Battery module for a forklift truck

Abstract

The utility model provides a kind of battery module for fork truck, and the battery module for fork truck includes: battery pack, battery pack includes multiple single battery core;Two first side plates, two first side plates are respectively arranged at the left and right ends of battery pack;Two second side plates, two second side plates are respectively arranged at the front and rear ends of battery pack, two second side plates and two first side plates can be enclosed to form frame body, to set battery pack;Fastener, fastener connects adjacent first side plate and second side plate.According to the battery module for fork truck of the utility model, battery pack can be better protected and fixed.

Description

Technical Field

[0001] This utility model relates to the field of new energy batteries, and more specifically, to a battery module for forklifts. Background Technology

[0002] The battery pack provides power to the forklift, enabling it to operate smoothly.

[0003] The existing battery pack's internal battery module includes end plates set on both sides of the battery pack and one or two steel strips surrounding the steel plate, which fix the end plates and battery pack in place.

[0004] However, during the use of the battery pack, the battery pack will expand due to repeated use. The expansion will generate force, and the stress point will appear at the corresponding position of the steel strip. This will result in uneven stress and generate great local extrusion pressure on the battery pack and steel strip, which can easily cause damage to the battery pack and steel strip. Utility Model Content

[0005] This invention provides a new technical solution for battery modules used in forklifts, which can at least solve the problem of battery packs being damaged by expansion forces in the prior art.

[0006] According to this utility model, a battery module for forklifts is provided, the battery module comprising:

[0007] A battery pack consists of multiple individual battery cells.

[0008] Two first side plates are respectively disposed at the left and right ends of the battery pack;

[0009] Two second side plates are respectively disposed at the front and rear ends of the battery pack. The two second side plates and the two first side plates can be enclosed to form a frame to house the battery pack.

[0010] Fasteners that connect adjacent first side plates and second side plates.

[0011] Furthermore, the bottom of the first side plate has a first folded edge that bends inward, and the bottom of the battery pack is supported by the first folded edge.

[0012] Furthermore, the edges of the second side plate are all bent outwards to form a second folded edge.

[0013] Furthermore, both the front and rear ends of the first side plate have extended edges that overlap with the second folded edge, and the fastener connects the extended edges and the second folded edge.

[0014] Furthermore, a first mounting hole is formed on the extended edge, and a second mounting hole corresponding to the first mounting hole is formed on the second folded edge. The fastener includes a bolt and a nut that cooperate with each other. The bolt passes through the first mounting hole and the second mounting hole and is threadedly connected to the nut.

[0015] Furthermore, the battery module also includes:

[0016] A separator is disposed on the side of the battery pack, and the first side plate and the second side plate are both connected to the battery pack through the separator.

[0017] Furthermore, the first side plate has a first convex bulge protruding outwards, and the second side plate has a second convex bulge protruding outwards.

[0018] Furthermore, the multiple individual battery cells are arranged in a front-to-back pattern, and the battery module further includes:

[0019] The first electrode plate is connected to the positive electrode of the single cell located at the rear end;

[0020] The second plate connects the positive and negative terminals of adjacent individual cells, so that the individual cells are connected in series.

[0021] The third electrode is connected to the negative terminal of the single cell located at the front end;

[0022] Positive electrode connector, which is connected to the first electrode plate;

[0023] The negative terminal connector is connected to the third electrode plate.

[0024] Furthermore, the battery module also includes an FPC acquisition harness, which includes:

[0025] Multiple connecting lines, the first ends of which are respectively connected to the first plaster, the second plaster and the third plaster;

[0026] A connector that connects to the second end of the plurality of connecting wires.

[0027] Furthermore, the battery module also includes:

[0028] A separator covers the top of the battery pack, the first plate, the third plate, and the second plate, and has cutouts at the positions of the first plate, the third plate, and the second plate. The connecting line is disposed on the separator.

[0029] A sealing plate that covers the top of the partition.

[0030] According to the battery module for forklifts of this utility model, two opposing first side plates are respectively provided at the left and right ends of the battery pack, and two opposing second side plates are respectively provided at the front and rear ends of the battery pack. The first and second side plates are connected by fasteners, so that the two first side plates and two second side plates form a frame surrounding the battery pack. Therefore, the two first side plates and two second side plates can evenly bear the expansion force of the battery pack, thereby buffering the expansion force and better protecting and securing the battery pack. This avoids the problem of damage to the battery pack and steel strip caused by conventional end plates and steel strips when the battery pack is subjected to expansion forces.

[0031] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0032] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0033] Figure 1 This is a structural diagram of a battery module for a forklift according to an embodiment of the present invention;

[0034] Figure 2 This is a structural diagram of the first side plate and the second side plate according to an embodiment of the present utility model;

[0035] Figure 3 It is based on Figure 1 A structural diagram of the battery module for forklifts in an embodiment, with the sealing plate removed.

[0036] Figure label:

[0037] 110. First side plate; 111. First folded edge; 112. First protrusion; 113. First mounting hole; 120. Second side plate; 121. Second folded edge; 122. Second protrusion; 123. Second mounting hole; 130. Fastener; 210. Sealing plate; 220. Partition plate; 231. First tab; 232. Second tab; 233. Third tab; 241. Connector; 242. Connecting wire; 251. Positive terminal connector; 252. Negative terminal connector. Detailed Implementation

[0038] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0039] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0040] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0041] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0042] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0043] The battery module for forklifts according to an embodiment of the present invention will now be described in detail with reference to the accompanying drawings.

[0044] like Figures 1 to 3 As shown, the battery module according to an embodiment of the present invention includes a battery pack, two first side plates 110, two second side plates 120, and fasteners 130.

[0045] First, let's explain the battery pack, which consists of multiple individual battery cells.

[0046] Next, the two first side panels 110 and the two second side panels 120 will be described. The two first side panels 110 are respectively disposed at the left and right ends of the battery pack. The two second side panels 120 are respectively disposed at the front and rear ends of the battery pack. The two second side panels 120 and the two first side panels 110 can be joined to form a frame to house the battery pack. The front, rear, left, and right directions can be as follows: Figure 1 As shown, the other accompanying figures are consistent with this.

[0047] like Figure 1 and Figure 2 As shown, a frame is formed by combining two opposing first side plates 110 and two opposing second side plates 120. The frame surrounds the battery pack, thereby providing better protection for the battery pack.

[0048] Finally, fastener 130 is described. Fastener 130 connects the adjacent first side plate 110 and second side plate 120. Fastener 130 can be a rivet, bolt / nut, clamp, etc.

[0049] The fastener 130 enables a tight connection between the first side plate 110 and the second side plate 120, making the frame composed of the two first side plates 110 and the two second side plates 120 more stable.

[0050] The battery module for forklifts described above has two opposing first side plates 110 at each of the left and right ends of the battery pack, and two opposing second side plates 120 at each of the front and rear ends of the battery pack. The first side plates 110 and the second side plates 120 are connected by fasteners 130, thus forming a frame that surrounds the battery pack. This allows the two first side plates 110 and the two second side plates 120 to evenly bear the expansion force of the battery pack, thereby buffering the expansion force and effectively protecting and securing the battery pack. This avoids the problem of damage to the battery pack and steel strips caused by conventional end plates and steel strips when the battery pack is subjected to expansion forces.

[0051] In some embodiments of this utility model, the bottom of the first side plate 110 is formed with a first folded edge 111 that bends inward, and the bottom of the battery pack is supported by the first folded edge 111.

[0052] like Figure 2 As shown, the bottom edges of the two first side plates 110 are bent inward (i.e., the bottom edge of the first side plate 110 on the left side bends to the right, and the bottom edge of the first side plate 110 on the right side bends to the left) to form the first folded edge 111, which forms a bottom support that can support the bottom of the battery pack, thus enabling it to better support the battery pack. Moreover, this structure is relatively simple.

[0053] Furthermore, the edges of the second side plate 120 are all bent outward to form a second folded edge 121.

[0054] like Figure 1 and Figure 2 As shown, the edges of both second side plates 120 are bent outwards (i.e., the four edges of the second side plate 120 at the front end are bent forward, and the four edges of the second side plate 120 at the rear end are bent backwards) to form a second folded edge 121. The second side plate 120 can be easily connected to the first side plate 110 through the second folded edge 121.

[0055] Furthermore, both the front and rear ends of the first side plate 110 are formed with extended edges that overlap with the second folded edge 121, and the fastener 130 connects the extended edges and the second folded edge 121.

[0056] like Figure 2 As shown, the extended edge and the second folded edge 121 of the first side plate 110 have an L-shaped overlap (both the side and bottom edges of the first side plate 110 are extended). The fastener 130 connects the extended edge and the second folded edge 121, thereby making the adjacent first side plate 110 and second side plate 120 firmly connected and avoiding interference of the fastener 130 with the battery pack.

[0057] Furthermore, a first mounting hole 113 is formed on the extended edge, and a second mounting hole 123 corresponding to the first mounting hole 113 is formed on the second folded edge 121. The fastener 130 includes a bolt and a nut that cooperate with each other. The bolt passes through the first mounting hole 113 and the second mounting hole 123 and is threadedly connected to the nut.

[0058] like Figure 2 As shown, the first mounting hole 113 of the extended side is aligned with the second mounting hole 123 of the second folded edge 121. The bolt passes through the first mounting hole 113 and the second mounting hole 123, and the nut locks the end of the bolt, thereby making the extended side of the first side plate 110 and the second folded edge 121 of the second side plate 121 tightly connected, and thus making the first side plate 110 and the second side plate 120 tightly connected.

[0059] In some embodiments of this invention, the battery module further includes a separator. The separator is disposed on the side of the battery pack, and both the first side plate 110 and the second side plate 120 are connected to the battery pack through the separator. The separator can be a PI film (polyimide film) or similar material.

[0060] The separator membrane provides a buffer between the first side plate 110 and the second side plate 120, better protecting the battery pack. Furthermore, it offers good electrical insulation, reducing external interference to the battery pack.

[0061] In some embodiments of the present invention, the first side plate 110 is formed with a first protrusion 112 protruding outward, and the second side plate 120 is formed with a second protrusion 122 protruding outward.

[0062] like Figure 1 and Figure 2 The first side plate 110 has a "well"-shaped first protrusion 112, and the second side plate 120 has a "well"-shaped second protrusion 122. The first protrusion 112 and the second protrusion 122 can increase the strength of the first side plate 110 and the second side plate 120. Moreover, when an external object impacts the first side plate 110 and the second side plate 120, the first protrusion 112 and the second protrusion 122 can provide cushioning. Even if the second protrusion 122 and the second protrusion 122 are deformed or damaged, the battery pack can still remain intact, thereby better protecting the battery pack.

[0063] In some embodiments of this invention, multiple individual battery cells are arranged in a front-to-back configuration. The battery module further includes a first electrode plate 231, a second electrode plate 232, a third electrode plate 233, a positive terminal connector 251, and a negative terminal connector 252. The first electrode plate 231 is connected to the positive terminal of the individual battery cell located at the rear end. The second electrode plate 232 connects the positive and negative terminals of adjacent individual battery cells, thereby connecting the individual battery cells in series. The third electrode plate 233 is connected to the negative terminal of the individual battery cell located at the front end. The positive terminal connector 251 is connected to the first electrode plate 231. The negative terminal connector 252 is connected to the third electrode plate 233.

[0064] like Figure 3 As shown, four individual battery cells are arranged in front of and behind each other. The four individual battery cells are connected in series through the positive terminal 251. The positive terminal is led out through the first tab 231 and the positive terminal 251, and the negative terminal is led out through the third tab 233 and the negative terminal 252. This makes it convenient for the battery module to supply power to the outside world and for the outside world to charge the battery module.

[0065] It should be noted that the number of battery packs is not limited above; there may be five, six, or other battery packs, all of which should be understood within the scope of this utility model.

[0066] Furthermore, the battery module also includes an FPC acquisition harness, which includes multiple connecting wires 242 and a connector 241. The first ends of the multiple connecting wires 242 are respectively connected to a first contact plate 231, a second contact plate 232, and a third contact plate 233. The connector 241 is connected to the second ends of the multiple connecting wires 242.

[0067] like Figure 2 As shown, multiple connecting lines 242 are respectively connected to the first plate 231, the third plate 233 and the second plate 232, so as to be connected to each battery pack and obtain the signals (voltage, current, temperature, etc.) of each battery pack. The multiple connecting lines 242 are connected through the connector 241, which can be conveniently connected to the battery management system (BMS).

[0068] Optionally, the first end of the connecting wire can be connected to the first plate 231, the third plate 233, or the second plate 232 via a nickel plate. An NTC (thermistor) is provided on the nickel plate for temperature acquisition.

[0069] Furthermore, the battery module also includes a separator 220 and a sealing plate 210. The separator 220 covers the top of the battery pack, the first tab 231, the third tab 233, and the second tab 232, and has cutouts at the positions of the first tab 231, the third tab 233, and the second tab 232, with connecting lines 242 disposed on the separator 220. The sealing plate 210 covers the separator 220.

[0070] The partition 220 has perforations at the positions of the first pad 231, the third pad 233, and the second pad 232, which can avoid the connection point of the connecting line 242 connecting the first pad 231, the third pad 233, and the second pad 232, thus avoiding interference. The partition 220 and the sealing plate 210 can cover the connecting line 242, thereby better protecting the connecting line 242.

[0071] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A battery module for forklifts, characterized in that, The battery module includes: The battery pack includes multiple individual battery cells; Two first side plates (110) are respectively disposed at the left and right ends of the battery pack; Two second side plates (120) are respectively disposed at the front and rear ends of the battery pack. The two second side plates (120) and the two first side plates (110) can be enclosed to form a frame to house the battery pack. Fastener (120) connects the adjacent first side plate (110) and second side plate (120).

2. The battery module for forklifts according to claim 1, characterized in that, The bottom of the first side plate (110) has a first folded edge (111) that bends inward, and the bottom of the battery pack is supported by the first folded edge (111).

3. The battery module for forklifts according to claim 2, characterized in that, The edges of the second side plate (120) are all bent outward to form a second folded edge (121).

4. The battery module for forklifts according to claim 3, characterized in that, Both ends of the first side plate (110) have extended edges that overlap with the second folded edge (121), and the fastener (120) connects the extended edges and the second folded edge (121).

5. The battery module for forklifts according to claim 4, characterized in that, A first mounting hole (113) is formed on the extended edge, and a second mounting hole (123) corresponding to the first mounting hole (113) is formed on the second folded edge (121). The fastener (120) includes a bolt and a nut that cooperate with each other. The bolt passes through the first mounting hole (113) and the second mounting hole (123) and is threadedly connected to the nut.

6. The battery module for forklifts according to claim 1, characterized in that, The battery module also includes: A separator is disposed on the side of the battery pack, and the first side plate (110) and the second side plate (120) are both connected to the battery pack through the separator.

7. The battery module for forklifts according to claim 1, characterized in that, The first side plate (110) has a first convex bulge (112) protruding outward, and the second side plate (120) has a second convex bulge (122) protruding outward.

8. The battery module for forklifts according to claim 1, characterized in that, The battery module further includes: (The multiple individual battery cells are arranged in a front-to-back pattern.) The first electrode plate (231) is connected to the positive electrode of the single cell located at the rear end; The second plate (232) connects the positive and negative terminals of adjacent individual cells so that the individual cells are connected in series. The third electrode (233) is connected to the negative electrode of the single cell located at the front end; Positive electrode connector (251), which is connected to the first electrode plate (231); Negative terminal (252), which is connected to the third bar (233).

9. The battery module for forklifts according to claim 8, characterized in that, The battery module also includes an FPC acquisition harness, which includes: Multiple connecting lines (242), the first ends of which are respectively connected to the first plaster (231), the second plaster (232) and the third plaster (233); A connector (241) is connected to the second end of the plurality of connecting lines (242).

10. The battery module for forklifts according to claim 9, characterized in that, The battery module also includes: A separator (220) covers the top of the battery pack, the first plate (231), the third plate (233) and the second plate (232), and has cutouts at the positions of the first plate (231), the third plate (233) and the second plate (232). A connecting line (242) is provided on the separator (220). A sealing plate (210) covers the partition plate (220).

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