Conductive clamp for optimizing contact detection and emergency starting power supply

Abstract

The utility model discloses a conductive clamp for optimizing contact detection and an emergency starting power supply, and relates to the field of electric connectors. According to the invention, the second contact piece is fixedly arranged on one of the two clamping arms of the conductive clamp, and the third contact piece is arranged on one of the two clamping arms of the conductive clamp through the elastic part; the first contact piece, the second contact piece and the third contact piece subjected to elastic compression displacement are respectively in conductive contact with the lap joint terminal, so that the first contact piece and the second contact piece can be used for establishing stable power transmission with the lap joint terminal; and the third contact piece can be used for being in contact with the lap joint terminal and accurately reflecting the conductive contact state of the first contact piece and the lap joint terminal as well as the conductive contact state of the second contact piece and the lap joint terminal, so that the emergency starting power supply can give consideration to power transmission of equipment such as a motor or a storage battery to be started by the conductive clamp and contact state detection of the third contact piece to the conductive clamp.

Description

Technical Field

[0001] This invention relates to the field of electrical connectors, and more particularly to a conductive clamp for optimized contact detection and an emergency start-up power supply. Background Technology

[0002] The power systems of automobiles and other motorized equipment require a starter motor to provide power during startup, and the starter motor in turn needs to transmit power through the equipment's battery. Furthermore, the power consumed by the starter motor from the battery system at startup is 3-9 times the motor's peak power during steady-state operation. Therefore, it is evident that the power systems of automobiles and other motorized equipment have significant power requirements at startup.

[0003] However, the battery within the device can fail under various conditions. For example, the battery may fail in low-temperature environments (-20°C and below), due to aging and reduced power (cycle life exceeding 400 cycles), or due to prolonged inactivity leading to power decay. All of these can result in the inability to output the transient high current required for starting. While onboard chargers can replenish power in conventional solutions, they suffer from a 6-12 hour charging delay. Furthermore, removing and replacing integrated batteries is time-consuming and laborious, making replacement difficult in emergencies. Therefore, an emergency jump starter, which directly provides the instantaneous power for starting the motor, allows the starter motor to complete the engine start-up process, offering a better user experience.

[0004] However, in order to adapt to the connection terminals of different devices, emergency starting power supplies are usually supplied through contact with the device's contact terminals using conductive clamps, which has defects in electrical connection reliability:

[0005] (1) Contact interface contamination leads to abnormal contact resistance. For example, oxide layers generated at high temperatures, oil stains deposited over long-term use, rust and corrosion, etc., can easily cause high contact resistance between the conductive clamp and the overlapping terminals of the equipment.

[0006] (2) Voltage divider effect. When the contact resistance is too high, a series voltage divider will be formed at the contact point under the high current required for equipment startup, resulting in the effective output voltage of the equipment being lower than the startup threshold.

[0007] (3) Risk of thermal runaway. When the contact resistance is too high, the local high temperature at the contact point will cause damage to the equipment's lap terminals or conductive clamps themselves, which may generate sparks or even cause a fire.

[0008] Therefore, the effectiveness of an emergency start-up power supply is limited by the connection status between it and the equipment.

[0009] Therefore, there is a need for a device and method that can at least partially address one or more limitations of the prior art.

[0010] This background information is provided to disclose information that the applicant believes may be relevant to the present invention. It is not necessarily acknowledged, nor should it be construed, that any of the foregoing information constitutes prior art to the present invention. Summary of the Invention

[0011] To address the problems existing in the prior art, the main objective of this invention is to provide a conductive clamp and emergency starting power supply with optimized contact detection. By configuring additional detection contacts on the conductive clamp, the contact resistance between the clamp and the terminals of the device to be started, such as a motor or battery, can be detected. This prompts the user to improve the connection between the power supply and the device, ensuring the contact power supply performance of the conductive clamp and stably completing the starting and high current transmission tasks.

[0012] To achieve the above objectives, the present invention adopts the following technical solution:

[0013] In a first aspect, the present invention provides a conductive clamp for optimized contact detection, the conductive clamp comprising a first clamping arm and a second clamping arm hinged to each other, the first clamping arm comprising an insulating first housing at least disposed on the gripping side of the first clamping arm and a first contact element at least disposed on the jaw side of the first clamping arm, wherein the second clamping arm comprises an insulating second housing disposed on the gripping side of the second clamping arm, and a conductive second contact element and a third contact element at least disposed on the gripping side of the second clamping arm; wherein,

[0014] The second contact and the third contact are configured to be mutually insulated and isolated. The second contact is fixedly disposed on the second clamping arm, and the third contact is disposed on the second clamping arm through an elastic part, so that when the first clamping arm and the second clamping arm engage the overlapping terminal of the device, the first contact, the second contact and the third contact, which is compressed and displaced by the elastic part, respectively abut against the overlapping terminal.

[0015] The aforementioned conductive clamp does not specify the matching relationship between the second and third contacts and the first contact. Optionally, on one hand, the first and second contacts engage and match, serving as paired, mating contacts in the conductive clamp; while the third contact is an additional contact. The third contact is elastically disposed on the second clamping arm, located to one side of the second contact, and when the first and second contacts engage, the third contact is offset from the first contact. On the other hand, optionally, the first and third contacts engage and match, serving as paired, mating contacts in the conductive clamp; while the second contact, as an additional contact, is fixedly disposed on the second clamping arm. The third contact, mating with the first contact, is configured such that it is elastically disposed on the second clamping arm, the second contact is located to one side of the third contact, and when the first and third contacts engage, the second contact is offset from the first contact.

[0016] Preferably, the second contact member includes a second toothed plate extending along the hinge radial plane, and the third contact member includes a third toothed plate disposed on one side of the second toothed plate; or,

[0017] The second contact includes a second substrate and at least two second toothed plates disposed on the second substrate and extending along the hinge radial direction; the third contact includes a third substrate and two third toothed plates disposed on the third substrate, each corresponding to a toothed plate located inside the second toothed plate; or,

[0018] The second contact includes a second substrate, at least two second toothed plates disposed on the second substrate extending along the hinge radial surface direction, and a second toothed plate disposed on the second substrate away from the hinge side and disposed in the direction perpendicular to the hinge radial surface; the third contact includes a third substrate, and three third toothed plates disposed on the third substrate, respectively corresponding to the inner side of each of the second toothed plates.

[0019] Preferably, the first contact member includes a first substrate, at least two first toothed plates disposed on the first substrate extending along the hinge radial surface direction, and a first toothed plate disposed on the side of the first substrate away from the hinge and disposed along the hinge radial surface perpendicular direction.

[0020] The tooth tips of the first toothed plate extending along the hinge radial surface and the tooth tips of the second toothed plate extending along the hinge radial surface are opposite each other in the hinge circumferential direction.

[0021] The tooth crest of the first toothed plate, which is arranged perpendicular to the hinge radial plane, and the tooth groove of the second toothed plate, which is arranged perpendicular to the hinge radial plane, mesh with each other.

[0022] The tooth tip of the third tooth plate, which extends along the hinge radial plane, is located inside the tooth tip of the second tooth plate, which also extends along the hinge radial plane.

[0023] Preferably, one end of the elastic part is fixed relative to the second outer shell, and the other end of the elastic part is fixed relative to the third contact member;

[0024] When the third contact is only acted upon by the elastic part, the elastic part stretches elastically, and the top of the third contact is located above the top of the first contact.

[0025] When the third contact abuts against the lap terminal of the device, the elastic part is elastically compressed, and the third contact moves toward the direction of the second clamping arm until the lap terminal also abuts against the second contact.

[0026] Preferably, the second clamping arm further includes a limiting part, and the third contact member is movable between the two ends of the limiting part. One end of the limiting part is connected to the first housing, and the other end of the limiting part abuts against the third contact member, so that the elastic part is disposed between the second housing and the third contact member with a preset compression length.

[0027] Preferably, the first clamping arm further includes an insulating portion, which is disposed in abutment against the second contact member, and the third contact member and the insulating portion are separated by a gap when the third contact member is only subjected to the action of the elastic portion.

[0028] Preferably, the middle part of the first housing and the middle part of the second housing are connected by a hinge shaft, and a torsion spring is sleeved on the hinge shaft, with the two ends of the torsion spring abutting against the first clamping arm and the second clamping arm respectively.

[0029] The conductive clamp also includes a first conductive wire for power transmission and a second conductive wire for detecting conductivity; the first conductive wire is electrically connected to a first contact and / or a second contact, and the second conductive wire is electrically connected to a third contact.

[0030] Preferably, the first contact member is provided with a first hinge portion, and the second contact member is provided with a second hinge portion, wherein the first hinge portion and the second hinge portion are connected to each other and hinged on a hinge shaft.

[0031] Preferably, the first contact member is provided with a first extension portion extending toward the gripping side of the first clamping arm, and the second contact member is provided with a second extension portion extending toward the gripping side of the first clamping arm. The first extension portion and the second extension portion are electrically connected to each other through a third electrical wire, and the first electrical wire is electrically connected to one of the first extension portion and the second extension portion.

[0032] In a second aspect, the present invention provides an emergency start-up power supply, including the aforementioned optimized contact detection conductive clamp, characterized in that the conductive clamp is configured with a positive conductive clamp and a negative conductive clamp; wherein the positive conductive clamp is used to connect to the positive terminal of the device, and the negative conductive clamp is used to connect to the negative terminal of the device; further comprising:

[0033] The detection module is connected to the first and / or second contact of the positive conductive clamp and to the third contact of the positive conductive clamp to detect the impedance between the positive conductive clamp and the lap terminal of the positive electrode of the device; it is also connected to the first and / or second contact of the negative conductive clamp and to the third contact of the negative conductive clamp to detect the impedance between the negative conductive clamp and the lap terminal of the negative electrode of the device.

[0034] A switch is connected between the positive conductive clamp and the battery module or between the negative conductive clamp and the battery module;

[0035] The control module is electrically connected to the detection module to obtain the impedance between the positive conductive clamp and the positive terminal of the device and the impedance between the negative conductive clamp and the negative terminal of the device; it is also connected to the control terminal of the switch to control the battery module to supply power to the positive and negative conductive clamps.

[0036] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0037] (1) The conductive clamp of the present invention is composed of a first clamping arm and a second clamping arm that are hinged to each other. The second clamping arm includes a second contact and a third contact. The second contact is fixedly disposed on the second clamping arm, while the third contact is disposed on the second clamping arm through an elastic part. When the first clamping arm and the second clamping arm engage the overlapping terminal of the device, the first contact and the third contact first abut against the overlapping terminal. When the jaws of the first clamping arm and the second clamping arm move closer together, the third contact moves toward the direction of the second contact in an elastic compression manner, so that the second contact also abuts against the overlapping terminal. Finally, the first contact, the second contact and the third contact after elastic compression displacement respectively form conductive contact with the overlapping terminal.

[0038] (2) In the application of the conductive clamp of the present invention, the first contact and the second contact can be used for power transmission, while the third contact can be used to detect the conductive contact state between the first contact and the second contact and the lap terminal. The first contact and the second contact are both fixedly connected, so that they are tightly abutted against the lap terminal under the clamping force of the conductive clamp. The third contact is connected by an elastic part, so as to ensure that the contact with the lap terminal can accurately reflect the conductive contact state between the first contact and the second contact and the lap terminal.

[0039] (3) The conductive clamp of the present invention is applied to an emergency starting power supply. It can take into account both the power transmission of the conductive clamp to the device to be started or the battery and the contact status detection of the third contact to the conductive clamp, so as to ensure the contact power supply performance of the conductive clamp and stably complete the starting and high current transmission tasks.

[0040] (4) The conductive clamp of the present invention further includes three first toothed plates and three second toothed plates respectively provided on the first contact and the second contact, thereby realizing multi-directional power supply contact connection. Correspondingly, the second contact is also provided with three third toothed plates, thereby adapting to the detection of power supply contact status in different directions.

[0041] (5) The conductive clamp of the present invention further comprises a first toothed plate provided in a manner extending along the hinge radial surface, wherein the tooth tip of the first toothed plate is relative to the second toothed plate provided in a manner extending along the hinge radial surface in the hinge circumferential direction, thereby enabling the first contact member and the second contact member to have four tooth tips in contact with the lap terminal; at the same time, the tooth tip of the third toothed plate provided in the hinge radial surface direction is located inside the tooth tip of the second toothed plate provided in the hinge radial surface direction, thereby ensuring that two adjacent tooth tips of the third toothed plate are in contact with the lap terminal.

[0042] (6) The conductive clamp of the present invention further includes a limiting part, which allows the third contact to be disposed displaceable in the direction of approaching and away from the second insulating shell. At the same time, the limiting part allows the elastic part to be in a pre-compressed state, thereby increasing the contact stress between the third contact and the lap terminal.

[0043] (7) The conductive clamp of the present invention is further provided with an insulating part, which is attached to the second contact and maintains a gap with the third contact, thereby ensuring that the second contact and the third contact are mutually insulated and isolated, and giving the third contact a larger range of motion.

[0044] The invention will now be further described with reference to the accompanying drawings. Attached Figure Description

[0045] Figure 1 This is a three-dimensional structural schematic diagram of a conductive clamp for optimized contact detection according to an embodiment of the present invention;

[0046] Figure 2 This is a front cross-sectional view of a conductive clamp for optimized contact detection according to an embodiment of the present invention.

[0047] Figure 3 Embodiments of the present invention Figure 2 A partially enlarged front view sectional structural schematic diagram;

[0048] Figure 4 This is a schematic diagram of the component dispersion of a conductive clamp for optimized contact detection according to an embodiment of the present invention.

[0049] Figure 5 This is a partial side cross-sectional view of the first state of a conductive clamp for optimized contact detection according to an embodiment of the present invention.

[0050] Figure 6 This is a side view partial cross-sectional structural diagram of the second state of a conductive clamp for optimized contact detection according to an embodiment of the present invention.

[0051] Figure 7 This is a schematic diagram of the circuit structure of an emergency start-up power supply according to an embodiment of the present invention. Detailed Implementation

[0052] To better illustrate the objectives, technical solutions, and advantages of the present invention, the specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0053] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0054] It should be noted that when a component / part is referred to as being "set on" another component / part, it can be directly set on the other component / part or there may be an intervening component / part. When a component / part is referred to as being "connected / joined" to another component / part, it can be directly connected / joined to the other component / part or there may be an intervening component / part. The term "connected / joined" as used herein can include mechanical physical connections / joinings. The term "including / comprises" as used herein refers to the presence of a feature, step, or component / part, but does not exclude the presence or addition of one or more other features, steps, or components / parts. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. Furthermore, in the description of this application, the terms "first," "second," etc., are used for descriptive purposes and to distinguish similar objects only; there is no order between them, nor should they be construed as indicating or implying relative importance. Additionally, in the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0056] The device 900 disclosed herein includes a starter motor and an on-board battery as non-limiting examples. The lap terminal 901 of the device 900 includes, as a non-limiting example, an electrical connection component that can be clamped by a conductive clamp 100 and form a contact-type conductive connection. A user can use the energy provided by an emergency jump starter 600 to start the device 900, typically when the device 900 or the battery cannot provide sufficient energy to start the device 900.

[0057] In one embodiment of a conductive clamp according to the prior art, the conductive clamp includes a first clamping arm, a second clamping arm, a hinge shaft, a torsion spring, and an electrical conductor. The middle portion of the second clamping arm is hinged to the first clamping arm via the hinge shaft. A torsion spring is sleeved on the hinge shaft, with its two ends abutting against the first and second clamping arms, respectively. In use, the user manipulates the gripping sides of the first and second clamping arms to rotate closer together, causing the jaws of the first and second clamping arms to move away from rotation, accumulating elastic potential energy in the torsion spring. When the user releases the gripping sides, the torsion spring releases its elastic potential energy, causing the jaws of the first and second clamping arms to rotate closer together. The conductive teeth on the jaws clamp the overlapping terminals, thereby forming a conductive contact connection. The electrical conductor is electrically connected to the conductive teeth structure of one of the clamping arms, thereby supplying power.

[0058] If the conductive clamp is equipped with additional detection contacts, the contact resistance between the first and / or second clamping arms and the lap terminals of the device can be detected, thus reflecting the contact connection status between the conductive clamp and the lap terminals. If poor contact is detected, the user is prompted to adjust the contact status between the conductive clamp and the lap terminals. To complete the contact resistance detection, while the first and / or second clamping arms are in contact with the lap terminals of the device, the additional detection contacts also need to be in contact with those lap terminals. If the conductive clamp is manipulated to ensure good contact between the detection contacts and the lap terminals, it can easily lead to poor contact between the first and / or second clamping arms and the lap terminals, resulting in unstable conductivity. Conversely, if the conductive clamp is manipulated to ensure good contact between the first and / or second clamping arms, it can easily lead to poor contact between the detection contacts and the lap terminals, making the contact resistance unable to reflect the contact connection status between the conductive clamp and the lap terminals.

[0059] like Figures 1 to 5 The diagram shows an optimized contact detection conductive clamp 100 according to an embodiment of the present invention. To address the issue of balancing power transmission contact and contact detection, reference is made to... Figures 1 to 3The conductive clamp 100 includes a first clamping arm 101, a second clamping arm 102, a hinge shaft 103, and a torsion spring 104. On one hand, the first clamping arm 101 includes a first insulating shell 120 and a first contact 110. The first contact 110 is used for conduction. The first contact 110 is fixedly connected to the first insulating shell 120 and is disposed on the jaw side of the first clamping arm 101. The first insulating shell 120 is used for insulation and is disposed on the gripping side of the first clamping arm 101, covering the first contact 110 on the jaw side. On the other hand, the second clamping arm 102 includes a second insulating shell 220, a second contact 210, and a third contact 310. The second insulating shell 220 is used for insulation and is disposed on the gripping side of the second clamping arm 102, covering the second contact 210 on the jaw side. The second contact 210 is used for conduction. The second contact 210 is fixedly connected to the second insulating shell 220 and is disposed on the jaw side of the second clamping arm 102. The third contact 310 is also used for conducting electricity. The second contact 210 is disposed on the second insulating housing 220 via the elastic part 410 and is disposed on the jaw side of the second clamping arm 102.

[0060] The second contact 210 and the third contact 310 are configured to be mutually insulated. This mutual insulation ensures that power output and contact detection are independent, guaranteeing that contact detection accurately reflects the contact state. To achieve this insulation, a gap is maintained between the second and third contacts when the third contact 310 is stationary. This gap also remains present during the displacement of the third contact 310 due to deformation of the elastic portion 410.

[0061] refer to Figures 1 to 3 In this embodiment, the first contact 110 and the second contact 210 engage and match, serving as a pair of mating contacts in the conductive clamp 100 for power transmission. Correspondingly, the third contact 310 is an additional contact used for contact detection. The third contact 310 is disposed on the second clamping arm 102 via an elastic portion 410. The third contact 310 is located inside or outside the second contact 210 in the hinge radial direction. When the first contact 110 engages with the second contact 210, the third contact 310 is misaligned with the first contact 110.

[0062] When the third contact 310 is only acted upon by the elastic portion 410, the top of the third contact 310 is positioned above the top of the second contact 210. Therefore, when the first clamping arm 101 and the second clamping arm 102 engage the overlapping terminal 901 of the device 900, the tops of the first contact 110 and the third contact 310 first abut against the sides of the overlapping terminal 901. Simultaneously, under the compressive deformation of the elastic portion 410, the third contact 310 elastically displaces towards the second contact 210, and the overlapping terminal 901 also elastically displaces towards the second contact 210. Finally, the first contact 110, the second contact 210, and the third contact 310 abut against the overlapping terminal 901 of the device 900. Furthermore, the third contact 310 contacts the overlapping terminal 901 through the elastic pressure of the elastic portion 410, ensuring contact stability. The first contact 110 and the second contact 210 are fixedly disposed on the second clamping arm 102 and contact the lap terminal 901 by the elastic force of the torsion spring 104 in the conductive clamp 100. It can be understood that the first contact 110 can be used for power transmission. The second contact 210 and the third contact 310 can also be configured such that the second contact 210 is used for contact detection, while the third contact 310 is used for power transmission.

[0063] As can be seen, this disclosure achieves conductive contact between the first contact 110, the second contact 210, and the third contact 310 through the elastic part 410 by fixing the second contact 210 on the second clamping arm 102. This allows the first contact 110, the second contact 210, and the third contact 310, which undergoes elastic compression displacement, to form conductive contact with the lap terminal 901. This balances the power transmission function and the contact status detection function of the conductive clamp 100, enabling accurate detection of the contact resistance between the clamp and the lap terminal 901 of the device 900 to be started, such as the motor or battery. It also prompts the user to improve the connection status between the power supply and the device 900, ensuring that the contact power supply of the conductive clamp 100 can stably and reliably complete the starting and high current transmission tasks.

[0064] In another embodiment of this disclosure (not shown), it can be understood that the first contact 110 and the third contact 310 engage and match as a pair of mating contacts in the conductive clamp 100 for power transmission. The third contact 310 is configured to be disposed on the second clamping arm 102 via an elastic portion 410. The second contact 210 is an additional contact. The second contact 210 is fixed to the second clamping arm 102 and is used for contact detection. The second contact 210 is located on one side of the third contact 310, inside or outside in the hinge radial direction, and when the first contact 110 and the third contact 310 engage, the second contact 210 is misaligned with the first contact 110.

[0065] When the first clamping arm 101 and the second clamping arm 102 are open and the third contact 310 is only acted upon by the elastic part 410, the top of the third contact 310 is located above the top of the second contact 210. Therefore, when the first clamping arm 101 and the second clamping arm 102 engage the overlapping terminal 901 of the device 900, the first contact 110 and the third contact 310 first abut against both sides of the overlapping terminal 901. Simultaneously, under the compression deformation of the elastic part 410, the third contact 310 elastically displaces towards the second contact 210, and the overlapping terminal 901 also elastically displaces towards the second contact 210. Finally, the first contact 110, the second contact 210, and the third contact 310 abut against the overlapping terminal 901 of the device 900, thereby achieving both power transmission from the conductive clamp 100 to the device 900 (such as a starter motor or battery) and detection of the contact status of the third contact 310 with the conductive clamp 100.

[0066] Specifically, in this embodiment, refer to... Figures 2 to 4 Typically, the first contact 110 includes a first substrate 111 and a first toothed plate 112 disposed on the first substrate 111. The first contact 110 is fixed to the first insulating housing 120 via the first substrate 111 and by means of bolts 115 and 116. The second contact 210 includes a second substrate 211 and a second toothed plate 212 disposed on the second substrate 211. The second contact 210 is fixed to the second insulating housing 220 via the second substrate 211 and by means of bolts 215 and 423. The third contact 310 includes a third substrate 311 and a third toothed plate 312 disposed on the third substrate 311. The third substrate 311 is disposed on the second insulating housing 220 via an elastic portion 410, and the third substrate 311 is located on the second substrate 211.

[0067] To improve the performance of the power supply contact, the second substrate 211 in the second contact member 210 is provided with three second toothed plates 212. Two of the second toothed plates 212 are respectively disposed on both sides of the second substrate 211, extending parallel to each other along the hinge radial plane. The remaining second toothed plates 212 are disposed on the side of the second substrate 211 away from the hinge, extending perpendicularly to the hinge radial plane. Thus, the conductive clamp 100 can make power supply contact connections from the front, back, and end directions.

[0068] To accommodate power supply contacts in different directions, the third substrate 311 is also provided with three third toothed plates 312. Two of the third toothed plates 312 are respectively disposed on both sides of the third substrate 311, extending parallel to each other along the hinge radial plane. The remaining third toothed plates 312 are disposed on the side of the third substrate 311 away from the hinge, extending perpendicularly to the hinge radial plane. The width of the third substrate 311 is smaller than the width of the first substrate 111, and there is a preset distance between the hinged distal end of the third substrate 311 and the hinged distal end of the second substrate 211. In other words, the three third toothed plates 312 on the third substrate 311 are respectively located inside the three first toothed plates 112 on the first substrate 111. Thus, when the user connects the conductive clamp 100 to the lap terminal 901 from any direction, the third contact 310 can make contact with the lap terminal 901.

[0069] It is understood that, in other embodiments according to this disclosure, the first substrate 111 may be provided with only one row of first toothed plates 112 extending along the hinge radial surface and in parallel directions, or may be provided with only one row of first toothed plates 112 extending perpendicular to the hinge radial surface. Accordingly, the number and position of the third substrate 311 correspond to the first toothed plates 112 to realize the contact resistance detection function.

[0070] To improve the performance of power supply contacts, refer to Figure 1 and Figure 2 In the first contact 110, the number and position of the first toothed plates 112 are matched with the number and position of the second toothed plates 212. Specifically, the first substrate 111 is also provided with three first toothed plates 112, two of which are respectively provided on both sides of the first substrate 111, extending along the hinge radial surface and in parallel directions, while the remaining first toothed plates 112 are provided on the side of the first substrate 111 away from the hinge, extending perpendicularly to the hinge radial surface. The width of the first substrate 111 is the same as the width of the second substrate 211, and the hinged distal ends of the first substrate 111 and the second substrate 211 are positioned relative to their respective clamping arms. Thus, when the first clamping arm 101 and the second clamping arm 102 are engaged, the first toothed plates 112 and the second toothed plates 212 can respectively contact and connect with the overlapping terminal 901 in the front, back, and end directions of the conductive clamp 100, forming a high contact stress on the overlapping terminal 901.

[0071] It is worth noting that the first toothed plate 112, which extends perpendicularly to the hinge radial plane, engages with the second toothed plate 212, which also extends perpendicularly to the hinge radial plane. The tooth tips of the first toothed plate 112, which extends along the hinge radial plane, relative to the second toothed plate 212, which also extends along the hinge radial plane, ensure that adjacent tooth tips of the first toothed plate 112 and adjacent tooth tips of the second toothed plate 212 respectively contact the lap terminal 901, thereby improving the contact effect and enhancing conductivity.

[0072] refer to Figures 2 to 4 In this embodiment, the second clamping arm 102 further includes a limiting part 430 and an insulating part 420.

[0073] Specifically, in this embodiment, the second clamping arm 102 is provided with a limiting portion 430 to balance the stability and flexibility of the elastic displacement of the third contact member 310. The third substrate 311 has a through hole for passing through the limiting portion 430. The outer edge dimension of the through hole in the third substrate 311 is larger than the outer edge dimension of the post portion of the limiting portion 430, allowing the third contact member 310 to move relative to the limiting portion 430. For example, if the third substrate 311 has a circular through hole and the post portion of the limiting portion 430 is a circular post, the diameter of the through hole in the third substrate 311 is larger than the diameter of the post portion of the limiting portion 430. The lower end of the limiting portion 430 passes through the through holes on the insulating substrate 421 and the first substrate 111 in a non-contact manner and is fixedly connected to the second insulating shell 220 by a thread. The outer edge dimension of the upper end of the limiting part 430 is larger than the outer edge dimension of the through hole of the third substrate 311, so as to abut against the upper surface of the third substrate 311, thereby constraining the third contact member 310 to disengage from the limiting part 430.

[0074] Under the action of the limiting part 430, the third contact 310 is constrained between the upper end of the limiting part 430 and the insulating part 420. At the same time, the elastic part 410 can be pre-compressed to a certain length, thereby increasing the contact stress and decreasing the contact resistance when the third contact 310 makes conductive contact with the lap terminal 901.

[0075] refer to Figures 2 to 4In this embodiment, the elastic part 410 is specifically configured as a helical spring. In other embodiments, the elastic part 410 may be configured as a spring sheet, a torsion spring 104, a rubber pad, or other components capable of elastic deformation. In this embodiment, the elastic part 410 is sleeved within the post portion of the limiting part 430. One end of the elastic part 410 abuts against the lower surface of the third substrate 311, and the other end of the elastic part 410 passes through the through hole on the insulating substrate 421 and the through hole on the second substrate 211, and abuts against the second insulating shell 220. When the third contact 310 moves closer to the second insulating shell 220, the elastic part 410 is compressed, causing the top of the third toothed plate 312 and the top of the second toothed plate 212 to abut against the overlapping terminal 901, respectively. When the elastic part 410 extends, the third contact 310 approaches and abuts against the upper end of the limiting part 430.

[0076] refer to Figures 2 to 4 Specifically, in this embodiment, the second clamping arm 102 is provided with an insulating portion 420 to ensure the stability of the insulation between the second contact 210 and the third contact 310. The insulating portion 420 includes an insulating substrate 421 and an insulating baffle 422 disposed on the insulating substrate 421. The insulating substrate 421 and the second contact 210 are fixedly connected to the second insulating shell 220 by bolts 423. To accommodate the number and position of the third toothed plates 312 of the third contact 310, two insulating baffles 422 are provided, which are disposed in contact with the inner side of the first toothed plate 112 on the side. The top of the insulating baffle 422 is not higher than the top of the first toothed plate 112 to avoid affecting the meshing contact of the first toothed plate 112. When the third contact 310 is only acted upon by the elastic part 410, the third substrate 311 is disposed above the insulating substrate 421 at a certain interval, and the third toothed plate 312 is disposed on the inner side of the insulating baffle 422 at a certain interval, thereby giving the third contact 310 more room to move and avoiding obstructing the contact between the second contact 210 and the third contact 310 and the lap terminal 901.

[0077] It is understood that the outer edge size (e.g., diameter) of the through hole on the insulating substrate 421 is smaller than the outer edge size (e.g., diameter) of the through hole on the first substrate 111, thereby avoiding the helical spring, which is usually made of metal and serves as the elastic part 410, from making conductive contact with the third contact 310 and the second contact 210.

[0078] In this embodiment, two limiting portions 430 are further provided. Correspondingly, two through holes are also provided in the third substrate 311, with at least two limiting portions 430. One of the limiting portions 430 is located near the hinge of the clamping arm, while the other limiting portion 430 is located away from the hinge of the clamping arm. Two elastic portions 410 are also provided, each sleeved within one of the limiting portions 430. Thus, the third contact 310 is limited at two locations and elastically supported at both locations, thereby facilitating conductive contact between the third contact 310 and the lap terminal 901. It can be understood that the elastic displacement of the third contact 310 can be vertical translation, horizontal translation or oscillation, or front-back translation or oscillation, thereby facilitating conductive contact of the third contact 310.

[0079] refer to Figures 2 to 4 According to the aforementioned embodiment, the two adjacent tooth tips of the first toothed plate 112 and the two adjacent tooth tips of the second toothed plate 212 respectively contact the overlapping terminal 901. In this embodiment, the third substrate 311 is provided with a third toothed plate 312 extending along the hinge radial surface, and a third toothed plate 312 disposed perpendicular to the hinge radial surface. Simultaneously, the tooth tips of the third toothed plate 312 extending along the hinge radial surface are located inside the tooth tips of the second toothed plate 212 extending along the hinge radial surface. Under the action of the two elastic parts 410 and the limiting part 430, the third substrate 311 can swing and translate relative to the two limiting parts 430, so that the overlapping terminal 901 contacts the two adjacent tooth tips of the first tooth plate 112 and the two adjacent tooth tips of the second tooth plate 212. At the same time, after the third substrate 311 translates and swings up and down, back and forth and left and right, the overlapping terminal 901 also contacts the two adjacent tooth tips of the third tooth plate 312, realizing that the first contact 110, the second contact 210 and the third contact 310 have multiple points of contact, so that the power transmission contact and the detection contact have better conductivity.

[0080] refer to Figures 2 to 4 In this embodiment, as a more complete form, the conductive clamp 100 further includes a first electrical conductor 530 and a second electrical conductor 540. One end of the first electrical conductor 530 is electrically connected to the first contact member 110, and the other end is used to electrically connect to the emergency start-up power supply 600. Thus, when the conductive clamp 100 is connected to the lap terminal 901 of the device 900, the emergency start-up power supply 600 transmits power to the device 900 through the conductive clamp 100. The third substrate 311 has a welding groove 313413 near the hinge shaft 103. One end of the second electrical conductor 540 is welded to the welding groove 313413 of the third contact member 310, and the other end is used to electrically connect to the emergency start-up power supply 600, thereby providing a detection signal to the emergency start-up power supply 600.

[0081] refer to Figures 2 to 4 To improve the conductivity of the power supply contacts of the conductive clamp 100, this embodiment specifically includes a first insulating shell 120 and a second insulating shell 220 hinged to a hinge shaft 103. The second contact 210 has a first hinge portion 113 on the gripping side near the second clamping arm 102, and a second hinge portion 213 on the gripping side near the first clamping arm 101. The first hinge portion 113 and the second hinge portion 213 are connected and hinged to each other on the hinge shaft 103. Thus, the first contact 110 and the second contact 210 can conduct electricity through the first hinge portion 113 while rotating relative to each other. This forms an electrical connection between the second contact 210, the first contact 110, and the first electrical conductor 530 during operation, and electrically connects each contact point of the first toothed plate 112 on the second contact 210 to the first electrical conductor 530.

[0082] refer to Figures 2 to 4 To improve the power supply contact conductivity of the conductive clamp 100, in this embodiment, the second contact member 210 is specifically provided with a first extension portion 114 extending towards the gripping side of the second clamping arm 102. Specifically, the first extension portion 114 is formed by extending from the first substrate 111, and the second extension portion 214 is formed by extending from the second substrate 211. A bolt 215 passes through a through hole in the welding electrical connector 580 and a through hole in the first extension portion 114, and is threaded onto the second insulating shell 220. Thus, the first extension portion 114 is electrically connected to the welding electrical connector 580. A bolt 116 passes through a through hole in the welding electrical connector 570, a through hole in the welding electrical connector 560, and a through hole in the second extension portion 214, and is threaded onto the first insulating shell 120. Thus, the second extension portion 214, the welding electrical connector 560, and the welding electrical connector 570 are electrically connected. The conductive clamp 100 also includes a third electrical conductor 550. One end of the third electrical conductor 550 is welded to a welding electrical connector 580, and the other end is welded to a welding electrical connector 570. Thus, the third electrical conductor 550 can electrically connect to the first extension 114 and the second extension 214, and further electrically connect to the first contact 110 and the second contact 210. The first electrical conductor 530 is welded to a welding electrical connector 560, and in conjunction with the third electrical conductor 550, the first electrical conductor 530 is simultaneously electrically connected to the first contact 110 and the second contact 210, and possesses good conductivity.

[0083] like Figure 5 and Figure 6The image shows an example of a process by which a conductive clamp 100 is used to connect a lap terminal 901 of a device 900 according to an embodiment of the present invention.

[0084] refer to Figure 5 Under the action of the torsion spring 104, the gripping sides of the first clamping arm 101 and the second clamping arm 102 rotate about the hinge axis 103 in a relatively open direction, while the jaws of the first clamping arm 101 and the jaws of the second clamping arm 102 rotate about the hinge axis 103 in a relatively closed direction. The first toothed plate 112 at the end of the second contact member 210 abuts against the second toothed plate 212 at the end of the first contact member 110. At the same time, under the action of the elastic part 410, the upper surface of the third base plate 311 of the third contact member 310 abuts against and is fixed to the upper end of the limiting part 430. With the inner bottom of the second insulating shell 220 as a reference, the tooth tip of the third toothed plate 312 is higher than the tooth tip of the first toothed plate 112.

[0085] refer to Figure 6 Therefore, under the action of external force, the gripping side of the first clamping arm 101 and the gripping side of the second clamping arm 102 rotate about the hinge axis 103 in a relatively closing direction, and the jaws of the first clamping arm 101 and the jaws of the second clamping arm 102 rotate about the hinge axis 103 in a relatively opening direction, thereby opening to a state where they can engage the overlapping terminal 901 of the device 900. At the same time, the torsion spring 104 is rotated and compressed, and accumulates elastic potential energy. After the clamping operation on the conductive clamp 100 is released, the first toothed plate 112 on the first contact member 110 and the third toothed plate 312 on the third contact member 310 can respectively engage with the overlapping terminal 901 with adjacent tooth tips. At the same time, the contact point of the third contact member 310 will be subjected to the force applied by the overlapping terminal 901, and will swing and move closer to the second contact member 210, so that the overlapping terminal 901 also engages with the first toothed plate 112 on the second contact member 210 with adjacent tooth tips. Whether the third contact 310 is stationary or in motion, the insulating portion 420 can prevent contact between the second contact 210 and the third contact 310. The first contact 110 and the second contact 210 contact the lap terminal 901 with four teeth, and the third contact 310 can also contact the lap terminal 901 with two teeth after displacement, thereby keeping the conductive and detection contact connection stable.

[0086] like Figure 7The diagram shows an emergency start-up power supply 600 according to an embodiment of the present invention. The emergency start-up power supply 600 includes a battery module 601, a detection module 602, a control module 603, and a switch 604. The emergency start-up power supply 600 also includes two conductive clamps 100 from the aforementioned embodiments, representing a positive terminal and a negative terminal, respectively. Specifically, the battery module 601 has a line 615 representing the positive terminal and a line 610 representing the negative terminal. Line 615 is connected to one side of the switch 604, while the other side of the switch 604 is connected to line 655. Line 655 is connected to the first electrical conductor 530 of the positive conductive clamp 100+. The control module 603 is connected to the control terminal of the switch 604 via line 660. Line 610 is connected to the first electrical conductor 530 of the negative conductive clamp 100-. Line 635, which is connected to the detection module 602, is connected to line 655, thereby enabling the detection module 602 to acquire a detection signal from the first electrical conductor 530 of the positive terminal. Line 610, connected to detection module 602, is connected to line 630, thereby enabling detection module 602 to acquire the detection signal from the first conductor 530 of the negative electrode. Line 645, connected to detection module 602, is connected to the second conductor 540 of the positive electrode conductive clamp 100+. Line 640, connected to detection module 602, is connected to the second conductor 540 of the negative electrode conductive clamp 100-. As mentioned above, the first conductor 530 is connected to the first contact 110 and the second contact 210. The second conductor 540 is connected to the third contact 310. Detection module 602 is connected to line 655 via line 670, thereby acquiring operating power and detection circuit current.

[0087] When the emergency start-up power supply 600 is in use, the positive conductive clamp 100+ is connected to the positive conductive terminal of the device 900, and the negative conductive clamp 100- is connected to the negative conductive terminal of the device 900. The control module 603 controls the switch 604 to conduct, and the positive terminal of the battery module 601 is connected to the positive terminal of the device 900 via line 615, switch 604, line 655, the first positive conductor 530, the first positive contact 110 and the second positive contact 210, and the positive terminal 901. Similarly, the negative terminal of the battery module 601 is connected to the negative terminal of the device 900 via line 610, the first negative conductor 530, the first negative contact 110 and the second negative contact 210, and the negative terminal 901. Thus, a power supply circuit is formed between the battery module 601 and the device 900.

[0088] In one embodiment, detection module 602 can detect the loop current I_1 via line 670. Additionally, detection module 602 can detect the voltage V1+ between the first contact 110 and the second contact 210 of the positive electrode via line 635. Detection module 602 can detect the voltage V2+ between the third contact 310 and the lap terminal 901 via line 645, thereby determining the contact voltage between the first contact 110 and the second contact 210 of the positive electrode and the lap terminal 901. Therefore, by dividing the difference between voltage V1+ and voltage V2+ by the loop current I_1, the contact resistance between the first contact 110 and the second contact 210 of the positive electrode and the lap terminal 901 of the positive electrode can be obtained. Similarly, detection module 602 can measure the contact resistance between the first contact 110 and the second contact 210 of the negative electrode and the lap terminal 901 of the negative electrode via lines 640 and 630. Due to the stable contact between the third contact 310 and the lap terminal 901, the shunt current used for voltage detection can be stably collected. At the same time, due to the stable contact between the first contact 110 and the second contact 210 and the lap terminal 901, the emergency start power supply 600 stably supplies power to the device 900, and the detection of the loop current I is stable.

[0089] In one embodiment, the detection module 602 outputs power through lines 635 and 645 to form a loop consisting of line 635, the first positive conductor 530, the first positive contact 110 and the second positive contact 210, the positive terminal 901, the third positive contact 310, the second positive conductor 540, and line 645. Furthermore, by detecting the loop current I_2 and the loop voltage V_2, the contact circuit between the first positive contact 110 and the second positive contact 210 and the positive terminal 901 is obtained. Similarly, the detection module 602 outputs power through lines 640 and 630 to form a loop consisting of line 630, the first conductor 530 of the negative electrode, the first contact 110 and the second contact 210 of the negative electrode, the lap terminal 901 of the negative electrode, the third contact 310 of the negative electrode, the second conductor 540 of the negative electrode, and line 640. Furthermore, by detecting the loop current I_2 and the loop voltage V_2, the contact circuit between the first contact 110 and the second contact 210 of the negative electrode and the lap terminal 901 of the negative electrode is obtained.

[0090] As can be seen, by configuring additional detection contacts on the conductive clamp 100, the present invention can detect the contact resistance between the clamp and the lap terminal 901 of the device 900 such as the motor or battery to be started, thereby prompting the user to improve the connection status between the power supply and the device 900, so as to ensure that the contact power supply of the conductive clamp 100 can stably and reliably complete the starting and high current transmission tasks.

[0091] The above embodiments mainly describe the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed.

Claims

1. A conductive clamp for optimized contact detection, the conductive clamp (100) comprising a first clamping arm (101) and a second clamping arm (102) hinged to each other, the first clamping arm (101) comprising at least a first insulating housing (120) disposed on the gripping side of the first clamping arm (101) and a first contact element (110) disposed at least on the jaw side of the first clamping arm (101), characterized in that, The second clamping arm (102) includes a second insulating housing (220) disposed on the gripping side of the second clamping arm (102), and at least a second contact (210) and a third contact (310) disposed on the gripping side of the second clamping arm (102) for conducting electricity; wherein, The second contact (210) and the third contact (310) are configured to be mutually insulated and isolated. The second contact (210) is fixedly disposed on the second clamping arm (102). The third contact (310) is disposed on the second clamping arm (102) through an elastic part (410) so that when the first clamping arm (101) and the second clamping arm (102) engage the overlapping terminal (901) of the device (900), the first contact (110), the second contact (210) and the third contact (310) compressed and displaced by the elastic part (410) respectively abut against the overlapping terminal (901).

2. A conductive clamp for optimized contact detection according to claim 1, characterized in that, The second contact (210) includes a second toothed plate (212) extending along the hinge radial plane, and the third contact (310) includes a third toothed plate (312) disposed on one side of the second toothed plate (212); or, The second contact (210) includes a second substrate (211) and at least two second toothed plates (212) disposed on the second substrate (211) and extending along the hinge radial direction; the third contact (310) includes a third substrate (311) and two third toothed plates (312) disposed on the third substrate (311) respectively located inside the second toothed plates (212); or, The second contact (210) includes a second substrate (211), at least two second toothed plates (212) disposed on the second substrate (211) extending along the hinge radial direction, and a second toothed plate (212) disposed on the side of the second substrate (211) away from the hinge and disposed in the direction perpendicular to the hinge radial direction; the third contact (310) includes a third substrate (311) and three third toothed plates (312) disposed on the third substrate (311) respectively corresponding to the inner side of each second toothed plate (212).

3. A conductive clamp to optimize contact detection according to claim 2, characterized in that, The first contact (110) includes a first substrate (111), at least two first toothed plates (112) disposed on the first substrate (111) extending along the hinge radial direction, and a first toothed plate (112) disposed on the side of the first substrate (111) away from the hinge and disposed along the vertical direction of the hinge radial direction. The tooth tips of the first toothed plate (112) extending along the hinge radial surface and the tooth tips of the second toothed plate (212) extending along the hinge radial surface are opposite each other in the hinge circumferential direction. The tooth tip of the first tooth plate (112) arranged in the vertical direction along the hinge radial plane and the tooth groove of the second tooth plate (212) arranged in the vertical direction along the hinge radial plane mesh with each other. The tooth tip of the third tooth plate (312) extending along the hinge radial plane is located inside the tooth tip of the second tooth plate (212) extending along the hinge radial plane.

4. The electrically conductive clamp of claim 1, wherein, One end of the elastic part (410) is fixed relative to the second outer shell (220), and the other end of the elastic part (410) is fixed relative to the third contact member (310); When the third contact (310) is only acted upon by the elastic part (410), the elastic part (410) stretches elastically, and the top of the third contact (310) is located above the top of the first contact (110). When the third contact (310) abuts against the overlapping terminal (901) of the device (900), the elastic part (410) is elastically compressed, and the third contact (310) is displaced in a direction close to the second clamping arm (102) until the overlapping terminal (901) also abuts against the second contact (210).

5. The electrically conductive clamp of optimal contact detection of claim 1, wherein, The second clamping arm (102) further includes a limiting part (430), and the third contact member (310) is movable between the two ends of the limiting part (430). One end of the limiting part (430) is connected to the first housing (120), and the other end of the limiting part (430) abuts against the third contact member (310) so that the elastic part (410) is disposed between the second housing (220) and the third contact member (310) with a preset compression length.

6. A conductive clamp to optimize contact detection according to claim 1, wherein, The first clamping arm (101) further includes an insulating part (420), which is disposed in abutment against the second contact (210). When the third contact (310) is only subjected to the action of the elastic part (410), the third contact (310) and the insulating part (420) are separated by a gap.

7. A conductive clamp for optimized contact detection according to claim 1, characterized in that, The middle part of the first outer shell (120) and the middle part of the second outer shell (220) are connected by a hinge shaft (103). A torsion spring (104) is sleeved on the hinge shaft (103), and the two ends of the torsion spring (104) abut against the first clamping arm (101) and the second clamping arm (102) respectively. The conductive clamp (100) further includes a first conductive wire (530) for power transmission and a second conductive wire (540) for detecting conductivity; the first conductive wire (530) is electrically connected to a first contact (110) and / or a second contact (210), and the second conductive wire (540) is electrically connected to a third contact (310).

8. A conductive clamp for optimized contact detection according to claim 7, characterized in that, The first contact member (110) is provided with a first hinge portion (113), and the second contact member (210) is provided with a second hinge portion (213). The first hinge portion (113) and the second hinge portion (213) are connected to each other and hinged on the hinge shaft (103).

9. A conductive clamp to optimize contact detection according to claim 7, wherein, The first contact (110) is provided with a first extension (114) extending toward the gripping side of the first clamping arm (101), and the second contact (210) is provided with a second extension (214) extending toward the gripping side of the first clamping arm (101). The first extension (114) and the second extension (214) are electrically connected to each other via a third electrical wire (550). The first electrical wire (530) is electrically connected to one of the first extension (114) and the second extension (214).

10. An emergency start power supply (600) comprising an optimized contact detection electrically conductive clamp according to any one of claims 1-9, characterized in that, The conductive clamp (100) is equipped with a positive conductive clamp (100+) and a negative conductive clamp (100-); wherein, the positive conductive clamp (100+) is used to connect to the positive terminal (901) of the device (900), and the negative conductive clamp (100-) is used to connect to the negative terminal (901) of the device (900); it also includes: The detection module (602) is connected to the first contact (110) and / or the second contact (210) of the positive conductive clamp (100+) and to the third contact (310) of the positive conductive clamp (100+) to detect the impedance between the positive conductive clamp (100+) and the lap terminal (901) of the positive terminal of the device (900); it is also connected to the first contact (110) and / or the second contact (210) of the negative conductive clamp (100-) and to the third contact (310) of the negative conductive clamp (100-) to detect the impedance between the negative conductive clamp (100-) and the lap terminal (901) of the negative terminal of the device (900). A switch (604) is connected between the positive conductive clamp (100+) and the battery module (601) or between the negative conductive clamp (100-) and the battery module (601). The control module (603) is electrically connected to the detection module (602) to obtain the impedance between the positive conductive clamp (100+) and the contact terminal (901) of the positive terminal of the device (900) and the impedance between the negative conductive clamp (100-) and the contact terminal (901) of the negative terminal of the device (900); it is connected to the control terminal of the switch (604) to control the battery module (601) to provide electrical energy to the positive conductive clamp (100+) and the negative conductive clamp (100-).

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