Battery pack and electric equipment

Abstract

The utility model discloses a battery pack and electric equipment. The battery pack comprises a shell, a battery pack and a battery pack, the plurality of battery cells are arranged in the accommodating space, and a bonding piece is arranged between the plurality of battery cells and the upper cover; and / or a bonding piece is arranged between the plurality of battery cells and the bottom of the tray. And the pre-tightening adjusting assembly selectively drives the extrusion plate to extrude and pre-tighten the plurality of battery cells. Therefore, the pre-tightening adjusting assembly is telescopic in the accommodating space, the pre-tightening adjusting assembly is simple in structure, the pre-tightening principle that the pre-tightening adjusting assembly is adaptive to a plurality of battery cells with different volumes is simple and direct, the bonding pieces are arranged between the plurality of battery cells and the upper cover or between the plurality of battery cells and the bottom of the tray, and only the bonding pieces need to be dismantled, so that the battery cells can be conveniently assembled and disassembled. The shell can be opened by operating the pre-tightening adjusting assembly, and the extrusion force on the plurality of battery cells can be removed by operating the pre-tightening adjusting assembly, so that the plurality of battery cells can be disassembled, and the replacement and maintenance of the plurality of battery cells can be facilitated.

Description

Technical Field

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

[0002] With the development of new energy, the battery-body integration technology, as an important means to improve the energy density of the battery pack to solve the anxiety about the driving range of the whole vehicle, has been vigorously developed. The high integration density has brought great challenges to the disassembly, maintenance, recycling and cascade utilization of the battery pack.

[0003] In the prior art, the disassembly of the battery-body integrated battery pack is mainly manual mechanical violent disassembly. Manual violent disassembly is extremely easy to damage the battery cells, cause liquid leakage, affect the recycling and utilization of the battery cells, and pose a great hidden danger to the safety of operators. In addition, due to the control of the number of parts in the battery-body integrated design, different battery packs with different power levels may share a standard tray, and there will be cavities inside the tray of the low-power battery pack. At present, the cavities mainly adopt metal expansion beams or mica-wrapped insulating materials to pre-tighten the battery cells, and the material process cost is relatively high. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this reason, an object of the utility model is to provide a battery pack which is simple and safe to disassemble and has a relatively low cost.

[0005] The utility model further provides an electrical equipment.

[0006] The battery pack of the vehicle according to the utility model includes: a housing, the housing includes a tray and an upper cover, one side of the tray in a first direction is open, the upper cover is disposed on one side of the tray in the first direction and jointly defines an accommodation space with the tray; a plurality of battery cells, the plurality of battery cells are disposed in the accommodation space, and bonding members are disposed between the plurality of battery cells and the upper cover; and / or bonding members are disposed between the plurality of battery cells and the bottom of the tray. A pre-tightening adjustment assembly, the pre-tightening adjustment assembly is disposed in the accommodation space, the pre-tightening adjustment assembly includes a pre-tightening adjustment component, a connecting plate and a pressing plate, the connecting plate and the pressing plate are respectively disposed on both sides of the pre-tightening adjustment component, the connecting plate is connected to the housing, and the pre-tightening adjustment component can selectively expand and contract in the accommodation space to selectively drive the pressing plate to press and pre-tighten the plurality of battery cells.

[0007] Thus, by making the pre-tightening adjustment assembly retractable in the accommodation space, the pressing plate can press and pre-tighten multiple battery cells with different volumes. The pre-tightening adjustment assembly has a simple structure, and the principle of adapting to the pre-tightening of multiple battery cells with different volumes is simple and direct. Further, an adhesive is provided between the multiple battery cells and the upper cover, or an adhesive is provided between the multiple battery cells and the bottom of the tray. When it is necessary to remove the multiple battery cells from the housing for replacement or repair, only the adhesive needs to be removed, then the housing can be opened, and then by operating the pre-tightening adjustment assembly to remove the pressing force on the multiple battery cells, the removal of the multiple battery cells can be achieved, which can facilitate the replacement and repair of the multiple battery cells.

[0008] In some examples of the present utility model, the multiple battery cells are arranged in the second direction, the pre-tightening adjustment assembly is disposed on one side of the multiple battery cells in the second direction, and the pre-tightening adjustment assembly is retractable in the second direction to drive two adjacent battery cells to be pressed and pre-tightened, wherein the first direction and the second direction are perpendicular to each other.

[0009] In some examples of the present utility model, the pre-tightening adjustment assembly includes an outer tube and an inner tube, the outer tube is sleeved outside the inner tube, the outer tube can move relative to the inner tube in the second direction, one side of the outer tube away from the inner tube is the first side, one side of the inner tube away from the outer tube is the second side, and one of the first side and the second side is provided with the connecting plate, and the other is provided with the pressing plate.

[0010] In some examples of the present utility model, the connecting plate is provided on the first side, and the pressing plate is provided on the second side.

[0011] In some examples of the present utility model, the pre-tightening adjustment assembly further includes a first fastener, a connection hole is provided on the outer tube, and the first fastener passes through the connection hole and selectively presses and fixes the inner tube.

[0012] In some examples of the present utility model, the pre-tightening adjustment assembly includes at least one scissor lift member, the scissor lift member includes two scissor plates, the two scissor plates are cross-arranged and can rotate relative to each other, and the connecting plate and the pressing plate are respectively disposed on both sides of the scissor lift member in the second direction.

[0013] In some examples of the present utility model, the pre-tightening adjustment assembly includes a plurality of scissor lift members, and the plurality of scissor lift members are sequentially connected in the second direction.

[0014] In some examples of the present utility model, the pre-tightening adjustment assembly further includes a limiting rod, one end of the limiting rod is connected to the connecting plate or the pressing plate, and the other end of the limiting rod selectively abuts against and limits the scissor plate in at least one of the scissor lift members.

[0015] In some examples of the present utility model, a first pin is provided on the connecting plate, and a plurality of first through holes are provided on the first pin at intervals in a second direction. A second pin is provided on the pressing plate, and a plurality of second through holes are provided on the second pin at intervals in the second direction. The first pin can move relative to the second pin in the second direction so that one of the plurality of first through holes selectively corresponds to one of the plurality of second through holes and is connected by a second fastener.

[0016] In some examples of the present utility model, a plurality of ratchet grooves arranged along the second direction are provided on the connecting plate, and a rotatable ratchet pawl is provided on the pressing plate. The ratchet pawl selectively abuts against and limits one of the plurality of ratchet grooves.

[0017] In some examples of the present utility model, a slide rail extending in the second direction is provided on the pressing plate, and a slider is provided on the connecting plate. The slider is slidably arranged in the slide rail, and the pressing plate and the connecting plate are selectively connected and fixed.

[0018] In some examples of the present utility model, the connecting plate is adhesively provided on the tray. The thickness of the connecting plate is D1, and the thickness of the pressing plate is D2. D1 and D2 satisfy the relational expression: D1 > 2 mm, D2 > 2 mm.

[0019] In some examples of the present utility model, the adhesive is a magnetic induction structural adhesive, and the magnetic induction structural adhesive is provided between the upper cover and the plurality of battery cells.

[0020] In some examples of the present utility model, the battery pack further includes a lower cold plate. The lower cold plate is provided between the bottom of the tray and the plurality of battery cells. The adhesive is a thermal conductive adhesive, and the thermal conductive adhesive is provided between the lower cold plate and the plurality of battery cells.

[0021] In some examples of the present utility model, the accommodating space includes a first space portion and a second space portion. The plurality of battery cells are arranged in the first space portion. The adhesive and the lower cold plate are both arranged in the first space portion and are respectively located on two sides of the plurality of battery cells in a first direction. The second space portion is located on one side of the first space portion in the first direction. The magnetic induction structural adhesive and the lower cold plate are both spaced from the second space portion, and the pre-tightening adjustment assembly is arranged in the second space portion.

[0022] The electrical equipment according to the embodiment of the present utility model includes: the above-mentioned battery pack.

[0023] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. Brief Description of the Drawings

[0024] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0025] Figure 1 is a schematic diagram of a battery pack according to an embodiment of the present utility model;

[0026] Figure 2 is a schematic diagram of a pre-tightening adjustment assembly according to the first embodiment of the present utility model;

[0027] Figure 3 is a schematic diagram of a pre-tightening adjustment assembly according to the first embodiment of the present utility model;

[0028] Figure 4 is a schematic diagram of a pre-tightening adjustment assembly according to the second embodiment of the present utility model;

[0029] Figure 5 is a schematic diagram of a pre-tightening adjustment assembly according to the third embodiment of the present utility model;

[0030] Figure 6 is a schematic diagram of a pre-tightening adjustment assembly according to the fourth embodiment of the present utility model;

[0031] Figure 7 is a schematic diagram of a pre-tightening adjustment assembly according to the fourth embodiment of the present utility model;

[0032] Figure 8 is a schematic diagram of a pre-tightening adjustment assembly according to the fifth embodiment of the present utility model.

[0033] Reference Numerals:

[0034] 100, battery pack;

[0035] 10, housing; 101, accommodation space; 11, tray; 12, upper cover; 13, cold plate; 14, thermal conductive adhesive; 15, magnetic induction structural adhesive;

[0036] 20, battery cell;

[0037] 30, pre-tightening adjustment assembly; 31, connecting plate; 32, extrusion plate;

[0038] 40, pre-tightening adjustment component; 41, outer tube; 42, inner tube; 43, first fastener; 44, scissor lift member; 441, scissor plate; 45, limiting rod; 46, first pin; 461, first through hole; 47, second pin; 471, second through hole; 48, second fastener; 49, ratchet pawl; 50, ratchet groove; 51, slide rail; 52, slider. Detailed Description of the Preferred Embodiments

[0039] Embodiments of the present utility model will be described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Embodiments of the present utility model will be described in detail below.

[0040] Reference will be made below Figures 1 - 8 to describe a battery pack 100 according to an embodiment of the present utility model. The battery pack 100 can be applied to electrical equipment, including but not limited to vehicles and ships, etc.

[0041] In conjunction with Figures 1 - 8 as shown, the battery pack 100 according to the present utility model mainly includes: a housing 10, a plurality of battery cells 20, and a pre-tightening adjustment assembly 30. Among them, a receiving space 101 is provided in the housing 10, the plurality of battery cells 20 are arranged in the receiving space 101, the pre-tightening adjustment assembly 30 is arranged in the receiving space 101, the pre-tightening adjustment assembly 30 includes a pre-tightening adjustment component 40, a connecting plate 31, and a pressing plate 32. The connecting plate 31 and the pressing plate 32 are respectively arranged on both sides of the pre-tightening adjustment component 40. The connecting plate 31 is connected to the housing 10. The pre-tightening adjustment component 40 can be selectively telescoped in the receiving space 101 to selectively drive the pressing plate 32 to press and pre-tighten the plurality of battery cells 20.

[0042] Specifically, the housing 10 includes a tray 11 and an upper cover 12. One side of the tray 11 in the first direction is open, and the upper cover 12 is covered on one side of the tray 11 in the first direction and jointly defines the receiving space 101 with the tray 11. A detachable bonding member is provided between the plurality of battery cells 20 and the upper cover 12, and / or a detachable bonding member is provided between the plurality of battery cells 20 and the bottom of the tray 11. For the control of the number of components, different battery packs 100 with different power may share a standard tray 11. Therefore, after the plurality of battery cells 20 with different volumes are arranged in the receiving space 101, the areas of the receiving space 101 occupied by the plurality of battery cells 20 are different. In a low-power battery pack 100, that is, when the total volume of the plurality of battery cells 20 is relatively small, there will be a cavity inside the receiving space 101. In the prior art, a metal expansion beam or a mica-wrapped insulator is used to pre-tighten the battery cells 20. This not only increases the cost of the battery pack 100, but also makes it inconvenient to operate when disassembling the plurality of battery cells 20 from the receiving space 101, and the battery cells 20 are easily damaged.

[0043] In addition, by providing a detachable bonding member between the plurality of battery cells 20 and the upper cover 12, and / or a detachable bonding member between the plurality of battery cells 20 and the bottom of the tray 11, it is convenient to disassemble the housing 10, so that it is convenient to inspect and repair the battery cells 20 and related components inside the housing 10.

[0044] Therefore, in the present application, by disposing the pre-tightening adjustment assembly 30 in the accommodation space 101, the pre-tightening adjustment assembly 30 includes a pre-tightening adjustment component 40, a connecting plate 31, and a pressing plate 32. The connecting plate 31 and the pressing plate 32 are respectively disposed on both sides of the pre-tightening adjustment component 40, and the connecting plate 31 is connected to the housing 10, which can prevent the pre-tightening adjustment assembly 30 from sliding in the accommodation space 101 due to vibration. The pressing plate 32 is disposed opposite to a plurality of battery cells 20. The pre-tightening adjustment component 40 can selectively expand and contract according to the total volume of the plurality of battery cells 20, thereby driving the pressing plate 32 to selectively press the plurality of battery cells 20, so that the gap between two adjacent battery cells 20 among the plurality of battery cells 20 becomes smaller and they will not move relative to each other. This can not only facilitate the arrangement of the plurality of battery cells 20 in the accommodation space 101, but also improve the setting stability and reliability of the plurality of battery cells 20 in the accommodation space 101.

[0045] It should be noted that the connecting plate 31 is adhesively bonded to the inner side of the housing 10. The best material for the connecting plate 31 is a steel structure to facilitate firm bonding, or it can also be a composite structure to reduce weight and achieve lightweight. The best material for the pressing plate 32 is a composite structure to facilitate insulation from the battery cells 20, or it can also be a composite structure of steel or aluminum and a composite material to increase stiffness and reduce the risk of deformation of the battery cells 20 due to expansion.

[0046] Furthermore, the material thickness of the pressing plate 32 and the connecting plate 31 is preferably more than 2 mm to reduce the risk of deformation. The intermediate pre-tightening adjustment component 40 can be made of metal materials such as aluminum alloy and steel, or lightweight materials such as composites.

[0047] In addition, the tray 11 and the upper cover 12 of the present utility model are connected and fixed through an adhesive. This can facilitate the disassembly of the upper cover 12 from the tray 11. In some embodiments of the present utility model, the adhesive can be a magnetic induction structural adhesive 15. Connected and fixed through the magnetic induction structural adhesive 15, when the battery pack 100 of the present utility model needs to be repaired or the battery cells 20 are recycled, an electromagnetic device is used to apply a variable-frequency magnetic field outside the upper cover 12 to cause the magnetic induction structural adhesive 15 to generate intense heat in a short time and quickly heat up to more than 200 °C, and the strength drops sharply. With a slight force, the upper cover 12 can be opened. Then, by controlling the contraction of the pre-tightening adjustment component 40, the pressing force of the pre-tightening adjustment component 40 on the plurality of battery cells 20 can be reduced, or even the pressing force on the plurality of battery cells 20 can be removed. This can make the gaps between the battery cells 20 of the battery pack 100 larger, and the mutual pressing force between the stacked battery cells 20 disappears, and the battery cells 20 can be easily removed for recycling and secondary use.

[0048] With such a setting, the assembly process of the pre-tightening adjustment assembly 30 is simple, the comprehensive cost is low, the disassembly efficiency is high, which is beneficial to platform design.

[0049] In some embodiments of the present utility model, a lower cold plate 13 is disposed between the bottom of the battery cell 20 and the tray 11, and an adhesive is disposed between the battery cell 20 and the lower cold plate 13. In some embodiments of the present utility model, the adhesive is a thermal conductive adhesive 14, and the thermal conductive adhesive 14 is located between a plurality of battery cells 20 and the lower cold plate 13.

[0050] Combined with Figures 1 - 8 As shown, a plurality of battery cells 20 are arranged in the second direction, and the pre-tightening adjustment assembly 30 is disposed on one side of the plurality of battery cells 20 in the second direction. The pre-tightening adjustment assembly 30 is telescopic in the second direction to drive two adjacent battery cells 20 to be squeezed and pre-tightened, so as to further improve the stability and reliability of the pre-tightening of the pre-tightening adjustment assembly 30 on the plurality of battery cells 20.

[0051] Combined with Figure 1 As shown, the accommodation space 101 includes a first space portion and a second space portion. A plurality of battery cells 20 are disposed in the first space portion. The adhesive and the lower cold plate 13 are both disposed in the first space portion and are respectively located on both sides of the plurality of battery cells 20 in the first direction. The second space portion is located on one side of the first space portion in the first direction. The magnetic induction structural adhesive 15 and the lower cold plate 13 are both spaced apart from the second space portion. The pre-tightening adjustment assembly 30 is disposed in the second space portion. Specifically, by disposing the adhesive and the lower cold plate 13 both in the first space portion and respectively on both sides of the plurality of battery cells 20 in the first direction, the second space portion is located on one side of the first space portion in the first direction, the magnetic induction structural adhesive 15 and the lower cold plate 13 are both spaced apart from the second space portion, and the pre-tightening adjustment assembly 30 is disposed in the second space portion, the space in the accommodation space 101 can be fully utilized to install and fix the plurality of battery cells 20. The setting of the pre-tightening adjustment assembly 40 not only does not need to increase the volume of the accommodation space, but also can make the stability of the installation and fixation of the plurality of battery cells 20 better and the cost lower.

[0052] In some embodiments of the present utility model, combined with Figure 2 and Figure 3As shown, the pre-tightening adjustment assembly 40 includes an outer tube 41, an inner tube 42, and a first fastener 43. The outer tube 41 is sleeved outside the inner tube 42, and the outer tube 41 can move relative to the inner tube 42 in the second direction. One side of the outer tube 41 away from the inner tube 42 is the first side, and one side of the inner tube 42 away from the outer tube 41 is the second side. A connecting plate 31 is provided on one of the first side and the second side, and the pressing plate 32 is provided on the other. A connecting hole is provided on the outer tube 41, and the first fastener 43 passes through the connecting hole and selectively presses and fixes the inner tube 42. Specifically, by sleeving the outer tube 41 outside the inner tube 42 and the outer tube 41 being movable relative to the inner tube 42, the pressing plate 32 can be moved away from the connecting plate 31, close to the plurality of battery cells 20, and press and pre-tighten the plurality of battery cells 20; or the pressing plate 32 can be moved close to the connecting plate 31, away from the plurality of battery cells 20. After the pressing plate 32 reaches the preset position, the inner tube 42 is pressed and fixed by the first fastener 43 passing through the connecting hole, thereby realizing the fixation of the pre-tightening adjustment assembly 40. With such a setting, not only can the stability of the pre-tightening of the plurality of battery cells 20 by the pre-tightening adjustment assembly 30 be ensured, but also it is convenient for the pre-tightening adjustment assembly 30 to remove the pre-tightening force from the plurality of battery cells 20 and perform the operation of disassembling the plurality of battery cells 20.

[0053] In some embodiments of the present invention, the connecting plate 31 is provided on the first side, and the pressing plate 32 is provided on the second side. In some other embodiments of the present invention, the pressing plate 32 is provided on the first side, and the connecting plate 31 is provided on the second side.

[0054] In addition, this can also make the structure of the pre-tightening adjustment assembly 30 simple and direct, and can reduce the cost of the battery pack 100.

[0055] In some other embodiments of the present invention, in combination with Figure 4 As shown, the pre-tightening adjustment assembly 40 includes at least one scissor lift member 44. The scissor lift member 44 includes two scissor plates 441. The two scissor plates 441 are cross-arranged and can rotate relative to each other. The connecting plate 31 and the pressing plate 32 are respectively arranged on both sides of the scissor lift member 44 in the second direction. Specifically, by cross-arranging the two scissor plates 441 and allowing them to rotate relative to each other, when the two scissor plates 441 approach each other, the pressing plate 32 moves away from the connecting plate 31 and approaches the plurality of battery cells 20 to pre-tighten the plurality of battery cells 20. When the two scissor plates 441 move away from each other, the pressing plate 32 moves close to the connecting plate 31 and away from the plurality of battery cells 20 to remove the pre-tightening force from the plurality of battery cells 20. With such a setting, not only can the stability of the pre-tightening of the plurality of battery cells 20 by the pre-tightening adjustment assembly 30 be ensured, but also it is convenient for the pre-tightening adjustment assembly 30 to remove the pre-tightening force from the plurality of battery cells 20 and perform the operation of disassembling the plurality of battery cells 20. In addition, this can also make the structure of the pre-tightening adjustment assembly 30 simple and direct, and can reduce the cost of the battery pack 100.

[0056] In combination withFigure 1 As shown, the pre-tightening adjustment assembly 40 includes a plurality of scissor lift members 44, and the plurality of scissor lift members 44 are sequentially connected in the second direction. Specifically, by setting the scissor lift members 44 to be plural and making the plurality of scissor lift members 44 sequentially connected in the second direction, the performance of the pre-tightening adjustment assembly 40 can be further improved.

[0057] Combined with Figure 4 As shown, the pre-tightening adjustment assembly 40 further includes a limiting rod 45. One end of the limiting rod 45 is connected to the connecting plate 31 or the pressing plate 32, and the other end of the limiting rod 45 selectively abuts and limits against the scissor plate 441 in at least one of the scissor lift members 44. Specifically, by connecting one end of the limiting rod 45 to the connecting plate 31 or the pressing plate 32, after the pressing plate 32 reaches the preset position, the other end of the limiting rod 45 abuts and limits against the scissor plate 441 in at least one of the scissor lift members 44. Before the scissor lift member 44 adjusts the position of the pressing plate 32, it is necessary to release the limit of the other end of the limiting rod 45 from the scissor plate 441 in the scissor lift member 44. In this way, the structural reliability of the pre-tightening adjustment assembly 40 can be further improved.

[0058] In some other embodiments of the present invention, combined with Figure 5 As shown, a first pin 46 is provided on the connecting plate 31, and a plurality of first through holes 461 are provided on the first pin 46 at intervals in the second direction. A second pin 47 is provided on the pressing plate 32, and a plurality of second through holes 471 are provided on the second pin 47 at intervals in the second direction. The first pin 46 can move relative to the second pin 47 in the second direction so that one of the plurality of first through holes 461 selectively corresponds to one of the plurality of second through holes 471 and is connected by a second fastener 48. Specifically, by setting the first pin 46 to be relative to the second pin 47, the pressing plate 32 can be moved closer to or away from the plurality of battery cells 20, so as to press the plurality of battery cells 20 or remove the pressing force on the plurality of battery cells 20. After the pressing plate 32 reaches the preset position, one of the plurality of first through holes 461 on the first pin 46 can be made to correspond to one of the plurality of second through holes 471 on the second pin 47 and be connected by the second fastener 48. With such a setting, not only can the stability of the pre-tightening of the pre-tightening adjustment assembly 30 on the plurality of battery cells 20 be ensured, but also it is convenient for the pre-tightening adjustment assembly 30 to remove the pre-tightening force on the plurality of battery cells 20 and perform the operation of disassembling the plurality of battery cells 20. In addition, this can also make the structure of the pre-tightening adjustment assembly 30 simple and direct, and can reduce the cost of the battery pack 100.

[0059] In some other embodiments of the present invention, combined with Figure 6 and Figure 7As shown, a plurality of ratchet grooves 50 arranged in the second direction are provided on the connecting plate 31, and a rotatable ratchet pawl 49 is provided on the pressing plate 32. The ratchet pawl 49 selectively abuts and limits against one of the plurality of ratchet grooves 50. Specifically, by providing a plurality of ratchet grooves 50 arranged in the second direction on the connecting plate 31, and providing a rotatable ratchet pawl 49 on the pressing plate 32, the ratchet pawl 49 selectively abuts and limits against one of the plurality of ratchet grooves 50. After the pressing plate 32 reaches the preset position, the ratchet pawl 49 can be rotated to achieve the abutting and limiting of the ratchet pawl 49 against one of the plurality of ratchet grooves 50, so as to realize the pressing and pre-tightening of the pressing plate 32 on the plurality of battery cells 20; the rotation of the ratchet pawl 49 can also realize the disconnection of the abutment between the ratchet pawl 49 and the ratchet groove 50. After the disconnection, the position of the pressing plate 32 relative to the plurality of battery cells 20 can be adjusted, so as to remove the pre-tightening force of the pressing force of the pressing plate 32 on the plurality of battery cells 20. Such a setting can not only ensure the stability of the pre-tightening adjustment assembly 30 for pre-tightening the plurality of battery cells 20, but also facilitate the removal of the pre-tightening force of the pre-tightening adjustment assembly 30 on the plurality of battery cells 20 and the operation of disassembling the plurality of battery cells 20. In addition, this can also make the structure of the pre-tightening adjustment assembly 30 simple and direct, and can reduce the cost of the battery pack 100.

[0060] In other embodiments of the present invention, in combination with Figure 8 As shown, a slide rail 51 extending in the second direction is provided on the pressing plate 32, a slider 52 is provided on the connecting plate 31, and the slider 52 is slidably arranged in the slide rail 51. The pressing plate 32 and the connecting plate 31 are selectively connected and fixed. Specifically, by providing a slide rail 51 extending in the second direction on the pressing plate 32, and providing a slider on the connecting plate 31, the slider 52 is slidably arranged in the slide rail 51. By the sliding of the slider 52 relative to the slide rail 51, not only can the position of the pressing plate 32 relative to the plurality of battery cells 20 be adjusted to realize the pressing and pre-tightening of the pressing plate 32 on the plurality of battery cells 20, or remove the pressing and pre-tightening force on the plurality of battery cells 20, but also the adjustment of the position of the pressing plate 32 can be smooth, and the structural design of the pre-tightening adjustment assembly 40 can be optimized.

[0061] The electrical equipment according to the embodiment of the present invention includes: the above-mentioned battery pack 100. Specifically, by applying the above-mentioned battery pack 100 to the electrical equipment, the electrical equipment can be more convenient for maintenance and disassembly, and the maintenance cost of the user can be reduced.

[0062] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 construed as a limitation to the present utility model.

[0063] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0064] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A battery pack, characterized in that: include: A housing, the housing comprising a tray and an upper cover, wherein one side of the tray in a first direction is open, and the upper cover is disposed on one side of the tray in the first direction and defines a receiving space together with the tray; A plurality of battery cells, wherein the plurality of battery cells are arranged in the accommodation space, and an adhesive member is arranged between the plurality of battery cells and the upper cover; and / or an adhesive is provided between the plurality of battery cells and the bottom of the tray; A preload adjustment assembly is arranged in the accommodating space, and the preload adjustment assembly includes a preload adjustment component, a connecting plate and an extrusion plate. The connecting plate and the extrusion plate are respectively arranged on both sides of the preload adjustment component, and the connecting plate is connected to the shell. The preload adjustment component can be selectively retracted and retracted in the accommodating space to selectively drive the extrusion plate to extrude and preload the multiple battery cells.

2. The battery pack according to claim 1, characterized in that: The multiple battery cells are arranged in the second direction, and the pre-tensioning adjustment assembly is arranged on one side of the second direction of the multiple battery cells. The pre-tensioning adjustment assembly is retractable in the second direction to drive two adjacent battery cells to be squeezed and pre-tensioned, wherein the first direction and the second direction are perpendicular to each other.

3. The battery pack according to claim 2, characterized in that: The preload adjustment assembly includes an outer tube and an inner tube, the outer tube is sleeved on the outer side of the inner tube, the outer tube can move in a second direction relative to the inner tube, the side of the outer tube away from the inner tube is a first side, and the side of the inner tube away from the outer tube is a second side, one of the first side and the second side is provided with the connecting plate, and the other is provided with the extrusion plate.

4. The battery pack according to claim 3, characterized in that: The first side is provided with the connecting plate, and the second side is provided with the pressing plate.

5. The battery pack according to claim 3, characterized in that: The preload adjustment assembly also includes a first fastener. A connecting hole is provided on the outer tube. The first fastener passes through the connecting hole and selectively squeezes and fixes the inner tube.

6. The battery pack according to claim 2, characterized in that: The preload adjustment assembly includes at least one scissor lift, which includes two scissor plates. The two scissor plates are cross-arranged and can rotate relatively. The connecting plate and the extrusion plate are respectively arranged on both sides of the second direction of the scissor lift.

7. The battery pack according to claim 6, characterized in that: The preload adjustment assembly includes a plurality of scissor lifts, and the plurality of scissor lifts are sequentially connected in the second direction.

8. The battery pack according to claim 6, characterized in that: The preload adjustment assembly also includes a limit rod, one end of which is connected to the connecting plate or the extrusion plate, and the other end of which is selectively abutted against the scissor plate in at least one of the scissor lifters to limit position.

9. The battery pack according to claim 2, characterized in that: A first latch is provided on the connecting plate, and a plurality of first through-holes spaced apart in a second direction are provided on the first latch; a second latch is provided on the extrusion plate, and a plurality of second through-holes spaced apart in the second direction are provided on the second latch; the first latch can be moved in the second direction relative to the second latch so that one of the plurality of first through-holes selectively corresponds to one of the plurality of second through-holes and is connected by a second fastener.

10. The battery pack according to claim 2, characterized in that: The connecting plate is provided with a plurality of ratchet grooves arranged along the second direction, and the extrusion plate is provided with a rotatable ratchet pawl, and the ratchet pawl selectively abuts against one of the plurality of ratchet grooves to limit position.

11. The battery pack according to claim 2, characterized in that: The extrusion plate is provided with a slide rail extending in a second direction, the connection plate is provided with a slider, the slider is slidably disposed in the slide rail, and the extrusion plate and the connection plate are selectively connected and fixed.

12. The battery pack according to claim 2, characterized in that: The connecting plate is bonded to the tray, the thickness of the connecting plate is D1, the thickness of the extruded plate is D2, and D1 and D2 satisfy the relationship: D1>2mm, D2>2mm.

13. The battery pack according to claim 1, characterized in that: The adhesive member is a magnetic induction structural adhesive, and the magnetic induction structural adhesive is arranged between the upper cover and the plurality of battery cells.

14. The battery pack according to claim 13, characterized in that: It also includes a lower cold plate, which is arranged between the bottom of the tray and the plurality of battery cells. The adhesive is a thermally conductive adhesive, and the thermally conductive adhesive is arranged between the lower cold plate and the plurality of battery cells.

15. The battery pack according to claim 14, characterized in that: The accommodating space includes a first space portion and a second space portion, the plurality of battery cells are arranged in the first space portion, the adhesive and the lower cold plate are both arranged in the first space portion and are respectively located on both sides of the first direction of the plurality of battery cells, the second space portion is located on one side of the first direction of the first space portion, the magnetic induction structural adhesive and the lower cold plate are both spaced apart from the second space portion, and the preload adjustment assembly is arranged in the second space portion.

16. An electrical equipment, characterized in that: include: The battery pack according to any one of claims 1 to 9.

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