Transfer tray for protecting soft package lithium ion battery tabs

Abstract

The utility model belongs to the technical field of lithium ion batteries, and particularly relates to a transfer tray for protecting soft package lithium ion battery tabs, which comprises a tray body, the upper surface of the tray body is provided with a plurality of downwards sunken battery cell accommodating grooves, and the top ends of the battery cell accommodating grooves are respectively provided with two concentric-square-shaped grooves for accommodating and protecting the tabs. Through the design of the clip-shaped groove of the pole lug, the pole lug of the lithium ion soft package battery is properly placed, shielded and protected, so that the production yield is improved, the safety is improved, and the subsequent electrical performance is ensured. Meanwhile, the space above the concentric-square-shaped groove can play the same role as other buckle grooves, namely, the bottom of another tray is supported in a suspended mode, on the basis that battery containing is guaranteed, the effect of tightly buckling the trays is achieved, the stacking stability is guaranteed, the transfer safety is improved, and the workshop utilization rate is reasonably saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of lithium-ion batteries, and in particular relates to a transport tray for protecting tabs of soft-pack lithium-ion batteries. Background Art

[0002] As one of the new chemical energy sources, lithium-ion batteries have advantages over traditional energy sources such as high operating voltage, high specific energy and environmental friendliness. Lithium-ion batteries mainly come in square shell, cylindrical, soft pack, button and other forms. Soft pack batteries are different from batteries with other appearance forms. Their own structure does not have a solid metal shell. Therefore, in order to prevent wear and dust contact, transfer pallets are usually used for support, turnover, transportation and placement. A Chinese patent discloses a soft pack battery pallet, publication number CN215220906U. Positioning grooves and positioning protrusions are respectively provided on the upper and lower surface sides of the pallet body. This stacking arrangement avoids the wear caused by the pallet body directly applying force to the battery surface. However, this structure cannot accommodate, fix and protect the tabs of the soft pack battery. Utility Model Content

[0003] The purpose of the utility model is to provide a transfer tray for protecting the tabs of soft-pack lithium-ion batteries, thereby solving the problems existing in the prior art.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a transfer pallet for protecting the tabs of soft-pack lithium-ion batteries, comprising a pallet body, the upper surface of the pallet body being provided with a plurality of downwardly concave battery cell accommodating grooves, the top of each of the battery cell accommodating grooves being provided with two return grooves that can be used to accommodate and protect the tabs.

[0005] Preferably, snap grooves are provided on the left and right sides of the tray body and in the middle of the two battery cell accommodating slots.

[0006] Preferably, the length, width and recessed depth of the battery cell accommodating groove are greater than the size of the placed battery cell.

[0007] Preferably, the uppermost layer of the return groove is closed, recessed downward relative to the highest horizontal surface of the tray, the lowermost layer of the return groove is flush with the bottom of the battery cell accommodating groove, and the size of the return groove is slightly larger than the size of the tab.

[0008] Preferably, the snap groove is symmetrically designed, is flush with the middle of each battery cell accommodating groove, and has the same recessed depth as the top layer of the tab return groove.

[0009] Preferably, the upper surface of the return groove and the surface of the buckle groove are both frosted.

[0010] Preferably, all corners of the grooves inside the tray body are chamfered.

[0011] Preferably, the tray body is provided with four, six or more even-numbered battery cell accommodating slots.

[0012] Preferably, the tray body is manufactured by one-piece molding technology.

[0013] Preferably, the tray body is made of plastic.

[0014] Preferably, support plates are integrally formed on both sides of the bottom of the tray body, a spherical head-shaped clamping block is provided at the bottom of the support plate, and a corresponding elongated spherical groove is provided on the upper part of the tray body above the spherical head-shaped clamping block, and the spherical head-shaped clamping block is plugged into the elongated spherical groove.

[0015] The beneficial effects of this utility model are: (1) improving the yield rate of battery cell production. It effectively prevents the tabs from bending or breaking due to external forces during the production process, reducing rework and scrap costs; (2) improving overall safety. Customized grooves with precise positions are provided for each battery's positive and negative tabs to ensure perfect embedding and avoid short circuits caused by contact with other components during transportation due to shaking; (3) maintaining high-performance output of the battery cell. Through the groove design, the tabs are properly fixed and shielded, reducing direct contact with air and humidity, effectively preventing oxidation, extending battery life, and indirectly improving the electrical performance of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front perspective view of the present utility model;

[0017] Figure 2 It is a bottom perspective view of the utility model;

[0018] Figure 3 This is a three-dimensional diagram of the return groove in the utility model;

[0019] Figure 4 This is an enlarged view of the return groove in the utility model;

[0020] Figure 5 This is a partial enlarged view of another embodiment of the tray body in the present invention;

[0021] Figure 6 for Figure 5 Application diagram of

[0022] Explanation of the accompanying symbols: 1. Tray body; 2. Battery cell accommodating groove; 3. Return groove; 3-1. Upper pole ear return groove; 3-2. Lower pole ear return groove; 4. Side snap groove; 4-1. Left side snap groove; 4-2. Right side snap groove; 5. Middle snap groove. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, features defined as "first", "second" and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0025] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixedly connected," and "fixed connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art can understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0026] The specific implementation of the present invention is described in detail below with reference to the accompanying drawings and preferred embodiments.

[0027] like Figure 1 and Figure 2 As shown, a transfer pallet for protecting the tabs of soft-pack lithium-ion batteries includes a pallet body 1, the upper surface of which is provided with a plurality of downwardly concave battery cell accommodating grooves 2, and the top of each of the battery cell accommodating grooves is provided with two return grooves 3 that can be used to accommodate and protect the tabs.

[0028] The tray body 1 is made of environmentally friendly, high-strength plastic using a one-piece compression molding process. Inside, it features a recessed cell accommodating slot 2, which houses the tabs' retaining grooves 3, side snap-in grooves 4 (left side snap-in groove 4-1 and right side snap-in groove 4-2), and a central snap-in groove 5. Each slot has a slightly chamfered corner to minimize impact and damage to the pouch cells during handling.

[0029] A tray body 1 includes four battery cell accommodating grooves 2. The recessed depth h2 of the accommodating groove is greater than the battery cell thickness h0. The length and width of the accommodating groove are slightly larger than the battery cell size. While ensuring the accommodation, it avoids the contact friction between the upper surface of the battery cell and the bottom of the tray when the trays are stacked.

[0030] like Figure 3 and Figure 4 As shown, the length and width of the tab-protecting groove 3 are slightly larger than the tab size to ensure that the tab is completely shielded; the tab-protecting groove 3 is sealed at the top, and the sealing layer divides the space into two parts: the upper tab-protecting groove 3-1 and the lower tab-protecting groove 3-2. The upper tab-protecting groove 3-1 has a certain depth relative to the highest horizontal surface of the tray, which is used for engagement and fixation when the trays are stacked up and down. The depth of the depression is h 3-1 The bottom of the lower tab back-shaped groove 3-2 is flush with the bottom of the cell receiving groove 2, which is used to accommodate and protect the tab. The groove depth is h 3-2 , h 3-1 +h 3-2 =h2, and h 3-2 >1 / 2*h0, which can ensure that the soft pack battery tabs can be inserted smoothly.

[0031] The left side snap groove 4-1 and the right side snap groove 4-2 are located on the left and right sides of the tray body 1 respectively, with a symmetrical design and a groove depth of h4; the middle snap groove 5 is located between the two battery cell accommodating grooves 2, with a groove depth of h5, and h 3-1 =h4=h5; the positions of the left side snap groove 4-1 and the right side snap groove 4-2 are flush with the middle of each battery cell accommodating slot 2.

[0032] The upper and lower surfaces of the left side snap groove 4-1 and the right side snap groove 4-2, as well as the upper surface of the upper layer 3-1 of the tab return groove are all frosted. The three structures have the same function, which is a multi-level stacking stabilization design for pallets to ensure that the transfer pallets are tightly engaged when stacked to prevent sliding and deviation.

[0033] Since the transfer trays will slip if they are not tightly engaged when stacked, causing the batteries to fall off the transfer trays and break. Therefore, this device further improves the transfer trays, such as Figure 5 As shown, support plates 12 are integrally formed on both sides of the bottom of the transfer tray. A ball-shaped block 13 is provided at the bottom of the support plate. A corresponding long spherical groove 11 is provided on the upper part of the tray body above the spherical block. The ball-shaped block is plugged into the long spherical groove. When in use, Figure 6 As shown, the spherical head cards 13 in the top transfer tray will be stuck in the elongated spherical grooves 11 in the next layer of transfer tray. In the present invention, the tray body is made of high-density polyethylene or polypropylene, and the support plate and the elongated spherical grooves are integrally injection molded.

[0034] This new design utilizes a lug-shaped slot design to properly position, shield, and protect the lugs of lithium-ion soft-pack batteries, helping to improve production yield, enhance safety, and ensure subsequent electrical performance. Furthermore, the space above the slot serves the same purpose as other snap-in grooves: it provides suspended support for the bottom of another tray, ensuring battery storage while also securing the trays together. This ensures stacking stability, improves transportation safety, and significantly reduces workshop utilization.

[0035] For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as the scope of protection of the present invention.

Claims

1. A transfer tray for protecting the tabs of soft-pack lithium-ion batteries, characterized by: It includes a tray body, the upper surface of which is provided with a plurality of downwardly concave battery cell accommodating grooves, and the top of each battery cell accommodating groove is provided with two return grooves that can be used to accommodate and protect the tabs; the uppermost layer of the return groove is closed, and the uppermost layer of the return groove is concave downward relative to the highest horizontal surface of the tray, and the lowermost layer of the return groove is flush with the bottom of the battery cell accommodating groove, and the size of the return groove is slightly larger than the size of the tab.

2. The transfer tray for protecting the tabs of soft-pack lithium-ion batteries according to claim 1, characterized in that: The left and right sides of the tray body and the middle position of the two battery cell accommodating slots are all provided with snap grooves.

3. The transfer tray for protecting the tabs of soft-pack lithium-ion batteries according to claim 1, characterized in that: The length, width and recessed depth of the battery cell receiving groove are greater than the size of the battery cell placed therein.

4. The transfer tray for protecting the tabs of soft-pack lithium-ion batteries according to claim 2, characterized in that: The snap groove is symmetrically designed, and its position is flush with the middle of each battery cell accommodating groove, and the depth of the recess is the same as the top layer of the return groove.

5. The transfer tray for protecting the tabs of soft-pack lithium-ion batteries according to claim 4, characterized in that: The upper surface of the return groove and the surface of the buckle groove are both frosted.

6. The transfer tray for protecting the tabs of soft-pack lithium-ion batteries according to claim 1, characterized in that: The corners of all grooves designed inside the tray body are chamfered.

7. The transfer tray for protecting the tabs of soft-pack lithium-ion batteries according to claim 1, characterized in that: The tray body is provided with four, six or more even-numbered battery cell accommodating slots inside.

8. The transfer tray for protecting the tabs of soft-pack lithium-ion batteries according to claim 1, characterized in that: The tray body is manufactured by an integrated molding technology.

9. The transfer tray for protecting the tabs of soft-pack lithium-ion batteries according to claim 1, characterized in that: The bottom of the tray body is provided with support plates on both sides, and a spherical block is provided at the bottom of the support plate. A corresponding elongated spherical groove is provided on the upper part of the tray body above the spherical block, and the spherical block is plugged into the elongated spherical groove.

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