CN208393126U - A kind of high-voltage driving circuit - Google Patents
A kind of high-voltage driving circuit Download PDFInfo
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- CN208393126U CN208393126U CN201820753404.1U CN201820753404U CN208393126U CN 208393126 U CN208393126 U CN 208393126U CN 201820753404 U CN201820753404 U CN 201820753404U CN 208393126 U CN208393126 U CN 208393126U
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- relay
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- control interface
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- circuit
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Abstract
The utility model relates in terms of electronic apparatus, propose a kind of high-voltage driving circuit, the high-voltage driving circuit includes BMS, cathode on-off control circuit, positive on-off control circuit, precharging circuit and power module.The BMS has cathode on-off control interface and positive on-off control interface.The cathode on-off control interface connects cathode on-off control circuit, and the anode on-off control interface connects positive on-off control circuit.The precharging circuit connects positive on-off control interface.The cathode on-off control circuit and positive on-off control circuit are all made of two relays and a motor.Scheme according to the present utility model, the control of a moment is carried out to two small relay during entire high tension loop needs to cut off or disconnect, after high tension loop has reached expected state, there is no need to consume energy again to be controlled, therefore energy has been saved, has reduced power consumption.
Description
Technical field
The utility model relates to field of electronics more particularly to a kind of high-voltage driving circuits.
Background technique
New-energy automobile refers to using unconventional vehicle fuel as a source of power, or using conventional vehicle fuel,
Using new vehicle-mounted power plant, the dynamic Control of comprehensive vehicle and the advanced technology of driving aspect, the technical principle elder generation of formation
Into, the automobile with new technology, new construction.New-energy automobile is of increasing concern with its higher efficiency and lower energy consumption,
But because of the immature of the prior art, also there is very big development space.
Among existing electric car, battery management system has become mostly important an one of component, is
One of three big electricity.Due to the presence of battery management system, the reliability of electric car becomes mostly important in entire vehicle design
One of one consideration point, usual high voltage power distribution is driven by high-voltage relay, and entire high-voltage load is to pass through high pressure
Relay connects vehicle, constitutes a high tension loop, it is ensured that vehicle high pressure can normal use, therefore, high tension loop
Driving just becomes mostly important one of design link.
In existing technical solution, the driving of high-voltage relay be all by a kind of scheme of high-low side driving chip come
It realizes, while high-voltage relay also needs to control the on-off of entire high tension loop, this scheme, which only realizes, realizes one kind
The connection of high-voltage relay is difficult to accomplish low-power consumption.
Because needing a holding power supply in the on-off control for carrying out high tension loop and being added on high-voltage relay, make
It obtains high-voltage relay and is able to maintain closure, to work normally.
So very big power consumption is had in winding one end of high-voltage relay in high-voltage relay driving circuit, as long as
High-voltage relay is in the state of work, and this power consumption can always exist, and drives such mode to realize so using flash
The control of driving and the high tension loop of high-voltage relay is need to consume more more power consumptions.
Utility model content
The technical problems to be solved in the utility model is the high problem of high-voltage relay power consumption.To solve the above-mentioned problems,
The utility model proposes a kind of high-voltage driving circuit, the utility model is specifically to be realized with following technical solution:
The utility model proposes a kind of high-voltage driving circuit, the circuit includes: BMS, cathode on-off control circuit, just
Pole on-off control circuit, precharging circuit and power module；
The BMS has cathode on-off control interface and positive on-off control interface；
The cathode on-off control interface connects cathode on-off control circuit, the anode on-off control interface connection anode
On-off control circuit；
The precharging circuit connects positive on-off control interface；
The power module connects positive on-off control circuit and cathode on-off control circuit.
Further, the cathode on-off control circuit includes the first relay, the second relay and first motor, described
Positive on-off control circuit includes third relay, the 4th relay and the second motor.The relay include resistance and
One gating switch.Two contacts of the gating switch are separately connected power module and ground connection, the gating switch and motor
It is connected.
Specifically, one end of first gating switch connects motor, other end ground connection or connection power module.Described
One end of two gating switches connects motor, other end ground connection or connection power module.
The third relay includes 3rd resistor and third gating switch, the 4th relay include the 4th resistance and
4th gating switch.
One end connection closure control interface of the 3rd resistor, the other end of the 3rd resistor connect power module.
The other end of the 3rd resistor is also connected with the 4th resistance, and the 4th resistance connection disconnects control interface.
One end of the third gating switch connects motor, other end ground connection or connection power module.4th gating
One end of switch connects motor, other end ground connection or connection power module.
Further, the cathode on-off control interface includes that cathode closure control interface and cathode disconnect control interface,
The anode on-off control interface includes that anode closure control interface and anode disconnect control interface.
Further, the cathode closure control interface connects the first relay, and the second relay connection cathode is disconnected
Open control interface.
Further, the anode closure control interface connects third relay, and the 4th relay connection anode is disconnected
Open control interface.
Further, first relay connects first motor, and the other end of the first motor connects the second relay
Device.
Further, the third relay connects the second motor, and the other end of second motor connects the 4th relay
Device.
Further, the power module connects the first relay and the second relay.
Further, the power module connection third relay and the 4th relay.
Further, the positive on-off control circuit is connected with high-voltage load, the cathode on-off control circuit and
High-voltage load is connected.The anode on-off control circuit and cathode on-off control circuit are responsible for controlling the on-off of high tension loop.
When carrying out high tension loop closure control, the first relay is connected, and the second relay disconnects, and power module is logical
It crosses the first relay to power to motor, power module is output signals in motor, driving motor Positive work.Power module passes through
First relay input signal is into closure control, high tension loop closure.
When carrying out high tension loop disconnection control, the second relay is connected, and the first relay disconnects, and power module is logical
It crosses the second relay to power to motor, power module is output signals in motor, driving motor antiport.Power module passes through
To disconnecting in control, high tension loop disconnects second relay input signal.
By adopting the above technical scheme, a kind of high-voltage driving circuit described in the utility model, has the following beneficial effects:
1) in the present invention, the high-voltage relay of script has been changed into the simple relay of two structures and motor,
Using the on-off of the forward and reverse control high tension loop of motor, during entire high tension loop needs to cut off or disconnect
The control of a moment is carried out to two small relay, after high tension loop has reached expected state, there is no need to consume again
Energy is controlled, therefore has saved energy, reduces power consumption；
2) in the present invention, the high-voltage relay of script has been changed into the simple relay of two structures and motor,
Due to more expensive for the relatively general relay of high-voltage relay price, cost is decreased.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of circuit diagram of high-voltage driving circuit provided by the embodiment of the utility model；
Fig. 2 is a kind of on-off control circuit schematic diagram of high-voltage driving circuit provided by the embodiment of the utility model；
Fig. 3 is control signal and the driving road of a kind of high-voltage driving circuit closure control provided by the embodiment of the utility model
Diameter；
Fig. 4 is control signal and the driving road that a kind of high-voltage driving circuit provided by the embodiment of the utility model disconnects control
Diameter.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe.Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are in the premise for not making creative work
Under every other embodiment obtained, fall within the protection scope of the utility model.
Embodiment:
A kind of high-voltage driving circuit is provided in the utility model embodiment, as shown in Figure 1, the circuit includes: BMS
(battery management system), cathode on-off control circuit, positive on-off control circuit, precharging circuit and power module；
The BMS (battery management system) has cathode on-off control interface and positive on-off control interface, the cathode
On-off control circuit, positive on-off control circuit connect BMS (battery management system) with one end of precharging circuit, other end connection
High-voltage load.
As shown in Fig. 2, for the on-off control circuit in high-voltage driving circuit.The cathode on-off control circuit includes first
Relay, the second relay and first motor, the anode on-off control circuit include third relay, the 4th relay and the
Two motors.
The BMS (battery management system) has cathode on-off control interface and positive on-off control interface, the cathode
On-off control interface includes cathode closure control interface and cathode disconnects control interface, and the anode on-off control interface includes just
Pole is closed control interface and anode disconnects control interface.
The cathode closure control interface connects the first relay, and the second relay connection cathode disconnects control and connects
Mouthful.First relay is also connected with first motor, and the other end of the first motor connects the second relay.
The anode closure control interface connects third relay, and the 4th relay connection cathode disconnects control and connects
Mouthful.The third relay is also connected with the second motor, and the other end of second motor connects the 4th relay.
The power module connects the first relay and the second relay, and first relay and the second relay are simultaneously
Connection.
The power module is also connected with third relay and the 4th relay, and the third relay and the 4th relay are simultaneously
Connection.
The precharging circuit connects BMS (battery management system), and the precharging circuit includes preliminary filling resistance and preliminary filling relay
Device.The preliminary filling relay connects BMS (battery management system), and the other end of the preliminary filling relay connects preliminary filling resistance.
The relay includes resistance and gating switch.The relay includes a resistance and a gating switch.Institute
Two contacts for stating gating switch are separately connected power module and ground connection, and the gating switch is connected with motor.
First relay includes first resistor and the first gating switch, second relay include second resistance and
Second gating switch.
Specifically, one end connection closure control interface of the first resistor, the other end of the first resistor connect electricity
Source module.The other end of the first resistor is also connected with second resistance, and the second resistance connection disconnects control interface.
One end of first gating switch connects motor, other end ground connection or connection power module.Second gating
One end of switch connects motor, other end ground connection or connection power module.
The third relay includes 3rd resistor and third gating switch, the 4th relay include the 4th resistance and
4th gating switch.
One end connection closure control interface of the 3rd resistor, the other end of the 3rd resistor connect power module.
The other end of the 3rd resistor is also connected with the 4th resistance, and the 4th resistance connection disconnects control interface.
One end of the third gating switch connects motor, other end ground connection or connection power module.4th gating
One end of switch connects motor, other end ground connection or connection power module.
As shown in figure 3, the control signal and driving path, the first relay for high tension loop closure control are connected, second
Relay disconnects, and power module is powered by the first relay to motor, and power module is output signals in motor, driving motor
Positive work.Through the first relay input signal into closure control, high tension loop is closed power module.
As shown in figure 4, control signal and the driving path of control are disconnected for high tension loop, and the connection of the second relay, first
Relay disconnects, and power module is powered by the second relay to motor, and power module is output signals in motor, driving motor
Antiport.By the second relay input signal to disconnecting in control, high tension loop disconnects power module.
In the present embodiment, two will be replaced with BMS (battery management system) the high pressure main relay connecting originally
The simple relay of structure and a motor, remain original preliminary filling relay.Negative relay will be led and replace with two knots
The simple relay of structure and a motor, main positive relay also replaces with the simple relay of two structures and a motor, former
First preliminary filling relay can then retain.
Traditional high pressure connection type is to be done by high-voltage relay, but the closure of high-voltage relay is the need for
Power supply is kept to exist, if not keeping power supply, entire high-voltage relay cannot work, so that it is logical that entire high tension loop cannot be allowed to do
Disconnected processing, therefore cause higher power consumption.
And preliminary filling relay since the time of connection is shorter does not need that power supply is kept to keep working condition, power consumption is inherently
Less, there is no need to the alternative schemes using two structures simple relay and a motor, can retain preliminary filling relay
Structure.
A kind of high drive circuit that the present embodiment proposes, using the forward and reverse of motor, so that entire high tension loop
The stage of control power supply, only the stage needed electrical source consumption at the instant of state transition, in addition to this, if power supply needs to continue
It keeps connection or disconnects, all do not needed power supply, it is only necessary to control motor for stator and go to defined position, subtract
The consumption for having lacked power supply is conducive to the energy conservation of vehicle.And high-voltage relay is more expensive relative to common relay price, adopts
Use the simple relay of two structures and a motor as the substitution of high-voltage relay, it can also be with save the cost.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (10)
1. a kind of high-voltage driving circuit, which is characterized in that the circuit includes: BMS, cathode on-off control circuit, positive on-off
Control circuit, precharging circuit and power module；
The BMS has cathode on-off control interface and positive on-off control interface；
The cathode on-off control interface connects cathode on-off control circuit, and the anode on-off control interface connects positive on-off
Control circuit；
The precharging circuit connects positive on-off control interface；
The power module connects positive on-off control circuit and cathode on-off control circuit.
2. a kind of high-voltage driving circuit according to claim 1, which is characterized in that the cathode on-off control circuit includes
First relay, the second relay and first motor, the anode on-off control circuit includes third relay, the 4th relay
With the second motor.
3. a kind of high-voltage driving circuit according to claim 2, which is characterized in that first electricity of the first relay connection
The other end of machine, the first motor connects the second relay.
4. a kind of high-voltage driving circuit according to claim 2, which is characterized in that second electricity of third relay connection
The other end of machine, second motor connects the 4th relay.
5. a kind of high-voltage driving circuit according to claim 2, which is characterized in that the cathode on-off control interface includes
Cathode is closed control interface and cathode and disconnects control interface, the anode on-off control interface include anode closure control interface and
Anode disconnects control interface.
6. a kind of high-voltage driving circuit according to claim 5, which is characterized in that the cathode closure control interface connection
First relay, the cathode disconnect control interface and connect the second relay.
7. a kind of high-voltage driving circuit according to claim 5, which is characterized in that the anode closure control interface connection
Third relay, the anode disconnect control interface and connect the 4th relay.
8. a kind of high-voltage driving circuit according to claim 2, which is characterized in that the power module connects the first relay
Device and the second relay.
9. a kind of high-voltage driving circuit according to claim 2, which is characterized in that the power module be also connected with third after
Electric appliance and the 4th relay.
10. a kind of high-voltage driving circuit according to claim 1, which is characterized in that it is described anode on-off control circuit with
High-voltage load is connected, and the cathode on-off control circuit is connected with high-voltage load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820753404.1U CN208393126U (en) | 2018-05-18 | 2018-05-18 | A kind of high-voltage driving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820753404.1U CN208393126U (en) | 2018-05-18 | 2018-05-18 | A kind of high-voltage driving circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208393126U true CN208393126U (en) | 2019-01-18 |
Family
ID=65135791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820753404.1U Active CN208393126U (en) | 2018-05-18 | 2018-05-18 | A kind of high-voltage driving circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208393126U (en) |
-
2018
- 2018-05-18 CN CN201820753404.1U patent/CN208393126U/en active Active
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