Cylindrical battery integration device

Abstract

The utility model belongs to the technical field of cylindrical battery structures, and particularly relates to a cylindrical battery integration device. The device is composed of a shell, a cylindrical battery and a shell cover, wherein the shell is composed of a shell bottom surface and a shell vertical surface; a shell bottom accommodating groove is formed in the bottom surface of the shell; the shell cover is composed of a shell cover bottom face and a shell cover vertical face. A shell cover bottom accommodating groove is formed in the bottom surface of the shell cover; a plurality of connecting rows are arranged in the shell cover, and wavy bosses are arranged at the end parts of the connecting rows; a fixing column is arranged on the bottom surface of the shell cover, and the connecting bar is connected with the fixing column; the wavy boss comprises a first wavy boss arranged on the left side of the connecting row and a second wavy boss arranged on the right side of the connecting row, and a first shell cover boss and a second shell cover boss are further arranged on the bottom surface of the shell cover; the utility model has the advantages of simple structure, high assembly efficiency, low equipment investment cost and the like; and when thermal runaway occurs, high-temperature flue gas can be discharged out of the battery in time, so that explosion and thermal diffusion of the battery are avoided, and the system safety is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of cylindrical battery structures, and particularly relates to a cylindrical battery integration device. Background Art

[0002] Lithium-ion or sodium-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 have gradually replaced other traditional batteries in the fields of energy storage and power batteries.

[0003] Cylindrical batteries offer high production efficiency, low production costs, and excellent product consistency. Battery systems are typically constructed from multiple batteries connected in parallel and series. Welding is often used for electrical connection during these processes. For small power battery integration solutions, laser welding requires significant equipment and fixture costs, resulting in high costs and low assembly efficiency. For cylindrical batteries, due to the small spacing between integrated batteries, when a module experiences thermal runaway, the high-temperature fumes emitted from the explosion-proof valve can easily cause thermal damage to surrounding batteries, potentially spreading the runaway condition and posing a risk of fire and explosion to the system. Utility Model Content

[0004] The purpose of the present utility model is to overcome the shortcomings of the existing technology and provide a cylindrical battery integration device, which has the advantages of simple structure, high assembly efficiency and low equipment investment cost compared with the traditional welding connection scheme. When thermal runaway occurs, high-temperature smoke can be discharged from the battery in time to avoid battery explosion and heat diffusion, thereby ensuring system safety.

[0005] The purpose of the utility model is achieved as follows: a cylindrical battery integrated device, comprising a housing, a cylindrical battery and a housing cover, wherein the housing comprises a housing bottom surface and a housing vertical surface perpendicular to the housing bottom surface; a housing bottom receiving groove is provided on the housing bottom surface, and the housing bottom receiving groove is formed by a first annular boss and a first annular wall surface perpendicular to the first annular boss;

[0006] The shell cover is composed of a shell cover bottom surface and a shell cover vertical surface perpendicular to the shell cover bottom surface; a shell cover bottom receiving groove is provided on the shell cover bottom surface, and the shell cover bottom receiving groove is surrounded by a second annular boss and a second annular wall surface perpendicular to the second annular boss; a plurality of connecting rows are provided in the shell cover, and the connecting rows are strip-shaped structures. The material is not limited to brass or phosphor copper, etc., which have good electrical conductivity and good elasticity. Wave-shaped bosses are provided at the ends of the connecting rows; a fixing column is provided on the shell cover bottom surface, and the connecting row is connected to the fixing column;

[0007] The wavy boss includes a first wavy boss arranged on the left side of the connecting row and a second wavy boss arranged on the right side of the connecting row. The bottom surface of the shell cover is also provided with a first shell cover boss and a second shell cover boss. The first shell cover boss is supported below the first wavy boss, so that the first wavy boss is pressed downward on the end of one of the cylindrical batteries; the second shell cover boss is supported below the second wavy boss, so that the second wavy boss is pressed downward on the end of another adjacent cylindrical battery.

[0008] Furthermore, the shell and the shell cover are both box-shaped structures and are made of insulating materials.

[0009] Furthermore, the cylindrical battery is composed of a cover assembly and a battery shell, and the cover assembly is composed of a pole, a first explosion-proof valve and a light cover, wherein the pole is the first polarity of the cylindrical battery, the light cover is the second polarity of the cylindrical battery, and a second explosion-proof valve is provided on the bottom of the battery shell.

[0010] Furthermore, one end of the bottom of the shell of the cylindrical battery extends into the receiving groove at the bottom of the shell, and one end of the cover assembly of the cylindrical battery extends into the receiving groove at the bottom of the shell.

[0011] Furthermore, a plurality of nuts are provided on the edge of the vertical surface of the shell, and a plurality of fixing holes are provided on the edge of the vertical surface of the shell cover, and the fixing holes correspond to the nuts provided on the edge of the vertical surface of the shell.

[0012] Furthermore, the shell and the shell cover are connected by bolts, and the bolts pass through the fixing holes and are connected to the corresponding nuts.

[0013] Furthermore, a plurality of first notches are provided on the receiving groove at the bottom of the shell, for evacuating the high-temperature flue gas discharged from the second explosion-proof valve at the bottom of the cylindrical battery when thermal runaway occurs in the cylindrical battery.

[0014] Furthermore, a plurality of second notches are provided on the receiving groove at the bottom of the shell cover, for evacuating the high-temperature flue gas discharged from the first explosion-proof valve at the top of the cylindrical battery when thermal runaway occurs in the cylindrical battery.

[0015] Furthermore, the connecting row is fixed to the fixing column by riveting, hot melting or screwing.

[0016] Beneficial effects of the present invention: The present invention provides a cylindrical battery integration device, in which the cylindrical batteries are connected by interference compression through elastic wavy bosses in a connecting row. Compared with traditional welding connection schemes, the device has the advantages of simple structure, high assembly efficiency, and low equipment investment cost; the cylindrical batteries are fixed by the bottom accommodating grooves of the shell and the bottom accommodating grooves of the shell cover, which has the advantages of simple structure and low material cost compared with the traditional scheme in which the cylindrical batteries are fixed by brackets and then placed in a protective shell; exhaust channels are provided on the top and bottom of the cylindrical battery. When thermal runaway occurs, high-temperature smoke can be discharged from the battery in time to avoid battery explosion and heat diffusion, thereby ensuring system safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shown is an axial view of the cylindrical battery integration solution of the present invention.

[0018] Figure 2 Shown is an exploded view of the cylindrical battery integration solution of the present invention.

[0019] Figure 3 Shown is a schematic diagram of the housing of the present utility model.

[0020] Figure 4 Shown is a schematic diagram of the shell cover of the present invention.

[0021] Figure 5 Shown is a schematic diagram of the cylindrical battery cover assembly of the present invention.

[0022] Figure 6 Shown is a schematic diagram of the second explosion-proof valve of the cylindrical battery housing of the present invention.

[0023] Figure 7 Shown is a top view of the cylindrical battery integration solution of the present invention.

[0024] Figure 8 Shown is a cross-sectional view of the vertical top surface of the cylindrical battery integration solution of the present invention.

[0025] Figure 9 Shown is a partial enlarged view of the connecting row position B of the present invention.

[0026] Figure 10 Shown is a partial enlarged view of the accommodating groove position C at the bottom of the shell of the present invention. DETAILED DESCRIPTION

[0027] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] It should be noted that all directional indications in the embodiments of the present invention (such as up-down-left-right-front-back...) are only used to explain the relative position relationship - movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. The connection can be a direct connection or an indirect connection.

[0030] like Figure 1-10 As shown, a cylindrical battery integrated device comprises a housing 1, cylindrical batteries 2, and a housing cover 3. The housing 1 comprises a housing bottom surface 1-2 and a housing elevation 1-1 perpendicular to the housing bottom surface 1-2. A housing bottom receiving groove 1-4 is provided on the housing bottom surface 1-2 for positioning and securing one end of the bottom of the cylindrical battery 2. The housing bottom receiving groove 1-4 is surrounded by a first annular boss 1-5 and a first annular wall 1-6 perpendicular to the first annular boss 1-5.

[0031] The shell cover 3 is composed of a shell cover bottom surface 3-2 and a shell cover vertical surface 3-1 perpendicular to the shell cover bottom surface 3-2; a shell cover bottom accommodating groove 3-4 is provided on the shell cover bottom surface 3-2, which is used to position and fix one end of the top of the cylindrical battery 2, and the shell cover bottom accommodating groove 3-4 is surrounded by a second annular boss 3-5 and a second annular wall 3-6 perpendicular to the second annular boss 3-5; a plurality of connecting bars 3-8 are provided in the shell cover 3, and the connecting bars 3-8 are strip-shaped structures. The material is not limited to brass or phosphor copper and other materials with good conductivity and good elasticity. A wavy boss 3-9 is provided at the end of the connecting bar 3-8; a fixing column 3-10 is provided on the shell cover bottom surface 3-2, and the connecting bar 3-8 is connected to the fixing column 3-10;

[0032] The wavy boss 3-9 includes a first wavy boss 3-9-1 arranged on the left side of the connecting row 3-8 and a second wavy boss 3-9-2 arranged on the right side of the connecting row 3-8. The shell cover bottom surface 3-2 is also provided with a first shell cover boss 3-11-1 and a second shell cover boss 3-11-2. The first shell cover boss 3-11-1 is supported below the first wavy boss 3-9-1, so that the first wavy boss 3-9-1 is pressed downward on the end of one of the cylindrical batteries 2; the second shell cover boss 3-11-2 is supported below the second wavy boss 3-9-2, so that the second wavy boss 3-9-2 is pressed downward on the end of another adjacent cylindrical battery 2. The two ends of the connecting row 3-8 are interference-pressed on the ends of the two adjacent cylindrical batteries 2, so that the cylindrical batteries 2 can be connected in series or in parallel. Compared with the traditional welding connection scheme, it has the advantages of simple structure, high assembly efficiency, and low equipment investment cost.

[0033] Furthermore, in one embodiment, the housing 1 and the housing cover 3 are both box-shaped structures and are made of insulating materials.

[0034] Furthermore, in one embodiment, the cylindrical battery 2 is composed of a cover assembly 2-1 and a battery shell 2-2, and the cover assembly 2-1 is composed of a pole 2-3, a first explosion-proof valve 2-4 and a light cover 2-5, wherein the pole 2-3 is the first polarity of the cylindrical battery 2, the light cover 2-5 is the second polarity of the cylindrical battery 2, and a second explosion-proof valve 2-7 is provided on the shell bottom 2-6 of the battery shell 2-2.

[0035] Furthermore, in one embodiment, one end of the shell bottom 2-6 of the cylindrical battery 2 extends into the shell bottom accommodating groove 1-4, thereby limiting and fixing it by the shell bottom accommodating groove 1-4, and one end of the cover assembly 2-1 of the cylindrical battery 2 extends into the shell bottom accommodating groove 3-4, thereby limiting and fixing it by the shell bottom accommodating groove 3-4; through the cooperation of the shell bottom accommodating groove 1-4 and the corresponding shell bottom accommodating groove 3-4, the cylindrical battery 2 can be installed and fixed.

[0036] Furthermore, in one embodiment, a plurality of nuts 1-3 are provided on the edge of the shell facade 1-1, and a plurality of fixing holes 3-3 are provided on the edge of the shell cover facade 3-1, and the fixing holes 3-3 correspond to the nuts 1-3 provided on the edge of the shell facade 1-1.

[0037] Furthermore, in one embodiment, the shell 1 and the shell cover 3 are connected by a bolt 4, and the bolt 4 passes through the fixing hole 3-3 and is connected to the corresponding nut 1-3; the bolt 4 passes through the fixing hole 3-3 set at the edge of the shell cover facade 3-1 and is connected to the nut 1-3 set at the edge of the shell facade 1-1, thereby fixing the shell 1 and the shell cover 3 together.

[0038] Furthermore, in one embodiment, a plurality of first notches 1-7 are provided on the receiving groove 1-4 at the bottom of the shell, which are used to evacuate the high-temperature flue gas discharged from the second explosion-proof valve 2-7 at the bottom of the cylindrical battery 2 when thermal runaway occurs in the cylindrical battery 2, thereby preventing the high-temperature flue gas from causing thermal impact on the adjacent batteries, thereby ensuring the safety of the system.

[0039] Furthermore, in one embodiment, a plurality of second notches 3-7 are provided on the receiving groove 3-4 at the bottom of the shell cover, which are used to evacuate the high-temperature flue gas discharged from the first explosion-proof valve 2-4 at the top of the cylindrical battery 2 when thermal runaway occurs in the cylindrical battery 2, thereby avoiding the high-temperature flue gas from causing thermal impact on the adjacent batteries, thereby ensuring the safety of the system.

[0040] Furthermore, in one embodiment, the connecting row 3-8 is fixed to the fixing column 3-10 by riveting, hot melting or screwing.

[0041] In summary, the present invention provides a cylindrical battery integration device in which the cylindrical batteries are connected by interference compression through elastic wavy bosses on the connecting row. Compared with traditional welding connection solutions, this device has the advantages of simple structure, high assembly efficiency, and low equipment investment cost. The cylindrical batteries are fixed by the bottom accommodating grooves of the shell and the bottom accommodating grooves of the shell cover. Compared with the traditional solution in which the cylindrical batteries are fixed by brackets and then placed in a protective shell, this device has the advantages of simple structure and low material cost. Smoke exhaust channels are provided on the top and bottom of the cylindrical battery. When thermal runaway occurs, high-temperature smoke can be discharged from the battery in time to avoid battery explosion and heat diffusion, thereby ensuring system safety.

[0042] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0043] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. A cylindrical battery integrated device, comprising a housing (1), a cylindrical battery (2) and a housing cover (3), characterized in that: The shell (1) is composed of a shell bottom surface (1-2) and a shell vertical surface (1-1) perpendicular to the shell bottom surface (1-2); a shell bottom receiving groove (1-4) is provided on the shell bottom surface (1-2), and the shell bottom receiving groove (1-4) is surrounded by a first annular boss (1-5) and a first annular wall surface (1-6) perpendicular to the first annular boss (1-5); The shell cover (3) is composed of a shell cover bottom surface (3-2) and a shell cover vertical surface (3-1) perpendicular to the shell cover bottom surface (3-2); a shell cover bottom accommodating groove (3-4) is provided on the shell cover bottom surface (3-2), and the shell cover bottom accommodating groove (3-4) is surrounded by a second annular boss (3-5) and a second annular wall surface (3-6) perpendicular to the second annular boss (3-5); a plurality of connecting rows (3-8) are provided in the shell cover (3), and a wave-shaped boss (3-9) is provided at the end of the connecting row (3-8); a fixing column (3-10) is provided on the shell cover bottom surface (3-2), and the connecting row (3-8) is connected to the fixing column (3-10); The wavy boss (3-9) comprises a first wavy boss (3-9-1) arranged on the left side of the connecting row (3-8) and a second wavy boss (3-9-2) arranged on the right side of the connecting row (3-8). A first shell cover boss (3-11-1) and a second shell cover boss (3-11-2) are also arranged on the bottom surface (3-2) of the shell cover. The first shell cover boss (3-11-1) is supported below the first wavy boss (3-9-1); and the second shell cover boss (3-11-2) is supported below the second wavy boss (3-9-2).

2. The cylindrical battery integrated device according to claim 1, characterized in that: The shell (1) and the shell cover (3) are both box-shaped structures and are made of insulating materials.

3. The cylindrical battery integrated device according to claim 1, characterized in that: The cylindrical battery (2) is composed of a cover assembly (2-1) and a battery housing (2-2); the cover assembly (2-1) is composed of a pole (2-3), a first explosion-proof valve (2-4) and a light cover (2-5); and a second explosion-proof valve (2-7) is provided on the housing bottom (2-6) of the battery housing (2-2).

4. The cylindrical battery integrated device according to claim 3, characterized in that: One end of the shell bottom (2-6) of the cylindrical battery (2) extends into the shell bottom receiving groove (1-4), and one end of the cover plate assembly (2-1) of the cylindrical battery (2) extends into the shell bottom receiving groove (3-4).

5. The cylindrical battery integrated device according to claim 1, characterized in that: The edge of the housing facade (1-1) is provided with a plurality of nuts (1-3), and the edge of the housing cover facade (3-1) is provided with a plurality of fixing holes (3-3).

6. The cylindrical battery integrated device according to claim 5, characterized in that: The housing (1) and the housing cover (3) are connected via bolts (4), and the bolts (4) pass through the fixing holes (3-3) and are connected to the corresponding nuts (1-3).

7. The cylindrical battery integrated device according to claim 3, characterized in that: A plurality of first notches (1-7) are provided on the housing bottom accommodating groove (1-4).

8. The cylindrical battery integrated device according to claim 3, characterized in that: A plurality of second notches (3-7) are provided on the housing cover bottom accommodating groove (3-4).

9. The cylindrical battery integrated device according to claim 1, characterized in that: The connecting row (3-8) is fixed to the fixing column (3-10) by riveting, hot melting or screwing.

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