Square lithium battery negative pressure collecting device

Abstract

A square lithium battery negative pressure collecting device comprises a metal frame, a battery is installed on a bottom frame of the metal frame, a negative pressure collecting device is installed on a top frame of the metal frame, the negative pressure collecting device comprises a converging frame, a negative pressure collecting cup is arranged at the bottom of the converging frame in the longitudinal direction, and an air guide hole is formed in the connecting position of the negative pressure collecting cup and a converging pipe in the converging frame. A plug capable of sliding up and down is arranged in the air guide hole, and when the plug slides upwards, the air guide hole is ventilated, so that the negative pressure collecting cup is kept closed at a station without batteries and is conducted at a station with batteries, false batteries do not need to be supplemented by workers, the manual operation time is shortened, the air tightness is kept stable, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to a negative pressure collecting device for a square lithium battery and belongs to the field of battery manufacturing. Background Art

[0002] In the production process of square lithium batteries, a negative pressure collection cup is required to connect the battery's liquid filling port and absorb the exhaust gas inside the battery. Conventional negative pressure collection cups are connected to the negative pressure manifold, and all workstations are connected to the same manifold. If the tray battery is not fully placed, the workstation without batteries needs manual intervention to replace the corresponding workstation nozzle with a plug or fill the empty workstation with fake batteries to prevent the opening of the negative pressure collection cup from being exposed. Finding the corresponding workstation and replacing the plug are cumbersome and inconvenient, and it is not easy to ensure its airtightness. Summary of the invention

[0003] In view of the above problems, the present invention proposes a square lithium battery negative pressure collection device, the design concept of which is to provide an air guide hole plugged with a clamp at the connection between the negative pressure collection cup and the guide tube, so that the bottom of the negative pressure collection cup is in a closed state when it does not contact the battery.

[0004] A square lithium battery negative pressure collection device comprises a metal frame 3, the bottom frame of the metal frame 3 is loaded with an external battery 2, and a negative pressure collection mechanism 1 is arranged on the top frame of the metal frame 3; the negative pressure collection mechanism 1 comprises a busbar 4, and the busbar 4 is longitudinally connected to the top frame of the metal frame 3; the bottom of the busbar 4 is connected to a longitudinally arranged negative pressure collection cup 5; the busbar 4 is built with a busbar 6, and a vertical air guide hole 8 is arranged at the connection between the negative pressure collection cup 5 and the busbar 6; the upper part of the air guide hole 8 is connected to the inner cavity of the busbar 6, and the lower part of the air guide hole 8 is connected to the inner cavity of the negative pressure collection cup 5; the bottom of the negative pressure collection cup 5 is provided with an opening;

[0005] A plug 7 which can slide up and down is provided in the air guide hole 8; the plug 7 is connected to the negative pressure collecting cup 5 and can slide up and down inside the air guide hole 8, and a cavity which passes through the plug 7 from top to bottom is provided inside the plug 7; the bottom of the plug 7 is connected to the negative pressure collecting cup 5; a horizontal T-shaped structure 71 is provided on the top of the plug 7, and the horizontal length of the T-shaped structure 71 is greater than the inner diameter of the plug 7; when the T-shaped structure 71 contacts the inner wall of the air guide hole 8, the air flow between the manifold 6 and the air guide hole 8 is isolated.

[0006] More specifically, a first sealing ring 9 and a second sealing ring 10 are provided at the connection between the air guide hole 8 and the inner cavity of the manifold 6, wherein the first sealing ring 9 is connected to the manifold 6 and the second sealing ring 10 is connected to the air guide hole 8. The first sealing ring 9 and the second sealing ring 10 strengthen the air tightness of the air guide hole 8.

[0007] When the bottom of the negative pressure collection cup 5 does not contact the battery 2, the plug 7 blocks the inner wall of the air guide hole 8 through the T-shaped structure 71. At this time, the negative pressure collection cup 5 is connected to the external environment and isolated from the manifold 6; when the bottom of the negative pressure collection cup 5 contacts the liquid filling port of the battery 2, the plug 7 is pushed upward, the T-shaped structure 71 does not contact the air guide hole 8, and the negative pressure collection cup absorbs the exhaust gas in the battery 2 normally.

[0008] The beneficial effects of the present invention are: the workstation without battery is kept closed, the workstation with battery is turned on, the staff does not need to replenish dummy batteries, the manual operation time is reduced, the air tightness is kept stable, and the work efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural diagram of a square lithium battery negative pressure collection device of the present invention.

[0010] Figure 2 It is a structural diagram of the negative pressure collection cup of the present invention.

[0011] Figure 3 It is a longitudinal section view of the negative pressure collection cup of the present invention.

[0012] Figure 4 It is a diagram of the internal structure of the negative pressure collection cup of the present invention.

[0013] Figure 5 It is a structural diagram of the plug of the negative pressure collection cup of the present invention. DETAILED DESCRIPTION

[0014] The specific implementation of the embodiment of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the embodiment of the present invention, and is not used to limit the embodiment of the present invention.

[0015] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0016] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0017] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0019] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. 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 present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0020] The present invention will be described in detail below in conjunction with exemplary embodiments with reference to the accompanying drawings.

[0021] A square lithium battery negative pressure collection device comprises a metal frame 3, the bottom frame of the metal frame 3 is loaded with an external battery 2, and a negative pressure collection mechanism 1 is arranged on the top frame of the metal frame 3; the negative pressure collection mechanism 1 comprises a busbar 4, and the busbar 4 is longitudinally connected to the top frame of the metal frame 3; the bottom of the busbar 4 is connected to a longitudinally arranged negative pressure collection cup 5; the busbar 4 is built with a busbar 6, and a vertical air guide hole 8 is arranged at the connection between the negative pressure collection cup 5 and the busbar 6; the upper part of the air guide hole 8 is connected to the inner cavity of the busbar 6, and the lower part of the air guide hole 8 is connected to the inner cavity of the negative pressure collection cup 5; the bottom of the negative pressure collection cup 5 is provided with an opening;

[0022] A plug 7 which can slide up and down is provided in the air guide hole 8; the plug 7 is connected to the negative pressure collecting cup 5 and can slide up and down inside the air guide hole 8, and a cavity which passes through the plug 7 from top to bottom is provided inside the plug 7; the bottom of the plug 7 is connected to the negative pressure collecting cup 5; a horizontal T-shaped structure 71 is provided on the top of the plug 7, and the horizontal length of the T-shaped structure 71 is greater than the inner diameter of the plug 7; when the T-shaped structure 71 contacts the inner wall of the air guide hole 8, the air flow between the manifold 6 and the air guide hole 8 is isolated.

[0023] In some embodiments, a first sealing ring 9 and a second sealing ring 10 are provided at the connection between the air guide hole 8 and the inner cavity of the manifold 6, wherein the first sealing ring 9 is connected to the manifold 6, and the second sealing ring 10 is connected to the air guide hole 8. The first sealing ring 9 and the second sealing ring 10 strengthen the air tightness of the air guide hole 8.

[0024] When the bottom of the negative pressure collection cup 5 does not contact the battery 2, the plug 7 blocks the inner wall of the air guide hole 8 through the T-shaped structure 71. At this time, the negative pressure collection cup 5 is connected to the external environment and isolated from the manifold 6; when the bottom of the negative pressure collection cup 5 contacts the liquid filling port of the battery 2, the plug 7 is pushed upward, the T-shaped structure 71 does not contact the air guide hole 8, and the negative pressure collection cup absorbs the exhaust gas in the battery 2 normally.

[0025] The beneficial effects of the present invention are: the workstation without battery is kept closed, the workstation with battery is turned on, the staff does not need to replenish dummy batteries, the manual operation time is reduced, the air tightness is kept stable, and the work efficiency is improved.

[0026] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A negative pressure collection device for a square lithium battery, comprising a metal frame (3), the bottom frame of the metal frame (3) being loaded with an external battery (2), and the top frame of the metal frame (3) being provided with a negative pressure collection mechanism (1), characterized in that: The negative pressure collection mechanism (1) comprises a collector frame (4), wherein the collector frame (4) is longitudinally connected to the top frame of the metal frame (3); the bottom of the collector frame (4) is connected to negative pressure collection cups (5) arranged longitudinally; the collector frame (4) is internally provided with a collector pipe (6), and a vertical air guide hole (8) is provided at the connection between the negative pressure collection cup (5) and the collector pipe (6); the upper part of the air guide hole (8) is connected to the inner cavity of the collector pipe (6), and the lower part of the air guide hole (8) is connected to the inner cavity of the negative pressure collection cup (5); the bottom of the negative pressure collection cup (5) is provided with an opening; A plug (7) that can slide up and down is provided in the air guide hole (8); the plug (7) is connected to the negative pressure collection cup (5) and can slide up and down inside the air guide hole (8); a cavity that passes through from top to bottom is provided inside the plug (7); the bottom of the plug (7) is connected to the negative pressure collection cup (5); a horizontal T-shaped structure (71) is provided on the top of the plug (7), and the horizontal length of the T-shaped structure (71) is greater than the inner diameter of the plug (7); when the T-shaped structure (71) contacts the inner wall of the air guide hole (8), the air flow between the manifold (6) and the air guide hole (8) is blocked.

2. A square lithium battery negative pressure collection device according to claim 1, characterized in that: A first sealing ring (9) and a second sealing ring (10) are provided at the connection between the air guide hole (8) and the inner cavity of the manifold (6); the first sealing ring (9) is connected to the manifold (6), and the second sealing ring (10) is connected to the air guide hole (8).

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