Battery pack and electric equipment with same

Abstract

The utility model relates to the technical field of battery packs, and discloses a battery pack and electric equipment with the battery pack, the battery pack has a first direction, a second direction and a third direction, and the battery pack comprises a box body with an accommodating cavity; the box cover is connected to the box body and covers and seals the accommodating cavity; the multiple battery packs are located in the containing cavity and arranged at intervals in the first direction, each battery pack comprises multiple single batteries, and each single battery comprises a cover plate; the isolation plate extends in the first direction, the isolation plate comprises base body parts and connecting parts, the multiple base body parts are arranged at intervals in the first direction, the connecting parts are connected with the two adjacent base body parts in the first direction, hollow holes are formed in the connecting parts, and the cover plate is exposed out of the hollow holes; and the multiple pressing strips are arranged at intervals in the first direction, extend in the second direction and are connected with the cover plate. According to the battery pack disclosed by the utility model, the flexible circuit board is pressed through the isolation plate.

Description

Technical Field

[0001] This utility model relates to the field of battery pack technology, specifically to a battery pack and an electrical device having the same. Background Technology

[0002] The battery pack used in electric vehicles serves as the power supply side of the car. Its volumetric energy density depends on the amount of energy that the battery pack can effectively fill within a given space. Volumetric energy density measures the energy storage capacity of a battery pack per unit volume. This metric is crucial for evaluating battery performance because it directly relates to the total amount of energy a battery can provide within a given space. A high volumetric energy density battery pack can store more energy within the same volume, helping to improve the device's range and provide users with longer usage time.

[0003] In related technologies, battery packs often suffer from poor fixation of flexible circuit boards, which can lead to lower accuracy in information collection. Utility Model Content

[0004] In view of this, the present invention provides a battery pack and an electrical device having the same, in order to solve the problem of poor fixation of flexible circuit boards.

[0005] In a first aspect, this utility model provides a battery pack having intersecting first, second, and third directions, comprising: a housing having a receiving cavity; a housing cover connected to the housing and sealing the receiving cavity; multiple battery packs located in the receiving cavity, the multiple battery packs being spaced apart along the first direction, each battery pack comprising multiple battery cells, the multiple battery cells being arranged along the second direction, each battery cell comprising a cover plate; and a separator plate connected to the cover plate along the third direction and facing the housing cover along the third direction, the separator plate extending along the first direction, the separator plate comprising a base portion and a connecting portion. The system comprises a plurality of base portions and connecting portions, wherein the plurality of base portions are spaced apart along the first direction, the connecting portions are connected to two adjacent base portions along the first direction, and the connecting portions are provided with a through hole along the third direction, and at least a portion of the cover plate is exposed through the through hole; a flexible circuit board is connected to the isolation plate and is located between the isolation plate and the cover plate along the third direction; and a plurality of pressure strips are spaced apart along the first direction, the pressure strips extend along the second direction, the pressure strips are located on the side of the connecting portion away from the flexible circuit board, and the pressure strips are connected to the cover plate.

[0006] Positioning the flexible circuit board (PCB) along a third direction between the separator and the battery pack cover serves two purposes. First, the closer proximity of the PCB to the individual battery cells facilitates contact and allows the PCB to collect parameters such as voltage, current, and temperature. Second, the separator applies pressure to the PCB, fixing its position and reducing vibration, thus improving the relative positional stability between the PCB and the battery cells and enhancing the accuracy of data acquisition. By connecting a pressure strip to the cover, the relative positions of the multiple battery cells within the battery pack are defined, ensuring the relative position between the battery cells and the PCB, further improving the accuracy of data acquisition.

[0007] In an optional embodiment, the battery pack further includes: a plurality of adhesive members arranged at intervals along the first direction, wherein each of the plurality of adhesive members corresponds one-to-one with a plurality of pressure strips, each adhesive member including a plurality of adhesive portions arranged at intervals along the second direction, the adhesive portions being located between all the pressure strips and the cover plate along the third direction, and being connected to the cover plate and the pressure strip respectively.

[0008] By setting adhesive components, the connection strength between the pressure strip and the cover plate can be improved, the probability of relative displacement between the pressure strip and the battery pack can be reduced, and the relative position between the pressure strip and the battery pack can be ensured to be stable.

[0009] In one alternative embodiment, the cover plate has an insulating layer on the side facing the pressure strip along the third direction, the insulating layer has a through hole extending through it along the third direction, a portion of the cover plate is exposed through the through hole, and the adhesive is connected to the cover plate exposed through the through hole.

[0010] By setting an insulating layer, the probability of contact between the cover plate and the box cover can be reduced, preventing the box cover from becoming electrified, which helps ensure the safety of the battery pack. Furthermore, the adhesive component can directly contact the cover plate through the through hole, which helps improve the connection reliability between the adhesive component and the cover plate.

[0011] In one alternative embodiment, the flexible circuit board includes a main body extending along the first direction, the main body being connected to the insulating layer along the third direction, and the main body being located between the insulating layer and the pressure strip along the third direction.

[0012] The insulating layer can insulate the side of the main body facing the cover plate and make the flexible circuit board more robust.

[0013] In one optional embodiment, the main body portion and the through hole are spaced apart along the second direction, and the main body portion is located between two adjacent through holes disposed along the second direction.

[0014] This can prevent the main body and the cover from contacting each other, and prevent electrical conduction between the main body and the battery cells, thus improving the safety of the battery pack.

[0015] In one optional embodiment, the cover plate is provided with a terminal post that passes through the base portion, and the battery pack further includes a plurality of busbars located on the side of the base portion facing the cover, and the plurality of busbars are electrically connected to the plurality of terminal posts one by one.

[0016] It can collect electrical information such as voltage and current of the battery pack, as well as temperature information, which is beneficial for monitoring the working status of the battery pack.

[0017] In one optional embodiment, the battery pack further includes: a plurality of insulating strips spaced apart along the first direction, the insulating strips extending along the second direction, the insulating strips located on the side of the busbar away from the separator along the third direction, and the insulating strips located between the busbar and the cover.

[0018] It can separate the cover and the busbar, prevent the cover and the busbar from contacting each other, reduce the probability of the cover becoming charged, and improve the safety of the battery pack.

[0019] In one optional embodiment, the insulating strip is provided with a plurality of anti-slip ribs on the side facing the busbar along the third direction, the anti-slip ribs protruding along the third direction, the plurality of anti-slip ribs being spaced apart along the second direction, and the anti-slip ribs contacting the busbar.

[0020] It can prevent relative displacement between the insulating strip and the busbar, ensuring the stability of the insulating strip's position.

[0021] In one optional embodiment, the isolation plate has a positioning post on the side facing the flexible circuit board along the third direction, and the flexible circuit board has a positioning hole through it along the third direction, with the positioning post inserted into the positioning hole.

[0022] It can achieve positioning between the isolation plate and the flexible circuit board, which is convenient for installation and has high installation accuracy.

[0023] Secondly, this utility model also provides an electrical device, including the battery pack described in the first aspect.

[0024] The electrical equipment of this utility model utilizes the battery pack described in the first aspect, which can press the flexible circuit board with an isolation plate and fix the battery pack with a pressure strip. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the battery pack structure according to an embodiment of the present invention;

[0027] Figure 2 This is an exploded view of the battery pack according to an embodiment of the present invention;

[0028] Figure 3 This is one of the connection diagrams of the isolation plate, busbar, battery pack, pressure strip and insulating strip in an embodiment of this utility model;

[0029] Figure 4 This is an exploded view of the isolation plate, busbar, battery pack, pressure strip, and insulating strip according to an embodiment of the present utility model.

[0030] Figure 5 This is a cross-sectional view of the battery pack, pressure strip, and adhesive component according to an embodiment of the present utility model;

[0031] Figure 6 for Figure 5 A magnified view of a portion of region A in the middle;

[0032] Figure 7 This is an exploded view of the battery pack, pressure strip, and adhesive component according to an embodiment of the present invention;

[0033] Figure 8 This is a second schematic diagram showing the connection of the isolation plate, busbar, battery pack, pressure strip, and insulating strip according to an embodiment of this utility model;

[0034] Figure 9 for Figure 8 A magnified view of a portion of region B in the middle;

[0035] Figure 10 This is a schematic diagram of the structure of the flexible circuit board according to an embodiment of the present invention;

[0036] Figure 11 This is a schematic diagram of the structure of a single battery cell according to an embodiment of the present invention.

[0037] Explanation of reference numerals in the attached figures:

[0038] 1. Battery pack;

[0039] 100. Box body; 101. Receiving cavity; 102. Box lid;

[0040] 200. Battery pack; 210. Battery cell; 211. Terminal post; 212. Cover plate; 213. Insulating layer; 214. Through hole;

[0041] 300. Isolation plate; 310. Base body; 320. Connecting part; 321. Hole;

[0042] 400. Flexible circuit board; 402. Temperature acquisition unit; 403. Voltage acquisition unit; 404. Main body;

[0043] 500, busbar;

[0044] 600. Pressure strip; 610. Adhesive component; 611. Adhesive part;

[0045] 700. Insulating strip. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0047] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0048] In the description of this utility model, "a plurality of" means two or more. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0049] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0050] The following is combined Figures 1-11 The embodiments of the present invention are described as shown.

[0051] According to an embodiment of the present invention, in a first aspect, a battery pack 1 is provided, the battery pack 1 including a housing 100, a housing cover 102, multiple battery packs 200, an isolation plate 300, a flexible circuit board 400, a busbar 500 and multiple pressure strips 600.

[0052] The housing 100 has a receiving cavity 101, and a cover 102 is connected to the housing 100 and covers the receiving cavity 101. Multiple battery packs 200 are located within the receiving cavity 101, and the multiple battery packs 200 are arranged at intervals along a first direction X. Each battery pack 200 includes multiple battery cells 210, and the multiple battery cells 210 are arranged along a second direction Y. Each battery cell 210 includes a cover plate 212. The isolation plate 300 is located inside the receiving cavity 101. The isolation plate 300 is connected to the cover plate 212 along the third direction Z and faces the box cover 102 along the third direction Z. The isolation plate 300 extends along the first direction and includes a base portion 310 and a connecting portion 320. There are multiple base portions 310 and connecting portions 320. Multiple base portions 310 are spaced apart along the first direction X. The connecting portion 320 is connected to two adjacent base portions 310 along the first direction X. The connecting portion 320 is provided with a hollow hole 321 through the third direction Z. At least a part of the cover plate 212 is exposed through the hollow hole 321.

[0053] The cover plate 212 is provided with a terminal post 211, which passes through the base part 310. The battery pack also includes multiple busbars 500, which are located on the side of the base part 310 facing the cover 102, and the multiple busbars 500 are electrically connected to the multiple terminal posts 211 one by one.

[0054] Busbar 500 is located on the side of the base portion 310 facing the cover 102 along the third direction Z, and busbar 500 is electrically connected to the terminal post 211. Specifically, busbar 500 is connected to the terminal post 211 of two adjacent battery cells 210. For example, busbar 500 is connected to the positive terminal post of one battery cell 210 and to the negative terminal post of another battery cell 210, so as to realize the series connection between two adjacent battery cells 210.

[0055] The flexible circuit board 400 is connected to the isolation plate 300, and the flexible circuit board 400 is located between the isolation plate 300 and the cover plate 212 along the third direction Z. A plurality of pressure strips 600 are spaced apart along the first direction X, and the pressure strips 600 extend along the second direction Y. The pressure strips 600 are located on the side of the connecting portion 320 away from the flexible circuit board 400, and the pressure strips 600 are connected to the cover plate 212.

[0056] In other words, the separator 300 is disposed between the battery pack 200 and the cover 102 along the third direction Z. The separator 300 is made of insulating material, such as insulating plastic, which can separate the battery pack 200 from the cover 102, prevent electrical connection between the battery pack 200 and the cover 102, reduce the probability of the cover 102 becoming charged, and improve the safety of the battery pack 1.

[0057] The flexible printed circuit board 400 (FPC) in battery pack 1 is used to collect data from the battery cells 210. However, due to the low rigidity of the flexible printed circuit board 400, it is not easy to fix and is prone to vibration, which affects the reliability of the collected data. Furthermore, the battery cells 210 may expand, causing displacement between the battery cells 210 and the flexible printed circuit board 400, which further affects the reliability of the collected data.

[0058] The flexible circuit board 400 is located between the isolation plate 300 and the battery pack 200 along the third direction Z. On the one hand, the closer distance between the flexible circuit board 400 and the battery pack 200 facilitates contact between the flexible circuit board 400 and the battery pack 200, thereby making it easier for the flexible circuit board 400 to collect parameter information such as voltage, current and temperature of the battery pack 200. On the other hand, the isolation plate 300 can apply pressure to the flexible circuit board 400, fix the position of the flexible circuit board 400, reduce the vibration probability of the flexible circuit board 400, and improve the relative positional stability between the flexible circuit board 400 and the battery pack 200, thereby improving the accuracy of information collection by the flexible circuit board 400.

[0059] The battery pack 1 includes a housing 100 and battery cells 210. The battery cells 210 are located inside the housing 100, and there are multiple battery cells 210. Multiple battery cells 210 form at least one battery pack 200. In the battery pack 200, multiple batteries need to be assembled into a whole to reduce the risk of battery shaking inside the housing 100, thereby improving the reliability of the battery pack 1. Therefore, in order for the battery cells 210 to have relatively high reliability, the battery pack 200 as a whole needs to have relatively high structural stability.

[0060] In this application, each battery pack 200 is connected by a connecting plate, which is located on both sides of the battery pack 200, and multiple connecting plates are spaced apart along the first direction X. Therefore, the pressure strip 600 can better fix the battery pack 200. After fixing, glue is poured into the casing 100 to further fix the battery pack 200 relative to the casing 100. Similarly, a perforated hole 321 is provided through the connecting part 320 along the third direction Z, which also facilitates the connection of glue to the cover plate 212 during glue pouring.

[0061] The connecting portion 320 has multiple covering portions, which are spaced apart along the second direction Y. The area of ​​the covering portions is not less than the area of ​​the main body portion 404, which enables better fixation of the flexible circuit board 400.

[0062] By providing a perforated hole 321 in the connecting part 320, the pressure strip 600 and the cover plate 212 can be made in contact. At least one pressure strip 600 connects to multiple battery cells 210 of each battery pack 200. The pressure strip 600 can limit the relative position between the cover plates 212 of multiple battery cells 210, thereby fixing the relative position between the battery cells 210 and the flexible circuit board 400, and further improving the accuracy of information collection by the flexible circuit board 400.

[0063] like Figures 5-7 As shown, in the technical solution of this embodiment, the battery pack 1 further includes a plurality of adhesive members 610. The plurality of adhesive members 610 are arranged at intervals along the first direction X. The plurality of adhesive members 610 correspond one-to-one with the plurality of pressure strips 600. The adhesive members 610 include a plurality of adhesive portions 611. The plurality of adhesive portions 611 are arranged at intervals along the second direction Y. The adhesive portions 611 are located between the pressure strips 600 and the cover plate 212 along the third direction Z. The adhesive portions 611 are connected to the pressure strips 600 and the cover plate 212 respectively.

[0064] The adhesive portion 611 can be double-sided adhesive, structural adhesive, etc. The side of the pressure strip 600 closest to the cover plate 212 along the third direction Z can be set as a rough surface. The rough surface can have a larger contact area with the adhesive portion 611, which can better define the relative positions between the multiple battery cells 210 of the battery pack 200.

[0065] By setting the adhesive component 610, the connection strength between the pressure strip 600 and the cover plate 212 can be improved, the relative position between the pressure strip 600 and the cover plate 212 can be effectively fixed, and the probability of relative displacement between the pressure strip 600 and the battery pack 200 can be reduced.

[0066] like Figure 9 and Figure 11As shown, in the technical solution of this embodiment, the cover plate 212 is provided with an insulating layer 213 on the side of the pressure strip 600 along the third direction Z. The pole post 211 passes through the insulating layer 213 along the third direction Z. The insulating layer 213 is provided with a through hole 214 along the third direction Z. A part of the cover plate 212 is exposed from the through hole 214. The adhesive 610 is connected to the cover plate 212 exposed from the through hole 214.

[0067] By setting the insulating layer 213, electrical conductivity between the cover plate 212 and the box cover 102 can be avoided, improving the safety of the battery pack 1. Furthermore, the adhesive 610 can directly contact the cover plate 212 through the through hole 214, which helps to improve the connection reliability between the adhesive 610 and the cover plate 212.

[0068] like Figures 8-11 As shown, in the technical solution of this embodiment, the flexible circuit board 400 includes a main body 404, which extends along a first direction X and is connected to the insulating layer 213 along a third direction Z. The main body 404 is located between the insulating layer 213 and the pressure strip 600 along the third direction Z.

[0069] The main body 404 and the insulating layer 213 can be bonded together, increasing the connection strength between them and improving the relative positional stability between the flexible circuit board 400 and the battery pack 200, resulting in better fixation of the flexible circuit board 400. Since the insulating layer 213 is in contact with the main body 404, it provides insulation between the main body 404 and the cover plate 212, preventing electrical conductivity between them and improving the safety of the battery pack 1.

[0070] like Figure 9 As shown, in the technical solution of this embodiment, the main body 404 and the through hole 214 are spaced apart along the second direction Y, and the main body 404 is located between two adjacent through holes 214 arranged along the second direction Y.

[0071] For example, the main body 404 and the pole post 211 are spaced apart along the second direction Y, and the main body 404 is located between two adjacent 211s arranged along the second direction Y.

[0072] In other words, the dimension of the main body 404 along the second direction Y can be smaller than the spacing between two adjacent through holes 214 provided along the second direction Y. This can more effectively prevent the main body 404 from contacting the cover plate 212, prevent electrical conduction between the main body 404 and the battery cell 210, and improve the safety of the battery pack 1.

[0073] like Figures 9-11As shown, in the technical solution of this embodiment, the flexible circuit board 400 further includes a temperature acquisition unit 402 and a voltage acquisition unit 403. Both the temperature acquisition unit 402 and the voltage acquisition unit 403 are connected to the main body 404. The voltage acquisition unit 403 and the temperature acquisition unit 402 are located on both sides of the main body 404 along the second direction Y. The voltage acquisition unit 403 is electrically connected to the busbar 500, and the temperature acquisition unit 402 is in contact with the cover plate 212.

[0074] Specifically, the voltage acquisition unit 403 is pressed against the terminal post 211 by the base unit 310. The voltage acquisition unit 403 can acquire electrical signals such as voltage and even current of the battery cell 210, which can improve the accuracy of voltage acquisition. The temperature acquisition unit 402 can be connected to the cover plate 212 with exposed through hole 214. The temperature acquisition unit 402 is in direct contact with the cover plate 212, which is usually a metal part with good thermal conductivity, thus improving the accuracy of temperature data acquisition.

[0075] In this way, the flexible circuit board 400 can collect parameter information such as voltage and temperature of the battery pack 200, which is beneficial for monitoring the working status of the battery pack 1 and ensuring the normal operation of the battery pack 1.

[0076] The base 310 is provided with a shielding part, which is located on the temperature acquisition part 402 along the third direction Z. The shielding part can press the temperature acquisition part 402 with insulating materials such as foam blocks. This design can ensure the stability of the temperature acquisition part 402 and improve the accuracy of temperature data acquisition.

[0077] like Figure 3 , Figure 4 , Figure 7 and Figure 8 As shown, in the technical solution of this embodiment, the battery pack 1 also includes a plurality of insulating strips 700. The plurality of insulating strips 700 are spaced apart along the first direction X. The insulating strips 700 extend along the second direction Y. The insulating strips 700 are located on the side of the busbar 500 away from the isolation plate 300 along the third direction Z. The insulating strips 700 are located between the busbar 500 and the cover 102.

[0078] Specifically, the insulating strip 700 can be made of insulating rubber or insulating silicone, etc. Multiple insulating strips 700 can be installed one-to-one on multiple base portions 310. By setting the insulating strip 700, the busbar 500 and the cover 102 can be isolated, preventing contact between the busbar 500 and the cover 102, reducing the probability of the cover 102 becoming charged, and improving the safety of the battery pack 1. Furthermore, the insulating strip 700 can undergo elastic deformation to absorb the pressure between the busbar 500 and the cover 102, reducing the impact of processing errors or assembly errors, and improving production efficiency and yield.

[0079] In the technical solution of this embodiment, the insulating strip 700 is provided with a plurality of anti-slip ribs (not shown in the figure) on the side of the busbar 500 along the third direction Z. The anti-slip ribs protrude along the third direction Z, and the plurality of anti-slip ribs are spaced apart along the second direction Y. The anti-slip ribs are in contact with the busbar 500.

[0080] In this way, the anti-slip ribs can increase the friction between the insulating strip 700 and the busbar 500, which can prevent relative displacement between the insulating strip 700 and the busbar 500, making the positioning between the insulating strip 700 and the busbar 500 more reliable and ensuring the stability of the position of the insulating strip 700.

[0081] In the technical solution of this embodiment, the isolation plate 300 is provided with a positioning post (not shown in the figure) on the side of the flexible circuit board 400 along the third direction Z. The flexible circuit board 400 is provided with a positioning hole through the third direction Z, and the positioning post is inserted into the positioning hole (not shown in the figure).

[0082] By setting positioning posts and positioning holes, the positioning between the isolation plate 300 and the flexible circuit board 400 can be achieved, which is convenient for installation and has high installation accuracy. Furthermore, the isolation plate 300 and the flexible circuit board 400 can be pre-assembled into one unit, and then the isolation plate 300 and the flexible circuit board 400 are installed simultaneously on the battery pack 1, making the installation of the battery pack 1 more convenient and increasing production efficiency.

[0083] For example, the positioning post can be heat-fused, and the top of the heat-fused positioning post is fixed to the side of the flexible circuit board 400 facing away from the isolation plate 300 to fix the relative position between the isolation plate 300 and the flexible circuit board 400.

[0084] According to an embodiment of the present invention, in a second aspect, an electrical device is provided, which includes the aforementioned battery pack 1. The electrical device may be a vehicle or an energy storage device, etc.

[0085] The electrical equipment of this utility model utilizes the aforementioned battery pack 1, which can press the flexible circuit board 400 with the isolation plate 300 and fix the battery pack 200 with the pressure strip 600.

[0086] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A battery pack having intersecting first directions (X), second directions (Y), and a third direction (Z), characterized in that, include: The housing (100) has a receiving cavity (101); A lid (102) is connected to the box body (100) and covers the receiving cavity (101); Multiple battery packs (200) are located in the receiving cavity (101), the multiple battery packs (200) are arranged at intervals along the first direction (X), the battery packs (200) include multiple battery cells (210), the multiple battery cells (210) are arranged along the second direction (Y), and the battery cells (210) include a cover plate (212); An isolation plate (300) is connected to the cover plate (212) along the third direction (Z) and faces the box cover (102) along the third direction (Z). The isolation plate (300) extends along the first direction (X). The isolation plate (300) includes a base part (310) and a connecting part (320). There are multiple base parts (310) and connecting parts (320). Multiple base parts (310) are spaced apart along the first direction (X). The connecting part (320) is connected to two adjacent base parts (310) along the first direction (X). The connecting part (320) is provided with a hollow hole (321) through it along the third direction (Z). At least a part of the cover plate (212) is exposed through the hollow hole (321). A flexible circuit board (400) is connected to the isolation plate (300) and is located between the isolation plate (300) and the cover plate (212) along the third direction (Z); Multiple pressure strips (600) are spaced apart along the first direction (X), the pressure strips (600) extend along the second direction (Y), the pressure strips (600) are located on the side of the connecting portion (320) away from the flexible circuit board (400), and the pressure strips (600) are connected to the cover plate (212).

2. The battery pack according to claim 1, characterized in that, Also includes: Multiple adhesive elements (610) are arranged at intervals along the first direction (X), and each of the multiple adhesive elements (610) corresponds to a multiple pressure strips (600). Each adhesive element (610) includes multiple adhesive portions (611), which are arranged at intervals along the second direction (Y). The adhesive portions (611) are located between all the pressure strips (600) and the cover plate (212) along the third direction (Z), and are respectively connected to all the pressure strips (600) and the cover plate (212).

3. The battery pack according to claim 2, characterized in that, The cover plate (212) has an insulating layer (213) on the side facing the pressure strip (600) along the third direction (Z). The insulating layer (213) has a through hole (214) extending through it along the third direction (Z). A portion of the cover plate (212) is exposed through the through hole (214). The adhesive (610) is connected to the cover plate (212) that is exposed through the through hole (214).

4. The battery pack according to claim 3, characterized in that, The flexible circuit board (400) includes a main body (404) that extends along the first direction (X), and is connected to the insulating layer (213) along the third direction (Z). The main body (404) is located between the insulating layer (213) and the pressure strip (600) along the third direction (Z).

5. The battery pack according to claim 4, characterized in that, The main body (404) and the through hole (214) are spaced apart along the second direction (Y), and the main body (404) is located between two adjacent through holes (214) arranged along the second direction (Y).

6. The battery pack according to claim 1, characterized in that, The cover plate (212) is provided with a terminal post (211), which passes through the base part (310). The battery pack also includes multiple busbars (500), which are located on the side of the base part (310) facing the cover (102), and the multiple busbars (500) are electrically connected to the multiple terminal posts (211) one by one.

7. The battery pack according to claim 6, characterized in that, Also includes: Multiple insulating strips (700) are spaced apart along the first direction (X), the insulating strips (700) extend along the second direction (Y), the insulating strips (700) are located along the third direction (Z) on the side of the busbar (500) away from the isolation plate (300), and the insulating strips (700) are located between the busbar (500) and the box cover (102).

8. The battery pack according to claim 7, characterized in that, The insulating strip (700) has a plurality of anti-slip ribs on the side facing the busbar (500) along the third direction (Z). The anti-slip ribs protrude along the third direction (Z) and are spaced apart along the second direction (Y). The anti-slip ribs are in contact with the busbar (500).

9. The battery pack according to claim 1, characterized in that, The isolation plate (300) has a positioning post on the side facing the flexible circuit board (400) along the third direction (Z), and the flexible circuit board (400) has a positioning hole through it along the third direction (Z), and the positioning post is inserted into the positioning hole.

10. An electrical appliance, characterized in that, Includes the battery pack (1) according to any one of claims 1-9.

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