CN204761016U - New energy automobile power battery's protection circuit - Google Patents
New energy automobile power battery's protection circuit Download PDFInfo
- Publication number
- CN204761016U CN204761016U CN201520457478.7U CN201520457478U CN204761016U CN 204761016 U CN204761016 U CN 204761016U CN 201520457478 U CN201520457478 U CN 201520457478U CN 204761016 U CN204761016 U CN 204761016U
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- China
- Prior art keywords
- power battery
- electrokinetic cell
- voltage
- control circuit
- voltage detecting
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- Expired - Fee Related
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model provides a new energy automobile power battery's protection circuit, relate to battery protection technical field, its structure includes first switching element, prevent anti - diode and voltage detecting and the control circuit of filling, voltage detecting and control circuit's measuring termination in power battery's both ends, voltage detecting and control circuit's control termination in the controlled end of first switching element, the both ends of first switching element connect in power battery's both ends, return circuit between first switching element and the power battery has connect prevents the anti - diode that fills, reference voltage that the voltage at power battery both ends is greater than voltage detecting and control circuit then voltage detecting and the first switching element of control circuit control switches on, the voltage in outside electric energy source is greater than the voltage at power battery both ends and then prevents the anti - diode current flow that fills, the voltage in outside electric energy source is less than the voltage at power battery both ends and prevents then that the anti - diode that fills ends.
Description
Technical field
The utility model relates to battery protection technical field, particularly relates to a kind of protective circuit of new-energy automobile power battery.
Background technology
New-energy automobile comprises pure electric automobile, stroke-increasing electric automobile, hybrid vehicle, fuel cell electric vehicle, hydrogen engine automobile and other new-energy automobiles etc., wherein, pure electric automobile, stroke-increasing electric automobile and fuel cell electric vehicle all need to use the battery for providing power.
At present, material, formula, production equipment and technology etc. four, China's lithium-ion-power cell determines that the critical aspects of performance still has greatly improved space.It is reported, now a lot of batteries lacks protective circuit, make battery in use occur overcharging or crossing the problem of putting, thus the life-span affecting battery even brings potential safety hazard.
Summary of the invention
The protective circuit that the purpose of this utility model is to avoid weak point of the prior art and provides a kind of new-energy automobile power battery, to realize improving useful life and the minimizing potential safety hazard of battery after the protective circuit of this kind of new-energy automobile power battery can write software for software engineer in voltage detecting and control circuit.
The purpose of this utility model is achieved through the following technical solutions:
A kind of protective circuit of new-energy automobile power battery is provided, electrokinetic cell is charged by external electric energy source, and be load supplying, it is characterized in that: comprise the first switching device, for preventing the electrokinetic cell externally anti-reverse charging diode of electric energy charging and voltage detecting and control circuit, the test side of described voltage detecting and control circuit is connected to the two ends of described electrokinetic cell, the control end of described voltage detecting and control circuit is connected to the controlled end of described first switching device, two ends of described first switching device are connected to the two ends of described electrokinetic cell, loop between described first switching device and described electrokinetic cell is connected to described anti-reverse charging diode, the voltage at electrokinetic cell two ends is greater than the reference voltage of voltage detecting and control circuit, and then voltage detecting and control circuit control the first switch device conductive, the reference voltage that the voltage at electrokinetic cell two ends is less than voltage detecting and control circuit then voltage detecting and control circuit controls the first switching device and disconnects, the voltage in external electric energy source is greater than the voltage then anti-reverse charging diode current flow at electrokinetic cell two ends, the voltage in external electric energy source is less than the voltage then anti-reverse charging diode cut-off at electrokinetic cell two ends.
The protective circuit of new-energy automobile power battery also comprises second switch device, and described second switch device is connected in the loop between electrokinetic cell and load, and described second switch device is controlled by described voltage detecting and control circuit.
The protective circuit of new-energy automobile power battery also comprises anti-reverse diode and fuse; a loop is connected to become with described electrokinetic cell after described anti-reverse diode and described fuse serial connection; electrokinetic cell reversal connection is described anti-reverse diode current flow then, blowout.
Described external electric energy source is solar panel.
Described first switching device is the circuit comprising triode.
Described second switch device is the circuit comprising triode.
The beneficial effects of the utility model: the protective circuit of a kind of new-energy automobile power battery of the present utility model, after reference voltage can being set for software engineer in voltage detecting and control circuit, detect by using voltage detecting and the voltage of control circuit to electrokinetic cell, when the voltage at electrokinetic cell two ends is greater than the reference voltage of voltage detecting and control circuit, then voltage detecting and control circuit control the first switch device conductive, anti-reverse charging diode cut-off simultaneously, then the electric energy in external electric energy source is directly released by this bypass of the first switching device, no longer electrokinetic cell is charged, thus ensure that electrokinetic cell can not overcharge, electrokinetic cell is played to the effect of additives for overcharge protection, the reference voltage being less than voltage detecting and control circuit when the voltage at electrokinetic cell two ends then voltage detecting and control circuit controls the first switching device and disconnects, continue power battery charging, when the voltage in external electric energy source is greater than the voltage of electrokinetic cell, anti-reverse charging diode current flow, otherwise cut-off, thus ensure night or overcast and rainy time there will not be electrokinetic cell externally electric energy reverse charging, play the effect of anti-reverse charging electric protection.
Accompanying drawing explanation
Accompanying drawing is utilized to be described further utility model, but the embodiment in accompanying drawing does not form any restriction of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the following drawings.
Fig. 1 is the circuit diagram of the protective circuit of a kind of new-energy automobile power battery of the present utility model.
Fig. 2 is the circuit diagram of the protective circuit of a kind of new-energy automobile power battery of the present embodiment.
Embodiment
With the following Examples the utility model is further described.
The protective circuit of a kind of new-energy automobile power battery of the present embodiment, as shown in Figure 1, electrokinetic cell is charged by external electric energy source, and be load supplying, comprise the first switching device, for preventing the electrokinetic cell externally anti-reverse charging diode of electric energy charging and voltage detecting and control circuit, the test side of described voltage detecting and control circuit is connected to the two ends of described electrokinetic cell, the control end of described voltage detecting and control circuit is connected to the controlled end of described first switching device, two ends of described first switching device are connected to the two ends of described electrokinetic cell, loop between described first switching device and described electrokinetic cell is connected to described anti-reverse charging diode, the voltage at electrokinetic cell two ends is greater than the reference voltage of voltage detecting and control circuit, and then voltage detecting and control circuit control the first switch device conductive, the reference voltage that the voltage at electrokinetic cell two ends is less than voltage detecting and control circuit then voltage detecting and control circuit controls the first switching device and disconnects, the voltage in external electric energy source is greater than the voltage then anti-reverse charging diode current flow at electrokinetic cell two ends, the voltage in external electric energy source is less than the voltage then anti-reverse charging diode cut-off at electrokinetic cell two ends.
The protective circuit of a kind of new-energy automobile power battery of the present embodiment, after reference voltage can being set for software engineer in voltage detecting and control circuit, detect by using voltage detecting and the voltage of control circuit to electrokinetic cell, when the voltage at electrokinetic cell two ends is greater than the reference voltage of voltage detecting and control circuit, then voltage detecting and control circuit control the first switch device conductive, anti-reverse charging diode cut-off simultaneously, then the electric energy in external electric energy source is directly released by this bypass of the first switching device, no longer electrokinetic cell is charged, thus ensure that electrokinetic cell can not overcharge, electrokinetic cell is played to the effect of additives for overcharge protection, the reference voltage being less than voltage detecting and control circuit when the voltage at electrokinetic cell two ends then voltage detecting and control circuit controls the first switching device and disconnects, continue power battery charging, when the voltage in external electric energy source is greater than the voltage of electrokinetic cell, anti-reverse charging diode current flow, otherwise cut-off, thus ensure night or overcast and rainy time there will not be electrokinetic cell externally electric energy reverse charging, play the effect of anti-reverse charging electric protection.
The present embodiment also comprises second switch device, described second switch device is connected in the loop between electrokinetic cell and load, described second switch device is controlled by described voltage detecting and control circuit, second switch device is electrokinetic cell discharge switch, when voltage detecting and control circuit detect that load current is greater than rated current appearance overload or load short circuits, control second switch device to turn off, play the effect of output overloading protection and the effect of output short circuit protection, simultaneously, when voltage detecting and control circuit detect that the voltage of electrokinetic cell is less than overdischarge pressure, also control second switch device to turn off, carry out over.
The protective circuit of new-energy automobile power battery also comprises anti-reverse diode and fuse; a loop is connected to become with described electrokinetic cell after described anti-reverse diode and described fuse serial connection; electrokinetic cell reversal connection is described anti-reverse diode current flow then; blowout; when the reverse polarity connection of electrokinetic cell; anti-reverse diode current flow; electrokinetic cell is discharged by anti-reverse shorted diode; producing very big current makes fuse F blow fast, plays the effect of anti-electrokinetic cell reverse connecting protection.
To sum up, the protective circuit of the new-energy automobile power battery of the present embodiment can realize the over-charge protective of electrokinetic cell, also can realize the Cross prevention of electrokinetic cell, also can realize the anti-reverse protection of electrokinetic cell.
Wherein, as shown in Figure 2, described external electric energy source is solar panel, certainly, also can be the external electric energy source of other type.
Described first switching device is the circuit comprising triode.
Described second switch device is the circuit comprising triode, and triode is simple and easy to realize, and cost is low.
Finally should be noted that; above embodiment is only in order to illustrate the technical solution of the utility model; but not the restriction to the utility model protection range; although done to explain to the utility model with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify to the technical solution of the utility model or equivalent replacement, and not depart from essence and the scope of technical solutions of the utility model.
Claims (6)
1. the protective circuit of a new-energy automobile power battery, electrokinetic cell is charged by external electric energy source, and be load supplying, it is characterized in that: comprise the first switching device, for preventing the electrokinetic cell externally anti-reverse charging diode of electric energy charging and voltage detecting and control circuit, the test side of described voltage detecting and control circuit is connected to the two ends of described electrokinetic cell, the control end of described voltage detecting and control circuit is connected to the controlled end of described first switching device, two ends of described first switching device are connected to the two ends of described electrokinetic cell, loop between described first switching device and described electrokinetic cell is connected to described anti-reverse charging diode.
2. the protective circuit of a kind of new-energy automobile power battery as claimed in claim 1; it is characterized in that: also comprise second switch device; described second switch device is connected in the loop between electrokinetic cell and load, and described second switch device is controlled by described voltage detecting and control circuit.
3. the protective circuit of a kind of new-energy automobile power battery as claimed in claim 1 or 2; it is characterized in that: the protective circuit of new-energy automobile power battery also comprises anti-reverse diode and fuse; a loop is connected to become with described electrokinetic cell after described anti-reverse diode and described fuse serial connection; electrokinetic cell reversal connection is described anti-reverse diode current flow then, blowout.
4. the protective circuit of a kind of new-energy automobile power battery as claimed in claim 1, is characterized in that: described external electric energy source is solar panel.
5. the protective circuit of a kind of new-energy automobile power battery as claimed in claim 1, is characterized in that: described first switching device is the circuit comprising triode.
6. the protective circuit of a kind of new-energy automobile power battery as claimed in claim 2, is characterized in that: described second switch device is the circuit comprising triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520457478.7U CN204761016U (en) | 2015-06-30 | 2015-06-30 | New energy automobile power battery's protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520457478.7U CN204761016U (en) | 2015-06-30 | 2015-06-30 | New energy automobile power battery's protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204761016U true CN204761016U (en) | 2015-11-11 |
Family
ID=54475692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520457478.7U Expired - Fee Related CN204761016U (en) | 2015-06-30 | 2015-06-30 | New energy automobile power battery's protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204761016U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106841745A (en) * | 2016-12-27 | 2017-06-13 | 四川超影科技有限公司 | A kind of robot electric power system voltage x current observation circuit |
-
2015
- 2015-06-30 CN CN201520457478.7U patent/CN204761016U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106841745A (en) * | 2016-12-27 | 2017-06-13 | 四川超影科技有限公司 | A kind of robot electric power system voltage x current observation circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151111 Termination date: 20160630 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |