CN218601367U - Tool for measuring parasitic current of automobile - Google Patents

Abstract

The utility model discloses a measure car parasitic current's frock, include the device casing and locate measuring circuit in the device casing, be equipped with on the device casing with measuring circuit electric connection's first detection cable, second detection cable, all be equipped with the electrification on first detection cable, the second detection cable and press from both sides. The utility model discloses a set up measuring circuit, can be used to detect the car electric current, thereby detect the parasitic current in the car circuit, it is more convenient to detect, normally open four-pin relay, five-pin relay can be used to protect measuring circuit, this application is measured the parasitic current more conveniently, reduce measuring time, measurement accuracy is high, numerical value shows the accuracy, effectively guarantee a repair rate, relay control frock circuit, the security is high, this application will connect the electric clamp setting to be flat state, reduce and connect the electric clamp thickness, be convenient for connect the electric clamp to stretch into various gaps, be convenient for connect the electric clamp to stretch into the gap between the electric pole that connects of car storage battery and the car electricity storage battery clamp.

Description

Tool for measuring parasitic current of automobile

Technical Field

The utility model relates to a technical field of auxiliary assembly, especially the technical field of the frock of measuring car parasitic current are repaiied to vapour.

Background

With the development of the computer industry, the electronic control system is more and more complex and huge in the automobile industry. The development of the electric control system enables the automobile to be greatly developed and advanced in the aspects of safety, comfort, reliability and the like. The complexity and bulkiness of the electric control system enable the parasitic current of the automobile electric system to be increased, once the parasitic current exceeds a safety value, the storage battery is in power shortage or is damaged early, and vehicle fire can be caused after verification. The detection of parasitic currents is becoming increasingly important in the maintenance and servicing of automotive electrical systems.

The parasitic current of the electric system of the automobile means that some motors or circuits continue to consume the discharge current of the storage battery after the power switch and other electric switches are closed. The unit is "mA". In fact, after the automobile power switch and other electrical switches are turned off, the running information of the vehicle needs to be stored in a memory of an Electronic Control Unit (ECU), and electrical equipment such as an electronic quartz watch, an electronic tuning radio and tape player need to be powered. These appliances save relevant data in a low power consumption mode. And entering a dormant state after the power switch is turned off for 5-60min according to the quantity of the automobile electrical equipment and the intelligent degree. In normal state, the current in sleep is only about 20mA, so the storage battery has trace current output and is normal. On the other hand, after the power switch of the automobile is turned off, a plurality of electrical equipment on the automobile has inevitable and micro-power consumption. These discharge currents are collectively referred to as parasitic currents.

The parasitic current is one of 8206, when it exceeds safety, 8206, the value will result in storage 8206, when the battery is in power failure or 8206, when the battery is damaged early and seriously, the value may also be 8206, when it can result in vehicle 8206and fire. Measuring the parasitic current is a relatively frequent routine for vehicle maintenance workers. At present, the main methods for measuring the parasitic current of the automobile are multimeter measurement and current clamp measurement. The universal meter measurement method needs to be established ties the universal meter after dismantling vehicle storage battery negative pole and measures in the negative pole return circuit, that is to say need will cut off the power supply, consequently can arouse that vehicle electrical components need reset or even theftproof is decoded to the operation can arouse the universal meter to damage by some mistake. The multimeter measurement method needs to connect the multimeter pen after the outage, and the large current easily causes pen-shape metre ablation and other potential safety hazards through the pen-shape metre in the connection process to work efficiency is low. The current clamp has low measurement precision, is more suitable for measurement under the condition of large current, and cannot meet the measurement of parasitic small current.

Disclosure of Invention

The utility model aims at solving the problem in the prior art, providing a measure car parasitic current's frock, be convenient for measure the parasitic current in the car circuit.

In order to achieve the above purpose, the utility model provides a tool for measuring automobile parasitic current, which comprises a device shell and a measuring circuit arranged in the device shell, wherein the device shell is provided with a first detecting cable and a second detecting cable which are electrically connected with the measuring circuit, the first detecting cable and the second detecting cable are respectively provided with an electricity connecting clip, the measuring circuit comprises a low-voltage power supply, a normally-open four-pin relay, a five-pin relay, a control switch, a resistor and a digital display ammeter, the No. 87 pin of the normally-open four-pin relay is connected with the first detecting cable, the first detecting cable extends out of the device shell, the No. 30 pin of the normally-open four-pin relay is connected with the detection input end of the digital display ammeter, the No. 86 pin and the No. 85 pin of the normally-open four-pin relay are respectively connected with the positive electrode and the negative electrode of the low-voltage power supply, the power input end and the power output end of the digital display ammeter are respectively connected with the positive electrode and the negative electrode of the low-voltage power supply, the pin 30 and the pin 87a of the five-pin relay are respectively connected with the resistor and the second detection cable, the other end of the resistor is connected with the first detection cable, the pin 30 and the pin 87a of the five-pin relay are kept normally open, the pin 86 and the pin 85 of the five-pin relay are respectively connected with the positive electrode and the negative electrode of the low-voltage power supply, the detection output end of the digital display ammeter is connected with the second detection cable, the display panel of the digital display ammeter extends out of the device shell, the power connection clamp comprises a main clamp body with conductive performance, the main clamp body is flat, one end of the main clamp body is electrically connected with the first detection cable or the second detection cable, the other end of the main clamp body is provided with a hook body, the hook body is arranged in a direction towards the first detection cable or the second detection cable, be equipped with the spout that sets up along its length direction on the main clamp body, establish in the spout rather than sliding connection's slider, be close to on the main clamp body the one side of colluding the body be equipped with the first open slot of spout intercommunication, it colludes rather than the vice fender of an organic whole connection to be equipped with on the slider, vice fender colludes and runs through first open slot extends to outside the first open slot, be equipped with in the spout and be used for the drive the slider is to being close to collude the gliding elastic component of end of body.

Preferably, the measuring circuit further comprises a control switch arranged at the positive pole of the low-voltage power supply, and the control switch extends out of the device shell.

Preferably, the measuring circuit further comprises an indicator light, the indicator light is arranged between the No. 30 pin of the five-pin relay and the resistor, and the indicator light extends out of the device shell.

Preferably, the elastic member is a rubber elastic belt.

Preferably, the auxiliary blocking hook is gradually inclined towards the direction of the hook body from the position close to the sliding block end to the position far away from the sliding block end, and the distance between the tail end of the auxiliary blocking hook and the main clamp body is larger than the distance between the tail end of the hook body and the main clamp body.

Preferably, the hook body is internally provided with a second open slot matched with the auxiliary blocking hook.

Preferably, the width of the hook groove gradually decreases from the end close to the first detection cable or the second detection cable to the end far away from the first detection cable or the second detection cable.

Preferably, a non-conductive insulating handheld portion is further disposed at one end of the main clamp body, which is close to the first detection cable or the second detection cable.

Preferably, the side of the main clamp body is provided with an electric connecting piece electrically connected with the first detection cable and the second detection cable.

The utility model relates to a measure beneficial effect of car parasitic current's frock: the utility model discloses a set up measuring circuit, can be used to detect car electric current, thereby detect the parasitic current in the car circuit, it is more convenient to detect, normally open four-pin relay, five-pin relay can be used to protect measuring circuit, it is more convenient this application measures parasitic current, reduce measuring time, measurement accuracy is high, numerical value shows the accuracy, effectively guarantee a repair rate, relay control frock circuit, the security is high, this application will connect the electric clamp to set up to flat state, reduce and connect the electric clamp thickness, it stretches into various gaps to be convenient for connect the electric clamp, it stretches into the gap between the power receiving electrode post of car storage battery and car electricity storage battery clamp to be convenient for connect the electric clamp, just before connecting electrode post and car electricity storage battery clamp do not separate alright stretch into the gap between power receiving electrode post and the car electricity storage battery clamp and connect the electrode post and the car electricity storage battery clamp with the car and connect the electric clamp to be connected respectively, can keep connecting the electric pole and the car to connect the electric battery clamp to keep not cutting off the power supply when connecting electrode post and car electricity storage battery clamp after connecting electrode post and car electricity storage battery clamp separate, realize exempting from the outage and measure, avoid car electrical component to need disturbing such as programming after cutting off the power supply.

The features and advantages of the present invention will be described in detail by embodiments with reference to the accompanying drawings.

Drawings

Fig. 1 is the utility model relates to a measure car parasitic current's frock structure sketch map.

Fig. 2 is a schematic diagram of a measuring circuit structure of the tool for measuring the parasitic current of the automobile of the present invention.

Fig. 3 is a schematic view of the main structure of the power receiving clamp of the tool for measuring the parasitic current of the automobile.

Fig. 4 is a side view schematic diagram of the power connection clamp of the tool for measuring the parasitic current of the automobile.

Fig. 5 is a schematic view of the other side structure of the electric clip of the tool for measuring the parasitic current of the automobile of the present invention.

Fig. 6 is a schematic view of the structure of the auxiliary gear of the tool for measuring the parasitic current of the automobile when the auxiliary gear is engaged with the hook.

Wherein:

1-a device housing; 2-a low voltage power supply; 3-normally open four-pin relay; 4-five-pin relay; 5-a control switch; 6-resistance; 7-digital display ammeter; 8-a first detection cable; 9-a second detection cable; 10-connecting an electric clamp; 11-an indicator light; 101-a main clamp body; 102-a slide block; 103-auxiliary gear hook; 104-a spring; 105-an insulating handpiece; 106-connecting the electric piece; 1011-hook body; 1012-hook groove; 1013-chute.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail through the accompanying drawings and embodiments. It should be understood, however, that the description herein of specific embodiments is for purposes of illustration only and is not intended to limit the scope of the present disclosure. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

In the description of the present invention, it should be noted that when an element is referred to as being "fixed" or "disposed" to another element, it can be directly on the other element or be indirectly connected to the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

In the description of the present invention, it should be noted that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and the description is only for convenience of description and simplification, but the indication or suggestion that the device or element to which the description refers must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The first embodiment is as follows:

referring to fig. 1, 2, 3, 4, 5 and 6, the utility model discloses a tool for measuring parasitic current of an automobile, which comprises a device shell 1 and a measuring circuit arranged in the device shell 1, wherein the device shell 1 is provided with a first detecting cable 8 and a second detecting cable 9 which are electrically connected with the measuring circuit, the first detecting cable 8 and the second detecting cable 9 are respectively provided with an electric clip 10, the measuring circuit comprises a 12V low-voltage power supply 2, a normally open four-pin relay 3, a five-pin relay 4, a control switch 5, a resistor 6 and a digital display ammeter 7, a No. 87 pin of the normally open four-pin relay 3 is connected with the first detecting cable 8, the first detecting cable 8 extends out of the device shell 1, a No. 30 pin of the normally open four-pin relay 3 is connected with a detecting input end of the digital display ammeter 7, no. 86 feet and No. 85 feet of the normally-open four-foot relay 3 are connected respectively the positive pole and the negative pole of the low-voltage power supply 2, the power input end and the power output end of the digital display ammeter 7 are connected respectively the positive pole and the negative pole of the low-voltage power supply 2, no. 30 feet and No. 87a feet of the five-foot relay 4 are connected respectively the resistor 6 and the second detection cable 9, the other end of the resistor 6 is connected with the first detection cable 8, the No. 30 feet and the No. 87a feet of the five-foot relay 4 are kept normally open, the No. 86 feet and the No. 85 feet of the five-foot relay 4 are connected respectively the positive pole and the negative pole of the low-voltage power supply 2, the detection output end of the digital display ammeter 7 is connected with the second detection cable 9, and the display panel of the digital display ammeter 7 extends to the outside of the device shell 1. Through setting up measuring circuit in this embodiment, can be used to detect the car electric current to detect the parasitic current in the car circuit, it is more convenient to detect, and normally open four-pin relay 3, five-pin relay 4 can be used to protect measuring circuit, and this application measurement parasitic current is more convenient, reduces measuring time, and measurement accuracy is high, and numerical value demonstration is accurate, effectively guarantees a restoration rate, relay control frock circuit, and the security is high. This application is when measuring, keep under the connected state at car storage battery utmost point post and car negative pole cable, can be earlier through connecing electric clamp 10 to be connected to car negative pole cable first detection cable 8 on, will be connected to car storage battery utmost point post through connecing electric clamp 10 with second detection cable 9, then with car storage battery utmost point post and the separation of car negative pole cable, communicate through measuring circuit between car storage battery utmost point post and the car negative pole cable, can keep uninterrupted power measurement, measure the electric current through digital display ampere meter 7, after the measurement is accomplished, link together car storage battery utmost point post and car negative pole cable once more, then will connect electric clamp 10 to separate can.

Referring to fig. 3, 4, 5, and 6, on the basis of the above, the present embodiment improves the electrical clip 10, the electrical clip 10 includes a main clip body 101 having a conductive property, the main clip body 101 is flat, one end of the main clip body 101 is electrically connected to the first detection cable 8 or the second detection cable 9, and the other end of the main clip body is provided with a hook 1011, the hook 1011 is provided with a hook slot 1012 facing the first detection cable 8 or the second detection cable 9, the main clip body 101 is provided with a sliding slot 1013 along a length direction thereof, the sliding slot 1013 is internally provided with a sliding block 102 slidably connected thereto, one side of the main clip body 101 close to the hook 1011 is provided with a first open slot communicating with the sliding slot 1013, the sliding block 102 is provided with an auxiliary hook 103 integrally connected thereto, the auxiliary hook 103 penetrates through the first open slot and extends to the outside of the first open slot, and the sliding block 1013 is internally provided with an elastic member 104 for driving the sliding block 102 to slide close to the end of the hook 1011. To connect the clamp 10 to set up to the flat state in this embodiment, reduce and connect clamp 10 thickness, be convenient for connect clamp 10 to stretch into various gaps, be convenient for connect clamp 10 to stretch into the gap between the connection electrode post of car storage battery and the car meets the gap between the battery clamp, thereby just can stretch into the gap between connection electrode post and the car and connect the gap between the battery clamp and be connected respectively with the connection electrode post and the car of storage battery and connect the battery clamp before connection electrode post and car connect the battery clamp and do not separate, can keep connecting electrode post and car and connect the battery clamp and keep not cutting off the power supply after connecting electrode post and car and connect the battery clamp separation, realize the measurement of exempting from cutting off the power supply, avoid car electrical component after the outage to need troubles such as programming.

Referring to fig. 1 and 2, the measurement circuit further includes a control switch 5 disposed at the positive electrode of the low voltage power supply 2, and the control switch 5 extends to the outside of the device housing 1. The opening and closing of the tool are conveniently controlled through the control switch 5.

Referring to fig. 1 and 2, the measuring circuit further includes an indicator light 11, the indicator light 11 is disposed between the pin 30 of the five-pin relay 4 and the resistor 6, and the indicator light 11 extends out of the device housing 1. The indicator light 11 is used for indicating whether the first detection cable 8 and the second detection cable 9 are correctly connected with the cathode of the automobile battery and the cathode end of the automobile circuit, and if the indicator light is on, the first detection cable 8 and the second detection cable 9 are normally connected; if the lamp is not on, the first detection cable 8 and the second detection cable 9 are not normally connected.

The second embodiment:

referring to fig. 3, 4, 5 and 6, on the basis of the first embodiment, the elastic element 104 in this embodiment is a rubber elastic band. The rubber elastic band is also flat and thin, so that the electric clamp 10 is prevented from being influenced to extend into the gap.

Referring to fig. 3, 4, 5 and 6, the auxiliary hook 103 is gradually inclined toward the hook body 1011 from the end close to the slider 102 to the end far from the slider 102, and the distance between the end of the auxiliary hook 103 and the main clip body 101 is greater than the distance between the end of the hook body 1011 and the main clip body 101. The arrangement mode is convenient for the battery post or the battery clamp or the power line of the power receiving clamp 10, the auxiliary blocking hook 103 slides towards the direction of the hook body 1011 under the action of the rubber elastic band in a conventional state so as to close the auxiliary blocking hook 103 and the hook body 1011, when the power receiving clamp 10 needs to be connected to the battery post or the battery clamp or the power line, the convex part of the auxiliary blocking hook 103 faces towards the battery post or the battery clamp or the power line, then the hook body 1011 is integrally pushed forwards, the thrust causes the auxiliary blocking hook 103 to slide towards the direction away from the hook body 1011, the auxiliary blocking hook 103 is separated from the hook body 1011, the battery post or the battery clamp or the power line conveniently slides into the hook groove 1012, the power receiving clamp 10 is loosened, the elastic piece 104 drives the auxiliary blocking hook 103 to automatically reset, the battery post or the battery clamp or the power line is clamped between the auxiliary blocking hook body 1011 and the auxiliary blocking hook body 1011, the battery post or the battery clamp or the power line is required to be separated from the power receiving clamp 10, the battery post or the auxiliary blocking hook 103 can be directly pushed forwards, the auxiliary blocking hook 103 and the battery clamp or the power line is horizontally moved towards the opening, and the auxiliary blocking hook body 103 can be separated from the opening, and the side edge of the battery clamp or the power line can be separated from the hook body.

Preferably, a second open slot adapted to the auxiliary hook 103 is provided in the hook body 1011. The hook body 1011 can be accommodated in the second open groove when moving to the side of the sub hook 103.

Referring to fig. 3, 4, 5 and 6, the width of the hooking groove 1012 gradually decreases from the end close to the first detection cable 8 or the second detection cable 9 to the end far from the first detection cable 8 or the second detection cable 9. The device can be suitable for battery posts or battery clamps or power lines with different diameters.

Referring to fig. 3 and 6, the auxiliary hook 103 is gradually inclined toward the hook body 1011 from the end close to the slider 102 to the end far from the slider 102, and the distance between the end of the auxiliary hook 103 and the main clip body 101 is greater than the distance between the end of the hook body 1011 and the main clip body 101. The battery post or the battery clamp or the power line can conveniently enter the opening position between the auxiliary blocking hook 103 and the hook body 1011.

Referring to fig. 3 and 6, a non-conductive insulating handheld portion 105 is further disposed at one end of the main clamp body 101 close to the first detection cable 8 or the second detection cable 9. The insulating handheld part 105 is used for being held by a worker to improve safety.

Referring to fig. 3 and 6, the main clamp body 101 is provided at a side thereof with an electrical connection tab 106 electrically connected to the first detection cable 8 and the second detection cable 9.

The utility model discloses the working process:

the utility model relates to a measure car parasitic current's frock is in the course of the work, during the measurement, keep under the connected state at car storage battery utmost point post and car negative pole cable, can be earlier through connect electric clamp 10 with first detection cable 8 be connected to car negative pole cable on, will be connected to car storage battery utmost point post with second detection cable 9 through connecting electric clamp 10, then separate car storage battery utmost point post and car negative pole cable, communicate through measuring circuit between car storage battery utmost point post and the car negative pole cable, can keep uninterrupted power measurement, through 7 measuring currents of digital display ampere meter, after the measurement is accomplished, link together car storage battery utmost point post and car negative pole cable once more, then will connect electric clamp 10 to separate can.

Standard parts used in the application document can be purchased from the market, the specific connection mode of each part adopts conventional means such as mature bolts, rivets, welding and the like in the prior art, the internal parts of the electric sliding rail sliding seat, the air cylinder, the welding machine, the electric telescopic rod and the controller all adopt conventional models in the prior art, the internal structure of the electric sliding rail sliding seat, the air cylinder, the welding machine, the electric telescopic rod and the controller belongs to the structure of the prior art, a worker can complete normal operation of the electric sliding rail sliding seat according to a manual of the prior art, the circuit connection adopts the conventional connection mode in the prior art, and specific description is not made.

It should be noted that, although the above embodiments have been described herein, the scope of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, changes and modifications made to the embodiments described herein, or equivalent structures or equivalent flow changes made by using the contents of the specification and the drawings of the present invention, directly or indirectly apply the above technical solutions to other related technical fields, all included in the scope of the present invention.

Claims (9)

1. The utility model provides a measure car parasitic current's frock, includes device casing (1) and locates measuring circuit in device casing (1), be equipped with on device casing (1) with measuring circuit electric connection's first detection cable (8), second detection cable (9), all be equipped with on first detection cable (8), second detection cable (9) and connect electric clamp (10), its characterized in that: the measuring circuit comprises a low-voltage power supply (2), a normally-open four-pin relay (3), a five-pin relay (4), a control switch (5), a resistor (6) and a digital display ammeter (7), wherein a pin 87 of the normally-open four-pin relay (3) is connected with a first detection cable (8), the first detection cable (8) extends out of a device shell (1), a pin 30 of the normally-open four-pin relay (3) is connected with a detection input end of the digital display ammeter (7), a pin 86 and a pin 85 of the normally-open four-pin relay (3) are respectively connected with a positive electrode and a negative electrode of the low-voltage power supply (2), a power input end and a power output end of the digital display ammeter (7) are respectively connected with a positive electrode and a negative electrode of the low-voltage power supply (2), a pin 30 and a pin 87a pin of the five-pin relay (4) are respectively connected with the resistor (6) and a second detection cable (9), the other end of the resistor (6) is connected with the first detection cable (8), a pin 30 a pin and a pin 87a pin of the five-pin relay (4) are respectively connected with a negative electrode of the digital display ammeter (7), the digital display device is connected with a negative electrode of the digital display ammeter (7) and a display panel (85), connect electric clamp (10) including the main clamp body (101) that has the electrically conductive ability, the main clamp body (101) is the platykurtic, main clamp body (101) one end with first detection cable (8) or second detection cable (9) electric connection, the other end are equipped with and collude body (1011), collude body (1011) department be equipped with the orientation first detection cable (8) or collude groove (1012) that second detection cable (9) direction set up, be equipped with spout (1013) that set up along its length direction on main clamp body (101), establish in spout (1013) in slider (102) rather than sliding connection, be close to on main clamp body (101) collude one side of body (1011) be equipped with the first open slot of spout (1013) intercommunication, be equipped with on slider (102) rather than the vice fender (103) of an organic whole connection, vice fender (103) run through first colludes and extends to outside first, be equipped with in slider (1013) and be used for the drive elasticity piece that the slider (102) are close to the open slot (104) slip end of the open slot (1011).

2. The tool for measuring the parasitic current of the automobile as claimed in claim 1, wherein: the measuring circuit further comprises a control switch (5) arranged on the positive pole of the low-voltage power supply (2), and the control switch (5) extends out of the device shell (1).

3. The tool for measuring the parasitic current of the automobile according to claim 1, wherein: the measuring circuit further comprises an indicator light (11), the indicator light (11) is arranged between the No. 30 pin of the five-pin relay (4) and the resistor (6), and the indicator light (11) extends out of the device shell (1).

4. The tool for measuring the parasitic current of the automobile according to claim 1, wherein: the elastic piece (104) is a rubber elastic band.

5. The tool for measuring the parasitic current of the automobile according to claim 1, wherein: the auxiliary blocking hook (103) is arranged in a mode that the end close to the sliding block (102) is inclined towards the direction of the hook body (1011) gradually to the end far away from the sliding block (102), and the distance between the tail end of the auxiliary blocking hook (103) and the main clamp body (101) is larger than the distance between the tail end of the hook body (1011) and the main clamp body (101).

6. The tool for measuring the parasitic current of the automobile as claimed in claim 1, wherein: a second open slot matched with the auxiliary blocking hook (103) is arranged in the hook body (1011).

7. The tool for measuring the parasitic current of the automobile according to claim 1, wherein: the width of the hook groove (1012) is gradually reduced from the end close to the first detection cable (8) or the second detection cable (9) to the end far away from the first detection cable (8) or the second detection cable (9).

8. The tool for measuring the parasitic current of the automobile according to claim 1, wherein: and a non-conductive insulating handheld part (105) is further arranged at one end, close to the first detection cable (8) or the second detection cable (9), of the main clamp body (101).

9. The tool for measuring the parasitic current of the automobile as claimed in claim 1, wherein: and the side edge of the main clamp body (101) is provided with an electric connection piece (106) which is electrically connected with the first detection cable (8) and the second detection cable (9).

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