Battery and electric equipment

Abstract

The utility model belongs to the technical field of batteries, and particularly relates to a battery and electric equipment. The battery comprises a battery shell, the battery shell comprises a first shell and a sealing cover part, and the sealing cover part and the opening end of the first shell are connected in a butt joint mode to form a containing cavity; the battery cell is arranged in the accommodating cavity; wherein the end face, facing the sealing cover piece, of the side wall of the first shell is provided with a first connecting structure, the side, facing the first shell, of the sealing cover piece is provided with a second connecting structure, one of the first connecting structure and the second connecting structure is of a groove structure, and the other is of a protruding structure; the protruding structures are matched with the groove structures in a clamped mode, and the protruding structures and the groove structures are bonded and fixed through an adhesive layer. According to the utility model, the connection and fixation of the battery shell are realized in a clamping matching and gluing manner, so that the deformation of the shell caused by uneven heating due to welding can be avoided, the influence on the appearance of a product caused by bubbles generated after the subsequent coating of an insulating film is prevented, the connection manner is simpler, and the reduction of the manufacturing cost is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of batteries, and in particular relates to batteries and electrical equipment. Background Art

[0002] Lithium batteries are one of the common types of batteries in the new energy field. In the production and manufacturing process of lithium batteries, the common battery shell assembly operation currently needs to be fixed by welding, such as laser welding between the top cover and the shell. Since the shell is heated unevenly during the welding process, it is easy to deform, which leads to bubbles when the battery is subsequently coated with an insulating film, resulting in poor product appearance. Although some manufacturers have provided a method of installing a sealing ring at the connection, it can only improve the sealing performance and still needs to rely on welding to achieve connection and fixation. It is still difficult to avoid the phenomenon of uneven heating during the welding process, which affects the production quality of battery products. Utility Model Content

[0003] In view of this, in order to improve at least one of the above problems existing in the prior art, the utility model provides a battery and an electrical device.

[0004] The first technical solution of the utility model provides a battery including: a battery shell, including a first shell and a cover member, the cover member is connected to the open end of the first shell to form a accommodating cavity; a battery cell is arranged in the accommodating cavity; wherein, a first connecting structure is provided on the end surface of the side wall of the first shell facing the cover member, and a second connecting structure is provided on the side of the cover member facing the first shell, and of the first connecting structure and the second connecting structure, one is a groove structure and the other is a protrusion structure; the protrusion structure is snap-fitted with the groove structure, and the protrusion structure and the groove structure are bonded and fixed by an adhesive layer.

[0005] In a feasible implementation, the cover member is a battery top cover, the accommodating cavity is located in the first shell, and the battery top cover covers the accommodating cavity.

[0006] In a feasible implementation, the protrusion structure includes a first protrusion, which is arranged on the wall surface of the battery top cover facing the first shell side; the groove structure includes a first groove, which is arranged on the inner side or outer side of the side wall of the first shell, and the first groove is a through structure in the direction toward the battery top cover; wherein, at least part of the first protrusion extends into the first groove, and an adhesive layer is provided between the side wall of the first protrusion and the side wall of the first groove.

[0007] In a feasible implementation, the groove structure includes a second groove; the protrusion structure includes a second protrusion; wherein, of the second groove and the second protrusion, one is arranged on the wall surface of the battery top cover facing the first shell, and the other is arranged on the end surface of the side wall of the first shell facing the battery top cover; the second protrusion extends into the second groove, and an adhesive layer is arranged between the side wall of the second protrusion and the side wall of the second groove.

[0008] In a feasible implementation, the second protrusion extends along the circumference of the first shell and is connected end to end; the extension direction of the second groove is consistent with the second protrusion, and is connected end to end in the circumference of the battery top cover; or

[0009] There are multiple second protrusions, and the multiple second protrusions are spaced apart in the circumferential direction of the first shell; the number of second grooves is the same as the number of second protrusions, and are respectively arranged corresponding to the multiple second protrusions, and each second protrusion extends into a corresponding second groove.

[0010] In a feasible implementation, the protrusion structure includes a third protrusion, which is arranged on the wall surface of the side wall of the first shell facing the battery top cover and is located near the outer edge of the side wall; the groove structure includes a third groove, which is arranged on the wall surface of the battery top cover facing the first shell, the third groove is recessed in a direction away from the first shell, and the third groove extends laterally to the outer edge of the battery top cover; wherein, at least part of the third protrusion extends into the third groove, and an adhesive layer is provided between the side wall of the third protrusion and the side wall of the third groove.

[0011] In a feasible implementation, the height dimension of the protrusion structure is equal to the depth dimension of the groove structure, and both are within the range of 1 / 2 to 2 / 3 of the thickness dimension of the battery top cover.

[0012] In a feasible implementation, a first chamber is provided in the first shell; the cover member is a second shell, a second chamber is provided in the second shell, and the second chamber is communicated with the first chamber to form a accommodating chamber.

[0013] In a feasible implementation, the battery further includes a seal, which is disposed between the side walls opposite to the protrusion structure and the groove structure; and / or the side wall of the groove structure and / or the side wall of the protrusion structure is an uneven structure.

[0014] In the second technical solution of the utility model, there is also provided an electrical device, comprising: a battery in any one of the above-mentioned first aspects.

[0015] The beneficial effects of the above technical solution of the utility model are embodied in:

[0016] The connection and fixation between the first shell and the cover member is achieved through the snap-fitting cooperation between the groove structure and the protruding structure and the adhesive effect of the adhesive layer, replacing the welding method in the prior art. This can avoid deformation of the shell due to uneven heating caused by welding, thereby preventing bubbles from being generated after the subsequent coating of the insulating film, which affects the appearance of the product. In addition, the connection method is simpler, which is conducive to reducing manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shown is a cross-sectional view of a battery provided by an embodiment of the utility model.

[0018] Figure 2 Shown is a cross-sectional view of yet another battery provided by an embodiment of the utility model.

[0019] Figure 3 Shown is a cross-sectional view of yet another battery provided by an embodiment of the utility model.

[0020] Figure 4 Shown is a cross-sectional view of a partial structure of another battery provided by an embodiment of the utility model.

[0021] Figure 5 Shown is a cross-sectional view of a partial structure of another battery provided by an embodiment of the utility model.

[0022] Figure 6 Shown is a cross-sectional view of a partial structure of another battery provided by an embodiment of the utility model.

[0023] Figure 7 Shown is a cross-sectional view of a partial structure of another battery provided by an embodiment of the utility model.

[0024] Figure 8 Shown is a cross-sectional view of a partial structure of another battery provided by an embodiment of the utility model.

[0025] Fig. 9 Shown is a cross-sectional view of a partial structure of another battery provided by an embodiment of the utility model.

[0026] Fig.10 Shown is a cross-sectional view of a battery casing before assembly provided by one embodiment of the utility model.

[0027] Fig.11 Shown is a cross-sectional view of another battery casing before assembly provided by an embodiment of the utility model.

[0028] Description of reference numerals:

[0029] 1 battery shell, 11 first shell, 12 cover member, 121 battery top cover, 122 second shell, 13 accommodating cavity, 14 groove structure, 141 first groove, 142 second groove, 143 third groove, 15 protrusion structure, 151 first protrusion, 152 second protrusion, 153 third protrusion, 16 adhesive layer, 17 sealing member; 2 battery cell. DETAILED DESCRIPTION

[0030] In the description of the application, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise clearly and specifically limited. In the embodiment of the present application, all directional indications (such as up, down, left, right, front, back, top, bottom ...) are only used to explain the relative position relationship, motion conditions, etc. between the components under a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their deformations are intended to cover non-exclusive inclusions. For example, the process, method, system, product or equipment comprising a series of steps or units are not limited to the steps or units listed, but optionally also include the steps or units not listed, or optionally also include other steps or units inherent to these processes, methods, products or equipment.

[0031] In addition, the reference to "embodiment" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0032] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0033] Some embodiments of the battery and electrical equipment in the technical solution of the utility model are provided below.

[0034] In one embodiment of the first aspect of the present invention, a battery is provided, such as Figure 1 As shown, the battery housing 1 and the battery cell 2 are included. The battery housing 1 includes a first housing 11 and a cover 12. One side of the first housing 11 is provided with an opening (e.g. Figure 1The top opening of the first shell 11 shown in the figure is formed by the cover 12 and the cover 12 is connected to the open end of the first shell 11, so that a receiving cavity 13 is formed in the battery shell 1; the battery cell 2 is arranged in the receiving cavity 13 of the battery shell 1. Among them, a first connection structure is provided on the end surface of the side wall of the first shell 11 facing the cover 12, and a second connection structure is provided on the side of the cover 12 facing the first shell 11; one of the first connection structure and the second connection structure is a groove structure 14, and the other is a protrusion structure 15; during assembly, the protrusion structure 15 and the groove structure 14 form a snap fit, and the protrusion structure 15 and the groove structure 14 are bonded and fixed by an adhesive layer 16, so as to realize the connection and fixation between the first shell 11 and the cover 12.

[0035] by Figure 1 For example, a groove structure 14 is provided on the top surface of the side wall of the first shell 11, and a protrusion structure 15 is provided on the bottom surface of the cover member 12 at a position opposite to the groove structure 14. The protrusion structure 15 is snap-fitted with the groove structure 14, and the side wall of the protrusion structure 15 is bonded and fixed to the side wall of the groove structure 14 by an adhesive layer 16.

[0036] It should be noted that, in practical applications, a protrusion structure 15 can be provided on the top surface of the side wall of the first shell 11 according to assembly requirements, and a groove structure 14 can be provided on the bottom surface of the cover member 12 at a position opposite to the protrusion structure 15, which can also achieve snap-fitting. In addition, the protrusion structure 15 can be an integrally formed structure with the first shell 11 or the cover member 12, or a separate structure connected together through processing; the adhesive layer 16 uses a sealing glue.

[0037] The battery in this embodiment realizes the connection and fixation between the first shell and the cover member through the snap-fitting cooperation between the groove structure and the protrusion structure and the adhesive effect of the adhesive layer, replacing the welding method in the prior art, thereby avoiding deformation of the shell due to uneven heating caused by welding, thereby preventing the subsequent generation of bubbles after the insulating film is coated and affecting the appearance of the product. In addition, the connection method is simpler, which is conducive to reducing manufacturing costs.

[0038] It should be noted that the battery in this embodiment includes but is not limited to a lithium battery, and specifically can be a cylindrical battery, a square battery, or other battery types suitable for the connection method of this embodiment; in addition, during actual assembly, a second connection structure can be provided on one or more side walls of the first housing according to the specific shape of the battery housing, and the first connection structure of the cover member is adapted to the second connection structure. The situation in the following embodiments is the same.

[0039] In a further embodiment of the present invention, Figure 1 and Figure 2As shown, the cover member 12 of the battery housing 1 is a battery top cover 121. Correspondingly, the accommodating cavity 13 is located in the first housing 11. The top of the first housing 11 is provided with an opening to facilitate the installation of the battery cell 2. During assembly, the battery top cover 121 covers the top of the first housing 11 and covers the accommodating cavity 13 to keep the accommodating cavity 13 in a sealed state. At the same time, the battery top cover 121 is arranged on the top of the first housing 11 to facilitate assembly operations.

[0040] Furthermore, in a specific implementation, Figure 2 As shown, the groove structure 14 includes a first groove 141, and correspondingly, the protrusion structure 15 includes a first protrusion 151. Specifically, the first groove 141 is provided on the inner side or outer side of the side wall of the first shell 11, and the first groove 141 is a through structure in the direction toward the battery top cover 121, for example Figure 2 The first groove 141 shown in the figure is located at the outer side of the side wall, and the upper part of the first groove 141 is a through structure; correspondingly, the first protrusion 151 structure 15 is arranged at the bottom of the battery top cover 121 near the outer side, and is arranged opposite to the first groove 141. During assembly, at least part of the first protrusion 151 extends into the first groove 141, forming a snap fit with the first groove 141, and an adhesive layer 16 is provided between the side wall of the first protrusion 151 facing the inner side and the side wall of the first groove 141 facing the outer side, and the first groove 141 and the first protrusion 151 are bonded and fixed by the adhesiveness of the adhesive layer 16, so as to realize the connection and fixation between the first shell 11 and the battery top cover 121.

[0041] Furthermore, if Figure 3 As shown, a sealing member 17 is further provided between the side walls opposite to the first groove 141 and the first protrusion 151. Specifically, the sealing member 17 may be a sealing ring structure, which is sleeved on the outer side of the side wall of the first groove 141 to seal the gap between the first groove 141 and the first protrusion 151; Figure 4 In the example in FIG. 1 , the adhesive layer 16 can be specifically arranged on a side of the sealing member 17 facing the first protrusion 151, such as Figure 3 In the example in FIG. 1 , the adhesive layer 16 can also be arranged on the side of the seal 17 facing the side wall of the first groove 141, and can be arranged according to specific assembly requirements. The sealing performance of the battery housing 1 can be further improved by arranging the seal 17, and the side of the adhesive layer 16 close to the first groove 141 or the first protrusion 151 has metal affinity, and the side of the adhesive layer 16 close to the seal 17 has plastic affinity, which can further improve the connection reliability between the first housing 11 and the battery top cover 121. The situation in the following embodiments is the same.

[0042] In another specific implementation, Figure 5In the example, a first groove 141 is provided on the inner side of the top of the side wall of the first shell 11, and the top of the first groove 141 is through; correspondingly, a first protrusion 151 is provided at the bottom of the battery cover 121 opposite to the first groove 141. At least part of the first protrusion 151 extends into the first groove 141 to form a snap fit with the first groove 141; an adhesive layer 16 is provided between the first protrusion 151 and the side wall opposite to the first groove 141, and the first groove 141 and the first protrusion 151 are bonded together by the viscosity of the adhesive layer 16, so that the first shell 11 and the battery cover 121 are connected and fixed. Preferably, as Figure 5 In the example in FIG. 1 , a sealing member 17, such as a sealing ring, is further provided between the side walls opposite to the first protrusion 151 and the first groove 141 and is sleeved on the outer side of the first protrusion 151 to seal the gap between the first protrusion 151 and the first groove 141. The adhesive layer 16 may be as follows: Figure 5 In the state shown in FIG, it is arranged on the side of the sealing member 17 facing the first groove 141. Of course, it can also be arranged on the side of the sealing member 17 facing the first protrusion 151 according to assembly requirements.

[0043] In a further embodiment of the present invention, Figure 6 and Figure 7 As shown, in the battery housing 1, the groove structure 14 includes a second groove 142, and the protrusion structure 15 includes a second protrusion 152; of the second groove 142 and the second protrusion 152, one is arranged on the wall surface of the battery top cover 121 facing the first housing 11, and the other is arranged on the end surface of the side wall of the first housing 11 facing the battery top cover 121; when assembled, the second protrusion 152 extends into the second groove 142, and an adhesive layer 16 is arranged between the second protrusion 152 and the side wall opposite to the second groove 142.

[0044] Specifically, Figure 6 In the example, a second groove 142 is provided on the top surface of the side wall of the first shell 11, and a second protrusion 152 is provided at the bottom of the battery top cover 121 at a position opposite to the second groove 142; the second protrusion 152 extends downward into the second groove 142, and an adhesive layer 16 is provided between the inner side wall and / or the outer side wall of the second protrusion 152 and the side wall corresponding to the second groove 142, and the second protrusion 152 and the second groove 142 are glued together by the viscosity of the adhesive layer 16, thereby realizing the connection and fixation between the first shell 11 and the battery top cover 121.

[0045] like Figure 7In the example, a second protrusion 152 is provided on the top surface of the side wall of the first shell 11, and a second groove 142 is provided on the top of the battery top cover 121 at a position opposite to the second protrusion 152; the second protrusion 152 extends upward into the second groove 142, and an adhesive layer 16 is provided between the inner side wall and / or the outer side wall of the second protrusion 152 and the side wall corresponding to the second groove 142, for bonding the second protrusion 152 and the second groove 142.

[0046] Furthermore, if Figure 8 In the example, a sealing member 17 is further provided between the second protrusion 152 and the side wall opposite to the second groove 142. Preferably, a sealing member 17 is provided between the inner side wall of the second protrusion 152 and the side wall opposite to the second groove 142, and an adhesive layer 16 is provided between the outer side wall of the second protrusion 152 and the side wall opposite to the second groove 142, so that the sealing member 17 and the adhesive layer 16 are respectively located on the inner and outer sides of the second protrusion 152, which can further improve the bonding strength and sealing performance.

[0047] It should be noted that, in practical applications, the seal 17 and the adhesive layer 16 may be interchanged according to assembly, or the adhesive layer 16 and the seal 17 may be provided on both the inner and outer sides of the second protrusion 152 .

[0048] Furthermore, in a specific implementation, the second protrusion 152 is a continuous structure, and the second protrusion 152 extends along the circumference of the first shell 11 and forms a terminal connection state. The extension direction of the second groove 142 is consistent with the second protrusion 152, and the battery top cover 121 is terminally connected in the circumferential direction to match the second protrusion 152. During assembly, the second protrusion 152 is integrally inserted into the second groove 142 and is bonded and fixed by the adhesive layer 16, so that the first shell 11 and the battery top cover 121 form a continuous connection in the circumferential direction, which can balance the force and optimize the connection strength on the one hand, and further improve the sealing performance on the other hand.

[0049] In another specific implementation, the number of the second protrusions 152 is multiple, and the multiple second protrusions 152 are arranged at intervals in the circumferential direction of the first shell 11 to form an intermittent arrangement; the number of the second grooves 142 is the same as the number of the second protrusions 152, and they are respectively arranged corresponding to the multiple second protrusions 152, that is, each second groove 142 is arranged corresponding to one of the second protrusions 152, and the multiple second grooves 142 are arranged at intervals in the circumferential direction of the battery top cover 121. During assembly, each second protrusion 152 extends into a corresponding second groove 142 and is bonded and fixed by the adhesive layer 16, so that the first shell 11 and the battery top cover 121 are connected in an interval manner in the circumferential direction. Specifically, they can be arranged according to the force conditions to meet the requirements of connection strength, sealing, etc. Preferably, a seal 17 can also be provided between the side walls opposite to the second protrusion 152 and the second groove 142.

[0050] It should be noted that the above two specific implementations are also applicable to the case where the second protrusion 152 is arranged at the bottom of the battery top cover 121 and the second groove 142 is arranged on the side wall of the first shell 11. The assembly method is similar to the above case and will not be repeated here.

[0051] In a further embodiment of the present invention, Fig. 9 and Fig.10 As shown, in the battery housing 1, the protrusion structure 15 includes a third protrusion 153, and the groove structure 14 includes a third groove 143. The side wall of the first housing 11 facing the battery top cover 121 is provided with a third protrusion 153, for example Fig. 9 and Fig.10 The top surface of the side wall of the battery housing 1 shown in FIG. 1 is provided with a third protrusion 153, and the third protrusion 153 is located near the outer edge of the side wall; the side of the battery top cover 121 facing the first housing 11 is provided with a third groove 143 corresponding to the third protrusion 153, for example Fig. 9 and Fig.10 The bottom surface of the battery cover 121 shown in the figure is provided with a third groove 143, and the third groove 143 extends to the outer edge of the battery cover 121 in the transverse direction; during assembly, the third protrusion 153 extends into the corresponding third groove 143 and forms a snap fit, and an adhesive layer 16 is provided between the third protrusion 153 and the side wall opposite to the third groove 143, and the third protrusion 153 and the third groove 143 are bonded together by the adhesiveness of the adhesive layer 16, so as to realize the connection and fixation between the first shell 11 and the battery cover 121. Preferably, a sealing member 17 is provided between the side wall opposite to the third protrusion 153 and the third groove 143, for sealing the gap between the third protrusion 153 and the third groove 143; the sealing member 17 can be specifically provided on the side of the adhesive layer 16 facing the third protrusion 153 or on the side of the adhesive layer 16 facing the third groove 143.

[0052] Furthermore, in a specific implementation, Figures 2 to 9 As shown, the height dimension of the protrusion structure 15 is equal to the depth dimension of the groove structure 14. When the battery top cover 121 is covered on the first shell 11, the protrusion structure 15 extends into the corresponding groove structure 14, and in the height direction, the protrusion structure 15 and the groove structure 14 can abut against each other, thereby avoiding the appearance of a gap, thereby further improving the sealing performance and further facilitating the force conduction. Among them, the height dimension of the protrusion structure 15 and the depth dimension of the groove structure 14 are both within the range of 1 / 2 to 2 / 3 of the thickness dimension of the battery top cover 121 to meet the assembly connection requirements and strength requirements.

[0053] It should be noted that, in practical applications, the height dimension of the protruding structure 15 can also be set to be slightly smaller than the depth dimension of the groove structure 14 according to assembly requirements, for example, the height dimension of the protruding structure 15 is set to be within the range of 3 / 5 to 4 / 5 of the depth dimension of the groove structure 14. After assembly, there is a certain gap between the protruding structure 15 and the groove structure 14 in the height direction, which can provide expansion space for the adhesive layer 16, so that part of the adhesive liquid of the adhesive layer 16 can enter the gap.

[0054] For example, in a specific embodiment, a 4 mm high protrusion structure 15 is provided at the bottom of the battery top cover 121, and glue is applied on the protrusion. A 5 mm high groove structure 14 is provided on the top surface of the side wall of the first shell 11, and glue can also be applied on the groove structure 14. Then, the protrusion structure 15 of the battery top cover 121 is embedded in the groove structure 14 of the first shell 11. The glue layer is expanded and cured by heating so that the first shell 11 and the battery top cover 121 are adhered and sealed together.

[0055] In a further embodiment of the present invention, Fig.11 As shown, the first shell 11 is provided with a first chamber inside, and correspondingly, the cover member 12 is specifically a second shell 122, and the second shell 122 is provided with a second chamber inside; when assembled, the second shell 122 is connected to the first shell 11, and the first chamber is communicated with the second chamber to form the accommodating chamber 13 of the battery shell 1. The battery cell 2 is arranged in the accommodating chamber 13, so that part of the structure of the battery cell 2 is located in the area of ​​the first chamber, and part of the structure is located in the area of ​​the second chamber. Among them, the groove structure 14 and the protrusion structure 15 in the above-mentioned embodiment can also be arranged on the wall surface of the side wall of the second shell 122 opposite to the side wall of the first shell 11 to achieve mutual snap-fitting, and are bonded together by the adhesive layer 16 to achieve the connection and fixation between the first shell 11 and the second shell 122; in addition, a sealing member 17 can also be arranged between the side walls opposite to the groove structure 14 and the protrusion structure 15 to improve the sealing performance.

[0056] The battery shell 1 is formed by combining the first shell 11 and the second shell 122, which can provide another implementation method for battery assembly without the battery top cover 121, wherein the first shell 11 and the second shell 122 can be insulated from each other by the adhesive layer 16 and the seal 17. After assembly, the first shell 11 and the second shell 122 can carry different polarities of electricity, respectively, and serve as the positive and negative electrodes of the battery.

[0057] In a further embodiment of the present invention, the side wall of the groove structure 14 and / or the side wall of the protrusion structure 15 adopts an uneven structure, that is, the side wall surface of the groove structure 14 and the protrusion structure 15 is set to a curved surface, such as a wavy or sawtooth curved surface, which can increase the contact area between the glue of the adhesive layer 16 and the groove structure 14 and the protrusion structure 15, and can further improve the bonding strength. When the first shell 11 and the cover member 12 are aligned, the protrusion structure 15 and the groove structure 14 are squeezed against each other to produce a riveting effect, which can further improve the connection strength and reliability. Of course, according to different specific assembly requirements, the uneven structure can also be set only on the side wall surface of the groove structure 14 or only on the side wall surface of the protrusion structure 15.

[0058] It should also be noted that the battery housing 1 in the present invention is not limited to Figures 1 to 9 The square housing shown in Fig.10 and Fig.11 The cylindrical housing shown in FIG.

[0059] In practical applications, the adhesive layer 16 can be specifically made of polypropylene, grafted modified polypropylene and polyethylene terephthalate powder mixed in a weight ratio of 1: (1 to 4): 1 to obtain a mixture, and then the mixture is added to deionized water according to a solid-liquid ratio (1g: 40 to 100ml), and stirred to form a uniformly mixed polymer slurry with sealing properties.

[0060] by Figure 2 and Figure 3 Taking the battery shown in as an example, during assembly, the battery cell 2 is loaded into the first shell 11, and the battery top cover 121 is buckled on the open end of the first shell 11 to assemble the battery; the battery is clamped with a clamp so that the sealing ring is in a compressed state; then the battery is heated at a temperature of 140°C to 160°C (for example, 150°C) to solidify the glue layer at the connection between the battery top cover 121 and the first shell 11, and then the battery is cooled at a temperature of 10°C to 25°C (for example, 15°C).

[0061] In the above process, under the pressure of the clamp, the battery top cover 121 and the first shell 11 are squeezed against each other, and the sealing ring is compressed along the thickness direction of the battery top cover 121. At this time, the sealing ring extends in a direction perpendicular to the thickness direction of the battery top cover 121, thereby squeezing the adhesive layer 16, so that the adhesive layer 16, the sealing ring and the connection between the battery top cover 121 and the first shell 11 are in a tightly pressed state. On this basis, the battery is heated to solidify the adhesive layer 16, so that the above three are always in a tightly compressed state to ensure the fixed connection effect of the battery top cover 121 and the first shell 11.

[0062] It should be noted that when the adhesive layer 16 is applied, the glue is in an initial state and has no adhesive force. When heated, it will generate very strong adhesive force, thereby bonding the top cover and the shell together, and once the glue is solidified, it will no longer melt.

[0063] By bonding the battery top cover 121 and the first shell 11 together through the technical solution of the utility model, the phenomenon of uneven heating and deformation of the shell caused by welding can be effectively avoided. The main reasons are: on the one hand, the heating and curing temperature of the glue of the adhesive layer 16 is much lower than the welding temperature (generally greater than 300°C); on the other hand, during the welding operation, the welding head moves on the welding path, and different positions of the battery top cover 121 are heated to different temperatures. The temperature is high at the position close to the welding area, and the temperature is low at the position far from the welding area. It is difficult to avoid the phenomenon of uneven heating. The technical solution of the utility model is to place the entire battery in a heating environment for heating, so that different positions on the battery top cover 121 are heated more evenly.

[0064] In an embodiment of the second aspect of the present invention, an electric device is provided, comprising the battery in any embodiment of the first aspect, so as to supply power to the electric device through the battery. By adopting the battery, it is not necessary to weld the battery housing 1 during assembly, and deformation of the battery housing 1 due to uneven heating can be effectively prevented.

[0065] In addition, the electrical equipment in this embodiment also has all the beneficial effects of the battery in any embodiment of the first aspect mentioned above, which will not be repeated here.

[0066] The basic principle of the present invention is described above in conjunction with specific embodiments. However, it should be pointed out that the advantages, strengths, effects, etc. mentioned in the present invention are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present invention. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not limitation, and the above details do not limit the present invention to being implemented by adopting the above specific details.

[0067] The block diagrams of the devices, apparatuses, equipment and systems involved in the present utility model are only illustrative examples and are not intended to require or imply that they must be connected, arranged and configured in the manner shown in the block diagrams. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment and systems can be connected, arranged and configured in any manner. Words such as "including", "comprising", "having" and the like are open words, referring to "including but not limited to" and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them unless the context clearly indicates otherwise. The words "such as" used here refer to the phrase "such as but not limited to" and can be used interchangeably with them. It should also be noted that in the apparatus and equipment of the present utility model, each component can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent schemes of the present utility model.

[0068] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize some variations, modifications, changes, additions and sub-combinations thereof. The above description of the disclosed aspects is provided to enable any technician in the field to make or use the utility model. Various modifications to these aspects are very obvious to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of the utility model. Therefore, the utility model is not intended to be limited to the aspects shown herein, but in accordance with the widest range consistent with the principles and novel features of this utility model.

[0069] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery, characterized in that: include: A battery housing (1) comprises a first housing (11) and a cover member (12), wherein the cover member (12) is connected to an opening end of the first housing (11) to form a receiving cavity (13); A battery cell (2) is arranged in the accommodating cavity (13); A first connection structure is provided on the end surface of the side wall of the first shell (11) facing the cover member (12), and a second connection structure is provided on the side of the cover member (12) facing the first shell (11), and one of the first connection structure and the second connection structure is a groove structure (14) and the other is a protrusion structure (15); The protruding structure (15) is snap-fitted with the groove structure (14), and the protruding structure (15) and the groove structure (14) are bonded and fixed via an adhesive layer (16); the glue of the adhesive layer (16) is heated and cured at a temperature lower than the welding temperature.

2. The battery according to claim 1, characterized in that The cover member (12) is a battery top cover (121), the accommodating cavity (13) is located in the first shell (11), and the battery top cover (121) covers the accommodating cavity (13).

3. The battery according to claim 2, characterized in that The protrusion structure (15) comprises a first protrusion (151), and the first protrusion (151) is arranged on a wall surface of the battery top cover (121) facing the first shell (11); The groove structure (14) comprises a first groove (141), the first groove (141) being arranged on the inner side or the outer side of the side wall of the first shell (11), and the first groove (141) being a through structure in a direction toward the battery top cover (121); Wherein, at least a portion of the first protrusion (151) extends into the first groove (141), and the adhesive layer (16) is provided between the side wall of the first protrusion (151) and the side wall of the first groove (141).

4. The battery according to claim 2, characterized in that The groove structure (14) comprises a second groove (142); The protrusion structure (15) comprises a second protrusion (152); Among them, one of the second groove (142) and the second protrusion (152) is arranged on the wall surface of the battery top cover (121) facing the first shell (11), and the other is arranged on the end surface of the side wall of the first shell (11) facing the battery top cover (121); The second protrusion (152) extends into the second groove (142), and the adhesive layer (16) is provided between the side wall of the second protrusion (152) and the side wall of the second groove (142).

5. The battery according to claim 4, characterized in that The second protrusion (152) extends along the circumference of the first shell (11) and is connected end to end; The second groove (142) extends in the same direction as the second protrusion (152), and is connected end to end in the circumferential direction of the battery top cover (121); or The number of the second protrusions (152) is plural, and the plurality of second protrusions (152) are arranged at intervals in the circumferential direction of the first shell (11); The number of the second grooves (142) is the same as the number of the second protrusions (152), and they are respectively arranged corresponding to a plurality of the second protrusions (152), and each second protrusion (152) extends into a corresponding second groove (142).

6. The battery according to claim 2, characterized in that The protrusion structure (15) comprises a third protrusion (153), and the third protrusion (153) is arranged on the wall surface of the side wall of the first shell (11) facing the battery top cover (121) and is located close to the outer edge of the side wall; The groove structure (14) comprises a third groove (143), the third groove (143) being arranged on a wall surface of the battery top cover (121) facing the first shell (11), the third groove (143) being recessed in a direction away from the first shell (11), and the third groove (143) extending in a transverse direction to an outer edge of the battery top cover (121); Wherein, at least a portion of the third protrusion (153) extends into the third groove (143), and the adhesive layer (16) is provided between the side wall of the third protrusion (153) and the side wall of the third groove (143).

7. The battery according to claim 2, characterized in that The height dimension of the protruding structure (15) is equal to the depth dimension of the groove structure (14), and both are within the range of 1 / 2 to 2 / 3 of the thickness dimension of the battery top cover (121).

8. The battery according to claim 1, characterized in that A first chamber is provided in the first shell (11); The cover member (12) is a second shell (122), a second chamber is provided in the second shell (122), and the second chamber is communicated with the first chamber to form the accommodating chamber (13).

9. The battery according to any one of claims 1 to 8, characterized in that The battery further comprises a sealing member (17), wherein the sealing member (17) is arranged between the convex structure (15) and the side walls opposite to the concave structure (14); and / or The side wall of the groove structure (14) and / or the side wall of the protrusion structure (15) are uneven structures.

10. An electrical device, characterized in that: include: A battery as claimed in any one of claims 1 to 9.

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