Battery module and energy storage device

Abstract

The utility model belongs to the technical field of battery structures, and particularly relates to a battery module and an energy storage device. Comprising a battery tray, a glue spacing bar, a heat-conducting structural adhesive, a heat-conducting pouring sealant and a module, each module comprises a plurality of batteries, the batteries are electrically connected through a connecting bar, and the plurality of modules are arranged on the battery tray; the battery tray comprises a tray bottom plate, two parallel glue spacing bars are arranged in the middle of the tray bottom plate, and the length direction of the glue spacing bars is perpendicular to the length direction of the module; the two glue spacing bars divide the tray bottom plate into three parts, namely a tray bottom plate middle position, a tray bottom plate left side edge position and a tray bottom plate right side edge position; the heat conduction structural adhesive is arranged in the middle of the tray bottom plate, and the heat conduction pouring sealant is arranged on the left side edge of the tray bottom plate and the right side edge of the tray bottom plate. According to the utility model, the disassembly and maintenance efficiency is improved, the structural strength is improved, and the material cost is reduced while the structural strength is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of battery structure, concretely relates to a battery module and energy storage device. BACKGROUND

[0002] Lithium ion battery or sodium ion battery has the advantages of light weight, large energy storage, large power, no pollution, long service life, small self-discharge coefficient, wide temperature adaptation range, etc., and is gradually favored by people, and gradually replaces other traditional batteries in the field of energy storage and power battery.

[0003] For a large module, when the module is long, the battery close to the fixed end plate is more stable during vibration and is not easy to jump, and the battery far from the fixed end plate is more likely to jump, and the connecting row at this position is prone to fatigue fracture. The traditional module bottom overall heat conduction pouring sealant scheme is prone to fatigue fracture of the connecting row at the middle position during module vibration, and the module bottom overall heat conduction structure glue scheme is extremely difficult to disassemble for later maintenance, basically losing the possibility of later maintenance, and at the same time, the heat conduction structure glue has a high cost compared with the heat conduction pouring sealant, increasing the material cost of the scheme. Therefore, it is necessary to design a battery module and energy storage device with high structural strength and low material cost. SUMMARY

[0004] The utility model discloses a battery module and energy storage device to overcome the defects of the prior art, improve the dismounting and maintenance efficiency, improve the structural strength, reduce the material cost while ensuring the structural strength.

[0005] The utility model discloses a battery module and energy storage device to overcome the defects of the prior art, improve the dismounting and maintenance efficiency, improve the structural strength, reduce the material cost while ensuring the structural strength.

[0006] The module includes a plurality of batteries, and the batteries are electrically connected through connecting rows, and a plurality of modules are arranged on the battery tray.

[0007] The battery tray includes a tray bottom plate, two parallel glue spacing strips are arranged in the middle of the tray bottom plate, and the length direction of the glue spacing strip is perpendicular to the length direction of the module. The two glue spacing strips divide the tray bottom plate into three parts, i.e. the middle position of the tray bottom plate, the left side edge position of the tray bottom plate and the right side edge position of the tray bottom plate.

[0008] The heat conduction structure glue is arranged on the middle position of the tray bottom plate, the heat conduction pouring sealant is arranged on the left side edge position of the tray bottom plate and the right side edge position of the tray bottom plate, and the heat conduction structure glue and the heat conduction pouring sealant are regionally isolated through the glue spacing strip.

[0009] Further, the module is provided with fixed end plates at both ends, and the plurality of batteries stacked together are fixed together with the fixed end plates by a binding belt, and the plurality of batteries are stacked together in a certain parallel and series form.

[0010] Further, the battery tray is a box structure with one side open, which is composed of a tray bottom plate and a tray surrounding edge perpendicular to the tray bottom plate; the tray bottom plate is provided with a module fixing beam, and the tray surrounding edge is provided with a box cover fixing hole.

[0011] Further, the module is arranged on the tray bottom plate, and the end portion of the module is fixedly connected with the module fixing beam through the fixed end plate.

[0012] Further, the second battery away from the fixed end plate is adhered to the tray bottom plate by the heat-conducting structure, forming a middle fixed point of the module, improving the overall rigidity of the module, and the glue spacing strip blocks mutual pollution of the two glues and can be supported at the bottom of the module, so that a glue layer is formed at the bottom of the module.

[0013] Further, the glue spacing strip is made of foam or hard insulating material.

[0014] The battery module and the energy storage device have the following advantages: the plurality of batteries stacked together are fixed together by the fixed end plates and the binding belt to form the module, when the module is long in the traditional structure, the first battery close to the fixed end plate is more stable when vibrating and is not easy to jump, the second battery away from the fixed end plate is more easy to jump, and the connecting row at this position is prone to metal fatigue and fracture failure; the second battery away from the fixed end plate is adhered to the tray bottom plate by the heat-conducting structure to form a middle fixed point of the module, improve the overall rigidity of the module, and the glue spacing strip blocks mutual pollution of the two glues and can be supported at the bottom of the module, so that a glue layer is formed at the bottom of the module; the middle position of the module is adhered by the heat-conducting structure, and other positions are filled with the heat-conducting structure glue, compared with the overall heat-conducting structure glue scheme, the module is more easy to disassemble and maintain, compared with the overall heat-conducting structure glue scheme, the module has the middle fixed point and has higher structural strength; the heat-conducting structure glue has the advantage of low cost compared with the heat-conducting structure glue, and the structure can meet the structural strength while reducing the material cost. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0016] Figure 1 It is the explosion drawing of the battery module and the energy storage device scheme of the utility model.

[0017] Figure 2 It is the schematic diagram of the module of the utility model.

[0018] Figure 3 It is the schematic diagram of the battery tray of the utility model.

[0019] Figure 4 It is the schematic diagram of the glue spacing strip installation of the utility model.

[0020] Figure 5 It is the schematic diagram of the heat conduction structure glue and the heat conduction pouring sealant glue of the utility model.

[0021] Figure 6 It is the schematic diagram of the module assembly of the utility model. DETAILED DESCRIPTION

[0022] The utility model will be further described below in combination with the drawings.

[0023] It should be understood that the specific embodiments described herein are only used to explain the utility model and not to limit the utility model.

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the drawings of the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0025] The utility model relates to a kind of battery module and energy storage device, including battery tray 1, glue spacing strip 2, heat conduction structure glue 3, heat conduction pouring sealant 4 and module 5;

[0026] The module 5 includes multiple batteries 5-1, each battery 5-1 is electrically connected by connecting row 5-4, and multiple module 5 is arranged on the battery tray 1;

[0027] The battery tray 1 includes tray bottom plate 1-1, the middle part of the tray bottom plate 1-1 is provided with two parallel glue spacing strips 2, the length direction of the glue spacing strip 2 is perpendicular to the length direction of the module 5;Two glue spacing strips 2 divide the tray bottom plate 1-1 into three parts, i.e. tray bottom plate middle position 1-1-1, tray bottom plate left side edge position 1-1-2 and tray bottom plate right side edge position 1-1-3;

[0028] The heat-conducting structural glue 3 is arranged on the middle position 1-1-1 of the tray bottom plate, and the heat-conducting potting glue 4 is arranged on the left side edge position 1-1-2 of the tray bottom plate and the right side edge position 1-1-3 of the tray bottom plate; the heat-conducting structural glue 3 and the heat-conducting potting glue 4 are regionally isolated by the glue spacing strip 2 to avoid mutual contamination of the two glues; the heat-conducting structural glue 3 has the functions of heat conduction and structural bonding, and the heat-conducting potting glue 4 only has the function of heat conduction and cannot be used for bonding between components.

[0029] Further, in one embodiment, both ends of the module 5 are provided with fixed end plates 5-2, and a plurality of stacked batteries 5-1 and the fixed end plates 5-2 are fixed together by a binding belt 5-3; a plurality of batteries 5-1 are stacked together in a certain parallel and series form, and under the traditional structure, when the module 5 is long, the first battery 5-1-1 close to the fixed end plate is more stable when vibrating and is not easy to jump, and the second battery 5-1-2 far from the fixed end plate is more likely to jump, and the connecting row 5-4 at this position is prone to metal fatigue and fracture failure.

[0030] Further, in one embodiment, the battery tray 1 is a box structure with one open side, which is composed of the tray bottom plate 1-1 and the tray surrounding edge 1-2 perpendicular to the tray bottom plate 1-1; the tray bottom plate 1-1 is provided with a module fixing beam 1-3, and the tray surrounding edge 1-2 is provided with a box cover fixing hole 1-4.

[0031] Further, in one embodiment, the module 5 is arranged on the tray bottom plate 1-1, and the end of the module 5 is fixedly connected with the module fixing beam 1-3 through the fixed end plate 5-2.

[0032] Further, in one embodiment, the second battery 5-1-2 far from the fixed end plate 5-2 is fixed on the tray bottom plate 1-1 by the heat-conducting structural glue 3 to form a middle fixing point of the module, which improves the overall rigidity of the module 5; the glue spacing strip 2 blocks the mutual contamination of the two glues and can support the bottom of the module at the same time, so that a glue layer is formed at the bottom of the module; the first battery 5-1-1 close to the fixed end plate 5-2 conducts heat with the tray bottom plate 1-1 through the heat-conducting potting glue 4, and the second battery 5-1-2 far from the fixed end plate 5-2 conducts heat with the tray bottom plate 1-1 through the heat-conducting structural glue 3.

[0033] Further, in one embodiment, the glue spacing strip 2 is made of foam or hard insulating material.

[0034] The utility model discloses a battery module and energy storage device, module 5 is fixed together by the plurality of battery 5-1 of stacking together through the fixed end plate 5-2 and the bundling tape 5-3 composition, under the traditional structure, when module 5 is longer, the first battery 5-1-1 close to the fixed end plate is more stable when vibrating, and it is not easy to jump, and the second battery 5-1-2 far from the fixed end plate is more easy to jump, and the connecting row 5-4 in this position is easy to appear the fracture failure of metal fatigue, the second battery 5-1-2 far from the fixed end plate 5-2 of the utility model is fixed on the tray bottom plate 1-1 through the heat conduction structure glue 3, forms the module middle fixed point, promotes module 5 whole rigidity, and the glue interval strip 2 blocks two kinds of glue mutual pollution while can support at module bottom, makes module bottom form the glue layer, module only middle position adopts heat conduction structure glue and fixes, and other positions are heat conduction potting glue, relative whole heat conduction structure glue scheme, module is more easy to disassemble and maintain, relative whole heat conduction potting glue scheme, module increases the middle fixed point, has higher structural strength, and heat conduction potting glue has the advantage of low cost relative heat conduction structure glue, and this structure reduces material cost while satisfying structural strength.

[0035] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0036] The basic principles, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model can also have various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model.

Claims

1. A battery module and energy storage device, characterized by, It comprises a battery tray (1), a glue spacer strip (2), a heat-conducting structural glue (3), a heat-conducting pouring glue (4) and a module (5). The module (5) comprises a plurality of batteries (5-1), each of the batteries (5-1) is electrically connected through a connecting row (5-4), and a plurality of the modules (5) are arranged on the battery tray (1). The battery tray (1) comprises a tray bottom plate (1-1), the middle part of the tray bottom plate (1-1) is provided with two parallel glue spacer strips (2), the length direction of the glue spacer strip (2) is perpendicular to the length direction of the module (5); the two glue spacer strips (2) divide the tray bottom plate (1-1) into three parts, namely a tray bottom plate middle position (1-1-1), a tray bottom plate left side position (1-1-2) and a tray bottom plate right side position (1-1-3). The heat-conducting structural glue (3) is arranged on the tray bottom plate middle position (1-1-1), and the heat-conducting pouring glue (4) is arranged on the tray bottom plate left side position (1-1-2) and the tray bottom plate right side position (1-1-3).

2. The battery module and energy storage device of claim 1, wherein, Both ends of the module (5) are provided with a fixed end plate (5-2), and a plurality of the batteries (5-1) stacked together and the fixed end plate (5-2) are fixed together through a binding belt (5-3).

3. The battery module and energy storage device of claim 2, wherein, The battery tray (1) is a box structure with one open side, which is composed of the tray bottom plate (1-1) and a tray surrounding edge (1-2) perpendicular to the tray bottom plate (1-1); the tray bottom plate (1-1) is provided with a module fixing cross beam (1-3), and the tray surrounding edge (1-2) is provided with a box cover fixing hole (1-4).

4. The battery module and energy storage device of claim 3, wherein, The module (5) is arranged on the tray bottom plate (1-1), and the end part of the module (5) is fixedly connected with the module fixing cross beam (1-3) through the fixed end plate (5-2).

5. The battery module and energy storage device of claim 2, wherein, The second battery (5-1-2) away from the fixed end plate (5-2) is adhered to the tray bottom plate (1-1) through the heat-conducting structural glue (3).

6. The battery module and energy storage device of claim 1, wherein, The glue spacer strip (2) is made of foam or hard insulating material.

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