CN217158467U

CN217158467U - Pack case for energy storage

Info

Publication number: CN217158467U
Application number: CN202220726042.3U
Authority: CN
Inventors: 江有强; 易昊昊; 陈郑阳
Original assignee: Hubei Eve Power Co Ltd
Current assignee: Hubei Eve Power Co Ltd
Priority date: 2022-03-30
Filing date: 2022-03-30
Publication date: 2022-08-09
Anticipated expiration: 2032-03-30

Abstract

The utility model belongs to the technical field of the battery, a pack case for energy storage is disclosed. This pack case for energy storage includes case lid, lower box, front panel and a plurality of electric core, goes up the case lid and connects with lower box lock and form one end open-ended installation cavity, and a plurality of electric cores are installed in the installation cavity, the front panel shutoff in the opening. This pack case for energy storage has better heat dissipation function, when guaranteeing the life of electric core, can reduce the use of spare part, improves the packaging efficiency, reduction in production cost.

Description

Pack case for energy storage

Technical Field

The utility model relates to the technical field of batteries, especially, relate to a pack case for energy storage.

Background

At present, most battery enterprises fix battery modules in a battery box by a locking screw grouping mode or a battery core welding process to form a battery pack. This kind of mode of uniting easy operation, but the battery package radiating effect after the equipment is relatively poor, and has the too high condition of local temperature, can not dispel the heat automatically and adjust, seriously influences the life of electric core. The battery pack has certain potential safety hazard in long-term use.

Therefore, it is desirable to provide a pack box for energy storage to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a pack case for energy storage has better heat dissipation function, when guaranteeing the life of electric core, can reduce the use of spare part, improves packaging efficiency, reduction in production cost.

To achieve the purpose, the utility model adopts the following technical proposal:

a pack box for energy storage, which comprises an upper box cover, a lower box body, a front panel and a plurality of electric cores,

the upper box cover and the lower box body are connected in a buckling mode to form a mounting cavity with an opening at one end, the battery cores are mounted in the mounting cavity, and the front panel is plugged in the opening.

Optionally, the plurality of battery cells are bonded to the bottom wall of the lower box body through a first adhesive.

Optionally, the first colloid is a heat-conducting glue.

Optionally, a plurality of the battery cells are bonded through a second colloid to form a battery cell module.

Optionally, along the length direction of the battery cell module, a limiting part is arranged between the inner side wall of the lower box body and the battery cell module and used for fixing the battery cell module.

Optionally, still be equipped with guide structure on the inside wall of box down for the direction the installation of electricity core module.

Optionally, the guide structure is a guide plate, the guide plate and the side wall of the lower box body are arranged at an included angle, and the guide plate faces towards the bottom of the lower box body.

Optionally, a limiting boss is convexly arranged on the inner side wall of the upper box cover, and the battery cell module is fixed between the limiting boss and the front panel along the width direction of the battery cell module.

Optionally, the battery cell module further comprises a barrier strip, wherein two ends of the barrier strip are respectively connected with the inner side wall of the lower box body, and the battery cell module is fixed between the barrier strip and the limiting bosses along the width direction of the battery cell module.

Optionally, the solar panel further comprises a battery management system, the battery management system is arranged in the front panel, and the outer wall of the front panel is provided with a plurality of heat dissipation grooves.

Optionally, the upper box cover and the lower box body are connected through riveting.

The utility model has the advantages that:

the battery cell is directly fixed in the mounting cavity formed by buckling the upper box cover and the lower box body, so that parts for assembling the battery cell into a module are omitted, on one hand, the production cost of parts and the working strength of staff are reduced, and the problem of tolerance assembly matching caused by excessive parts is solved; on the other hand, the assembly efficiency is improved, and further the production efficiency is improved; on the other hand, the problems of poor assembly are reduced, and the production reject ratio is reduced.

Through setting up first colloid with electric core direct and lower box bonding, the heat that can make electric core produce directly transmits for box down through first colloid, then in time distributes away through lower box, can avoid electric core because of the problem of the high temperature that charge-discharge arouses, and the heat that makes electric core produce can in time transmit the outside, makes the temperature field in the battery package more even. Meanwhile, natural heat dissipation is adopted, so that no noise is generated, and the noise pollution to the environment is reduced.

Drawings

Fig. 1 is a schematic structural diagram of a pack box for energy storage provided by the present invention;

FIG. 2 is a schematic structural view of the lower box body provided by the present invention;

fig. 3 is an assembly view of the lower box body and the battery cell module provided by the present invention.

In the figure:

100. an upper box cover; 110. a limiting boss; 200. a lower box body; 210. reinforcing ribs; 220. a lug; 300. a front panel; 310. a heat sink; 400. an electric core; 500. a battery cell module; 600. a stopper; 700. a guide structure; 800. blocking strips; 900. a handle.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

Specifically, as shown in fig. 1, the pack box for energy storage includes an upper box cover 100, a lower box body 200, a front panel 300, and a plurality of battery cells 400, where the upper box body and the lower box body 200 are fastened and connected to form an installation cavity, and the battery cells 400 are disposed in the installation cavity. The mounting cavity has an opening at one end, and the front panel 300 is disposed at the opening for blocking the opening. Through with a plurality of electric cores snap-on in the installation cavity, saved and assembled the spare part of module with electric core, reduced the use of spare part.

Preferably, a plurality of battery cores 400 can be directly bonded on the bottom wall of the lower box body 200 through the first colloid, so that the heat of the battery cores 400 can be dissipated out through the lower box body 200 in time, the battery cores 400 are ensured to be at an appropriate working temperature, and the service life of the battery cores 400 is prolonged.

Further, the first colloid may be a heat-conducting adhesive, which has good heat-conducting performance and heat dissipation performance, and is beneficial to ensuring that the battery cell 400 works at an appropriate temperature and prolonging the service life of the battery cell 400; on the other hand, the heat-conducting adhesive has better high-temperature resistance and low-temperature resistance, can ensure reliable working performance in high-temperature and low-temperature environments, and is beneficial to ensuring the connection stability of the battery cell 400 and the lower box body 200; in another aspect, the heat-conducting glue has excellent electrical properties, is aging-resistant, waterproof and shockproof, and is beneficial to improving the safety factor of the battery cell 400 in the use process and improving the use safety of the pack box for energy storage.

Further, in order to improve the installation efficiency and the installation difficulty between the battery cell 400 and the lower box 200, a plurality of battery cells 400 can be bonded by a second colloid to form the battery cell module 500. The battery cells 400 are grouped into the battery cell module 500 by using the second colloid, and compared with the existing battery cell 400 grouping technology, on one hand, many parts are omitted, and the production cost is reduced; on the other hand, the grouping mode of bonding the battery cells 400 by using the second colloid is simple to operate, and the production efficiency is improved; in another aspect, make electric core 400 be a holistic electric core module 500 in groups through the second colloid, can avoid appearing great rocking and influence the joint strength between aluminium bar and the electric core 400 (aluminium bar is used for the electricity between electric core 400 to be connected) because of transportation and handling, lead to electric core 400 to open a way, guarantee the operational reliability of above-mentioned pack case for energy storage.

Preferably, the second colloid may also be a heat-conducting adhesive, and the heat-conducting adhesive has better heat-conducting performance and heat dissipation performance, so that the uniformity of the temperature between the battery cells 400 is improved, and the service life of the battery cells 400 is prolonged.

Preferably, when being in groups into electric core module 500 through the second colloid with a plurality of electric cores 400, can adopt the tool to compress tightly electric core 400, make electric core 400 fully bond with the second colloid. Meanwhile, the pretightening force of the battery cell 400 in grouping can be reserved, so that the battery cell 400 is in a pre-compression state, the expansion force generated in the cyclic charge and discharge process of the battery cell 400 can be inhibited, and the service life of the battery cell 400 is prolonged.

Further, with continued reference to fig. 1, the battery management system may be disposed in the front panel 300, and this way of integrating the battery system into the front panel 300 can be beneficial to reducing the size of the energy storage pack box, so as to improve the energy density of the energy storage pack box; on the other hand, the use of parts is reduced, and the production cost is reduced.

Preferably, a plurality of heat dissipation grooves 310 may be formed on an outer wall of the front panel 300. The battery management system is generally provided with a heat sink, and heat of the heat sink is finally dissipated by heat exchange with the external environment through the outer wall of the front panel 300, so that compared with the case where the heat sink 310 is not provided, the provision of the heat sink 310 on the outer wall of the front panel 300 can increase the heat dissipation area of the outer wall of the front panel 300, and improve the heat dissipation efficiency of the front panel 300. In one embodiment, the front panel 300 may be manufactured by an aluminum die-casting process, which is efficient and suitable for mass production.

Alternatively, the heat dissipation groove 310 may be a straight line, a V-shaped, a wave-shaped, or the like, and may be arranged according to actual needs. The heat dissipation groove 310 may be disposed along the circumferential direction of the outer wall of the front panel 300, or may be disposed along the length direction of the front panel 300, and may be selected according to actual needs. In the present embodiment, the heat dissipation grooves 310 are linear and are disposed along the length direction of the outer wall of the front panel 300, and two rows are disposed.

Further, with reference to fig. 1, the upper box body and the lower box cover can be connected in a riveting manner, and compared with a welding connection manner, the problem of burrs and welding slag is reduced, and the reliability and the safety of the energy storage pack box are improved. Compared with the connection mode of adopting bolt connection, the installation procedure is simpler, the safety efficiency is improved, and the cost is reduced.

Alternatively, the shapes of the upper case cover 100 and the lower case 200 may be set according to actual needs. In this embodiment, the upper case cover 100 is L-shaped, and the lower case 200 is U-shaped, which is beneficial to assembling the battery cell module 500.

Preferably, in order to improve the sealing performance between the upper case cover 100 and the lower case body 200 and prevent external water from entering the installation cavity to break the battery cell 400, the upper case cover 100 may include a folded edge, and a sealant is disposed between the folded edge of the upper case cover 100 and the connection portion of the lower case body 200.

Further, with reference to fig. 1, a limiting boss 110 may be disposed on an inner wall of the upper case cover 100, and a protruding direction of the limiting boss 110 faces the battery cell 400, so that on one hand, the battery cell 400 can be prevented from shaking in the installation cavity, and the structural stability of the energy storage pack box is improved; on the other hand, the limiting boss 110 has certain deformability, impact can be relieved, damage to the electric automobile due to extrusion and collision is avoided, and the service life is long.

Further, with reference to fig. 1, the pack box for energy storage further includes a barrier strip 800, two ends of the barrier strip 800 are connected to two side walls of the lower box 200 respectively, so that the battery cell module 500 is fixed between the limiting boss 110 of the upper box cover 100 and the barrier strip 800 along the width direction of the battery cell module 500, that is, along the Y-axis direction in the drawing, and the battery cell module 500 is fixed by the barrier strip 800 and the limiting boss 110. When the installation of electric core module 500 is carried out, earlier with one side and the spacing boss 110 butt of electric core module 500, then the installation blend stop 800 can.

Preferably, as shown in fig. 2, a lug 220 may be provided on a sidewall of the lower case 200, so that the barrier 800 is connected to the lug 220, thereby achieving the purpose of fixing the barrier 800. Through setting up lug 220, can reduce the staff and install the degree of difficulty of blend stop 800, improve the installation effectiveness. In one embodiment, the barrier strips 800 can be connected with the side wall of the lower box 200 by welding, and the welding method has the advantages of simple operation, high processing efficiency and good sealing performance. In other embodiments, the barrier 800 may also be connected to the sidewall of the lower box 200 by riveting, and in this case, for convenience of installation, the barrier 800 may be provided with an L-shaped structure. Specifically, one end of the L-shaped barrier 800 is connected to the sidewall of the lower case 200, and the other end is connected to the barrier 800.

Preferably, with reference to fig. 2, since the energy storage pack box may be collided and squeezed during the driving of the electric vehicle, in order to improve the strength of the side wall of the lower box body 200, a reinforcing rib 210 may be provided on the side wall of the lower box body 200, so as to improve the strength of the lower box body 200, further improve the deformation resistance of the lower box body 200, and ensure the operational reliability of the energy storage pack box.

Further, can set up guide structure 700 on the inside wall of box 200 down, the installation of leading electric core module 500 is favorable to improving electric core module 500's installation effectiveness.

Optionally, with reference to fig. 2 continuously, in an embodiment, the guide structure 700 may be a guide plate, the guide plate is disposed to be inclined toward the bottom of the lower case 200, and an included angle is formed between the guide plate and a side wall of the lower case 200, so that the battery cell module 500 slides into the lower case 200 along the extending direction of the guide plate, and the quick installation of the battery cell module 500 can be achieved without precise positioning, thereby improving the installation efficiency.

Further, with reference to fig. 3, because there is a certain error during installation, in order to fix the battery cell module 500 better, a limiting member 600 may be disposed between the inner side wall of the lower case 200 and the battery cell module 500 along the length direction of the battery cell module 500, that is, along the X-axis direction in the drawing, so as to fix the battery cell module 500 better through the limiting member 600.

Preferably, the limiting member 600 may be interposed between the inner side wall of the lower case 200 and the battery cell module 500, and this method is convenient to mount and has high efficiency. The limiting member 600 may be provided in a plurality, and may be selected according to specific needs.

Preferably, the limiting member 600 may be a resin plate, the resin plate has insulation properties, and since the upper case lid 100 and the lower case body 200 are generally made of metal materials, heat dissipation is facilitated, therefore, the resin plate may prevent the electrical core 400 from short-circuiting in contact with the lower case body 200, and ensure the reliability of the work of the above-mentioned pack box for energy storage.

Further, an insulating member may be disposed between the upper case cover 100 and the battery cell module 500, so that the upper case cover 100 and the battery cell module 500 are insulated from each other, and the operational reliability of the energy storage pack box is improved.

Preferably, with continued reference to fig. 3, in one embodiment, a handle 900 may be further disposed on the outer sidewall of the lower case 200 to facilitate the carrying of the energy storage pack box.

As preferred technical scheme, can set up limit structure on the lateral wall of box 200 down, no longer rotate when handle 900 rotates limit structure department, can be convenient for the staff and carry, more humanized.

It is to be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A pack box for energy storage is characterized by comprising an upper box cover (100), a lower box body (200), a front panel (300) and a plurality of battery cells (400),

the upper box cover (100) and the lower box body (200) are connected in a buckling mode to form a mounting cavity with an opening at one end, the battery cores (400) are mounted in the mounting cavity, and the front panel (300) is plugged in the opening.

2. The pack box for energy storage according to claim 1, wherein the plurality of battery cells (400) are bonded to the bottom wall of the lower box body (200) through a first adhesive.

3. The pack box for energy storage according to claim 2, wherein the first glue is a thermally conductive glue.

4. The pack box for energy storage according to claim 1, wherein the battery cells (400) are bonded together through a second adhesive to form a battery cell module (500).

5. The pack box for energy storage according to claim 4, wherein a limiting part (600) is arranged between the inner side wall of the lower box body (200) and the cell module (500) along the length direction of the cell module (500) for fixing the cell module (500).

6. The pack box for energy storage according to claim 5, wherein a guide structure (700) is further arranged on the inner side wall of the lower box body (200) and used for guiding the installation of the cell module (500).

7. The pack box for energy storage according to claim 6, wherein the guiding structure (700) is a guiding plate, the guiding plate is arranged at an included angle with the side wall of the lower box body (200), and the guiding plate extends towards the bottom of the lower box body (200).

8. The pack box for energy storage according to any one of claims 4 to 7, wherein a limiting boss (110) is convexly arranged on the inner side wall of the upper box cover (100), and the cell module (500) is fixed between the limiting boss (110) and the front panel (300) along the width direction of the cell module (500).

9. The pack box for energy storage according to claim 8, further comprising a barrier strip (800), wherein two ends of the barrier strip (800) are respectively connected with the inner side wall of the lower box body (200), and the cell module (500) is fixed between the barrier strip (800) and the limiting boss (110) along the width direction of the cell module (500).

10. The pack box for energy storage according to claim 1, further comprising a battery management system, wherein the battery management system is arranged in the front panel (300), and a plurality of heat dissipation grooves (310) are arranged on the outer wall of the front panel (300).

11. The pack box for energy storage according to claim 1, wherein the upper box cover (100) and the lower box body (200) are connected through riveting.