CN218101481U - battery restraint tray - Google Patents

Abstract

The utility model relates to a battery restraint tray, which comprises a tray body, a restraint unit and a positioning unit; tray body is used for the bearing battery, restricts the unit and includes that a plurality of on the tray body are located to the interval restrict the portion to it is formed with the chamber that holds that is used for holding the battery to restrict between the portion to arbitrary adjacent two, and at least adjacent two are restricted two sides that the portion is relative each other and are constructed the cambered surface that the middle part is uplifted respectively. The positioning unit is arranged on the tray body and can be operated to abut against the outermost restraint part so as to form the clamping of the restraint unit on the battery. Tray is restricted to battery, construct the cambered surface of middle part uplift respectively through two sides that restrict portion relative each other adjacent two at least, can make these two portions of restricting exert great restriction power to the middle part of locating battery between the two from this to can improve the homogeneity of the power of restricting to each position of battery, and then can effectively prevent the battery bulge from appearing at the pre-charge in-process.

Description

battery restraint tray

technical field

The utility model relates to the technical field of tooling for manufacturing lithium batteries, in particular to a battery restraint tray.

Background technique

Lithium batteries have been gradually applied to people's daily life, especially in digital products and the automobile industry. Among them, in the lithium battery manufacturing process, precharging the lithium battery is a relatively important process, that is, the battery after the liquid injection is charged and discharged for the first time to activate the active material inside the battery. At the same time, pre-charging is also an important stage in the formation of SEI film (solid electrolyte interphase, solid electrolyte interface). The quality of pre-charging largely determines the interface and performance of the battery.

During the charge and discharge process of the lithium battery, due to the characteristics of the negative electrode active material and glue, the expansion will occur, which will increase the gap between the positive and negative electrodes of the battery and cause black spots on the negative electrode interface of the battery. Since battery expansion is unavoidable during charging and discharging, the battery is usually restrained by restraint trays during charging and discharging, so as to reduce the expansion of the battery by external force. Usually, the swelling is most severe at the central position of the battery, and the mechanical properties of the battery case at this position are weak and easy to deform. Due to the unreasonable design, the existing restraint trays cannot effectively ensure the uniform force on each point when the battery is restrained, which leads to the phenomenon that the battery is prone to bulging.

Utility model content

In view of this, the utility model aims to provide a battery restraint tray, which can effectively prevent at least some batteries from bulging during the precharging process.

In order to achieve the above object, the technical solution of the utility model is achieved in that:

A battery restraint tray, including a tray body, a restraint unit and a positioning unit; wherein,

The tray body is used to support the battery;

The constraining unit includes a plurality of constraining parts arranged at intervals on the tray body, and an accommodating cavity for accommodating the battery is formed between any two adjacent constraining parts, and at least two adjacent The two opposite sides of the constraining portion are respectively configured as curved surfaces raised in the middle;

The positioning unit is arranged on the tray body, and can be manipulated to abut against the outermost constraining portion, so as to form the clamping of the battery by the constraining unit.

Further, the two opposite side surfaces of each constraining portion are configured as arc surfaces raised in the middle; each constraining portion abuts against the battery through the arcuate surfaces.

Further, the constraining part includes a main body located in the middle, and wear-resistant bodies arranged on two opposite sides of the main body, and the arc surface is formed on the wear-resistant bodies; and the main body is made of metal.

Further, the wear-resistant body is made of polytetrafluoroethylene or polyoxymethylene.

Further, the wear-resistant body is covered with a rubber body; the rubber body is arranged in conformity with the wear-resistant body.

Further, the thickness of the rubber body is between 0.4-0.6mm.

Further, the protrusion height of the arc surface is between 1-4mm.

Further, at least one of the restraint parts is formed with a pressure detection part for detecting the expansion force exerted by the battery on the restraint part.

Further, the tray body has a bottom plate, and two side plates arranged at both ends of the bottom plate; the positioning unit includes a bolt screwed on at least one of the side plates; the rod of the bolt can withstand Tightly on the outermost restraint part, so as to form the clamping of the battery by the restraint unit.

Further, two end restraint structures located at both ends of the restraint unit are provided on the tray body; the accommodating cavity is formed between the end restraint structures and the adjacent restraint parts; the The side of the end restraint structure facing the accommodating cavity is configured as the arc surface, and the other side is configured as a plane; the bolt can be manipulated to abut against the plane of the end restraint structure superior.

Compared with the prior art, the utility model has the following advantages:

The battery restraint tray described in the utility model can make the two restraint parts opposite to each other by configuring the two side faces of at least two adjacent restraint parts opposite to each other as a raised arc surface in the middle. The central part of the battery in between exerts a larger binding force, thereby improving the uniformity of the binding force on each part of the battery, and effectively preventing the battery from bulging during the pre-charging process.

In addition, the two opposite side surfaces of each constraining portion are configured as curved surfaces with a bulge in the middle, which can effectively prevent the batteries disposed in each accommodating cavity from bulging. The binding part includes a main body and a wear-resistant body arranged on the opposite side of the main body, and the main body is made of metal, which can improve the binding effect of the binding part on the battery. The wear body is made of polytetrafluoroethylene or polyoxymethylene, which can make it have better wear resistance and deformation resistance.

Secondly, by covering the wear-resistant body with a rubber body conforming to the shape of the wear-resistant body, the battery casing can be effectively protected, and the binding force and battery expansion force can be balanced. Setting the thickness of the rubber body to 0.4-0.6 mm not only has a better protection effect on the battery case, but also enables the restraint part to exert a better restraint force on the battery. By providing a pressure detection part, it can be used to detect the expansion force exerted by the battery on the restraint part.

In addition, the positioning unit includes a bolt, and the rod portion of the bolt abuts against the outermost constraining portion to realize the clamping of the battery by the constraining unit, which has a simple structure and is convenient for design and implementation. By setting the end constraining part and making one side of the arc surface and the other side as a plane, not only can the battery be placed between the end constraining part and the adjacent constraining part, but also the bolts can improve the restraint The pressing effect of the unit can improve the clamping effect of the battery restraint tray on the battery.

Description of drawings

The accompanying drawings constituting a part of the utility model are used to provide a further understanding of the utility model, and the schematic embodiments of the utility model and their descriptions are used to explain the utility model, and do not constitute improper limitations to the utility model. In the attached picture:

Figure 1 is a schematic structural view of the battery restraint tray described in the embodiment of the present invention;

Fig. 2 is an enlarged view of part A in Fig. 1;

Fig. 3 is another structural schematic diagram of the battery restraint tray according to the embodiment of the present invention.

Explanation of reference signs:

1. Tray body; 101, bottom plate; 102, side plate;

2. Restraining part; 201, main body; 202, wear-resistant body; 203, rubber body;

3. Connecting rod; 4. Bolt; 5. Pressure sensor; 6. End restraint structure.

detailed description

It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "back" and the like are based on the orientation or positional relationship shown in the accompanying drawings, and are only In order to facilitate the description of the present invention and simplify the description, it does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be understood as indicating or implying relative importance.

In addition, in the description of the present utility model, unless otherwise clearly defined, the terms "installation", "connection", "connection" and "connector" should be interpreted in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary; connected. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in combination with specific situations.

The utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

This embodiment relates to a battery constraining tray, which includes a tray body 1 , a constraining unit and a positioning unit in terms of overall composition.

Wherein, the tray body 1 is used to support the battery. The restraint unit includes a plurality of restraint parts 2 arranged at intervals on the tray body 1, and an accommodating cavity for accommodating batteries is formed between any two adjacent restraint parts 2, and at least two adjacent restraint parts 2 are opposite to each other The two side surfaces of the two sides are respectively constructed as a curved surface with a bulge in the middle. The positioning unit is arranged on the tray body 1 and can be manipulated to abut against the outermost constraining part 2 to form the clamping of the battery by the constraining unit.

In the battery restraint tray of this embodiment, the two opposite sides of at least two adjacent restraint parts 2 are respectively configured as a raised arc surface in the middle, so that the two restraint parts 2 can be arranged in pairs between the two. The central part of the battery in between exerts a larger binding force, thereby improving the uniformity of the binding force on each part of the battery, and effectively preventing the battery from bulging during the pre-charging process.

Based on the overall structure above, an exemplary structure of the battery restraint tray of this embodiment is shown in FIG. 1 , wherein the tray body 1 has a bottom plate 101 and two side plates 102 provided at both ends of the bottom plate 101 . In order to improve the overall aesthetics of the battery restraint tray, the tray body 1 also has two end plates located at the other two ends of the bottom plate 101, so that the bottom plate 101, the side plates 102 and the end plates are surrounded by a structure with an opening at the top. cavity. Moreover, in practice, the whole tray body 1 can be made of insulating non-metallic material, or the tray body 1 can be made of metal, and an insulating layer can be coated on the outside.

In addition, in order to facilitate the installation of the above-mentioned constraining portion 2, a connecting rod 3 is connected between the two side plates 102, and as a preferred embodiment, the connecting rod 3 of this embodiment is respectively provided on both sides of the tray body 1, And further, the connecting rods 3 on each side may be multiple arranged at intervals along the height direction of the tray body 1 .

The above-mentioned constraining unit is arranged in the cavity, and each constraining part 2 is slidably arranged in the cavity. Specifically, each constraining part 2 is formed with a via hole corresponding to each connecting rod 3, and a plurality of connecting rods 3 pass through respectively. Each constraining part 2 is provided and can allow each constraining part 2 to slide along the connecting rod 3, so that when the positioning unit presses against the outermost constraining part 2, the constraining unit can clamp the battery disposed in each accommodating cavity.

As shown in Figure 1, in order to make the battery restraint tray have a better use effect, the two opposite sides of each restraint part 2 are configured as a raised arc surface in the middle, and each restraint part 2 is pressed against by the arc surface. on the battery. Specifically, as shown in FIG. 2 , the constraining portion 2 includes a main body 201 located in the middle, and wear-resistant bodies 202 arranged on two opposite sides of the main body 201. The above-mentioned arc surface is formed on the wear-resistant body 202; and the main body 201 It is made of metal, so that the binding part 2 can exert a relatively large binding force on the battery. In addition, the wear-resistant body 202 of this embodiment can be specifically made of polytetrafluoroethylene or polyoxymethylene, so that it has better wear resistance and deformation resistance.

Moreover, generally, when most batteries are not restrained, they can have a bulge of 0-3mm, as shown in Figure 1, in order to meet the needs of most batteries, the protruding height H of the arc surface is between 1-4mm, For example, it can be set to 1mm, 2mm, 3mm or 4mm. Wherein, as a preferred implementation manner, the protruding height H of the arc surface of the constraining part in this embodiment is 2.5 mm.

In addition, in order to improve the use effect, as shown in FIG. 2 , a rubber body 203 is covered on the wear-resistant body 202 , and the rubber body 203 is arranged along with the wear-resistant body 202 . By providing the rubber body 203, the battery casing can be effectively protected, and the binding force and battery expansion force can be balanced. Moreover, the rubber body 203 can be specifically made of silica gel, and its thickness is between 0.4-0.6 mm, and is preferably set to 0.5 mm. In this embodiment, by setting the thickness of the rubber body 203 to 0.4-0.6 mm, not only can it have a better protection effect on the battery case, but also the binding part 2 can exert a better binding force on the battery.

In addition, in order to further improve the use effect, as shown in FIG. 2 , each constraining portion 2 is provided with a pressure detection portion for detecting the expansion force exerted by the battery on the constraining portion 2 . Wherein, the pressure detection part is specifically arranged in the main body 201, and the pressure sensor 5 can be used. Moreover, since each constraining portion 2 constrains the two batteries on both sides thereof, the pressure sensors 5 on each constraining portion 2 are preferably two oppositely arranged. And during specific implementation, the pressure sensor 5 can be connected with an external display screen with reference to the prior art, so as to observe the expansion force exerted by the battery on the restraint portion 2 in real time. Here, it should be mentioned that, instead of disposing the pressure detection part on all the restraint parts 2 , the pressure detection part can also be provided only on some restraint parts 2 .

The positioning unit of the present embodiment includes the bolt 4 screwed on at least one side plate 102 thereof, and as a specific implementation manner, as shown in Fig. 1, the bolt 4 of the present embodiment is only located in the state of Fig. 1 The side panel 102 on the right side is shown. In addition, in order to improve the restraint effect on the battery, the bolts 4 of this embodiment are respectively provided at both ends of the right side plate 102 . Moreover, the rods of the bolts 4 can be pressed against the rightmost constraining portion 2 to form the constraining unit for clamping the battery.

Based on the above-mentioned two side surfaces of each constraining part 2 being arc surfaces, in order to improve the effect of the bolts 4 on the constraining units, as a further embodiment, as shown in FIG. 3 , the tray body 1 is also provided with Two end restraint structures 6 located at both ends of the restraint unit. An accommodating cavity is formed between the end restraint structure 6 and the adjacent restraint portion 2 for accommodating a battery. In addition, the side of the end restraint structure 6 facing the accommodation cavity is configured as an arc surface, and the other side is configured as a plane, and the bolt 4 can be manipulated to be pressed against the plane of the end restraint structure 6, thereby improving The positioning effect of bolt 4 on the restraint unit.

Wherein, the end constraining structure 6 has the same overall structure as the constraining portion 2, which includes an end body made of metal, and a wear-resistant body made of polytetrafluoroethylene or polyoxymethylene is covered outside the end body. 202, and the wear-resistant body 202 is covered with a rubber body 203 that is arranged in conformity with it. Moreover, the structure of the wear-resistant body 202 and the rubber body 203 of the restraining structure 6 at the end is the same as that of the wear-resistant body 202 and the rubber body 203 of the restriction part 2 . In addition, a pressure detection part for detecting the expansion force exerted by the battery on the end constraining structure 6 is also provided in the end body.

When using the battery restraint tray of this embodiment, first place each battery in each accommodation cavity, and then rotate the bolt 4 so that the bolt 4 is close to the end restraint structure 6 on the right side, and is pressed against the end restraint structure 6, so that the battery is sandwiched between two adjacent restraints 2, or sandwiched between the end restraint structure 6 and the restraint 2; then, it is sufficient to precharge each battery, and The expansion force exerted by the battery on the restraint part 2 and the end restraint structure 6 can be observed in real time through the external display screen.

The battery constraining tray of the present embodiment, by using constraining portion 2 and end constraining structure 6 to be used to abut against the side face of battery and form the arc surface that the middle part rises, thus can make constraining portion 2 and end constraining structure 6 to the battery The central part exerts a larger binding force, which can improve the uniformity of the binding force on each part of the battery, and can effectively prevent the battery from bulging during the pre-charging process.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in the Within the protection scope of the present utility model.

Claims (10)

1. A battery restraint tray, comprising: comprises a tray body (1), a restraining unit and a positioning unit; wherein,

the tray body (1) is used for supporting the battery;

the restraint unit comprises a plurality of restraint parts (2) which are arranged on the tray body (1) at intervals, an accommodating cavity for accommodating the battery is formed between any two adjacent restraint parts (2), and two opposite side surfaces of at least two adjacent restraint parts (2) are respectively formed into cambered surfaces with raised middles;

the positioning unit is arranged on the tray body (1) and can be operated to abut against the restraint part (2) at the outermost part so as to form clamping of the restraint unit on the battery.

2. The battery containment tray of claim 1, wherein:

two opposite side surfaces of each restraint part (2) are both formed into cambered surfaces with raised middle parts;

each restraining part (2) is abutted against the battery through the cambered surface.

3. The battery containment tray of claim 2, wherein:

the restraint part (2) comprises a main body (201) positioned in the middle and wear-resistant bodies (202) arranged on two opposite sides of the main body (201), and the cambered surfaces are formed on the wear-resistant bodies (202);

and, the main body (201) is made of metal.

4. The battery containment tray of claim 3, wherein:

the wear-resistant body (202) is made of polytetrafluoroethylene or polyoxymethylene.

5. The battery containment tray of claim 3, wherein:

a rubber body (203) is covered on the wear-resistant body (202);

the rubber body (203) and the wear-resistant body (202) are arranged in a shape following mode.

6. The battery containment tray of claim 5, wherein:

the thickness of the rubber body (203) is between 0.4 and 0.6 mm.

7. The battery containment tray of claim 1, wherein:

the protruding height of the cambered surface is 1-4 mm.

8. The battery containment tray of claim 1, wherein:

at least one of the restraint parts (2) is provided with a pressure detection part for detecting the expansion force applied to the restraint part (2) by the battery.

9. The battery containment tray of any one of claims 1-8, wherein:

the tray body (1) is provided with a bottom plate (101) and two side plates (102) arranged at two ends of the bottom plate (101);

the positioning unit comprises a bolt (4) screwed on at least one side plate (102) of the positioning unit;

the rod part of the bolt (4) can be abutted against the restraint part (2) at the outermost part, so that the restraint unit can clamp the battery.

10. The battery containment tray of claim 9, wherein:

two end restraining structures (6) positioned at two ends of the restraining unit are arranged on the tray body (1);

the accommodating cavity is formed between the end restraining structure (6) and the adjacent restraining part (2);

the side surface of the end restraining structure (6) facing one side of the accommodating cavity is configured into the cambered surface, and the other side is configured into a plane;

the bolt (4) can be manipulated against the plane of the end restraint structure (6).

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