Module-free cylindrical battery integration device

Abstract

The utility model discloses a module-free type cylindrical battery integration device, which belongs to the technical field of module-free type cylindrical battery integration, and comprises a box body, a box cover is arranged above the box body, and the box cover is arranged on the box body. A heat management assembly, a heat conduction structural adhesive, a positioning support, a foaming structural adhesive enclosure piece, a foaming structural adhesive, a cylindrical battery, a battery top insulating plate, a CCS assembly and a CCS assembly insulating cover are arranged between the box body and the box cover and located in the box body; the box body comprises a lower box body and a structure reinforcing piece; the lower box body is of an uncovered structure and comprises a lower box body bottom plate and lower box body side walls. The heat management assembly is arranged through the box body laminated structure, the space utilization rate is improved, meanwhile, heat conduction between the heat management assembly and the battery is achieved through the bottom of the cylindrical battery, and compared with cylindrical surface heat conduction of a traditional coiled pipe heat management assembly, the heat management assembly has the advantages of being simple in structure, high in heat conduction efficiency and low in cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of cylindrical battery module-free battery integration, and in particular relates to a module-free cylindrical battery integration device. Background Art

[0002] Lithium-ion batteries have the advantages of light weight, large energy storage, high power, no pollution, long life, small self-discharge coefficient, and wide temperature adaptability. Therefore, they are gradually favored by people and are gradually replacing other traditional batteries in the field of energy storage and power batteries.

[0003] For sheet metal battery cases, they are generally formed by stamping steel plates, which has the advantage of low cost. The disadvantage is that the structural rigidity is low. The structural rigidity is generally increased by adding longitudinal and transverse beams, but the batteries are arranged in the space between the longitudinal and transverse beams. The battery vibration here is still relatively severe, the rigidity is insufficient, and long-term vibration can easily cause system damage. Since the sheet metal case does not have a certain bottom thickness like the aluminum case, the battery is very easy to be squeezed and damaged in the bottom ball impact test, which is dangerous. For cylindrical batteries, the traditional thermal management method is generally through the cylindrical surface heat conduction of the traditional serpentine tube thermal management component. This thermal management method has the disadvantages of complex structure, low thermal conductivity efficiency (for large cylindrical batteries) and high cost. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and to provide a module-free cylindrical battery integration device, which solves the problems in the above-mentioned background technology.

[0005] The purpose of the utility model is achieved as follows: a module-free cylindrical battery integration device, which includes a box body, a box cover is arranged above the box body, and a thermal management component, a heat-conducting structural adhesive, a positioning bracket, a foamed structural adhesive enclosure, a foamed structural adhesive, a cylindrical battery, a battery top insulating plate, a CCS component and a CCS component insulating cover are arranged between the box body and the box cover and inside the box body; the box body includes a lower box body and a structural reinforcement member; the lower box body is a coverless structure, and the lower box body includes a lower box body bottom plate and a lower box body side wall; the structural reinforcement member and the lower box body are a contoured structure, and the structural reinforcement member includes a structural member bottom plate and a structural member side wall; a planar groove is arranged on the structural member bottom plate, and a thermal management component accommodating groove, a structural member fixing groove and a positioning bracket fixing stud are distributed on the planar groove; the thermal management component is arranged in the thermal management component accommodating groove.

[0006] Furthermore, the structural reinforcement is fixed to the lower box body by welding, and the positioning bracket fixing studs are used for positioning and fixing the positioning bracket.

[0007] Furthermore, the structural reinforcement is nested in the lower box body, the side walls of the structural reinforcement are stacked together with the side walls of the lower box body and fixed by welding, and the structural member fixing groove is stacked together with the bottom plate of the lower box body and fixed by welding; the structural reinforcement is connected to the lower box body through the side walls and the bottom to form a three-dimensional structure, which is used to improve the structural rigidity and resist bottom ball impact.

[0008] Furthermore, the thermal management component is arranged in a thermal management component accommodating groove in the box body, and the thermal management component is a liquid cooling tube, a PTC heating tube or a resistance wire heating wire.

[0009] Furthermore, a heat-conductive structural adhesive is coated in the planar groove of the box body, and the heat-conductive structural adhesive is used for bonding, fixing and heat management of the cylindrical battery.

[0010] Furthermore, the cylindrical battery is positioned by a positioning bracket and fixed in a planar groove of the box body by a heat-conductive structural adhesive; the foam structural adhesive enclosure is fixed around the positioning bracket to prevent glue from overflowing when the foam structural adhesive is poured.

[0011] Furthermore, the foamed structural adhesive is used to separate adjacent cylindrical batteries to prevent heat transfer between adjacent cylindrical batteries and slow down the occurrence of heat diffusion; and a honeycomb connection structure is formed between the cylindrical batteries to increase the rigidity of the device.

[0012] Furthermore, the thermal management component is placed in the cavity between the thermal management component accommodating groove and the cylindrical battery, and a gap layer is provided between the bottom of the thermal management accommodating groove and the bottom plate of the lower box body to prevent the heat exchange between the cylindrical battery and the thermal management component from being affected by the outside world.

[0013] Furthermore, the structural member fixing groove is welded to the bottom plate of the lower box body, so as to form a multi-layer composite three-dimensional structure from a single-layer structure of the box body, so as to increase the rigidity of the box body.

[0014] Beneficial effects of the utility model:

[0015] The box stacking structure and the batteries are connected by foam structural adhesive, which effectively enhances the system strength and structural reliability. At the same time, the three-dimensional structure of the box stacking increases the buffer space for bottom ball hits, which can effectively improve the reliability of bottom ball hits.

[0016] The thermal management components are arranged in a box-type stacked structure to improve space utilization. At the same time, the thermal management components achieve heat conduction with the batteries through the bottom of the cylindrical batteries. Compared with the cylindrical heat conduction of traditional serpentine tube thermal management components, it has the advantages of simple structure, high thermal conductivity and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an exploded view of the utility model;

[0018] Figure 2 It is an exploded diagram of the box structure of the utility model;

[0019] Figure 3 It is a schematic diagram of the box of the utility model;

[0020] Figure 4 It is a schematic diagram of the installation of the thermal management component of the utility model;

[0021] Figure 5 It is a schematic diagram of the thermal conductive structural adhesive coating of the utility model;

[0022] Figure 6 It is a cross-sectional view of the utility model;

[0023] Figure 7 The utility model Figure 6 A is an enlarged view.

[0024] In the figure: 1, box body 2, thermal management component 3, thermal conductive structural adhesive 4, positioning bracket 5, foam structural adhesive enclosure 6, foam structural adhesive 7, cylindrical battery 8, battery top insulation plate 9, CCS component 10, CCS component insulation cover 11, box cover 1-1, lower box body 1-2, structural reinforcement 1-3, lower box body bottom plate 1-4, lower box body side wall 1-5, structural component bottom plate 1-6, structural component side wall 1-7, flat groove 1-8, thermal management component accommodating groove 1-9, structural component fixing groove 1-10, positioning bracket fixing stud 12-1, gap layer. DETAILED DESCRIPTION

[0025] The following is a further detailed description of the present invention in conjunction with the accompanying drawings. It should be noted that all directional words such as up, down, front, back, left, and right that appear in the present invention are based on Figure 1 The directional words are made for reference figures, and all directional words do not limit the utility model, but are only for more clear description and explanation of the utility model. Example

[0026] like Figure 1-7As shown, this embodiment discloses a module-free cylindrical battery integration device, which includes a box body 1, a box cover 11 is arranged on the top of the box body 1, and a thermal management component 2, a thermal conductive structural adhesive 3, a positioning bracket 4, a foamed structural adhesive enclosure 5, a foamed structural adhesive 6, a cylindrical battery 7, a battery top insulation plate 8, a CCS component 9 and a CCS component insulation cover 10 are arranged between the box body 1 and the box cover 11 and inside the box body 1; the box body 1 includes a lower box body 1-1 and a structural reinforcement 1-2; the lower box body 1-1 is coverless The structure of the lower box 1-1 includes a lower box bottom plate 1-3 and a lower box side wall 1-4; the structural reinforcement 1-2 and the lower box 1-1 are a conformal structure, and the structural reinforcement 1-2 includes a structural bottom plate 1-5 and a structural side wall 1-6; the structural bottom plate 1-5 is provided with a planar groove 1-7, and the planar groove 1-7 is distributed with a thermal management component accommodating groove 1-8, a structural component fixing groove 1-9 and a positioning bracket fixing stud 1-10; the thermal management component accommodating groove 1-8 is used to place the thermal management component 2. The structural component fixing groove 1-9 is used for welding and fixing between the structural reinforcement 1-2 and the lower box 1-1, and the positioning bracket fixing stud 1-10 is used for positioning and fixing the positioning bracket 4.

[0027] This embodiment effectively enhances the system strength and structural reliability through the stacked structure of the box 1 and the connection between the batteries through the foamed structural adhesive. At the same time, the three-dimensional structure of the stacked box 1 increases the buffer space for the bottom ball hit, which can effectively improve the reliability of the bottom ball hit. The stacked structure of the box 1 is used to arrange the thermal management component 2, which improves the space utilization rate. At the same time, the thermal management component 2 realizes heat conduction with the battery through the bottom of the cylindrical battery 7. Compared with the cylindrical surface heat conduction of the traditional serpentine tube thermal management component 2, it has the advantages of simple structure, high thermal conductivity efficiency and low cost. Example

[0028] like Figure 1-7As shown, this embodiment discloses a module-free cylindrical battery integration device, which includes a box body 1, a thermal management component 2, a thermal conductive structural adhesive 3, a positioning bracket 4, a foamed structural adhesive enclosure 5, a foamed structural adhesive 6, a cylindrical battery 7, a battery top insulation plate 8, a CCS component 9, a CCS component insulation cover 10 and a box cover 11; the box body 1 is composed of a lower box body 1-1 and a structural reinforcement 1-2. The lower box body 1-1 is a coverless box structure, which is composed of a lower box body bottom plate 1-3 and a lower box body side wall 1-4. The structural reinforcement 1-2 and the lower box body 1-1 are a contoured structure, which is composed of a structural component bottom plate 1-5 and a structural component side wall 1-6. There is a planar groove 1-7 on the structural member bottom plate 1-5, and a thermal management component accommodating groove 1-8, a structural member fixing groove 1-9 and a positioning bracket fixing stud 1-10 are distributed on the planar groove 1-7, wherein the thermal management component accommodating groove 1-8 is used to accommodate the thermal management component 2, the structural member fixing groove 1-9 is used for welding and fixing the structural reinforcement 1-2 and the lower box body 1-1, and the positioning bracket fixing stud 1-10 is used for positioning and fixing the positioning bracket 4.

[0029] For better effect, the structural reinforcement 1-2 is nested in the lower box body 1-1, the side wall 1-6 of the structural reinforcement is stacked together with the side wall 1-4 of the lower box body and fixed by welding, the structural member fixing groove 1-9 is stacked together with the bottom plate 1-3 of the lower box body and fixed by welding. The above welding method can be but is not limited to resistance welding or laser penetration welding. The structural reinforcement 1-2 is connected to the lower box body 1-1 through the side wall and the bottom to form a three-dimensional structure with a certain thickness. It has higher structural stiffness than a single-layer box body. At the same time, when facing bottom ball impact, the three-dimensional structure has better resistance to bottom ball impact.

[0030] For better effect, the thermal management component 2 is placed in the thermal management component accommodating groove 1-8 in the box body. The thermal management component 2 can be but is not limited to a liquid cooling tube, a PTC heating tube or a resistance wire heating wire; a thermal conductive structural adhesive 3 is applied in the planar groove 1-7 of the box body 1 for bonding and fixing of the cylindrical battery 7 and thermal management and heat conduction. Example

[0031] like Figure 1-7As shown, this embodiment discloses a module-free cylindrical battery integration device, which includes a box body 1, a thermal management component 2, a thermal conductive structural adhesive 3, a positioning bracket 4, a foamed structural adhesive enclosure 5, a foamed structural adhesive 6, a cylindrical battery 7, a battery top insulation plate 8, a CCS component 9, a CCS component insulation cover 10 and a box cover 11; the box body 1 is composed of a lower box body 1-1 and a structural reinforcement 1-2. The lower box body 1-1 is a coverless box structure, which is composed of a lower box body bottom plate 1-3 and a lower box body side wall 1-4. The structural reinforcement 1-2 and the lower box body 1-1 are a contoured structure, which is composed of a structural component bottom plate 1-5 and a structural component side wall 1-6. There is a planar groove 1-7 on the structural member bottom plate 1-5, and a thermal management component accommodating groove 1-8, a structural member fixing groove 1-9 and a positioning bracket fixing stud 1-10 are distributed on the planar groove 1-7, wherein the thermal management component accommodating groove 1-8 is used to accommodate the thermal management component 2, the structural member fixing groove 1-9 is used for welding and fixing the structural reinforcement 1-2 and the lower box body 1-1, and the positioning bracket fixing stud 1-10 is used for positioning and fixing the positioning bracket 4.

[0032] For better effect, the structural reinforcement 1-2 is nested in the lower box body 1-1, the side wall 1-6 of the structural reinforcement is stacked together with the side wall 1-4 of the lower box body and fixed by welding, the structural member fixing groove 1-9 is stacked together with the bottom plate 1-3 of the lower box body and fixed by welding. The above welding method can be but is not limited to resistance welding or laser penetration welding. The structural reinforcement 1-2 is connected to the lower box body 1-1 through the side wall and the bottom to form a three-dimensional structure with a certain thickness. It has higher structural stiffness than a single-layer box body. At the same time, when facing bottom ball impact, the three-dimensional structure has better resistance to bottom ball impact.

[0033] For better effect, the thermal management component 2 is placed in the thermal management component accommodating groove 1-8 in the box body. The thermal management component 2 can be but is not limited to a liquid cooling tube, a PTC heating tube or a resistance wire heating wire; a thermal conductive structural adhesive 3 is applied in the planar groove 1-7 of the box body 1 for bonding and fixing of the cylindrical battery 7 and thermal management and heat conduction. Figure 6 As a cross-sectional view of the structure, the cross-sectional view is partially enlarged A to show that the cylindrical battery 7 is positioned by the positioning bracket 4 and fixed in the plane groove 1-7 of the box body by the thermal conductive structural adhesive 3. The foam structural adhesive enclosure 5 is fixed around the positioning bracket 4 to prevent the foam structural adhesive 6 from overflowing when the adhesive is poured.

[0034] For better effect, the foamed structural adhesive 6 isolates the cylindrical batteries 7, which can prevent heat transfer between the cylindrical batteries 7 and slow down the occurrence of heat diffusion. At the same time, a honeycomb connection structure is formed between the cylindrical batteries 7 to increase the rigidity of the system.

[0035] For better effect, the thermal management component 2 is placed in the cavity between the thermal management component accommodating groove 1-8 and the cylindrical battery 7, and there is a gap layer 12-1 between the bottom of the thermal management accommodating groove 1-8 and the lower box bottom plate 1-3 to prevent the heat exchange between the cylindrical battery 7 and the thermal management component 2 from being affected by the outside world; the structural member fixing groove 1-9 is welded to the lower box bottom plate 1-3, so that the box is transformed from a traditional single-layer structure to a multi-layer composite three-dimensional structure, which can increase the box stiffness and improve the structural reliability.

[0036] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A module-free cylindrical battery integrated device, comprising a box (1), characterized in that: A box cover (11) is arranged above the box body (1); a thermal management component (2), a thermal conductive structural adhesive (3), a positioning bracket (4), a foamed structural adhesive enclosure (5), a foamed structural adhesive (6), a cylindrical battery (7), a battery top insulating plate (8), a CCS component (9) and a CCS component insulating cover (10) are arranged between the box body (1) and the box cover (11) and inside the box body (1); the box body (1) comprises a lower box body (1-1) and a structural reinforcement component (1-2); the lower box body (1-1) is a coverless structure, the lower box body (1-1) comprises a lower box body bottom plate and a lower box body side wall; the structural reinforcement member (1-2) and the lower box body (1-1) are a conformal structure, the structural reinforcement member (1-2) comprises a structural member bottom plate and a structural member side wall; a planar groove (1-7) is arranged on the structural member bottom plate, and a thermal management component accommodating groove, a structural member fixing groove and a positioning bracket fixing stud are distributed on the planar groove (1-7); the thermal management component (2) is arranged in the thermal management component accommodating groove.

2. The module-free cylindrical battery integration device according to claim 1, characterized in that: The structural reinforcement member (1-2) is welded and fixed to the lower box body (1-1), and the positioning bracket (4) fixing studs are used for positioning and fixing the positioning bracket (4).

3. The module-free cylindrical battery integration device according to claim 2, characterized in that: The structural reinforcement member (1-2) is nested in the lower box body (1-1); the side wall of the structural reinforcement member is stacked together with the side wall of the lower box body and is fixed by welding; the structural member fixing groove is stacked together with the bottom plate of the lower box body and is fixed by welding; the structural reinforcement member (1-2) and the lower box body (1-1) are connected via the side wall and the bottom to form a three-dimensional structure, which is used to improve the structural rigidity and have the function of resisting bottom ball impact.

4. The module-free cylindrical battery integration device according to claim 2, characterized in that: The thermal management component (2) is arranged in a thermal management component receiving groove in the box body (1); the thermal management component (2) is a liquid cooling tube, a PTC heating tube or a resistance wire heating wire.

5. The module-free cylindrical battery integration device according to claim 2, characterized in that: A heat-conducting structural adhesive (3) is coated in the planar groove (1-7) of the box body (1), and the heat-conducting structural adhesive (3) is used for bonding and fixing the cylindrical battery (7) and for heat management and heat conduction.

6. The module-free cylindrical battery integration device according to claim 2, characterized in that: The cylindrical battery (7) is positioned by a positioning bracket (4) and fixed in the plane groove (1-7) of the box body (1) by a heat-conducting structural adhesive (3); the foaming structural adhesive enclosure (5) is fixed around the positioning bracket (4) to prevent the foaming structural adhesive (6) from overflowing when the adhesive is poured.

7. The module-free cylindrical battery integration device according to claim 6, characterized in that: The foamed structural adhesive (6) is used to separate adjacent cylindrical batteries (7) to prevent heat transfer between adjacent cylindrical batteries (7) and slow down the occurrence of heat diffusion; and a honeycomb connection structure is formed between the cylindrical batteries (7) to increase the rigidity of the device.

8. The module-free cylindrical battery integration device according to claim 2, characterized in that: The thermal management component (2) is placed in a cavity between the thermal management component accommodating groove and the cylindrical battery (7), and a gap layer (12-1) is provided between the bottom of the thermal management accommodating groove and the bottom plate of the lower box body, for preventing heat exchange between the cylindrical battery (7) and the thermal management component (2) from being affected by the outside world.

9. The module-free cylindrical battery integration device according to claim 2, characterized in that: The structural member fixing groove is welded to the bottom plate of the lower box body, and is used to transform the box body (1) from a single-layer structure into a three-dimensional structure, thereby increasing the rigidity of the box body (1).

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