tray

Abstract

The present application belongs to the technical field of lithium batteries, and particularly relates to a tray, which comprises a frame body, a plurality of clamps respectively slidingly sleeved on the frame body, two adjacent clamps forming an electric core groove with adjustable length and used for accommodating an electric core between the two adjacent clamps, each clamp being provided with a blocking part used for separating two adjacent electric cores, and two adjacent electric core grooves being partially communicated, and a limiting piece being detachably connected to the frame body. In the present application, the electric core groove with adjustable length is formed between two adjacent clamps, the blocking part of the clamp can separate the electric core groove, and electric cores with different size specifications can be placed in the electric core groove. Then, the clamps are locked by the limiting piece. The tray can be used for multiple batches of single or multiple different models of square electric cores without changing the type, or can be used for single batch of multiple different models of square electric cores without changing the type. The tray has high universality, is convenient to operate, can effectively save cost and improve baking efficiency.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of lithium batteries, and particularly relates to a tray. BACKGROUND

[0002] In the process of manufacturing lithium ion batteries, the battery cells need to be baked to complete the water removal treatment. Usually, the battery cells are placed in a tray, and then the tray is placed in an oven for baking. The existing tray needs to be designed for different models and specifications of battery cells, and cannot store and place battery cells of different models and specifications in the same tray, so the versatility is small, and the baking efficiency is low. SUMMARY

[0003] The purpose of the present application is to provide a tray to solve the technical problem of poor versatility of the tray in the prior art.

[0004] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows: a tray comprising:

[0005] a frame body surrounding a containing portion, the containing portion being open at least at the top;

[0006] a plurality of clamps, each slidingly sleeved on the frame body, two adjacent clamps forming an adjustable length battery cell slot for containing battery cells, each clamp being provided with a blocking portion for separating two adjacent battery cells, and two adjacent battery cell slots being partially connected to allow hot air to pass through, thereby improving the baking efficiency;

[0007] a limiting piece detachably connected to the frame body for locking the frame body when the containing portion stores battery cells, so as to prevent the clamps from sliding relative to the frame body.

[0008] Further, each clamp comprises two clamping blocks oppositely and spaced apart on the frame, each clamping block comprising a side plate, a bottom plate and an inclined plate, the side plate being connected with the bottom plate and perpendicular to the bottom plate, the two ends of the inclined plate being connected with the side plate and the bottom plate respectively, the side plate, the bottom plate and the inclined plate surrounding a communication groove penetrating through two adjacent battery cell slots, the inclined plates of the two clamping blocks forming the blocking portion, and the width of the inclined plate being smaller than the width of the bottom plate, so that at least one side of the bottom plate forms an abutting surface for the battery cell to abut against.

[0009] Further, the cross section of the communication groove is a right-angled triangle.

[0010] Further, among the two clamps near the two ends of the length direction of the frame body, the outer side surface of the inclined plate of the clamping block is coplanar with the outer side surface of the bottom plate, so that the inner side of the bottom plate forms the abutting surface, and among the remaining clamps, both sides of the inclined plate of the clamping block form the abutting surface.

[0011] Further, in a direction perpendicular to the side plate, the length of the projection of the inclined plate is equal to or greater than half the height of the side plate.

[0012] Further, an extension section is connected to one end of the inclined plate close to the side plate, the extension section is connected to the inner wall of the side plate, and the extension section extends away from the bottom plate.

[0013] Further, the top surface of the extension section is flush with or below the top surface of the side plate.

[0014] Further, the tray is provided with a plurality of frame bodies arranged side by side, and each frame body is slidingly provided with a plurality of clamps.

[0015] Further, the frame body includes two end plates arranged opposite to each other and a plurality of connecting rods connected between the two end plates, each connecting rod is arranged in parallel and at intervals, and the clamp is provided with a through hole matched with the connecting rod.

[0016] Further, the connecting rod includes a first connecting rod for forming a side frame of the frame body and a second connecting rod for forming a bottom frame of the frame body, and the side frame and the bottom frame of the frame body share one first connecting rod.

[0017] The tray of the present application has the following advantages: the tray of the present application is provided with a plurality of clamps slidingly arranged on the frame body, a length-adjustable battery cell groove is formed between two adjacent clamps, the blocking part of the clamp can separate the battery cell grooves, and square battery cells of different sizes can be placed in the battery cell grooves. After the square battery cells are placed, the clamps can be locked by the limiting piece, so that all the square battery cells are fixed in the battery cell grooves. In this way, the tray can be used for multiple batches of single or multiple different models of square battery cells without changing the type, and can be used for single batch of multiple different models of batteries without changing the type. The tray has strong versatility, convenient operation, can effectively save cost and improve baking efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0019] Figure 1 The present application provides a tray for a three-dimensional structure schematic diagram of an embodiment of the present application;

[0020] Figure 2 The present application provides a tray for a three-dimensional structure schematic diagram of an embodiment of the present application; Figure 1 The present application provides a tray for a three-dimensional structure schematic diagram of an embodiment of the present application;

[0021] Figure 3 for Figure 1 The tray shown is a schematic diagram of the structure with square battery cells;

[0022] Figure 4 This is a schematic diagram of the national standard square power battery specifications and dimensions;

[0023] Figure 5 for Figure 1 The schematic diagram of the structure of the tray placed in the oven;

[0024] Figure 6 for Figure 1 A schematic diagram of the three-dimensional structure of a clamping block of the clamp in the tray shown;

[0025] Figure 7 for Figure 6 A schematic side view of the structure of the clamping block shown;

[0026] Figure 8 for Figure 1 A schematic diagram of the partial installation of the clamping block on one side of the frame in the tray shown;

[0027] Figure 9 For square battery cells Figure 1 Schematic diagram of the process when the battery cell slot of the tray is shown;

[0028] Figure 10 For square battery cells Figure 1 A schematic diagram of the three-dimensional structure behind the battery cell slot of the tray shown;

[0029] Figure 11 For square battery cells Figure 1 The side view of the structure behind the battery cell slot of the tray shown Figure 1 ;

[0030] Figure 12 For square battery cells Figure 1 The side view of the structure behind the battery cell slot of the tray shown Figure 2 ;

[0031] Figure 13 For square battery cells Figure 1 A schematic diagram of the top view of the structure behind the battery cell slot of the tray shown;

[0032] Figure 14 for Figure 1 The structure diagram of the tray shown is a single batch of square battery cells of various models;

[0033] Figure 15 for Figure 1 An enlarged schematic diagram of the limiter in the tray shown.

[0034] Among them, the reference numerals in the figures are:

[0035] 10 - tray 11 - square cell 100 - frame

[0036] 101 - accommodation portion 102 - cell groove 110 - end plate

[0037] 120 - connecting rod 121 - first connecting rod 122 - second connecting rod

[0038] 200 - clamp 201 - blocking portion 202 - communication groove

[0039] 203 - through hole 204 - through hole 210 - clamping block

[0040] 211 - side plate 212 - bottom plate 2120 - abutting surface

[0041] 213 - inclined plate 2131 - first end 2132 - second end

[0042] 220 - extension section 300 - limiting member 310 - locking block

[0043] 320 - screw rod 330 - handle 400 - oven DETAILED DESCRIPTION

[0044] Embodiments of the present application are described in detail below with reference to examples illustrated in the accompanying drawings, in which the same or similar components have the same or similar designations throughout the several figures. The embodiments described below are examples for explaining the present application and are not intended to be limiting of the present application.

[0045] In the description of the present application, it is to be understood that the orientations or positional relationships indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are merely intended to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0046] In addition, the terms "first" and "second" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified.

[0047] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0048] As shown in Figures 1 to 5 The tray 10 provided by the embodiment of the present application is used for placing a plurality of battery cells, and is particularly suitable for square battery cells 11. The square power battery is named according to three size parameters of square, as shown in Figure 4 N1 is the thickness of the square battery cell, N2 is the width of the square battery cell, and N3 is the height of the square battery cell excluding the pole. The tray 10 can place square battery cells 11 of different sizes and specifications. The tray 10 comprises a frame 100, a plurality of clamps 200 and a limiting piece 300. The frame 100 is a rectangular frame, and the frame 100 surrounds a receiving portion 101 which is at least open at the top. Each clamp 200 is slidably sleeved on the frame 100, and the length-adjustable battery cell groove 102 is formed between the adjacent two clamps 200. The battery cell groove 102 is used to accommodate the square battery cell 11. Each clamp 200 is provided with a blocking portion 201 for separating the adjacent two square battery cells 11. The adjacent two battery cell grooves 102 are partially communicated to provide a heat flow passage for baking the battery cell and improve the baking efficiency. The limiting piece 300 is detachably connected to the frame 100. When the square battery cell 11 is stored in the receiving portion 101, the limiting piece 300 is locked to the frame 100 to prevent the clamp 200 from sliding relative to the frame 100, that is, the cold pressing shaping is realized by locking the limiting piece 300.

[0049] The tray 10 provided by the embodiment can place square battery cells 11 of different sizes and specifications in the battery cell groove 102 by sliding a plurality of clamps 200 on the frame 100, forming a length-adjustable battery cell groove 102 between the two adjacent clamps 200, and separating the battery cell groove 102 by the blocking portion 201 of the clamp 200. After the square battery cell 11 is placed, the clamp 200 can be locked by the limiting piece 300, so that all the square battery cells 11 are fixed in the battery cell groove 102. In this way, the tray 10 can be used for multiple batches of single or multiple different models of square battery cells 11 without changing the type, and can be used for single batch of multiple different models of battery cells without changing the type. It is strong in universality, convenient to operate, can effectively save cost and improve the baking efficiency.

[0050] In combination with the following table and Figure 5 and Figure 14Wherein, N1 is the thickness of the square battery, N2 is the width of the square battery, N3 is the height of the square battery excluding the pole, Table 1 is a size reference table of common square power batteries, and Table 2 is a full-size compatible setting table of square power battery specifications:

[0051] Table 1

[0052]

[0053] Table 2

[0054]

[0055] Figure 14 The structure when the tray 10 is placed with four square battery cells is shown in the middle, and the square battery cells 11 placed in the tray 10 from right to left are 2614891# battery cells (i.e. N1=26, N2=148, N3=91), 3914891# battery cells, 47173166# battery cells, and 71173200# battery cells, which can be successfully and compatibly clamped. Since the clamping blocks 210 of the clamp 200 are slidable, the square batteries of different thicknesses in each series and model in Table 2 can be compatibly clamped, and the distance between the clamping blocks 210 on both sides can be reasonably set, such as 220mm in Table 2, which can compatibly clamp square batteries of different widths in each series and model in Table 2. The top opening of the battery cell groove 102 formed between two adjacent clamps 200 can compatibly clamp square batteries of all different heights in Table 2, so that the two adjacent clamps 200 can compatibly clamp square battery cells of each series and model in Table 2, and the tray 10 has good versatility, and can also meet the clamping requirements of subsequent cold pressing and shaping.

[0056] As shown in Figure 3 , Figure 4 , a single model or multiple different models of square battery cells 11 are sequentially clamped in each battery cell groove 102 of the tray 10, the limiting piece 300 is locked to the frame 100, so that the square battery cells 11 are fixed in the battery cell groove 102, the tray 10 is placed in the oven 400 for baking, and after a certain period of time, the tray 10 is taken out, the limiting piece 300 is loosened from the frame 100, and then each square battery cell 11 is taken out from the tray 10, so that the next batch of square battery cells 11 can be operated. The operation is simple, no model change is needed for square battery cells 11 of different specifications, the cost can be effectively saved, the compatibility is high, and the baking efficiency can be improved as a whole.

[0057] As shown in Figures 6 to 10As shown, in one embodiment, each clamp 200 includes two clamps 210 that are opposite to and spaced apart from each other on the frame 100. Each clamp 210 includes a side plate 211, a bottom plate 212, and an inclined plate 213. The side plate 211 is connected to the bottom plate 212 and is perpendicular to the bottom plate 212. The two ends of the inclined plate 213 are respectively connected to the side plate 211 and the bottom plate 212. The side plates 211, the bottom plate 212, and the inclined plate 213 form a connecting groove 202 that passes through two adjacent battery cell slots 102. The inclined plates 213 of the clamps 210 on both sides jointly form a blocking portion 201. The width of the inclined plate 213 is smaller than the width of the bottom plate 212, so that at least one side of the bottom plate 212 forms a supporting surface 2120 for the square battery cell 11 to abut. In this way, the square battery cell 11 can be stably placed in the battery cell slot 102. In this way, the tray 10 can be compatible with square battery cells 11 of different specifications and sizes through the structure of the clamping block 210, and has good versatility.

[0058] When the square battery cell 11 is placed into the battery cell slot 102 , the bottom surface of the battery cell slot 102 abuts against the bottom plates 212 of the four clamping blocks 210 , and the two side surfaces of the square battery cell 11 abut against the four corresponding inclined plates 213 .

[0059] In one embodiment, the cross-section of the connecting groove 202 is a right triangle, such as an isosceles right triangle. It is understandable that the connecting groove 202 can also be of other shapes, as long as it satisfies the requirements of forming a blocking effect between two adjacent battery cell slots 102 and achieving partial connectivity between the two adjacent battery cell slots 102. In one embodiment, in a direction perpendicular to the side plate 211, the length of the projection of the inclined plate 213 is greater than or equal to half the height of the side plate 211, so that the inclined plates 213 of the two clamping blocks 210 can form an effective barrier between the two adjacent battery cell slots 102 and can also make the square battery cell 11 more stable when placed in the battery cell slot 102.

[0060] like Figures 6 to 13 As shown, in one embodiment, in the two clamps 200 located at the two ends of the frame 100 in the longitudinal direction, the outer side surface of the inclined plate 213 of the clamp 210 is coplanar with the outer side surface of the bottom plate 212, so that the inner side of the bottom plate 212 forms an abutment surface 2120; in the remaining clamps 200, both sides of the inclined plate 213 of the clamp 210 are formed with an abutment surface 2120. In other words, the outer side of the clamp 210 of the clamp 200 located at the two ends of the frame 100 is in contact with the inner end surface of the frame 100, and the bottom plate 212 of the clamp 210 only forms an abutment surface 2120 on the inner side, while the clamp 210 of the other middle clamps 200 has an abutment surface 2120 on both sides of the bottom plate 212 to support the square battery cell 11.

[0061] At least one of the side plate 211, the bottom plate 212 and the inclined plate 213 of the clamping block 210 is provided with a through hole 204 penetrating left and right along the width direction, so that the weight of the clamping block 210 can be reduced, as shown in Figure 6 、 Figure 7 As shown in the drawings, the side plate 211 and the bottom plate 212 of the clamping block 210 are both provided with a through hole 204 in the shape of a ring in cross section.

[0062] In an embodiment, one end of the inclined plate 213 is connected with an extension section 220, the extension section 220 is connected with the inner wall of the side plate 211, the extension section 220 extends away from the bottom plate 212, and the width of the extension section 220 is equal to the width of the inclined plate 213. The provision of the extension section 220 can increase the blocking effect, that is, the extension section 220 also forms a blocking part 201 together with the inclined plate 213 for blocking two adjacent battery cell slots 102, and can better realize the alignment when the square battery cell 11 is placed in the battery cell slot 102.

[0063] Specifically, the inclined plate 213 has opposite first and second ends 2131 and 2132, the first end 2131 is connected to the bottom plate, the second end 2132 is connected to the side plate, and the second end 2132 is connected to the extension section. The connection position of the first end 2131 to the bottom plate 212 can be close to the end of the bottom plate 212 away from the side plate 211.

[0064] In an embodiment, the top surface of the extension section 220 is flush with or below the top surface of the side plate 211, so that when a square battery cell 11 with a large height is placed in the battery cell slot 102, the extension section 220 and the inclined plate 213 can effectively block the square battery cell 11, so that the square battery cell 11 is placed more stably in the battery cell slot 102 and is not easy to shake during the placement operation.

[0065] In an embodiment, the tray 10 is provided with a plurality of frame bodies 100 side by side, and each frame body 100 is slidingly provided with a plurality of clamps 200. That is, each frame body 100 of the tray 10 can place square battery cells 11 of different sizes, and the number of frame bodies 100 can be set according to actual production needs and baking equipment.

[0066] In an embodiment, the frame body 100 comprises two end plates 110 arranged oppositely and a plurality of connecting rods 120 connected between the two end plates 110, each connecting rod 120 is arranged in parallel and spaced, the clamp 200 is provided with a through hole 203 matched with the connecting rod 120, so that the frame body 100 has simple overall structure and light weight, after the square battery cell 11 is clamped and placed in the tray 10, since each side of the frame body 100 has only a small amount of shielding, and the clamping block 210 of the clamp 200 has only a small amount of covering area on the surface of the battery, the battery has a large high-temperature radiation heating area when baking, which can improve the radiation heat transfer efficiency and further optimize the baking efficiency. The through hole 203 can be a circular hole to enable the clamping block 210 to slide on the connecting rod 120. During clamping operation, the square battery cell 11 is placed in each cell groove 102 from left to right, and each time a square battery cell 11 is placed, the corresponding clamp 200 is pushed, and after the last one is placed, the limiting piece 300 is locked.

[0067] In an embodiment, the connecting rod 120 comprises a first connecting rod 121 for forming a side frame of the frame body 100 and a second connecting rod 122 for forming a bottom frame of the frame body 100, and the side frame and the bottom frame of the frame body 100 share a first connecting rod 121. In an embodiment, two first connecting rods 121 and two second connecting rods 122 are provided, and the two share a connecting rod 120, that is, the frame body 100 comprises six connecting rods 120, and three connecting rods 120 are arranged on each clamping block 210. When the frame body 100 is provided with a plurality of accommodating portions 101, such as two accommodating portions 101, the connecting rod 120 is twelve. The frame body 100 has low manufacturing cost, the cooperation structure of the frame body 100 and the clamping block 210 is simple, and efficient baking treatment can be realized. It can be used without changing the type for multiple batches of single or multiple different models of square battery cells 11, and it can also be used without changing the type for single batch of multiple different models of battery cells, and has the advantages of lightweight design, cost saving and optimized baking efficiency.

[0068] In an embodiment, Figure 3 , Figure 15As shown, the limiting member 300 comprises two locking blocks 310, a screw rod 320 and a handle 330. The two locking blocks 310 are connected by the screw rod 320, and the opposite sides of the two locking blocks 310 are provided with recesses, the two recesses form an installation groove adapted to the connecting rod 120, the handle 330 is sleeved and fixed on the screw rod 320, the handle 330 is above the two locking blocks 310, when the handle 330 is rotated, the two locking blocks 310 can lock or release the connecting rod 120, thus, through the operation of the handle 330, the clamping block 210 can be conveniently limited, after the clamping of the square battery cell 11 is completed, the two locking blocks 310 of the limiting member 300 are sleeved on the connecting rod 120, then the screw rod 320 with the handle 330 is inserted, the limiting member 300 is slid to the side corresponding to the clamping block 210, the limiting member 300 is abutted to the clamping block 210, the handle 330 is rotated, the clamping block 210 is fixed relative to the connecting rod 120, the clamping block 210 will not slide relative to the connecting hole, and the operation is simple.

[0069] The above merely describes the preferred embodiments of the present application and is not used to limit the present application, any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A tray characterized by: The utility model relates to a kind of tray and the baking method of battery cell, including: Frame, which forms a receiving portion, the receiving portion is at least top opening, the frame is rectangular frame; A plurality of clamps are respectively slidably disposed on the frame, and a battery cell slot capable of accommodating a battery cell is formed between adjacent two clamps, each clamp is provided with a blocking portion for separating adjacent two battery cells, and part of the battery cell slots between adjacent two clamps are connected to facilitate the flow of hot air, thereby improving the baking efficiency; A limiting member is detachably connected to the frame and is locked to the frame when the receiving portion stores a battery cell, so as to prevent the clamps from sliding relative to the frame. Each clamp includes two clamping blocks oppositely and spaced apart from each other on the frame, each clamping block includes a side plate, a bottom plate and an inclined plate, the side plate is connected to the bottom plate and perpendicular to the bottom plate, the two ends of the inclined plate are connected to the side plate and the bottom plate respectively, the side plate, the bottom plate and the inclined plate form a communication groove penetrating through the adjacent two battery cell slots, the inclined plates of the two clamping blocks form the blocking portion together, the width of the inclined plate is smaller than the width of the bottom plate and the width of the side plate, so that the bottom plate and at least one side of the side plate form a resting surface for the battery cell, and the cross section of the communication groove is a right triangle.

2. The tray of claim 1, wherein: In the two clamps near the length direction ends of the frame, the outer side surface of the inclined plate of the clamping block is coplanar with the outer side surface of the bottom plate, so that the inner side of the bottom plate forms the resting surface, and in the remaining clamps, both sides of the inclined plate of the clamping block form the resting surface.

3. The tray of claim 1, wherein: In the direction perpendicular to the side plate, the length of the projection of the inclined plate is equal to or greater than half the height of the side plate.

4. The tray of claim 1, wherein: The inclined plate is connected to an extension near the end of the side plate, the extension is connected to the inner wall of the side plate, and the extension extends away from the bottom plate.

5. The tray of claim 4, wherein a top surface of the extension is flush with or below a top surface of the side plate.

6. The tray according to any one of claims 1 to 5, characterized in that: The tray is provided with a plurality of frames arranged side by side, and each frame is slidably provided with a plurality of clamps.

7. The tray according to any one of claims 1 to 5, characterized in that: The frame includes two end plates oppositely arranged and a plurality of connecting rods connected between the two end plates, the connecting rods are arranged in parallel and spaced apart, and the clamps are provided with through holes matched with the connecting rods.

8. The tray of claim 7, wherein: The connecting rods include first connecting rods for forming side frames of the frame and second connecting rods for forming bottom frames of the frame, and the side frames and the bottom frames of the frame share one first connecting rod.

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