CN105048573A - Circuit for realizing full-cycle charging and discharging of different battery packs - Google Patents
Circuit for realizing full-cycle charging and discharging of different battery packs Download PDFInfo
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- CN105048573A CN105048573A CN201510481252.5A CN201510481252A CN105048573A CN 105048573 A CN105048573 A CN 105048573A CN 201510481252 A CN201510481252 A CN 201510481252A CN 105048573 A CN105048573 A CN 105048573A
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Abstract
The invention discloses a circuit for realizing full-cycle charging and discharging of different battery packs. The circuit comprises a plurality of battery modules connected in parallel, wherein each battery module adopts a positive line and a negative line for input and output and comprises a battery, a charging metal oxide semiconductor (MOS) tube, a discharging MOS tube, a current detection module and a control module, the charging MOS tube, the discharging MOS tube, the current detection module and the battery are connected in series; a voltage sampling input end of the control module is connected with the battery, a current sampling input end of the control module is connected with the current detection module, a first MOS tube control output end of the control module is connected with the charging MOS tube, and a second MOS tube control output end of the control module is connected with the discharging MOS tube. By controlling the on/off of the charging MOS tube and the discharging MOS tube, the problem of mutual charging and discharging caused by mutual parallel connection of battery modules with different types of voltage classes is solved, and moreover, the full-cycle process of charging and discharging of each battery module is achieved on the condition that all battery modules are in a parallelly-connected bus loop.
Description
Technical field
The present invention relates to a kind of circuit realizing different 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 circuit of simple, realization that convenient operation, reliability are strong different battery pack complete alternation discharge and recharge is provided, solves 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 different 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 and control module, and described charging metal-oxide-semiconductor, electric discharge metal-oxide-semiconductor, current detection module 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.
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 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 different 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 and control module, and described charging metal-oxide-semiconductor, electric discharge metal-oxide-semiconductor, current detection module 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.
Claims (3)
1. realize a circuit for different 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 and control module, and described charging metal-oxide-semiconductor, electric discharge metal-oxide-semiconductor, current detection module 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 different 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 different 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510481252.5A CN105048573B (en) | 2015-08-03 | 2015-08-03 | A kind of circuit for realizing different battery pack complete alternation discharge and recharges |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510481252.5A CN105048573B (en) | 2015-08-03 | 2015-08-03 | A kind of circuit for realizing different battery pack complete alternation discharge and recharges |
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| CN105048573A true CN105048573A (en) | 2015-11-11 |
| CN105048573B CN105048573B (en) | 2017-12-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI710197B (en) * | 2019-12-25 | 2020-11-11 | 王進和 | Battery module with a hot swap function and control method thereof |
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|---|---|---|---|---|
| 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 |
| CN101499648A (en) * | 2008-02-01 | 2009-08-05 | 株式会社理光 | Semiconductor device for protecting secondary battery, battery pack, and electronic device using same |
| 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 CN201510481252.5A patent/CN105048573B/en active Active
Patent Citations (4)
| 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 |
| CN101499648A (en) * | 2008-02-01 | 2009-08-05 | 株式会社理光 | Semiconductor device for protecting secondary battery, battery pack, and electronic device using same |
| 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI710197B (en) * | 2019-12-25 | 2020-11-11 | 王進和 | Battery module with a hot swap function and control method thereof |
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| CN105048573B (en) | 2017-12-01 |
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