CN211892858U - High-voltage distribution circuit capable of preventing power pollution - Google Patents
High-voltage distribution circuit capable of preventing power pollution Download PDFInfo
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- CN211892858U CN211892858U CN201921669246.2U CN201921669246U CN211892858U CN 211892858 U CN211892858 U CN 211892858U CN 201921669246 U CN201921669246 U CN 201921669246U CN 211892858 U CN211892858 U CN 211892858U
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Abstract
The utility model discloses a prevent power pollution's high voltage distribution circuit, including power, main drive circuit, auxiliary drive circuit, eighth diode and ninth diode, main drive circuit one end with the negative high-voltage terminal electric connection of power, the other end with eighth diode electric connection, the eighth diode with the positive high-voltage terminal electric connection of power, auxiliary drive circuit one end with the negative high-voltage terminal electric connection of power, the other end with ninth diode electric connection, the ninth diode with the positive high-voltage terminal electric connection of power not only can effectually prevent the drive reverse interference that leads to under main drive circuit and the auxiliary drive circuit misconduction condition, can provide the stable redundant protection of circuit for the short circuit damage back appears in main drive circuit and the auxiliary drive circuit simultaneously.
Description
Technical Field
The utility model relates to the technical field of automobiles, concretely relates to prevent power pollution's high voltage distribution circuit.
Background
With the increasing prominence of energy crisis and environmental problems, the development of clean electric vehicles with high efficiency, energy conservation, low noise and zero emission becomes a necessary trend for the development of the domestic and foreign automobile industry, and pure electric vehicles with energy conservation, environmental protection, safety and reliability are more and more concerned by people.
In a pure electric vehicle, a high-voltage distribution box is an important component of an electric system. The basic function of the high-voltage distribution box is to realize distribution and management of high voltage electricity. Such as: the high-voltage box is connected with a power battery to supply high-voltage electricity to main vehicle-mounted electric equipment such as a motor controller, a DC/DC, an oil pump, an air conditioner compressor, electric defrosting and electric heating.
Therefore, the voltage stability of the high-voltage distribution box influences the operation stability of the whole electric vehicle system and is a necessary condition for ensuring the safety and the reliability of the electric vehicle.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the weak point among the prior art and provide a prevent power pollution's high voltage distribution circuit, this prevent power pollution's high voltage distribution circuit not only can effectually prevent the drive interference that leads to under main drive circuit and the auxiliary drive circuit misconduction condition, can provide the stable redundant protection of circuit for the short circuit damage back appears in main drive circuit and the auxiliary drive circuit simultaneously.
The purpose of the utility model is realized through the following technical scheme:
the utility model provides a prevent power pollution's high voltage distribution circuit, including power, main drive circuit, auxiliary drive circuit, eighth diode and ninth diode, main drive circuit one end with the negative high-voltage terminal electric connection of power, the other end with eighth diode electric connection, the eighth diode with the positive high-voltage terminal electric connection of power, auxiliary drive circuit one end with the negative high-voltage terminal electric connection of power, the other end with ninth diode electric connection, the ninth diode with the positive high-voltage terminal electric connection of power.
Furthermore, the reverse bearing voltage of the eighth diode and the ninth diode is higher than the high-voltage value of the power supplies on the two sides, and a margin of 1.5-2 times is reserved.
Further, the current values of the eighth diode and the ninth diode can be calculated according to a power calculation formula required to be driven by the high-voltage distribution module:
wherein P represents the main drive controller of the main drive circuit, U represents the bus voltage, and I represents the current.
Furthermore, the main driving circuit comprises a first relay, a first diode, a first resistor, a second relay, a first fuse and a main driving controller, one end of the first relay is connected with the anode of the first diode, the other end of the first relay is connected with the cathode of the eighth diode, one end of the first resistor is connected with the cathode of the first diode, the other end of the first resistor is connected with the second relay, the common end of the first resistor is connected with the first fuse, the first fuse is connected with the main driving controller, and the other end of the main driving controller is connected with the negative high-voltage end of the power supply.
Furthermore, the auxiliary driving circuit comprises a fifth relay, a fifth diode, a fifth resistor, a sixth relay, a third fuse, a fourth fuse, two alternating current converters, a steering motor controller and a pumping motor controller, wherein one end of the fifth relay is connected with the anode of the fifth diode, the other end of the fifth relay is connected with the sixth relay, the common end of the fifth relay is connected with the cathode of the ninth diode, one end of the fifth resistor is connected with the cathode of the fifth diode, the other end of the fifth resistor is connected with the sixth relay, the common end of the fifth resistor is connected with the third fuse and the fourth fuse, one end of the alternating current converter is connected with the third fuse, the other end of the alternating current converter is connected with the negative high-voltage end of the power supply, one end of the alternating current converter is connected with the first fuse, the other end of the alternating current converter is connected with the negative high-voltage end of the power supply, and the two alternating current converters are respectively connected with the steering motor controller and the inflating motor controller.
Further, still including battery circuit, electric air conditioner circuit, electric defrosting circuit and electric heating circuit, battery circuit one end with the positive high-voltage end of power is connected, electric air conditioner circuit one end with the positive high-voltage end of power is connected, electric defrosting circuit one end with the positive high-voltage end of power is connected, electric heating circuit one end with the positive high-voltage end of power is connected, the battery circuit other end the electric air conditioner circuit other end the electric defrosting circuit other end the electric heating circuit other end all with the negative high-voltage end of power is connected.
Further, the battery circuit comprises a fourth diode, a fourth relay, a second fuse, a dc converter and a battery controller, wherein the anode of the fourth diode is connected to the fourth relay, the cathode of the fourth diode is connected to the positive high-voltage end of the power supply, one end of the fourth relay is connected to the cathode of the fourth diode, the other end of the fourth relay is connected to the second fuse, one end of the dc converter is connected to the second fuse, the other end of the dc converter is connected to the negative high-voltage end of the power supply, and the battery controller is connected to the dc converter.
Further, electric air conditioner circuit is including third relay, fifth fuse and electric air conditioner controller, third relay one end with the positive high-voltage end of power is connected, the other end with the fifth fuse is connected, the fifth fuse with electric air conditioner controller connects, electric air conditioner controller's the other end with the negative high-voltage end of power is connected.
Furthermore, the electric defrosting circuit comprises a seventh relay, a sixth fuse and an electric defrosting controller, wherein one end of the seventh relay is connected with the positive high-voltage end of the power supply, the other end of the seventh relay is connected with the sixth fuse, the sixth fuse is connected with the electric defrosting controller, and the other end of the electric defrosting controller is connected with the negative high-voltage end of the power supply.
Further, the electric heating circuit is including eighth relay, seventh fuse and electric heating controller, eighth relay one end with the positive high-voltage end of power is connected, the other end with the seventh fuse is connected, the seventh fuse with electric heating controller connects, electric heating controller's the other end with the negative high-voltage end of power is connected.
The utility model has the advantages that: the high-voltage distribution circuit capable of preventing power pollution is provided, driving reverse interference caused under the condition that a main driving circuit and an auxiliary driving circuit are conducted by mistake can be effectively prevented, meanwhile, after short circuit damage occurs in the main driving circuit and the auxiliary driving circuit, stable redundancy protection of the circuit is provided, the stability of voltage in the high-voltage distribution circuit is effectively improved, and the safety of a high-voltage distribution system is also improved.
Drawings
The invention is further described with the aid of the accompanying drawings, in which, however, the embodiments do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be derived from the following drawings without inventive effort.
Fig. 1 is the utility model discloses an electric automobile high voltage system relay terminal adhesion detection schematic diagram of an embodiment.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
As shown in fig. 1, the present embodiment provides a high voltage power distribution circuit capable of preventing power pollution, which includes a power supply, a main driving circuit, an auxiliary driving circuit, an eighth diode D8 and a ninth diode D9, wherein one end of the main driving circuit is electrically connected to a negative high voltage end of the power supply, the other end of the main driving circuit is electrically connected to an eighth diode D8, the eighth diode D8 is electrically connected to a positive high voltage end of the power supply, one end of the auxiliary driving circuit is electrically connected to the negative high voltage end of the power supply, the other end of the auxiliary driving circuit is electrically connected to the ninth diode D9, and the ninth diode D9 is electrically connected to the positive high voltage end of the power supply, and due to the addition of the eighth diode D8 and the ninth diode D9, reverse driving interference caused by mis-conduction of the main driving and the auxiliary driving can; meanwhile, after the first diode D1D1\ the fifth diode D5D5 is short-circuited and damaged, stable redundant protection of a circuit is provided, the stability of voltage in a high-voltage distribution circuit is further improved, and the safety of a high-voltage distribution system is also improved.
As shown in FIG. 1, in the preferred embodiment, the reverse bearing voltage of the eighth diode D8 and the ninth diode is higher than the high voltage value of the power supplies on both sides, and a margin of 1.5-2 times is left.
As shown in fig. 1, in the preferred embodiment, due to the positive peak inrush current IFSM: the IFSM refers to the maximum non-repetitive half sine wave surge current which can be allowed under the condition that the fundamental wave width of a sine half wave surge pulse is 8.3ms or 10ms when the junction temperature is a certain temperature; therefore, the specific calculation of the current value can calculate the current values of the eighth diode and the ninth diode D9 according to the power to be driven by the high-voltage distribution module according to the calculation formula of the power to be driven by the high-voltage distribution module:
wherein P represents the main drive controller of the main drive circuit, U represents the bus voltage, and I represents the current.
When the power of the main drive controller is 200KW, the bus voltage is 540V, the current calculation value is 370A, the problem of allowance is also considered when the forward current of the diode is selected, so that the eighth diode D8 can select a protection diode of about 500-600A;
since the power of the auxiliary drive controller is low, the current requirement is typically less than that of the eighth diode D8 when selected.
As shown in fig. 1, the main driving circuit in this embodiment includes a first relay K1, a first diode D1, a first resistor R1, a second relay K2, a first fuse F1 and a main driving controller, one end of the first relay is connected to the positive electrode of the first diode D1, the other end of the first relay K1 is connected to the second relay K2, and the common end of the first relay K is connected to the negative electrode of the eighth diode D8, one end of the first resistor R1 is connected to the negative electrode of the first diode D1, the other end of the first resistor R1 is connected to the second relay K2, and the common end of the first relay K1, the first fuse F1 is connected to the main driving controller, and the other end of the main driving controller is connected to the negative high voltage end of the power supply.
As shown in fig. 1, the auxiliary driving circuit in this embodiment includes a fifth relay K5, a fifth diode D5, a fifth resistor R5, a sixth relay K6, a third fuse F3, a fourth fuse F4, two AC current converters DC/AC, a steering motor controller and a pump motor controller, one end of the fifth relay K5 is connected to the positive electrode of the fifth diode D5, the other end of the fifth relay K5 is connected to the sixth relay K6, the common end is connected to the negative electrode of the ninth diode D9, one end of a fifth resistor R5 is connected to the negative electrode of the fifth diode D5, the other end of the fifth resistor R5 is connected to the sixth relay K6, the common end is connected to the third fuse F3 and the fourth fuse F4, one end of an AC current converter DC/AC is connected to the third fuse F3, the other end is connected to the negative high-voltage end of the power supply, one end of the AC current converter DC/AC is connected to the first fuse, the other end is connected with the negative high-voltage end of the power supply, and the two alternating current converters DC/AC are respectively connected with the steering motor controller and the inflating motor controller.
As shown in fig. 1, the embodiment further includes a battery circuit, an electric air conditioning circuit, an electric defrosting circuit, and an electric heating circuit, one end of the battery circuit is connected to the positive high-voltage end of the power supply, the other end of the battery circuit is connected to the negative high-voltage end of the power supply, one end of the electric air conditioning circuit is connected to the positive high-voltage end of the power supply, the other end of the electric air conditioning circuit is connected to the negative high-voltage end of the power supply, one end of the electric defrosting circuit is connected to the positive high-voltage end of the power supply, the other end of the electric defrosting circuit is connected to the negative high-voltage end of the power supply, one end of the electric heating circuit is connected.
As shown in fig. 1, the battery circuit in this embodiment includes a fourth diode D4, a fourth relay K4, a second fuse F2, a DC converter DC/DC, and a battery controller, wherein an anode of the fourth diode D4 is connected to the fourth relay K4, a cathode of the fourth diode D4 is connected to a positive high-voltage end of the power supply, one end of the fourth relay K4 is connected to a cathode of the fourth diode D4, the other end is connected to the second fuse F2, one end of the DC converter DC/DC is connected to the second fuse F2, the other end is connected to a negative high-voltage end of the power supply, and the battery controller is connected to the DC converter DC/DC.
As shown in fig. 1, the electric air conditioning circuit in this embodiment includes a third relay K3, a fifth fuse F5 and an electric air conditioning controller, one end of the third relay K3 is connected to the positive high voltage end of the power supply, the other end is connected to the fifth fuse F5, the fifth fuse F5 is connected to the electric air conditioning controller, and the other end of the electric air conditioning controller is connected to the negative high voltage end of the power supply.
As shown in fig. 1, the electric defrosting circuit in this embodiment includes a seventh relay K7, a sixth fuse F6 and an electric defrosting controller, one end of the seventh relay K7 is connected to the positive high-voltage end of the power supply, the other end is connected to the sixth fuse F6, the sixth fuse F6 is connected to the electric defrosting controller, and the other end of the electric defrosting controller is connected to the negative high-voltage end of the power supply.
As shown in fig. 1, the electric heating circuit in this embodiment includes an eighth relay K8, a seventh fuse F7, and an electric heating controller, one end of the eighth relay K8 is connected to the positive high-voltage end of the power supply, the other end is connected to the seventh fuse F7, the seventh fuse F7 is connected to the electric heating controller, and the other end of the electric heating controller is connected to the negative high-voltage end of the power supply.
It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. A high-voltage distribution circuit capable of preventing power pollution is characterized in that: including power, main drive circuit, supplementary drive circuit, eighth diode and ninth diode, main drive circuit one end with the negative high voltage end electric connection of power, the other end with eighth diode electric connection, the eighth diode with the positive high voltage end electric connection of power, supplementary drive circuit one end with the negative high voltage end electric connection of power, the other end with ninth diode electric connection, the ninth diode with the positive high voltage end electric connection of power.
2. The power contamination resistant high voltage power distribution circuit of claim 1, wherein: and the reverse bearing voltage of the eighth diode and the ninth diode is higher than the high-voltage value of the power supplies on the two sides, and 1.5-2 times of allowance is reserved.
3. The power contamination resistant high voltage power distribution circuit of claim 1, wherein: the current values of the eighth diode and the ninth diode can be calculated according to a power calculation formula required to be driven by the high-voltage distribution module:
wherein P represents the main drive controller of the main drive circuit, U represents the bus voltage, and I represents the current.
4. The power contamination resistant high voltage power distribution circuit of claim 1, wherein: the main driving circuit comprises a first relay, a first diode, a first resistor, a second relay, a first fuse and a main driving controller, one end of the first relay is connected with the anode of the first diode, the other end of the first relay is connected with the cathode of the eighth diode, one end of the first resistor is connected with the cathode of the first diode, the other end of the first resistor is connected with the common end of the second relay, the first fuse is connected with the main driving controller, and the other end of the main driving controller is connected with the negative high-voltage end of the power supply.
5. The power contamination resistant high voltage power distribution circuit of claim 1, wherein: the auxiliary driving circuit comprises a fifth relay, a fifth diode, a fifth resistor, a sixth relay, a third fuse, a fourth fuse, two alternating current converters, a steering motor controller and a pumping motor controller, wherein one end of the fifth relay is connected with the anode of the fifth diode, the other end of the fifth relay is connected with the sixth relay, the public end of the fifth relay is connected with the cathode of the ninth diode, one end of the fifth resistor is connected with the cathode of the fifth diode, the other end of the fifth resistor is connected with the sixth relay, the public end of the fifth resistor is connected with the third fuse and the fourth fuse, one end of the alternating current converter is connected with the third fuse, the other end of the alternating current converter is connected with the negative high-voltage end of the power supply, one end of the alternating current converter is connected with the first fuse, and the other end of the alternating current converter is connected with the negative high-voltage end of the power supply, the two alternating current converters are respectively connected with the steering motor controller and the inflating motor controller.
6. A power contamination resistant high voltage power distribution circuit as recited in claim 3, wherein: still including battery circuit, electric air conditioner circuit, electric defrosting circuit and electric heating circuit, battery circuit one end with the positive high-voltage end of power is connected, electric air conditioner circuit one end with the positive high-voltage end of power is connected, electric defrosting circuit one end with the positive high-voltage end of power is connected, electric heating circuit one end with the positive high-voltage end of power is connected, the battery circuit other end the electric air conditioner circuit other end the electric defrosting circuit other end the electric heating circuit other end all with the negative high-voltage end of power is connected.
7. The power contamination resistant high voltage power distribution circuit of claim 6, wherein: the battery circuit comprises a fourth diode, a fourth relay, a second fuse, a direct current converter and a battery controller, wherein the anode of the fourth diode is connected with the fourth relay, the cathode of the fourth diode is connected with the positive high-voltage end of the power supply, one end of the fourth relay is connected with the cathode of the fourth diode, the other end of the fourth relay is connected with the second fuse, one end of the direct current converter is connected with the second fuse, the other end of the direct current converter is connected with the negative high-voltage end of the power supply, and the battery controller is connected with the direct current converter.
8. The power contamination resistant high voltage power distribution circuit of claim 6, wherein: the electric air conditioning circuit comprises a third relay, a fifth fuse and an electric air conditioning controller, wherein one end of the third relay is connected with the positive high-voltage end of the power supply, the other end of the third relay is connected with the fifth fuse, the fifth fuse is connected with the electric air conditioning controller, and the other end of the electric air conditioning controller is connected with the negative high-voltage end of the power supply.
9. A power contamination resistant high voltage power distribution circuit as recited in claim 3, wherein: the electric defrosting circuit comprises a seventh relay, a sixth fuse and an electric defrosting controller, one end of the seventh relay is connected with the positive high-voltage end of the power supply, the other end of the seventh relay is connected with the sixth fuse, the sixth fuse is connected with the electric defrosting controller, and the other end of the electric defrosting controller is connected with the negative high-voltage end of the power supply.
10. The power contamination resistant high voltage power distribution circuit of claim 6, wherein: the electric heating circuit is including eighth relay, seventh fuse and electric heating controller, eighth relay one end with the positive high-voltage end of power is connected, the other end with the seventh fuse is connected, the seventh fuse with the electric heating controller is connected, the other end of electric heating controller with the negative high-voltage end of power is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921669246.2U CN211892858U (en) | 2019-10-08 | 2019-10-08 | High-voltage distribution circuit capable of preventing power pollution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921669246.2U CN211892858U (en) | 2019-10-08 | 2019-10-08 | High-voltage distribution circuit capable of preventing power pollution |
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| Publication Number | Publication Date |
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| CN211892858U true CN211892858U (en) | 2020-11-10 |
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| CN201921669246.2U Active CN211892858U (en) | 2019-10-08 | 2019-10-08 | High-voltage distribution circuit capable of preventing power pollution |
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- 2019-10-08 CN CN201921669246.2U patent/CN211892858U/en active Active
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