Invention content
In view of this, the purpose of the present invention is to provide one kind to prevent flash driving power reverse-connection protection circuit and vehicle control
Device processed can not only protect circuit reversal connection, but also can reduce the purpose of circuit cost to reach.Its concrete scheme is as follows:
One kind prevents flash driving power reverse-connection protection circuit, including:
Control circuit, power supply, relay, diode, the first power MOS pipe and load circuit;
The control circuit is connect respectively with the first power MOS pipe grid and the load circuit, first work(
The drain electrode of rate metal-oxide-semiconductor is connect with the diode cathode, and the diode cathode is connect with the relay input terminal, the relay
Device normal-closed end is connect with described power supply one end, and the power supply other end is connect, and be grounded with the load circuit, the load electricity
Road is connect with the relay normally open end;
Wherein, connection TVS protection circuits, first power MOS pipe between the first power MOS pipe drain electrode and source electrode
Substrate ground;The load circuit controls the operation of N number of load, and the load circuit includes protecting circuit, N >=2.
Preferably, the load circuit includes the power MOS pipe group of N number of parallel connection;
Wherein, each power MOS pipe group includes the second power MOS pipe and load, N >=2;Second power MOS pipe
Connection TVS protection circuits between drain electrode and source electrode, and the connection load of each second power MOS pipe substrate, and be grounded.
Preferably, the power supply is lead-acid battery.
Preferably, first power MOS pipe and second power MOS pipe are the enhanced metal-oxide-semiconductor of N-channel.
Preferably, the TVS protections circuit includes the first transient diode and the second transient diode.
Correspondingly, the invention also discloses a kind of entire car controller, disclosed prevent flash driving power anti-including aforementioned
Connect protection circuit.
Correspondingly, the invention also discloses a kind of new-energy automobile, including aforementioned disclosed entire car controller.
In the present invention, one kind prevents flash driving power reverse-connection protection circuit, including:Control circuit, power supply, relay
Device, diode, the first power MOS pipe and load circuit;Control circuit connects respectively with the first power MOS pipe grid and load circuit
It connects, the drain electrode of the first power MOS pipe is connect with diode cathode, and diode cathode is connect with relay input terminal, and relay is normally closed
End is connect with power supply one end, and the power supply other end is connect with load circuit, and is grounded, and load circuit is connect with relay normally open end;
Wherein, connection TVS protection circuits, the first power MOS pipe Substrate ground between the drain electrode of the first power MOS pipe and source electrode;Load electricity
Road controls the operation of N number of load, and load circuit includes protecting circuit, N >=2.
When circuit works normally, control circuit is connect respectively with the first power MOS pipe grid and load circuit, the first work(
The drain electrode of rate metal-oxide-semiconductor is connect with diode cathode, and diode cathode is connect with relay input terminal, and relay normal-closed end and power supply are just
Pole connects, and power cathode is connect with load circuit, and is grounded, and load circuit is connect with relay normally open end;Control circuit is
One power MOS pipe provides high level, so that the first metal-oxide-semiconductor is in the conduction state, so that relay is closed, to flash
Driving provides power supply, so as to provide power supply to N number of load, realizes flash driving function.
When reverse power connection, control circuit is connect respectively with the first power MOS pipe grid and load circuit, the first power
Metal-oxide-semiconductor drain electrode is connect with diode cathode, and diode cathode is connect with relay input terminal, relay normal-closed end and power cathode
Connection, positive pole is connect with load circuit, and is grounded, and load circuit is connect with relay normally open end;In first power MOS pipe
TVS protection circuit grounds, electric current flows to the cathode of diode from TVS, but diode at this time is cut-off state, cause after
Electric appliance can not be closed;And at this point, electric current flows to relay from the protection circuit of load circuit, but relay patent at this time
It closes so that electric current cannot be formed into a loop, so that entire circuit is in a safe condition.It can be seen that it in the present invention, only needs
Pass through a diode and a relay, it is possible to which for proof load circuit in the case of reverse power connection, circuit is in safety
State greatly reduces the cost of circuit.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the invention discloses one kind to prevent flash driving power reverse-connection protection circuit figure, shown in Figure 1, this is anti-
Only flash driving power reverse-connection protection circuit includes:
Control circuit, power supply, relay, diode, the first power MOS pipe and load circuit;Control circuit is respectively with
One power MOS pipe grid is connected with load circuit, the first power MOS pipe drain electrode connect with diode cathode, diode cathode and
Relay input terminal connects, and relay normal-closed end is connect with power supply one end, and the power supply other end is connect with load circuit, and is grounded,
Load circuit is connect with relay normally open end;Wherein, connection TVS protection circuits between the drain electrode of the first power MOS pipe and source electrode, the
One power MOS pipe Substrate ground;Load circuit controls the operation of N number of load, and load circuit includes protecting circuit, N >=2.
It is understood that the type of power supply includes but not limited to common lead-acid battery, it can also be other kinds of
Accumulator, all are not construed as limiting herein for the purpose of reaching practical application;It is enhanced that power MOS pipe includes but not limited to N-channel
Metal-oxide-semiconductor, TVS protection circuits are the components in effective protection circuit in order to provide circuit leakage path and clamper function,
TVS protection circuits herein include but not limited to transient diode.
When circuit works normally, control circuit is connect respectively with the first power MOS pipe grid and load circuit, the first work(
The drain electrode of rate metal-oxide-semiconductor is connect with diode cathode, and diode cathode is connect with relay input terminal, and relay normal-closed end and power supply are just
Pole connects, and power cathode is connect with load circuit, and is grounded, and load circuit is connect with relay normally open end;Control circuit is
One power MOS pipe provides high level, so that the first metal-oxide-semiconductor is in the conduction state, so that relay is closed, to flash
Driving provides power supply, so that providing power supply to N number of load, realizes flash driving function.
When reverse power connection, control circuit is connect respectively with the first power MOS pipe grid and load circuit, the first power
Metal-oxide-semiconductor drain electrode is connect with diode cathode, and diode cathode is connect with relay input terminal, relay normal-closed end and power cathode
Connection, positive pole is connect with load circuit, and is grounded, and load circuit is connect with relay normally open end;In first power MOS pipe
TVS protection circuit grounds, electric current flows to the cathode of diode from TVS, but diode at this time is cut-off state, cause after
Electric appliance can not be closed;And at this point, electric current flows to relay from the protection circuit of load circuit, but relay patent at this time
It closes so that electric current cannot be formed into a loop, so that entire circuit is in a safe condition.It can be seen that it in the present invention, only needs
Pass through a diode and a relay, it is possible to which for proof load circuit in the case of reverse power connection, circuit is in safety
State greatly reduces the cost of circuit.
Moreover, using the structure chart for preventing flash driving power reverse-connection protection circuit in the present invention, it is also possible that
Maintenance personal is much less workload, improves the working efficiency of maintenance personal when checking either maintenance failure circuit.
The embodiment of the invention discloses one kind specifically to prevent flash driving power reverse-connection protection circuit figure, referring to Fig. 2 institutes
Show, relative to a upper embodiment, the present embodiment has made further instruction and optimization to technical solution.Specifically, this prevents height
Side driving power reverse-connection protection circuit includes:
Control circuit 11, relay 61, lead-acid battery 62, the first power MOS pipe, load circuit and diode D22,
Wherein, the first power MOS pipe includes the enhanced metal-oxide-semiconductor 21 of the first N-channel and TVS protection circuits 23, and TVS23 includes
First transient diode and the second transient diode;
The drain electrode of first N-channel enhanced metal-oxide-semiconductor 21 and source electrode connect respectively the first transient diode cathode in TVS23 and
Second transient diode cathode, the first transient diode anode and the connection of the second transient diode anode, and be grounded, the first N ditches
Enhanced 21 Substrate ground of metal-oxide-semiconductor in road;
Wherein, load circuit is the power MOS pipe group of N number of parallel connection, and it is enhanced that i-th of power MOS pipe includes the second N-channel
Metal-oxide-semiconductor 3i and TVS4iProtect circuit, TVS4iProtect circuit include third transient diode and the 4th transient diode, 1≤i≤
N;
The enhanced metal-oxide-semiconductor 3i drain electrodes of second N-channel and source electrode connect TVS respectively4iIn third transient diode cathode and
4th transient diode cathode, third transient diode anode and the connection of the 4th transient diode anode, and be grounded, the 2nd N ditches
One end of the enhanced metal-oxide-semiconductor 3i substrates connection load 5i in road loads the other end ground connection of 5i;
When circuit works normally, control circuit 11 is respectively in 21 grid of the first power MOS pipe and load circuit N number of
The enhanced metal-oxide-semiconductor 3i grids connection of two N-channels, the drain electrode of the first power MOS pipe 21 are connect with diode D22 cathode, diode D22
Anode is connect with 61 input terminal of relay, and 61 normal-closed end of relay is connect with 62 anode of lead-acid battery, 62 cathode of lead-acid battery with
The protection circuit TVS of the enhanced metal-oxide-semiconductor 3i of N number of second N-channel in load circuit4iConnection, and be grounded, the N in load circuit
A enhanced metal-oxide-semiconductor 3i drain electrodes of second N-channel are connect with relay normally open end;Control circuit provides height for the first power MOS pipe
Level so that the first metal-oxide-semiconductor is in the conduction state, so that relay is closed, drives to flash and provides power supply, so as to
Make to provide power supply to N number of load, realize flash driving function.
When reverse power connection, control circuit 11 respectively with the 2nd N N number of in 21 grid of the first power MOS pipe and load circuit
Channel enhancement metal-oxide-semiconductor 3i grids connect, and the drain electrode of the first power MOS pipe 21 is connect with diode D22 cathode, and diode D22 is just
Pole is connect with 61 input terminal of relay, and 61 normal-closed end of relay is connect with 62 cathode of lead-acid battery, and 62 anode of lead-acid battery is with bearing
Carry the protection circuit TVS of the enhanced metal-oxide-semiconductor 3i of N number of second N-channel in circuit4iConnection, and be grounded, it is N number of in load circuit
The enhanced metal-oxide-semiconductor 3i drain electrodes of second N-channel are connect with relay normally open end;Diode D22 is in cut-off state, and electric current cannot lead to
It crosses diode D22 and flows to relay 61, relay 61 cannot be closed, and at this point, electric current passes through TVS from B points4iA points are flowed to, due to
Relay 61 is not closed, and electric current can not flow back into D points from A points, and electric current can not be allowed to form a circuit, so entire circuit is in
Safe condition.After power up is normal, entire circuit can then work according to normal operating mode, improve circuit
Safety.And in the prior art, need between the enhanced metal-oxide-semiconductor of the second N-channel and the power supply in load circuit
Diode is added, to prevent the reversal connection of power supply, still, with the increase of flash driving quantity, the quantity of diode can also increase,
The cost of vehicle device is not only increased, and but also the free space of vehicle device becomes smaller, it can be seen that, in the present invention
In, only it need to pass through a diode and a relay, it is possible to which proof load circuit is in the case of reverse power connection, at circuit
In safe condition, the cost of circuit is greatly reduced.
The invention also discloses a kind of entire car controller, disclosed prevent flash driving power reverse connecting protection electric including aforementioned
Road.
It is understood that the entire car controller in the present embodiment, because having used aforementioned disclosed flash driving power
Reverse-connection protection circuit can not only effectively reduce the cost of entire car controller, moreover, also so that entire car controller other
The free space of component becomes larger, and improves the practical performance of entire car controller.Certainly, in practical application, to vehicle control
The parameter and model of all kinds of components in device processed in flash driving power reverse-connection protection circuit are not construed as limiting, all are to reach real
For the purpose of the application of border.
The invention also discloses a kind of new-energy automobile, including aforementioned disclosed entire car controller.
Specifically, new-energy automobile currently on the market, because being integrated with more and more intelligent functions, by
The popular welcome of consumer.And the new-energy automobile in the present embodiment, the cost of new energy is not only reduced, and cause
The new-energy automobile has the stronger market competitiveness.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, term " comprising ", "comprising" or its any other variant meaning
Covering non-exclusive inclusion, so that process, method, article or equipment including a series of elements not only include that
A little elements, but also including other elements that are not explicitly listed or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except also there are other identical elements in the process, method, article or apparatus that includes the element.
Flash driving power reverse-connection protection circuit is prevented to one kind provided by the present invention above, is described in detail,
Specific case used herein is expounded the principle of the present invention and embodiment, and the explanation of above example is only used
In facilitating the understanding of the method and its core concept of the invention;Meanwhile for those of ordinary skill in the art, according to the present invention
Thought, there will be changes in specific embodiments and applications, in conclusion the content of the present specification should not be construed as
Limitation of the present invention.