CN212301713U - Electric automobile's heater high pressure interlocking detection circuitry - Google Patents
Electric automobile's heater high pressure interlocking detection circuitry Download PDFInfo
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- CN212301713U CN212301713U CN202020520189.8U CN202020520189U CN212301713U CN 212301713 U CN212301713 U CN 212301713U CN 202020520189 U CN202020520189 U CN 202020520189U CN 212301713 U CN212301713 U CN 212301713U
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- interlocking
- heater
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Abstract
The utility model provides an electric automobile's heater high pressure interlocking detection circuitry, including power supply circuit, voltage display, high pressure to plug-in components, low pressure to the high pressure interlocking circuit module in plug-in components, the heater, high pressure interlocking circuit module includes low pressure interface and high-pressure interface, low pressure interface electricity is connected with first interlocking line and second interlocking line, power supply circuit is connected with first interlocking line through the low pressure to plug-in components, voltage display is connected with second interlocking line through the low pressure to plug-in components, high pressure interface electricity is connected with third interlocking line and fourth interlocking line, the high pressure is equipped with the connecting piece of intercommunication third interlocking line and fourth interlocking line in to the plug-in components, the connecting piece is connected with high pressure interface electricity through third interlocking line and fourth interlocking line. The utility model provides an electric automobile's heater high pressure interlocking detection circuitry can simply detect effectively to the high pressure interlocking circuit module in the heater.
Description
Technical Field
The utility model relates to a heater product detection area especially relates to an electric automobile's heater high pressure interlocking detection circuitry.
Background
The heater belongs to high voltage power supply products on the electric automobile, and the heater must have high voltage interlocking function. The high-voltage interlocking function of the heater directly influences whether a high-voltage power supply system of the whole vehicle works normally.
At present, heater products are more and more applied to electric automobiles, and the heater is taken as an automobile part, particularly a high-voltage part, and is required to be strictly tested in the production test process.
Both of the above reasons require the heater high-pressure interlock function as a necessary test item for heater products. Therefore, a heater high-voltage interlock detection circuit for an electric vehicle is needed to detect the heater.
Disclosure of Invention
An object of the utility model is to overcome prior art's defect, provide an electric automobile's heater high pressure interlocking detection circuitry to solve the demand that present heater high pressure interlocking detected.
The utility model discloses a realize like this:
the utility model provides an electric automobile's heater high pressure interlocking detection circuitry, including power supply circuit, voltage display, high pressure to plug-in components, low pressure to the high pressure interlocking circuit module in plug-in components, the heater, high pressure interlocking circuit module includes low pressure interface and high-pressure interface, low pressure interface electricity is connected with first interlocking line and second interlocking line, power supply circuit is connected with first interlocking line through the low pressure to plug-in components, voltage display is connected with second interlocking line through the low pressure to plug-in components, high pressure interface electricity is connected with third interlocking line and fourth interlocking line, the high pressure is equipped with the connecting piece of intercommunication third interlocking line and fourth interlocking line in to the plug-in components, the connecting piece is connected with high pressure interface electricity through third interlocking line and fourth interlocking line.
Preferably, the power supply circuit comprises a 5V power supply, a first resistor and a second resistor, wherein the 5V power supply is electrically connected with the input end of the second resistor through the first resistor, the output end of the second resistor is grounded, and the input end of the second resistor is electrically connected with the first interlocking wire through a low-voltage plug-in.
Preferably, the voltage display is a voltmeter.
The utility model discloses following beneficial effect has:
the utility model provides an electric automobile's heater high pressure interlocking detection circuitry can simply detect effectively to the high pressure interlocking circuit module in the heater, guarantees heater product in use's security, and then can improve electric automobile's performance and life.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of a power circuit provided in an embodiment of the present invention;
fig. 2 is a schematic diagram of a high-voltage interlock detection circuit of a heater according to an embodiment of the present invention;
fig. 3 is an internal circuit diagram of a high-voltage interlock circuit module according to an embodiment of the present invention.
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 efforts belong to the protection scope of the present invention.
Referring to fig. 1-3, an embodiment of the present invention provides a high-voltage interlock detection circuit for a heater of an electric vehicle, including a power circuit 100, a voltage display, a high-voltage pair plug-in unit 105, a low-voltage pair plug-in unit 101, and a high-voltage interlock circuit module 103 in the heater 109, in this embodiment, the voltage display is a voltmeter 108, the high-voltage interlock circuit module 103 includes a low-voltage interface and a high-voltage interface, the low voltage interface is electrically connected with a first interlock wire 102 and a second interlock wire 107, the power circuit 100 is electrically connected with the first interlock wire 102 through a low voltage pair plug 101, the voltmeter 108 is electrically connected with the second interlocking line 107 through the low voltage pair connector 101, the high-voltage interface is electrically connected with a third interlocking wire 104 and a fourth interlocking wire 106, a connecting piece communicated with the third interlocking wire 104 and the fourth interlocking wire 106 is arranged in the high-voltage pair plug-in piece 105, the connector is electrically connected to the high voltage interface by a third interlock line 104 and a fourth interlock line 106. The utility model provides an electric automobile's heater high pressure interlocking detection circuitry can simply detect effectively to the high pressure interlocking circuit module in the heater, guarantees heater product in use's security, and then can improve electric automobile's performance and life.
The power supply circuit comprises a 5V power supply, a first resistor R1 and a second resistor R2, wherein the 5V power supply is electrically connected with the input end of the second resistor R2 through a first resistor R1, the output end of the second resistor R2 is grounded, and the input end of the second resistor R2 is electrically connected with the first interlocking wire 102 through a low-voltage pair plug-in unit 101.
The utility model discloses constitute by power supply circuit 100, low pressure to plug-in components 101, high pressure to plug-in components 105 and voltmeter 108, wherein, high pressure interlocking circuit module 103 and first interlocking line 102, third interlocking line 104, fourth interlocking line 106, second interlocking line 107 are the part that is detected, also belong to a part of heater product simultaneously.
Referring to fig. 1, in the high-voltage interlock input signal circuit according to the embodiment of the present invention, a dc power source with a first resistor R1, a second resistor R2, and 5V is disposed on a power circuit 100 to generate the high-voltage interlock input signal circuit.
Referring to fig. 2, an embodiment of the invention provides a high-voltage interlock detection circuit, which includes a power circuit 100, a low-voltage pair plug 101, a high-voltage pair plug 105, and a voltmeter 108. The high voltage plug-in 105 is plugged into the high voltage interface of the heater 109, so that the third interlock line 104 and the fourth interlock line 106 are conducted to form a loop. The low voltage pair insert 101 is connected to a first interlock wire 102 and a second interlock wire 107.
In the detection circuit, a high-voltage plug-in unit 105 is plugged in a high-voltage interface of the heater, so that the third interlocking line 104 and the fourth interlocking line 106 are conducted to form a loop, and thus the high-voltage interlocking of the heater realizes an interlocking state. The low voltage pair insert 101 is connected to the heater, connecting with the first interlock wire 102 and the second interlock wire 107.
A power supply circuit consisting of a first resistor R1, a second resistor R2 and a 5V direct-current power supply generates an interlocking input signal; the interlock input signal is transmitted to the first interlock line 102 through the low voltage pair plug-in 101, and the high voltage interlock circuit module 103 transmits the interlock signal to the third interlock line 104, the high voltage pair plug-in 105 and the fourth interlock line 106 in sequence, and then loops to the high voltage interlock circuit module 103. The high-voltage interlock circuit module 103 outputs an interlock signal to the second interlock line 107, and finally, to the voltmeter 108.
The voltmeter 108 receives the interlock signal, detects the interlock signal, and when the interlock signal voltage U is 5 × R2/(R1+ R2), the detected heater high-voltage interlock is considered to be normal, so as to achieve the purpose of detecting the heater high-voltage interlock.
Under the condition that the high-voltage interlocking function of the heater is normal, the interlocking signal voltage theoretical value detected by the voltmeter 108 is as follows:
U＝5*R2/(R1+R2) (1)
in the formula (1), U is the voltage value of the interlock output signal, 5 is the dc power voltage, R1 is the resistance value of the first resistor R1, and R2 is the resistance value of the second resistor R2.
When the voltage value detected by the voltmeter 108 is equal to the value calculated by the formula (1), the heater high-voltage interlock circuit is qualified.
When the voltage value detected by the voltmeter 108 is not equal to the value calculated by the formula (1), the heater high-voltage interlock circuit is determined to be unqualified.
In the present embodiment, a schematic diagram of the high-voltage interlock circuit module 103 is shown in fig. 3, and the circuit is a high-voltage interlock multiplexing circuit composed of a line Net1, a line Net2, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a diode D1, and a transistor Q1. A line Net1 connects the second interlock line 107 and the fourth interlock line 106, and a line Net2 connects the first interlock line 102 and the third interlock line 104.
There are two use cases for the high voltage interlock multiplexing circuit: one is that the resistor R6 is 0 ohms, and the other is that when the resistor R6 is not attached, the line Net1 is completely isolated from other circuits in the high voltage interlock circuit module. The utility model discloses a high pressure interlocking detection circuitry to second kind of in service behavior, under second kind of in service behavior, in the high pressure interlocking circuit module 103 of the heater of selling on the market, there is resistance R6 in fig. 3 some, resistance R7, resistance R8, resistance R9, the circuit that diode D1 and triode Q1 are constituteed, do not exist this part of circuit, fig. 3 is for example with the high pressure interlocking circuit module that exists this part of circuit, when the high pressure interlocking circuit of heater detects qualifiedly, it is in not the paster state to explain resistance R6, other circuits in circuit Net1 and the high pressure interlocking circuit module 103 are kept apart completely (NC in fig. 3 represents contactless), namely circuit Net1 and diode D1 do not connect with each other, this high pressure interlocking multiplexing circuit specific use principle is prior art, no longer repeated here.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. The utility model provides an electric automobile's heater high pressure interlock detection circuit which characterized in that: including power supply circuit, voltage display, high pressure to plug-in components, low pressure to the high-pressure interlocking circuit module in plug-in components, the heater, high-pressure interlocking circuit module includes low pressure interface and high-pressure interface, low pressure interface electricity is connected with first interlocking line and second interlocking line, power supply circuit is connected with first interlocking line through the low pressure to plug-in components, voltage display is connected with second interlocking line through low pressure to plug-in components, high pressure interface electricity is connected with third interlocking line and fourth interlocking line, the high pressure is equipped with the connecting piece of intercommunication third interlocking line and fourth interlocking line in to the plug-in components.
2. The heater high-voltage interlock detection circuit for an electric vehicle according to claim 1, characterized in that: the power supply circuit comprises a 5V power supply, a first resistor and a second resistor, wherein the 5V power supply is electrically connected with the input end of the second resistor through the first resistor, the output end of the second resistor is grounded, and the input end of the second resistor is electrically connected with the first interlocking wire through a low-voltage pair plug-in unit.
3. The heater high-voltage interlock detection circuit for an electric vehicle according to claim 1, characterized in that: the voltage display is a voltmeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020520189.8U CN212301713U (en) | 2020-04-10 | 2020-04-10 | Electric automobile's heater high pressure interlocking detection circuitry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020520189.8U CN212301713U (en) | 2020-04-10 | 2020-04-10 | Electric automobile's heater high pressure interlocking detection circuitry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212301713U true CN212301713U (en) | 2021-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020520189.8U Active CN212301713U (en) | 2020-04-10 | 2020-04-10 | Electric automobile's heater high pressure interlocking detection circuitry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212301713U (en) |
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2020
- 2020-04-10 CN CN202020520189.8U patent/CN212301713U/en active Active
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