CN207588524U - A kind of power supply circuit - Google Patents
A kind of power supply circuit Download PDFInfo
- Publication number
- CN207588524U CN207588524U CN201721838877.3U CN201721838877U CN207588524U CN 207588524 U CN207588524 U CN 207588524U CN 201721838877 U CN201721838877 U CN 201721838877U CN 207588524 U CN207588524 U CN 207588524U
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- China
- Prior art keywords
- circuit
- charging
- load
- power
- unit
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- 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.)
- Expired - Fee Related
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Abstract
The utility model provides a kind of power supply circuit, including the current detection module and power switch being sequentially connected；A part for charging and discharging circuit is further included, and another part of charging and discharging circuit is arranged on load unit；The charging and discharging circuit includes charge circuit and the first discharge loop, and when two parts of charging and discharging circuit are connected, the charge circuit includes charging circuit and coupled accumulator；First discharge loop includes discharge circuit, is connected in parallel with the accumulator, and be connected in series with the charging circuit；When load unit accesses power-supply unit, load circuit accesses the current output terminal of power switch, charging and discharging circuit accesses the current input terminal of power switch, i.e. power switch is located in the current supply circuit of load circuit, but not in the current supply circuit of charging and discharging circuit.It can realize the detection being switched in or out to load unit and and be easy to implement detection to different model load unit.
Description
Technical field
The utility model is related to a kind of power supply circuits, are related to electronic circuit field.
Background technology
Prior art includes power-supply unit and load unit, and load unit can be with grafting or cable connection in electricity
On the supply unit of source, power-supply unit is powered to load unit, load circuit works, realizes corresponding function.
Power-supply unit built-in controller, current detection circuit and power switch, the electric current supplied by power circuit are suitable
Sequence is by current detection circuit, power switch, out-put supply supply unit, by relevant connection device such as connector, cable etc.,
It powers to load unit.In the case of load unit access power-supply unit and by normal power supply, pass through current detecting electricity
Road, controller can read the size of current that power supply is supplied to load unit, referred to as load current.
When the load current detected is more than the electric current Secure Threshold of controller setting, such as instantaneous short-circuit high current,
The controller of power-supply unit can turn off power switch, cut off the current supply circuit to load unit, protect load unit and
Power-supply unit is without damage.
It is single in not connected load since power-supply unit does not have load detection circuit for access for load unit
When first, if first, the power switch of power-supply unit, which is in, is closed conducting state, supplying power for outside port, which is in, electric shape
State, after grafting load unit, load unit obtains power supply supply from supply port；If the second, power supply of power-supply unit
Switch is off, and after grafting load unit, controller needs reception external command to carry out closure conducting to power switch,
Then load unit still obtains power supply supply from supply port.
Power-supply unit may be needed to the load unit power supply of different model, and different model load unit has difference
Secure Threshold load current, power-supply unit can not detect access load unit model, be also unable to find out correspondence connect
Enter the accurate Secure Threshold load current of load unit, transfiniting to load unit load current, there are security risks for protection.
When controller detects that load unit failure causes load current to transfinite, cut-out power switch is single to load
After the electric current supply of member is cut off, controller can not learn whether the load fault unit is moved by current detection circuit
It removes or replaces, in the case of no manual intervention, controller can only be closed conducting power switch by being interrupted, and detect load current
Whether restore normal, to know the situation of load end.This interruption is closed the behavior for being connected and restoring electricity to power-supply unit
New security risk is brought with load unit.
When load unit work is not needed to, to save power consumption, controller is disconnected to the power switch of load unit,
Load current detection is zero, and during which controller can not perceive whether load unit is removed and replaced.
When load unit accesses power-supply unit for the first time, if the supply port of power-supply unit is in and has in grafting
Electricity condition, the circuit devcie that may be brought with electrical plug operation on load unit exceed the upper surge of permissible range, may
Lead to load unit device because power surges are damaged.
The supply port of power-supply unit, which is in, electricity condition, at this time such as access wrong load or because maloperation causes to supply
Electric port short circuit, electric leakage, may lead to unnecessary harm.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of power supply circuits, can match with load unit
It closes, realizes the detection being switched in or out to load unit.
The technical solution adopted in the utility model is as follows：
A kind of power supply circuit, it is characterised in that：Including the current detection module and power switch being sequentially connected；Also wrap
A part for charging and discharging circuit is included, and another part of charging and discharging circuit is arranged on load unit；The charging and discharging circuit includes
Charge circuit and the first discharge loop, when charging and discharging circuit two parts connect when, the charge circuit include charging circuit and
Coupled accumulator, the input terminal of charging circuit are the input terminal of charging and discharging circuit, and the output terminal of charging circuit connects
Accumulator, first discharge loop include discharge circuit, are connected in parallel with the accumulator, the discharge circuit input
End is connect, and the second discharge loop of energy storage that discharge circuit and accumulator are formed is in electricity with the output terminal of the charging circuit
It is completely set in source supply unit or load unit；When load unit accesses power-supply unit, load circuit access power supply
The current output terminal of switch, charging and discharging circuit access the current input terminal of power switch, i.e. power switch is located at load circuit
In current supply circuit, but not in the current supply circuit of charging and discharging circuit；Power-supply unit side and load unit side are respectively arranged with
Corresponding connecting interface, when the load unit where load circuit accesses power-supply unit, corresponding connecting interface
It connects, and charging and discharging circuit conducting has conducting electric current；When the load unit where load circuit breaks with power-supply unit
When opening connection, corresponding connecting interface disconnects, and the charging and discharging circuit has been no longer turned on the conducting electric current.
The charging circuit is set to load unit, and discharge circuit and accumulator are set to power-supply unit.
The charging circuit is set to power-supply unit, and discharge circuit and accumulator are set to load unit.
The charging circuit, discharge circuit and accumulator may be contained within load unit.
The accumulator is the accumulator of limited energy storage.
The charging circuit includes charging resistor；Discharge circuit includes discharge resistance；Accumulator includes storage capacitor.
Compared with prior art, the beneficial effects of the utility model are：When load unit accesses power-supply unit, nothing
By the load circuit in load unit whether on conduct, the charging and discharging circuit is accessed and is led and alives simultaneously；When negative
When carrier unit is disconnected with power-supply unit, the charging and discharging circuit, which simultaneously switches off, to be no longer turned on.Therefore, the utility model is above-mentioned
The feature that has of circuit structure, can realize the detection being switched in or out to load unit.By detecting the charge and discharge
The state that is turned on or off of electrical circuit（Such as, if there is conducting electric current）, can realize that load unit is switched in or out state
Detection.Meanwhile by designing different charging circuits, discharge circuit and accumulator, different charging currents can be set,
And the curent change curve in charging process, and it is associated with different model load unit, it can realize to different model
The detection of load unit.
Description of the drawings
Fig. 1 is the structure diagram of the utility model wherein Application Example.
Fig. 2 is the structure diagram of the utility model wherein Application Example.
Fig. 3 is the structure diagram of the utility model wherein Application Example.
Fig. 4 is the structure diagram of the utility model wherein Application Example.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention is further described in detail.It should be appreciated that specific embodiment described herein is only explaining this
Utility model is not used to limit the utility model.
This specification（Including any abstract and attached drawing）Disclosed in any feature, unless specifically stated, can be by other
Equivalent or with similar purpose alternative features are replaced.That is, unless specifically stated, each feature is a series of equivalent
An or example in similar characteristics.
Specific embodiment 1
As shown in Figure 1, a kind of power supply circuit, including the current detection module and power switch being sequentially connected；Also wrap
A part for charging and discharging circuit is included, and another part of charging and discharging circuit is arranged on load unit；The charging and discharging circuit includes
Charge circuit and the first discharge loop, when charging and discharging circuit two parts connect when, the charge circuit include charging circuit and
Coupled accumulator, the input terminal of charging circuit are the input terminal of charging and discharging circuit, and the output terminal of charging circuit connects
Accumulator, first discharge loop include discharge circuit, are connected in parallel with the accumulator, the discharge circuit input
End is connect, and the second discharge loop of energy storage that discharge circuit and accumulator are formed is in electricity with the output terminal of the charging circuit
It is completely set in source supply unit or load unit；When load unit accesses（Such as grafting or other mechanical access ways）Power supply
During supply unit, load circuit accesses the current output terminal of power switch, the electric current input of charging and discharging circuit access power switch
End, i.e., power switch is located in the current supply circuit of load circuit, but not in the current supply circuit of charging and discharging circuit；Power supply supply is single
First side and load unit side are respectively arranged with corresponding connecting interface, when the load unit access power supply supply where load circuit
During unit, corresponding connecting interface is connected, and charging and discharging circuit conducting has conducting electric current；Where load circuit
Load unit is disconnected with power-supply unit（Dial-out or other mechanical disconnection modes）During connection, corresponding connecting interface is broken
It opens, and the charging and discharging circuit has been no longer turned on the conducting electric current
When load unit accesses power-supply unit, no matter the load circuit in load unit whether on conduct, institute
It states charging and discharging circuit while accesses and lead and alive；When load unit and power-supply unit disconnect, the charge and discharge
Circuit, which simultaneously switches off, to be no longer turned on.Therefore, the feature that the above-mentioned circuit structure of the utility model has can be realized to load
The detection being switched in or out of unit.By the state that is turned on or off for detecting the charging and discharging circuit（Such as, if there is conducting
Electric current）, can realize that load unit is switched in or out the detection of state.
When load unit accesses power-supply unit, if power switch is off-state, in this no charging and discharging circuit
In the case of, then it can not realize that detection is realized in the access to load unit, and in the case where there is this charge circuit, even if with negative
The power switch for carrying circuit series connection is off-state, since power switch is not in charge circuit, when load unit accesses,
Charging and discharging circuit remains able to power on, and therefore, power-supply unit is able to detect that the output current to load unit,
Realize that the access to load unit detects.
In addition, in the prior art, if after closing power switch to the load unit in work, power-supply unit without
Method detects whether load unit really disconnects during this period（Dial-out or other mechanical disconnection modes）, in the charge and discharge of this programme
On the basis of circuit, then whether can be whether conducting state realization really disconnects load unit according in charging and discharging circuit
Detection.
Meanwhile by designing different charging circuits, discharge circuit and accumulator, it is big that different charging currents can be set
Curent change curve small and in charging process, and it is associated with different model load unit, it can realize to different shaped
The detection of number load unit.
Specific embodiment 2
On the basis of specific embodiment 1, as shown in Figure 1, in this embodiment, the charging circuit is set to negative
Carrier unit, discharge circuit and accumulator are set to power-supply unit.
Specific embodiment 3
On the basis of specific embodiment 1, as shown in Fig. 2, in this embodiment, the charging circuit is set to electricity
Source supply unit, discharge circuit and accumulator are set to load unit.
Specific embodiment 4
On the basis of specific embodiment 1, as shown in figure 3, in this embodiment, the charging circuit, electric discharge electricity
Road and accumulator may be contained within load unit.
The structure setting form of charging and discharging currents is not limited to three kinds of structure settings of above-mentioned specific embodiment 2 to 4,
Can be other structures setting, as long as meeting following conditions：When the load unit access where load circuit（Such as grafting
Or other mechanical access ways）During power-supply unit, corresponding connecting interface is connected, and the charging and discharging circuit is connected
There is conducting electric current；It is corresponding to connect when the load unit where load circuit and power-supply unit disconnect
Mouth disconnects, and the charging and discharging circuit has been no longer turned on the conducting electric current, such as the charging circuit, discharge circuit and energy storage
Circuit may be contained within power-supply unit, but only when the load unit where load circuit accesses power-supply unit, institute
It states corresponding connecting interface to connect, and charging and discharging circuit conducting has conducting electric current.
Specific embodiment 5
On the basis of one of specific embodiment 1 to 4, in this embodiment, the accumulator is limited energy storage
Accumulator.
Specific embodiment 6
On the basis of one of specific embodiment 1 to 5, as shown in figure 4, in this embodiment, the charging circuit
Including charging resistor；Discharge circuit includes discharge resistance；Accumulator includes storage capacitor.
Claims (6)
1. a kind of power supply circuit, it is characterised in that：Including the current detection module and power switch being sequentially connected；It further includes
A part for charging and discharging circuit, and another part of charging and discharging circuit is arranged on load unit；The charging and discharging circuit includes filling
Electrical circuit and the first discharge loop, when charging and discharging circuit two parts connect when, the charge circuit include charging circuit and with
Its connected accumulator, the input terminal of charging circuit are the input terminal of charging and discharging circuit, and the output terminal connection of charging circuit is stored up
Energy circuit, first discharge loop include discharge circuit, are connected in parallel with the accumulator, the discharge circuit input terminal
It is connect with the output terminal of the charging circuit, and the second discharge loop of energy storage that discharge circuit and accumulator are formed is in power supply
It is completely set in supply unit or load unit；When load unit accesses power-supply unit, load circuit access is for establishing by cable
The current output terminal of pass, charging and discharging circuit access the current input terminal of power switch, i.e. power switch is located at the confession of load circuit
In electrical circuit, but not in the current supply circuit of charging and discharging circuit；Power-supply unit side and load unit side are respectively arranged with phase
The connecting interface answered, when the load unit where load circuit accesses power-supply unit, corresponding connecting interface connects
It is logical, and charging and discharging circuit conducting has conducting electric current；When the load unit where load circuit and power-supply unit disconnect
During connection, corresponding connecting interface disconnects, and the charging and discharging circuit has been no longer turned on the conducting electric current.
2. power supply circuit according to claim 1, it is characterised in that：The charging circuit is set to load unit,
Discharge circuit and accumulator are set to power-supply unit.
3. power supply circuit according to claim 1, it is characterised in that：It is single that the charging circuit is set to power supply supply
Member, discharge circuit and accumulator are set to load unit.
4. power supply circuit according to claim 1, it is characterised in that：The charging circuit, discharge circuit and energy storage
Circuit may be contained within load unit.
5. the power supply circuit according to one of claim 1 to 4, it is characterised in that：The accumulator is limited storage
The accumulator of energy.
6. power supply circuit according to claim 5, it is characterised in that：The charging circuit includes charging resistor；It puts
Circuit includes discharge resistance；Accumulator includes storage capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721838877.3U CN207588524U (en) | 2017-12-26 | 2017-12-26 | A kind of power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721838877.3U CN207588524U (en) | 2017-12-26 | 2017-12-26 | A kind of power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207588524U true CN207588524U (en) | 2018-07-06 |
Family
ID=62739804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721838877.3U Expired - Fee Related CN207588524U (en) | 2017-12-26 | 2017-12-26 | A kind of power supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207588524U (en) |
-
2017
- 2017-12-26 CN CN201721838877.3U patent/CN207588524U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180706 Termination date: 20201226 |