Battery pack and vehicle

Abstract

The utility model provides a battery pack and a vehicle, and relates to the technical field of vehicles. The battery pack comprises a shell which comprises a bottom shell and a top cover, the top cover covers one end, in a first direction, of the bottom shell, and the top cover and the bottom shell jointly define a containing cavity; the battery cell module is arranged in the accommodating cavity; and the buffer supporting piece is arranged between the battery cell module and the top cover in a supporting manner so as to buffer the pressure of the shell on the battery cell module. According to the battery pack and the vehicle provided by the invention, the buffer supporting piece is arranged between the top cover and the battery cell module, when the top cover forms the floor of the vehicle, the pressure borne by the top cover can be transmitted to the buffer supporting piece, and the buffer supporting piece can absorb part of force and transmit the force to the part, with higher structural strength, of the battery cell module, so that the deformation of the top cover is prevented; therefore, the cell module is prevented from being extruded, and the safe and stable operation of the battery pack is ensured.

Description

Technical Field

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

[0002] In order to reduce the weight of the vehicle and the volume occupied by the battery pack, some vehicles integrate the battery pack into the vehicle, with the battery pack cover acting as the vehicle's floor, bearing the weight of the entire vehicle while also being stepped on by vehicle users.

[0003] However, the existing battery pack top cover has low structural strength and is easily deformed when stepped on for a long time, thereby squeezing the battery cells in the battery pack, posing a safety hazard. Utility Model Content

[0004] In view of the above problems, the present invention provides a battery pack and a vehicle to solve the problem that the existing battery pack top cover has low structural strength when used as a vehicle floor, and is prone to deformation and squeezing of battery cells, posing a safety hazard.

[0005] In one aspect, the present application provides a battery pack, comprising:

[0006] The housing comprises a bottom shell and a top cover, wherein the top cover is sealed to one end of the bottom shell along the first direction and defines a receiving cavity together with the bottom shell;

[0007] The battery cell module is arranged in the accommodating cavity;

[0008] The buffer support is arranged between the battery cell module and the top cover to buffer the pressure of the shell on the battery cell module.

[0009] In one possible implementation, the battery pack provided in the present application includes a battery cell module comprising a plurality of battery cells, each battery cell having an electrode end facing a top cover along a first direction, the electrode end being provided with a pole, and the buffer support covering the pole.

[0010] In one possible implementation, the battery pack provided in this application further includes an explosion-proof valve at the electrode end, which is spaced apart from the electrode.

[0011] The buffer support is staggered with the explosion-proof valve.

[0012] In one possible implementation, the battery pack provided by the present application has two poles, which are spaced apart along the second direction and have opposite polarities.

[0013] The explosion-proof valve is located between the two poles.

[0014] In one possible implementation, the battery pack provided in the present application further includes: a plurality of electrode connectors, each electrode connector being used to connect the poles of two adjacent battery cells.

[0015] In one possible implementation, the battery pack provided in this application includes a buffer support member comprising:

[0016] The support body includes a first surface facing the top cover along a first direction and a second surface facing the battery module.

[0017] The second surface is provided with a plurality of supporting ribs protruding toward the battery core module, and each supporting rib is embedded in the gap between two adjacent electrode connectors.

[0018] In one possible implementation, the battery pack provided by the present application comprises a plurality of battery cells divided into a plurality of battery cell groups arranged along the second direction, each battery cell group comprising a plurality of battery cells arranged along the third direction.

[0019] The poles of all cells in the same cell group are arranged in two rows.

[0020] Each electrode connector is used to connect two adjacent poles in the same column.

[0021] The support ribs include first support ribs extending along a third direction and located between two adjacent columns of electrode connectors belonging to different battery cell groups.

[0022] In one possible implementation, the battery pack provided by the present application further comprises a second support rib, and the second support rib extends along the second direction.

[0023] The second supporting rib is located between two adjacent electrode connectors along the third direction.

[0024] In one possible implementation, in the battery pack provided in the present application, an insulating medium is provided on the electrode end face of the battery cell, and the supporting ribs are bonded to the insulating medium.

[0025] In one possible implementation, the battery pack provided in this application may further include:

[0026] a first buffer layer, disposed on the second surface of the support body and covering the electrode connector; and / or,

[0027] The second buffer layer is disposed on the first surface of the support body and covers the first surface.

[0028] In another aspect, the present application provides a vehicle comprising:

[0029] body;

[0030] Any of the above battery packs is installed on the vehicle body.

[0031] In one possible implementation, the vehicle provided in the present application has a body with a cab, and the top cover of the battery pack constitutes the floor of the cab.

[0032] The battery pack and vehicle provided in the present application are provided with an outer shell, a battery cell module and a buffer support, wherein the outer shell includes a bottom shell and a top cover, the top cover and the bottom shell together form a accommodating cavity, the battery cell module is arranged in the accommodating cavity, and the top cover is used to form the floor of the vehicle. At this time, the top cover needs to bear the weight of the vehicle and the pressure of the vehicle user stepping on the vehicle in the vehicle cab at the same time. By arranging a buffer support between the top cover and the battery cell module, the force exerted on the top cover can be first transferred to the buffer support. On the one hand, the buffer support can support the top cover and prevent the top cover from deformation. On the other hand, the buffer support prevents the battery cell from being directly subjected to the pressure of the top cover, thereby protecting the battery cell, enabling the battery pack to work safely and smoothly, and improving the safety of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0034] Figure 1 A schematic diagram of the structure of the battery pack provided in an embodiment of the present application;

[0035] Figure 2 for Figure 1 Schematic diagram of the structure of the midsole shell, battery cell module and buffer support;

[0036] Figure 3 for Figure 2 A schematic diagram of the structure of the middle buffer support member;

[0037] Figure 4 for Figure 3 A structural diagram from another angle;

[0038] Figure 5 A schematic structural diagram of a cell module of a battery pack provided in an embodiment of the present application;

[0039] Figure 6 for Figure 5 Schematic diagram of the structure of the connection between the battery cell module and the buffer support.

[0040] Description of reference numerals:

[0041] 100-housing;

[0042] 110- bottom shell;

[0043] 120-top cover; 121-groove;

[0044] 130-accommodation cavity;

[0045] 200-cell module;

[0046] 210-battery cell group; 211-battery cell; 2111-electrode end; 2112-electrode column; 2113-explosion-proof valve;

[0047] 300-buffer support;

[0048] 310-support body;

[0049] 320-first supporting rib;

[0050] 330- second supporting rib;

[0051] 340-first buffer layer;

[0052] 350-second buffer layer;

[0053] 400-Electrode connector. DETAILED DESCRIPTION

[0054] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0055] As described in the background, in existing technology, when a battery pack is integrated into a vehicle and its top cover forms the vehicle's floor, it must simultaneously withstand the vehicle's own weight and the pressure of vehicle users stepping on it. However, due to its relatively low structural strength, the top cover is susceptible to deformation from prolonged and significant pressure. Furthermore, since the battery pack's cells are located beneath the top cover, deformation of the top cover could squeeze the cells, posing a safety hazard.

[0056] In view of this, the present application provides a battery pack and a vehicle, the battery pack including an outer shell, a battery cell module and a buffer support, wherein the outer shell includes a bottom shell and a top cover, the top cover and the bottom shell together form a accommodating cavity, the battery cell module is arranged in the accommodating cavity, and the top cover is used to form the floor of the vehicle, so the top cover needs to bear the weight of the vehicle and the pressure of the vehicle user stepping on the vehicle in the vehicle cab at the same time. The buffer support is arranged between the top cover and the battery cell module, and the force exerted on the top cover can be transferred to the buffer support. The buffer support can absorb part of the energy, or transfer the force along a certain path, and can support the top cover and prevent the top cover from deformation. Furthermore, it avoids the battery cell from being squeezed due to the deformation of the top cover, thereby effectively protecting the battery cell, enabling the battery pack to work safely and smoothly, and improving the safety of the vehicle.

[0057] The following specific embodiments are used to describe in detail the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The following embodiments of the present application are described in conjunction with the accompanying drawings:

[0058] It should be noted that the battery pack provided in the embodiments of the present application can be applied to a variety of different vehicles.

[0059] See also Figure 1 and Figure 2 As shown, the battery pack of an embodiment of the present application includes: an outer shell 100, including a bottom shell 110 and a top cover 120, the top cover 120 is sealed on one end of the bottom shell 110 along the first direction, and together with the bottom shell 110 defines a accommodating cavity 130; a battery cell module 200, arranged in the accommodating cavity 130; a buffer support member 300, supported and arranged between the battery cell module 200 and the top cover 120, to buffer the pressure of the outer shell 100 on the battery cell module 200.

[0060] In an embodiment of the present application, the battery cell module 200 is arranged in a accommodating cavity 130 jointly surrounded by the bottom shell 110 and the top cover 120. The top cover 120 is connected to the body of the vehicle and is used to form the floor of the vehicle cab. Therefore, the seats in the vehicle need to be set on the top cover 120. The vehicle user directly steps on the top cover 120, which causes the top cover 120 to be subjected to greater pressure. Therefore, a buffer support 300 is arranged between the top cover 120 and the battery cell module 200. When the top cover 120 is stepped on, the buffer support 300 can play a certain supporting role to prevent the top cover 120 from deforming, thereby avoiding the battery cell 211 from being squeezed and causing safety hazards, thereby improving the safety of vehicle use.

[0061] In specific implementation, the material and structure of the buffer support 300 are not limited in the embodiments of the present application, and it only needs to be able to buffer the pressure of the outer shell 100 on the battery module 200. For example, the part of the buffer support 300 that contacts the battery module 200 can be set to a material with lower hardness. When the top cover 120 is subjected to pressure and transmits the pressure to the buffer support 300, the part of the buffer support 300 with lower hardness is compressed to absorb part of the energy, reducing the force transmitted to the battery module 200, thereby avoiding the battery module 200 from being squeezed. Alternatively, the buffer support 300 can be arranged according to the shape of the battery module 200, and a certain force transmission path can be designed through the buffer support 300. When the top cover 120 transmits pressure to the buffer support 300, the buffer support 300 transmits the pressure through the force transmission path to the part of the battery module 200 with greater structural strength or other bearing capacity, avoiding the weak part of the battery module 200, which can also play a role in avoiding damage to the battery module 200.

[0062] Furthermore, the interference fit between the buffer support 300 and the top cover 120 can make the top cover 120 fully contact the buffer support 300, thereby fully transferring the pressure on the top cover 120 to the buffer support 300, thereby improving the supporting effect of the buffer support 300.

[0063] In addition, the number of buffer supports 300 can be multiple and arranged according to the layout of the vehicle cab. Since the vehicle seats are connected to the seat crossbeams on the vehicle body, the seat crossbeams play a certain supporting role. Therefore, the part of the top cover 120 where the seats are set is subjected to relatively small pressure and is not easy to deform. The top cover 120 is located between the two rows of seats or in front and behind the seats. Vehicle users may be stepped on when getting on and off the vehicle and riding in the vehicle. Therefore, the pressure they are subjected to is relatively large and is more prone to deformation. Therefore, the buffer supports 300 can be mainly arranged below the part of the top cover 120 that is subjected to greater force to improve its reinforcement effect. The specific number and layout of the buffer supports 300 are not limited in the embodiments of this application.

[0064] In this way, the battery pack of the embodiment of the present application effectively improves the structural strength of the top cover 120 and reduces the possibility of deformation of the top cover 120 by setting a buffer support 300 between the top cover 120 and the battery module 200, while reducing the pressure transmitted to the battery module 200, avoiding the battery module 200 from being squeezed, making the battery pack operate safely and stably, and improving the safety of the vehicle.

[0065] In some possible implementations, see Figure 1 、 Figure 2 、 Figure 5 and Figure 6As shown, the battery cell module 200 of the embodiment of the present application includes a plurality of battery cells 211 . The battery cells 211 have electrode ends 2111 facing the top cover 120 along a first direction. The electrode ends 2111 are provided with poles 2112 , and the buffer support 300 covers the poles 2112 .

[0066] It should be noted that Figure 1 The Z direction is the first direction. The electrode end 2111 of each battery cell 211 is provided with a pole 2112, and the pole 2112 protrudes from the surface of the battery cell 211 toward the top cover 120 along the first direction. Therefore, if the buffer support 300 is not provided, when the top cover 120 is subjected to pressure, it will first contact the pole 2112 and transfer the force to the pole 2112. However, the pole 2112 and the electrode end 2111 are not integrated and need to be fixed to the electrode end 2111 by welding or other methods, and the structural strength is relatively high. The lower the pole 2112, the weaker it is. The pressure from the top cover 120 is concentratedly transferred to the pole 2112, which can easily damage the pole 2112 and thus affect the safe and stable operation of the battery pack. Therefore, the buffer support 300 is set to cover the pole 2112. In this way, the buffer support 300 can disperse the pressure to the part with stronger structural strength by designing a specific force transmission path, and does not directly transfer the force to the pole 2112, thereby protecting the pole 2112 and avoiding damage to the battery cell module 200.

[0067] In some possible implementations, see Figure 2 、 Figure 5 and Figure 6 As shown, the electrode end 2111 of the embodiment of the present application is further provided with an explosion-proof valve 2113 . The explosion-proof valve 2113 is spaced apart from the electrode 2112 , and the buffer support 300 is staggered with the explosion-proof valve 2113 .

[0068] It can be understood that the explosion-proof valve 2113 is a safety protection device. Each battery cell 211 is provided with an explosion-proof valve 2113. The explosion-proof valve 2113 can detect the pressure and temperature inside the battery cell 211. When the detected pressure or temperature is greater than or equal to the preset value, the explosion-proof valve 2113 ruptures to reduce the pressure inside the battery cell 211 to avoid an explosion accident. Therefore, the buffer support 300 and the explosion-proof valve 2113 need to be staggered to reserve a certain space for the explosion-proof valve 2113 to rupture and release pressure, so as to avoid affecting the pressure relief effect of the explosion-proof valve 2113.

[0069] In some possible implementations, see Figure 2 、 Figure 5 and Figure 6 As shown, there are two poles 2112 in the embodiment of the present application. The two poles 2112 are spaced apart along the second direction. The polarities of the two poles 2112 are opposite, and the explosion-proof valve 2113 is provided between the two poles 2112 .

[0070] In a specific implementation, since a certain amount of space needs to be reserved above the explosion-proof valve 2113, and both poles 2112 of the battery cell 211 are raised relative to the electrode end 2111, a buffer support 300 is also provided between the pole 2112 and the top cover 120. The explosion-proof valve 2113 is arranged between the two poles 2112. The space defined by the top cover 120, the buffer support 300, the pole 2112, and the electrode end 2111 provides sufficient pressure relief space for the explosion-proof valve 2113, ensuring that the explosion-proof valve 2113 can operate normally. Placing the explosion-proof valve 2113 at the top of the battery cell 211 also facilitates pressure relief for the explosion-proof valve 2113.

[0071] In some possible implementations, see Figure 2 、 Figure 5 and Figure 6 As shown, the embodiment of the present application further includes: a plurality of electrode connectors 400 , each electrode connector 400 being used to connect the poles 2112 of two adjacent battery cells 211 .

[0072] It can be understood that the poles 2112 of two adjacent battery cells 211 are connected through the electrode connector 400, so that the battery cells 211 are connected in series to form a power supply. Each battery cell 211 can be connected to the electrode connector 400 by welding, mechanical crimping, etc. The specific structure of the electrode connector 400 and the connection method between the battery cell 211 and the electrode connector 400 are not limited in the embodiment of the present application, and it is sufficient to connect the battery cells 211 in series to form a power supply.

[0073] In some possible implementations, see Figures 1 to 5 As shown, the buffer support member 300 of the embodiment of the present application includes: a support body 310, the support body 310 includes a first surface facing the top cover 120 along a first direction and a second surface facing the battery cell module 200, and the second surface is provided with a plurality of support ribs protruding toward the battery cell module 200, and each support rib is embedded in the gap between two adjacent electrode connectors 400.

[0074] In some embodiments, the first surface of the support body 310 contacts the top cover 120, and the second surface of the support body 310 contacts the battery cell module 200. The specific connection method between the support body 310, the top cover 120 and the battery cell module 200 is not limited in the embodiments of the present application. For example, the second surface is bonded to the battery cell module 200 to limit the position of the buffer support body 310 to avoid displacement, and the first surface abuts against the top cover 120 so that the top cover 120 can be removed at any time when the battery pack is inspected to inspect the battery module.

[0075] Furthermore, a plurality of support ribs are provided on the second surface, the arrangement of the support ribs corresponding to the arrangement of the battery cells 211, and each support rib is embedded in the gap between two adjacent electrode connectors 400. In this way, when the top cover 120 transmits pressure to the support body, the pressure can be transmitted along the support body and the support ribs to the gaps between the battery cells 211, thereby preventing the pressure from directly acting on the electrode terminals 2111 and the poles 2112 of the battery cells 211, thereby protecting the battery cells 211 and ensuring the safe and stable operation of the battery pack. The support ribs can be integrally formed with the support body 310, or connected to the second surface of the support body 310 by bonding or other means. The specific connection method is not limited in the embodiments of the present application, as long as it can achieve force transmission.

[0076] In some possible implementations, see Figure 1 、 Figure 3 、 Figure 4 and Figure 5 As shown, the multiple battery cells 211 of the embodiment of the present application are divided into multiple battery cell groups 210 arranged along the second direction, each battery cell group 210 includes a number of battery cells 211 arranged along the third direction, and the poles 2112 of all battery cells 211 belonging to the same battery cell group 210 are arranged in two columns, and each electrode connector 400 is used to connect two adjacent poles 2112 in the same column. The support ribs include a first support rib 320, which extends along the third direction, and the first support rib 320 is located between two adjacent columns of electrode connectors 400 belonging to different battery cell groups 210.

[0077] It should be noted that Figure 1 and Figure 5 The X direction is the second direction, and the Y direction is the third direction. Since space needs to be reserved for the explosion-proof valve 2113, the buffer support 300 can only extend along the third direction. One buffer support 300 can simultaneously cover and protect two adjacent columns of poles 2112 of two adjacent battery cell groups 210. The first support rib 320 is embedded in the gap between the two adjacent battery cell groups 210, thereby introducing the pressure on the support body 310 into the gap and protecting the battery cell groups 210 from being squeezed.

[0078] In some possible implementations, see Figure 1 、 Figure 3 、 Figure 4 and Figure 6 As shown, the support rib of the embodiment of the present application further includes a second support rib 330 . The second support rib 330 extends along the second direction. The second support rib 330 is located between two adjacent electrode connectors 400 along the third direction.

[0079] In some embodiments, the gap between two poles 2112 connected by the electrode connector 400 is blocked by the electrode connector 400 and the second support rib 330 cannot be set. Therefore, the second support rib 330 can only be set between two adjacent electrode connectors 400 along the third direction. The number of second support ribs 330 can be determined according to the number of electrode connection spaces on the same battery cell group 210 covered by a support body 310, and the specific number is not limited in the embodiments of this application.

[0080] Among them, the first support rib 320 extends along the third direction, and the second support rib 330 extends along the second direction. Therefore, the first support rib 320 is perpendicular to the second support rib 330, and multiple second support ribs 330 are connected to one first support rib 320. In this way, the first support rib 320 and the second support rib 330 are cross-arranged on the second surface of the support body 310 to form the skeleton of the buffer support 300, which is beneficial to improve the structural strength of the buffer support 300 and improve its supporting effect. At the same time, it can also limit the position of the buffer support 300 in both the second direction and the third direction, thereby improving the stability of the connection between the buffer support 300 and the battery cell module 200.

[0081] In some possible implementations, see Figure 1 、 Figure 4 and Figure 5 As shown, an insulating medium is provided on the end surface of the electrode end 2111 of the battery cell 211 of the embodiment of the present application, and the supporting ribs are bonded to the insulating medium.

[0082] Specifically, the fixed connection between the buffer support 300 and the battery cell module 200 can better limit the position of the buffer support 300. An insulating medium is set on the end face of the electrode terminal 2111, and the support ribs are fixed to the end face of the electrode terminal 2111 by bonding with the insulating medium. This can improve the stability of the connection between the buffer support 300 and the battery cell module 200 while avoiding the connection between the support ribs and the battery cell 211 affecting the normal operation of the battery cell 211.

[0083] In some possible implementations, see Figure 1 、 Figure 3 、 Figure 4 and Figure 6 As shown, the buffer support member 300 of the embodiment of the present application also includes: a first buffer layer 340, which is arranged on the second surface of the support body 310 and covers the electrode connector 400; and / or, a second buffer layer 350, which is arranged on the first surface of the support body 310 and covers the first surface.

[0084] It should be noted that the second surface is divided into multiple planar regions by the first support ribs 320 and the second support ribs 330. The first buffer layer 340 is located within each planar region, thereby contacting the electrode connector 400 and the electrode piece. The second buffer layer 350 covers the first surface of the support body 310. The first and second buffer layers 340 and 350 can be made of a relatively low-hardness material, such as foam. This allows the first and second buffer layers 340 and 350 to be squeezed and compressed when the buffer support member 300 is secured to the battery module 200 and the top cover 120 is sealed onto the bottom case 110, creating an interference fit between the top cover 120 and the buffer support member 300. This ensures full contact between the first buffer layer 340 and the top cover 120, and full contact between the second buffer layer 350 and the electrode piece on the battery cell 211, as well as the electrode connector 400. This improves the force transmission efficiency of the buffer support member 300 and better protects the battery cell 211 from being squeezed.

[0085] It is important to note that the first buffer layer 340 should not be made of a material with too low a hardness. If the hardness is too low, after the pressure is transmitted to the buffer support 300, the first buffer layer 340 may deform excessively, potentially damaging the force transmission path of the buffer support 300, affecting the force transmission efficiency and failing to protect the battery cells 211. To ensure better contact between the top cover 120 and the first buffer layer 340, a groove 121 that matches the shape and position of the buffer support 300 can be provided on the top cover 120. This creates an interference fit between the first buffer layer 340 and the groove 121, limiting the position of the buffer support 300 while also improving the support effect of the buffer support 300.

[0086] See also Figure 1 As shown, an embodiment of the present application further provides a vehicle, comprising: a vehicle body and any one of the above-mentioned battery packs, wherein the battery pack is arranged on the vehicle body.

[0087] The structure and working principle of the battery pack are described in detail in the above embodiments and will not be repeated here.

[0088] In the embodiment of the present application, setting the above-mentioned battery pack on the vehicle body can improve the structural strength of the battery pack top cover 120 without affecting the normal operation of the battery pack, ensure the safe and stable operation of the battery pack, and thus improve the safety of vehicle use.

[0089] In some possible implementations, see Figure 1 As shown, the vehicle body of the embodiment of the present application has a cab, and the top cover 120 of the battery pack constitutes the floor of the cab.

[0090] It can be understood that the floor of the cab formed by the battery pack top cover 120 can effectively reduce the weight of the vehicle, which is conducive to the lightweighting of the vehicle. At the same time, the provision of any of the above-mentioned battery packs can improve the structural strength of the battery pack top cover 120, that is, improve the structural strength of the cab floor, thereby reducing the possibility of floor deformation, improving the quality of the vehicle, and ensuring the safety of vehicle driving.

[0091] In summary, the battery pack and vehicle provided in the embodiments of the present application, the battery pack includes an outer shell 100, a battery cell module 200 and a buffer support 300, the outer shell 100 includes a bottom shell 110 and a top cover 120, the top cover 120 is used to constitute the floor of the vehicle's cab, the battery cell module 200 is arranged in a accommodating cavity 130 jointly surrounded by the top cover 120 and the bottom shell 110, and the buffer support 300 is arranged between the top cover 120 and the battery cell module 200, the supporting body of the buffer support 300 bears the pressure exerted on the top cover 120, and transfers the pressure to the gaps between the battery cells 211 of the battery cell module 200 through the supporting ribs of the buffer support 300, thereby avoiding direct pressure on the battery cell module 200, and at the same time can also support the top cover 120 to prevent the top cover 120 from deforming and squeezing the battery cell module 200, thereby effectively protecting the battery cell module 200, ensuring the safe and stable operation of the battery pack, and improving the safety of the vehicle.

[0092] In the description of the embodiments of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to a fixed connection, an indirect connection via an intermediate medium, internal communication between two components, or an interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on specific circumstances.

[0093] In the embodiments of the present application, any device or element referred to or implied must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present application. In the description of the embodiments of the present application, the meaning of "plurality" is two or more, unless otherwise specifically specified.

[0094] The terms "first," "second," "third," "fourth," and so on (if any) in the description and claims of the embodiments of the present application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein, for example, can be implemented in an order other than those illustrated or described herein.

[0095] In addition, the terms "comprises" and "having" and any variations thereof are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, product or apparatus.

[0096] The term "plurality" in this document refers to two or more. The term "and / or" in this document simply describes an association between related objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone.

[0097] It will be understood that the various numerical numbers involved in the embodiments of the present application are merely distinctions for the convenience of description and are not intended to limit the scope of the embodiments of the present application.

[0098] It can be understood that in the embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0099] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the utility model disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0100] It should be understood that the present application is not limited to the exact structure described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A battery pack, characterized in that: include: The housing (100) comprises a bottom shell (110) and a top cover (120), wherein the top cover (120) covers one end of the bottom shell (110) along a first direction and defines a receiving cavity (130) together with the bottom shell (110); A battery core module (200) is disposed in the accommodating cavity (130); A buffer support member (300) is supported and arranged between the battery cell module (200) and the top cover (120) to buffer the pressure of the housing (100) on the battery cell module (200).

2. The battery pack according to claim 1, wherein: The battery cell module (200) comprises a plurality of battery cells (211), each of the battery cells (211) having an electrode terminal (2111) facing the top cover (120) along the first direction, the electrode terminal (2111) being provided with a pole (2112), and the buffer support (300) covering the pole (2112).

3. The battery pack according to claim 2, wherein: The electrode end (2111) is further provided with an explosion-proof valve (2113), and the explosion-proof valve (2113) is spaced apart from the electrode column (2112). The buffer support (300) and the explosion-proof valve (2113) are staggered.

4. The battery pack according to claim 3, wherein: There are two poles (2112), the two poles (2112) are spaced apart and distributed along the second direction, and the polarities of the two poles (2112) are opposite. The explosion-proof valve (2113) is provided between the two poles (2112).

5. The battery pack according to any one of claims 2 to 4, characterized in that: Also includes: A plurality of electrode connectors (400), each of the electrode connectors (400) is used to connect the poles (2112) of two adjacent battery cells (211).

6. The battery pack according to claim 5, characterized in that: The buffer support member (300) comprises: a supporting body (310), the supporting body (310) comprising a first surface facing the top cover (120) along the first direction and a second surface facing the battery cell module (200), The second surface is provided with a plurality of support ribs protruding toward the battery core module (200), and each of the support ribs is embedded in the gap between two adjacent electrode connectors (400).

7. The battery pack according to claim 6, characterized in that: The plurality of battery cells (211) are divided into a plurality of battery cell groups (210) arranged along the second direction, each of the battery cell groups (210) including a plurality of battery cells (211) arranged along the third direction, The poles (2112) of all the battery cells (211) belonging to the same battery cell group (210) are arranged in two rows. Each of the electrode connectors (400) is used to connect two adjacent poles (2112) in the same column. The support ribs include first support ribs (320), the first support ribs (320) extending along the third direction, and the first support ribs (320) being located between two adjacent columns of electrode connectors (400) belonging to different battery cell groups (210).

8. The battery pack according to claim 7, characterized in that: The support rib further comprises a second support rib (330), wherein the second support rib (330) extends along the second direction. The second supporting rib (330) is located between two adjacent electrode connectors (400) along the third direction.

9. The battery pack according to any one of claims 6 to 8, characterized in that: An insulating medium is provided on the end surface of the electrode terminal (2111) of the battery core (211), and the supporting rib is bonded to the insulating medium.

10. The battery pack according to any one of claims 6 to 8, characterized in that: The buffer support member (300) further includes: a first buffer layer (340) provided on the second surface of the support body (310) and covering the electrode connector (400); and / or, The second buffer layer (350) is provided on the first surface of the support body (310) and covers the first surface.

11. A vehicle, characterized in that: include: body; The battery pack according to any one of claims 1 to 10, wherein the battery pack is provided on the vehicle body.

12. The vehicle according to claim 11, characterized in that The vehicle body has a cab, and the top cover (120) of the battery pack constitutes the floor of the cab.

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