Battery pack and electric equipment

Abstract

The utility model provides a battery pack and electric equipment, and relates to the technical field of batteries. The battery pack comprises a tray, a battery cell and a buffer part, the tray is provided with a containing groove, the battery cell is contained in the containing groove, at least part of the buffer part is contained in the containing groove and located between the battery cell and the tray, the buffer part comprises a bearing part and a non-Newtonian fluid buffer body located in the bearing part, and the bearing part seals the non-Newtonian fluid buffer body. According to the battery pack and the electric equipment, the battery pack and the electric equipment meet the structure, so that the buffer piece has flowability, and the fitting area of the buffer piece and the battery cell is increased, so that the protection range of the buffer piece is enlarged, and the impact resistance of the battery cell is enhanced.

Description

Technical Field

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

[0002] When a vehicle's battery pack is hit or scratched, the cells in the battery pack may collide and be damaged, so the battery pack usually has a buffer. Commonly used buffers are composed of buffer cotton and composite fiberglass boards. However, the bonding area between the buffer cotton and the cell is limited, and there may be a gap between the cell surface and the buffer, resulting in a limited protection range of the buffer, and the buffer cannot absorb the impact force at all positions on the cell surface. Utility Model Content

[0003] The utility model aims to provide a battery pack and an electric device, which solve the problem of insufficient fit between a buffer component and a battery core.

[0004] In order to achieve the purpose of the utility model, the utility model provides the following technical solutions:

[0005] In a first aspect, the utility model provides a battery pack, comprising: a tray having a bottom plate and side plates, the bottom plate of the tray and the side plates of the tray enclosing a receiving groove; a battery cell received in the receiving groove, the bottom wall of the receiving groove supporting the battery cell; a buffer member at least partially received in the receiving groove and at least partially located between the battery cell and the tray, the buffer member comprising a carrier and a non-Newtonian fluid buffer body located in the carrier.

[0006] In one embodiment, the carrier includes a packaging component, the packaging component includes a receiving cavity, the non-Newtonian fluid buffer body is received in the receiving cavity, the packaging component seals the non-Newtonian fluid buffer body, and the buffer and the tray are detachably connected.

[0007] In one embodiment, the support member further includes an adsorption member, the adsorption member includes a hole structure, the adsorption member is accommodated in the accommodating cavity, and the non-Newtonian fluid buffer body is accommodated in the hole structure.

[0008] In one embodiment, the battery pack further includes a first stack, which is located in the receiving groove and divides the receiving groove into a first chamber and a second chamber, the battery cell is accommodated in the first chamber, and the buffer is accommodated in the second chamber.

[0009] In one embodiment, the first stack and the tray are detachably connected.

[0010] In one embodiment, there are a plurality of buffer members, and gaps are provided between adjacent buffer members.

[0011] In one embodiment, the buffer member includes a first buffer member, the first buffer member is located between the battery cell and a side wall of the receiving groove; and / or the first buffer member is located between the battery cell and a bottom wall of the receiving groove.

[0012] In one embodiment, the buffer member includes a second buffer member, and the battery pack further includes a cover plate, wherein the cover plate and the second buffer member are both located on one side of the battery cell in a first direction, wherein the first direction is a direction from the bottom wall of the accommodating groove to the battery cell, the cover plate is at least partially accommodated in the accommodating groove and closes the accommodating groove, and the second buffer member is located between the tray and the cover plate.

[0013] In one embodiment, the buffer member includes a third buffer member, and the battery pack also includes a reinforcing plate, the reinforcing plate and the third buffer member are both located on the side of the tray in the opposite direction of the first direction, the reinforcing plate and the tray are connected, and the third buffer member is located between the reinforcing plate and the tray.

[0014] In one embodiment, the battery pack further includes a second stack, the second stack is located between the reinforcing plate and the tray, the second stack and the reinforcing plate enclose a third chamber, and the third buffer is accommodated in the third chamber.

[0015] In a second aspect, the utility model further provides an electrical device, comprising an electrical device and a battery pack as described in any one embodiment of the first aspect, wherein the electrical device is electrically connected to the battery pack.

[0016] The battery pack provided by the utility model includes a tray, a battery cell and a buffer member, the tray is provided with a receiving groove, the battery cell is received in the receiving groove, at least part of the buffer member is received in the receiving groove, at least part of the buffer member is located between the battery cell and the tray, so that after the battery pack is hit, the buffer member located between the battery cell and the tray can absorb the impact force, thereby preventing the battery cell from being damaged under the action of the impact force, thereby achieving the effect of the battery pack protecting the battery cell.

[0017] By making the buffer include a carrier and a non-Newtonian fluid buffer body located in the carrier, the carrier seals the non-Newtonian fluid buffer body, so that the flow range of the non-Newtonian fluid buffer body is limited by the carrier, thereby preventing the non-Newtonian fluid buffer body from flowing around between the tray and the battery cell and affecting the use of the battery cell; when the buffer is subjected to a smaller force, the viscosity of the buffer is lower, the buffer can fit well with the battery cell, and the fitting area between the buffer and the battery cell is increased, thereby increasing the protection range of the battery cell by the buffer, and the buffer can deform to absorb the energy of the force; when the buffer is subjected to a larger force, the viscosity of the buffer increases. In the process of increasing the viscosity of the buffer, the buffer absorbs the impact force and converts it into an increase in the viscosity of the buffer, so that the force transmitted to the battery cell by the buffer is smaller, and the deformation amount is smaller, so that when the battery pack is subjected to a high-energy impact, it can absorb energy and keep its shape unchanged, thereby greatly improving the impact resistance of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 is a schematic structural diagram of a pallet in one embodiment;

[0020] Figure 2 is an exploded view of a battery pack according to an embodiment;

[0021] Figure 3 It is a cross-sectional view of a battery pack and a partial structural schematic diagram of a tray according to an embodiment.

[0022] Description of reference numerals:

[0023] 10-tray, 11-accommodating slot, 12-first stacking member, 111-first chamber, 112-second chamber;

[0024] 20-battery core, 30-buffer, 31-carrier, 311-packaging, 3111-accommodating cavity, 312-adsorbing member, 32-non-Newtonian fluid buffer, 33-first buffer, 34-second buffer, 35-third buffer;

[0025] 41 - reinforcement plate, 42 - cover plate, 43 - second stack, 44 - third chamber. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Unless otherwise defined, all technical and scientific terms used in this utility model have the same meaning as those commonly understood by technicians in the technical field of this utility model. The terms used in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used in this utility model includes any and all combinations of one or more related listed items.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0031] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0032] The utility model embodiment provides a battery pack, see Figure 1 , Figure 2 and Figure 3The battery pack includes a tray 10, a battery cell 20 and a buffer 30. The tray 10 has a bottom plate and a side plate. The bottom plate of the tray 10 and the side plate of the tray 10 enclose a receiving groove 11. The battery cell 20 is received in the receiving groove 11. The bottom wall of the receiving groove 11 supports the battery cell 20. At least part of the buffer 30 is received in the receiving groove 11. At least part of the buffer 30 is located between the battery cell 20 and the tray 10. When the battery pack is hit, the buffer 30 located between the battery cell 20 and the tray 10 can absorb the impact force, thereby preventing the battery cell 20 from being damaged by the impact force, thereby achieving the effect of the battery pack protecting the battery cell 20.

[0033] At least part of the buffer 30 is located between the battery cell 20 and the bottom wall of the tray 10, and / or at least part of the buffer 30 is located between the battery cell 20 and the side wall of the tray 10, so that the protection capability of the bottom and / or sides of the battery pack is enhanced.

[0034] Optionally, there is a gap between the battery cell 20 and the tray 10, and at least a portion of the buffer 30 fills the gap between the battery cell 20 and the tray 10, so that the tray 10 abuts against the battery cell 20 through the buffer 30, which is beneficial to enhancing the structural stability between the battery cell 20 and the tray 10, and at the same time, the buffer 30 absorbs the force before the battery cell 20 is subjected to the impact force, thereby avoiding damage to the battery cell 20 under the action of the impact force, and achieving the effect of protecting the battery cell 20 by the battery pack. Alternatively, both the bottom wall and the side walls of the tray 10 have cavities, and at least part of the buffer 30 is filled in the cavity of one of the bottom wall and the side walls of the tray 10. Both the bottom wall and the side walls of the tray 10 are in contact with the battery cells 20, so that the buffer 30 is accommodated in the bottom wall of the tray 10 and / or the inside of the side walls of the tray 10, thereby enhancing the impact resistance of the tray 10 and preventing the battery cells 20 from being damaged by the impact force, thereby achieving the effect of protecting the battery cells 20 by the battery pack. At the same time, encapsulating the buffer 30 in the bottom wall of the tray 10 and / or the inside of the side walls of the tray 10 is beneficial to reducing the volume of the battery pack and also provides a preset space for setting other structures between the battery cells 20 and the tray 10.

[0035] Part of the buffer 30 may also be partially located outside the receiving groove 11, that is, part of the buffer 30 is located outside the tray 10. The buffer 30 may be located on the outer surface of the bottom plate of the tray 10, the buffer 30 may also be located on the outer surface of the side plate of the tray 10, and the buffer 30 may also be located on the side of the battery cell 20 away from the tray 10, so that the buffer 30 absorbs the impact force outside the tray 10 and provides a preset space for setting other structures between the battery cell 20 and the tray 10.

[0036] The buffer 30 includes a carrier 31 and a non-Newtonian fluid buffer body 32 located in the carrier 31. The carrier 31 seals the non-Newtonian fluid buffer body 32 so that the flow range of the non-Newtonian fluid buffer body 32 is limited by the carrier 31, thereby preventing the non-Newtonian fluid buffer body 32 from flowing around between the tray 10 and the battery cell 20 and affecting the use of the battery cell 20. The non-Newtonian fluid buffer body 32 includes but is not limited to Bingham fluid or Bingham pseudo fluid.

[0037] Due to the characteristic that the shear stress and shear strain rate of the non-Newtonian fluid buffer body 32 cannot always be in a linear relationship, when the buffer 30 is subjected to a small force, the viscosity of the buffer 30 is low and the fluidity of the buffer 30 is strong, so that the buffer 30 can fit well with the battery cell 20, increasing the fitting area between the buffer 30 and the battery cell 20, thereby increasing the protection range of the battery cell 20 by the buffer 30, and the buffer 30 can deform to absorb the energy of the force; when the buffer 30 is subjected to a large force, the viscosity of the buffer 30 increases. In the process of increasing the viscosity of the buffer 30, the buffer 30 absorbs the impact force and converts it into an increase in the viscosity of the buffer 30, so that the force transmitted to the battery cell 20 is small and the deformation is small, thereby preventing the tray 10 from undergoing a large deformation and damaging the battery cell 20 when subjected to a large force, so that when the battery pack is subjected to a high-energy impact, it can absorb energy and maintain its shape, thereby greatly improving the impact resistance of the battery pack. In addition, after absorbing the impact force, the buffer 30 can quickly return to a state with lower viscosity, so that the buffer 30 can absorb the impact force in a shorter recovery time, which is beneficial for the buffer 30 to continuously absorb the impact force. Compared with buffer bodies such as springs and buffer sponges, the non-Newtonian fluid buffer body 32 will not fail due to fatigue, thereby greatly improving the service life of the buffer 30.

[0038] The battery pack provided by the utility model includes a tray 10, a battery cell 20 and a buffer 30. The tray 10 is provided with a receiving groove 11. The battery cell 20 is received in the receiving groove 11. At least part of the buffer 30 is received in the receiving groove 11. At least part of the buffer 30 is located between the battery cell 20 and the tray 10. When the battery pack is hit, the buffer 30 located between the battery cell 20 and the tray 10 can absorb the impact force, thereby preventing the battery cell 20 from being damaged by the impact force, thereby achieving the effect of protecting the battery pack on the battery cell 20.

[0039] By making the buffer 30 include a carrier 31 and a non-Newtonian fluid buffer body 32 located in the carrier 31, the carrier 31 seals the non-Newtonian fluid buffer body 32, so that the flow range of the non-Newtonian fluid buffer body 32 is limited by the carrier 31, thereby preventing the non-Newtonian fluid buffer body 32 from flowing around between the tray 10 and the battery cell 20 and affecting the use of the battery cell 20; when the buffer 30 is subjected to a smaller force, the viscosity of the buffer 30 is lower and the fluidity of the buffer 30 is stronger, so that the buffer 30 can be well fitted with the battery cell 20, increasing the fitting area between the buffer 30 and the battery cell 20, thereby making the battery cell 20 The protection range of the buffer 30 is increased, and the buffer 30 can be deformed to absorb the energy of the force; when the buffer 30 is subjected to a large force, the viscosity of the buffer 30 increases. In the process of increasing the viscosity of the buffer 30, the buffer 30 absorbs the impact force and converts it into an increase in the viscosity of the buffer 30, so that the force transmitted to the battery cell 20 is smaller and the deformation is smaller, thereby preventing the tray 10 from undergoing a large deformation when subjected to a large force and damaging the battery cell 20, so that when the battery pack is subjected to a high-energy impact, it can absorb energy and maintain its shape, thereby greatly improving the impact resistance of the battery pack.

[0040] In one implementation, see Figure 2 The carrier 31 includes a packaging member 311, the packaging member 311 includes a receiving cavity 3111, the non-Newtonian fluid buffer 32 is received in the receiving cavity 3111, and the packaging member 311 seals the non-Newtonian fluid buffer 32, so that the non-Newtonian fluid buffer 32 flows in the receiving cavity 3111, thereby limiting the flow range of the non-Newtonian fluid buffer 32, and preventing the non-Newtonian fluid buffer 32 from directly contacting the battery cell 20 and affecting the use of the battery cell 20. The packaging member 311 includes but is not limited to a high-strength fiber bag, a plastic bag or an aluminum shell.

[0041] The buffer 30 and the tray 10 are detachably connected, that is, the packaging 311 and the tray 10 are detachably connected, so that when the battery pack is subjected to an impact force causing the packaging 311 to rupture, and the non-Newtonian fluid buffer body 32 flows out of the packaging 311, the ruptured packaging 311 can be disassembled from the tray 10 and replaced with the buffer 30 with the complete packaging 311.

[0042] Optionally, the carrier 31 further includes an adsorbent 312, the adsorbent 312 includes a hole structure, the adsorbent 312 is accommodated in the accommodating cavity 3111, and the non-Newtonian fluid buffer 32 is accommodated in the hole structure, so that the hole structure further limits the flow range of the non-Newtonian fluid buffer 32, so that after the battery pack is subjected to the impact force and the package 311 is broken, the hole structure can absorb the non-Newtonian fluid buffer 32, and prevent the non-Newtonian fluid buffer 32 from flowing out of the package 311 in large quantities, flowing between the tray 10 and the battery cell 20 and damaging the battery cell 20. Optionally, the adsorbent 312 is a sponge.

[0043] In one implementation, see Figure 3 The battery pack also includes a first stack 12, which is located in the receiving groove 11 and divides the receiving groove 11 into a first chamber 111 and a second chamber 112. The battery cell 20 is accommodated in the first chamber 111, and the buffer 30 is accommodated in the second chamber 112, so that the buffer 30 is located between the first stack 12 and the inner wall of the receiving groove 11, avoiding direct contact between the buffer 30 and the battery cell 20, so that the buffer 30 and the battery cell 20 are respectively accommodated in different spaces. When the battery pack is subjected to impact force and the packaging member 311 is ruptured, the non-Newtonian fluid buffer 32 flows in the second cavity, the battery cell 20 is in the first cavity, and the first cavity and the second cavity are not connected, thereby avoiding the non-Newtonian fluid buffer 32 flowing to the vicinity of the battery cell 20 and damaging the battery cell 20.

[0044] Optionally, the first stack 12 and the tray 10 are detachably connected, so that the first buffer 33 can be placed in the second cavity by disassembling the first stack 12 and the tray 10, and when the packaging 311 of the first buffer 33 is damaged, the first stack 12 can be disassembled and replaced with the first buffer 33 with the packaging 311 intact.

[0045] In one implementation, see Figure 2 The buffer member 30 includes a first buffer member 33 , and the first buffer member 33 is accommodated in the accommodating groove 11 .

[0046] The first stack 12 and the bottom wall of the receiving groove 11 are connected in an up-and-down stack, and the first buffer 33 is located between the battery cell 20 and the bottom wall of the receiving groove 11, so that the receiving groove 11 is divided into a first chamber 111 and a second chamber 112 stacked in an up-and-down manner, that is, the first stack 12 and the bottom wall of the receiving groove 11 enclose the second chamber 112, and the first stack 12 and the side wall of the receiving groove 11 enclose the first chamber 111, so that the first buffer 33 and the battery cell 20 are stacked in an up-and-down manner, so that the bottom of the battery cell 20 is wrapped by the first buffer 33. When the bottom of the battery pack is scratched or hit, the first buffer 33 is subjected to the impact force before the battery cell 20, and can absorb the force to prevent the battery cell 20 from being impacted by the bottom of the battery pack, thereby improving the impact resistance of the bottom of the battery cell 20.

[0047] And / or, the first stack 12 is connected to the side wall of the receiving groove 11, and the first buffer member 33 is located between the battery cell 20 and the side wall of the receiving groove 11, so that the side of the battery cell 20 is wrapped by the first buffer member 33. When the side of the battery pack is scratched or hit, the buffer member 30 can be subjected to the impact force before the battery cell 20 and absorb the force, thereby preventing the battery cell 20 from being impacted from the side of the battery pack, thereby improving the impact resistance of the side of the battery cell 20. Optionally, the first stack 12 surrounds the battery cell 20 along the circumference of the side wall of the receiving groove 11, and the receiving groove 11 is divided into a first chamber 111 and a second chamber 112 which are stacked inside and outside, that is, the first stack 12 and the side wall of the receiving groove 11 enclose the second chamber 112, and the first stack 12 and the bottom wall of the receiving groove 11 enclose the first chamber 111, so that the first buffer member 33 is arranged around the battery cell 20 along the circumference of the side wall of the receiving groove 11, thereby enhancing the impact resistance of the battery cell 20 in any direction around it.

[0048] In one implementation, see Figure 3 , there are multiple buffers 30, and gaps are provided between adjacent buffers 30. Optionally, there is a gap between the battery cell 20 and the tray 10, and multiple buffers 30 fill the gap between the battery cell 20 and the tray 10, so that the spacing between the multiple buffers 30 reserves space for the connection structure between the battery cell 20 and the tray 10, thereby ensuring that the battery cell 20 is wrapped by the buffer 30 while improving the space utilization of the battery pack; and when the battery pack is subjected to the impact force and causes part of the packaging 311 to be broken, only the broken part of the packaging 311 needs to be replaced, which is conducive to reducing costs.

[0049] Optionally, the battery pack also includes a first stack 12, and a plurality of buffer members 30 are located between the first stack 12 and the inner wall of the accommodating groove 11, so that the spacing distance between the plurality of buffer members 30 increases the reserved space for the deformation of the buffer members 30, thereby avoiding the buffer members 30 from squeezing each other when deformed by force and causing the packaging member 311 to rupture, and when the battery pack is subjected to impact force and causes part of the packaging member 311 to rupture, only the ruptured part of the packaging member 311 needs to be replaced, which is beneficial to reduce costs.

[0050] In one implementation, see Figure 2 The buffer member 30 includes a second buffer member 34, and the battery pack further includes a cover plate 42. The cover plate 42 and the second buffer member 34 are both located at the battery cell 20 in the first direction ( Figure 2 The first direction is the direction from the bottom wall of the accommodating groove 11 to the battery cell 20, that is, the cover plate 42 and the second buffer member 34 are located on the opening side of the accommodating groove 11, and the cover plate 42 and the second buffer member 34 are located on the top of the battery cell 20, so that the impact resistance of the top of the battery cell 20 is enhanced.

[0051] The cover plate 42 is located at the top of the battery pack. The cover plate 42 is at least partially accommodated in the receiving groove 11 and closes the receiving groove 11. The second buffer member 34 is located between the tray 10 and the cover plate 42, so that the battery cell 20 is in a sealed space, which is beneficial to ensure that the battery cell 20 is not affected by the external environment, and when the top of the battery cell 20 is impacted, the second buffer member 34 can absorb the force.

[0052] In one implementation, see Figure 2 The buffer member 30 includes a third buffer member 35, and the battery pack also includes a reinforcing plate 41. The reinforcing plate 41 and the third buffer member 35 are both located on the side of the tray 10 in the opposite direction of the first direction, that is, the reinforcing plate 41 and the second buffer member 34 are located on the side of the tray 10 away from the battery cell 20, and the reinforcing plate 41 and the second buffer member 34 are located at the bottom of the battery cell 20, which further enhances the impact resistance of the bottom of the battery cell 20.

[0053] The reinforcing plate 41 is located at the bottom of the battery pack, the reinforcing plate 41 is connected to the tray 10, and the third buffer member 35 is located between the reinforcing plate 41 and the tray 10, so that the reinforcing plate 41 can also block part of the impact from the bottom of the battery cell 20, and when the bottom of the battery cell 20 is impacted, the third buffer member 35 can absorb the force.

[0054] Optionally, the battery pack also includes a second stack 43, which is located between the reinforcing plate 41 and the tray 10. The second stack 43 and the reinforcing plate 41 enclose a third chamber 44, and the third buffer 35 is accommodated in the third chamber 44, so that the third buffer 35 is in a closed space. When the battery pack is subjected to an impact force that causes the packaging member 311 to rupture, the non-Newtonian fluid buffer body 32 flows in the third chamber, which is conducive to cleaning and replacement of the third buffer 35.

[0055] Optionally, the second stack 43 and the reinforcing plate 41 are detachably connected, so that the third buffer 35 can be placed in the third cavity by disassembling the second stack 43 and the reinforcing plate 41, and when the packaging 311 of the third buffer 35 is damaged, the second stack 43 can be disassembled and replaced with the third buffer 35 with the packaging 311 intact.

[0056] In one implementation, see Figure 2 , the first buffer 33 and the second buffer 34 are at least partially opposite to the battery cell 20, that is, in the first direction, the sum of the projections of the first buffer 33 and the second buffer 34 at least partially overlaps with the projection of the battery cell 20, so that when the bottom and / or top of the battery cell 20 is subjected to impact force, the buffer 30 can be subjected to the impact force before the battery cell 20; and in a direction perpendicular to the first direction, the sum of the projections of the first buffer 33 and the second buffer 34 at least partially overlaps with the projection of the battery cell 20, so that when the side of the battery cell 20 is subjected to impact force, the buffer 30 can be subjected to the impact force before the battery cell 20; thereby improving the impact resistance of the battery cell 20.

[0057] Optionally, the first buffer member 33 and the second buffer member 34 jointly enclose the battery cell 20, that is, in any direction, the sum of the projections of the first buffer member 33 and the second buffer member 34 covers the projection of the battery cell 20, so that the entire surface of the battery cell 20 is protected by the buffer member 30, thereby enhancing the impact resistance of the battery cell 20 in any direction.

[0058] The utility model also provides an electrical device, see Figure 2 and Figure 3 The electrical device includes an electrical appliance and a battery pack according to any one embodiment of the first aspect, and the electrical appliance is electrically connected to the battery pack. Optionally, the electrical device is a vehicle, the electrical appliance is a vehicle electrical appliance, and the battery pack is electrically connected to the vehicle electrical appliance.

[0059] It can be understood that the electrical equipment in this embodiment has the battery pack in the above-mentioned embodiments. Therefore, the electrical equipment in this embodiment has all the technical effects of the battery pack in the above-mentioned embodiments. Since the technical effects of the battery pack have been fully explained in the above-mentioned embodiments, they will not be repeated here.

[0060] In the description of this specification, the description with reference to the terms "embodiment", "specific embodiment", "example" or "specific example" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0061] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A battery pack, characterized in that: include: A tray is provided with a receiving slot; A battery cell, accommodated in the accommodation slot; A buffer, at least partially contained in the receiving groove, at least partially located between the battery cell and the tray, the buffer comprising a carrier and a non-Newtonian fluid buffer body located in the carrier; The reinforcing plate is located on a side of the tray away from the battery core, and part of the buffer is located between the tray and the reinforcing plate.

2. The battery pack according to claim 1, characterized in that: The carrier comprises a packaging component, the packaging component comprises a containing cavity, the non-Newtonian fluid buffer body is contained in the containing cavity, the packaging component seals the non-Newtonian fluid buffer body, and the buffer component and the tray are detachably connected.

3. The battery pack according to claim 2, characterized in that: The support member further comprises an adsorption member, the adsorption member comprises a hole structure, the adsorption member is accommodated in the accommodating cavity, and the non-Newtonian fluid buffer body is accommodated in the hole structure.

4. The battery pack according to any one of claims 1 to 3, characterized in that: The battery pack further includes a first stack, which is located in the receiving groove and divides the receiving groove into a first chamber and a second chamber. The battery cell is received in the first chamber, and the buffer is received in the second chamber.

5. The battery pack according to claim 4, characterized in that: The first stack and the tray are detachably connected.

6. The battery pack according to claim 4, characterized in that: There are multiple buffer members, and gaps are provided between adjacent buffer members.

7. The battery pack according to claim 4, characterized in that: The buffer member includes a first buffer member, the first buffer member is located between the battery core and a side wall of the receiving groove; and / or the first buffer member is located between the battery core and a bottom wall of the receiving groove.

8. The battery pack according to claim 1, wherein: The buffer member includes a second buffer member, and the battery pack also includes a cover plate. The cover plate and the second buffer member are both located on one side of the battery cell in a first direction, and the first direction is the direction from the bottom wall of the accommodating groove to the battery cell. The cover plate is at least partially accommodated in the accommodating groove and closes the accommodating groove. The second buffer member is located between the tray and the cover plate.

9. The battery pack according to claim 1, characterized in that: The buffer member includes a third buffer member, the reinforcing plate is connected to the tray, and the third buffer member is located between the reinforcing plate and the tray.

10. The battery pack according to claim 9, characterized in that: The battery pack further includes a second stack, the second stack is located between the reinforcing plate and the tray, the second stack and the reinforcing plate enclose a third chamber, and the third buffer is accommodated in the third chamber.

11. An electrical device, characterized in that: It comprises an electrical appliance and a battery pack according to any one of claims 1 to 10, wherein the electrical appliance is electrically connected to the battery pack.

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