CN211075542U - High-voltage system of vehicle and vehicle - Google Patents
High-voltage system of vehicle and vehicle Download PDFInfo
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- CN211075542U CN211075542U CN201921750546.3U CN201921750546U CN211075542U CN 211075542 U CN211075542 U CN 211075542U CN 201921750546 U CN201921750546 U CN 201921750546U CN 211075542 U CN211075542 U CN 211075542U
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Abstract
The utility model discloses a high-pressure system and vehicle of vehicle, high-pressure system includes: the power supply circuit comprises a power battery and a high-voltage circuit connected with the power battery; the power utilization circuit is connected with the power supply circuit and comprises a plurality of power utilization loops; an arc extinguishing assembly including a plurality of arc extinguishing control switches that are respectively connected to part or all of the high-voltage circuit and the plurality of electric circuits to extinguish arcs when the part or all of the high-voltage circuit and the plurality of electric circuits are turned on and off.
Description
Technical Field
The utility model belongs to the technical field of the vehicle and specifically relates to a high-pressure system and vehicle of vehicle are related to.
Background
In the related art, in a new energy automobile, because a high-voltage power battery is adopted, a switch on an electric circuit can be generated along with an electric arc in the contact process, in order to avoid the harm of the electric arc, generally, a contact of a contactor is placed in a sealed environment such as inert gas and the like which is beneficial to arc extinguishing, or the electric arc is elongated by utilizing magnetic force to be beneficial to arc extinguishing, but the effect is not ideal, and a low-voltage contactor still does not have a proper arc extinguishing device.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. To this end, an object of the present invention is to provide a high voltage system of a vehicle, which has an arc extinguishing module for controlling the connection and disconnection of a plurality of power utilization circuits, and the arc extinguishing module can extinguish arcs when the plurality of power utilization circuits are connected and disconnected.
The utility model discloses still provide a vehicle that has above-mentioned high-pressure system.
According to the utility model discloses a high-pressure system for vehicle includes: the power supply circuit comprises a power battery and a high-voltage circuit connected with the power battery; the power utilization circuit is connected with the power supply circuit and comprises a plurality of power utilization loops; an arc extinguishing assembly including a plurality of arc extinguishing control switches that are respectively connected to part or all of the high-voltage circuit and the plurality of electric circuits to extinguish arcs when the part or all of the high-voltage circuit and the plurality of electric circuits are turned on and off.
According to the utility model discloses a high-voltage system for vehicle, through setting up the arc extinguishing subassembly, the arc extinguishing subassembly includes a plurality of arc extinguishing control switch, a plurality of arc extinguishing control switch can be respectively with high-voltage circuit in the part or whole in a plurality of power consumption return circuit link to each other, when high-voltage circuit switch-on or disconnection, the both ends of switch can produce electric arc, and arc extinguishing control switch is through the high-frequency break-make of controlling a plurality of arc extinguishing control switch, produce electric arc or be about to produce electric arc between the contact in the twinkling of an eye or breaking at the arc switch-on, provide the load through the high rising rate energy pulse of control arc extinguishing control switch output, make arc extinguishing control switch's contact both ends voltage be less than arcing voltage, extinguish electric arc or restrain electric arc production in microsecond level time.
According to the utility model discloses an embodiment, a plurality of arc extinguishing control switches include: and the high-voltage circuit comprises a positive electrode arc extinguishing control switch connected with the positive electrode of the high-voltage circuit, a pre-charging arc extinguishing control switch and a negative electrode arc extinguishing control switch connected with the negative electrode of the high-voltage circuit.
According to the utility model discloses an embodiment, with the electric circuit including defrosting return circuit, a plurality of arc extinguishing control switches still include: and the defrosting arc extinguishing control switch is connected with the defrosting loop.
According to the utility model discloses an embodiment, high-pressure system still includes: a charging circuit, the plurality of arc extinguishing control switches further comprising: and the charging arc extinguishing control switch is connected with the charging loop.
According to the utility model discloses an embodiment, a plurality of arc extinguishing control switch are switched capacitor contactor.
According to the utility model discloses an embodiment, the arc extinguishing subassembly still includes: and the controller is connected with the plurality of arc extinguishing control switches to control the plurality of arc extinguishing control switches.
The vehicle according to the present invention is briefly described below.
According to the utility model discloses a be provided with the high-pressure system of above-mentioned embodiment on the vehicle, because according to the utility model discloses a be provided with the high-pressure system in the above-mentioned embodiment on the vehicle, consequently this vehicle has replaced traditional pre-charging contactor through setting up the arc extinguishing subassembly, greatly reduced the cost of high-pressure system, high-pressure system's integrated level is higher, and is more convenient to the control of each return circuit.
According to an embodiment of the present invention, the vehicle is an electric vehicle.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic circuit diagram of a high voltage system according to the present invention.
Reference numerals:
The power supply circuit 11, the power battery 111,
using the circuit 12, the electric defrosting 121, the charging circuit 13
A controller 101.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
A high voltage system 1 for a vehicle according to an embodiment of the present invention is described below with reference to fig. 1.
The high-voltage system 1 of the vehicle comprises a power supply circuit 11, a power utilization circuit 12 and an arc extinguishing assembly, wherein the power supply circuit 11 comprises a power battery 111 and a high-voltage loop connected with the power battery 111, the power utilization circuit 12 is connected with the power supply circuit 11, the power utilization circuit 12 comprises a plurality of power utilization loops, the arc extinguishing assembly comprises a plurality of arc extinguishing control switches, the plurality of arc extinguishing control switches are respectively connected with part or all of the high-voltage loop and the plurality of power utilization loops, and arc extinguishing is carried out when the part or all of the high-voltage loop and the plurality of power utilization loops are connected or disconnected.
In the related art, in a new energy automobile, because a high-voltage power battery is adopted, a switch on an electric circuit can be generated along with an electric arc in the contact process, in order to avoid the harm of the electric arc, generally, a contact of a contactor is placed in a sealed environment such as inert gas and the like which is beneficial to arc extinguishing, or the electric arc is elongated by utilizing magnetic force to be beneficial to arc extinguishing, but the effect is not ideal, and a low-voltage contactor still does not have a proper arc extinguishing device.
In a specific practical process, the high voltage of the bus end of the motor controller is required to reach 95% or more of the voltage of the power battery, and the total voltage of the power battery is higher than 300V, otherwise the whole vehicle controller does not execute a closing instruction, the whole vehicle controller disconnects the pre-charging contactor after the pre-charging time is longer than 5 seconds, and the main positive contactor is directly closed to cause the problems of adhesion of the contactor, damage of components and capacitors due to large direct current, and the like.
According to the utility model discloses a high-voltage system 1 for vehicle, through setting up the arc extinguishing subassembly, the arc extinguishing subassembly includes a plurality of arc extinguishing control switch, a plurality of arc extinguishing control switch can be respectively with the high-pressure return circuit in the part or all link to each other in a plurality of power consumption return circuit, when high-pressure return circuit switch-on or disconnection, the both ends of switch can produce electric arc, and arc extinguishing control switch is through the high-frequency break-make of controlling a plurality of arc extinguishing control switch, produce electric arc or be about to produce electric arc between the contact in the twinkling of an eye or breaking at the arc switch-on, provide the load through the high rising rate energy pulse of control arc extinguishing control switch output, make arc extinguishing control switch's contact both ends voltage be less than arcing voltage, extinguish electric arc or restrain electric arc production in microse.
According to the utility model discloses a high-voltage system 1, through setting up the arc extinguishing subassembly, break-make in can simultaneous control high-voltage circuit and a plurality of power consumption return circuit, when high-voltage circuit and a plurality of power consumption return circuit switch-on and disconnection, utilize arc extinguishing control switch's high frequency break-make in order to avoid high-voltage circuit and power consumption return circuit when switch-on or disconnection produced electric arc, produced electric arc when switch-on or disconnection in power consumption return circuit and the high-voltage circuit is avoided effectively to the arc extinguishing subassembly, the arrangement of pre-charging contactor in the circuit has been reduced, and the cost is reduced.
According to an embodiment of the present invention, the plurality of arc extinguishing control switches include a positive arc extinguishing control switch connected to the positive electrode of the high voltage loop, a pre-charging arc extinguishing control switch, and a negative arc extinguishing control switch connected to the negative electrode of the high voltage loop, wherein the positive arc extinguishing control switch is used to control the on/off between the positive electrode of the high voltage loop and the power battery 111, and during the on-off of the positive electrode of the high voltage loop, the positive arc extinguishing control switch prevents the positive electrode of the high voltage loop from generating an arc through the on/off of the high frequency control circuit; the negative arc extinguishing control switch is used for controlling the connection and disconnection between the negative electrode of the high-voltage loop and the power battery 111, and the negative arc extinguishing control switch avoids electric arcs from being generated on the negative electrode of the high-voltage loop through the connection and disconnection of high frequency of the control circuit in the process of connecting the negative electrode of the high-voltage loop; the pre-charging arc-extinguishing control switch can be used for controlling the power utilization loop, the power utilization loop is switched on through the pre-charging arc-extinguishing control switch when being switched on or switched off, and in the process of switching on the power utilization loop, electric arcs can be prevented from being generated in the power utilization loop by controlling the on-off of high frequency of the power utilization loop.
According to the utility model discloses an embodiment, including the defrosting return circuit with the electric circuit, a plurality of arc extinguishing control switches still include the defrosting arc extinguishing control switch that links to each other with the defrosting return circuit, including the defrosting return circuit in the electric circuit, be provided with the electric defrosting 121 that is used for the vehicle defrosting on the defrosting return circuit, electric defrosting 121 is the power consumption component in the defrosting return circuit, when the defrosting function is opened to the vehicle, can put through the defrosting return circuit through defrosting arc extinguishing switch, the break-make of passing through control defrosting arc extinguishing switch high frequency can avoid producing electric arc in defrosting arc extinguishing control switch position simultaneously, with the reliable and stable who ensures the defrosting return circuit, improve the security in defrosting return circuit, reduce the harm that electric arc brought.
According to the utility model discloses an embodiment, still include charging loop 13, arc extinguishing control switch still includes the arc extinguishing control switch that charges that links to each other with charging loop 13, when the vehicle charges to power battery 111, external power source passes through supply socket and constitutes charging loop 13, and charging loop 13 and supply circuit 11 intercommunication, thereby control the produced electric arc in charging process through setting up the arc extinguishing control switch that charges between supply circuit 11 and the charging loop 13, the arc extinguishing control switch that charges can be through the high frequency break-make in order to avoid producing electric arc when charging loop 13 and the switch-on of power consumption loop, reduce the harm that electric arc brought.
According to the utility model discloses an embodiment, a plurality of arc extinguishing control switches are switching capacitance contactor, construct a plurality of arc extinguishing control switches for switching capacitance contactor can reduce high voltage system 1's cost, improve high voltage system 1's stability.
According to the utility model discloses an embodiment, the arc extinguishing subassembly still includes controller 101, controller 101 links to each other with a plurality of arc extinguishing control switch, control to a plurality of arc extinguishing control switch, controller 101 can link to each other with a plurality of arc extinguishing control switch, controller 101 can control a plurality of arc extinguishing control switch simultaneously, make the arc extinguishing subassembly can be to the break-make integrated control of a plurality of return circuits, and controller 101 can link to each other with the ECU of vehicle, thereby realize the control to each circuit break-make, the arc extinguishing subassembly can integrate the arc extinguishing function to a plurality of return circuits, the integrated level of 1 circuit of high-voltage system has been improved, it is more convenient to make the control of 1 circuit of high-voltage system.
The vehicle according to the present invention is briefly described below.
According to the utility model discloses a be provided with high-voltage system 1 of above-mentioned embodiment on the vehicle, because according to the utility model discloses a be provided with high-voltage system 1 in the above-mentioned embodiment on the vehicle, consequently this vehicle has replaced traditional pre-charging contactor through setting up the arc extinguishing subassembly, greatly reduced high-voltage system 1's cost, high-voltage system 1's integrated level is higher, and is more convenient to the control of each return circuit.
According to the utility model discloses an embodiment, according to the utility model discloses the vehicle can be electric automobile.
The specific function of the arc extinguishing assembly according to the embodiment of the present invention is described below.
According to the utility model discloses an arc extinguishing subassembly has functions such as self-checking, peripheral fault collection, record, demonstration, report, overcomes to touch the contactor closure and divides disconnected work in the twinkling of an eye, and the closed spring arc extinguishing of contactor that a plurality of arc extinguishing control switches in the arc extinguishing subassembly can control to correspond to the realization is to each contactor disconnected arc extinguishing, the elimination divides disconnected overvoltage, promotes contactor current breaking force, ensures that the disconnected electric life of contactor reaches its mechanical life, improves system security, reliability.
The arc extinguishing component can be connected in series with a switch, a connector, a fuse link and a lead of a load loop, and can realize arc extinguishing of the contactor at the positions. Greatly reducing the risk of burning and adhesion of contact arcs. The electrical service life of the contactor is greatly prolonged, so that the contactor does not need to be used in a capacity reducing mode, and the economical efficiency and the safety of the whole vehicle are improved.
The arc extinction control switch carries out arc extinction through pulse, and the pulse arc extinction is actually realized by using a switching capacitor contactor. Generally, a switching capacitor contactor is provided with an inrush current suppression contact and a main contact, and the opening distance of the inrush current suppression contact is smaller than that of the main contact. When the capacitor is switched, the inrush current suppression contact is firstly connected into the main circuit, the inrush current suppression contact is provided with a current limiting resistor, the inrush current value can be effectively reduced at the moment of switching on, and the main contact is connected into the main circuit after a plurality of milliseconds, so that the current limiting resistor is short-circuited, and power is continuously supplied to the capacitor. The inrush current suppression contacts open first when the capacitor is cut off, reducing arcing damage to the main contacts.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.
In the description of the present invention, "a plurality" means two or more.
In the description of the present invention, the first feature "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween.
In the description of the invention, the first feature being "on", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (8)
1. A high-pressure system of a vehicle, comprising:
a power supply circuit (11), wherein the power supply circuit (11) comprises a power battery (111) and a high-pressure circuit connected with the power battery (111);
a power utilization circuit (12), wherein the power utilization circuit (12) is connected with the power supply circuit (11), and the power utilization circuit (12) comprises a plurality of power utilization loops;
an arc extinguishing assembly including a plurality of arc extinguishing control switches that are respectively connected to part or all of the high-voltage circuit and the plurality of electric circuits to extinguish arcs when the part or all of the high-voltage circuit and the plurality of electric circuits are turned on and off.
2. The high voltage system of a vehicle of claim 1, wherein the plurality of arcing control switches comprises:
and the high-voltage circuit comprises a positive electrode arc extinguishing control switch connected with the positive electrode of the high-voltage circuit, a pre-charging arc extinguishing control switch and a negative electrode arc extinguishing control switch connected with the negative electrode of the high-voltage circuit.
3. The high voltage system of a vehicle of claim 1, wherein the utilization circuit comprises a defrost circuit, the plurality of arc extinction control switches further comprising:
and the defrosting arc extinguishing control switch is connected with the defrosting loop.
4. The high pressure system of a vehicle of claim 1, further comprising: a charging circuit (13), the plurality of arc quenching control switches further comprising:
and the charging arc extinguishing control switch is connected with the charging loop (13).
5. The high voltage system of a vehicle of any of claims 1-4, wherein the plurality of quenching control switches are switched capacitor contactors.
6. The high voltage system of a vehicle of claim 1, wherein the arc extinguishing assembly further comprises: a controller (101), the controller (101) is connected with the plurality of arc extinguishing control switches to control the plurality of arc extinguishing control switches.
7. A vehicle, characterized by comprising: high-voltage system of a vehicle according to any of claims 1-6.
8. The vehicle of claim 7, characterized in that the vehicle is an electric automobile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921750546.3U CN211075542U (en) | 2019-10-17 | 2019-10-17 | High-voltage system of vehicle and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921750546.3U CN211075542U (en) | 2019-10-17 | 2019-10-17 | High-voltage system of vehicle and vehicle |
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| Publication Number | Publication Date |
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| CN211075542U true CN211075542U (en) | 2020-07-24 |
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| CN201921750546.3U Active CN211075542U (en) | 2019-10-17 | 2019-10-17 | High-voltage system of vehicle and vehicle |
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| CN (1) | CN211075542U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114683877A (en) * | 2020-12-28 | 2022-07-01 | 长城汽车股份有限公司 | Power battery system and vehicle |
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2019
- 2019-10-17 CN CN201921750546.3U patent/CN211075542U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114683877A (en) * | 2020-12-28 | 2022-07-01 | 长城汽车股份有限公司 | Power battery system and vehicle |
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