Special wire for storage battery for engineering machinery

Abstract

The utility model discloses a special wire for a storage battery for engineering machinery, which comprises a cable taking rare earth aluminum alloy as a conductor and cable joints connected at two ends of the cable, the cable is connected with the cable joints through rare earth aluminum alloy connecting pieces, and each rare earth aluminum alloy connecting piece comprises a sleeve connecting part and a welding connecting part. The outer diameter of the sleeve connecting part is matched with the outer diameter of a cable, the sleeve connecting part is connected with the end of the cable in a crimping mode through crimping equipment after being connected to the end of the cable in a sleeving mode, the welding connecting part is connected with the cable connector in a welding mode, and insulating parts are arranged on the outer side of the cable connector, the outer side of the rare earth aluminum alloy connecting piece and the outer side of the connecting portion of the rare earth aluminum alloy connecting piece and the cable respectively. According to the special wire for the storage battery for the engineering machinery, the sleeve connecting part is connected with the end part of the cable in a sleeving manner and then is connected with the end part of the cable in a pressing manner, the connection is simple, convenient and firmer, the conductivity of the connecting part can be ensured, and the welding of the rare earth aluminum alloy connecting piece and the cable joint can be simpler and more convenient by arranging the welding connecting part on the rare earth aluminum alloy connecting piece.

Description

Technical Field

[0001] This utility model relates to the field of cables, and in particular to a special cable for batteries used in engineering machinery. Background Technology

[0002] Construction machinery is an important component of the equipment manufacturing industry. In general terms, construction machinery refers to the mechanical equipment necessary for comprehensive mechanized construction projects, including earthmoving, road construction and maintenance, mobile lifting and loading operations, and various building projects. It is mainly used in national defense construction, transportation infrastructure, energy industry construction and production, mining and other raw material industry construction and production, agriculture, forestry and water conservancy construction, industrial and civil construction, urban construction, and environmental protection.

[0003] The batteries in construction machinery are usually high-power batteries with large output current, so cables that can carry large currents must be used, and the cables must have high conductivity.

[0004] Traditional electric wires and cables mostly use copper wire as the conductor. However, due to the high price of copper, rare earth aluminum alloys were later designed as the conductor material for electric wires and cables. Rare earth aluminum alloys are aluminum alloys made primarily of aluminum, with added iron, rare earth elements, and other materials. Existing dedicated battery cables for engineering machinery use rare earth aluminum alloy conductors, while the conductive components inside the cable joints are typically made of copper to improve conductivity. After a period of use, the connection between the cable conductor and the conductive components inside the joint is prone to oxidation, affecting the conductivity at the joint.

[0005] To address the aforementioned issues, patent CN216055195U discloses a rare-earth aluminum alloy cable harness for vehicles. This design incorporates a rare-earth aluminum alloy connector to connect the cable to its two ends. However, the structure of the rare-earth aluminum alloy connector is not specifically disclosed, and the connection process between the connector and the cable is complex, thus requiring further improvement. Summary of the Invention

[0006] The purpose of this utility model is to address the problems of existing rare earth aluminum alloy cables, which do not specifically disclose the structure of rare earth aluminum alloy connectors and have complex connection processes between rare earth aluminum alloy connectors and cables, by providing a dedicated battery cable for engineering machinery that can solve the aforementioned problems.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a dedicated battery cable for engineering machinery, comprising a cable with a rare earth aluminum alloy conductor and cable connectors at both ends of the cable. The cable and the cable connectors are connected by a rare earth aluminum alloy connector, which includes a sleeve connection part and a welded connection part. The outer diameter of the sleeve connection part is adapted to the outer diameter of the cable. After the sleeve connection part is fitted onto the end of the cable, it is crimped by a crimping device. The welded connection part is welded to the cable connector. Insulating components are provided on the outside of the cable connector, the rare earth aluminum alloy connector, and the connection part between the rare earth aluminum alloy connector and the cable.

[0008] In the above solution, the rare-earth aluminum alloy connector and the cable connector are welded together by friction welding or microwave welding. This connection method enables a stable connection between the rare-earth aluminum alloy connector and the copper cable connector, ensuring the conductivity between them.

[0009] In the above solution, the sleeve connection is fitted onto the end of the cable and then pressed together using a polygonal pressing mold. This design simplifies the connection between the cable and the sleeve connection, makes the connection more secure, and ensures the conductivity between the cable and the rare-earth aluminum alloy connector.

[0010] In the above scheme, the end of the cable conductor is cold-pressed and tin-impregnated with a rare earth aluminum alloy connector.

[0011] In the above solution, the insulating components include an insulating sleeve and a heat-shrink tubing. The heat-shrink tubing is fitted onto the outside of the connection between the rare-earth aluminum alloy connector and the cable, while the insulating sleeve is fitted onto the outside of the cable connector, the rare-earth aluminum alloy connector, and the connection between the rare-earth aluminum alloy connector and the cable. With this arrangement, the heat-shrink tubing, after being fitted, shrinks due to heating, ensuring a tight seal between the heat-shrink tubing and the rare-earth aluminum alloy connector and the connection between the rare-earth aluminum alloy connector and the cable. This guarantees insulation protection for the connection between the rare-earth aluminum alloy connector and the cable. Furthermore, by fitting an insulating sleeve onto the outside of the rare-earth aluminum alloy connector and the cable connector, the insulation protection is further enhanced.

[0012] In the above solution, the cable is provided with a flame-retardant corrugated tube on its exterior. By setting the flame-retardant corrugated tube, the cable can have flame-retardant properties, provide protection for the cable, and facilitate bending of the cable.

[0013] In the above solution, the cable connector is a battery cable connector, which has a mounting hole. This design facilitates the connection of the dedicated battery cable for construction machinery to the battery. During connection, the electrode connecting bolts can pass through the mounting hole and be fixedly connected to the threaded holes on the electrodes of the battery.

[0014] In the above solution, the conductor of the cable is surrounded by a copper braided layer. This copper braided layer enhances the cable's strength and prevents breakage.

[0015] This invention offers several advantages: The dedicated battery cable for engineering machinery features rare-earth aluminum alloy connectors at both ends of the cable. The sleeve connection of the rare-earth aluminum alloy connector can be sleeved onto the end of the cable, and then crimped using a crimping device. This design simplifies the connection between the cable end and the rare-earth aluminum alloy connector, resulting in a stronger and more stable connection while maintaining conductivity between the connector and the cable. Furthermore, the welded connection on the rare-earth aluminum alloy connector simplifies the welding process between the connector and the cable joint. The cable uses a rare-earth aluminum alloy core, offering high conductivity. This reduces costs while ensuring the battery cable meets conductivity requirements for engineering machinery. The use of rare-earth aluminum alloy connectors at the cable end prevents oxidation of the connection, ensuring conductivity between the cable, the connector, and the cable joint. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the dedicated battery cable for engineering machinery according to this utility model.

[0017] Figure 2 This is a structural schematic diagram of the rare earth aluminum alloy connector of this utility model.

[0018] Figure 3 This is a schematic diagram of the connection structure of the first type of cable connector and rare earth aluminum alloy connector used in the special battery cable for engineering machinery of this utility model.

[0019] Figure 4 This is a schematic diagram of the connection structure between the positive terminal of the second type of cable connector and the rare earth aluminum alloy connector for the special battery cable for engineering machinery of this utility model.

[0020] Figure 5 This utility model discloses a schematic diagram of the connection structure between the negative terminal of the second type of cable connector and the rare earth aluminum alloy connector for the special battery cable for engineering machinery.

[0021] Figure 6 This utility model provides a schematic diagram of the connection structure between a third type of cable connector and a rare-earth aluminum alloy connector for a dedicated battery cable for engineering machinery.

[0022] The reference numerals in the figure are as follows: cable 1, cable connector 2, assembly hole 21, sleeve interface 22, locking port 23, locking bolt 24, connecting arm 25, rare earth aluminum alloy connector 3, sleeve connection 31, welding connection 32, cavity 33, insulating sheath 4, heat shrink tubing 5, flame retardant corrugated tubing 6. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below through embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] like Figure 1 The present invention provides a special battery cable for engineering machinery, which includes a cable 1 with rare earth aluminum alloy as the conductor and cable connectors 2 connected to both ends of the cable 1. The cable 1 and the cable connectors 2 are connected by rare earth aluminum alloy connectors 3.

[0025] The specific structure and diameter of cable 1 can be configured as needed. For example, the cable can contain multiple strands of rare-earth aluminum alloy wires, which are twisted together to form the core. An insulation layer can be installed on the outside of cable 1, as well as a copper braided layer or a flame-retardant corrugated tube 6, etc. Specific installation methods can refer to the existing methods for installing the insulation sheath, copper braided layer, or flame-retardant corrugated tube of cables, and will not be elaborated here.

[0026] like Figure 1 The left-side view illustrates the connection structure between the rare-earth aluminum alloy connector 3 and the end of the cable 1. At the end of the cable 1, the wire core is exposed. The end of the cable 1 is used to connect with the rare-earth aluminum alloy connector 3, and its length is adapted to the depth of the internal cavity 33 of the sleeve connection part 31 on the rare-earth aluminum alloy connector 3.

[0027] like Figure 1 and 2 As shown, the rare earth aluminum alloy connector 3 includes a sleeve connection part 31 and a welded connection part 32. The sleeve connection part 31 and the welded connection part 32 can be integrally formed or other fixed connection methods can be used.

[0028] The sleeve connection part 31 is a cylindrical tube with a cylindrical cavity 33 inside. The diameter of the cylindrical cavity 33 is adapted to the diameter of the wire core at the end of the cable 1. During connection, the wire core is inserted into the cavity 33, so that the sleeve connection part 31 is first inserted into the wire core. Then, the sleeve connection part 31 is pressurized by the crimping equipment to crimp the sleeve connection part 31 to the wire core at the end of the cable. The crimping equipment can use a crimping die, which can be selected as needed. For example, a polygonal crimping die can be selected, such as a quadrilateral, hexagonal, or octagonal crimping die. During crimping, the crimping die is first clamped on the outer wall of the sleeve connection part 31, and then pressure is applied to the crimping die. The crimping die applies pressure to the sleeve connection part 31, causing the sleeve connection part 31 to be deformed by pressure, and applies pressure to the wire core in the cavity 33, so that a stable connection is formed between the sleeve connection part 31 and the wire core. After crimping is completed, a polygonal outer wall structure corresponding to the crimping die will be formed on the outer wall of the sleeve connection part 31.

[0029] After the sleeve connection part 31 is sleeved with the wire core at the end of the cable, the existing cold-press tinning process can also be used for connection. The specific cold-press tinning process is existing technology and will not be described in detail here.

[0030] The shape of the welded connection 32 can be designed according to needs; for example, the welded connection 32 can be a cylindrical structure. The welded connection 32 is welded to the cable connector 2. The welding method between the welded connection 32 and the cable connector 2 can be selected as needed. The preferred welding method is friction welding or microwave welding. The specific welding process is existing technology and will not be described in detail here.

[0031] Insulating components are provided on the outside of the cable connector 2, the rare earth aluminum alloy connector 3, and the connection between the rare earth aluminum alloy connector 3 and the cable 1.

[0032] The insulating components may include an insulating sleeve 4 and a heat-shrink tubing 5. The heat-shrink tubing 5 is fitted onto the outside of the connection between the rare-earth aluminum alloy connector 3 and the cable 1. The insulating sleeve 4 is fitted onto the outside of the cable connector 2, the rare-earth aluminum alloy connector 3, and the connection between the rare-earth aluminum alloy connector 3 and the cable 1. With this arrangement, the heat-shrink tubing 5, fitted onto the outside of the connection between the rare-earth aluminum alloy connector 3 and the cable 1, shrinks after being fitted by heating, ensuring a tight fit between the heat-shrink tubing 5 and the rare-earth aluminum alloy connector 3 and the connection between the rare-earth aluminum alloy connector 3 and the cable 1, thus guaranteeing insulation protection for the connection between the rare-earth aluminum alloy connector 3 and the cable 1. Furthermore, by fitting the insulating sleeve 4 onto the outside of the rare-earth aluminum alloy connector and the cable connector, their insulation protection is further enhanced.

[0033] Cable connector 2 is a battery cable connector, and it has a mounting hole 21. The specific structure of the battery cable connector can be selected according to needs, as shown in the attached figure. Figure 3-6 The diagram shows the structure of four different cable connectors. (See attached image.) Figure 3 The first type of cable connector 2 shown is a copper plate with a mounting hole 21 in the middle. During assembly, it can be electrically connected to the electrode on the battery using bolts. (See attached image) Figure 4 and 5 The diagram shows a second type of cable connector, including a sleeve 22, a locking port 23, and a locking bolt 24 located at the locking port. When connecting the battery terminals, first loosen the locking bolt 24, then slip the sleeve 22 onto the battery terminals, and then tighten the locking bolt 24 to form a secure connection between the cable connector 2 and the battery terminals. (See attached diagram) Figure 6 The third type of cable connector is shown. Its structure is based on the second type of cable connector. A connecting arm 25 is provided on the outer side of the sleeve interface. An assembly hole is provided on the connecting arm 25. In addition to connecting the cable connector 2 to the battery connector through the sleeve interface and locking it with the locking bolt 24, the cable connector 2 is also fixed to the battery housing through the assembly hole on the connecting arm 25 by bolts. This can further enhance the connection strength between the cable connector and the battery and prevent the connection between the cable connector 2 and the battery electrode from loosening. In particular, it can prevent the relative rotation between the cable connector 2 and the battery electrode from causing the connection between the cable connector and the electrode to loosen.

[0034] The three types of cable connectors mentioned above are just examples. In practical applications, other battery connector structures can be used as needed.

[0035] This utility model discloses a special battery cable for engineering machinery, which is equipped with rare earth aluminum alloy connectors at both ends of the cable. The sleeve connection part of the rare earth aluminum alloy connector can be sleeved with the end of the cable. After sleeved connection, the connection is made by crimping with a crimping device. This design makes it easier to connect the end of the cable to the rare earth aluminum alloy connector, and also makes the connection stronger and more stable, while ensuring the conductivity between the rare earth aluminum alloy connector and the cable.

[0036] This utility model provides a dedicated battery cable for engineering machinery. By setting a welding connection part on the rare earth aluminum alloy connector, the welding of the rare earth aluminum alloy connector to the cable connector can be made simpler.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dedicated battery cable for engineering machinery, comprising a cable with a rare-earth aluminum alloy conductor and cable connectors connecting both ends of the cable, characterized in that: The cable and the cable connector are connected by a rare earth aluminum alloy connector, which includes a sleeve connection part and a welded connection part. The outer diameter of the sleeve connection part is adapted to the outer diameter of the cable. After the sleeve connection part is fitted onto the end of the cable, it is crimped by a crimping device. The welded connection part is welded to the cable connector. Insulating parts are provided on the outside of the cable connector, the rare earth aluminum alloy connector, and the connection part between the rare earth aluminum alloy connector and the cable.

2. The dedicated battery cable for engineering machinery according to claim 1, characterized in that: The rare earth aluminum alloy connector and the cable connector are welded together by friction welding or microwave welding.

3. The dedicated battery cable for engineering machinery according to claim 1, characterized in that: The sleeve connection part is sleeved with the end of the cable and then pressed by a polygonal pressing mold.

4. The dedicated battery cable for engineering machinery according to claim 1, characterized in that: The ends of the cable conductors are cold-pressed and tin-impregnated with rare-earth aluminum alloy connectors.

5. The dedicated battery cable for engineering machinery according to claim 1, characterized in that: The insulating components include an insulating sheath and a heat shrink tubing. The heat shrink tubing is fitted onto the outside of the connection between the rare earth aluminum alloy connector and the cable, and the insulating sheath is fitted onto the outside of the cable connector, the rare earth aluminum alloy connector, and the connection between the rare earth aluminum alloy connector and the cable.

6. The dedicated battery cable for engineering machinery according to claim 1, characterized in that: The cable is provided with a flame-retardant corrugated pipe on its exterior.

7. The dedicated battery cable for engineering machinery according to claim 1, characterized in that: The cable connector is a battery cable connector, and the battery cable connector has an assembly hole.

8. The dedicated battery cable for engineering machinery according to claim 1, characterized in that: The conductor of the cable is provided with a copper braided layer.

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