CN201252397Y - Storage battery reverse connection protection circuit - Google Patents
Storage battery reverse connection protection circuit Download PDFInfo
- Publication number
- CN201252397Y CN201252397Y CNU2008201216963U CN200820121696U CN201252397Y CN 201252397 Y CN201252397 Y CN 201252397Y CN U2008201216963 U CNU2008201216963 U CN U2008201216963U CN 200820121696 U CN200820121696 U CN 200820121696U CN 201252397 Y CN201252397 Y CN 201252397Y
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- Prior art keywords
- storage battery
- circuit
- fuse
- reverse connection
- utility
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- Expired - Fee Related
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Abstract
The utility model relates to electric appliance equipment using a storage battery, in particular to a storage battery reverse connection protection circuit. One end of the storage battery is connected in series with a fuse; a branch circuit formed by the serial connection of the storage battery and the fuse is connected in parallel with a diode, and both ends of the branch circuit formed by the serial connection of the storage battery and the fuse are respectively connected in parallel with a charging management circuit and a protection circuit. The utility model mainly provides the storage battery reverse connection protection circuit which has simple circuit and little components, and can cut off the circuit at once under the condition of reverse connection of polarities of the storage battery, thereby the effect of protecting the circuit is achieved; and the utility model solves the technical problems existing in the prior art that no effective protection action exists in the reverse connection circuit, and true equipment protection is not achieved.
Description
Technical field
The utility model relates to a kind of electric equipment that uses storage battery, relates in particular to a kind of reverse connection of accumulator protective circuit.
Background technology
Solar power generation can be divided into grid-connected system and stand alone generating system.In the stand alone generating system energy storage device---storage battery must be arranged, storage battery discharges to power consumption equipment, keeps the work of power consumption equipment, after battery discharging, by solar panel storage battery is charged again.Frequently change in the circuit of storage battery at needs, often need regular dismounting storage battery, carry out care and maintenance work, in the refitting process after unloading,, can damage the electric equipment of high value or damage storage battery if accumulator polarity connects instead.And in the prior art, reverse-connection protection circuit often only is applied in the signal detection process, just has a signal to transmit after the reversal connection, but does not have certain protection action.
Summary of the invention
The utility model provides mainly that a kind of circuit is simple, and components and parts are few, connects under the anti-situation open circuit at once at accumulator polarity, thereby reaches the reverse connection of accumulator protective circuit of the effect of protective circuit; Solve not effectively protection action in the existing in prior technology reversal connection circuit, do not reach the technical problem of the protection of real equipment.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: a kind of reverse connection of accumulator protective circuit, and an end of storage battery is in series with fuse; Be parallel with diode on the branch road that storage battery and fuse are connected into, the two ends of the branch road that is linked to be at storage battery and fuse are parallel with charge management circuit and management of power use circuit respectively simultaneously.The position of storage battery and fuse is commutative.
Under normal operation, in the correct place in circuit of storage battery, charge management circuit provides electric current to charge a battery, simultaneously also provide electric current to power consumption equipment, diode anti-partially (being equivalent to open circuit), this moment storage battery be equivalent to a power consumption equipment, on the fuse by electric current less, in the rated current scope of fuse, fuse is kept operate as normal; When reverse connection of accumulator is gone in the circuit, battery positive voltage → fuse → diode cathode → diode cathode → battery terminal negative → battery positive voltage forms a closed-loop path.At this moment diode positively biased (being equivalent to short circuit), because resistance is very little, and current values can be very big, the fuse that fused has produced the protection action in the closed-loop path.In the moment that rigidly connects into storage battery, the reverse voltage that is added to the power circuit two ends is very little diode forward pressure drop; After the blown fuse, the reverse voltage that is added to the power circuit two ends is eliminated, and has protected storage battery or electric equipment.Component number of the present utility model is few, and commonplace, installs easily, and the effect of timely protective circuit can be well played in the action with protective circuit.
As preferably, described fuse is the blade inserting fuse, self-resistance and all less with the contact resistance of fuse holder, and power consumption and heating also just are suitable for low-voltage, high-current for a short time and use, self-resistance and all less with the contact resistance of fuse holder, power consumption and heating are also just little.
Therefore; a kind of reverse connection of accumulator protective circuit of the present utility model has following advantage: the reverse connecting protection loop that is made of diode, fuse; member is simple; cost is low; fast for the reaction speed behind the reverse connection of accumulator; the fuse that at once fuses has the protection action, can well play the effect of protective circuit.
Description of drawings:
Fig. 1 is the schematic diagram of the operate as normal of a kind of reverse connection of accumulator protective circuit of the present utility model;
Fig. 2 is the schematic diagram after the battery reversal connection of a kind of reverse connection of accumulator protective circuit of the present utility model.
Embodiment:
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment:
As shown in Figure 1, a kind of reverse connection of accumulator protective circuit comprises storage battery BT1; be in series with fuse F1 on the storage battery BT1; be parallel with diode D1, charge management circuit C1, protective circuit C2 and power consumption equipment E1 on the branch road that constitutes by storage battery BT1 and fuse F1 series connection.
When operate as normal, in the correct place in circuit of storage battery BT1, charge management circuit C1 provides electric current accumulators BT1 charging, simultaneously also provide electric current to power consumption equipment, diode D1 is anti-inclined to one side, and this moment, storage battery BT1 was equivalent to a power consumption equipment, and fuse F1 goes up by electric current less, less than the rated blowing-current of fuse F1, fuse F1 keeps operate as normal.When storage battery BT1 reversal connection is gone in the circuit, as Fig. 2, closed-loop path of the anodal formation of storage battery BT1 positive pole → fuse F1 → diode D1 positive pole → diode D1 negative pole → storage battery BT1 negative pole → storage battery BT1.At this moment diode D1 positively biased (being equivalent to short circuit), because resistance is very little, and current values can be very big, the fuse F1 that fused has produced the protection action in the closed-loop path.In the moment that rigidly connects into storage battery BT1, the reverse voltage that is added to the power circuit two ends is very little diode D1 forward voltage drop; After the fuse F1 fusing, the reverse voltage that is added to the power circuit two ends is eliminated, and has protected storage battery BT1 or electric equipment.Component number of the present utility model is few, and commonplace, installs easily, and the effect of timely protective circuit can be well played in the action with protective circuit.
In protective circuit C2, include overvoltage, cross put, current foldback circuit.These protective circuits all are basic circuits.
Specific embodiment described herein only is that design of the present utility model is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (2)
1. reverse connection of accumulator protective circuit, it is characterized in that: an end of storage battery is in series with fuse; On the branch road that storage battery and fuse are connected into, be parallel with diode, be parallel with charge management circuit and protective circuit respectively at the branch road two ends that storage battery and fuse are connected into simultaneously.
2. a kind of reverse connection of accumulator protective circuit according to claim 1 is characterized in that: described fuse is the blade inserting fuse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201216963U CN201252397Y (en) | 2008-07-22 | 2008-07-22 | Storage battery reverse connection protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201216963U CN201252397Y (en) | 2008-07-22 | 2008-07-22 | Storage battery reverse connection protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201252397Y true CN201252397Y (en) | 2009-06-03 |
Family
ID=40748060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201216963U Expired - Fee Related CN201252397Y (en) | 2008-07-22 | 2008-07-22 | Storage battery reverse connection protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201252397Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101888109A (en) * | 2010-07-20 | 2010-11-17 | 衡阳中微科技开发有限公司 | Storage battery charge control circuit adopting two-way reverse connecting protection |
| CN102810854A (en) * | 2011-05-31 | 2012-12-05 | 深圳市大族激光科技股份有限公司 | Protection circuit |
-
2008
- 2008-07-22 CN CNU2008201216963U patent/CN201252397Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101888109A (en) * | 2010-07-20 | 2010-11-17 | 衡阳中微科技开发有限公司 | Storage battery charge control circuit adopting two-way reverse connecting protection |
| CN101888109B (en) * | 2010-07-20 | 2012-12-05 | 衡阳中微科技开发有限公司 | Storage battery charge control circuit adopting two-way reverse connecting protection |
| CN102810854A (en) * | 2011-05-31 | 2012-12-05 | 深圳市大族激光科技股份有限公司 | Protection circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090603 Termination date: 20120722 |