CN209402225U - A kind of single-direction and dual-direction switching circuit - Google Patents
A kind of single-direction and dual-direction switching circuit Download PDFInfo
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- CN209402225U CN209402225U CN201920428113.XU CN201920428113U CN209402225U CN 209402225 U CN209402225 U CN 209402225U CN 201920428113 U CN201920428113 U CN 201920428113U CN 209402225 U CN209402225 U CN 209402225U
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Abstract
The utility model relates to electronic technology fields, in particular to a kind of single-direction and dual-direction switching circuit, including driving circuit, diode, lithium battery, generator and switching tube circuit, by the way that switching circuit is arranged, more than two transistors are connected in parallel with each other, the reaction time in the direction of control lithium battery loop current is able to ascend；By the control signal of driving circuit and peripheral hardware connect, can the loop current direction to lithium battery determine, and can make switching circuit work under double control mode.The single-direction and dual-direction switching circuit designed by this programme also has the overcurrent protection function of the circuit reverse current of lithium battery when external control signal is two-way signaling.
Description
Technical field
The utility model relates to electronic technology field, in particular to a kind of single-direction and dual-direction switching circuit.
Background technique
Lithium battery industry possesses vast market prospect, current global electronic information industry as a rising industry
In, mobile communication, laptop computer, digital camera have become three industries with fastest developing speed.Lithium battery have operating voltage it is high,
The advantages that specific energy is big, has extended cycle life, and self-discharge rate is low, memory-less effect, but there are lithiums in lithium battery dynamical system
Electric charge and discharge protecting problem because lithium battery is forbidden to charge, but can discharge under the conditions of crossing low temperature, therefore can have lithium electricity
Pond loop current direction controlling problem and power lithium cell electric stream problems of too.Early stage lithium electricity current control on-off is all made of relay
Device switching occurs spark in make and break process and is easy damage since relay contact on-off has the service life and contact resistance variation is big
It is bad and dangerous, it is a kind of reliable current switching mode using electronic switch (such as metal-oxide-semiconductor or IGBT), but electronic cutting
Pass must have reliable on-off to control and reliably current foldback circuit can safely work.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of single-direction and dual-direction switching circuits.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model are as follows:
A kind of single-direction and dual-direction switching circuit, including driving circuit, diode, lithium battery, generator and switching tube circuit, it is described
Switching tube circuit includes more than two transistors, and more than two transistors are connected in parallel with each other；
The anode of the lithium battery is connected in parallel with each other with the anode of the diode and more than two transistors respectively
Drain electrode electrical connection afterwards, the cathode of the lithium battery are electrically connected with the cathode of the generator, the cathode difference of the diode
Source electrode after being connected in parallel with each other with the positive and more than two transistor of the driving circuit, generator is electrically connected, described
Grid after more than two transistors are connected in parallel with each other is electrically connected with the driving circuit, the driving circuit and peripheral hardware
Control signal electrical connection.
The utility model has the beneficial effects that:
By the way that switching circuit is arranged, more than two transistors are connected in parallel with each other, control lithium electricity is able to ascend
The reaction time in the direction of pond loop current；The control signal of driving circuit and peripheral hardware is connected, it can be to the circuit of lithium battery
Current direction is determined, and can make switching circuit work under double control mode.The single-direction and dual-direction designed by this programme
Switching circuit also has the overcurrent protection function of the circuit reverse current of lithium battery when external control signal is two-way signaling
Energy；It is not only able to reliably switching electric current, and can be controlled in different current points and switches over, optimal control mode, such as:
DSP controls charging current switching under lithium electricity low-temperature condition, can control controllable electric at different temperatures after the rise of lithium electro-temperature
Current charge.
Detailed description of the invention
Fig. 1 is the circuit diagram according to a kind of single-direction and dual-direction switching circuit of the utility model；
Fig. 2 is the circuit diagram according to a kind of embodiment two of single-direction and dual-direction switching circuit of the utility model；
Fig. 3 is the integrated circuit figure according to a kind of single-direction and dual-direction switching circuit of the utility model；
Label declaration:
1, driving circuit；2, lithium battery；3, generator；4, switching tube circuit；5, tube voltage drop sample circuit；D1, diode.
Specific embodiment
For technology contents, the objects and the effects that the utility model is described in detail, below in conjunction with embodiment and match
Attached drawing is closed to be explained.
The design of the utility model most critical is: passing through driving circuit, diode, lithium battery, generator and switching tube
Cooperation between circuit solves the problems, such as lithium electricity charge and discharge protecting.
Fig. 1 to Fig. 3 is please referred to, technical solution provided by the utility model:
A kind of single-direction and dual-direction switching circuit, including driving circuit, diode, lithium battery, generator and switching tube circuit, it is described
Switching tube circuit includes more than two transistors, and more than two transistors are connected in parallel with each other；
The anode of the lithium battery is connected in parallel with each other with the anode of the diode and more than two transistors respectively
Drain electrode electrical connection afterwards, the cathode of the lithium battery are electrically connected with the cathode of the generator, the cathode difference of the diode
Source electrode after being connected in parallel with each other with the positive and more than two transistor of the driving circuit, generator is electrically connected, described
Grid after more than two transistors are connected in parallel with each other is electrically connected with the driving circuit, the driving circuit and peripheral hardware
Control signal electrical connection.
As can be seen from the above description, the utility model has the beneficial effects that:
By the way that switching circuit is arranged, more than two transistors are connected in parallel with each other, control lithium electricity is able to ascend
The reaction time in the direction of pond loop current；The control signal of driving circuit and peripheral hardware is connected, it can be to the circuit of lithium battery
Current direction is determined, and can make switching circuit work under double control mode.The single-direction and dual-direction designed by this programme
Switching circuit also has the overcurrent protection function of the circuit reverse current of lithium battery when external control signal is two-way signaling
Energy；It is not only able to reliably switching electric current, and can be controlled in different current points and switches over, optimal control mode, such as:
DSP controls charging current switching under lithium electricity low-temperature condition, can control controllable electric at different temperatures after the rise of lithium electro-temperature
Current charge.
It further, further include tube voltage drop sample circuit, the tube voltage drop sample circuit sun with the diode respectively
Pole, the cathode of diode and driving circuit electrical connection.
Seen from the above description, circuit is simple, at low cost, fast response time for tube voltage drop sampling protection, and loudness can reach
To 100ns rank.
Further, the control signal is one way signal or two-way signaling.
Seen from the above description, control signal be one way signal when, i.e., electric current can only positive direction flowing, be unable to reverse flow
Dynamic, the loop current of lithium battery, to forward flow, can be used to prevent out in 0 to forward flow or negative sense by setting delay time
Pipe circuit is closed to vibrate；When controlling signal is two-way signaling, switching tube circuit is in opening state always, and lithium battery returns
Road electric current being capable of positive or reverse flow.
Further, the quantity of the transistor is 2-6.
Further, the transistor is that metal-oxide-semiconductor or IGBT are managed.
Seen from the above description, metal-oxide-semiconductor is used in low pressure range at present, such as: 100V internal resistance can accomplish 1 milliohm etc.
Grade, by 100A electric current ability 10W, the electronic switch of low power consumption high efficiency is may be implemented in multiple MOS parallel connections.IGBT is used for high pressure
(300V-1000V) principle is similar with MOS, at present technique collector voltage VCEIt can also accomplish 1.5V or so, all be efficient electricity
Sub switch (working frequency > 5KHz).
Please refer to Fig. 1 and Fig. 3, the embodiments of the present invention one are as follows:
A kind of single-direction and dual-direction switching circuit, including driving circuit 1, diode D1, lithium battery 2, generator 3 and switching tube circuit
4, the switching tube circuit 4 includes more than two transistors, and more than two transistors are connected in parallel with each other；
The lithium battery 2 anode respectively with the anode of the diode D1 and more than two transistors company parallel with one another
Drain electrode electrical connection after connecing, the cathode of the lithium battery 2 are electrically connected with the cathode of the generator 3, the cathode of the diode
Source electrode after being connected in parallel with each other respectively with the positive and more than two transistor of the driving circuit 1, generator 3 is electrically connected
It connects, the grid after described two above transistors are connected in parallel with each other is electrically connected with the driving circuit 1, the driving circuit
1 is electrically connected with the control signal of peripheral hardware.
The driving circuit 1 includes the first triode, the second triode and integrated chip, the transmitting of first triode
Pole is electrically connected with the emitter of second triode, the integrated chip respectively with the collector of first triode and
The collector of one triode is electrically connected.
Referring to figure 2. and Fig. 3, the embodiments of the present invention two are as follows:
Embodiment two and the difference of embodiment one are: it further include tube voltage drop sample circuit 5, the tube voltage drop sample circuit
5 are electrically connected with the anode of the diode, the cathode of diode and driving circuit 1 respectively.
The control signal is one way signal or two-way signaling.
The quantity of the transistor is 2-6, preferably 4.
The transistor is that metal-oxide-semiconductor or IGBT are managed.
The tube voltage drop sample circuit 5 includes amplifier comparator and electronic switch, the amplifier comparator and the electronics
Switch electrical connection.
In conclusion a kind of single-direction and dual-direction switching circuit provided by the utility model, by the way that switching circuit is arranged, by two with
On the transistor be connected in parallel with each other, be able to ascend control lithium battery loop current direction reaction time；It will driving
The control signal of circuit and peripheral hardware connection, can the loop current direction to lithium battery determine, and can make switch electricity
Road works under double control mode.The single-direction and dual-direction switching circuit designed by this programme is two-way signaling in external control signal
When, also there is the overcurrent protection function of the circuit reverse current of lithium battery；It is not only able to reliably switching electric current, and can control
It is switched in different current points, optimal control mode, such as: DSP controls charging current switching under lithium electricity low-temperature condition, when
Lithium electro-temperature can control controllable current charging at different temperatures after ging up.
The above description is only the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all
Equivalents made based on the specification and figures of the utility model are applied directly or indirectly in relevant technology neck
Domain is also included in the patent protection scope of the utility model.
Claims (5)
1. a kind of single-direction and dual-direction switching circuit, which is characterized in that including driving circuit, diode, lithium battery, generator and switching tube
Circuit, the switching tube circuit include more than two transistors, and more than two transistors are connected in parallel with each other；
After the anode of the lithium battery is connected in parallel with each other with the anode of the diode and more than two transistors respectively
Drain electrode electrical connection, the cathode of the lithium battery is electrically connected with the cathode of the generator, the cathode of the diode respectively with institute
State driving circuit, the source electrode electrical connection after the positive and more than two transistor of generator is connected in parallel with each other, it is described two
Grid after above transistor is connected in parallel with each other is electrically connected with the driving circuit, the control of the driving circuit and peripheral hardware
Signal electrical connection.
2. single-direction and dual-direction switching circuit according to claim 1, which is characterized in that it further include tube voltage drop sample circuit, it is described
Tube voltage drop sample circuit is electrically connected with the anode of the diode, the cathode of diode and driving circuit respectively.
3. single-direction and dual-direction switching circuit according to claim 1, which is characterized in that the control signal is one way signal or double
To signal.
4. single-direction and dual-direction switching circuit according to claim 1, which is characterized in that the quantity of the transistor is 2-6.
5. single-direction and dual-direction switching circuit according to claim 1, which is characterized in that the transistor is that metal-oxide-semiconductor or IGBT are managed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920428113.XU CN209402225U (en) | 2019-04-01 | 2019-04-01 | A kind of single-direction and dual-direction switching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920428113.XU CN209402225U (en) | 2019-04-01 | 2019-04-01 | A kind of single-direction and dual-direction switching circuit |
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| Publication Number | Publication Date |
|---|---|
| CN209402225U true CN209402225U (en) | 2019-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920428113.XU Active CN209402225U (en) | 2019-04-01 | 2019-04-01 | A kind of single-direction and dual-direction switching circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109950961A (en) * | 2019-04-01 | 2019-06-28 | 福州欣联达电子科技有限公司 | A kind of single-direction and dual-direction switching circuit and its control method |
-
2019
- 2019-04-01 CN CN201920428113.XU patent/CN209402225U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109950961A (en) * | 2019-04-01 | 2019-06-28 | 福州欣联达电子科技有限公司 | A kind of single-direction and dual-direction switching circuit and its control method |
| CN109950961B (en) * | 2019-04-01 | 2023-11-24 | 福州欣联达电子科技有限公司 | Single-direction and double-direction switch circuit and control method thereof |
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