CN113960347A - Static dark current testing device and method - Google Patents

Static dark current testing device and method Download PDF

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Publication number
CN113960347A
CN113960347A CN202111058028.7A CN202111058028A CN113960347A CN 113960347 A CN113960347 A CN 113960347A CN 202111058028 A CN202111058028 A CN 202111058028A CN 113960347 A CN113960347 A CN 113960347A
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coil
vehicle
dark current
low
scale
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CN113960347B (en
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王健
陈健
何春芳
胡明新
杨诚
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Dongfeng Motor Group Co Ltd
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Dongfeng Motor Group Co Ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

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Abstract

The invention discloses a static dark current testing device, which relates to the technical field of vehicle detection and comprises an iron core, a coil, a spring, an iron block, a pointer and a graduated scale. When the static dark current of the electric part for the vehicle needs to be detected, the connection between the negative wire harness of the storage battery and the negative terminal of the low-voltage storage battery can be disconnected after all the electric parts for the vehicle enter a dormant state, the first end of the coil is connected with the negative terminal of the low-voltage storage battery for the vehicle, the second end of the coil is connected with the ground of the vehicle body, the static dark current of the electric parts at the moment completely flows through the coil, the coil is electrified, the iron core is magnetized, the iron block is attracted to move, the iron block drives the pointer to move and stretch the spring, and after the attraction of the iron core is balanced with the tension of the spring, the scale indicating the current magnitude on the graduated scale pointed by the pointer at the moment is the value of the static dark current.

Description

Static dark current testing device and method
Technical Field
The invention relates to the technical field of vehicle detection, in particular to a static dark current testing device and a static dark current testing method.
Background
Every model of vehicle all probably appears because of the phenomenon that various reasons lead to the battery to lack of electricity in the development process, especially the battery is lack of electricity under vehicle static state and the dormancy state, so need monitor the general with the specific conditions of electric appliances static dark current of whole car to whether the evaluation vehicle appears partial controller and is in the condition of unusual power consumption state, discern the power shortage risk in advance, avoid the test problem or the test interrupt that battery power shortage leads to.
Disclosure of Invention
The invention provides a static dark current testing device and a method, and solves the technical problem of how to detect the static dark current of an electric device for a vehicle.
On one hand, the invention provides the following technical scheme:
a static dark current testing device comprises an iron core, a coil, a spring, an iron block, a pointer and a graduated scale;
the coil is wound on the iron core, a first end of the coil is connected with a negative terminal of a low-voltage storage battery of the vehicle, and a second end of the coil is connected with a vehicle body ground;
one end of the spring is fixed on the vehicle body, the other end of the spring is connected with one end of the iron block, the other end of the iron block is close to the end part of the iron core, and the iron core, the iron block and the spring are positioned on the same straight line;
the pointer is fixed in the iron block and points to the graduated scale, and the graduated scale is marked with scales for indicating the magnitude of the current.
Preferably, the static dark current testing apparatus further comprises:
the first interface is connected with a negative terminal of the low-voltage storage battery, and a first end of the coil is connected with the negative terminal of the low-voltage storage battery through the first interface; the second interface is connected with the vehicle body ground, and the second end of the coil is connected with the vehicle body ground through the second interface.
Preferably, the first interface or the second interface is any one of a banana plug, a banana socket, a lantern plug and a lantern socket.
Preferably, the static dark current testing apparatus further comprises:
a fuse coupled between the second end of the coil and the body ground.
Preferably, the fuse comprises a fuse and a fuse holder, the fuse holder is connected between the second end of the coil and the ground of the vehicle body, and the fuse is detachably connected with the fuse holder.
Preferably, the fuse is a forkbolt fuse or a tab fuse.
On the other hand, the invention also provides the following technical scheme:
a static dark current test method, comprising:
calibrating the scales which represent the current magnitude on the graduated scale;
after all the electric components of the vehicle enter a dormant state, the connection between the negative pole wire harness of the storage battery of the vehicle and the negative pole terminal of the low-voltage storage battery is disconnected, the first end of the coil is connected with the negative pole terminal of the low-voltage storage battery of the vehicle, and the second end of the coil is connected with the ground of the vehicle body.
Preferably, after all the electric components of the vehicle enter a sleep state, the method of disconnecting the negative electrode harness of the vehicle from the negative electrode terminal of the low-voltage battery, connecting the first end of the coil to the negative electrode terminal of the low-voltage battery of the vehicle, and connecting the second end of the coil to the vehicle body ground includes:
after all the electric components of the vehicle enter a dormant state, connecting a first end of the coil with a negative terminal of the low-voltage storage battery, and connecting a second end of the coil with the vehicle body ground;
disconnecting the battery negative wire harness from the negative terminal of the low voltage battery.
Preferably, the calibrating the scale indicating the current magnitude on the scale includes:
when the spring is in a natural state, the pointer points to the zero scale on the graduated scale;
according to the formula
Figure BDA0003255331900000021
Calibrating the scale indicating the current on the graduated scale, wherein I is the scale indicating the current on the graduated scale, delta is the length of an air gap between an iron core and an iron block, N is the number of turns of the coil, mu is the magnetic permeability, a is the correction coefficient, k is the stiffness coefficient of the spring, x is the scale on the graduated scale pointed by the pointer, and s is the total area of the surface of the magnetic pole.
Preferably, after all the electric components of the vehicle enter a sleep state, connecting a first end of the coil to a negative terminal of the low-voltage battery, and connecting a second end of the coil to the vehicle body ground includes:
connecting a first interface to a negative terminal of the low-voltage storage battery, and connecting a second interface to the vehicle body ground;
and after all the electric components of the vehicle enter a dormant state, connecting the first end of the coil with the first interface, and connecting the second end of the coil with the second interface.
One or more technical schemes provided by the invention at least have the following technical effects or advantages:
when the static dark current of the electric part for the vehicle needs to be detected, the connection between the negative wire harness of the storage battery and the negative terminal of the low-voltage storage battery can be disconnected after all the electric parts for the vehicle enter a dormant state, the first end of the coil is connected with the negative terminal of the low-voltage storage battery for the vehicle, the second end of the coil is connected with the ground of the vehicle body, the static dark current of the electric parts at the moment completely flows through the coil, the coil is electrified, the iron core is magnetized, the iron block is attracted to move, the iron block drives the pointer to move and stretch the spring, and after the attraction of the iron core is balanced with the tension of the spring, the scale indicating the current magnitude on the graduated scale pointed by the pointer at the moment is the value of the static dark current.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is a schematic diagram of a static dark current testing apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of another embodiment of a device for testing static dark current;
FIG. 3 is a flowchart of a method for testing static dark current according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention provides a static dark current testing device and a method, and solves the technical problem of how to detect the static dark current of an electric device for a vehicle.
In order to better understand the technical scheme of the invention, the technical scheme of the invention is described in detail in the following with the accompanying drawings and specific embodiments.
First, it is stated that the term "and/or" appearing herein is merely one type of associative relationship that describes an associated object, meaning that three types of relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
As shown in fig. 1, the apparatus for testing static dark current of the present embodiment includes an iron core, a coil, a spring, an iron block, a pointer and a scale. The coil is wound on the iron core, the first end of the coil is connected with the negative terminal of the low-voltage storage battery of the vehicle, and the second end of the coil is connected with the ground of the vehicle body. One end of the spring is fixed on the vehicle body, the other end of the spring is connected with one end of the iron block, the other end of the iron block is close to the end part of the iron core, and the iron core, the iron block and the spring are located on the same straight line. The pointer is fixed in the iron plate and points to the scale, and the scale is marked with the scale for indicating the current magnitude.
The iron core can be soft iron, and the coil circular telegram back, the magnetic field magnetization that the iron core produced by the coil, the iron core after the magnetization has also become a magnet and has attracted the iron plate, and the iron plate receives the effect of attraction and can drive the pointer and remove, can lengthen the spring simultaneously, and the spring can produce reverse pulling force to the iron plate, and the iron plate can be under the effect of attraction and reverse pulling force the force of atress balance.
In general, a vehicle is provided with a low-voltage battery, electric components, a power supply harness, a vehicle body ground and a battery negative electrode harness, as shown in fig. 1, the low-voltage battery is a 12V or 24V battery, and the low-voltage battery, the electric components, the power supply harness, the vehicle body ground and the battery negative electrode harness normally form a complete closed circuit. When it is not necessary to detect the static dark current of the electric components for the vehicle, even if all the electric components for the vehicle enter the sleep state, the static dark current of the electric components at this time flows entirely through the battery negative electrode harness. The zero scale on the scale that the pointer points to when this embodiment sets for the spring to be in natural state, when the static dark current of the electric part for the vehicle needs to be detected, treat that all electric parts for the vehicle get into the dormancy state after, the connection of disconnection battery negative pole pencil and low voltage battery negative pole terminal, connect the negative pole terminal of vehicle low voltage battery with the first end of coil, connect the automobile body ground with the second end of coil, the static dark current of the electric part for the time is whole to flow through the coil, the coil circular telegram, the iron core magnetization, attract the iron plate to remove, the iron plate drives the pointer and removes and elongates the spring, treat that the appeal of iron core and spring pulling force are balanced after, the scale that shows the electric current size on the scale that the pointer points to this moment is the value of static dark current promptly.
Considering that the vehicle does not need to detect the static dark current at any moment, in order to avoid that the coil is connected between the negative terminal of the low-voltage battery and the vehicle body ground at any moment, the static dark current testing device of the embodiment preferably further comprises a first interface and a second interface, as shown in fig. 2, the first interface is connected with the negative terminal of the low-voltage battery, and the first end of the coil is connected with the negative terminal of the low-voltage battery through the first interface; the second interface is connected with the vehicle body ground, and the second end of the coil is connected with the vehicle body ground through the second interface. The first interface and the second interface are conductive terminals with insulation protection functions, are not in contact with each other, are fixed together and keep a certain distance, and are not in electrical connection under normal conditions. The first interface and the second interface include, but are not limited to, any one of a banana plug, a banana socket, a lantern plug, and a lantern socket. Therefore, when the static dark current does not need to be detected, the connection between the first end of the coil and the first interface and the connection between the second end of the coil and the second interface can be disconnected, and the static dark current testing device is placed in the vehicle; when the static dark current needs to be detected, the first end and the first interface of the coil and the second end and the second interface of the coil can be connected.
In addition, the static dark current testing device of the embodiment further comprises a fuse, and the fuse is connected between the second end of the coil and the ground of the vehicle body. The fuse comprises a fuse and a fuse seat, the fuse seat is connected between the second end of the coil and the ground of the vehicle body, and the fuse is detachably connected with the fuse seat, for example, the fuse is connected with the fuse seat through bolts and nuts, or the fuse is directly inserted into the fuse seat for connection. The fuse may be a forkbolt fuse or a blade fuse. The fuse is used for protecting the static dark current testing device, and when the current passing through the static dark current testing device exceeds the maximum current which can be borne by the fuse, the fuse is instantly fused, so that the coil and the like are prevented from being damaged or burnt.
Certainly, in the embodiment, an ammeter or an ammeter can be selected as the static dark current testing device, but the ammeter belongs to precise equipment and is not convenient to be placed on a vehicle for a long time, and when the vehicle runs for a long time, the ammeter is easy to damage; if the current meter has a certain measuring range, the actual static dark current value is not known before the static dark current is tested, and after the current meter is connected to a tested loop, if the static dark current exceeds the measuring range of the current meter, the current meter is damaged; if a digital current meter is used to measure the current, the cost of the whole testing device is high. The static dark current testing device of the embodiment can be conveniently placed on a vehicle for a long time, is not easy to damage, does not have the problem of over-range damage, and is low in cost. It is easy to think that the static dark current test device of the present embodiment can detect the static dark current of a single electric component, can detect the static dark current of the whole part of the electric components, and can detect the static dark current of the whole part of all the electric components.
As shown in fig. 3, the present embodiment further provides a method for testing a static dark current, including:
step S1, calibrating the scale indicating the current on the scale;
and step S2, after all the electric parts of the vehicle enter the dormant state, disconnecting the negative pole wire harness of the storage battery of the vehicle from the negative pole terminal of the low-voltage storage battery, connecting the first end of the coil with the negative pole terminal of the low-voltage storage battery of the vehicle, and connecting the second end of the coil with the vehicle body ground.
In step S1, the scale indicating the current level is calibrated, that is, the scale indicating the current level is marked on the existing length scale on the scale, and if the existing length scale is zero, the scale indicating the current level is corresponding to 0 mA. Specifically, step S1 includes: when the spring is in a natural state, the pointer points to the zero scale on the graduated scale; according to the formula
Figure BDA0003255331900000061
The calibration method comprises the steps of calibrating a scale indicating the magnitude of current on a graduated scale, wherein I is the scale indicating the magnitude of current on the graduated scale, delta is the length of an air gap between an iron core and an iron block, N is the number of turns of a coil, mu is magnetic permeability, a is a correction coefficient, an empirical value is about 3-5, k is the stiffness coefficient of a spring, x is the scale on the graduated scale pointed by a pointer, and s is the total area of the surface of a magnetic pole. The natural state of the spring means that the spring receives neither tension nor compression.
When static dark current flows through the coil, the magnetic induction intensity in the air gap that the iron core produced is:
Figure BDA0003255331900000062
b is the magnetic induction in the air gap. The iron blocks are at a certain distance from the iron core, the magnetic flux is unevenly distributed, and the attraction force on the iron blocks is
Figure BDA0003255331900000063
Fx is the attractive force to which the iron block is subjected. The iron block can move towards the iron core under the action of attractive force and stretch the spring, the spring can generate reverse tensile force, and the iron block can be stressed in a balanced manner under the action of the attractive force and the reverse tensile force of the spring. At the moment, the attractive force and the reverse tension are equal, and the spring has the reverse tensionIs FlK · x. From Fx ═ Fl, one can obtain
Figure BDA0003255331900000071
x represents both the scale on the scale to which the pointer points and the amount of extension of the spring. Therefore, the original length scales on the graduated scale are used as x and substituted into the formula, and the scales which correspond to the scales with any length and represent the current magnitude can be obtained.
In step S2, the connection between the negative electrode harness of the battery and the negative electrode terminal of the low-voltage battery may be disconnected before the coil is connected, or the connection between the negative electrode harness of the battery and the negative electrode terminal of the low-voltage battery may be disconnected after the coil is connected. It is considered that if the connection between the negative electrode harness of the battery and the negative electrode terminal of the low-voltage battery is disconnected and then the coil is connected, the coil is connected in a live operation. To avoid electrically connecting the coils, the step S2 of the present embodiment preferably includes:
after all the electric components of the vehicle enter a dormant state, connecting a first end of the coil with a negative terminal of a low-voltage storage battery, and connecting a second end of the coil with a vehicle body ground;
and disconnecting the negative electrode wire harness of the storage battery from the negative electrode terminal of the low-voltage storage battery.
Therefore, the coil is connected first and then the connection between the negative wire harness of the storage battery and the negative terminal of the low-voltage storage battery is disconnected, so that the coil can be prevented from being connected in an electrified manner.
In order to avoid the coil from being constantly connected between the negative terminal of the low-voltage battery and the vehicle body ground, considering that the vehicle does not need to detect the static dark current constantly, the static dark current testing device of the present embodiment further includes a first interface and a second interface. Thereby treat after all electric parts of vehicle get into the dormancy state, connect the negative terminal of low voltage battery with the first end of coil, connect the second end of coil with the automobile body ground, include:
connecting the first interface with a negative terminal of the low-voltage storage battery, and connecting the second interface with a vehicle body ground;
and after all the electric components of the vehicle enter a dormant state, connecting the first end of the coil with the first interface, and connecting the second end of the coil with the second interface.
Therefore, when the static dark current does not need to be detected, the connection between the first end of the coil and the first interface and the connection between the second end of the coil and the second interface can be disconnected, and the static dark current testing device is placed in the vehicle; when the static dark current needs to be detected, the first end and the first interface of the coil and the second end and the second interface of the coil are connected so as to connect the coil into the circuit.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1.一种静态暗电流测试装置，其特征在于，包括铁芯、线圈、弹簧、铁块、指针及刻度尺；1. a static dark current testing device, is characterized in that, comprises iron core, coil, spring, iron block, pointer and scale; 所述线圈缠绕在所述铁芯上，所述线圈的第一端连接车辆低压蓄电池的负极端子，所述线圈的第二端连接车身地；The coil is wound on the iron core, the first end of the coil is connected to the negative terminal of the low-voltage battery of the vehicle, and the second end of the coil is connected to the ground of the vehicle body; 所述弹簧的一端固定于车身，所述弹簧的另一端连接所述铁块的一端，所述铁块的另一端靠近所述铁芯的端部，所述铁芯、所述铁块及所述弹簧处于同一直线上；One end of the spring is fixed to the vehicle body, the other end of the spring is connected to one end of the iron block, the other end of the iron block is close to the end of the iron core, the iron core, the iron block and the The springs are in the same line; 所述指针固定于所述铁块且指向所述刻度尺，所述刻度尺上标注有表示电流大小的刻度。The pointer is fixed on the iron block and points to the scale, and the scale is marked with a scale representing the magnitude of the current. 2.如权利要求1所述的静态暗电流测试装置，其特征在于，还包括：2. static dark current testing device as claimed in claim 1, is characterized in that, also comprises: 第一接口和第二接口，所述第一接口连接所述低压蓄电池的负极端子，所述线圈的第一端通过所述第一接口连接所述低压蓄电池的负极端子；所述第二接口连接所述车身地，所述线圈的第二端通过所述第二接口连接所述车身地。a first interface and a second interface, the first interface is connected to the negative terminal of the low-voltage battery, the first end of the coil is connected to the negative terminal of the low-voltage battery through the first interface; the second interface is connected to the negative terminal of the low-voltage battery The vehicle body ground, the second end of the coil is connected to the vehicle body ground through the second interface. 3.如权利要求2所述的静态暗电流测试装置，其特征在于，所述第一接口或第二接口为香蕉插头、香蕉插座、灯笼插头及灯笼插座中的任意一种。3 . The static dark current testing device according to claim 2 , wherein the first interface or the second interface is any one of a banana plug, a banana socket, a lantern plug and a lantern socket. 4 . 4.如权利要求1所述的静态暗电流测试装置，其特征在于，还包括：4. static dark current testing device as claimed in claim 1, is characterized in that, also comprises: 保险，所述保险接入所述线圈的第二端与所述车身地之间。The insurance is connected between the second end of the coil and the ground of the vehicle body. 5.如权利要求4所述的静态暗电流测试装置，其特征在于，所述保险包括保险丝和保险座，所述保险座接入所述线圈的第二端与所述车身地之间，所述保险丝与所述保险座可拆卸连接。5 . The static dark current test device according to claim 4 , wherein the fuse comprises a fuse and a fuse seat, and the fuse seat is connected between the second end of the coil and the ground of the vehicle body. The fuse is detachably connected to the fuse holder. 6.如权利要求5所述的静态暗电流测试装置，其特征在于，所述保险丝为叉栓式保险丝或插片保险丝。6 . The static dark current testing device according to claim 5 , wherein the fuse is a fork-bolt fuse or a blade fuse. 7 . 7.一种静态暗电流测试方法，其特征在于，包括：7. a static dark current testing method, is characterized in that, comprises: 对刻度尺上表示电流大小的刻度进行标定；Calibrate the scale representing the current on the scale; 待车辆的所有用电部件进入休眠状态后，断开车辆的蓄电池负极线束与所述低压蓄电池的负极端子之间的连接，将线圈的第一端连接车辆低压蓄电池的负极端子，将所述线圈的第二端连接车身地。After all the electrical components of the vehicle enter the dormant state, disconnect the connection between the negative wiring harness of the battery of the vehicle and the negative terminal of the low-voltage battery, connect the first end of the coil to the negative terminal of the low-voltage battery of the vehicle, and connect the coil to the negative terminal of the low-voltage battery. The second end is connected to the body ground. 8.如权利要求7所述的静态暗电流测试方法，其特征在于，所述待车辆的所有用电部件进入休眠状态后，断开车辆的蓄电池负极线束与所述低压蓄电池的负极端子之间的连接，将线圈的第一端连接车辆低压蓄电池的负极端子，将所述线圈的第二端连接车身地，包括：8 . The static dark current test method according to claim 7 , wherein after all the electric components of the vehicle to be put into a dormant state, disconnect the connection between the negative wire harness of the battery of the vehicle and the negative terminal of the low-voltage battery. 9 . Connect the first end of the coil to the negative terminal of the low-voltage battery of the vehicle, and connect the second end of the coil to the vehicle body ground, including: 待车辆的所有用电部件进入休眠状态后，将所述线圈的第一端连接所述低压蓄电池的负极端子，将所述线圈的第二端连接所述车身地；After all the electrical components of the vehicle enter the dormant state, connect the first end of the coil to the negative terminal of the low-voltage battery, and connect the second end of the coil to the ground of the vehicle body; 断开所述蓄电池负极线束与所述低压蓄电池的负极端子之间的连接。Disconnect the negative battery harness from the negative terminal of the low voltage battery. 9.如权利要求7所述的静态暗电流测试方法，其特征在于，所述对刻度尺上表示电流大小的刻度进行标定，包括：9. static dark current testing method as claimed in claim 7, is characterized in that, described on the scale that the scale representing current size is calibrated, comprises: 弹簧处于自然状态下，将指针指向所述刻度尺上的零刻度；With the spring in its natural state, point the pointer to zero on the scale; 根据公式
Figure FDA0003255331890000021
对所述刻度尺上表示电流大小的刻度进行标定，I为所述刻度尺上表示电流大小的刻度，δ为铁芯和铁块的气隙长度，N为所述线圈的匝数，μ为导磁率，a为修正系数，k为所述弹簧的劲度系数，x为所述指针指向的所述刻度尺上的刻度，s为磁极表面的总面积。According to the formula
Figure FDA0003255331890000021
The scale representing the magnitude of the current on the scale is calibrated, I is the scale representing the magnitude of the current on the scale, δ is the length of the air gap between the iron core and the iron block, N is the number of turns of the coil, and μ is the Magnetic permeability, a is the correction coefficient, k is the stiffness coefficient of the spring, x is the scale on the scale pointed by the pointer, and s is the total area of the magnetic pole surface. 10.如权利要求8所述的静态暗电流测试方法，所述待车辆的所有用电部件进入休眠状态后，将所述线圈的第一端连接所述低压蓄电池的负极端子，将所述线圈的第二端连接所述车身地，包括：10 . The static dark current test method according to claim 8 , after all the electrical components of the vehicle to be put into a dormant state, the first end of the coil is connected to the negative terminal of the low-voltage battery, and the coil is connected to the negative terminal of the low-voltage battery. 11 . The second end is connected to the body ground, including: 将第一接口连接所述低压蓄电池的负极端子，将第二接口连接所述车身地；Connect the first interface to the negative terminal of the low-voltage battery, and connect the second interface to the vehicle body ground; 待车辆的所有用电部件进入休眠状态后，将所述线圈的第一端连接所述第一接口，将所述线圈的第二端连接所述第二接口。After all the electrical components of the vehicle enter the sleep state, the first end of the coil is connected to the first interface, and the second end of the coil is connected to the second interface.
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