Battery pack and electric device

Abstract

The utility model relates to the technical field of batteries, and discloses a battery pack and a power utilization device, the battery pack comprises a box body, the box body comprises a bottom plate and a coaming which are encircled to form a containing cavity, the inner side of the bottom plate is provided with a guide groove, the bottom plate comprises a groove bottom and a groove opening, and the side wall of the groove bottom is provided with a groove; the mounting seats are arranged in the accommodating cavity and comprise seat bodies and matching parts, a plurality of mounting positions are formed on the seat bodies, the matching parts are connected with the seat bodies, penetrate through the notches and are inserted into the groove bottoms, and the ends, away from the seat bodies, of the matching parts extend towards the grooves; and the plurality of battery cells are arranged in the accommodating cavity and are positioned in the mounting positions. The mounting seats can be in plug-in fit with the guide grooves through the matching parts of the mounting seats, and after the battery cells are mounted on the mounting seats, the mounting seats are fixed with the corresponding guide grooves in a plug-in manner, so that the battery cells can be fixed without using an adhesive, and through a simple and reliable structure, the battery cells can be conveniently mounted and can be conveniently and quickly dismounted, and the mounting efficiency is improved. And the battery pack has the capability of detaching and maintaining the internal battery cells.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to battery packs and electrical devices. Background Technology

[0002] As new energy vehicles increasingly demand simplicity in battery pack structure and higher assembly efficiency, the arrangement of cells in battery packs is gradually evolving from modular to module-less. Compared to modular solutions, module-less solutions have fewer components and are lighter, effectively reducing the number of internal components and structural complexity.

[0003] Currently, in battery packs with a non-module layout, the cells are generally fixed by adhesive bonding. The bottom of the cell is connected to the bottom of the casing by adhesive. Although this type of battery pack has fewer components, it is usually difficult to disassemble and maintain the cells when the battery pack malfunctions. Disassembling a cell individually can easily damage it, and the disassembly is highly dangerous. The battery pack can only be replaced as a whole, making it difficult to inspect and maintain the battery pack. Utility Model Content

[0004] In view of this, the present invention provides a battery pack and power supply device to solve the problem of difficult inspection and maintenance of existing non-module battery packs.

[0005] In a first aspect, this utility model provides a battery pack, including a housing having a first direction and a second direction perpendicular to the first direction, including a bottom plate and a surrounding plate connecting the edge of the bottom plate, the bottom plate and the surrounding plate together forming a receiving cavity, the bottom plate having a guide groove extending along the first direction on the side facing the receiving cavity; in a cross section perpendicular to the first direction, the guide groove includes a groove bottom that fits against the bottom surface of the guide groove, and a groove opening located on the side of the groove bottom facing away from the bottom surface of the guide groove, the side wall of the groove bottom having a groove extending along the first direction; a plurality of mounting seats, the mounting seats being arranged in the receiving cavity along the second direction and extending along the first direction, the mounting seats including a seat body and a mating part, the side of the seat body facing away from the bottom plate having a plurality of mounting positions formed along the first direction, the mating part connecting to the side of the seat body facing the bottom plate, and the mating part penetrating the groove opening and inserting into the groove bottom, the end of the mating part away from the seat body extending towards the groove; a plurality of battery cells, the battery cells being disposed in the receiving cavity and located at the mounting positions.

[0006] Beneficial effects: The bottom plate of the housing has a guide groove, and the mounting base can be inserted and engaged with the guide groove through its own mating part. After the battery cell is installed into the mounting base, the mounting base is inserted and fixed with the corresponding guide groove, thus realizing the fixing process of the battery cell. No adhesive is needed for fixing. Through a simple and reliable structure, it is not only easy to install the battery cell, but also easy and quick to remove the battery cell. This enables the battery pack to remove and maintain the internal battery cells, effectively solving the problem of difficult inspection and maintenance of existing non-module battery packs.

[0007] In one optional embodiment, each battery cell is provided with an explosion-proof valve on the side near the base plate, and each mounting position has a pressure relief hole on the bottom wall; the pressure relief hole of each mounting position is arranged opposite to the explosion-proof valve of the battery cell corresponding to that mounting position.

[0008] Beneficial effect: When thermal runaway occurs in the battery cell, the internal gas can be released through the pressure relief hole after breaking through the explosion-proof valve, which can prevent excessive pressure inside the battery cell.

[0009] In one alternative embodiment, the mounting base further includes a partition portion disposed on the side of the base body away from the battery cell, and the partition portion is located between two adjacent pressure relief holes.

[0010] Beneficial effects: The baffle can prevent splashing. When the gas breaks through the explosion-proof valve and is discharged through the pressure relief hole, it will first contact the base plate. At this time, the baffle can block the gas splashed in the opposite direction, preventing the high-temperature gas from directly entering the adjacent pressure relief hole and affecting the adjacent cells. This can effectively improve the safety of the battery pack.

[0011] In one alternative embodiment, the top of the seat is provided with a plurality of first enclosure portions at intervals along a first direction, and the top of the seat is also provided with second enclosure portions on both sides in a second direction, and adjacent first enclosure portions and adjacent second enclosure portions together form an installation position.

[0012] Beneficial effects: This type of mounting position can effectively limit the movement of the battery cell, preventing it from moving arbitrarily along the first or second direction, and also separating adjacent battery cells to prevent them from contacting each other.

[0013] In one alternative embodiment, the base plate includes a plate body and a plurality of guide rails extending along a first direction. The plurality of guide rails are spaced apart on the top surface of the plate body along a second direction, and two adjacent guide rails and the top surface of the plate body together form a guide groove.

[0014] Beneficial effects: The guide groove is simple and reliable in form, and adjacent guide grooves can share a guide rail, which can effectively reduce the complexity of the structure and improve the space utilization rate.

[0015] In one optional embodiment, the guide rail has grooves on both sides and a support surface on the top. The mating part includes a first mating part and a second mating part that are spaced apart along a second direction. The first mating part and the second mating part are bent toward the groove on their respective sides and are inserted into the groove. The bottom surface of the seat abuts against the support surface.

[0016] Beneficial effects: This type of guide rail and mating part are interlocked, with the groove acting as a limit and constraint, and the support surface acting as a support for the base body, which can improve the stability of the mounting base after assembly and reduce the vibration of the mounting base.

[0017] In one alternative embodiment, a shroud located at at least one end of the base plate in a first direction is detachably connected to the base plate by fastening components.

[0018] Beneficial effects: Since the enclosure at at least one end of the base plate in the first direction is detachably connected to the base plate, the mounting base can be pulled out from between the guide rails or inserted between the guide rails by removing the enclosure, which can further improve the assembly convenience of the battery pack.

[0019] In one alternative embodiment, the mounting base further includes an end plate, which is detachably connected to both ends of the base body in a first direction and is disposed on the side of the base body opposite to the base plate.

[0020] Beneficial effect: After the battery cell on the corresponding mounting base is assembled, the end plate is installed on the side of the base body away from the bottom plate. This clamps and fixes the battery cell on the mounting base, preventing the battery cell from loosening and falling off when the mounting base is installed or removed as a whole.

[0021] In one alternative implementation, the mounting position is bonded to the corresponding battery cell using an adhesive.

[0022] Beneficial effects: The connection method is simple and reliable. When the battery cell needs to be inspected and maintained, the mounting bracket can be removed and the battery cell can be separated individually. Compared with all the battery cells being glued to the base plate, the separation process is more convenient and quick, reducing the difficulty of battery cell disassembly.

[0023] Secondly, this utility model also provides an electrical device, which includes: the aforementioned battery pack; a plurality of battery cells disposed in the mounting position of the battery pack mounting base; and a cover plate disposed on the top of the battery pack housing. Attached Figure Description

[0024] 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.

[0025] Figure 1 This is an exploded view of a battery cell housing device after assembly, according to an embodiment of the present invention.

[0026] Figure 2 for Figure 1 The diagram shows a three-dimensional schematic of the battery cell housing and the battery cell assembly process.

[0027] Figure 3 for Figure 1 A three-dimensional schematic diagram of the housing of the battery cell housing shown;

[0028] Figure 4 for Figure 3 The front view of the housing of the battery cell housing shown;

[0029] Figure 5 for Figure 1 A three-dimensional schematic diagram of the bottom of the mounting base of the battery cell housing shown;

[0030] Figure 6 for Figure 5 A three-dimensional schematic diagram of the mounting bracket shown, assuming the battery cell is not displayed.

[0031] Figure 7 for Figure 6 A three-dimensional schematic diagram of the mounting base and mating parts shown.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Box body; 101. Base plate; 1011. Guide groove; 10111. Bottom surface; 10112. Groove bottom; 10113. Groove opening; 1012. Plate; 1013. Guide rail; 10131. Groove; 10132. Support surface; 102. Enclosure plate; 103. Receiving cavity;

[0034] 2. Mounting base; 201. Base body; 2011. Mounting position; 2012. Pressure relief hole; 2013. First enclosure part; 2014. Second enclosure part; 202. Mating part; 2021. First mating part; 2022. Second mating part; 203. Partition part; 204. End plate; 205. Connector; 206. Heat insulation plate;

[0035] 3. Fastening components; 4. Battery cell; 5. Cover plate;

[0036] X, first direction; Y, second direction; Z, third direction. Detailed Implementation

[0037] 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.

[0038] The following is combined Figures 1 to 6 The following describes embodiments of the present invention.

[0039] According to an embodiment of the present invention, in one aspect, a battery pack is provided, comprising:

[0040] The housing 1 has a first direction X and a second direction Y perpendicular to the first direction X, including a bottom plate 101 and a surrounding plate 102 connecting the edge of the bottom plate 101. The bottom plate 101 and the surrounding plate 102 together form a receiving cavity 103. The bottom plate 101 has a guide groove 1011 extending along the first direction X on the side facing the receiving cavity 103.

[0041] In a cross section perpendicular to the first direction X, the guide groove 1011 includes a groove bottom 10112 that fits the bottom surface 10111 of the guide groove 1011, and a groove opening 10113 located on the side of the groove bottom 10112 facing away from the bottom surface 10111 of the guide groove 1011. The side wall of the groove bottom 10112 has a groove 10131 extending along the first direction X.

[0042] Multiple mounting seats 2 are arranged in the receiving cavity 103 along the second direction Y and extend along the first direction X. Each mounting seat 2 includes a seat body 201 and a mating part 202. Multiple mounting positions 2011 are formed on the side of the seat body 201 facing away from the bottom plate 101 along the first direction X. The mating part 202 connects to the side of the seat body 201 facing the bottom plate 101, and the mating part 202 passes through the slot 10113 and is inserted into the bottom of the slot 10112. The end of the mating part 202 away from the seat body 201 extends toward the groove 10131.

[0043] Multiple battery cells 4 are disposed within the receiving cavity 103 and located at the mounting position 2011.

[0044] The battery pack using this embodiment has a guide groove 1011 on the bottom plate 101 of the housing 1. The mounting base 2 can be inserted and engaged with the guide groove 1011 through its own mating part 202. After the battery cell 4 is installed on the mounting base 2, the mounting base 2 is inserted and fixed with the corresponding guide groove 1011, thus realizing the fixing process of the battery cell 4. No adhesive is needed for fixing. Through a simple and reliable structure, it is easy to install the battery cell 4 and also makes it easy and quick to remove the battery cell 4. This enables the battery pack to remove and maintain the internal battery cell 4, effectively solving the problem of difficult maintenance of existing moduleless battery packs.

[0045] It should be noted that, in this embodiment, the first direction X refers to Figure 2 The middle arrow points to the direction of "X", and the second direction, Y, refers to... Figure 2 The direction indicated by the middle arrow "Y" is the third direction Z. Figure 2 The direction of "Z" indicated by the middle arrow is perpendicular to each other in the first direction X, the second direction Y, and the third direction Z. It should be understood that the introduction of the first direction X, the second direction Y, and the third direction Z is merely for the convenience of describing spatial relationships and should not be construed as limiting the scope of the embodiments of this application. Therefore, the perpendicular relationship between the first direction X, the second direction Y, and the third direction Z can be interpreted, depending on the actual technical scenario, as the first direction X, the second direction Y, and the third direction Z representing three mutually perpendicular directions in three-dimensional space, or reasonably interpreted as a nearly perpendicular relationship between the first direction X, the second direction Y, and the third direction Z, for example, the included angles between the first direction X, the second direction Y, and the third direction Z are all within the range of 85°-95°… Any technical solution that conforms to the spirit of this utility model or achieves the technical effects described in this utility model can be considered to fall within the scope defined by the appended claims.

[0046] Specifically, there are no restrictions on the specifications and dimensions of the base plate 101 and the surrounding plate 102, which can be selected according to the specifications and dimensions of the battery pack; there are no restrictions on the number of mounting positions 2011 on a single base 201, which can be two, three or more, and can be flexibly selected according to the needs.

[0047] In addition, there is no limitation on the number of guide grooves 1011 and the number of mounting seats 2 in the housing 1. Multiple mounting seats 2 can be provided in one guide groove 1011, or multiple guide grooves 1011 can be matched with multiple mounting seats 2, or multiple guide grooves 1011 can be provided in each guide groove 1011. The setting method and matching method can be flexibly selected according to the requirements.

[0048] In one possible implementation, such as Figure 5 and Figure 7 As shown, each battery cell 4 is equipped with an explosion-proof valve on the side near the base plate 101, and each mounting position 2011 has a pressure relief hole 2012 on its bottom wall. The pressure relief hole 2012 of each mounting position 2011 is set opposite to the explosion-proof valve of the battery cell 4 corresponding to that mounting position 2011. When the battery cell 4 experiences thermal runaway, the internal gas can be discharged outward through the pressure relief hole 2012 after breaking through the explosion-proof valve, which can prevent excessive pressure inside the battery cell 4.

[0049] Specifically, the form of the pressure relief hole 2012 is not limited and can be as follows: Figure 5 and Figure 7 The structure shown can be a single large hole, or it can be a structure in which multiple smaller holes are spaced apart at the position of the corresponding explosion-proof valve.

[0050] In one possible implementation, the mounting base 2 further includes a partition 203, which is disposed on the side of the base body 201 away from the battery cell 4 and is located between two adjacent pressure relief holes 2012. The partition 203 can prevent splashing. When the gas breaks through the explosion-proof valve and is discharged through the pressure relief hole 2012, it will first contact the base plate 101. At this time, the partition 203 can block the gas splashed in the opposite direction, preventing the high-temperature gas from directly entering the adjacent pressure relief hole 2012 and affecting the adjacent battery cell 4, which can effectively improve the safety of the battery pack. As a preferred embodiment, a gap is provided between the partition 203 and the base plate 101. That is, the end of the partition 203 away from the seat 201 is not sealed with the base plate 101. The space enclosed between a single seat 201 and the base plate 101 is connected. When a single battery cell 4 or a portion of the battery cells 4 thermally run away, a larger space can be used to accommodate the high-temperature and high-pressure gas generated by the thermally runaway battery cell 4, disperse the energy generated by the thermal runaway, avoid the energy from concentrating on adjacent battery cells 4, and prevent adjacent battery cells 4 from having a chain reaction and successively exploding.

[0051] Specifically, such as Figure 5 As shown, the mounting base 2 extends along the first direction X. After installation, the mounting base 2 and the base plate 101 enclose each other to form an exhaust channel. The partition part 203 is spaced in the exhaust channel. The exhaust channel and the partition part 203 work together to play a significant role in thermal runaway protection. It can not only adapt to the thermoelectric separation design, but the partition part 203 can also ensure that the battery cell 4 can vent in a directional manner after thermal runaway.

[0052] In one possible implementation, such as Figure 7As shown, the top of the base 201 is provided with a plurality of first enclosure portions 2013 at intervals along the first direction X. The top of the base 201 is also provided with second enclosure portions 2014 on both sides in the second direction Y. Adjacent first enclosure portions 2013 and adjacent second enclosure portions 2014 together form a mounting position 2011. This type of mounting position 2011 can effectively limit the battery cell 4, which can prevent the battery cell 4 from moving arbitrarily along the first direction X or the second direction Y, and can also separate adjacent battery cells 4 to prevent adjacent battery cells 4 from contacting each other.

[0053] Specifically, such as Figure 7 As shown, the first enclosure 2013 and the second enclosure 2014 together form a plurality of mounting positions 2011. The plurality of mounting positions 2011 are arranged at intervals along the first direction X, which makes the positioning method of the battery cell 4 simple and reliable.

[0054] In addition, the length and thickness of the first enclosure 2013 and the second enclosure 2014 are not limited and can be selected according to the size of the battery cell 4.

[0055] In one possible implementation, such as Figure 3 As shown, the base plate 101 includes a plate body 1012 and a plurality of guide rails 1013 extending along the first direction X. The plurality of guide rails 1013 are spaced apart on the top surface of the plate body 1012 along the second direction Y. Two adjacent guide rails 1013 and the top surface of the plate body 1012 together form a guide groove 1011. The guide groove 1011 has a simple and reliable form. Adjacent guide grooves 1011 can share a guide rail 1013, which can effectively reduce the complexity of the structure and improve the space utilization rate.

[0056] It is understood that, as an alternative implementation, the guide rails 1013 can also be provided in pairs, with each pair of guide rails 1013 and the top surface of the plate 1012 respectively forming a guide groove 1011.

[0057] Specifically, such as Figure 3 As shown, the cross-section of the guide rail 1013 is T-shaped and symmetrical along the plane containing the first direction X and the third direction Z. This type of guide rail 1013 is more balanced in terms of force, and its assembly and force conditions with the adjacent mounting base 2 tend to be consistent, which can improve the reliability of the guide rail 1013.

[0058] In one possible implementation, the guide rail 1013 has grooves 10131 on both sides and a support surface 10132 on the top. The mating part 202 includes a first mating part 2021 and a second mating part 2022 spaced apart along the second direction Y. The first mating part 2021 and the second mating part 2022 are bent toward the groove 10131 on their respective sides and are inserted into the groove 10131. The bottom surface of the seat 201 abuts against the support surface 10132. In this form, the guide rail 1013 and the mating part 202 are inserted into each other. The groove 10131 plays a role in limiting and constraining, and the support surface 10132 can play a role in supporting the seat 201. This can improve the stability of the mounting seat 2 after assembly and reduce the vibration of the mounting seat 2.

[0059] Specifically, such as Figure 3 and Figure 4 As shown, the first mating part 2021 and the second mating part 2022 are bent in a direction away from each other. Only the structure of rectangular grooves 10131 on both sides of the guide rail 1013 is shown. It can be understood that, as an alternative embodiment, since the first mating part 2021 and the second mating part 2022 are respectively inserted into the grooves 10131, the grooves 10131 can also be trapezoidal, L-shaped, or other shapes, as long as they can be stably inserted into the first mating part 2021 and the second mating part 2022.

[0060] In one possible implementation, such as Figure 3 As shown, the enclosure 102 located at at least one end of the base plate 101 in the first direction X is detachably connected to the base plate 101 via the fastening component 3. Since the enclosure 102 located at at least one end of the base plate 101 in the first direction X is detachably connected to the base plate 101, the mounting base 2 can be pulled out from between the guide rails 1013 or inserted between the guide rails 1013 after the enclosure 102 is removed, which can further improve the assembly convenience of the battery pack.

[0061] Specifically, there is no limitation on the detachable connection method of the enclosure 102. It can be assembled and connected by fastening components such as bolts and screws, or it can be connected by insertion through its own structure such as slots.

[0062] In one possible implementation, the mounting base 2 further includes an end plate 204, which is detachably connected to both ends of the base body 201 in the first direction X. The end plate 204 is located on the side of the base body 201 away from the base plate 101. When the end plate 204 is installed on the side of both ends of the base body 201 away from the base plate 101, the battery cell 4 on the mounting base 2 can be clamped and fixed, which can prevent the battery cell 4 from loosening and falling off when the mounting base 2 is installed or removed as a whole.

[0063] Specifically, such as Figure 6As shown, the end plate 204 is detachably connected to the mounting base 2 via the connector 205. The end plate 204 is provided with a through hole extending in the third direction Z, and the mounting base 2 is provided with a mating hole extending in the third direction Z. Preferably, the connector 205 is a bolt, which passes through the through hole and connects to the mating hole in sequence, thereby detachably connecting the connector 205 and the mounting base 2.

[0064] Furthermore, such as Figure 5 As shown in Figure 6, the mounting base 2 also includes a heat insulation plate 206. A heat insulation plate 206 is provided between two adjacent battery cells 4 on the mounting base 2, which can not only provide heat insulation, but also improve the insulation reliability between two adjacent battery cells 4.

[0065] In one possible implementation, the mounting position 2011 is bonded to the corresponding battery cell 4 with an adhesive. The connection method is simple and reliable. When the battery cell 4 needs to be inspected and maintained, the mounting base 2 can be removed and the battery cell 4 can be separated individually. Compared with all the battery cells 4 being bonded to the base plate 101, the separation step can be performed more conveniently and quickly, reducing the difficulty of disassembling the battery cell 4.

[0066] It is understandable that, as an alternative implementation, the battery cell 4 can also be fixed to the mounting base 2 by means of independent connectors such as straps.

[0067] According to an embodiment of the present invention, another aspect provides an electrical device comprising: a battery pack, a plurality of battery cells 4, and a cover plate 5, wherein the plurality of battery cells 4 are disposed in the mounting position 2011 of the mounting base 2 of the battery pack, and the cover plate 5 is disposed on the top of the housing 1 of the battery pack.

[0068] 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, characterized in that, include: The housing (1) has a first direction (X) and a second direction (Y) perpendicular to the first direction (X), including a bottom plate (101) and a surrounding plate (102) connecting the edge of the bottom plate (101), the bottom plate (101) and the surrounding plate (102) together form a receiving cavity (103), and the bottom plate (101) has a guide groove (1011) extending along the first direction (X) on the side facing the receiving cavity (103); In a cross section perpendicular to the first direction (X), the guide groove (1011) includes a groove bottom (10112) that conforms to the bottom surface (10111) of the guide groove (10111), and a groove opening (10113) located on the side of the groove bottom (10112) facing away from the bottom surface (10111) of the guide groove (10111), and the sidewall of the groove bottom (10112) has a groove (10131) extending along the first direction (X); Multiple mounting bases (2) are arranged in the receiving cavity (103) along the second direction (Y) and extend along the first direction (X). Each mounting base (2) includes a base body (201) and a mating part (202). Multiple mounting positions (2011) are formed on the side of the base body (201) facing away from the base plate (101) along the first direction (X). The mating part (202) connects to the side of the base body (201) facing the base plate (101) and penetrates the slot (10113) and is inserted into the bottom of the slot (10112). The end of the mating part (202) away from the base body (201) extends toward the groove (10131). Multiple battery cells (4) are disposed within the receiving cavity (103) and located at the mounting position (2011).

2. The battery pack according to claim 1, characterized in that, Each of the battery cells (4) is provided with an explosion-proof valve on the side near the base plate (101), and each of the mounting positions (2011) has a pressure relief hole (2012) on its bottom wall; the pressure relief hole (2012) of each mounting position (2011) is arranged opposite to the explosion-proof valve of the battery cell (4) corresponding to that mounting position (2011).

3. The battery pack according to claim 2, characterized in that, The mounting base (2) further includes a partition (203), which is disposed on the side of the base body (201) away from the battery cell (4) and is located between two adjacent pressure relief holes (2012).

4. The battery pack according to any one of claims 1 to 3, characterized in that, The top of the seat (201) is provided with a plurality of first enclosure portions (2013) spaced apart along the first direction (X), and the top of the seat (201) is also provided with second enclosure portions (2014) on both sides in the second direction (Y). The adjacent first enclosure portions (2013) and the adjacent second enclosure portions (2014) together form the mounting position (2011).

5. The battery pack according to any one of claims 1 to 3, characterized in that, The base plate (101) includes a plate body (1012) and a plurality of guide rails (1013) extending along the first direction (X). The plurality of guide rails (1013) are spaced apart along the second direction (Y) on the top surface of the plate body (1012). The top surface of two adjacent guide rails (1013) and the plate body (1012) together form the guide groove (1011).

6. The battery pack according to claim 5, characterized in that, The guide rail (1013) has grooves (10131) on both sides and a support surface (10132) on the top. The mating part (202) includes a first mating part (2021) and a second mating part (2022) spaced apart along the second direction (Y). The first mating part (2021) and the second mating part (2022) are respectively bent toward the groove (10131) on their respective sides and are inserted into the groove (10131). The bottom surface of the seat (201) abuts against the support surface (10132).

7. The battery pack according to any one of claims 1 to 3, characterized in that, The enclosure (102) located at at least one end of the base plate (101) in the first direction (X) is detachably connected to the base plate (101) by fastening member (3).

8. The battery pack according to any one of claims 1 to 3, characterized in that, The mounting base (2) further includes an end plate (204), which is detachably connected to both ends of the base body (201) in the first direction (X), and the end plate (204) is disposed on the side of the base body (201) away from the base plate (101).

9. The battery pack according to any one of claims 1 to 3, characterized in that, The mounting position (2011) is bonded to the corresponding battery cell (4) by an adhesive.

10. An electrical device, characterized in that, include: The battery pack according to any one of claims 1 to 9; Multiple battery cells (4) are disposed in the mounting positions (2011) of the mounting base (2) of the battery pack; A cover plate (5) is disposed on the top of the housing (1) of the battery pack.

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