Connecting wire and storage battery pack

Abstract

The utility model discloses a connecting wire and a storage battery pack, and relates to the technical field of storage batteries. The wiring board is fixedly connected to the end part of the cable, and a bolt assembly hole is formed in the surface of the wiring board; the insulation head wraps the wiring board, and the surface of the insulation head is provided with an assembly hole for enabling the bolt assembly hole and the wiring board at the edge of the bolt assembly hole to be in an exposed state; the hole wall of the assembly hole is provided with a through end threading groove in the radial direction of the assembly hole, and / or a through top threading groove in the center line direction of the assembly hole. The protective cap is an insulator and can be mounted in the assembly hole in a matched manner; according to the connecting line and the storage battery pack, through the structural design that the end threading groove and the top threading groove are additionally arranged in the insulating head, the adaptation problem of different acquisition lines is met, and meanwhile, the protective cap is additionally arranged, so that the problems of installation convenience of the different acquisition lines and insulativity of installation positions are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of storage batteries, and more specifically, to a connecting wire. In addition, the utility model also relates to a storage battery pack comprising the connecting wire. Background Art

[0002] The battery inspection instrument is one of the necessary equipment for battery packs. It is used to monitor the battery operating status in real time and issue alarms for abnormal batteries.

[0003] Because the inspection instrument needs to install the data acquisition line (available in two styles: OT terminal block or L-shaped plug-in block) to the battery pole position to collect data signals, the battery connection line installed on the pole needs to reserve an installation position for the acquisition line.

[0004] There are currently two ways to solve this problem: the first is to reserve a wire threading hole in the middle of the side of the connecting wire insulation head, which can be used to install most collection wire specifications, but wiring pieces or plug-in pieces that are too large cannot be inserted; the second is to reserve a wire threading groove on the top of the side of the insulation head, which can be used to install all OT wiring piece collection wires, but due to the width limitation of the wire threading groove, L-shaped plug-in piece collection wires cannot be installed.

[0005] In summary, how to solve the problem of installation convenience and specification matching of data acquisition cables is an issue that those skilled in the art urgently need to solve. Utility Model Content

[0006] In view of this, the purpose of the present invention is to provide a connecting wire, which meets the adaptation problem of different collection wires by adding end wire grooves and top wire grooves in the insulating head, and at the same time adds a protective cap to solve the installation convenience and insulation problems of different collection wires at the installation position.

[0007] Another object of the present invention is to provide a battery pack including the above-mentioned connecting wire, which has the same technical features and can solve the same problem.

[0008] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0009] A connecting line, comprising:

[0010] cable;

[0011] A terminal block, fixedly connected to the end of the cable, and having bolt assembly holes provided on its surface;

[0012] an insulating head wrapping the terminal block and having an assembly hole on its surface, so as to expose the bolt assembly hole and the terminal block at the edge of the bolt assembly hole; the hole wall of the assembly hole is provided with an end threading groove extending radially therethrough and / or a top threading groove extending along its centerline;

[0013] The protective cap is an insulator and can be fitted into the assembly hole.

[0014] Preferably, the protective cap and the assembly hole are in transition fit or interference fit; a protective cap handle is provided between the protective cap and the insulating head for connecting the protective cap and the insulating head.

[0015] Preferably, a hollow structure is provided in the middle of the protective cap handle; when the protective cap is installed in the assembly hole, the center line of the through hole of the hollow structure overlaps with the center line of the end threading groove.

[0016] Preferably, a brim is provided on the outer periphery of the protective cap for covering the gap between the protective cap and the inner wall of the assembly hole.

[0017] Preferably, the assembly hole is a stepped hole. When the protective cap is installed in the assembly hole, the end face of the brim abuts against the stepped surface of the assembly hole to cover the gap between the outer wall of the protective cap and the inner wall of the small-diameter part of the assembly hole.

[0018] Preferably, a through hole is provided in the center of the top of the protective cap.

[0019] Preferably, the through hole is a circular hole, and a plurality of groups of soft crescent petals are arranged in the circular hole; when the pressure difference between the inside and outside of the protective cap is not greater than the set value, the crescent petals close the through hole, and when the pressure difference between the inside and outside of the protective cap is greater than the set value, the crescent petals deform to open the through hole.

[0020] A battery pack comprises any one of the connecting wires described above.

[0021] Compared with the prior art, the connecting wire provided by the present invention has at least the following beneficial effects:

[0022] 1. An assembly hole is set at the insulating head to expose the terminal block, and an end wire groove is set along the radial direction of the hole wall to meet the adaptation requirements of the OT terminal block. At the same time, the structural design of the protective cap meets the insulation requirements of the OT terminal block after installation. The protective cap adopts a detachable design to meet the requirements of quick installation of the OT terminal block.

[0023] 2. A top wire groove is set on the wall of the assembly hole along its own center line direction to meet the adaptation requirements of the L-shaped plug-in piece. At the same time, the structural design of the protective cap is adopted to meet the insulation requirements of the L-shaped plug-in piece after installation. The protective cap adopts a detachable design to meet the requirement of quick installation of the L-shaped plug-in piece;

[0024] 3. The top wire groove is used to adapt to the L-shaped plug-in piece. Because the L-shaped plug-in piece has a larger size, the width of the top wire groove is larger, but it does not radially penetrate the insulating head. Therefore, it can effectively retain the rigidity strength of the insulating head.

[0025] The battery pack provided by the utility model includes all the technical features of the above-mentioned connecting wires and has the same beneficial effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0027] Figure 1 This is a schematic diagram of the structure of the specific connecting line provided by the utility model;

[0028] Figure 2 This is a schematic diagram of the structure of the specific OT terminal block collection line and connecting line assembly provided by the utility model;

[0029] Figure 3 This is a schematic diagram of the structure of the specific L-shaped plug-in piece collection line and connecting line assembly provided by the utility model;

[0030] Figure 4 This is a top view of a specific protective cap provided by the present invention.

[0031] Figures 1-4 middle:

[0032] 1. Insulation head; 2. End wire groove; 3. Hollow structure; 4. Protective cap handle; 5. Protective cap; 6. Brim; 7. Terminal block; 8. Top wire groove; 9. Cable; 10. OT terminal block collection line; 11. Connecting bolt; 12. L-shaped plug-in piece collection line. DETAILED DESCRIPTION

[0033] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] The core of this utility model is to provide a connecting wire, which meets the adaptation problem of different collection wires by adding end wire grooves and top wire grooves in the insulating head. At the same time, a protective cap is added to solve the installation convenience and insulation problems of different collection wires at the installation position.

[0035] Another core of the present invention is to provide a battery pack including the above-mentioned connecting wire, which has the same technical features and can solve the same technical problems.

[0036] Please refer to Figures 1-4 , a connecting line comprising:

[0037] Cable 9;

[0038] The terminal block 7 is fixedly connected to the end of the cable 9 and has bolt assembly holes on its surface;

[0039] An insulating head 1 wraps around a terminal block 7 and has a mounting hole on its surface, so that the bolt mounting hole and the terminal block 7 at the edge of the bolt mounting hole are exposed. The wall of the mounting hole is provided with an end threading groove 2 extending radially therethrough and / or a top threading groove 8 extending along its centerline.

[0040] The protective cap 5 is an insulator and can be fitted into the assembly hole.

[0041] When designing and using, a terminal block 7 is added to the end of the cable 9 to facilitate contact with the planar structure of the OT terminal piece collection line 10 or the L-shaped plug-in piece collection line 12, ensuring its good conductive performance and avoiding the problem of poor contact;

[0042] At the same time, the insulating head 1 is used to wrap the terminal block 7 to improve the insulation performance of the connection;

[0043] At the same time, the structural design of the assembly hole and the protective cap 5 is adopted at the insulating head 1. When the protective cap 5 is separated, it is convenient to assemble the OT terminal piece collection line 10 or the L-shaped plug piece collection line 12. When the protective cap 5 is assembled, it can improve the insulation performance of the connection position of the OT terminal piece collection line 10 or the L-shaped plug piece collection line 12;

[0044] And an end threading groove 2 is set in the assembly hole to facilitate the assembly of the OT terminal block collection line 10, such as Figure 2As shown, the wire body portion of the OT terminal block collection line 10 is passed through the end wire groove 2, and the flat portion enters through the assembly hole and contacts the terminal block 7. The flat portion and the terminal block 7 are fixedly connected using the connecting bolts 11. Then, the protective cap 5 is assembled. During the process, the protective cap 5 covers and protects the exposed position of the flat portion and the terminal block 7, thereby improving its insulation performance. Moreover, since the wire body portion is arranged in the end wire groove 2, the wire body portion will not be squeezed by the protective cap 5, effectively avoiding damage to the insulation layer of the wire body portion.

[0045] A top threading groove 8 is provided in the assembly hole to facilitate the assembly of the L-shaped plug-in piece collection line 12. Figure 3 As shown, the flat part of the L-shaped plug-in piece collecting wire 12 is placed through the assembly hole, in contact with the terminal block 7, and fixed to the terminal block 7 by the connecting bolt 11. During the process, the vertical arm of the L-shaped plug-in piece collecting wire 12 is placed in the top wire threading groove 8, and then the protective cap 5 is assembled. During the process, the protective cap 5 covers and protects the flat part and the exposed position of the terminal block 7, thereby improving its insulation performance. Moreover, since the wire body part is arranged in the top wire threading groove 8, the wire body part will not be squeezed by the protective cap 5, thereby effectively avoiding damage to the insulation layer of the wire body part.

[0046] In some embodiments, the protective cap 5 and the assembly hole are transition fit or interference fit; a protective cap handle 4 is provided between the protective cap 5 and the insulating head 1 for connecting the protective cap 5 and the insulating head 1;

[0047] like Figure 1 As shown, by adding a protective cap handle 4, the protective cap 5 is connected to the insulating head 1 as a whole to prevent the protective cap 5 from being lost. In some designs, the protective cap 5, the protective cap handle 4 and the insulating head 1 are formed in one piece, and all are made of TPE-thermoelastic plastic insulation material with good insulation performance;

[0048] At the same time, the protective cap 5 and the assembly hole adopt an interference fit or a transition fit, which can ensure that the protective cap 5 will not fall off naturally after being installed in the assembly hole, thereby ensuring its stability. When the protective cap 5 needs to be opened for maintenance, the protective cap 5 can be removed by simply pulling the protective cap handle 4.

[0049] In some embodiments, a hollow structure 3 is provided in the middle of the protective cap handle 4; when the protective cap 5 is installed in the assembly hole, the center line of the through hole of the hollow structure 3 overlaps with the center line of the end threading groove 2;

[0050] like Figure 2As shown, when installing the OT terminal block collection line 10, first pass the wire body part through the through hole of the hollow structure 3, and then pass the wire body part through the end wire groove 2. After the installation of the OT terminal block collection line 10 is completed and the protective cap 5 is assembled, the position of the protective cap handle 4 is defined. Therefore, the hollow structure 3 helps to complete the position definition of the wire body part of the OT terminal block collection line 10, reduce the shaking of the wire body part, and ensure stable contact between the collection line and the terminal board 7.

[0051] In some embodiments, a brim 6 is provided on the outer periphery of the protective cap 5 to cover the gap between the protective cap 5 and the inner wall of the assembly hole;

[0052] like Figure 1 As shown, after the protective cap 5 is assembled with the assembly hole, a gap will inevitably appear between the two. If dust or water vapor enters the gap, it will cause corrosion of the metal at the contact position or poor contact. Therefore, adding a brim 6 can increase the sealing of the gap position and reduce the entry of dust and water vapor. At the same time, for the insulating head 1 designed with a top wire groove 8, when the top wire groove 8 is idle, the brim 6 can also cover the top wire groove 8 to prevent dust and water vapor from entering.

[0053] In some embodiments, the assembly hole is a stepped hole. When the protective cap 5 is installed in the assembly hole, the end surface of the brim 6 abuts against the stepped surface of the assembly hole, thereby covering the gap between the outer wall of the protective cap 5 and the inner wall of the small-diameter portion of the assembly hole.

[0054] The brim 6 is set at the middle height position of the outer periphery of the protective cap 5, and combined with the stepped hole design of the assembly hole, the brim 6 can shield and seal from the top of the gap between the protective cap 5 and the assembly hole, thereby improving the sealing performance.

[0055] In some embodiments, a through hole is provided at the center of the top of the protective cap 5. The through hole can be used to insert the needle of a multimeter into the protective cap to contact the terminal block 7 or the connecting bolt 11 to detect the voltage drop. It can also be used to balance the pressure difference inside and outside the protective cap 5.

[0056] A cavity is provided at the bottom of the protective cap 5. When the bolt assembly hole at the terminal block 7 is sealed, the gas in the cavity cannot be discharged when the protective cap 5 is assembled, which will cause the internal pressure to increase, hindering the downward assembly of the protective cap 5, and easily causing the protective cap 5 to be not installed in place. After adding the through hole, the internal and external air pressures are balanced, which makes it easier to ensure that the protective cap 5 is installed in place.

[0057] In some embodiments, as Figure 4 As shown, the through hole is a circular hole, and a plurality of groups of soft crescent petals are provided in the circular hole; when the pressure difference between the inside and outside of the protective cap 5 is not greater than the set value, the crescent petals close the through hole; when the pressure difference between the inside and outside of the protective cap 5 is greater than the set value, the crescent petals deform and open the through hole;

[0058] By adding crescent petals at the through hole, the through hole is sealed to prevent dust and water vapor from entering. However, when the pressure difference between the inside and outside is large, the crescent petals can be pushed to deform, thereby making the through hole conductive. After balancing the internal and external pressures, the crescent petals are reset and the through hole is sealed again to ensure its sealing performance.

[0059] In addition to the connecting wires disclosed in the above embodiments, the present invention also provides a battery pack including the above connecting wires, wherein the battery is one of a lead-acid battery, a lithium-ion battery, a sodium-ion battery, and a solid-state battery. The battery pack is composed of a group of lead-acid batteries, lithium-ion batteries, sodium-ion batteries, and solid-state batteries connected in series and parallel through connecting wires. Please refer to the prior art for the structure of other parts of the battery pack, which will not be repeated here.

[0060] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0061] The above describes in detail the connecting cable and battery pack provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above examples is intended only to facilitate understanding of the method and core concept of the present invention. It should be noted that those skilled in the art may make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications fall within the scope of protection of the claims of the present invention.

Claims

1. A connecting line, characterized in that: include: Cable (9); A terminal block (7) is fixedly connected to the end of the cable (9) and has bolt assembly holes on its surface; An insulating head (1) wraps the terminal block (7) and is provided with an assembly hole on its surface, so as to expose the bolt assembly hole and the terminal block (7) at the edge of the bolt assembly hole; the hole wall of the assembly hole is provided with a through end threading groove (2) along its own radial direction, and / or a through top threading groove (8) along its own centerline direction; The protective cap (5) is an insulator and can be fitted into the assembly hole.

2. The connecting line according to claim 1, characterized in that The protective cap (5) and the assembly hole are in transition fit or interference fit; a protective cap handle (4) is provided between the protective cap (5) and the insulating head (1) for connecting the protective cap (5) and the insulating head (1).

3. The connecting line according to claim 2, characterized in that A hollow structure (3) is provided in the middle of the protective cap handle (4); when the protective cap (5) is installed in the assembly hole, the center line of the through hole of the hollow structure (3) overlaps with the center line of the end threading groove (2).

4. The connecting line according to claim 1, wherein: The outer periphery of the protective cap (5) is provided with a brim (6) for covering the gap between the protective cap (5) and the inner wall of the assembly hole.

5. The connecting line according to claim 4, characterized in that The assembly hole is a stepped hole. When the protective cap (5) is installed in the assembly hole, the end surface of the brim (6) abuts against the stepped surface of the assembly hole, thereby covering the gap between the outer wall of the protective cap (5) and the inner wall of the small-diameter portion of the assembly hole.

6. The connecting line according to claim 1, characterized in that A through hole is provided at the top center of the protective cap (5).

7. The connecting line according to claim 6, characterized in that The through hole is a circular hole, and a plurality of groups of soft crescent petals are arranged in the circular hole; when the pressure difference between the inside and outside of the protective cap (5) is not greater than a set value, the crescent petals close the through hole; when the pressure difference between the inside and outside of the protective cap (5) is greater than the set value, the crescent petals deform to open the through hole.

8. A battery pack, characterized in that: The connecting wire comprises the connecting wire according to any one of claims 1 to 7.

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