discharging of multiple battery packs - Google Patents
Circuit for realizing full-cycle charging and discharging of multiple battery packs Download PDFInfo
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- CN105048576A CN105048576A CN201510481507.8A CN201510481507A CN105048576A CN 105048576 A CN105048576 A CN 105048576A CN 201510481507 A CN201510481507 A CN 201510481507A CN 105048576 A CN105048576 A CN 105048576A
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- 238000007600 charging Methods 0.000 title claims abstract description 57
- 238000007599 discharging Methods 0.000 title claims abstract description 14
- 239000004065 semiconductor Substances 0.000 claims abstract description 68
- 238000001514 detection method Methods 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000005070 sampling Methods 0.000 abstract 2
- 229910044991 metal oxide Inorganic materials 0.000 abstract 1
- 150000004706 metal oxides Chemical class 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The invention discloses a circuit for realizing full-cycle charging and discharging of multiple battery packs. The circuit comprises a plurality of battery modules which are connected with one another in parallel, wherein each battery module comprises a battery, a charging metal oxide semiconductor (MOS) tube, a discharging MOS tube, a current detection module, a relay and a control module; each charging MOS tube, each discharging MOS tube, each current detection module, each relay and each battery are connected with one another in series; a voltage sampling input end of each control module is connected with the corresponding battery; a current sampling input end of each control module is connected with the corresponding current detection module; a first MOS tube control output end of each control module is connected with the corresponding charging MOS tube; and a second MOS tube control output end of each control module is connected with the corresponding discharging MOS tube. Through control on opening and closing of the charging MOS tubes and the discharging MOS tubes, the problem that multiple battery packs which are different in voltage level are charged and discharged by one another due to parallel connection is solved; and charging and discharging full-cycle processes of each battery module are realized under the condition that all battery modules are all in a parallel bus loop.
Description
Technical field
The present invention relates to a kind of circuit realizing multiple battery pack complete alternation discharge and recharge.
Background technology
Along with the consumption that is flourish, medium-sized, large-sized battery pack of electronic technology is increasing.And these battery pack production, test and use procedure in, many charging and discharging processes be used.
There is following shortcoming in existing charging device or discharge equipment:
1, battery pack needs to use the battery modules of same model to carry out parallel connection use, and battery pack namely in parallel requires that each cell voltage is identical, the battery modules of complete different type, electric pressure can not be carried out input and output in parallel.Because in battery pack, the difference between monomer always exists, and for capacity, its otherness is tending towards disappearing never, but progressively worsen.Same electric current is flow through in battery pack, comparatively speaking, the large person of capacity be always in small area analysis shallow fill shallowly to put, be tending towards capacity attenuation slowly, life, and the little person of capacity is always in big current super-charge super-discharge, is tending towards capacity attenuation quickening, the lost of life, performance parameter difference is increasing between the two, form positive feedback characteristic, low capacity premature failure, the group lost of life.
2, the discharge and recharge step of battery pack cannot reach the function of complete alternation, and the use of battery pack is bothered.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of simple, circuit realizing multiple battery pack complete alternation discharge and recharge that convenient operation, reliability are strong is provided, solve the problem that prior art cannot realize complete alternation discharge and recharge.
The object of the invention is to be achieved through the following technical solutions: a kind of circuit realizing multiple battery pack complete alternation discharge and recharge, comprises the battery modules of multiple parallel connection, described battery modules adopts positive and negative two line input and output; Described battery modules comprises battery, charging metal-oxide-semiconductor, electric discharge metal-oxide-semiconductor, current detection module, relay and control module, and described charging metal-oxide-semiconductor, electric discharge metal-oxide-semiconductor, current detection module, relay and serial battery form; The voltage sample input of described control module is connected with battery, the current sample input of control module is connected with current detection module, first metal-oxide-semiconductor control output end of control module is connected with charging metal-oxide-semiconductor, and the second metal-oxide-semiconductor control output end of control module is connected with electric discharge metal-oxide-semiconductor;
Wherein, in charging process, when control module detects the charging current through current detection module, electric discharge metal-oxide-semiconductor is placed in opening by control module, when control module detects that the voltage of battery reaches overdischarge thresholding, charging metal-oxide-semiconductor is placed in closed condition by control module; In discharge process, when control module detects the discharging current through current detection module, charging metal-oxide-semiconductor is placed in opening by control module, and when control module detects that the voltage of battery reaches overdischarge thresholding, electric discharge metal-oxide-semiconductor is placed in closed condition by control module.
Described current detection module comprises current sense resistor RSC.
Described battery modules is the battery modules of identical or dissimilar electric pressure.
Described relay is thermal relay RF.
The invention has the beneficial effects as follows:
(1) the present invention is not overcharging on the basis of only putting, solve with the opening and closing of electric discharge metal-oxide-semiconductor the problem that the meeting parallel with one another of multiple battery modules causes mutual discharge and recharge by controlling charging metal-oxide-semiconductor, or even the parallel connection of the battery modules of complete different type voltage grade.
(2) present invention achieves when all battery modules all in a bus bar circuit in parallel, export only have positive and negative two lines, each battery modules all can realize the total recycle process of charge and discharge: the charging metal-oxide-semiconductor after charge step completes is identical with the initial condition of discharge step with the open and-shut mode of electric discharge metal-oxide-semiconductor, and the charging metal-oxide-semiconductor in like manner after discharge step completes is identical with the initial condition of charge step with the open and-shut mode of electric discharge metal-oxide-semiconductor.
(3) the present invention also comprises a relay for the protection of battery modules, disconnects, have fail safe when electric current is excessive.
(4) the present invention is simple, convenient operation, and reliability is strong.
Accompanying drawing explanation
Fig. 1 is block diagram of the present invention;
Fig. 2 is battery modules circuit diagram;
Fig. 3 is that electric discharge completes equivalent circuit diagram;
Fig. 4 is charging complete equivalent circuit diagram;
Fig. 5 is circulation discharge flow path figure.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail: as shown in Figure 1, a kind of circuit realizing multiple battery pack complete alternation discharge and recharge, comprises the battery modules of multiple parallel connection, and described battery modules adopts positive and negative two line input and output; As shown in Figure 2, described battery modules comprises battery, charging metal-oxide-semiconductor, electric discharge metal-oxide-semiconductor, current detection module, relay and control module, and described charging metal-oxide-semiconductor, electric discharge metal-oxide-semiconductor, current detection module, relay and serial battery form; The voltage sample input of described control module is connected with battery, the current sample input of control module is connected with current detection module, first metal-oxide-semiconductor control output end of control module is connected with charging metal-oxide-semiconductor, and the second metal-oxide-semiconductor control output end of control module is connected with electric discharge metal-oxide-semiconductor;
Wherein, in charging process, when control module detects the charging current through current detection module, electric discharge metal-oxide-semiconductor is placed in opening by control module, when control module detects that the voltage of battery reaches overdischarge thresholding, charging metal-oxide-semiconductor is placed in closed condition by control module; In discharge process, when control module detects the discharging current through current detection module, charging metal-oxide-semiconductor is placed in opening by control module, and when control module detects that the voltage of battery reaches overdischarge thresholding, electric discharge metal-oxide-semiconductor is placed in closed condition by control module.
Described current detection module comprises current sense resistor RSC.
Described battery modules is the battery modules of identical or dissimilar electric pressure.
Concrete implementation comprises the following steps:
A, electric discharge:
S11: before discharge process, all charging metal-oxide-semiconductors are in closed condition, and all electric discharge metal-oxide-semiconductors are in opening, and all battery modules are got up by the diodes in parallel of the course of discharge that charging metal-oxide-semiconductor inside allows;
S12: start electric discharge, due to the relation of voltage competition, the battery modules that voltage is the highest is discharged at first; Control module is sampled to the electric current through current detection module, also samples to the voltage of battery:
(1) when control module detects the discharging current through current detection module, charging metal-oxide-semiconductor is placed in opening by control module, adds electric discharge sequence in parallel by this battery modules, avoids charging metal-oxide-semiconductor to bear discharging current; Until all charging metal-oxide-semiconductors are all in opening, realize all battery modules in parallel electric discharges;
(2) when control module detects that the voltage of battery reaches overdischarge thresholding, electric discharge metal-oxide-semiconductor is placed in closed condition by control module, and electric discharge metal-oxide-semiconductor now plays not overdischarge; Until all electric discharge metal-oxide-semiconductors are in closed condition, represent that all battery modules have all been discharged, equivalent circuit diagram as shown in Figure 3.
B, charging:
S21: before charging process, all charging metal-oxide-semiconductors are in opening, and all electric discharge metal-oxide-semiconductors are in closed condition, and all battery modules are all together in parallel by the diode in the charging direction that electric discharge metal-oxide-semiconductor inside allows;
S22: start charging, due to the relation of voltage competition, first charging current enters the minimum battery modules of voltage; Control module is sampled to the electric current through current detection module, also samples to the voltage of battery:
(1) when control module detects the charging current through current detection module, electric discharge metal-oxide-semiconductor is placed in opening by control module, adds charging sequence in parallel by this battery modules; Until all electric discharge metal-oxide-semiconductors are all in opening, realize all battery modules in parallel chargings;
(2) when control module detects that the voltage of battery reaches overcharge thresholding, charging metal-oxide-semiconductor is placed in closed condition by control module, and charging metal-oxide-semiconductor now plays not overcharge; Until all charging metal-oxide-semiconductors are in closed condition, represent that all battery modules bulk charges complete, equivalent circuit diagram as shown in Figure 4.
After electric discharge completes, charging metal-oxide-semiconductor is in opening, and electric discharge metal-oxide-semiconductor is in closed condition, identical with the initial condition of the metal-oxide-semiconductor that discharges with the charging metal-oxide-semiconductor required for charge battery step.
In like manner, after charging complete, electric discharge metal-oxide-semiconductor is in opening, and charging metal-oxide-semiconductor is in closed condition, identical with the initial condition of the metal-oxide-semiconductor that discharges with the charging metal-oxide-semiconductor required for battery discharge step.
Therefore discharge and recharge complete alternation can be realized, as shown in Figure 5.
Described relay is thermal relay RF.
In the process of charging and discharging, certain controls the electric current of module once excessive, and thermal relay RF disconnects automatically, protects this battery modules.
Claims (4)
1. realize a circuit for multiple battery pack complete alternation discharge and recharge, it is characterized in that: the battery modules comprising multiple parallel connection, described battery modules adopts positive and negative two line input and output; Described battery modules comprises battery, charging metal-oxide-semiconductor, electric discharge metal-oxide-semiconductor, current detection module, relay and control module, and described charging metal-oxide-semiconductor, electric discharge metal-oxide-semiconductor, current detection module, relay and serial battery form; The voltage sample input of described control module is connected with battery, the current sample input of control module is connected with current detection module, first metal-oxide-semiconductor control output end of control module is connected with charging metal-oxide-semiconductor, and the second metal-oxide-semiconductor control output end of control module is connected with electric discharge metal-oxide-semiconductor;
Wherein, in charging process, when control module detects the charging current through current detection module, electric discharge metal-oxide-semiconductor is placed in opening by control module, when control module detects that the voltage of battery reaches overdischarge thresholding, charging metal-oxide-semiconductor is placed in closed condition by control module; In discharge process, when control module detects the discharging current through current detection module, charging metal-oxide-semiconductor is placed in opening by control module, and when control module detects that the voltage of battery reaches overdischarge thresholding, electric discharge metal-oxide-semiconductor is placed in closed condition by control module.
2. a kind of circuit realizing multiple battery pack complete alternation discharge and recharge according to claim 1, is characterized in that: described current detection module comprises current sense resistor RSC.
3. a kind of circuit realizing multiple battery pack complete alternation discharge and recharge according to claim 1, is characterized in that: described battery modules is the battery modules of identical or dissimilar electric pressure.
4. a kind of circuit realizing multiple battery pack complete alternation discharge and recharge according to claim 1, is characterized in that: described relay is thermal relay RF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510481507.8A CN105048576B (en) | 2015-08-03 | 2015-08-03 | A kind of circuit for realizing multiple battery pack complete alternation discharge and recharges |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510481507.8A CN105048576B (en) | 2015-08-03 | 2015-08-03 | A kind of circuit for realizing multiple battery pack complete alternation discharge and recharges |
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| CN105048576A true CN105048576A (en) | 2015-11-11 |
| CN105048576B CN105048576B (en) | 2017-08-08 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5890780A (en) * | 1996-10-07 | 1999-04-06 | Nec Corporation | Power supply switching apparatus with protection function for supplying power to an electronic circuit via an external power source or an internal power supply source |
| CN1372364A (en) * | 2001-02-20 | 2002-10-02 | 精工电子有限公司 | Controller for electricity recharge/discharge |
| CN204179729U (en) * | 2014-11-25 | 2015-02-25 | 中航锂电（洛阳）有限公司 | A kind of communication discrete lithium battery back-up source |
-
2015
- 2015-08-03 CN CN201510481507.8A patent/CN105048576B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5890780A (en) * | 1996-10-07 | 1999-04-06 | Nec Corporation | Power supply switching apparatus with protection function for supplying power to an electronic circuit via an external power source or an internal power supply source |
| CN1372364A (en) * | 2001-02-20 | 2002-10-02 | 精工电子有限公司 | Controller for electricity recharge/discharge |
| CN204179729U (en) * | 2014-11-25 | 2015-02-25 | 中航锂电（洛阳）有限公司 | A kind of communication discrete lithium battery back-up source |
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| CN105048576B (en) | 2017-08-08 |
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Effective date of registration: 20200610 Address after: 835000 E Factory Building of Huining Road 999 Small and Medium-sized Enterprise Business Incubation Park, Holgos Economic Development Zone, Yili Kazakh Autonomous Prefecture, Xinjiang Uygur Autonomous Region (1st floor and interlayer) Patentee after: Xinjiang SMEI new energy Co.,Ltd. Address before: High tech Zone Gaopeng road in Chengdu city of Sichuan province 610017 5 block A No. 2 public platform Secretary A-301 Patentee before: SICHUAN NEW ENERGY EXCHANGE TECHNOLOGY Co.,Ltd. |