Battery and electric device

Abstract

The utility model relates to a battery and a power utilization device. The battery comprises a box body, a plurality of battery cells, an insulating plate and polystyrene foam, the plurality of battery cells are positioned in the box body, and glue filling gaps are formed between the adjacent battery cells at intervals. The insulating plate is arranged between the battery cell and the inner wall of the box body in an insulating manner, a hollow hole is formed in the insulating plate, and the hollow hole is opposite to the glue filling gap. The polystyrene foam is filled in the glue filling gap, penetrates through the hollow hole and is foamed to be bonded with the inner wall of the box body. According to the technical scheme, the hollow holes capable of avoiding foaming of the polystyrene foam are formed in the insulating plate, and the polystyrene foam filled in the glue filling gap can penetrate through the hollow holes in the foaming process to be foamed to be bonded with the inner wall of the box body, so that an insulating protection function is realized between the battery cell and the inner wall of the box body, and the polystyrene foam is bonded with the inner wall of the box body; and the position stability of the battery cell in the battery can be greatly improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to batteries and electrical devices. Background Art

[0002] In order to enhance the position reliability of each battery cell in the battery case, foam glue is usually filled in the battery case. According to the foaming height of the foam glue, it can be divided into full filling process and half filling process. In the full filling process, the foam glue can often foam and bond to the inner wall of the case, which is conducive to the stable installation of the battery cell in the case. Since the foam glue needs to be foamed to bond to the inner wall of the case, when there is a protective structure such as an insulating plate between the inner wall of the case and the battery cell, the foam glue is easily blocked and cannot be effectively foamed to the inner wall of the case, and the full filling process cannot be implemented, which is not conducive to improving the stability of the battery cell position. Utility Model Content

[0003] Based on this, it is necessary to provide a battery and an electrical device to address the problem that when there is an insulating protection structure between the inner wall of the battery box and the battery cell, the foam glue cannot be effectively bonded to the inner wall of the box, thereby reducing the stability of the battery cell position.

[0004] In a first aspect, the present application provides a battery, comprising:

[0005] Box;

[0006] A plurality of battery cells are located in the box, and a glue filling gap is formed between adjacent battery cells;

[0007] An insulating plate, insulated and arranged between the battery core and the inner wall of the box body, wherein the insulating plate is provided with a hollow hole, and the hollow hole is arranged opposite to the glue-filling gap; and

[0008] The foam glue is filled in the glue injection gap, penetrates the hollow holes and foams until it is bonded to the inner wall of the box body.

[0009] In some embodiments, the battery includes an electrical connection structure, which is arranged on one side where the poles of the plurality of battery cells are located, and is used to electrically connect the poles of the battery cells to an external device; the insulating plate is arranged between the electrical connection structure and the inner wall of the box;

[0010] The electrical connection structure is provided with a glue hole, and the hollow hole, the glue hole and the glue filling gap are arranged opposite to each other in sequence.

[0011] In some embodiments, the electrical connection structure includes a tab and an isolation plate, the isolation plate is insulated and isolated between the battery cell and the tab, and the tab is conductively connected to the pole of the battery cell; the glue hole is located on the isolation plate, and the tab avoids the glue hole.

[0012] In some embodiments, along the thickness direction of the insulating plate, a projection of part of the battery cell and a projection of part of the electrical connection structure are located within the range of the hollow hole.

[0013] In some embodiments, the thickness of the insulating plate is 3 mm to 10 mm.

[0014] In some embodiments, the battery further includes a buffer structure, which is disposed on the insulating plate and avoids the hollow hole. The buffer structure is located between the inner wall of the box and the insulating plate and can be deformed in the thickness direction of the insulating plate.

[0015] In some embodiments, the buffer structure includes buffer cotton and / or buffer springs; the buffer cotton is arranged between the insulating plate and the box body, and can be stretched and deformed in the thickness direction of the insulating plate; one end of the buffer spring is arranged on the insulating plate, and the other end can be deformed along the thickness direction of the insulating plate to abut the inner wall of the box body.

[0016] In some embodiments, the insulating plate includes at least two rows of hollow holes, each row of hollow holes is arranged along the extension direction of the insulating plate, and adjacent rows of hollow holes are staggered in the width direction of the insulating plate.

[0017] In some embodiments, the battery cell is a cylindrical battery cell, and the hollow hole includes a triangular hole.

[0018] In a second aspect, the present application provides an electrical device, comprising the above-mentioned battery, wherein the battery is used for supplying power.

[0019] The above-mentioned battery and electrical device are provided with hollow holes on the insulating plate to avoid the foaming of the foam glue. The foam glue filled in the glue filling gap can penetrate the hollow holes and foam to the inner wall of the box during the foaming process. In this way, not only the insulation protection function is achieved between the battery cell and the inner wall of the box, but also the foam glue is bonded to the inner wall of the box, which can greatly improve the position stability of the battery cell in the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0021] Figure 1 A schematic diagram of the internal structure of a battery in some embodiments;

[0022] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0023] Figure 3 for Figure 1 An exploded view of the battery shown;

[0024] Figure 4 for Figure 3 A schematic diagram of a portion of the structure of the battery shown;

[0025] Figure 5 for Figure 4 The enlarged view of point B in the middle;

[0026] Figure 6 Schematic diagram of the internal structure of some other batteries;

[0027] Figure 7 for Figure 6 Enlarged view of point C in the middle;

[0028] Figure 8 for Figure 6 An exploded view of the battery shown;

[0029] Fig. 9 for Figure 8 The enlarged view of point D in the middle;

[0030] Fig.10 for Figure 8 Schematic diagram of the structure of the middle insulation board;

[0031] Fig.11 for Fig.10 Enlarged view of point E in the middle.

[0032] The reference numerals in the specific implementation manner are as follows:

[0033] 100. Battery; 10. Box body; 11. Box cover; 12. Box body; 20. Battery cell; J. Glue filling gap; 30. Insulation board; L. Hollow hole; 40. Electrical connection structure; G. Glue hole; 41. Bar; 42. Isolation board; 50. Buffer structure; 51. Buffer cotton; 52. Buffer spring. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0035] In the description of the present application, it should be understood that terms such as “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships, if any, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do 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 therefore should not be understood as a limitation on the present application.

[0036] In addition, if present, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] In this application, unless otherwise clearly specified and limited, if any, the terms "installed", "connected", "connected", "fixed" and the like should be understood 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 intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] In the present application, if it appears, unless otherwise clearly specified and limited, a first feature “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature “above”, “above” and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature “below”, “below” and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] It should be noted that, if present, when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0040] The embodiment of the present application provides a battery with both insulation protection effect and stable cell position. The battery in the embodiment of the present application is described in detail below.

[0041] According to some embodiments, please refer to Figures 1 to 3 , Figures 6 to 8 The battery 100 provided in the embodiment of the present application includes a box 10, a plurality of battery cells 20, an insulating plate 30 and a foam glue (not shown). The plurality of battery cells 20 are located in the box 10, and a glue filling gap J is formed between adjacent battery cells 20. The insulating plate 30 is insulated and arranged between the battery cells 20 and the inner wall of the box 10, and a hollow hole L is arranged on the insulating plate 30, and the hollow hole L is arranged opposite to the glue filling gap J. The foam glue is filled in the glue filling gap J, and penetrates the hollow hole L to foam until it is bonded to the inner wall of the box 10.

[0042] There are many design methods for the specific structure of the box body 10, which are not limited here. For example, the box body 10 includes a box body 12 and a box cover 11, the battery cell 20, the insulating plate 30, and the foam glue are arranged in the box body 12, and the box cover 11 covers the open end of the box body 12. The box cover 11 generally refers to the cover structure located on the top of the box body 10. A plurality of battery cells 20 can be accommodated in the box body 10. The plurality of battery cells 20 can be connected in series, in parallel, or in mixed connection. Mixed connection means that the plurality of battery cells 20 are both connected in series and in parallel. The battery cell 20 can be a secondary battery 100 or a primary battery 100. The battery cell 20 can be a lithium-sulfur battery 100, a sodium-ion battery 100, or a magnesium-ion battery 100, but is not limited thereto. The battery cell 20 can be cylindrical, flat, rectangular, or in other shapes.

[0043] The battery cell 20 generally includes a shell, an electrode assembly contained in the shell, and an electrolyte disposed in the shell. The electrolyte may be solid or liquid. The electrode assembly is the smallest unit for electrochemical reaction in the battery 100, and realizes the charging and discharging of the battery cell 20, and generally includes a positive electrode sheet, a negative electrode sheet, and a separator separating the positive electrode sheet from the negative electrode sheet. The battery cell 20 generally also includes poles (positive poles and negative poles) for connecting the battery cell 20 to an external circuit. The positive pole and the negative pole may be arranged on the same side of the battery cell 20, or on different sides of the battery cell 20. For cylindrical batteries, the positive pole and the negative pole are generally arranged on different sides.

[0044] The box 10 is usually made of a strong metal material, and the outer shell of the battery cell 20 is usually made of a strong and light metal material, such as an aluminum shell. When the battery cell 20 is charged or discharged, the outer shell of the battery cell 20 is easily charged, and the pole of the battery cell 20 is charged. If the battery cell 20 is in direct contact with the inner wall of the box 10, leakage is likely to occur. Therefore, an insulating plate 30 is provided between the battery cell 20 and the inner wall of the box 10 to insulate and isolate the battery cell 20 from the box 10.

[0045] The insulating plate 30 has insulating properties and can be made of, but is not limited to, plastic material, such as polycarbonate (PC), polyethylene (PE), and polypropylene (PP). Understandably, the insulating plate 30 is located between the battery cell 20 and the inner wall of the box body 10 in the thickness direction thereof. A pole may or may not be provided on the surface of the battery cell 20 opposite to the insulating plate 30.

[0046] When multiple battery cells 20 are stored in the box 10, a glue filling gap J is formed between adjacent battery cells 20. For example, when the battery cell 20 is a cylindrical battery cell, the glue filling gap J will still be formed after the adjacent battery cells 20 are abutted. Of course, the shape of the battery cell 20 is not limited, as long as there is a glue filling gap J. A hollow hole L is provided on the insulating plate 30 corresponding to the glue filling gap J, that is, along the thickness direction of the insulating plate 30, the projection of the hollow hole L overlaps with the projection of the glue filling gap J.

[0047] Understandably, multiple battery cells 20 usually form multiple glue filling gaps J, and hollow holes L are provided on the insulating plate 30 corresponding to each glue filling gap J. In order to improve the strength of the insulating plate 30, the size of the hollow hole L should not be too large, and usually one hollow hole L corresponds to one glue filling gap J.

[0048] The foam glue can be selected from commonly used materials in the field, and the details are not repeated here. The foam glue is filled in the glue filling gap J between the battery cells 20, and the battery cells 20 are bonded together. At the same time, the foam glue can penetrate the hollow holes L during the foaming process and foam toward the inner wall of the box body 10 until it is bonded to the inner wall of the box body 10. In an application example, after the battery cells 20 and the insulating plate 30 are placed in the box body 10, a preset amount of foam glue is first injected into the glue filling gap J, and then the box cover 11 is closed. After waiting for a certain period of time, the foam glue foams by itself and fills the glue filling gap J, and at the same time penetrates the hollow holes L and is bonded to the box cover 11 of the box body 10.

[0049] The above-mentioned battery 100 is provided with hollow holes L on the insulating plate 30 to avoid the foaming of the foam glue. The foam glue filled in the glue filling gap J can penetrate the hollow holes L during the foaming process and foam to the inner wall of the box body 10. In this way, not only the insulation protection function is realized between the battery cell 20 and the inner wall of the box body 10, but also the foam glue is bonded to the inner wall of the box body 10, which can greatly improve the position stability of the battery cell 20 in the battery 10.

[0050] In practical applications, the insulating sheet may be disposed between the box cover 11 and the battery cell 20 , or the insulating sheet may be disposed between the box bottom and the battery cell 20 .

[0051] In some embodiments, reference Figure 3 , Figure 8 and Fig. 9 The battery 100 includes an electrical connection structure 40, which is arranged on the side where the pole of the battery cell 20 is located, and is used to electrically connect the pole of the battery cell 20 with an external device. An insulating plate 30 is arranged between the electrical connection structure 40 and the inner wall of the box body 10. The electrical connection structure 40 is provided with a glue hole G, and the hollow hole L, the glue hole G and the glue filling gap J are arranged in sequence.

[0052] The electrical connection structure 40 is used to realize the series / parallel connection between the poles of multiple battery cells 20, and is used to aggregate the currents of multiple battery cells 20 and output them externally or aggregate the external current and output them to each battery cell 20. The electrical connection structure 40 is conductively connected to the poles of the battery cells 20, which can be but not limited to welding connections. Due to overcurrent, high-voltage arcing, short circuit leakage, etc. are prone to occur between the electrical connection structure 40 and the inner wall of the box 10. At this time, an insulating sheet is arranged between the electrical connection structure 40 and the inner wall of the box 10, which can play a certain role in insulation protection. In conventional settings, the inner wall of the box 10 opposite to the electrical connection structure 40 is the inner wall of the box cover 11.

[0053] In order to allow the foamed glue in the glue filling gap J to foam to the inner wall of the box body 10, a glue hole G is provided on the electrical connection structure 40. Along the thickness direction of the insulating plate 30, the projections of the hollow hole L, the glue hole G and the glue filling gap J overlap.

[0054] In this way, the foam glue in the glue filling gap J can be foamed through the glue holes G and the hollow holes L in sequence until it is bonded to the inner wall of the box body 10. The provision of the glue holes G and the hollow holes L not only facilitates the foaming of the foam glue, but also reduces the external force acting on the electrical connection structure 40 when the foam glue is foamed and expanded, and can reduce the degree of deformation and displacement of the electrical connection structure 40 relative to the battery cell 20, thereby improving the reliability of the connection position between the electrical connection structure 40 and the battery cell 20.

[0055] Specifically in the embodiment, refer to Fig. 9 The electrical connection structure 40 includes a tab 41 and an isolation plate 42. The isolation plate 42 is insulated and isolated between the battery cell 20 and the tab 41. The tab 41 is conductively connected to the pole of the battery cell 20. The glue hole G is located on the isolation plate 42, and the tab 41 avoids the glue hole G.

[0056] The bar 41 is usually a metal sheet and can be welded to the pole. The isolation plate 42 can be, but is not limited to, a plastic plate or a ceramic plate, and is mainly used to electrically isolate the bar 41 from the non-pole area of ​​the battery cell 20 to prevent the battery cell 20 from short-circuiting due to contact with the bar 41. A glue hole G is provided on the isolation plate 42, and the bar 41 avoids the glue hole G.

[0057] In practical applications, the electrical connection structure 40 may adopt a conventional CCS (Cells Contact System, integrated busbar) component.

[0058] In some embodiments, reference Figure 5 Along the thickness direction of the insulating plate 30 , the projection of part of the battery cell 20 and the projection of part of the electrical connection structure 40 are located within the range of the hollow hole L.

[0059] That is, before the foaming glue is foamed, the hollow hole L can reveal part of the battery cell 20 and part of the electrical connection structure 40. It is understandable that the glue filling gap J is usually a special-shaped hole. When designing the size of the hollow hole L, if the size of the hollow hole L is equal to the glue filling gap J, it will increase the design difficulty. At this time, the size of the hollow hole L is designed to be slightly larger, which can not only reveal the glue filling gap J, but also reveal part of the battery cell 20 and part of the electrical connection structure 40. During assembly, the hollow hole L can effectively reveal the glue filling gap J, so that the foaming glue can be smoothly installed, and the design size of the hollow hole L does not require high accuracy, which can effectively reduce the design cost.

[0060] In some embodiments, the thickness of the insulating plate 30 is 3 mm to 10 mm. The thickness of the insulating plate 30 is the dimension in the thickness direction. Generally, the insulating plate 30 is a plate-like structure with uniform thickness everywhere. Specifically, the thickness of the insulating plate 30 can be selected as 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, and any value between adjacent values.

[0061] Understandably, the thicker insulating plate 30 can produce a stronger insulating protection effect between the battery cell 20 and the inner wall of the box body 10. Moreover, the thicker insulating plate 30 has a strong deformation ability to resist the thrust when the foaming glue expands, and can effectively support the tab 41, pressing the tab 41 against the battery cell 20, reducing the probability of the connection between the tab 41 and the battery cell 20 being broken. At this time, when the thickness of the insulating plate 30 is within the above range, the insulating plate 30 can not only play a better protective effect, but also effectively support the tab 41, while occupying a limited space inside the battery 100, and having little effect on the energy density of the battery 100.

[0062] In some embodiments, reference Figure 3 , Figure 4 , Figure 7 and Figure 8The battery 100 further includes a buffer structure 50 , which is disposed on the insulating plate 30 and avoids the hollow hole L. The buffer structure 50 is located between the inner wall of the box body 10 and the insulating plate 30 , and can be deformed in the thickness direction of the insulating plate 30 .

[0063] The buffer structure 50 is disposed on the side of the insulating plate 30 away from the battery cell 20 in the thickness direction, and deforms in the thickness direction of the insulating plate 30 to adapt to the distance between the insulating plate 30 and the inner wall of the box body 10, and to make up for the assembly gap tolerance between the insulating cover plate and the box body 10. The buffer structure 50 avoids the hollow hole L, that is, the buffer structure 50 is staggered from the hollow hole L to avoid hindering the foaming of the foam glue.

[0064] Specifically in the embodiment, refer to Figures 2 to 4 , Figure 10 to Figure 11 The buffer structure 50 includes a buffer cotton 51 and / or a buffer spring 52. The buffer cotton 51 is clamped between the insulating plate 30 and the box body 10 and can be deformed in the thickness direction of the insulating plate 30. One end of the buffer spring 52 is provided on the insulating plate 30, and the other end is deformable along the thickness direction of the insulating plate 30 to abut against the inner wall of the box body 10.

[0065] The buffer cotton 51 can be made of materials such as asbestos and sponge, and has a soft structure and a plurality of compressible holes inside. The buffer cotton 51 can be fixed on the insulating plate 30 (for example, by bonding), or clamped between the insulating plate 30 and the box body 10. The buffer cotton 51 is inexpensive, which is beneficial to the cost control of the battery 100. Specifically, the buffer cotton 51 can be arranged continuously or at intervals along the outer circumference of the insulating plate 30.

[0066] One end of the buffer spring 52 can be fixed to the insulating plate 30 by welding, bonding, etc., and the other end is free and abuts against the inner wall of the box 10. The other end of the buffer spring 52 can be compressed and deformed by the box 10. The provision of the buffer spring 52 can simplify the assembly of the insulating plate 30 and the box 10.

[0067] In some embodiments, reference Figure 4 The insulating plate 30 includes at least two rows of hollow holes L, each row of hollow holes L is arranged along the extension direction of the insulating plate 30, and adjacent rows of hollow holes L are staggered in the width direction of the insulating plate 30.

[0068] Generally, the extension direction of the insulating plate 30 is the direction in which its size is the largest, and its width direction size is smaller than its extension direction size. In practical applications, multiple battery cells 20 can be arranged in a row along the extension direction of the insulating plate 30, and multiple rows of battery cells 20 are arranged in sequence in the width direction of the insulating plate 30. A glue filling gap J is formed between adjacent rows of battery cells 20.

[0069] Each row of hollow holes L is sequentially provided with a plurality of hollow holes L in the extension direction of the insulating plate 30, and each row of hollow holes L is arranged corresponding to the glue filling gap J between two adjacent rows of battery cells 20. Taking the battery cells 20 as cylindrical battery cells as an example, the two rows of glue filling gaps J formed by the three adjacent rows of battery cells 20 are staggered in the width direction of the insulating plate 30. At this time, staggering the hollow holes L in adjacent rows in the width direction can adapt to the arrangement of cylindrical battery cells.

[0070] In some embodiments, reference Figure 5 , and combined with Figure 3 and Figure 8 , the battery cell 20 is a cylindrical battery cell, and the hollow hole L includes a triangular hole. When the battery cell 20 is a cylindrical battery cell, a triangular-shaped glue-filling gap J is formed between each row of battery cells 20. Thus, the hollow hole L is designed to be a triangle to adapt to this situation, so that the shape of the hollow hole L is more matched with the glue-filling gap J, which can effectively reduce the opening area of ​​the hollow hole L and improve the strength of the insulating plate 30.

[0071] Of course, in other embodiments, when the battery cell 20 is a cylindrical battery cell, the hollow hole L may also be a hole of other shapes such as a round hole or a square hole.

[0072] In one embodiment of the present application, the battery 100 includes a battery cell 20, a box body 10, an insulating plate 30, an electrical connection structure 40 and a foaming glue. The box body 10 includes a box cover 11. The electrical connection structure 40 is arranged between the side where the pole of the battery cell 20 is located and the box cover 11. The insulating plate 30 is arranged between the electrical connection structure 40 and the box cover 11. The battery cell 20 is a cylindrical battery cell. A glue filling gap J is formed between the battery cells 20. A glue hole G is arranged on the electrical connection structure 40. A triangular hollow hole L is arranged on the insulating plate 30. The hollow hole L, the glue tail and the glue filling gap J are arranged opposite to each other in sequence. The foaming glue is filled in the glue filling gap J, and foams to the inner wall of the box cover 11 through the glue hole G and the hollow hole L in sequence.

[0073] In addition, the embodiment of the present application further provides an electric device, which includes the above-mentioned battery 100, and the battery 100 is used to supply power. The electric device may be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery car, an electric car, a ship, etc. Taking the electric device as a vehicle as an example, the battery 100 may be arranged at the rear, head, or bottom of the vehicle, and the battery 100 may provide power for the drive of the vehicle, and may also provide power for the control system of the vehicle.

[0074] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0075] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A battery, characterized in that: The battery comprises: Box body (10); A plurality of battery cells (20) are located in the box (10), and a glue filling gap (J) is formed between adjacent battery cells (20); an insulating plate (30) arranged between the battery core (20) and the inner wall of the box (10) for insulation, the insulating plate (30) being provided with a hollow hole (L), the hollow hole (L) being arranged opposite to the glue injection gap (J); and The foam glue is filled in the glue injection gap (J), penetrates the hollow hole (L) and foams until it is bonded to the inner wall of the box body (10).

2. The battery according to claim 1, characterized in that The battery comprises an electrical connection structure (40), the electrical connection structure (40) being arranged on one side where the poles of the plurality of battery cells (20) are located, and being used for electrically connecting the poles of the battery cells (20) with an external device; the insulating plate (30) being arranged between the electrical connection structure (40) and the inner wall of the box body (10); The electrical connection structure (40) is provided with a glue hole (G), and the hollow hole (L), the glue hole (G) and the glue filling gap (J) are arranged opposite to each other in sequence.

3. The battery according to claim 2, characterized in that The electrical connection structure (40) includes a tab (41) and an isolation plate (42), wherein the isolation plate (42) is insulated and isolated between the battery cell (20) and the tab (41), and the tab (41) is conductively connected to the pole of the battery cell (20); the glue hole (G) is located on the isolation plate (42), and the tab (41) avoids the glue hole (G).

4. The battery according to claim 2, characterized in that Along the thickness direction of the insulating plate (30), a projection of part of the battery core (20) and a projection of part of the electrical connection structure (40) are located within the range of the hollow hole (L).

5. The battery according to any one of claims 1 to 4, characterized in that: The thickness of the insulating plate (30) is 3 mm to 10 mm.

6. The battery according to any one of claims 1 to 4, characterized in that: The battery further comprises a buffer structure (50), wherein the buffer structure (50) is arranged on the insulating plate (30) and avoids the hollow hole (L); the buffer structure (50) is located between the inner wall of the box body (10) and the insulating plate (30), and is deformable in the thickness direction of the insulating plate (30).

7. The battery according to claim 6, characterized in that The buffer structure (50) comprises buffer cotton (51) and / or buffer spring sheet (52); the buffer cotton (51) is arranged between the insulating plate (30) and the box body (10), and is capable of stretching and deforming in the thickness direction of the insulating plate (30); one end of the buffer spring sheet (52) is arranged on the insulating plate (30), and the other end is deformable along the thickness direction of the insulating plate (30) to abut against the inner wall of the box body (10).

8. The battery according to any one of claims 1 to 4, characterized in that: The insulating plate (30) comprises at least two rows of hollow holes (L), each row of hollow holes (L) is arranged along the extension direction of the insulating plate (30), and adjacent rows of hollow holes (L) are staggered in the width direction of the insulating plate (30).

9. The battery according to any one of claims 1 to 4, characterized in that: The battery core (20) is a cylindrical battery core (20), and the hollow hole (L) comprises a triangular hole.

10. An electrical device, characterized in that: The invention comprises a battery as claimed in any one of claims 1 to 9, wherein the battery is used for supplying power.

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