CN213973589U - Power management circuit, vehicle control unit comprising same and pure electric vehicle - Google Patents
Power management circuit, vehicle control unit comprising same and pure electric vehicle Download PDFInfo
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- CN213973589U CN213973589U CN202022348820.3U CN202022348820U CN213973589U CN 213973589 U CN213973589 U CN 213973589U CN 202022348820 U CN202022348820 U CN 202022348820U CN 213973589 U CN213973589 U CN 213973589U
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Abstract
The utility model relates to an automobile power management technical field, in particular to power management circuit and contain vehicle control unit and pure electric vehicles of this circuit contain: the switch circuit and the activation signal circuit are arranged on a connecting line between a system normal power line and the VCU, and the VCU is controlled to be dormant or work by opening or closing the normal power line through the switch circuit by utilizing a trigger signal of the activation signal circuit. The utility model discloses circuit structure is simple, and the design is scientific, reasonable, through the closed and the disconnection of circuit direct control VCU system normal electricity, and then control VCU's work and dormancy, VCU work when only having the activating signal, otherwise VCU gets into the dormant state, can effectual reduction put in order car quiescent current, reduces the electric quantity consumption, promotes customer experience, has better popularization and application and worth.
Description
Technical Field
The utility model relates to an automobile power management technical field, in particular to pure electric vehicles vehicle control unit VCU power management circuit and vehicle control unit and pure electric vehicles.
Background
In recent years, the new energy automobile industry has rapidly developed, wherein the pure electric automobile grows fastest in the industry. However, the quiescent current of the whole vehicle is still a big problem nowadays. In general, when a vehicle stops and is not used, a quiescent current exists in the whole vehicle, which may cause consumption of electric quantity and affect the experience of a customer. The quiescent current is reduced by controlling the dormancy of a battery management system, for example, in the Chinese patent with the publication number of CN100574000, in order to reduce the consumption of the quiescent current of the whole vehicle to electric quantity, the state of a storage battery is monitored, the applicable state of an electric appliance of the whole vehicle is controlled, the power generation power and the output voltage of a generator are controlled, the electric balance of the whole vehicle is optimized to the maximum extent, so that the quiescent current of the whole vehicle is reduced, and the scheme is complex in design and is not beneficial to large-scale use.
Disclosure of Invention
Therefore, the utility model provides a pure electric vehicles vehicle control unit VCU power management circuit and vehicle control unit and pure electric vehicles, circuit structure is simple, and the design is scientific, reasonable, and is with low costs, but the volume production.
According to the utility model provides a design, a pure electric vehicles vehicle control unit VCU power management circuit contains: the switch circuit and the activation signal circuit are arranged on a connecting line between a system normal power line and the VCU, and the VCU is controlled to be dormant or work by opening or closing the normal power line through the switch circuit by utilizing a trigger signal of the activation signal circuit.
As the utility model discloses pure electric automobile vehicle control unit VCU power management circuit, further, activation signal circuit contains the fast/fill activation signal circuit slowly, procedure brush write activation signal circuit and ON that parallel arrangement kept off the activation signal circuit.
As the utility model discloses pure electric automobile vehicle control unit VCU power management circuit, further, the activation signal circuit is provided with filter capacitor and diode.
As the utility model discloses pure electric automobile vehicle control unit VCU power management circuit, furtherly, parallelly connected has backward diode among the activation signal circuit to prevent vehicle awakening circuit to the voltage influence of activation signal circuit.
As the utility model discloses pure electric automobile vehicle control unit VCU power management circuit, furtherly, switch circuit adopts MOS pipe switch circuit.
Further, the utility model provides a pure electric vehicles vehicle control unit still contains foretell power management circuit, and trigger signal through the activation signal circuit controls vehicle control unit VCU work or dormancy.
Further, the utility model provides a pure electric vehicles contains foretell power management circuit, utilizes vehicle activation signal control vehicle control unit VCU work or dormancy.
The utility model has the advantages that:
the utility model discloses circuit structure is simple, and the design is scientific, reasonable, through the closed and the disconnection of circuit direct control VCU system normal electricity, and then control VCU's work and dormancy, VCU work when only having the activating signal, otherwise VCU gets into the dormant state, can effectual reduction put in order car quiescent current, reduces the electric quantity consumption, promotes customer experience, has better popularization and application and worth.
Description of the drawings:
FIG. 1 is a schematic block diagram of an embodiment of a power management circuit;
FIG. 2 is a schematic diagram of an embodiment of a power management circuit;
fig. 3 is a schematic diagram of the conventional VCU in the embodiment.
The specific implementation mode is as follows:
the present invention will be described in further detail with reference to the accompanying drawings and technical solutions, and embodiments of the present invention will be described in detail by way of preferred examples, but the embodiments of the present invention are not limited thereto.
The embodiment of the utility model provides a, it is shown with reference to fig. 1, provide a pure electric vehicles vehicle control unit VCU power management circuit, contain: the switch circuit and the activation signal circuit are arranged on a connecting line between a system normal power line and the VCU, and the VCU is controlled to be dormant or work by opening or closing the normal power line through the switch circuit by utilizing a trigger signal of the activation signal circuit. The circuit directly controls the normally-powered on and off of the VCU system, so that the work and the dormancy of the VCU are controlled, the VCU works only when an activation signal exists, otherwise, the VCU enters the dormant state, the quiescent current of the whole vehicle can be effectively reduced, the electric quantity consumption is reduced, the customer experience is improved, and the VCU has good popularization and application values.
As the embodiment of the utility model provides a pure electric vehicles vehicle control unit VCU power management circuit, further, activation signal circuit contains the fast/fill activation signal circuit slowly, procedure brush write activation signal circuit and ON that parallel arrangement kept off the activation signal circuit.
ON the basis of a traditional pure electric vehicle, a function of controlling the VCU to sleep and work is added, and the VCU is controlled to work and sleep by activating signals (an ON gear signal, a fast and slow charging signal and a program flash); when the whole vehicle is in sleep, the newly-added controller disconnects the VCU from normal power, the VCU enters a sleep state, and the static current of the whole vehicle can be reduced by about 60mA, so that the power consumption is reduced.
As the embodiment of the utility model provides a pure electric vehicles vehicle control unit VCU power management circuit, further, the activation signal circuit is provided with filter capacitor and diode. Further, a reverse diode is connected in parallel in the activation signal circuit to prevent the voltage influence of the vehicle wake-up circuit on the activation signal circuit. Further, the switching circuit adopts a MOS tube switching circuit.
Referring to fig. 2, the system constant current adopts a +12V constant current, the slow charging activation signal circuit is designed by the principle of MOS transistors and resistance voltage division, when no slow charging gun is inserted, the MOS transistor (D1) is closed, when a slow charging gun is inserted, the voltage of the MOS transistor (D1) can be modified by the input of the resistance analog quantity of the slow charging gun, so that the MOS transistor (D1) can reach a cut-off voltage, and the slow charging activation signal circuit is turned ON, the fast and slow charging activation signal circuit, the ON shift activation signal circuit and the program flash activation signal circuit are connected in parallel, and when no fast and slow charging signal, program flash signal and ON shift signal exist, the system +12V constant current is disconnected, so as to achieve the purpose of VCU dormancy. The slow charging activation signal circuit shown in the figure is composed of a filter capacitor C1, resistors R1, R2, R3, a MOS tube (D1) and a diode D2, a switch circuit is formed by the MOS tube (D1), the slow charging activation signal circuit, the fast charging activation signal circuit, the ON gear activation signal circuit and the program flash activation signal circuit can be composed of one filter capacitor and one diode, and the D5 diode can prevent the voltage influence of the slow charging wake-up circuit ON the slow charging circuit. When a fast-slow charging signal, an ON gear signal and a program flashing signal appear, the circuit outputs a +12V high level to control the VCU to work, when the whole vehicle is in a dormant state, the VCU can be disconnected from normal power through the circuit, and the VCU enters the dormant state.
Further, the embodiment of the utility model provides an in still provide a pure electric vehicles vehicle control unit, contain foretell power management circuit, through the work of the trigger signal control vehicle control unit VCU or dormancy of activation signal circuit.
Further, the embodiment of the utility model provides an in still provide a pure electric vehicles, contain foretell power management circuit, utilize vehicle activation signal control vehicle control unit VCU work or dormancy.
The present invention is not limited to the above-described embodiments, and various changes can be made by those skilled in the art, and any changes which are equivalent or similar to the present invention are intended to be covered by the scope of the claims of the present invention.
Claims (7)
1. A power management circuit, comprising: the switch circuit and the activation signal circuit are arranged on a connecting line between a system normal power line and the VCU, and the VCU is controlled to be dormant or work by opening or closing the normal power line through the switch circuit by utilizing a trigger signal of the activation signal circuit.
2. The power management circuit of claim 1, wherein the activation signal circuit comprises a fast/slow charge activation signal line, a program flash activation signal line, and an ON-stop activation signal line arranged in parallel.
3. The power management circuit according to claim 1 or 2, wherein the activation signal line is provided with a filter capacitor and a diode.
4. The power management circuit according to claim 1, wherein a reverse diode is connected in parallel in the activation signal circuit to prevent the vehicle wake-up circuit from affecting the voltage of the activation signal circuit.
5. The power management circuit according to claim 4, wherein the switching circuit is a MOS transistor switching circuit.
6. A pure electric vehicle controller is characterized by comprising the power management circuit of any one of claims 1-5, and the VCU of the controller is controlled to work or sleep through a trigger signal of the activation signal circuit.
7. A pure electric vehicle is characterized by comprising the power management circuit of any one of claims 1-5, and a vehicle activation signal is used for controlling a VCU (vehicle control unit) to work or sleep.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022348820.3U CN213973589U (en) | 2020-10-21 | 2020-10-21 | Power management circuit, vehicle control unit comprising same and pure electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022348820.3U CN213973589U (en) | 2020-10-21 | 2020-10-21 | Power management circuit, vehicle control unit comprising same and pure electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213973589U true CN213973589U (en) | 2021-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022348820.3U Active CN213973589U (en) | 2020-10-21 | 2020-10-21 | Power management circuit, vehicle control unit comprising same and pure electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213973589U (en) |
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2020
- 2020-10-21 CN CN202022348820.3U patent/CN213973589U/en active Active
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