CN214795033U - Uncovering detection circuit and uncovering detection device - Google Patents
Uncovering detection circuit and uncovering detection device Download PDFInfo
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- CN214795033U CN214795033U CN202120248843.9U CN202120248843U CN214795033U CN 214795033 U CN214795033 U CN 214795033U CN 202120248843 U CN202120248843 U CN 202120248843U CN 214795033 U CN214795033 U CN 214795033U
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Abstract
The utility model discloses a cover opening detection circuit and a cover opening detection device, which comprise a detection signal input end, a signal generation module, a signal induction module and a detection signal output end; the signal generation module is arranged in a cover plate of the high-voltage component and forms a preset signal in a preset area; the signal induction module is respectively electrically connected with the detection signal input end and the detection signal output end, and the signal induction module is used for electrically connecting the detection signal input end and the detection signal output end when detecting the preset signal. The utility model discloses detection circuitry uncaps has following beneficial effect at least: the utility model discloses an utilize signal induction module of non-contact, like the magnetic resistance switch device, through adopting ordinary, the lower electronic components of cost, realize uncapping detection circuit's non-contact detection, have advantages such as with low costs, reliability height.
Description
Technical Field
The utility model belongs to the technical field of new energy automobile and specifically relates to a detection circuitry and detection device uncaps.
Background
At present, a new energy automobile uses a high-voltage battery as a power source, but the use of the high-voltage battery can have certain safety risks. In order to ensure the application safety of high voltage electricity, the high voltage part needs to be uncovered for detection in the links of use, maintenance and the like of vehicles.
The existing cover opening detection scheme generally uses a cover opening interlocking terminal on a cover plate of a high-voltage component, and a whole vehicle control system judges whether the cover plate is opened or not by detecting the connection state of the cover opening interlocking terminal. As shown in fig. 1, the figure includes a door opening interlock terminal K1, an input wire, and an output wire. The whole vehicle control system sends an input detection signal LOCK-DI to the high-voltage component, and the input detection signal LOCK-DI feeds back an output detection signal to the normal control system after passing through the uncovering interlocking terminal K1. The cover opening interlocking terminal K1 is installed in the high-voltage component cover plate, when the cover plate is in a cover tight state, the port of the cover opening interlocking terminal K1 is conducted, the LOCK-DI signal enters the port and is transmitted to the detection signal output end LOCK-DO, and the vehicle control system judges the state of the cover plate by detecting and comparing the change of the LOCK-DI signal and the detection signal output end LOCK-DO signal.
However, in the existing uncapping interlocking terminal scheme, because the connection between the lead and the port in the uncapping interlocking terminal is unstable, under severe conditions such as high-frequency vibration of an automobile, high ambient temperature circulation and the like, the uncapping interlocking terminal is easy to have the problems of fretting wear, port needle withdrawing and the like, so that the failure rate is high and the reliability is low; and in order to guarantee safety, all components and parts in the uncovering interlocking terminal are of an automobile grade, so that the production cost is high.
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. Therefore, the utility model provides a detection circuitry uncaps can improve detection circuitry's reliability and reduction in production cost.
In a first aspect, an embodiment of the present invention provides a decap detection circuit, including a detection signal input terminal, a signal generation module, a signal sensing module, and a detection signal output terminal; the signal generation module is arranged in a cover plate of the high-voltage component and forms a preset signal in a preset area; the signal induction module is respectively electrically connected with the detection signal input end and the detection signal output end, and the signal induction module is used for electrically connecting the detection signal input end and the detection signal output end when detecting the preset signal.
The utility model discloses detection circuitry uncaps has following beneficial effect at least: the utility model discloses an utilize signal induction module of non-contact, like the magnetic resistance switch device, through adopting ordinary, the lower electronic components of cost, realize uncapping detection circuit's non-contact detection, have advantages such as with low costs, reliability height.
Further, the signal generation module comprises a magnetic element, the preset signal is a magnetic field signal, and the signal induction module comprises a magnetic induction chip and a first signal processing module;
the magnetic induction chip comprises an input terminal pin, an output terminal pin and a grounding terminal pin; the input terminal pin of the magnetic induction chip and the first input end of the first signal processing module are respectively and electrically connected with the detection signal input end, the output terminal pin of the magnetic induction chip is electrically connected with the control end of the signal processing module, and the grounding terminal pin of the magnetic induction chip and the second input end of the first signal processing module are respectively connected with a reference ground; the output end of the first signal processing module is electrically connected with the detection signal input end, and the magnetic induction chip outputs signals enabling the first signal processing module to be electrically connected with the detection signal input end and the detection signal output end when detecting the preset signals.
Further, the first signal processing module comprises a first switch tube and a second switch tube, and the conduction conditions of the first switch tube and the second switch tube are opposite;
first switch tube and second switch tube series connection are in between detection signal input end and the reference ground, the tie point of first switch tube and second switch tube with detection signal output electric connection, the control end of first switch tube and second switch respectively with magnetic induction chip's output end foot electric connection, just magnetic induction chip is sensing output the signal that makes first switch tube switch on, second switch tube disconnection during the preset signal, magnetic induction chip is not sensing output the signal that makes first switch tube disconnection, second switch tube switch on during the preset signal.
According to the uncapping detection circuit of other embodiments of the present invention, the signal generation module includes a magnetic element, the preset signal is a magnetic field signal, and the signal induction module includes a magnetic induction chip;
the magnetic induction chip comprises an input terminal pin, an output terminal pin and a grounding terminal pin; wherein, the input terminal pin of magnetic induction chip with detect signal input electric connection, the output terminal pin of magnetic induction chip with detect signal output electric connection, the ground connection terminal pin of magnetic induction chip is connected with the ground of reference, just the magnetic induction chip is detecting during the preset signal to detect signal output with detect the same signal of signal input.
Furthermore, the magnetic induction chip is integrated with a logic processing unit, a third switching tube and a fourth switching tube, and the conduction conditions of the third switching tube and the fourth switching tube are opposite;
third switch tube and fourth switch tube series connection be in between input end foot and the ground connection end foot, the junction point of third switch tube and fourth switch tube with output end foot electric connection, the control end of third switch tube and fourth switch respectively with logic processing unit electric connection, just logic processing unit is sensing output the signal that makes third switch tube switch on, fourth switch tube disconnection during predetermineeing the signal, the magnetic induction chip is not sensing output the signal that makes third switch tube disconnection, fourth switch tube switch on during predetermineeing the signal.
According to other embodiments of the present invention, the cover opening detection circuit further comprises a first resistor and a fifth switch tube; the first resistor and the fifth switch tube are connected in series between the detection signal input end and the reference ground, the connection point of the first resistor and the fifth switch tube is electrically connected with the detection signal output end, the control end of the fifth switch tube is electrically connected with the output end pin of the magnetic induction chip, the magnetic induction chip senses the signal for disconnecting the fifth switch tube when the preset signal is output, and the magnetic induction chip does not sense the signal for connecting the fifth switch tube when the preset signal is output.
According to the uncapping detection circuit of the other embodiments of the present invention, the uncapping detection circuit includes a sixth switching tube and a seventh switching tube, and the conduction conditions of the sixth switching tube and the seventh switching tube are opposite;
the sixth switch tube and the seventh switch tube are connected in series between the detection signal input end and the reference ground, the connection point of the sixth switch tube and the seventh switch tube is electrically connected with the detection signal output end, the control ends of the sixth switch tube and the seventh switch are respectively electrically connected with the output end pin of the magnetic induction chip, the magnetic induction chip senses the preset signal and outputs signals for switching off the seventh switch tube and switching on the sixth switch tube, and the magnetic induction chip does not sense the preset signal and outputs signals for switching on the seventh switch tube and switching off the sixth switch tube.
According to the uncapping detection circuit of other embodiments of the present invention, the signal generating module includes a magnetic element, the predetermined signal is a magnetic field signal, and the signal sensing module includes a magnetic induction chip and a second signal processing module;
the magnetic induction chip comprises an input terminal pin, an output terminal pin and a grounding terminal pin; the second signal processing module comprises a second resistor, an eighth switching tube and a ninth switching tube;
the input terminal pin of the magnetic induction chip is electrically connected with an external power supply, the grounding terminal pin of the magnetic induction chip is connected with a reference ground, and the second resistor and the eighth switch tube are connected in series between the external power supply and the reference ground; the control end of the eighth switching tube is electrically connected with the detection signal input end; the ninth switch tube is connected in series between the output terminal pin of the magnetic induction chip and the detection signal output end, and the control end of the ninth switch tube is electrically connected with an external power supply through the second resistor.
In a second aspect, an embodiment of the present invention provides an uncovering detection device, including n uncovering detection circuits as described above, where n is a positive integer greater than 1; the n signal generation modules are respectively installed in cover plates of the plurality of high-voltage components, and a detection signal input end of the nth uncovering detection circuit is electrically connected with a detection signal output end of the (n-1) th uncovering detection circuit.
The utility model discloses detection device uncaps has following beneficial effect at least: the utility model discloses a cascade the detection with a plurality of detection circuitry that uncaps to utilize non-contact's signal induction module, like the magnetic resistance switch device, through adopting ordinary, the lower electronic components of cost, realize uncapping detection circuitry's non-contact detection, have advantages such as with low costs, reliability height.
According to other embodiments of the present invention, the uncapping detection device further comprises an uncapping interlock circuit connected in series with the uncapping detection circuit; the interlock terminal of the lid opening interlock circuit is mounted in the lid plate of the high-voltage part.
Drawings
FIG. 1 is a circuit schematic of a prior art decap detection circuit;
fig. 2 is a schematic circuit diagram of an embodiment of a decap detection circuit according to an embodiment of the present invention;
fig. 3 is a schematic circuit diagram illustrating another embodiment of a decap detection circuit according to an embodiment of the present invention;
fig. 4 is a schematic circuit diagram illustrating another embodiment of a decap detection circuit according to an embodiment of the present invention;
fig. 5 is a schematic circuit diagram illustrating another embodiment of a decap detection circuit according to an embodiment of the present invention;
fig. 6 is a schematic circuit diagram illustrating another embodiment of a decap detection circuit according to an embodiment of the present invention;
fig. 7 is a schematic circuit diagram illustrating another embodiment of a decap detection circuit according to an embodiment of the present invention;
fig. 8 is a schematic specific circuit diagram of an embodiment of the uncap detection apparatus according to the embodiment of the present invention;
fig. 9 is a schematic circuit diagram of another embodiment of the uncap detection apparatus according to the embodiment of the present invention.
Detailed Description
The conception and the resulting technical effects of the present invention will be described clearly and completely with reference to the following embodiments, so that the objects, features and effects of the present invention can be fully understood. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention.
In the description of the present invention, if an orientation description is referred to, for example, the directions or positional relationships indicated by "upper", "lower", "front", "rear", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, only for convenience of description and simplification of description, and it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. If a feature is referred to as being "disposed," "secured," "connected," or "mounted" to another feature, it can be directly disposed, secured, or connected to the other feature or indirectly disposed, secured, connected, or mounted to the other feature.
In the description of the embodiments of the present invention, if "a plurality" is referred to, it means one or more, if "a plurality" is referred to, it means two or more, if "greater than", "less than" or "more than" is referred to, it is understood that the number is not included, and if "more than", "less than" or "within" is referred to, it is understood that the number is included. If reference is made to "first" or "second", this should be understood to distinguish between features and not to indicate or imply relative importance or to implicitly indicate the number of indicated features or to implicitly indicate the precedence of the indicated features.
In order to reduce production cost and improve the reliability, the utility model provides a detection circuitry uncaps specifically includes detection signal input part, signal generation module, signal response module and detection signal output. The signal generating module is arranged in a cover plate of the high-voltage component and forms a preset signal in a preset area; the signal induction module is electrically connected with the detection signal input end and the detection signal output end respectively, and the signal induction module is used for electrically connecting the detection signal input end with the detection signal output end when a preset signal is detected.
The utility model discloses a detection circuitry uncaps receives the preset signal that signal generation module sent under the condition of contactless signal generation module through sensing element (being signal response module promptly). When the cover is opened, a level signal is input at the detection signal input port, the signal induction module outputs a corresponding preset signal according to the input level signal and the cover plate state, and then the cover tight and loose state of the cover plate of the high-voltage component is judged by judging the change of the level signals of the detection signal input end and the detection signal output end. The utility model discloses detection scheme passing signal generation module and signal response module have realized non-contact and have detected, and electronic device is not fragile under the condition of contactless, consequently the utility model discloses a detection circuitry that uncaps has the advantage that the reliability is high, anti-vibration can the reinforce.
Referring to fig. 2, fig. 2 is a schematic circuit diagram of an embodiment of the present invention. As shown in fig. 2, the signal generating module of this embodiment includes a magnetic element, the magnetic element of the embodiment of the present invention adopts a magnet T1, that is, the predetermined signal sent by the magnet T1 is a magnetic field signal, and the signal sensing module includes a magnetic induction chip U1 and a first signal processing module 10. Of course, in practical applications, other non-contact triggering elements may be used for the signal generating module and the signal sensing module.
The magnetic induction chip U1 includes an input pin VCC, an output pin VOUT, and a ground pin GND. As shown in fig. 2, an input pin VCC of the magnetic induction chip U1 and a first input terminal of the first signal processing module 10 are electrically connected to the detection signal input terminal LOCK _ DI, an output pin VOUT of the magnetic induction chip U1 is electrically connected to a control terminal of the first signal processing module 10, and a ground pin GND of the magnetic induction chip U1 and a second input terminal of the first signal processing module 10 are connected to a reference ground, respectively; the output end of the first signal processing module 10 is electrically connected to the detection signal output end LOCK-DO, and the magnetic induction chip U1 outputs a signal for electrically connecting the first signal processing module 10 to the detection signal input end LOCK _ DI and the detection signal output end LOCK-DO when detecting the preset signal.
The first signal processing module 10 of the embodiment of the present invention is composed of a common switch tube, referring to fig. 2, the first signal processing module 10 includes a first switch tube Q1 and a second switch tube Q2, and the conduction conditions of the first switch tube Q1 and the second switch tube Q2 are opposite.
The first switch tube Q1 and the second switch tube Q2 are connected in series between the detection signal input terminal LOCK _ DI and the reference ground, specifically, the input terminal of the first switch tube Q1 is connected with the detection signal input terminal LOCK _ DI, and the output terminal of the second switch tube Q2 is connected with the reference ground; the output end of the first switch tube Q1 is connected with the input end of the second switch tube, and the connection point of the first switch tube Q1 and the second switch tube Q2 is electrically connected with the detection signal output end LOCK-DO; the control ends of the first switch tube Q1 and the second switch are respectively electrically connected with the output end pin VOUT of the magnetic induction chip U1, and the magnetic induction chip U1 outputs a signal for turning on the first switch tube Q1 and turning off the second switch tube Q2 when sensing a preset signal, and the magnetic induction chip U1 outputs a signal for turning off the first switch tube Q1 and turning on the second switch tube Q2 when not sensing the preset signal.
In this embodiment, a magnetic resistance switch device (e.g., a magnetic induction chip U1) is used for the decap detection, and the first switch Q1 and the second switch Q2 of the first signal processing module form a bipolar output loop. The following describes in detail a specific implementation process of the decap detection circuit according to this embodiment with reference to fig. 2:
in the first state, when the cover of the high-voltage component is closed (i.e., the magnet T1 is close to the magnetic sensor chip U1), the magnetic sensor chip U1 can receive the magnetic field signal of the magnet T1. When a high level signal is input at the detection signal input end LOCK-DI, the magnetic induction chip U1 senses a magnetic field signal of the magnet T1, the output end pin VOUT outputs a low level, the first switch tube Q1 is conducted at the moment, and the detection signal output end LOCK-DO outputs a high level; when the detection signal input end LOCK-DI outputs a low level signal, the magnetic induction chip U1 has no power supply voltage, and the detection signal output end LOCK-DO outputs a low level at this time. That is, when the cover plate is tightly covered, the output signal of the LOCK-DO output terminal can be changed along with the change of the input signal of the LOCK-DI input terminal.
In the second state, when the cover is removed, i.e., the magnet T1 is far away from the magnetic induction chip U1, the magnetic induction chip U1 cannot receive the magnetic field signal of the magnet T1. When the signal input by the detection signal input end LOCK-DI is at a high level, the magnetic induction chip U1 cannot sense a magnetic field, the output terminal pin VOUT outputs a high level, the second switch tube Q2 is turned on, and the detection signal output end LOCK-DO outputs a low level. When the detection signal input end LOCK-DI is at a low level, the magnetic induction chip U1 has no power supply voltage, the magnetic induction chip U1 does not work, and the detection signal output end LOCK-DO outputs a low level at the moment. Namely, when the cover plate is detached, the detection signal output end LOCK-DO always outputs low level and can not change along with the change of the input signal of the detection signal input end LOCK-DI.
The utility model discloses a when detection circuitry that uncaps uses in whole car system, whole car just can judge the lid of apron tightly and loosen the state through the signal change of listening detection signal input end LOCK-DI and detection signal output end LOCK-DO. Just the utility model discloses a switch detection circuitry has adopted simple electronic components, and not only low in manufacturing cost, the reliability is high moreover, and the vibration resistance is strong.
Referring to fig. 3, fig. 3 is another embodiment of the present invention, in which the signal generating module includes a magnet T1, the predetermined signal is a magnetic field signal, and the signal sensing module includes a magnetic induction chip U1.
In the present embodiment, the signal processing circuit is integrated into the magnetic induction chip U1, and specifically, as shown in fig. 3, the magnetic induction chip U1 includes an input pin VCC, an output pin VOUT, and a ground pin GND. The input pin VCC of the magnetic induction chip U1 is electrically connected with the detection signal input terminal LOCK _ DI, the output pin VOUT of the magnetic induction chip U1 is electrically connected with the detection signal output terminal LOCK-DO, the ground pin GND of the magnetic induction chip U1 is connected with the reference ground, and the magnetic induction chip U1 outputs a signal which is the same as the detection signal input terminal LOCK _ DI to the detection signal output terminal LOCK-DO when detecting a preset signal.
The magnetic induction chip U1 of the present embodiment is integrated with a LOGIC processing unit LOGIC, a third switch Q3 and a fourth switch Q4, and the conduction conditions of the third switch Q3 and the fourth switch Q4 are opposite.
Specifically, the third switch tube Q3 and the fourth switch tube Q4 are connected in series between an input terminal VCC and a ground terminal GND of the magnetic induction chip U1, a connection point of the third switch tube Q3 and the fourth switch tube Q4 is electrically connected to the input terminal VCC of the magnetic induction chip U1, control terminals of the third switch tube Q3 and the fourth switch are respectively electrically connected to an output terminal of the logic processing unit, the logic processing unit outputs a signal for turning on the third switch tube Q3 and turning off the fourth switch tube Q4 when a preset signal is sensed, and the logic processing unit outputs a signal for turning off the third switch tube Q3 and turning on the fourth switch tube Q4 when the preset signal is not sensed.
The embodiment and the uncapping detection circuit in the embodiment corresponding to fig. 2 belong to the same concept, the specific circuit implementation process may refer to the description content of the embodiment corresponding to fig. 2, and detailed analysis of the circuit is not repeated here.
Referring to fig. 4, fig. 4 is a cover opening detection circuit according to another embodiment of the present invention, and the cover opening detection circuit according to this embodiment further includes a first resistor R1 and a fifth switch Q5. The first resistor R1 and the fifth switch tube Q5 are connected in series between the detection signal input terminal LOCK _ DI and the reference ground, the connection point of the first resistor R1 and the fifth switch tube Q5 is electrically connected to the detection signal output terminal LOCK-DO, the control terminal of the fifth switch tube Q5 is electrically connected to the output terminal pin VOUT of the magnetic induction chip U1, the magnetic induction chip U1 outputs a signal for disconnecting the fifth switch tube Q5 when sensing a preset signal, and the magnetic induction chip U1 outputs a signal for connecting the fifth switch tube Q5 when not sensing the preset signal.
The embodiment and the uncapping detection circuit in the embodiment corresponding to fig. 2 belong to the same concept, and the specific circuit implementation process thereof may be analyzed in detail with reference to the description content of the embodiment corresponding to fig. 2, which is not described herein again.
Referring to fig. 5, fig. 5 is a cover opening detection circuit according to another embodiment of the present invention, the cover opening detection circuit according to this embodiment further includes a sixth switch tube Q6 and a seventh switch tube Q7, and the conduction conditions of the sixth switch tube Q6 and the seventh switch tube Q7 are opposite.
The sixth switch tube Q6 and the seventh switch tube Q7 are connected in series between a detection signal input terminal LOCK _ DI and a reference ground, a connection point of the sixth switch tube Q6 and the seventh switch tube Q7 is electrically connected with a detection signal output terminal LOCK-DO, control terminals of the sixth switch tube Q6 and the seventh switch tube Q7 are respectively electrically connected with an output terminal pin VOUT of the magnetic induction chip U1, the magnetic induction chip U1 outputs signals for turning off the seventh switch tube Q7 and turning on the sixth switch tube Q6 when a preset signal is sensed, and the magnetic induction chip U1 outputs signals for turning on the seventh switch tube Q7 and turning off the sixth switch tube Q6 when the preset signal is not sensed.
The embodiment of the present invention is the same as the decap detection circuit in the embodiment corresponding to fig. 2, and the specific circuit implementation process thereof may be analyzed with reference to the analysis process in the embodiment corresponding to fig. 2 in detail, which is not described herein again.
Referring to fig. 6, fig. 6 is a cover opening detection circuit according to another embodiment of the present invention, the signal generating module of this embodiment includes a magnet T1, the preset signal is a magnetic field signal, the signal sensing module includes a magnetic induction chip U1 and a second signal processing module 20, the magnetic induction chip U1 of this embodiment can adopt the magnetic induction chip in the corresponding embodiment of fig. 2-5, and the description of the magnetic induction chip U1 is not repeated here.
The magnetic induction chip U1 comprises an input terminal pin VCC, an output terminal pin VOUT and a grounding terminal pin GND; the second signal processing module 20 includes a second resistor R2, an eighth switch Q8, and a ninth switch Q9.
An input pin VCC of the magnetic induction chip U1 of the present embodiment is electrically connected to an external power supply, a ground pin GND of the magnetic induction chip U1 is connected to a ground reference, and the second resistor R2 and the eighth switch Q8 are connected in series between the external power supply and the ground reference; the control end of the eighth switch tube Q8 is electrically connected to the detection signal input end LOCK _ DI; the ninth switch tube Q9 is connected in series between the output terminal pin VOUT of the magnetic induction chip U1 and the detection signal output terminal LOCK-DO, and the control terminal of the ninth switch tube Q9 is electrically connected to the external power source through the second resistor R2.
The uncapping detection circuit in this embodiment is the same as that in the embodiment corresponding to fig. 2, and the specific circuit implementation process thereof may be analyzed with reference to the corresponding description in detail, which is not described herein again.
Because the system applied to the switch detection circuit generally has a plurality of high-voltage components, and a plurality of or all high-voltage components need to be detected when the cover opening detection is carried out, the utility model discloses a cover opening detection device is also provided, the cover opening detection device of the utility model comprises n cover opening detection circuits in the embodiments corresponding to the above-mentioned figures 2-6, wherein n is a positive integer greater than 1; the n signal generation modules are respectively installed in cover plates of the plurality of high-voltage components, and a detection signal input end LOCK _ DI of the nth uncovering detection circuit is electrically connected with a detection signal output end LOCK-DO of the (n-1) th uncovering detection circuit.
Specifically, as shown in fig. 7 and 8, the open cover detection device in the embodiment of fig. 7 includes n open cover detection circuits in the embodiment corresponding to fig. 2 (the open cover detection device in the embodiment of fig. 8 includes n open cover detection circuits in the embodiment corresponding to fig. 6), and the n open cover detection circuits are cascaded. As shown in fig. 7 and 8, n magnets (T1, T2, … … and Tn) are respectively installed in the covers of the plurality of high-voltage components, and the detection signal input terminal of the first open cover detection circuit is used as the detection signal input terminal LOCK _ DI of the open cover detection device of the present embodiment; and the detection signal output end of the nth uncovering detection circuit is used as the detection signal output end LOCK-DO of the uncovering detection device, and then the detection signal input end of the nth uncovering detection circuit is electrically connected with the detection signal output end of the (n-1) th uncovering detection circuit, so that n switch detection circuits are cascaded, and the covering and loosening states of cover plates of a plurality of high-voltage components can be detected.
The circuit implementation process of each uncovering detection circuit in the uncovering detection device of the embodiment can refer to the above embodiment, namely, the signal of the detection signal input terminal LOCK-DI is input to the U1, the T1, the U1, the Q1 and the Q1-2 form the first uncovering detection circuit and output DO1, and according to the analysis of FIG. 2, the DO1 can change along with the change of the detection signal input terminal LOCK-DI signal. The DO1 signal is output to a second uncovering detection circuit consisting of U2, T2, U2, Q2 and Q2-2, and DO2 is output. DO2 is output to U3 and so on, and finally a signal is output from the detection signal output terminal LOCK-DO. The whole vehicle judges the covering and loosening states of the cover plate of each high-voltage component by detecting the signal changes of the detection signal input end and the detection signal output end of each uncovering detection circuit.
In another embodiment of the present invention, the uncapping detection device further comprises an uncapping interlock circuit connected in series with the n uncapping detection circuits; the interlock terminal of the lid opening interlock circuit is mounted in the lid plate of the high-voltage part. The detection device that uncaps of this embodiment can with the utility model discloses an uncap detection circuitry and current detection scheme (uncap interlock circuit) establish ties and use. Referring specifically to fig. 9, fig. 9 includes a two-stage cover opening detection circuit, the first stage is the cover opening interlock terminal K1 of fig. 1, and the second stage is the cover opening detection circuit of fig. 2 (magnet T1, magnetic induction chip U1, first switch tube Q1, second switch tube Q2). The first terminal 30 of the uncovering interlock terminal K1 is connected with the detection signal input terminal LOCK-DI, the second terminal 40 of the uncovering interlock terminal K1 is connected with the input terminal of the uncovering detection circuit, and the output terminal of the uncovering detection circuit (i.e. the connection point of the first switch tube Q1 and the second switch tube Q2) is connected with the detection signal output terminal LOCK-DO.
The circuit implementation process in the decap detection apparatus of this embodiment refers to the background art section and the above embodiment of fig. 2, and is not described again here.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. Furthermore, the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.
Claims (10)
1. A cover opening detection circuit is characterized by comprising a detection signal input end, a signal generation module, a signal induction module and a detection signal output end; the signal generation module is arranged in a cover plate of the high-voltage component and forms a preset signal in a preset area; the signal induction module is respectively electrically connected with the detection signal input end and the detection signal output end, and the signal induction module is used for electrically connecting the detection signal input end and the detection signal output end when detecting the preset signal.
2. The uncovering detection circuit according to claim 1, wherein the signal generation module comprises a magnetic element, the preset signal is a magnetic field signal, and the signal induction module comprises a magnetic induction chip and a first signal processing module;
the magnetic induction chip comprises an input terminal pin, an output terminal pin and a grounding terminal pin; the input terminal pin of the magnetic induction chip and the first input end of the first signal processing module are respectively electrically connected with the detection signal input end; the output terminal pin of the magnetic induction chip is electrically connected with the control terminal of the first signal processing module; the grounding terminal pin of the magnetic induction chip and the second input end of the first signal processing module are respectively connected with a reference ground; the output end of the first signal processing module is electrically connected with the detection signal output end, and the magnetic induction chip outputs signals enabling the first signal processing module to be electrically connected with the detection signal input end and the detection signal output end when detecting the preset signals.
3. The uncovering detection circuit according to claim 2, wherein the first signal processing module comprises a first switch tube and a second switch tube, and the conduction conditions of the first switch tube and the second switch tube are opposite;
first switch tube and second switch tube series connection are in between detection signal input end and the reference ground, the tie point of first switch tube and second switch tube with detection signal output electric connection, the control end of first switch tube and second switch respectively with magnetic induction chip's output end foot electric connection, just magnetic induction chip is sensing output the signal that makes first switch tube switch on, second switch tube disconnection during the preset signal, magnetic induction chip is not sensing output the signal that makes first switch tube disconnection, second switch tube switch on during the preset signal.
4. The uncovering detection circuit according to claim 1, wherein the signal generation module comprises a magnetic element, the preset signal is a magnetic field signal, and the signal induction module comprises a magnetic induction chip;
the magnetic induction chip comprises an input terminal pin, an output terminal pin and a grounding terminal pin; wherein, the input terminal pin of magnetic induction chip with detect signal input electric connection, the output terminal pin of magnetic induction chip with detect signal output electric connection, the ground connection terminal pin of magnetic induction chip is connected with the ground of reference, just the magnetic induction chip is detecting during the preset signal to detect signal output with detect the same signal of signal input.
5. The uncovering detection circuit according to claim 4, wherein the magnetic induction chip is integrated with a logic processing unit, a third switch tube and a fourth switch tube, and the conduction conditions of the third switch tube and the fourth switch tube are opposite;
the third switch tube and the fourth switch tube are connected in series between the input terminal pin and the grounding terminal pin, the connection point of the third switch tube and the fourth switch tube is electrically connected with the output terminal pin, the control ends of the third switch tube and the fourth switch are respectively electrically connected with the logic processing unit, the logic processing unit senses the signal for switching on the third switch tube and switching off the fourth switch tube when the preset signal is output, and the logic processing unit does not sense the signal for switching off the third switch tube and switching on the fourth switch tube when the preset signal is output.
6. The door opening detection circuit according to claim 5, further comprising a first resistor and a fifth switching tube; the first resistor and the fifth switch tube are connected in series between the detection signal input end and the reference ground, the connection point of the first resistor and the fifth switch tube is electrically connected with the detection signal output end, the control end of the fifth switch tube is electrically connected with the output end pin of the magnetic induction chip, the magnetic induction chip senses the signal for disconnecting the fifth switch tube when the preset signal is output, and the magnetic induction chip does not sense the signal for connecting the fifth switch tube when the preset signal is output.
7. The uncovering detection circuit according to claim 5, wherein the uncovering detection circuit comprises a sixth switching tube and a seventh switching tube, and the conduction conditions of the sixth switching tube and the seventh switching tube are opposite;
the sixth switch tube and the seventh switch tube are connected in series between the detection signal input end and the reference ground, the connection point of the sixth switch tube and the seventh switch tube is electrically connected with the detection signal output end, the control ends of the sixth switch tube and the seventh switch are respectively electrically connected with the output end pin of the magnetic induction chip, the magnetic induction chip senses the preset signal and outputs signals for switching off the seventh switch tube and switching on the sixth switch tube, and the magnetic induction chip does not sense the preset signal and outputs signals for switching on the seventh switch tube and switching off the sixth switch tube.
8. The uncovering detection circuit according to claim 1, wherein the signal generation module comprises a magnetic element, the preset signal is a magnetic field signal, and the signal induction module comprises a magnetic induction chip and a second signal processing module;
the magnetic induction chip comprises an input terminal pin, an output terminal pin and a grounding terminal pin; the second signal processing module comprises a second resistor, an eighth switching tube and a ninth switching tube;
the input terminal pin of the magnetic induction chip is electrically connected with an external power supply, the grounding terminal pin of the magnetic induction chip is connected with a reference ground, and the second resistor and the eighth switch tube are connected in series between the external power supply and the reference ground; the control end of the eighth switching tube is electrically connected with the detection signal input end; the ninth switch tube is connected in series between the output terminal pin of the magnetic induction chip and the detection signal output end, and the control end of the ninth switch tube is electrically connected with an external power supply through the second resistor.
9. An open cover detection apparatus comprising n open cover detection circuits according to any one of claims 1 to 8, said n being a positive integer greater than 1; the signal generating modules of the n uncapping detection circuits are respectively installed in the cover plates of the plurality of high-voltage components, and the detection signal input end of the nth uncapping detection circuit is electrically connected with the detection signal output end of the (n-1) th uncapping detection circuit.
10. The door opening detection device according to claim 9, further comprising a door opening interlock circuit connected in series to n of the door opening detection circuits; the interlock terminal of the lid opening interlock circuit is mounted in the lid plate of the high-voltage part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120248843.9U CN214795033U (en) | 2021-01-28 | 2021-01-28 | Uncovering detection circuit and uncovering detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120248843.9U CN214795033U (en) | 2021-01-28 | 2021-01-28 | Uncovering detection circuit and uncovering detection device |
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| Publication Number | Publication Date |
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| CN214795033U true CN214795033U (en) | 2021-11-19 |
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| CN202120248843.9U Active CN214795033U (en) | 2021-01-28 | 2021-01-28 | Uncovering detection circuit and uncovering detection device |
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| CN (1) | CN214795033U (en) |
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Address after: 215000 52 tianedang Road, Yuexi, Wuzhong District, Suzhou City, Jiangsu Province Patentee after: Suzhou Huichuan United Power System Co.,Ltd. Address before: 215000 52 tianedang Road, Yuexi Town, Wuzhong District, Suzhou City, Jiangsu Province Patentee before: SUZHOU HUICHUAN UNITED POWER SYSTEM Co.,Ltd. |
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