CN105429275A - Automatically switched battery pack - Google Patents
Automatically switched battery pack Download PDFInfo
- Publication number
- CN105429275A CN105429275A CN201510901796.2A CN201510901796A CN105429275A CN 105429275 A CN105429275 A CN 105429275A CN 201510901796 A CN201510901796 A CN 201510901796A CN 105429275 A CN105429275 A CN 105429275A
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- CN
- China
- Prior art keywords
- battery
- circuit
- short
- comparator
- coupled
- 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.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/36—Arrangements using end-cell switching
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
-
- 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 invention provides an automatically switched battery pack, which comprises n batteries, n short-circuit switches and n short-circuit control circuits, wherein the n batteries are connected with one another in series; n is a natural number; the n short-circuit switches are connected with the corresponding batteries in parallel; the n short-circuit control circuits are coupled to the corresponding batteries in parallel; each short-circuit control circuit receives voltages at two ends of the corresponding battery, and provides control signals to connect or disconnect the corresponding short-circuit switch according to the voltages at two ends of the corresponding battery; each short-circuit control circuit comprises a comparator and a bias circuit; each comparator comprises an in-phase input end, an inverting input end and an output end; each bias circuit comprises a positive end and a negative end; the positive end of each bias circuit is coupled to the in-phase input end of each comparator; each battery and each short-circuit switch are coupled between the in-phase input end of each comparator and the negative end of each bias circuit in parallel; and each short-circuit switch comprises a control end which is coupled to the output end of each comparator. According to the battery pack provided by the invention, the battery which runs out or is damaged in the battery pack is in a short circuit; and the service time of the battery pack is prolonged.
Description
Technical field
The present invention relates to electronic technology field, particularly a kind of battery.
Background technology
Battery (Battery) refers to fill electrolyte solution and metal electrode with the segment space of the cup of generation current, groove or other containers or clad vessel, chemical energy can be become the device of electric energy, have positive pole, negative pole point.Along with the progress of science and technology, battery general reference can produce the midget plant of electric energy, as fuel cell, dry cell, lead accumulator, solar cell.Utilize battery as energy source, can obtain that there is burning voltage, stabling current, long-time stable is powered, by the electric current that ectocine is very little, and battery structure is simple, easy to carry, discharge and recharge is easy to operation, is not subject to the impact of outside climatic and temperature, stable and reliable for performance, the various aspects in modern society's life play great role.
Fuel cell is a kind of device chemical energy of fuel directly being changed into electric energy through electrochemical reaction.Fuel cell is that what to utilize hydrogen to carry out at anode is oxidation reaction, hydrogen-oxygen is changed into hydrogen ion, and oxygen carries out reduction reaction at negative electrode, is combined generates water with the hydrogen ion transmitted by anode, just can generation current in redox reaction process.Fuel cell comprises alkaline fuel cell (AFC), phosphoric acid fuel cell (PAFC), Proton Exchange Membrane Fuel Cells (PEMFC), molten carbonate fuel cell (MCFC), solid-oxide fuel cell (SOFC), and direct methanol fuel cell (DMFC) etc.
Conventional a kind of dry cell is carbon-zinc dry cell, negative pole is the cylinder that zinc does, inside have ammonium chloride as electrolyte, the paste electrolyte of a small amount of zinc chloride, inert filler and water furnishing, positive pole is the carbon-point that surrounding wraps up in be mixed with the paste electrolyte of manganese dioxide.Electrode reaction is: negative pole place zinc atom becomes zinc ion (Zn++), disengages electronics, and positive pole place ammonium ion (NH4+) obtains electronics and becomes ammonia and hydrogen, and drive away hydrogen to eliminate polarization with manganese dioxide, electromotive force is about 1.5 volts.
Fuel cell is a kind of device chemical energy that fuel discharges in combustion being directly changed into electric energy.With storage battery difference, be that it can from outside respectively to two electrode zones postcombustion and oxidant and do not need charging continuously.Fuel cell is made up of four parts such as fuel (such as hydrogen, methane etc.), oxidant (such as oxygen and air etc.), electrode and electrolyte, and its electrode has catalytic performance, and is loose structure, to ensure larger active area.During work, fuel is passed into negative pole, oxidant passes into positive pole, carries out electrochemical reaction to obtain electric energy under the catalysis of their each comfortable electrodes.
Lead accumulator is the most conventional, and its pole plate is the grid made with lead alloy, and electrolyte is dilute sulfuric acid, two-plate is all coated with lead sulfate, but after charging, on positive pole place pole plate, lead sulfate is transformed into brown lead oxide, negative pole place lead sulfate is transformed into metallic lead, during electric discharge, then reciprocal chemical reaction occurs.
The stable operating voltage of lead accumulator, serviceability temperature and use current range wide, can discharge and recharge hundreds of circulations, shelf characteric good (being particularly suited for dry battery unit storage), cost lower, be thus widely used.Adopt NEW Pb alloy and electrolyte to add nano carbon sol, the performance of lead accumulator can be improved.As made grid with lead-calcium alloy, the minimum floating current of lead accumulator can be ensured, reduce and add the water yield and extend its useful life; Adopt plumbous lithium alloy to cast positive grid, then can reduce self discharge and meet the needs sealed.In addition, open type lead accumulator progressively will change sealed type into, and develops acid-proof, explosion-proof type and the hydrogen formula lead accumulator that disappears.
The electromotive force of lead accumulator is about 2 volts, and conventional series system forms the batteries of 6 volts or 12 volts.During battery discharge, sulfuric acid concentration reduces, and can judge whether storage battery can terminate the need of charging or charging process by the method surveying electrolyte density.When the advantage of lead accumulator is electric discharge, electromotive force is more stable, and shortcoming is that specific energy (Unit Weight institute electric power storage energy) is little, strong to corrosiveness of the environment.
Battery pack generally comprises the battery that multi-section serial connects, but when a certain joint in battery pack or a few batteries power depletion or when damaging, the resistance of this battery will become very large.If continue to be connected in series to system power supply with other normal battery, this battery by lot of energy, thus reduces efficiency, shortens the service time of battery pack.
Summary of the invention
The present invention proposes a kind of battery pack of automatic switchover, and when solving a certain joint or a few batteries power depletion in existing battery pack or damage, the resistance of this battery will become very large problem.
Technical scheme of the present invention is achieved in that
A battery pack for automatic switchover, comprising: n the battery be connected in series, and wherein n is natural number; N the shorting switch be connected in parallel with respective battery; And with n short circuit control circuit of respective battery coupled in parallel, wherein said each short circuit control circuit receives respective battery both end voltage, and provides control signal according to respective battery both end voltage, in order to be turned on or off by corresponding shorting switch; Described short circuit control circuit comprises: comparator, has in-phase input end, inverting input and output; Biasing circuit, has anode and negative terminal, and its anode is coupled to the in-phase input end of comparator; Wherein said battery and shorting switch coupled in parallel are between the in-phase input end and the negative terminal of biasing circuit of comparator, and described shorting switch comprises the control end being coupled to described comparator output terminal; Described shorting switch is mosfet transistor.
The invention has the beneficial effects as follows:
The battery that in short circuit battery pack, electricity exhausts or damages, extends the service time of battery pack.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the control circui block diagram of the battery pack of a kind of automatic switchover of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, the battery pack of a kind of automatic switchover of the present invention, battery pack 117 comprise battery that n is connected in series (211,221 ..., 2n1), wherein n is natural number; N shorting switch being connected in parallel with respective battery (212,222 ..., 2n2); And with n short circuit control circuit of respective battery coupled in parallel (213,223 ..., 2n3), described each short circuit control circuit receives respective battery both end voltage, and provide control signal according to respective battery both end voltage, in order to corresponding shorting switch is turned on or off, thus when respective battery both end voltage is very low by this battery short circuit.
Short circuit control circuit in Fig. 1 (213,223 ..., 2n3) structure is identical.
Short circuit control circuit 213 comprises: comparator 2101, has in-phase input end, inverting input and output; Biasing circuit 2102, has anode and negative terminal, and its anode is coupled to the in-phase input end of comparator 2101; Wherein battery 211 and shorting switch 212 coupled in parallel are between the in-phase input end and the negative terminal of biasing circuit 102 of comparator 2101, and described shorting switch 212 comprises the control end being coupled to described comparator 2101 output.
When described battery voltage short circuit control circuit 213 runs, comparator 2101 compares the voltage that its battery 211 both end voltage and biasing circuit 2102 provide.
When power depletion or the damage of battery 211, during the voltage levvl that its both end voltage is provided lower than biasing circuit 2102, comparator 2101, by shorting switch 212 conducting, with battery 211, thus minimizes the resistance of this battery path.
Preferably, described shorting switch is transistor.
Preferably, described shorting switch is mosfet transistor.Metal-Oxide Semiconductor field-effect transistor, being called for short metal-oxide half field effect transistor (Metal-Oxide-SemiconductorField-EffectTransistor, MOSFET) is a kind of field-effect transistor (field-effecttransistor) that can be widely used in analog circuit and digital circuit.MOSFET is different according to the polarity of its " passage " (work charge carrier), and can be divided into two types of " N-type " and " P type ", be usually also called NMOSFET and PMOSFET, other abbreviations still comprise NMOS, PMOS etc.
Mosfet transistor can work under the condition of very small area analysis and very low-voltage, and its manufacturing process can be integrated in a lot of field effect transistor on one piece of silicon chip easily, and therefore field effect transistor is widely used in large scale integrated circuit.
Preferably, described shorting switch is N-type mosfet transistor.
The battery pack of automatic switchover of the present invention, the battery that in short circuit battery pack, electricity exhausts or damages, extends the service time of battery pack.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (1)
1. the battery pack automatically switched, is characterized in that, comprising: n the battery be connected in series, and wherein n is natural number;
N the shorting switch be connected in parallel with respective battery, described shorting switch is mosfet transistor;
And with n short circuit control circuit of respective battery coupled in parallel, wherein said each short circuit control circuit receives respective battery both end voltage, and provides control signal according to respective battery both end voltage, in order to be turned on or off by corresponding shorting switch;
Described short circuit control circuit comprises: comparator, has in-phase input end, inverting input and output;
Biasing circuit, has anode and negative terminal, and its anode is coupled to the in-phase input end of comparator;
Wherein, described battery and shorting switch coupled in parallel are between the in-phase input end and the negative terminal of biasing circuit of comparator, and described shorting switch comprises the control end being coupled to described comparator output terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510901796.2A CN105429275A (en) | 2015-12-08 | 2015-12-08 | Automatically switched battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510901796.2A CN105429275A (en) | 2015-12-08 | 2015-12-08 | Automatically switched battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105429275A true CN105429275A (en) | 2016-03-23 |
Family
ID=55507285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510901796.2A Withdrawn CN105429275A (en) | 2015-12-08 | 2015-12-08 | Automatically switched battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105429275A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108988469A (en) * | 2017-05-31 | 2018-12-11 | 常州市派腾电子技术服务有限公司 | A kind of battery circuit, cell apparatus, electronic cigarette and method for controlling power supply |
| CN110071569A (en) * | 2018-01-22 | 2019-07-30 | 关隆股份有限公司 | Load control system and its control method |
-
2015
- 2015-12-08 CN CN201510901796.2A patent/CN105429275A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108988469A (en) * | 2017-05-31 | 2018-12-11 | 常州市派腾电子技术服务有限公司 | A kind of battery circuit, cell apparatus, electronic cigarette and method for controlling power supply |
| CN108988469B (en) * | 2017-05-31 | 2021-08-13 | 常州市派腾电子技术服务有限公司 | Battery circuit, battery device, electronic cigarette and power supply control method |
| CN110071569A (en) * | 2018-01-22 | 2019-07-30 | 关隆股份有限公司 | Load control system and its control method |
| CN110071569B (en) * | 2018-01-22 | 2023-10-13 | 关隆股份有限公司 | Load control system and control method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20160323 |
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| WW01 | Invention patent application withdrawn after publication |