Truck lithium battery box body and lithium battery

Abstract

The truck lithium battery box body comprises an upper cover and a lower box body, the upper cover and the lower box body are both of an injection molding structure, the upper cover is provided with a first containing cavity, a first reinforcing part is formed on the cavity wall of the first containing cavity, and a second reinforcing part is formed on the cavity wall of the first containing cavity. The lower box body is provided with a first containing cavity, a first positioning part is formed on the periphery of the edge of the bottom of the first containing cavity, the lower box body is provided with a second containing cavity, a second reinforcing part is formed on the cavity wall of the second containing cavity, and a second positioning part matched with the first positioning part is formed on the periphery of the edge of the top of the second containing cavity. And the upper cover and the lower box body are detachably connected through positioning matching of the first positioning part and the second positioning part. The truck lithium battery box solves the technical problems that an existing truck lithium battery box is large in weight, does not meet the requirement for light weight, and is complex to assemble and inconvenient to maintain.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of lithium battery, especially a truck lithium battery box and lithium battery. BACKGROUND

[0002] Lithium battery has occupied a certain position in the automobile industry, with the increase of demand, the truck also began to gradually promote the use of lithium battery, which puts forward higher requirements for the safety performance of the battery pack. The current market truck lithium battery is basically fixed in the way, that is, the bottom of the truck is limited and fixed, this fixed installation method has certain requirements for the strength of the battery box and the box cover, so the current truck lithium battery box is generally made of metal material, for example, the authorized announcement No. CN215497004U discloses a Chinese utility model patent "truck starting lithium battery pole plastic base and metal outer box connection structure". However, the lithium battery box made of metal material meets the strength requirement, but does not meet the current whole vehicle lightweight concept, increases the weight of the whole vehicle, and the assembly of the lithium battery itself is also troublesome. Therefore, it is necessary to design a new type of lithium battery box for truck, which meets the strength requirement and realizes the lightweight demand of the whole vehicle, and is convenient for later maintenance. SUMMARY

[0003] Therefore, the utility model provides a truck lithium battery box and lithium battery to solve the technical problem that the existing truck lithium battery box has the problems of heavy weight, not meeting the lightweight requirement, complex assembly and inconvenient maintenance.

[0004] To achieve the above technical purpose, the utility model adopts the following technical scheme:

[0005] A truck lithium battery box comprises:

[0006] An upper cover has a first accommodating cavity, a first reinforcing part is formed on the cavity wall of the first accommodating cavity, and a first positioning part is formed around the bottom edge of the first accommodating cavity;

[0007] A lower box has a second accommodating cavity, a second reinforcing part is formed on the cavity wall of the second accommodating cavity, a second positioning part matched with the first positioning part is formed around the top edge of the second accommodating cavity, and the upper cover and the lower box are detachably connected through the positioning cooperation of the first and second positioning parts;

[0008] The upper cover and the lower box are both injection molding structures.

[0009] In some embodiments, the bottom edge of the first accommodating cavity and the top edge of the second accommodating cavity are both formed with threaded holes for detachably connecting the upper cover and the lower box.

[0010] In some embodiments, the first reinforcing part comprises a plurality of first reinforcing ribs extending from the inner wall of the top of the first accommodating cavity to the bottom of the first accommodating cavity, and the second reinforcing part comprises a plurality of second reinforcing ribs extending from the inner side wall of the second accommodating cavity to the center of the second accommodating cavity.

[0011] In some embodiments, the width of the second reinforcing ribs on the two inner side walls of the long side of the second accommodating cavity is greater than the width of the second reinforcing ribs on the two inner side walls of the short side of the second accommodating cavity.

[0012] In some embodiments, the first positioning part comprises a plurality of positioning columns extending from the edge of the bottom of the first accommodating cavity in a direction away from the first accommodating cavity, and the second positioning part comprises a plurality of positioning holes extending from the edge of the top of the second accommodating cavity in a direction close to the second accommodating cavity, the positioning holes corresponding to the positioning columns one by one.

[0013] In some embodiments, one side of the top of the first accommodating cavity is formed with a valve hole for installing a gas permeable valve, and the other side of the top of the first accommodating cavity is formed with a communication port and terminal outlets of positive and negative electrodes.

[0014] In some embodiments, the bottom of the second accommodating cavity is formed with a fixing hole for fixing a battery module, and the outer parts of a pair of opposite side walls of the second accommodating cavity are respectively formed with a connecting hole.

[0015] In some embodiments, a handle is further included, and the handle is installed in the connecting hole.

[0016] In another aspect, the utility model provides a truck lithium battery, including battery module and above-mentioned lithium battery box, battery module installs inside the lithium battery box.

[0017] In some embodiments, the bottom of the battery module is formed with a waist-shaped hole for fixing with the lithium battery box.

[0018] Compared with the prior art, the utility model has the beneficial effects mainly including:

[0019] The truck lithium battery box and the lithium battery provided by the utility model can guarantee the strength through the first reinforcing part and the second reinforcing part, on the basis of which, the upper cover and the lower box body are both injection molding structures, which greatly reduces the overall quality of the lithium battery and meets the requirement of vehicle lightweighting. In addition, the upper cover and the lower box body are detachably connected through the positioning and cooperation of the first positioning part and the second positioning part, which can guarantee that the box body is not deviated during assembly and is easy to install and disassemble, facilitating later maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1It is the overall structure schematic diagram of truck lithium battery of the utility model;

[0021] Figure 2 It is the structure schematic diagram of upper cover of the utility model;

[0022] Figure 3 It is the structure schematic diagram of lower box body of the utility model;

[0023] Figure 4 It is the structure schematic diagram of battery module of the utility model.

[0024] As shown in the figure:

[0025] 100, upper cover, 101, first reinforcing part, 102, first positioning part, 103, valve hole, 104, communication port, 105, terminal outlet;

[0026] 200, lower box body, 201, second reinforcing part, 202, second positioning part, 203, fixing hole, 204, connecting hole, 205, handle;

[0027] 300, battery module, 301, battery cell, 302, end plate, 303, steel band, 304, side plate, 305, support frame. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail by combining with the drawings and examples. It should be understood that the specific examples described here are only used to explain the utility model, and are not used to limit the utility model.

[0029] In view of the technical problems that the lithium battery box for truck is usually made of metal material to increase the weight of the whole vehicle and is inconvenient for later maintenance, the utility model provides a truck lithium battery box, which can realize the demand of lightweight of the whole battery box on the basis of meeting the strength.

[0030] As Figure 1 Indicated, the utility model provides a kind of truck lithium battery box, including upper cover 100 and lower box body 200, the upper cover 100 and lower box body 200 are both injection molding structure, wherein, the upper cover 100 has first accommodating cavity, the cavity wall of first accommodating cavity is formed with first reinforcing part 101, the bottom edge of first accommodating cavity is formed with first positioning part 102 around;The second accommodating cavity of lower box body 200 has second reinforcing part 201, the cavity wall of second accommodating cavity is formed with second reinforcing part 201, the top edge of second accommodating cavity is formed with the second positioning part 202 compatible with first positioning part 102, and the upper cover 100 and the lower box body 200 are detachably connected together by the positioning cooperation of first positioning part 102 and second positioning part 202.

[0031] The truck lithium battery box provided by the utility model is provided with the first reinforcing part 101 in the first accommodating cavity formed on the upper cover 100 and the second reinforcing part 201 in the second accommodating cavity of the lower box body 200, so that the overall strength of the lithium battery box can be ensured; on this basis, the upper cover 100 and the lower box body 200 are both injection molded, and the plastic material can greatly reduce the weight, so that the requirement of lightening the whole vehicle can be met; in addition, the upper cover 100 and the lower box body 200 of the utility model are positioned and matched through the first positioning part 102 and the second positioning part 202, so that the misalignment during assembly is avoided, the installation and disassembly are simple, and the post-maintenance is facilitated.

[0032] In one embodiment, as shown in Figure 2 the bottom edge of the first accommodating cavity and the top edge of the second accommodating cavity are all formed with threaded holes for detachably connecting the upper cover 100 and the lower box body 200, that is, after the positions of the upper cover 100 and the lower box body 200 are determined through the first positioning part 102 and the second positioning part 202, the upper cover 100 and the lower box body 200 are fixed by inserting bolts into the threaded holes.

[0033] In one embodiment, as shown in Figure 2 the first reinforcing part 101 includes a plurality of first reinforcing ribs extending from the top inner wall of the first accommodating cavity to the bottom of the first accommodating cavity, and the first positioning part 102 includes a plurality of positioning columns extending from the four sides of the bottom edge of the first accommodating cavity to the direction away from the first accommodating cavity.

[0034] In one embodiment, a valve hole 103 for installing a ventilation valve is formed on one side of the top of the first accommodating cavity, and a communication port 104 and a terminal outlet 105 of the positive and negative poles are formed on the other side of the top of the first accommodating cavity, so as to facilitate the installation of the communication and the total positive and total negative of the battery module 300 outside.

[0035] In one embodiment, as shown in Figure 3 the second reinforcing part 201 includes a plurality of second reinforcing ribs extending from the inner side wall of the second accommodating cavity to the center of the second accommodating cavity, and the second positioning part 202 includes a plurality of positioning holes extending from the four sides of the top edge of the second accommodating cavity to the direction close to the second accommodating cavity, the positioning holes and the positioning columns one-to-one correspond, and when assembling, the positioning columns are inserted into the positioning holes to prevent the upper cover 100 and the lower box body 200 from being misaligned.

[0036] In one embodiment, the width of the second reinforcing rib on the two inner side walls of the long side of the second accommodating cavity is greater than the width of the second reinforcing rib on the two inner side walls of the short side of the second accommodating cavity, so as to prevent the deformation of the box wall.

[0037] In one of the embodiments, the bottom of the second accommodating cavity is formed with a fixing hole 203 for fixing the battery module 300, and a group of opposite side walls of the second accommodating cavity are respectively formed with connecting holes 204.

[0038] In one of the embodiments, the lower box body 200 further comprises a handle 205, which is installed on the connecting hole 204.

[0039] In addition, the utility model further provides a truck lithium battery, including battery module 300 and the lithium battery box of above-mentioned technical scheme, battery module 300 is installed in the inside of lithium battery box, that is, lithium battery module 300 is installed in the cavity formed by the first accommodating cavity of upper cover 100 and the second accommodating cavity of lower box body 200.

[0040] In one of the embodiments, as shown in the figure, Figure 4 The battery module 300 is composed of an electric core 301, an end plate 302, a steel belt 303, a side plate 304 and a support frame 305. The end plate 302 and the side plate 304 are profiled materials, and the top end of the end plate 302 is reserved with a steel belt groove for clamping during the installation of the steel belt 303. The end plate 302 and the side plate 304 are both reserved with rivet holes for the riveting and fixing of the side plate 304 and the end plate 302. The side surface of the end plate 302 is provided with a lifting hole, which can be used for lifting the module into the box. In addition, the end plate 302 is formed with a waist-shaped hole on the cross section, which is matched with the fixing hole 203 of the lower box body 200, and is used for the fixing of the battery module 300 and the lower box body 200. The bottom of the side plate 304 is provided with a flange, which can be buckled on the bottom of the electric core during the installation, and is used for limiting the displacement of the electric core. The support frame 305 is also a sheet metal part, and both ends thereof are reserved with holes for the fixing of the end plate 302. Different positions of the support frame 305 are reserved with studs, which are used for the installation of corresponding electrical components and protection systems. Meanwhile, both sides of the support frame 305 are also provided with flanges, which are placed above the electric core, and are used for limiting the position of the electric core in the Z-axis direction. In addition, the upper surface of the support frame 305 is provided with a support block, which is used for the pressure support during the fixing and installation of the battery on the truck, so as to avoid the deformation of the upper cover 100 due to excessive pressure.

[0041] The utility model provides a kind of truck lithium battery when assembling, first, end plate 302 is placed in the positive face of electric core, arrange good electric core according to certain sequence, and carry out side-by-side placement, complete through extruding two ends end plate 302, buckle both sides side plate 304 and carry out rivet embedding, complete after steel band 303 is inserted into the bottom end groove of end plate 302;After battery module 300 is assembled, the welding of busbar and electric core tab is completed by the mode of laser welding;After completion, battery module 300 is hoisted into lower box body 200 by the lifting hole on end plate 302, the second reinforcing portion 201 of lower box body 200 can be used for the limiting of battery module 300;Support frame 305 is placed on the electric core of battery module 300 and is placed in end plate 302 fixed hole alignment, the fixed hole of lower box body 200 bottom is fixedly connected by the waist-shaped hole of nut and end plate 302;After battery module 300 is installed into box, sealing ring is placed in the sealing groove reserved on the upper surface of lower box body 200;Upper cover 100 is completed with lower box body 200 by first positioning portion 102 and second positioning portion 202 and bolt The box assembly of assembling;Finally, handle is installed at both ends of lower box body 200, to facilitate the carrying of battery box.

[0042] The above-described specific embodiments of the utility model do not constitute a limitation on the scope of protection of the utility model. Any other corresponding changes and modifications made in accordance with the technical concept of the utility model should be included within the scope of protection of the claims of the utility model.

Claims

1. A truck lithium battery box, characterized in that, The application relates to a lithium battery box. The upper cover has a first accommodating cavity, and a first reinforcing part is formed on the cavity wall of the first accommodating cavity; a first positioning part is formed around the bottom edge of the first accommodating cavity; The lower box body has a second accommodating cavity, and a second reinforcing part is formed on the cavity wall of the second accommodating cavity; a second positioning part matched with the first positioning part is formed around the top edge of the second accommodating cavity; the upper cover and the lower box body are detachably connected through the positioning cooperation of the first positioning part and the second positioning part; The upper cover and the lower box body are both injection molded structures. The first positioning part comprises a plurality of positioning columns extending away from the first accommodating cavity from around the bottom edge of the first accommodating cavity; the second positioning part comprises a plurality of positioning holes extending towards the second accommodating cavity from around the top edge of the second accommodating cavity; the positioning holes correspond to the positioning columns one by one.

2. The truck lithium battery box of claim 1, wherein, The bottom edge of the first accommodating cavity and the top edge of the second accommodating cavity are both provided with threaded holes for detachably connecting the upper cover and the lower box body.

3. The truck lithium battery box of claim 1, wherein, The first reinforcing part comprises a plurality of first reinforcing ribs extending from the top inner wall of the first accommodating cavity to the bottom of the first accommodating cavity; the second reinforcing part comprises a plurality of second reinforcing ribs extending from the inner side wall of the second accommodating cavity to the center of the second accommodating cavity.

4. The truck lithium battery box of claim 3, wherein, The width of the second reinforcing ribs on the two inner side walls of the long side of the second accommodating cavity is greater than the width of the second reinforcing ribs on the two inner side walls of the short side of the second accommodating cavity.

5. The truck lithium battery box of claim 1, wherein, One side of the top of the first accommodating cavity is provided with a valve hole for mounting a gas permeation valve; the other side of the top of the first accommodating cavity is provided with a communication port and positive and negative terminal outlets.

6. The truck lithium battery box of claim 1, wherein, The bottom of the second accommodating cavity is provided with a fixing hole for fixing a battery module; a group of opposite side walls of the second accommodating cavity are respectively provided with connecting holes.

7. The truck lithium battery box of claim 6, wherein, A handle is further arranged on the connecting holes.

8. A truck lithium battery, characterized by, The application further relates to a lithium battery box and a battery module.

9. The truck lithium battery of claim 8, wherein, The bottom of the battery module is provided with a waist-shaped hole for fixing the lithium battery box. The bottom of the battery module is provided with a waist-shaped hole for fixing the lithium battery box.

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