Battery and electric equipment

Abstract

The utility model discloses a battery and electric equipment. The battery comprises a battery cell and a fixing assembly for fixing the battery cell, wherein the fixing assembly comprises a first fixing piece, a second fixing piece, a first supporting piece and a second supporting piece. And the first fixing piece and the second fixing piece are respectively arranged on two sides of the battery cell in the width direction. The first supporting piece and the second supporting piece are arranged on the two sides of the battery cell in the thickness direction respectively, the two ends of the first supporting piece are connected to the first fixing piece and the second fixing piece respectively, and the two ends of the second supporting piece are connected to the first fixing piece and the second fixing piece respectively. The battery provided by the utility model can effectively solve the problem of lithium precipitation at corners caused by loose battery cells in the circulation process of the battery.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of battery, concretely relates to battery and electric equipment. BACKGROUND

[0002] In the current lithium ion battery manufacturing technology, the soft package lithium ion battery is a kind of lithium ion battery with aluminum plastic film as the winding core packaging material. After winding into the shape, the battery will usually be glued at the head and tail of the core to be fixed, and then the core is put into the aluminum plastic film for packaging to ensure the integrity and safety of its structure.

[0003] In the related art, with the battery through the charge-discharge cycle for many times, the pole piece in the core will swell due to the embedding and de-embedding of lithium ions, resulting in the thickening of the pole piece. Since the adhesive paper is only pasted at the head and tail of the core, that is, the half circle around the core is glued and fixed, when swelling occurs, the fixing effect of the adhesive paper will gradually weaken, so that the originally tightly wound core gradually loosens from the outer layer. With the loosening of the core, the outer layer of the battery is more prone to lithium precipitation, especially in the corner area of the battery, due to the structural weakness, the corner lithium precipitation is more likely to occur. These phenomena not only greatly reduce the service life of the battery, but also may cause internal short circuit due to the deposition of lithium metal, increasing the safety risk of battery thermal runaway and fire. SUMMARY

[0004] The utility model aims at at least one of the technical problems existing in the prior art. To this end, the utility model provides a battery, which can effectively solve the problem of corner lithium precipitation caused by core loosening during the cycle process.

[0005] The utility model further provides an electric device.

[0006] The battery according to the embodiment of the first aspect of the utility model comprises a core and a fixing assembly for fixing the core, and the fixing assembly comprises:

[0007] A first fixing member;

[0008] A second fixing member, the first fixing member and the second fixing member are respectively arranged on both sides of the core in the width direction;

[0009] A first supporting member;

[0010] A second supporting member, the first supporting member and the second supporting member are respectively arranged on both sides of the core in the thickness direction, both ends of the first supporting member are respectively connected to the first fixing member and the second fixing member, and both ends of the second supporting member are respectively connected to the first fixing member and the second fixing member.

[0011] The battery has at least the following beneficial effects: the problem of corner lithium precipitation caused by the loose battery cell during the cycle process is effectively solved.

[0012] According to some embodiments of the present application, the first fixing part comprises a first fixing portion and a second fixing portion, and the first fixing portion and the second fixing portion are fixedly connected with each other.

[0013] According to some embodiments of the present application, the first fixing portion is provided with a protrusion, and the second fixing portion is provided with a groove, and the protrusion is accommodated in the groove.

[0014] Alternatively,

[0015] The first fixing portion is provided with a groove, and the second fixing portion is provided with a protrusion, and the protrusion is accommodated in the groove.

[0016] The first fixing portion and the second fixing portion are fixedly connected with each other through the protrusion and the groove.

[0017] According to some embodiments of the present application, a connecting piece is further included, and the first fixing portion and the second fixing portion are fixedly connected with each other through the connecting piece.

[0018] Among them, the first fixing portion and the second fixing portion are both provided with a groove, and both ends of the connecting piece are provided with a protrusion, and the protrusion is accommodated in the groove.

[0019] Alternatively,

[0020] The first fixing portion and the second fixing portion are both provided with a protrusion, and both ends of the connecting piece are provided with a groove, and the protrusion is accommodated in the groove.

[0021] According to some embodiments of the present application, the first support is provided in plurality, the second support is provided in plurality, the plurality of first supports are arranged in intervals along the length direction of the battery cell, and the plurality of second supports are arranged along the length direction of the battery cell.

[0022] According to some embodiments of the present application, the thickness of the first fixing member, the second fixing member, the first support and the second support is L, and 0.2mm≤L≤10mm.

[0023] According to some embodiments of the present application, the first fixing member and the second fixing member are provided with grooves, and the first support and the second support are provided with protrusions, the protrusions being accommodated in the grooves.

[0024] Alternatively, the first fixing member and the second fixing member are provided with protrusions, and the first support and the second support are provided with grooves, the protrusions being accommodated in the grooves.

[0025] Alternatively, the first fixing member and the second fixing member are provided with protrusions, and the first support and the second support are provided with grooves, the protrusions being accommodated in the grooves.

[0026] According to some embodiments of the present application, the first fixing member, the second fixing member, the first support and the second support are provided with an inner surface close to the battery cell and an outer surface away from the battery cell, the grooves have opposite first edges and second edges along the thickness direction of the battery cell, the distance between the first edges and the inner surface and the distance between the second edges and the outer surface are both W, and 0.1mm≤W≤1mm.

[0027] According to some embodiments of the present application, the material of the first fixing member and the second fixing member is thermosetting plastic.

[0028] According to the power utilization device of the second aspect of the present application, the battery cell is as described in any one of the above.

[0029] According to the power equipment of the second aspect of the utility model, at least have following beneficial effect: through first fixed part, second fixed part and connecting first fixed part and second fixed part's first support piece and second support piece form the fixed structure around the outer circumferential surface of battery cell, to around and fix battery cell in the thickness direction of battery cell and the width direction of battery cell simultaneously.Compared with the related art adopts the half circle of battery cell to paste glue fixedly, the fixed assembly of the application can fix around the whole of battery cell, when the battery increases along with the charge and discharge cycle number, the fixed effect of the fixed structure of the application will not weaken when the pole piece swells and thickens, the winding core is not easy to gradually loosen from outside to inside, is not easy to cause the corner lithium precipitation and corner lithium precipitation, can improve the service life of battery and the use safety of battery.Therefore, the power equipment including above-mentioned battery can also effectively solve the problem that the corner lithium precipitation is caused by the looseness of battery cell, and further improve the service life and use safety of power equipment.

[0030] Additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0031] The utility model will be further explained in connection with the drawings and examples, in which:

[0032] Figure 1 It is the structural schematic diagram of battery of the first embodiment of the utility model;

[0033] Figure 2 It is the top view of battery of the utility model;

[0034] Figure 3 It is the structural schematic diagram of battery of the second embodiment of the utility model;

[0035] Figure 4 It is the top view of battery of Figure 3 ;

[0036] Figure 5 It is the top view of battery of the third embodiment of the utility model;

[0037] Figure 6 It is the front view of the first fixed part of the utility model;

[0038] Figure 7 It is the enlarged view of A in Figure 6 ;

[0039] REFERENCE NUMERALS:

[0040] Battery cell 10; fixing assembly 20; first fixing member 100; first fixing part 110; second fixing part 120; connecting member 130; groove 140; protrusion 150; third fixing part 160; fourth fixing part 170; inner surface 101; outer surface 102; first edge 103; second edge 104; second fixing member 200; first supporting member 300; second supporting member 400. DETAILED DESCRIPTION

[0041] Embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are for the purpose of explaining the present application, and should not be understood as a limitation of the present application.

[0042] In the description of the present application, it should be understood that, if the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation of the present application.

[0043] In the description of the present application, the meaning of several is more than one, the meaning of multiple is more than two, greater than, less than, more than and the like are understood as not including the number, above, below, within and the like are understood as including the number. If the first, second is described, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0044] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting and the like should be understood in a broad sense, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0045] In the description of the present application, the description of the reference terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0046] In the field of lithium-ion battery production, soft-pack lithium-ion batteries are a type of lithium-ion battery that uses aluminum plastic film as the core packaging material. After the winding process is completed, the battery is packaged in an aluminum plastic film to ensure its structural stability and safety in use.

[0047] However, during the long-term use of the battery, especially during repeated charge and discharge cycles, the electrode sheets inside the battery cell will expand due to the insertion and extraction of lithium ions, causing an increase in the thickness of the electrode sheets. This expansion weakens the fixing effect of the adhesive paper originally used to fix the battery cell, causing the winding structure to gradually lose its tightness from the outer layer to the inner layer, becoming loose. This loose state of the battery cell makes it easier for lithium to be precipitated from the outer layer, especially at the corners of the battery, where structural defects make it more prone to lithium precipitation. These conditions not only significantly shorten the service life of the battery, but also increase the risk of internal short circuits and even fires due to the deposition of lithium.

[0048] Therefore, in order to improve the performance and safety of soft-pack lithium-ion batteries, a more effective fixing technology is needed to adapt to the volume changes of the battery during long-term use, ensuring the stability and reliability of the battery, and thus improving the durability and safety of the battery.

[0049] Based on the above problems, the present application proposes a battery which aims to solve the problems existing in the related art to some extent.

[0050] Reference Figure 1 , Figure 2 According to the battery of the present application, the first fixing member 100 and the second fixing member 200 are respectively arranged on both sides of the width direction of the battery cell 10. The first support member 300 and the second support member 400 are respectively arranged on both sides of the thickness direction of the battery cell 10, and the two ends of the first support member 300 are respectively connected to the first fixing member 100 and the second fixing member 200. The two ends of the second support member 400 are respectively connected to the first fixing member 100 and the second fixing member 200, and the first fixing member 100, the second fixing member 200, the first support member 300 and the second support member 400 jointly form a fixing structure to fix the battery cell 10.

[0051] According to the battery of the present application, the first fixing member 100 and the second fixing member 200 are respectively arranged on both sides of the width direction of the battery cell 10. The first support member 300 and the second support member 400 are respectively arranged on both sides of the thickness direction of the battery cell 10, and the two ends of the first support member 300 are respectively connected to the first fixing member 100 and the second fixing member 200. The two ends of the second support member 400 are respectively connected to the first fixing member 100 and the second fixing member 200, and the first fixing member 100, the second fixing member 200, the first support member 300 and the second support member 400 jointly form a fixing structure to fix the battery cell 10.

[0052] Specifically, the first fixing member 100 and the second fixing member 200 are arranged outside the width direction of the battery cell 10 to surround and fix the battery cell 10 in the width direction. Meanwhile, the battery of the present application is further provided with a first supporting member 300 and a second supporting member 400, the first supporting member 300 is connected to one end of the first fixing member 100 and the second fixing member 200, and the second supporting member 400 is connected to the other end of the first fixing member 100 and the second fixing member 200. Thus, the first fixing member 100, the second fixing member 200, the first supporting member 300 and the second supporting member 400 form a fixing structure surrounding the outer surface of the battery cell 10 to simultaneously surround and fix the battery cell 10 in the thickness direction and the width direction of the battery cell 10. Compared with the related art which uses adhesive tape to fix the battery cell 10 after winding, when the battery is used for a long time, the fixing effect of the fixing structure of the present application will not be weakened, the battery cell 10 will not be gradually loosened from the outside to the inside, and the battery cell 10 will not be prone to lithium precipitation on the outer layer and at the corner, thereby improving the service life of the battery and the safety of the battery.

[0053] In the present application, the first fixing member 100 and the second fixing member 200 are preferably circular arc-shaped to closely fit the circular arc outer periphery of the battery cell 10 and provide more stable fixing effect for the battery cell 10. Further, in order to increase the fixing strength, the battery of the present application is further provided with a first supporting member 300 and a second supporting member 400 which are linear, the first fixing member 100 and the second fixing member 200 are each half circular arc-shaped and each have two ends, one end of the first supporting member 300 is connected to one end of the first fixing member 100, the other end of the second supporting member 400 is connected to one end of the second fixing member 200 on the same side as the first fixing member 100, and the second supporting member 400 is connected to the two ends on the same side of the first fixing member 100 and the second fixing member 200.

[0054] Thus, the first fixing member 100, the second fixing member 200, the first supporting member 300 and the second supporting member 400 form a fixing structure surrounding the outer periphery of the battery cell 10 to fix the battery cell 10 in the width and thickness directions of the battery cell 10. When the battery is used for a long time and the electrode plate inside the battery expands and thickens, the fixing structure formed between the first fixing member 100, the second fixing member 200, the first supporting member 300 and the second supporting member 400 still has high structural stability and maintains stable fixing effect. Compared with the related art which uses adhesive tape to fix the battery cell 10, the technology of the present application which uses the above fixing assembly 20 to fix the battery cell 10 can prevent the battery cell 10 from being gradually loosened from the outside to the inside, prevent lithium precipitation on the outer layer and at the corner, and further improve the service life of the battery and the safety of the battery.

[0055] It should be noted that in the present application, the first fixing member 100, the second fixing member 200, the first supporting member 300 and the second supporting member 400 are preferably in a detachable structure to facilitate production and installation. However, according to the needs, the components in the present application can also be integrally formed in pairs or integrally formed as a whole, which can be selected according to the actual situation, and no specific limitation is made here.

[0056] With reference to Figure 3 According to some embodiments of the present application, the first fixing member 100 includes a first fixing portion 110 and a second fixing portion 120, and the first fixing portion 110 and the second fixing portion 120 are connected and fixed to each other. As described above, the first fixing member 100 is arranged on one side of the width direction of the battery cell 10, and the second fixing member 200 is arranged on the other side of the width direction of the battery cell 10. However, when actually installed and fixed, the first fixing member 100 and the second fixing member 200 in the form of a semicircular arc have a large arc, and their adaptability to the battery cell 10 is not high, and they cannot adapt to battery cells 10 of various models. Therefore, when different types of battery cells 10 need to be adapted, the first fixing member 100 can include a first fixing portion 110 and a second fixing portion 120, and the second fixing member 200 can include a third fixing portion 160 and a fourth fixing portion 170. The first fixing portion 110 and the second fixing portion 120, and the third fixing portion 160 and the fourth fixing portion 170 can be connected and fixed to each other.

[0057] By arranging the first fixing member 100 in the form of a first fixing portion 110 and a second fixing portion 120, on the one hand, the structure in the form of a quarter arc can facilitate processing compared to the structure in the form of a half arc, and on the other hand, it can also increase its adaptability and be applicable to battery cells 10 of various models and different edge radii.

[0058] The connection and fixing method between the first fixing portion 110 and the second fixing portion 120 can include various methods, such as riveting, biting, meshing, pinning, or buckling connection, as long as the first fixing portion 110 and the second fixing portion 120 can be connected and fixed to form a whole structure, and no specific limitation is made here.

[0059] With reference to Figure 4According to some embodiments of the utility model, the first fixed part 110 is provided with a protrusion 150, the second fixed part 120 is provided with a groove 140, and the protrusion 150 is accommodated in the groove 140. Alternatively, the first fixed part 110 is provided with a groove 140, the second fixed part 120 is provided with a protrusion 150, and the protrusion 150 is accommodated in the groove 140. The first fixed part 110 and the second fixed part 120 are fixed by abutting each other through the protrusion 150 and the groove 140. In this application, as an example, the connection and fixing mode between the first fixed part 110 and the second fixed part 120 preferably adopts the mode of occlusal connection. Specifically, the protrusion 150 can be arranged on the first fixed part 110, the groove 140 can be arranged on the second fixed part 120, the protrusion 150 of the first fixed part 110 is inserted into the groove 140 of the second fixed part 120, so as to realize seamless connection between the first fixed part 110 and the second fixed part 120, that is, after the first fixed part 110 and the second fixed part 120 are installed in cooperation, the first fixed part 110 and the second fixed part 120 abut each other without gap, so that the stability and firmness of the fixing part are further strengthened. It can be understood that in addition to the above mode, the groove 140 can also be arranged on the first fixed part 110, the protrusion 150 can be arranged on the second fixed part 120, and the protrusion 150 of the second fixed part 120 is inserted into the groove 140 of the first fixed part 110, so as to tightly connect and fix the first fixed part 110 and the second fixed part 120, and improve the stability and firmness of the overall structure.

[0060] In addition, the pin connection mode can also be adopted, that is, the abutting surfaces of the first fixed part 110 and the second fixed part 120 are both provided with grooves 140, and the grooves 140 of the first fixed part 110 and the second fixed part 120 are connected by a pin (not shown), so as to realize stable connection of the first fixed part 110 and the second fixed part 120.

[0061] Referring to Figure 5 According to some embodiments of the utility model, a connecting piece 130 is further included, and the first fixed part 110 and the second fixed part 120 are connected and fixed by the connecting piece 130. The first fixed part 110 and the second fixed part 120 are both provided with grooves 140, and the two ends of the connecting piece 130 are both provided with protrusions 150, and the protrusions 150 are accommodated in the grooves 140. Alternatively, the first fixed part 110 and the second fixed part 120 are both provided with protrusions 150, and the two ends of the connecting piece 130 are both provided with grooves 140, and the protrusions 150 are accommodated in the grooves 140.

[0062] In the above description, the edge of the battery cell 10 is taken as an example of a semicircular arc structure for description, but there is also a structure in which the edge of the battery cell 10 is similar to a rounded corner (i.e., in the case of a thick battery cell 10), at which time a linear connecting piece 130 (see component 130 in FIG. 13) needs to be added between the semicircular arc-shaped first fixing part 110 and the second fixing part 120. Figure 5 The structure design of the connecting piece 130 is similar to that of the first support piece 300 and the second support piece 400. A protrusion 150 can be provided at both ends of the connecting piece 130, and a groove 140 can be provided at the first fixing part 110 and the second fixing part 120 to which the connecting piece 130 needs to be connected. The protrusion 150 is inserted into the groove 140, so that the first fixing part 110, the connecting piece 130, and the second fixing part 120 are connected to form a stable overall structure.

[0063] Of course, a groove 140 can also be provided at both ends of the connecting piece 130, and a protrusion 150 can be provided at the first fixing part 110 and the second fixing part 120, or a groove 140 can be provided at one end of the connecting piece 130, and a protrusion 150 can be provided at the other end, and a protrusion 150 or a groove 140 that matches the protrusion 150 or the groove 140 can be provided at the first fixing part 110 and the second fixing part 120, as long as stable connection between the first fixing part 100, the second fixing part 200, and the connecting piece 130 can be ensured. Therefore, Figure 5 The structure illustrated in FIG. 13 is only taken as an example for description and is not a limitation on the technical solutions of the present application.

[0064] In addition, the above description is a detailed description of the structure of the first fixing part 100, and the structure of the second fixing part 200 is the same as that of the first fixing part 100, which will not be described here.

[0065] Referring again to Figure 3 According to some embodiments of the present application, a plurality of first support pieces 300 are provided, and a plurality of second support pieces 400 are provided. The plurality of first support pieces 300 are arranged at intervals along the length direction of the battery cell 10, and the plurality of second support pieces 400 are arranged along the length direction of the battery cell 10. In the present application, it is preferred that a plurality of first support pieces 300 are provided, and a plurality of second support pieces 400 are provided. In this way, the plurality of support pieces can fix the battery cell 10 from different positions, which can further strengthen the overall fixing strength of the fixing assembly 20, increase the fixing effect on the battery cell 10, and help to improve the fixing strength of the battery cell 10 and the electrical safety performance of the battery. At the same time, by providing a plurality of support pieces, the structural strength of the battery can be improved, the battery cell 10 can be fixed without other structures, the space utilization inside the battery is high, and the energy density of the battery can be improved.

[0066] Referring to Figure 6 , Figure 7According to some embodiments of the present application, the thickness of the first fixing member 100, the second fixing member 200, the first supporting member 300 and the second supporting member 400 is L, and 0.2mm≤L≤10mm. Specifically, the fixing assembly 20 is installed on the outer periphery of the battery cell 10, and the thickness thereof cannot be too large or too small. In the present application, the thickness of the first fixing member 100, the second fixing member 200, the first supporting member 300 and the second supporting member 400 is set in the range of 0.2mm to 10mm, for example, can be 0.2mm, 1mm, 3mm, 5mm, 7mm, 10mm, which can not only avoid the insufficient supporting force due to the too thin thickness of the fixing assembly 20, but also avoid the excessive thickness of the fixing assembly 20 which occupies too much space inside the battery, and affects the energy density and overall size of the battery. Therefore, through the setting of the above size range, the close cooperation between the fixing assembly 20 and the battery cell 10 can be ensured, and sufficient supporting force and fixing effect can be provided for the battery cell 10, the mechanical stability of the battery as a whole is enhanced, and the space occupied by the fixing assembly 20 can be minimized. Under the premise of ensuring the safety and reliability of the battery, the energy density of the battery is improved.

[0067] According to some embodiments of the present application, the first fixing member 100 and the second fixing member 200 are both provided with a groove 140, the first supporting member 300 and the second supporting member 400 are both provided with a protrusion 150, and the protrusion 150 is accommodated in the groove 140. Alternatively, the first fixing member 100 and the second fixing member 200 are both provided with a protrusion 150, the first supporting member 300 and the second supporting member 400 are both provided with a groove 140, and the protrusion 150 is accommodated in the groove 140.

[0068] For the mounting manner between the first fixing member 100 and the second fixing member 200 and the first supporting member 300 and the second supporting member 400, riveting, biting, meshing, pin or buckle connection and the like can be adopted, which is similar to the connection manner between the first fixing part 110 and the second fixing part 120, and in the present application, the biting manner is taken as an example for description. That is, by setting the recess 140 on the first fixing member 100 and the second fixing member 200, and setting the protrusion 150 on the first supporting member 300 and the second supporting member 400, or by setting the protrusion 150 on the first fixing member 100 and the second fixing member 200, and setting the recess 140 on the first supporting member 300 and the second supporting member 400, or by setting the protrusion 150 on one end and the recess 140 on the other end of the first fixing member 100 and the second fixing member 200, and setting the protrusion 150 on one end and the recess 140 on the other end of the first supporting member 300 and the second supporting member 400, the protrusion 150 is inserted into the recess 140, so that the first fixing member 100, the second fixing member 200, the first supporting member 300 and the second supporting member 400 are connected with each other to form a whole fixing structure, so as to stably fix the battery cell 10, and effectively solve the problem of corner lithium precipitation caused by the loose battery cell 10 in the cycle process.

[0069] With reference to Figure 7 According to some embodiments of the present application, the first fixing member 100, the second fixing member 200, the first supporting member 300 and the second supporting member 400 are all provided with an inner surface 101 close to the battery cell 10 and an outer surface 102 away from the battery cell 10, the recess 140 has a first edge 103 and a second edge 104 along the thickness L direction, the distance between the first edge 103 and the inner surface 101 and the distance between the second edge 104 and the outer surface 102 are both W, and 0.1mm≤W≤1mm. Specifically, the edge distance of the groove from the outer surface 102 and the inner surface 101 of the component where the groove is located cannot be too large or too small. If the distance is too large, the opening size of the groove will be small, which is not convenient for installation and cannot provide sufficient mechanical strength. If the distance is too small, when the protrusion 150 is installed in the recess 140, the strength of the recess 140 cannot be guaranteed, and when the pole piece expands, the protrusion 150 is easy to extrude the recess 140, which causes the recess 140 to be damaged, and reduces the fixing effect of the fixing assembly 20. Therefore, the distance W is set to be between 0.1mm and 1mm in the present application, for example, it can be 0.1mm, 0.5mm or 1mm, which can not only guarantee the structural strength of the component, but also facilitate the installation of the protrusion 150 in the recess 140, and further improve the performance and safety of the battery.

[0070] According to some embodiments of the present application, the first fixing member 100 and the second fixing member 200 are made of thermosetting plastic. Specifically, the first fixing member 100 and the second fixing member 200 can be made of one of polyphenylene sulfide (PPS), polyimide, polyarylate, polyphenyl ester, polysulfone, etc. These materials have certain electrical insulation, chemical resistance, stability, and can keep the first fixing member 100 and the second fixing member 200 stable under high temperature and high stress conditions, thereby improving the performance and safety of the battery, and enabling it to work reliably in various environments.

[0071] The first support member 300 and the second support member 400 are made of a mixed material of nylon material and thermosetting plastic material. This composite material combines the toughness and wear resistance of nylon and the high temperature resistance and dimensional stability of thermosetting plastic, on the one hand, it can enhance the mechanical strength and impact resistance, on the other hand, it can provide excellent chemical resistance and low water absorption, thereby maintaining the stability of the battery structure in various environments.

[0072] According to the power consuming equipment of the second aspect of the present application, the battery is as described in any one of the above.

[0073] According to the power consuming equipment of the second aspect of the present application, at least the following beneficial effects are achieved: the first support member 300 connects one end of the first fixing member 100 and the second fixing member 200, and the second support member 400 connects the other end of the first fixing member 100 and the second fixing member 200, thereby the first fixing member 100, the second fixing member 200, and the first support member 300 and the second support member 400 connecting the first fixing member 100 and the second fixing member 200 are formed into a fixed structure surrounding the outer circumferential surface of the battery cell 10, so as to surround and fix the battery cell 10 in the thickness direction of the battery cell 10 and the width direction of the battery cell 10 at the same time.

[0074] Compared with the related art of using adhesive tape to fix the battery cell by surrounding half of the battery cell, the fixing assembly of the present application can fix the battery cell by surrounding the whole circumference of the battery cell. When the battery expands and thickens with the increase of the number of charge and discharge cycles, the fixing effect of the above fixing structure of the present application will not be weakened, and the battery cell is not prone to gradually loosen from the outside to the inside, which can improve the service life of the battery and the safety of the battery in use. Therefore, the power consuming equipment including the above battery can also effectively solve the problem of corner lithium precipitation caused by the loosening of the battery cell, thereby improving the service life and safety of the power consuming equipment in use.

[0075] The utility model embodiment makes the detailed explanation above binding the drawing, but the utility model is not limited to the above -mentioned embodiment, still can make various changes in the knowledge range of the ordinary skill of the people in the prior art without departing from the utility model's tenet. Besides, the embodiment and the feature in the embodiment of the utility model can be combined mutually without the conflict.

Claims

1. A battery, characterized by, The battery includes a battery cell and a fixing assembly for fixing the battery cell, the fixing assembly includes: a first fixing member; a second fixing member, the first fixing member and the second fixing member are respectively arranged on both sides of the battery cell in the width direction; a first supporting member; a second supporting member, the first supporting member and the second supporting member are respectively arranged on both sides of the battery cell in the thickness direction, both ends of the first supporting member are respectively connected to the first fixing member and the second fixing member, both ends of the second supporting member are respectively connected to the first fixing member and the second fixing member.

2. The battery of claim 1, wherein, The first fixing member includes a first fixing part and a second fixing part, the first fixing part and the second fixing part are fixedly connected to each other.

3. The battery of claim 2, wherein, The first fixing part is provided with a protrusion, the second fixing part is provided with a groove, and the protrusion is accommodated in the groove; Or; The first fixing part is provided with a groove, the second fixing part is provided with a protrusion, and the protrusion is accommodated in the groove. The first fixing part and the second fixing part are fixedly connected to each other by the protrusion and the groove.

4. The battery of claim 2, wherein, Further comprising a connecting member, the first fixing part and the second fixing part are fixedly connected to each other by the connecting member; Among them, the first fixing part and the second fixing part are both provided with a groove, both ends of the connecting member are provided with a protrusion, and the protrusion is accommodated in the groove; Or; The first fixing part and the second fixing part are both provided with a protrusion, and both ends of the connecting member are provided with a groove, and the protrusion is accommodated in the groove.

5. The battery of claim 1, wherein, The first supporting member is provided with a plurality of the second supporting member, a plurality of the first supporting member is arranged in the length direction of the battery cell, and a plurality of the second supporting member is arranged in the length direction of the battery cell.

6. The battery of claim 1, wherein, The thickness of the first fixing member, the second fixing member, the first supporting member and the second supporting member is L, 0.2mm≤L≤10mm.

7. The battery of claim 1, wherein, The first fixing member and the second fixing member are both provided with a groove, the first supporting member and the second supporting member are both provided with a protrusion, and the protrusion is accommodated in the groove; Or; The first fixing member and the second fixing member are both provided with a protrusion, and the first supporting member and the second supporting member are both provided with a groove, and the protrusion is accommodated in the groove.

8. The battery of claim 7, wherein, The first fixing member, the second fixing member, the first supporting member and the second supporting member are both provided with an inner surface close to the battery cell and an outer surface away from the battery cell, the groove has opposite first and second edges in the thickness direction of the battery cell, the distance between the first edge and the inner surface and the distance between the second edge and the outer surface are both W, 0.1mm≤W≤1mm.

9. The battery of claim 1, wherein, The material of the first fixing member and the second fixing member is thermosetting plastic.

10. An electrical device, characterized by The battery includes any one of claims 1 to 9. The battery includes any one of claims 1 to 9.

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