CN209821326U - New energy automobile high pressure interlocking detection circuitry structure - Google Patents
New energy automobile high pressure interlocking detection circuitry structure Download PDFInfo
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- CN209821326U CN209821326U CN201920358698.2U CN201920358698U CN209821326U CN 209821326 U CN209821326 U CN 209821326U CN 201920358698 U CN201920358698 U CN 201920358698U CN 209821326 U CN209821326 U CN 209821326U
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Abstract
The utility model discloses a new energy automobile high pressure interlocking detection circuitry structure, including high-pressure part, high-pressure interlocking return circuit and voltage detection circuit, high-pressure interlocking return circuit includes series connection's main control unit and a plurality of the control unit, the control unit is connected with the high-pressure part one-to-one, voltage detection circuit includes a plurality of the detecting element of series connection, main control unit and every the control unit all correspond a detecting element, detecting element is used for detecting its point of opening circuit when high-pressure interlocking return circuit opens circuit, every detecting element includes series connection's switch triode and resistance. The utility model relates to a rationally, when high-pressure interlocking circuit disconnection trouble appears, the control unit can judge concrete fault point more accurately to improve diagnosis monitoring ability and maintenance efficiency.
Description
Technical Field
The utility model discloses a new energy automobile high pressure interlocking detection circuitry structure belongs to new energy automobile safety protection field.
Background
The high voltage referred herein refers to a high voltage system of a new energy automobile, and compared with a traditional 12V powered automobile, the voltage of the new energy automobile is generally 300-600V, the new energy automobile relates to a high voltage component above 300V, so the automobile has a high voltage interlock loop, and the control principle is that an interlock loop is arranged at a high voltage related component, such as a high voltage plug, a high voltage component end cover, etc., the interlock loop is a low voltage line, i.e., is powered by a 12V storage battery, when the high voltage plug is disconnected or the high voltage component is opened, the low voltage loop is cut off, so that the high voltage output is quickly cut off by a control unit, but the high voltage interlock loop of the new energy automobile is generally designed to be a pure wire loop, and comprises a main control unit and a plurality of control units which are connected in series, the main control unit and the control unit are an MCU, as shown in fig. 1, the control unit can only know that the circuit is open, but cannot detect the extent of the open circuit.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a new energy automobile high pressure interlocking detection circuitry structure for solving foretell problem.
The utility model discloses a following technical scheme realizes above-mentioned purpose, a new energy automobile high pressure interlocking detection circuitry structure, including high-voltage part, high-pressure interlocking return circuit and voltage detection circuit, high-pressure interlocking return circuit includes series connection's main control unit and a plurality of the control unit, the control unit is connected with the high-voltage part one-to-one, voltage detection circuit includes a plurality of detecting element of series connection, main control unit and every the control unit all correspond a detecting element, detecting element is used for detecting its point of opening circuit when high-pressure interlocking return circuit opens circuit, every detecting element includes series connection's switch triode and resistance.
Preferably, the voltage detection circuit includes parallel connection's first detecting element, second detecting element, third detecting element and fourth detecting element, first detecting element includes first resistance and the first switch triode who establishes ties with first resistance, the second detecting element includes the second resistance parallelly connected with first resistance and the second switch triode who establishes ties with second resistance, the third detecting element includes the third resistance parallelly connected with second resistance and the third switch triode who establishes ties with third resistance, the fourth detecting element includes the fourth resistance parallelly connected with third resistance and the fourth switch triode who establishes ties with fourth resistance.
Preferably, the emitting electrode of the first switch triode is coupled with the output end of the first resistor, the base electrode and the collector electrode of the first switch triode are coupled with the first wiring terminal and the ground, the emitting electrode of the second switch triode is coupled with the output end of the second resistor, the base electrode and the collector electrode of the second switch triode are coupled with the first wiring terminal and the ground, the emitting electrode of the third switch triode is coupled with the output end of the third resistor, the base electrode and the collector electrode of the third switch triode are coupled with the first wiring terminal and the ground, the emitting electrode of the fourth switch triode is coupled with the output end of the fourth resistor, and the base electrode and the collector electrode of the fourth switch triode are coupled with the first wiring terminal and the ground.
Preferably, the first connection terminal is coupled to an internal control line of the main control unit, the first resistor, the second resistor, the third resistor and the fourth resistor are coupled to a second connection terminal, a third connection terminal, a fourth connection terminal and a fifth connection terminal respectively, and the second connection terminal, the third connection terminal, the fourth connection terminal and the fifth connection terminal are coupled to leading-out terminals of the high-voltage interlock loop respectively.
Preferably, the control unit includes a first control unit, a second control unit and a third control unit, and the first detection unit, the second detection unit, the third detection unit and the fourth detection unit are configured to detect whether the main control unit, the first control unit, the second control unit and the third control unit are open-circuited, respectively.
Preferably, when the high-voltage interlock circuit is disconnected at different points, the main control unit judges the specific disconnection point by detecting different voltage changes.
Preferably, the first resistor, the second resistor, the third resistor and the fourth resistor have the same resistance.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model relates to a rationally, when high-pressure interlocking circuit disconnection trouble appears, the control unit can judge concrete fault point more accurately to improve diagnosis monitoring ability and maintenance efficiency.
Drawings
Fig. 1 is a schematic structural diagram of a new energy automobile high-voltage interlocking loop of the present invention;
fig. 2 is the utility model relates to a new energy automobile high pressure interlocking detection circuitry structure's schematic structure.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely 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 work belong to the protection scope of the present invention.
Please refer to fig. 1 and 2, a new energy automobile high-voltage interlock detection circuit structure includes a high-voltage component D, a high-voltage interlock loop and a voltage detection circuit, the high-voltage interlock loop includes a main control unit and a plurality of control units connected in series, the control units are connected in one-to-one correspondence with the high-voltage component D, the voltage detection circuit includes a plurality of detection units connected in series, the main control unit and each control unit correspond to one detection unit, the detection unit is used for detecting a disconnection point of the high-voltage interlock loop when the high-voltage interlock loop is disconnected, and each detection unit includes a switch triode and a resistor connected in series.
The voltage detection circuit comprises a first detection unit, a second detection unit, a third detection unit and a fourth detection unit which are connected in parallel, wherein the first detection unit comprises a first resistor R1 and a first switching triode VT1 connected with the first resistor R1 in series, the second detection unit comprises a second resistor R2 connected with the first resistor R1 in parallel and a second switching triode VT2 connected with the second resistor R2 in series, the third detection unit comprises a third resistor R3 connected with the second resistor R2 in parallel and a third switching triode VT3 connected with the third resistor R3 in series, and the fourth detection unit comprises a fourth resistor R4 connected with the third resistor R3 in parallel and a fourth switching triode VT4 connected with the fourth resistor R4 in series; an emitter E of the first switching transistor VT1 is coupled to an output terminal of the first resistor R1, a base electrode B and a collector C of the first switching transistor VT1 are coupled to the first connection terminal n and the ground connection m, respectively, an emitter E of the second switching transistor VT2 is coupled to an output terminal of the second resistor R2, a base electrode B and a collector C of the second switching transistor VT2 are coupled to the first connection terminal n and the ground connection m, respectively, an emitter E of the third switching transistor VT3 is coupled to an output terminal of the third resistor R3, a base electrode B and a collector C of the third switching transistor VT3 are coupled to the first connection terminal n and the ground connection m, respectively, an emitter E of the fourth switching transistor VT4 is coupled to an output terminal of the fourth resistor R4, and a base electrode B and a collector C of the fourth switching transistor VT4 are coupled to the first connection terminal n and the ground connection m, respectively; the first connection terminal n is coupled to an internal control line of the main control unit and used as a voltage detection circuit, the input ends of the first resistor R1, the second resistor R2, the third resistor R3 and the fourth resistor R4 are respectively coupled with a second connection terminal e, a third connection terminal f, a fourth connection terminal g and a fifth connection terminal h, and the second connection terminal e, the third connection terminal f, the fourth connection terminal g and the fifth connection terminal h are respectively coupled to leading-out terminals of the high-voltage interlocking loop; the control unit comprises a first control unit A, a second control unit B and a third control unit C, and the first detection unit, the second detection unit, the third detection unit and the fourth detection unit are used for respectively detecting whether the main control unit, the first control unit A, the second control unit B and the third control unit C are in open circuit or not.
When the high-voltage interlocking loop is disconnected at different points, the main control unit judges the specific disconnection point by detecting different voltage changes.
The first resistor R1, the second resistor R2, the third resistor R3 and the fourth resistor R4 have the same resistance.
When the high-voltage interlocking circuit is used specifically, after each triode in the voltage detection circuit is conducted, each detection point of the high-voltage interlocking circuit is grounded through the resistor respectively, the high-voltage interlocking circuit is equivalent to a parallel circuit at the moment, the high-voltage interlocking circuit is disconnected at different points, the number of resistors on the parallel circuit is different, therefore, the total resistance on the circuit is different, the main control unit judges a specific breaking point through detecting different voltage changes, the design is reasonable, when the high-voltage interlocking circuit is disconnected, the control unit can judge a specific fault point accurately, and therefore the diagnosis monitoring capacity and the maintenance efficiency are improved.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships 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 being 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.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. The utility model provides a new energy automobile high pressure interlocking detection circuitry structure, characterized by: including high-voltage part, high-pressure interlocking return circuit and voltage detection circuit, high-pressure interlocking return circuit includes series connection's main control unit and a plurality of the control unit, the control unit is connected with high-voltage part one-to-one, voltage detection circuit includes a plurality of detecting element of series connection, main control unit and every detecting element all correspond a detecting element, detecting element is used for detecting its breaking point when high-pressure interlocking return circuit opens circuit, every detecting element includes series connection's switch triode and resistance.
2. The new energy automobile high-voltage interlocking detection circuit structure as claimed in claim 1, wherein: the voltage detection circuit comprises a first detection unit, a second detection unit, a third detection unit and a fourth detection unit which are connected in parallel, the first detection unit comprises a first resistor and a first switch triode connected with the first resistor in series, the second detection unit comprises a second resistor connected with the first resistor in parallel and a second switch triode connected with the second resistor in series, the third detection unit comprises a third resistor connected with the second resistor in parallel and a third switch triode connected with the third resistor in series, and the fourth detection unit comprises a fourth resistor connected with the third resistor in parallel and a fourth switch triode connected with the fourth resistor in series.
3. The new energy automobile high-voltage interlocking detection circuit structure as claimed in claim 2, characterized in that: the emitting electrode of the first switch triode is coupled with the output end of the first resistor, the base electrode and the collector electrode of the first switch triode are coupled with the first wiring terminal and the grounding respectively, the emitting electrode of the second switch triode is coupled with the output end of the second resistor, the base electrode and the collector electrode of the second switch triode are coupled with the first wiring terminal and the grounding respectively, the emitting electrode of the third switch triode is coupled with the output end of the third resistor, the base electrode and the collector electrode of the third switch triode are coupled with the first wiring terminal and the grounding respectively, the emitting electrode of the fourth switch triode is coupled with the output end of the fourth resistor, and the base electrode and the collector electrode of the fourth switch triode are coupled with the first wiring terminal and the grounding respectively.
4. The new energy automobile high-voltage interlocking detection circuit structure as claimed in claim 3, wherein: the first connecting terminal is coupled to an internal control line of the main control unit and used as a voltage detection circuit, the input ends of the first resistor, the second resistor, the third resistor and the fourth resistor are respectively coupled with a second connecting terminal, a third connecting terminal, a fourth connecting terminal and a fifth connecting terminal, and the second connecting terminal, the third connecting terminal, the fourth connecting terminal and the fifth connecting terminal are respectively coupled to leading-out terminals of the high-voltage interlocking loop.
5. The new energy automobile high-voltage interlocking detection circuit structure as claimed in claim 2, characterized in that: the control unit comprises a first control unit, a second control unit and a third control unit, and the first detection unit, the second detection unit, the third detection unit and the fourth detection unit are used for respectively detecting whether the main control unit, the first control unit, the second control unit and the third control unit are in open circuit or not.
6. The new energy automobile high-voltage interlocking detection circuit structure as claimed in claim 1, wherein: when the high-voltage interlocking loop is disconnected at different points, the main control unit judges the specific disconnection point by detecting different voltage changes.
7. The new energy automobile high-voltage interlocking detection circuit structure as claimed in claim 2, characterized in that: the first resistor, the second resistor, the third resistor and the fourth resistor have the same resistance value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920358698.2U CN209821326U (en) | 2019-03-21 | 2019-03-21 | New energy automobile high pressure interlocking detection circuitry structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920358698.2U CN209821326U (en) | 2019-03-21 | 2019-03-21 | New energy automobile high pressure interlocking detection circuitry structure |
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| CN209821326U true CN209821326U (en) | 2019-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920358698.2U Expired - Fee Related CN209821326U (en) | 2019-03-21 | 2019-03-21 | New energy automobile high pressure interlocking detection circuitry structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111796213A (en) * | 2020-07-10 | 2020-10-20 | 的卢技术有限公司 | Detection circuit and method for electrical loop integrity and breakpoint positioning |
-
2019
- 2019-03-21 CN CN201920358698.2U patent/CN209821326U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111796213A (en) * | 2020-07-10 | 2020-10-20 | 的卢技术有限公司 | Detection circuit and method for electrical loop integrity and breakpoint positioning |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191220 Termination date: 20210321 |