A lithium battery pack for the power unit of a forklift construction machinery vehicle

Abstract

This utility model belongs to the field of battery technology, and specifically relates to a lithium battery pack for a forklift construction machinery vehicle. Applied to vehicles, the lithium battery pack for the forklift construction machinery vehicle includes a counterweight box and a lithium battery pack. The counterweight box is adapted to the vehicle and is used for installation on the vehicle, with reserved installation space inside. The lithium battery pack is a standard component, and the size and shape of the installation space match the lithium battery pack, which is then installed within the installation space. By designing the counterweight box and lithium battery pack separately, and designing the lithium battery pack as a standardized component of uniform specifications, the same standard lithium battery pack can be paired with counterweight boxes of different specifications, meeting the non-standard requirements of different brands and vehicle models for battery weight and installation space, and facilitating the rapid and flexible replacement of lead-acid batteries.

Description

Technical Field

[0001] This utility model belongs to the field of battery technology, and specifically relates to a lithium battery pack for the power unit of forklift construction machinery vehicles. Background Technology

[0002] Forklifts are widely used in various industries as material handling equipment in the construction machinery sector. With market development, more and more forklifts are gradually being equipped with lithium batteries as their power units. Traditional lead-acid models require customized development and design during the lithium battery replacement process.

[0003] However, the design process requires customized development for different brands, vehicle models, and customer needs, resulting in a slow, time-consuming, and labor-intensive process that makes it difficult to quickly replace traditional lead-acid batteries with lithium batteries. Therefore, it is necessary to design a lithium battery pack for the power unit of forklift construction machinery vehicles to solve the above problems. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a lithium battery pack for the power unit of forklift construction machinery vehicles, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a lithium battery pack for a forklift engineering machinery vehicle, applied to the vehicle, wherein the lithium battery pack for the forklift engineering machinery vehicle includes: A counterweight box, which is adapted to the vehicle and is used for installation on the vehicle, with reserved installation space inside the counterweight box; A lithium battery pack, wherein the lithium battery pack is a standard component, and the size and shape of the mounting space are matched with the lithium battery pack, and the lithium battery pack is used to be installed in the mounting space.

[0006] Furthermore, the power unit lithium battery pack of the forklift engineering machinery vehicle also includes electrical components. The lithium battery pack is connected to multiple electrical components, which are arranged in a dual-circuit structure to form a charging and discharging dual circuit. The lithium battery pack adopts a charging and discharging port-to-port method.

[0007] Furthermore, the selection of electrical components includes a redundancy allowance.

[0008] Furthermore, the power unit lithium battery pack of the forklift engineering machinery vehicle also includes a wall-penetrating terminal, charging positive and negative electrode wiring harness, discharging positive and negative electrode wiring harness, instrument wiring harness, CAN communication wiring harness, debugging wiring harness and connector. The wall-penetrating terminal is located on the outside of the lithium battery pack and is connected to the lithium battery pack. One end of the charging positive and negative electrode harness and the discharging positive and negative electrode harness are both connected to the electrical device, and the other end of each is connected to the wall-penetrating terminal through the connector. The instrument wiring harness, the CAN communication wiring harness, and the debugging wiring harness are connected at one end to electrical accessories and at the other end to the through-wall terminal via the connector.

[0009] Furthermore, the power unit lithium battery pack of the forklift engineering machinery vehicle also includes a high-voltage junction box, and the connectors and through-wall terminals connected to the charging positive and negative wire harnesses and the discharging positive and negative wire harnesses are all located inside the high-voltage junction box.

[0010] Furthermore, the power unit lithium battery pack of the forklift engineering machinery vehicle also includes a charging plug and a base. The base is detachably connected to the upper end of the lithium battery pack, and the charging plug is used to install onto the base.

[0011] Furthermore, the base is provided with a 5° elevation angle.

[0012] The technical effects and advantages of this utility model are as follows: By designing the counterweight box and lithium battery pack separately, and designing the lithium battery pack as a standardized component of uniform specifications, the same standard lithium battery pack can be paired with counterweight boxes of different specifications to meet the non-standard requirements of different brands and models for battery weight and installation space, which is conducive to the rapid and flexible replacement of lead-acid batteries.

[0013] This approach ensures standardized production of lithium battery packs, reduces production complexity, and improves production efficiency and delivery capabilities. Furthermore, the flexible combination of lithium battery packs and counterweight boxes allows for application and modification scenarios across different brands and vehicle models, greatly enhancing the product's versatility and adaptability.

[0014] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures pointed out in the description and drawings. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1This invention provides a schematic diagram of the structure of the lithium battery pack, the power unit of a forklift engineering machinery vehicle, according to an embodiment of the present invention. Figure 2 The diagram shows the structure of the instrument wiring harness, CAN communication wiring harness, and debugging wiring harness according to an embodiment of the present invention.

[0017] Reference numerals: 1. Counterweight box; 11. Installation space; 2. Lithium battery pack; 31. Charging positive and negative electrode harness; 32. Discharging positive and negative electrode harness; 33. Instrument harness; 34. CAN communication harness; 35. Debugging harness; 4. Base. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, 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.

[0019] like Figure 1 As shown in the figure, a lithium battery pack for a forklift construction machinery vehicle is provided according to an embodiment of the present invention. The lithium battery pack includes a counterweight box 1 and a lithium battery pack 2. The counterweight box 1 is adapted to the vehicle and is used for installation on the vehicle. An installation space 11 is reserved inside the counterweight box 1. The lithium battery pack 2 is a standard component, and the size and shape of the installation space 11 match the lithium battery pack 2. The lithium battery pack 2 is used to be installed within the installation space 11.

[0020] Specifically, traditional lithium battery packs 2, because the counterweight is integrated with the battery pack, require dedicated battery packs to be designed for different brands and vehicle models, resulting in extremely poor versatility and making mass production impossible. However, by designing the counterweight box 1 separately from the lithium battery pack 2, and designing the lithium battery pack 2 as a standard component of uniform specifications, the same standard lithium battery pack 2 can be paired with different specifications of counterweight box 1, meeting the non-standard requirements of different brands and vehicle models regarding battery weight and installation space 11, and facilitating the rapid and flexible replacement of lead-acid batteries.

[0021] This ensures standardized production of lithium battery pack 2, reduces production complexity, and improves production efficiency and delivery capabilities. Furthermore, the flexible combination of lithium battery pack 2 and counterweight box 1 allows for application and modification scenarios across different brands and vehicle models, greatly enhancing the product's versatility and adaptability.

[0022] Optionally, the power unit lithium battery pack of the forklift engineering machinery vehicle also includes electrical components. The lithium battery pack 2 is connected to the electrical components, which are arranged in a dual-circuit structure to form a charging and discharging dual circuit. The lithium battery pack 2 adopts a charging and discharging port method.

[0023] Specifically, lithium battery pack 2 adopts a separate charging and discharging port method, meaning that the charging interface and discharging interface of lithium battery pack 2 are independent of each other. Combined with the dual-circuit structure design of the electrical components, the charging circuit and the discharging circuit can work separately, avoiding mutual current interference during charging and discharging, which can effectively reduce the aging rate of electrical components and extend the service life of lithium battery pack 2.

[0024] Optionally, the selection of electrical components is configured with redundant adaptation parameters.

[0025] Specifically, redundant compatibility was reserved when selecting electrical components. This redundant design not only enables the lithium battery pack 2 to adapt to different industrial vehicle application scenarios without the need for separate selection for a single vehicle model, but also addresses situations where wiring harness adjustments are required in different scenarios. Users can meet usage needs simply by adjusting the wiring harness without replacing electrical components, further enhancing the product's adaptability and scenario coverage.

[0026] like Figure 1 and Figure 2 As shown, optionally, the power unit lithium battery pack of the forklift engineering machinery vehicle also includes a wall-penetrating terminal, a charging positive and negative electrode harness 31, a discharging positive and negative electrode harness 32, an instrument harness 33, a CAN communication harness 34, a debugging harness 35, and a connector. The wall-penetrating terminal is located outside the lithium battery pack 2 and is connected to the lithium battery pack 2. One end of the charging positive and negative electrode harness 31 and the discharging positive and negative electrode harness 32 are both connected to the electrical device, and the other end of each is connected to the wall-penetrating terminal through the connector. The instrument wiring harness 33, the CAN communication wiring harness 34, and the debugging wiring harness 35 are connected to electrical accessories at one end and to the wall-penetrating terminal at the other end via the connector.

[0027] Specifically, by using connectors to connect to through-wall terminals, subsequent maintenance or modification / replacement of the wiring harness does not require disassembling the battery pack inside lithium battery pack 2. The wiring harness specifications and models can be changed simply by operating from the outside of the lithium battery pack 2 casing, making the operation more efficient, safer, and more convenient. Furthermore, this wiring harness connection method also achieves universality for electrical components of different types of products, allowing for quick disassembly and installation during replacement, further improving the convenience of maintenance and modification and reducing operating costs.

[0028] In this embodiment, multiple through-wall terminals are provided. Electrical accessories include external instruments, a vehicle control system, and external debugging equipment. One end of the charging positive and negative wiring harness 31 is connected to the through-wall terminal via a connector, and the other end is connected to the charging interface. One end of the discharging positive and negative wiring harness 32 is connected to the through-wall terminal via a connector, and the other end is connected to the discharging interface. One end of the instrument wiring harness 33 is connected to the through-wall terminal via a connector, and the other end is connected to the external instrument. The CAN communication wiring harness 34 is connected to the through-wall terminal via a connector, and the other end is connected to the vehicle control system. The debugging wiring harness 35 is connected to the through-wall terminal via a connector, and the other end is connected to the external debugging equipment.

[0029] Optionally, the power unit lithium battery pack of the forklift engineering machinery vehicle also includes a high-voltage junction box, and the connectors and through-wall terminals connected to the charging positive and negative electrode harnesses 31 and the discharging positive and negative electrode harnesses 32 are all located inside the high-voltage junction box.

[0030] Specifically, the charging positive and negative wiring harness 31 is connected to a through-wall terminal via a connector, and the connector and the through-wall terminal are located in a high-voltage junction box. The discharging positive and negative wiring harness 32 is connected to another through-wall terminal via another connector, and the other connector and the other through-wall terminal can be located in another high-voltage junction box.

[0031] The high-voltage junction box provides waterproof, dustproof, and insulation protection. Furthermore, the connector types for the charging positive and negative wire harnesses 31 and the discharging positive and negative wire harnesses 32 can be flexibly replaced to adapt to connector specifications required in different scenarios.

[0032] like Figure 1 As shown, optionally, the power unit lithium battery pack of the forklift engineering machinery vehicle also includes a charging plug and a base 4. The base 4 is detachably connected to the upper end of the lithium battery pack 2, and the charging plug is used to install onto the base 4.

[0033] Specifically, in scenarios where vehicle height is limited, the base 4 can be directly removed, and the overall height can be reduced without adjusting the lithium battery pack 2, enabling the lithium battery pack 2 to adapt to height-restricted installation ranges and improving scenario adaptability.

[0034] In this embodiment, the charging plug is used to connect to the charging interface. Secondly, the base 4 can be bolted to the outer side of the upper end of the lithium battery pack 2's casing.

[0035] Optionally, the base 4 is provided with a 5° elevation angle.

[0036] Specifically, the charging plug is installed on the detachable base 4 with a 5° tilt angle. This 5° tilt angle is ergonomic, making it easier for customers to plug and unplug the charging plug during charging and reducing the difficulty of the operation. Secondly, the 5° tilt angle can also effectively guide condensate out, preventing condensate from accumulating inside the charging plug when used in areas with large temperature differences. This prevents problems such as short circuits and poor contact caused by condensate, ensuring the safety and stability of the charging process.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A lithium battery pack as a power unit for forklift construction machinery vehicles, used in vehicles, characterized in that, include: A counterweight box (1) is adapted to the vehicle and is used for installation on the vehicle. The counterweight box (1) has reserved installation space (11). The lithium battery pack (2) is a standard part, and the size and shape of the mounting space (11) are matched with the lithium battery pack (2). The lithium battery pack (2) is used to be installed in the mounting space (11).

2. The lithium battery pack for the power unit of the forklift engineering machinery vehicle according to claim 1, characterized in that, It also includes electrical components, the lithium battery pack (2) is connected to the electrical components, the electrical components are arranged in a dual-circuit structure to form a charging and discharging dual circuit, and the lithium battery pack (2) adopts a charging and discharging port method.

3. The lithium battery pack for the power unit of the forklift construction machinery vehicle according to claim 2, characterized in that, The selection of electrical components is configured with redundant adaptation parameters.

4. The lithium battery pack for the power unit of the forklift construction machinery vehicle according to claim 2, characterized in that, It also includes a wall-penetrating terminal, a charging positive and negative electrode harness (31), a discharging positive and negative electrode harness (32), an instrument harness (33), a CAN communication harness (34), a debugging harness (35), and a connector. The wall-penetrating terminal is located outside the lithium battery pack (2) and is connected to the lithium battery pack (2). One end of the charging positive and negative electrode harness (31) and the discharging positive and negative electrode harness (32) are both connected to the electrical device, and the other end of both are connected to the wall-penetrating terminal through the connector; The instrument wiring harness (33), the CAN communication wiring harness (34), and the debugging wiring harness (35) are connected to electrical accessories at one end and to the wall-penetrating terminal at the other end via the connector.

5. The lithium battery pack for the power unit of the forklift engineering machinery vehicle according to claim 4, characterized in that, It also includes a high-voltage junction box, in which the plugs and the through-wall terminals connected to the charging positive and negative wire harnesses (31) and the discharging positive and negative wire harnesses (32) are all located.

6. The lithium battery pack for the power unit of the forklift engineering machinery vehicle according to claim 1, characterized in that, It also includes a charging plug and a base (4), the base (4) being detachably connected to the upper end of the lithium battery pack (2), and the charging plug being used to install onto the base (4).

7. The lithium battery pack for the power unit of the forklift engineering machinery vehicle according to claim 6, characterized in that, The base (4) is provided with a 5° elevation angle.

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