Battery devices and electrical equipment

Abstract

The present application provides a battery device and an electrical device to solve the problem of low reliability of the battery device in the prior art. The battery device includes a battery box, a battery module and a guide assembly; the battery box includes a first side wall; the battery module is contained in the battery box; the battery module includes a battery cell and an end plate, and the end plate is located on one side of the battery cell; the guide assembly is located between the side of the end plate and the battery box, and includes a first guide structure and a second guide structure; the first guide structure is fixed on the battery box, and the second guide structure is fixed on the side of the end plate; the first guide structure abuts against the second guide structure; wherein the second guide structure extends from the side of the end plate to the first side wall of the battery box, and bends to the side away from the battery cell.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery device and an electrical equipment. Background Art

[0002] At present, from the perspective of market development, the application of battery devices is becoming more and more extensive. The battery device can be a power battery, or a storage battery. The battery device includes a battery box and a battery cell, and the battery cell is contained in the battery box. Among them, the process of loading the battery cell into the battery box usually adopts a guide structure. However, the compression deformation of the guide structure is easy to damage the battery cell, which reduces the reliability of the battery device. Utility Model Content

[0003] The main technical problem solved by the present application is to provide a battery device and an electrical device to solve the problem of low reliability of the battery device in the prior art.

[0004] To solve the above technical problems, the first technical solution adopted in the present application is: to provide a battery device, the battery device includes a battery case, a battery module and a guide assembly; the battery case includes a first side wall; the battery module is accommodated in the battery case; the battery module includes a battery cell and an end plate, and the end plate is located on one side of the battery cell; the guide assembly is located between the side of the end plate and the battery case, and includes a first guide structure and a second guide structure; the first guide structure is fixed on the battery case, and the second guide structure is fixed on the side of the end plate; the first guide structure abuts against the second guide structure; wherein the second guide structure extends from the side of the end plate to the first side wall of the battery case, and bends to the side away from the battery cell.

[0005] In this embodiment, when a collision occurs during the process of putting the battery module into the box or during the use of the battery device, the first guide structure on the battery box will squeeze the second guide structure; because the second guide structure is bent toward the side away from the battery cell, the extension amount of the second guide structure toward the side close to the battery cell or the probability of moving toward the side close to the battery cell is reduced, for example, the second guide structure extends or moves toward the side away from the battery cell; thereby reducing the harmfulness of the second guide structure to the battery cell, improving the reliability of the battery cell, and further improving the reliability of the battery device.

[0006] In some embodiments, the bending portion of the second guide structure is arc-shaped.

[0007] In this embodiment, when the battery module is put into the box or when the battery device collides, the first guide structure on the battery box will squeeze the second guide structure; because the bending part of the second guide structure is arc-shaped, the bending part of the second guide structure is not easy to break, thereby reducing the risk of the second guide structure breaking, reducing the possibility of the broken second guide structure falling into the battery box and damaging the battery cell, and improving the reliability of the battery device.

[0008] In some embodiments, the second guide structure includes a first wall portion and a second wall portion; the first guide structure abuts against the first wall portion; one end of the second wall portion is connected to the side of the end plate, and the other end is connected to one end of the first wall portion; the other end of the first wall portion is suspended relative to the side of the end plate; the bending part of the second guide structure is the connection part between the first wall portion and the second wall portion.

[0009] In this embodiment, the second guide structure has a simple structure and is easy to cooperate with the first guide structure.

[0010] In some embodiments, the first wall portion and the second wall portion are both plates; the first wall portion is perpendicular to the second wall portion, and the second wall portion is perpendicular to the side of the end plate; and the connection between the first wall portion and the second wall portion is chamfered.

[0011] In this embodiment, the contact area between the first wall portion and the first guide structure is relatively large, which can increase the guiding reliability between the first guide structure and the second guide structure, thereby improving the reliability of the battery module entering the box, and further improving the reliability of the battery device.

[0012] In some embodiments, the second guide structure further includes a first arc segment, the first wall portion and the second wall portion are both second arc segments, the first arc segment and the second arc segment have the same curvature, and the first arc segment is smoothly connected between the first wall portion and the second wall portion.

[0013] In this embodiment, when the battery device collides, the first guide structure on the battery box will squeeze the second guide structure, so that the entire arc-shaped second guide structure can absorb more impact force and reduce the risk of the second guide structure breaking, thereby improving the reliability of the battery device.

[0014] In some embodiments, the first wall portion includes a first extension portion and a second extension portion located at the bottom of the first extension portion; the first extension portion is parallel to the side of the end plate, and the second extension portion is obliquely connected between the bottom of the first extension portion and the side of the end plate; the guide angle between the second extension portion and the side of the end plate is 13°~20°.

[0015] In this embodiment, the guide angle is 13°~20°, so that the first extension portion is relatively flat, so that the first guide structure can slide relatively smoothly onto the second extension portion, thereby improving the reliability of the battery module entering the box, and further improving the reliability of the battery device.

[0016] In some embodiments, the wall thickness of the second wall portion is greater than or equal to the wall thickness of the first wall portion; and the wall thickness of the first wall portion is 1.3 mm to 2.5 mm, and the wall thickness of the second wall portion is 1.5 mm to 2.5 mm.

[0017] In this embodiment, the wall thickness of the second wall portion is greater than or equal to the wall thickness of the first wall portion, so that the first wall portion has better flexibility and can deform better to absorb more impact force; at the same time, the second wall portion is not easy to break, reducing the possibility of the second guide structure falling into the battery box; thereby improving the reliability of the battery device.

[0018] In some embodiments, a line connecting one end of the second wall portion and the other end of the first wall portion is parallel to a plate surface of the end plate or is inclined relative to the end plate toward a side away from the battery cell.

[0019] In this embodiment, since the line connecting one end of the second wall portion and the other end of the first wall portion is parallel to the plate surface of the end plate or inclined relative to the end plate toward the side away from the battery cell; when the battery device collides, the first guide structure on the battery box will squeeze the second guide structure, reducing the probability of the second guide structure tilting toward the side close to the battery cell, thereby reducing the harm of the second guide structure to the battery cell, improving the reliability of the battery cell, and further improving the reliability of the battery device.

[0020] In some embodiments, the angle between the second wall portion and the side surface of the end plate is greater than or equal to 30° and less than or equal to 90°.

[0021] In this embodiment, the angle β between one end of the second guide structure and the side surface of the end plate is greater than or equal to 30° and less than or equal to 90°; so that the second guide structure can absorb more impact force, thereby improving the reliability of the battery device.

[0022] In some embodiments, along the height direction of the battery module, the height of the second guide structure is 24 mm to 50 mm.

[0023] In this embodiment, the height H of the second guide structure is 24 mm to 50 mm; during the process of the battery module being put into the box, the guide distance between the first guide structure and the second guide structure is made longer, thereby improving the reliability of the battery module being put into the box and improving the reliability of the battery device.

[0024] In some embodiments, the first guide structure includes a first connecting portion and a second connecting portion; the extension direction of the first connecting portion intersects with the extension direction of the second connecting portion, and the first connecting portion is connected to the second connecting portion; the second connecting portion is connected to the first side wall of the battery box; the first connecting portion has a guide surface; and the guide surface abuts against the second guide structure.

[0025] In this embodiment, the first guide structure has a simple structure to facilitate cooperation with the second guide structure.

[0026] In some embodiments, along the extension direction of the first connection portion, the first connection portion has two opposite first end surfaces; the first end surface close to the top of the end plate is a convex arc surface, and the radius of the arc surface is 3mm~8mm.

[0027] In this embodiment, during the process of putting the battery module into the box, the first end surface close to the top of the end plate is a raised arc surface, which reduces the risk of the first guide structure and the second guide structure hitting each other, facilitates the contact guidance of the first guide structure and the second guide structure, and thus improves the reliability of the battery device.

[0028] In some embodiments, the first connecting part and the second connecting part are both plates, and one plate surface of the first connecting part is a guide surface; the first connecting part is perpendicular to the second connecting part; the plate thickness of the first connecting part is the same as the plate thickness of the second connecting part, and is 3mm~6mm; the side surface of the first connecting part and the plate surface of the second connecting part are set as a first chamfer at the connection, and the radius of the first chamfer is 3mm~8mm.

[0029] In this embodiment, the plate thickness of the first connection part is the same as that of the second connection part, and is 3 mm to 6 mm; this can make the strength of the first connection part and the second connection part higher. The radius of the first rounded corner is 3 mm to 8 mm, which can reduce the risk of the side surface of the first connection part and the plate surface of the second connection part breaking at the connection due to stress concentration. The possibility of the broken first guide structure falling into the battery box and damaging the battery cell is reduced, thereby improving the reliability of the battery device.

[0030] In some embodiments, the first guide structure also includes a reinforcement portion; the reinforcement portion is connected to the surface of the first connection portion away from the guide surface and is connected to the second connection portion; along the extension direction of the second connection portion, the thickness of the reinforcement portion is 2mm~5mm.

[0031] In this embodiment, the provided reinforcement portion can increase the reliability of the connection between the first connection portion and the second connection portion, reduce the risk of the first guide structure breaking, thereby improving the reliability of the battery module entering the box and improving the reliability of the battery device.

[0032] In some embodiments, the battery box includes a box frame and a dividing beam; the dividing beam is disposed in the box frame and divides the interior of the box frame into multiple battery compartments; wherein the box frame and / or the dividing beam includes a first side wall; and at least one second guide structure is disposed on each end plate.

[0033] In this embodiment, by cooperating with multiple pairs of first guide structures and second guide structures, the reliability of the battery module entering the box can be improved, and the battery module can be restricted in the battery box from multiple directions, thereby reducing the risk of lateral shaking of the battery module in the battery box, thereby improving the reliability of the battery device.

[0034] In some embodiments, the first guide structure presses the second guide structure, causing the second guide structure to be partially deformed.

[0035] In this embodiment, the deformation of the second guide structure generates elastic force to limit the lateral movement of the battery module and the second guide structure as a whole relative to the battery box and the first guide structure as a whole, thereby improving the reliability of the battery device.

[0036] In some embodiments, the guide assembly further includes a third guide structure; the third guide structure is disposed on a side surface of the end plate and is spaced apart from the bottom end of the second guide structure.

[0037] In this embodiment, during the process of placing the battery module into the box, the first guide structure contacts and guides the battery module before the third guide structure, and then contacts and guides the battery module with the second guide structure. At the height between the second guide structure and the bottom of the battery module, the battery module can enter the battery box more reliably, so that the first guide structure and the second guide structure contact and guide each other, thereby improving the reliability of the battery device.

[0038] In order to solve the above technical problems, the second technical solution provided by the present application is to provide an electric device, the electric device includes the above battery device and an electric component, and the electric component is electrically connected to the battery device. Since the electric device includes the above battery device, it has the same effect as the battery device. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0040] Figure 1 It is a structural schematic diagram of the electrical equipment provided by this application;

[0041] Figure 2is a schematic diagram of the structure of the battery device provided by the present application;

[0042] Figure 3 It is a schematic diagram of the structure of the lower box body and the battery cells (only two battery cells are given as an example) provided in the present application;

[0043] Figure 4 yes Figure 3 Enlarged view at Q;

[0044] Figure 5 yes Figure 4 The cross-sectional view at line AA;

[0045] Figure 6 is a structural schematic diagram of the end plate, the second guide structure and the third guide structure provided by the present application;

[0046] Figure 7 is a partial view of the end plate, the second guide structure and the third guide structure provided by the present application;

[0047] Figure 8 is a structural schematic diagram of the end plate and the second guide structure provided by the present application;

[0048] Fig. 9 It is a schematic diagram of the structure of a battery cell provided in this application;

[0049] Fig.10 is a structural schematic diagram of a first guide structure provided by the present application;

[0050] Fig.11 It is a structural schematic diagram of another first guide structure provided in the present application.

[0051] In the figure: 1. battery device; 11. battery box; 111. upper box; 112. lower box; 113. split beam; 114. battery compartment; 115. first side wall; 116. box frame; 12. battery module; 121. battery cell; 1211. connecting member; 1212. cover plate; 1213. pole; 1214. safety valve; 1215. electrode assembly; 1216. shell; 122. end plate; 13. guide assembly; 1 31. First guide structure; 1311. Reinforcement portion; 1312. Second connection portion; 1313. First connection portion; 13131. First end face; 13132. Guide face; 1314. First chamfered corner; 132. Second guide structure; 1321. First wall portion; 13211. First extension portion; 13212. Second extension portion; 1322. Second wall portion; 1323. Bend; 133. Third guide structure; 2. Electrical components. DETAILED DESCRIPTION

[0052] The scheme of the embodiment of the present application is described in detail below in conjunction with the drawings of the specification.

[0053] In the following description, for the purpose of explanation rather than limitation, specific details such as specific system structures, interfaces, and technologies are provided to facilitate a thorough understanding of the present application.

[0054] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions 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 technicians in this field without making creative work are within the scope of protection of this application.

[0055] The terms "first", "second" and "third" in this application are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second" and "third" can explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. All directional indications (such as up, down, left, right, front, back...) in the embodiments of this application are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0056] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0057] At present, from the perspective of market development, the application of battery devices is becoming more and more extensive. Battery devices can be power batteries, which are power sources for tools. Power batteries mostly refer to batteries that provide power for electric vehicles, electric trains, electric bicycles, golf carts and other transportation vehicles, as well as aerospace. Of course, battery devices can also be energy storage batteries, which refer to batteries used to store energy from renewable energy sources such as hydropower, thermal power, wind power and solar power stations. With the continuous expansion of the application fields of battery devices, the market demand is also constantly expanding.

[0058] The battery device may include a battery box, a battery module and a guide assembly, wherein the battery module is contained in the battery box. The battery module may include a battery cell and an end plate, wherein the end plate is disposed on one side of the battery cell. The guide assembly may include a first guide structure and a second guide structure; the first guide structure is fixed to the battery box, and the second guide structure is fixed to the end plate. During the process of inserting the battery module into the box, the first guide structure cooperates with the second guide structure to facilitate the installation of the battery module in the battery box.

[0059] One end of the second guide structure is arranged on the side of the end plate; the other end of the second guide structure is bent and extends toward the side close to the battery cell, and is suspended relative to the side of the end plate. When the battery module is put into the box or the battery device collides during use, the first guide structure on the battery box will squeeze the second guide structure, causing the second guide structure to be compressed and deformed, and the other side of the second guide structure extends or moves toward the side close to the battery cell; the other side of the extended or moved second guide structure may puncture the battery cell, reducing the reliability of the battery cell, thereby reducing the reliability of the battery device.

[0060] In order to solve the problem of low reliability of the battery device, an embodiment of the present application also provides a battery device, which includes a battery case, a battery module and a guide assembly; the battery case includes a first side wall; the battery module is accommodated in the battery case; the battery module includes a battery cell and an end plate, and the end plate is located on one side of the battery cell; the guide assembly is located between the side of the end plate and the battery case, and includes a first guide structure and a second guide structure; the first guide structure is fixed to the battery case, and the second guide structure is fixed to the side of the end plate; the first guide structure abuts against the second guide structure; wherein the second guide structure extends from the side of the end plate to the first side wall of the battery case, and the second guide structure is bent to the side away from the battery cell. When a collision occurs during the process of putting the battery module into the box or during the use of the battery device, the first guide structure on the battery box will squeeze the second guide structure; since the second guide structure is bent toward the side away from the battery cell, the extension amount of the second guide structure toward the side close to the battery cell or the probability of moving toward the side close to the battery cell is reduced, for example, the second guide structure extends or moves toward the side away from the battery cell; thereby reducing the harm of the second guide structure to the battery cell, improving the reliability of the battery cell, and further improving the reliability of the battery device.

[0061] The embodiment of the present application provides an electrical device. Figure 1 The electrical equipment includes a battery device 1 and an electrical device 2 , and the electrical device 2 is electrically connected to the battery device 1 .

[0062] Electrical equipment can be vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys and electric tools, etc. Vehicles can be fuel vehicles, gas vehicles or new energy vehicles, and new energy vehicles can be pure electric vehicles, hybrid vehicles or extended-range vehicles, etc. Spacecraft include airplanes, rockets, space shuttles and spacecrafts, etc. Electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys and electric airplane toys, etc.; electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators and electric planers, etc. For the convenience of explanation, the following embodiments are described by taking the electric equipment as a vehicle as an example.

[0063] The electrical device 2 may be a component or device that can consume electricity; the electrical device 2 may be a controller and an electronic component, etc. The controller may be a central processing unit (CPU), a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.

[0064] In some examples, the electric device may be a vehicle, and the electric device 2 may be a lamp (such as a headlight, a taillight, etc.), a display screen, a dashboard, a control system (such as a controller), etc. of the vehicle. The electric device may also include other parts, such as a vehicle frame, and the battery device 1 and the electric device 2 are both mounted on the vehicle body.

[0065] The embodiment of the present application also provides a battery device, see Figure 2~Figure 8 The battery device 1 of the present application includes a battery case 11, a battery module 12 and a guide assembly 13; the battery case 11 includes a first side wall 115; the battery module 12 is accommodated in the battery case 11; the battery module 12 includes a battery cell 121 and an end plate 122, and the end plate 122 is located on one side of the battery cell 121; the guide assembly 13 is located between the side of the end plate 122 and the battery case 11, and includes a first guide structure 131 and a second guide structure 132; the first guide structure 131 is fixed on the battery case 11, and the second guide structure 132 is fixed on the side of the end plate 122; the first guide structure 131 abuts against the second guide structure 132; wherein the second guide structure 132 extends from the side of the end plate 122 to the first side wall 115 of the battery case 11, and the second guide structure 132 is bent to the side away from the battery cell 121.

[0066] The battery case 11 has a cavity, and one or more battery modules 12 are accommodated in the cavity; the battery case 11 can protect the battery module 12 and also facilitate the collection of multiple battery modules 12 together.

[0067] In some examples, the battery box 11 may include a box frame 116 and a split beam 113; the split beam 113 is arranged in the box frame 116, and divides the interior of the box frame 116 into a plurality of battery compartments 114; the battery compartment 114 is used to accommodate at least one battery module 12. Among them, the first side wall 115 of the battery box 11 may be at least one of the box frame 116 and the split beam 113; for example, the first side wall 115 of the battery box 11 includes the box frame 116 and the split beam 113. For example, the battery box 11 may also include an end cover and a bottom structure, the bottom structure is arranged at the bottom of the box frame 116, and the end cover is buckled on the top of the box frame 116. The bottom structure may be at least one of a bottom guard plate, a bottom plate, and a heat sink. In some examples, the battery box 11 may include a lower box 112 and an upper box 111. For example, the end cover may be the upper box 111, and the lower box 112 may include a guard plate, a box frame 116, and a split beam 113.

[0068] The battery cell 121 may be a secondary battery, which refers to a battery cell 121 that can be continuously used by activating active materials by charging after the battery cell 121 is discharged. The battery cell 121 may include, but is not limited to, a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead storage battery, and the like.

[0069] The number of battery cells 121 may be one or more; wherein, a plurality of battery cells 121 may be arranged in at least one direction. For example, each battery module 12 includes a plurality of battery cells 121, and the plurality of battery cells 121 may be arranged in a row, and end plates 122 are provided at both ends. For another example, a plurality of battery cells 121 may be arranged in a row. For another example, a plurality of battery cells 121 may be arranged in multiple rows and columns. A plurality of battery cells 121 may be connected in series, in parallel, or in a mixed connection. The plurality of battery cells 121 in the battery module 12 may be electrically connected through a busbar component, so as to realize, for example, the parallel connection, series connection, or mixed connection of a plurality of battery cells 121 in the battery module 12.

[0070] For some examples, see Fig. 9, the battery cell 121 may include a shell 1216, an electrode assembly 1215 and a cover plate 1212. The shell 1216 has a connected cavity and an installation port. The number of electrode assemblies 1215 may be one or more; the electrode assembly 1215 is installed in the cavity of the shell 1216. The cover plate 1212 is connected to the shell 1216 and covers the installation port. The shell 1216 is filled with an electrolyte, such as an electrolyte. The electrode assembly 1215 may include an anode electrode sheet and a cathode electrode sheet, and a separator disposed between the anode electrode sheet and the cathode electrode sheet. During the charge and discharge process of the battery cell 121, active ions (such as lithium ions) are embedded and removed back and forth between the anode electrode sheet and the cathode electrode sheet. The separator can prevent the anode electrode sheet from short-circuiting with the cathode electrode sheet to a certain extent, and at the same time allow active ions to pass through. The battery cell 121 may also include a safety valve 1214 (also called a pressure relief valve), two poles 1213 and two connecting members 1211 (also called current collecting members). The safety valve 1214 may be provided on the cover plate 1212, for example, the safety valve 1214 is fixed on the cover plate 1212, and the safety valve 1214 is used to actuate when the internal pressure or temperature of the battery cell 121 reaches a threshold value to discharge the internal electrolyte to reduce the internal pressure or temperature of the battery cell 121. For example, the safety valve 1214 may be a temperature-sensitive valve, a pressure-sensitive valve, etc. Two poles 1213 may be provided on the cover plate 1212, and the two poles 1213 are respectively a positive pole 1213 and a negative pole 1213, and one pole 1213 is connected to a corresponding connecting member 1211. The connecting member 1211 is located between the cover plate 1212 and the electrode assembly 1215, and is used to electrically connect the electrode assembly 1215 and the pole 1213. The shell 1216 is a hollow structure, and the material of the shell 1216 may be metal or plastic; for example, the material of the shell 1216 may be copper, iron, aluminum, steel, aluminum alloy, etc. The shape of the battery cell 121 can be rectangular, cylindrical, etc.

[0071] Herein, the battery cell 121 is rectangular in shape, and multiple battery cells 121 can be arranged in multiple rows and columns. The rectangular battery cell 121 can have a length direction, a width direction, and a height direction; the height direction of the battery module 12 is the same as the height direction of the battery cell 121. Any two of the length direction, width direction, and height direction of the battery cell 121 are perpendicular to each other to form a three-dimensional coordinate system.

[0072] The end plate 122 is located on one side of the battery cell 121. It can be understood that the plate surface of the end plate 122 is arranged on the surface of the plurality of battery cells 121 perpendicular to the width direction. The end plate 122 can be an insulating material, for example, the insulating material can be plastic, etc. The number of the end plates 122 can be one or two; wherein the two end plates 122 are arranged opposite to each other, and the plurality of battery cells 121 are clamped between the two end plates 122. An output pole base can be arranged on the end plate 122, and the battery device 1 can output electrical energy using the output pole base.

[0073] In some examples, the battery module 12 may also include at least one of a top plate, a bottom plate, and two side plates. For example, the battery module 12 may also include a top plate, a bottom plate, two side plates, and two end plates 122, and the two end plates 122, a top plate, a bottom plate, and two side plates may enclose a module box. Specifically, the two side plates and the two end plates 122 are located between the top plate and the bottom plate, and the end plates 122 and the side plates intersect (e.g., vertically). The module box has a accommodating cavity. A plurality of battery cells 121 are installed in the accommodating cavity of the module box so that the module box plays a role in protecting the battery cells 121. Among them, the side plates are arranged on the surfaces of the plurality of battery cells 121 perpendicular to the length direction; the top plate is arranged on the top of the plurality of battery cells 121, and the bottom plate is arranged on the bottom of the plurality of battery cells 121.

[0074] In some examples, the battery module 12 may further include a binding strap, by which the two end plates 122 and the plurality of battery cells 121 are fixed together.

[0075] The end plate 122 has two opposite sides. At least one guide structure may be provided between one side of the end plate 122 and the battery case 11, for example, one guide structure may be provided between one side of the end plate 122 and the battery case 11. In some examples, at least one guide structure may also be provided between the other side of the end plate 122 and the battery case 11, for example, one guide structure may be provided between the other side of the end plate 122 and the battery case 11. In other examples, no guide structure is provided between the other side of the end plate 122 and the battery case 11.

[0076] The first guide structure 131 can be a T-shaped structure, a plate-shaped structure, a cross structure, etc., without limitation. The material of the first guide structure 131 can be a rigid material or a flexible material. The rigid material can be a metal. The first guide structure 131 can be fixed to the battery case 11 by bolts, snaps, etc.; of course, the first guide structure 131 can be welded to the battery case 11. In some examples, the first guide structure 131 is disposed on the first side wall 115 of the battery case 11, so that the first guide structure 131 and the second guide structure 132 are both located between the side of the end plate 122 and the first side wall 115 of the battery case 11. Of course, the first guide structure 131 can also be fixedly connected to the bottom of the battery case 11 and extend to one side of the first side wall 115 of the battery case 11.

[0077] The material of the second guide structure 132 can be resin or metal. The second guide structure 132 can be fixed to the side of the end plate 122 by bolts, buckles, etc.; or, the second guide structure 132 can be welded to the side of the end plate 122; or, the second guide structure 132 can be integrally formed with the end plate 122. The side of the end plate 122 is perpendicular to the plate surface of the end plate 122.

[0078] After the first guiding structure 131 abuts against the second guiding structure 132 , the second guiding structure 132 may be partially deformed or may not be deformed at all.

[0079] The second guide structure 132 extends from the side of the end plate 122 to the first side wall 115 of the battery case 11. It can be understood that the second guide structure 132 extends from the side where the end plate 122 and the second guide structure 132 are connected to the portion of the first side wall 115 of the battery case 11 opposite to the side of the end plate 122. The portion of the second guide structure 132 bent toward the side away from the battery cell 121 can abut against the first guide structure 131; for example, the portion of the second guide structure 132 bent toward the side away from the battery cell 121 can be the first wall portion 1321 hereinafter.

[0080] In some examples, the side of the second guide structure 132 away from the side of the end plate 122 is suspended relative to the side of the end plate 122, that is, there is a gap between the side of the second guide structure 132 away from the side of the end plate 122 and the side of the end plate 122; in this case, the cross-section of the second guide structure 132 is C-shaped, L-shaped, etc. In other examples, the side of the second guide structure 132 away from the side of the end plate 122 is connected to the side of the end plate 122; in this case, the cross-section of the second guide structure 132 is annular, etc. Among them, the cross-section of the second guide structure 132 is perpendicular to the height direction of the battery module 12.

[0081] During the process of installing the battery module 12 in the battery case 11 (which can be simply referred to as the process of installing the battery module 12 into the battery case 11), the bottom end of the battery module 12 enters the battery case 11 from the top end of the battery case 11, and the first guide structure 131 contacts and guides the second guide structure 132 so that the battery module 12 is installed in the battery case 11 in the extending guide direction.

[0082] In this embodiment, the fracture occurrence rate of the first guide structure 131 and the second guide structure 132 is reduced from the existing 1.7% to 0.1%, or even to 0 (ie, the first guide structure 131 and the second guide structure 132 are not fractured).

[0083] In this embodiment, when a collision occurs during the process of putting the battery module into the box or the battery device 1 is used, the first guide structure 131 on the battery box 11 will squeeze the second guide structure 132; because the second guide structure 132 is bent toward the side away from the battery cell 121, the extension amount of the second guide structure 132 toward the side close to the battery cell 121 or the probability of moving toward the side close to the battery cell 121 is reduced, for example, the second guide structure 132 extends or moves toward the side away from the battery cell 121; thereby reducing the harm of the second guide structure 132 to the battery cell 121, improving the reliability of the battery cell 121, and further improving the reliability of the battery device 1.

[0084] In some embodiments, see Figure 4~Figure 8 The bending part 1323 of the second guide structure 132 is arc-shaped.

[0085] In some examples, the number of the bends 1323 of the second guide structure 132 may be one; for example, the second guide structure 132 may include a first wall portion 1321 and a second wall portion 1322, and the connection between the first wall portion 1321 and the second wall portion 1322 is the bend 1323 of the second guide structure 132. In other examples, the number of the bends 1323 of the second guide structure 132 may be multiple; for example, the second guide structure 132 may be a structure similar to a spring.

[0086] The bending part 1323 of the second guide structure 132 is arc-shaped, which can be understood as that the cross section of the top of the bending part 1323 of the second guide structure 132 is arc-shaped.

[0087] In this embodiment, when the battery module 12 is put into the box or when the battery device 1 collides, the first guide structure 131 on the battery box 11 will squeeze the second guide structure 132; because the bending part of the second guide structure 132 is arc-shaped, the bending part of the second guide structure 132 is not easy to break, thereby reducing the risk of the second guide structure 132 breaking, and reducing the possibility of the broken second guide structure 132 falling into the battery box 11 and damaging the battery cell 121, thereby improving the reliability of the battery device 1.

[0088] In some embodiments, the second guide structure 132 includes a first wall portion 1321 and a second wall portion 1322; the first guide structure 131 abuts against the first wall portion 1321; one end of the second wall portion 1322 is connected to the side of the end plate 122, and the other end of the second wall portion 1322 is connected to one end of the first wall portion 1321; the other end of the first wall portion 1321 is suspended relative to the side of the end plate 122; the bending point 1323 of the second guide structure 132 is the connection point between the first wall portion 1321 and the second wall portion 1322.

[0089] The other end of the first wall portion 1321 is suspended relative to the side of the end plate 122. It can be understood that there is a gap between the other end of the first wall portion 1321 and the side of the end plate 122, that is, the other end of the first wall portion 1321 does not contact the side of the end plate 122. In some examples, the second wall portion 1322 intersects (e.g., is perpendicular to) the first wall portion 1321.

[0090] In this embodiment, the second guide structure 132 has a simple structure and is easy to cooperate with the first guide structure 131 .

[0091] In some embodiments, see Figure 4~Figure 7 The first wall portion 1321 and the second wall portion 1322 are both plates; the first wall portion 1321 is perpendicular to the second wall portion 1322, and the second wall portion 1322 is perpendicular to the side surface of the end plate 122; the connection between the first wall portion 1321 and the second wall portion 1322 is chamfered.

[0092] The first wall portion 1321 is perpendicular to the second wall portion 1322 , which can be understood as that the plate surface of the first wall portion 1321 is perpendicular to the plate surface of the second wall portion 1322 .

[0093] In some examples, the first wall portion 1321 includes a first extension portion 13211 and a second extension portion 13212 distributed along the height direction of the battery module, and the second extension portion 13212 is connected to the bottom of the first extension portion 13211. The first extension portion 13211 and the second extension portion 13212 are both flat plates and cross-connected. For example, the second wall portion 1322 is perpendicular to the first extension portion 13211 of the first wall portion 1321, and the second wall portion 1322 is a flat plate; in this case, the first extension portion 13211 and the second wall portion 1322 of the first wall portion 1321 can form an L shape.

[0094] In some other examples, both the first wall portion 1321 and the second wall portion 1322 are flat plates. For example, the second wall portion 1322 is perpendicular to the first wall portion 1321, and in this case, the first wall portion 1321 and the second wall portion 1322 may form an L shape.

[0095] It should be noted that the connection between the second wall portion 1322 and the first wall portion 1321 is chamfered so that the connection between the second wall portion 1322 and the first wall portion 1321 is arc-shaped.

[0096] In this embodiment, the contact area between the first wall portion 1321 and the first guide structure 131 is relatively large, which can increase the guiding reliability between the first guide structure 131 and the second guide structure 132, thereby improving the reliability of the battery module 12 entering the box, and further improving the reliability of the battery device 1.

[0097] In some embodiments, see Figure 8 The second guide structure 132 also includes a first arc segment, the first wall portion 1321 and the second wall portion 1322 are both second arc segments, the first arc segment and the second arc segment have the same curvature, and the first arc segment is smoothly connected between the first wall portion 1321 and the second wall portion 1322.

[0098] The first arc segment and the second arc segment have the same curvature, and the first arc segment is smoothly connected between the first wall portion 1321 and the second wall portion 1322; it can be understood that the second guide structure 132 is an arc shape as a whole. For example, the arc shape can be a semicircle, and for another example, the arc shape can also be a major arc. In some examples, the bending portion, the first wall portion 1321 and the second wall portion 1322 can be an integrally formed structure.

[0099] The first arc section is the connection between the first wall portion 1321 and the second wall portion 1322 , that is, the bending portion 1323 of the second guiding structure 132 .

[0100] In this embodiment, when the battery module 12 is put into the box or when the battery device 1 collides, the first guide structure 131 on the battery box body 11 will squeeze the second guide structure 132, so that the entire arc-shaped second guide structure 132 can absorb more impact force and reduce the risk of the second guide structure 132 breaking, thereby improving the reliability of the battery device 1.

[0101] In some embodiments, see Figure 5~Figure 7 The first wall portion 1321 includes a first extension portion 13211 and a second extension portion 13212 located at the bottom of the first extension portion 13211; the first extension portion 13211 is parallel to the side of the end plate 122, and the second extension portion 13212 is obliquely connected between the bottom of the first extension portion 13211 and the side of the end plate 122; the guide angle α between the second extension portion 13212 and the side of the end plate 122 is 13°~20°.

[0102] For example, the guide angle α between the second extension portion 13212 and the side surface of the end plate 122 is 13°, 14°, 15°, 16°, 17°, 18°, 19°, 20°, etc.

[0103] In this embodiment, the guide angle α is 13°~20°, so that the first extension portion 13211 is relatively flat, so that the first guide structure 131 can slide relatively smoothly onto the second extension portion 13212, thereby improving the reliability of the battery module 12 entering the box, and further improving the reliability of the battery device 1.

[0104] In some embodiments, the wall thickness of the second wall portion 1322 is greater than or equal to the wall thickness of the first wall portion 1321 ; and the wall thickness of the first wall portion 1321 is 1.3 mm to 2.5 mm, and the wall thickness of the second wall portion 1322 is 1.5 mm to 2.5 mm.

[0105] For example, the thickness of the first wall portion 1321 is 1.3 mm, 1.5 mm, 1.7 mm, 1.9 mm, 2 mm, 2.1 mm, 2.3 mm, 2.5 mm, etc. For example, the thickness of the second wall portion 1322 is 1.5 mm, 1.7 mm, 1.9 mm, 2 mm, 2.1 mm, 2.3 mm, 2.5 mm, etc.

[0106] In this embodiment, the wall thickness of the second wall portion 1322 is greater than or equal to the wall thickness of the first wall portion 1321, so that the first wall portion 1321 has better flexibility and can be better deformed to absorb more impact force; at the same time, the second wall portion 1322 is not easy to break, reducing the possibility of the second guide structure falling into the battery box; thereby improving the reliability of the battery device 1.

[0107] In some embodiments, see Figure 8A line L connecting one end of the second wall portion 1322 and the other end of the first wall portion 1321 is parallel to the plate surface of the end plate 122 or is inclined relative to the end plate 122 toward a side away from the battery cell 121 .

[0108] A line L connecting one end of the second wall portion 1322 and the other end of the first wall portion 1321 is a line L connecting one end and the other end of the second guide structure 132 .

[0109] In this embodiment, since the connecting line L between one end of the second wall portion 1322 and the other end of the first wall portion 1321 is parallel to the plate surface of the end plate 122 or inclined relative to the end plate 122 toward the side away from the battery cell 121; when the battery device 1 collides, the first guide structure 131 on the battery case 11 will squeeze the second guide structure 132, reducing the probability of the second guide structure 132 tilting toward the side close to the battery cell 121, thereby reducing the harm of the second guide structure 132 to the battery cell 121, improving the reliability of the battery cell 121, and further improving the reliability of the battery device 1.

[0110] In some embodiments, the angle β between the second wall portion 1322 and the side surface of the end plate 122 is greater than or equal to 30° and less than or equal to 90°.

[0111] For example, the angle β between one end of the second guide structure 132 and the side surface of the end plate 122 is 30°, 45°, 50°, 60°, 65°, 70°, 80°, 90°, etc.

[0112] In some examples, the second wall portion 1322 is a flat plate, and the angle β between the second wall portion 1322 and the side surface of the end plate 122 can be understood as the angle β between the plate surface of the second wall portion 1322 and the side surface of the end plate 122. In other examples, the second wall portion 1322 is an arc, and the angle β between the second wall portion 1322 and the side surface of the end plate 122 can be understood as the angle β between the tangent line of one end of the second wall portion 1322 on the side surface of the end plate 122 and the side surface of the end plate 122.

[0113] In some examples, the angle β between the second wall portion 1322 and the side surface of the end plate 122 is 90°, and the second wall portion 1322 is perpendicular to the side surface of the end plate 122 .

[0114] In this embodiment, the angle β between one end of the second guide structure 132 and the side surface of the end plate 122 is greater than or equal to 30° and less than or equal to 90°; so that the second guide structure 132 can absorb more impact force, thereby improving the reliability of the battery device 1.

[0115] In some embodiments, along the height direction of the battery module 12 , the height H of the second guide structure 132 is 24 mm to 50 mm.

[0116] For example, along the height direction of the battery module 12 , the height H of the second guide structure 132 is 24 mm, 25 mm, 30 mm, 35 mm, 40 mm, 45 mm, 50 mm, etc.

[0117] In this embodiment, the height H of the second guide structure 132 is 24 mm to 50 mm; during the process of the battery module 12 being put into the box, the guiding distance between the first guide structure 131 and the second guide structure 132 is longer, thereby improving the reliability of the battery module 12 being put into the box and improving the reliability of the battery device 1.

[0118] In some embodiments, see Figure 5 , Fig.10 and Fig.11 The first guide structure 131 includes a first connection portion 1313 and a second connection portion 1312; an extension direction Y of the first connection portion 1313 intersects with an extension direction X of the second connection portion 1312, and the first connection portion 1313 is connected to the second connection portion 1312; the second connection portion 1312 is connected to the first side wall 115 of the battery case 11; the first connection portion 1313 has a guide surface 13132; the guide surface 13132 abuts against the second guide structure 132.

[0119] For example, the extension direction Y of the first connection portion 1313 is perpendicular to the extension direction X of the second connection portion 1312. The first connection portion 1313 and the second connection portion 1312 may be welded. The second connection portion 1312 may be connected to the first side wall 115 of the battery box 11 by bolts.

[0120] In some examples, the first connection portion 1313 has two opposite first side surfaces along the extension direction X of the second connection portion 1312. The first connection portion 1313 also has two opposite first end surfaces 13131 along the extension direction Y of the first connection portion 1313. The first connection portion 1313 also has two opposite first surfaces, and the first surfaces are perpendicular to the first end surfaces 13131 and the first side surfaces. The area of ​​the first surface is greater than the area of ​​the first side surface, and greater than the area of ​​the first end surface 13131.

[0121] Among them, one first surface is a guide surface 13132. Of course, the side surface of the first connecting portion 1313 can also be a guide surface 13132. The second connecting portion 1312 can be connected to another first surface. For example, when the first connecting portion 1313 is a flat plate, the first surface is the plate surface of the flat plate, the first side surface is perpendicular to the width direction of the flat plate, and the first end surface 13131 is perpendicular to the length direction of the flat plate.

[0122] In some examples, the second connection portion 1312 has two opposite second surfaces along the extension direction Y of the first connection portion 1313. The second connection portion 1312 also has two opposite second end surfaces along the extension direction of the second connection portion 1312. The first connection portion 1313 also has two opposite second side surfaces, and the second surface is perpendicular to both the second end surface and the second side surface. The area of ​​the second surface is greater than the area of ​​the second side surface, and greater than the area of ​​the second end surface.

[0123] A second side surface of the second connection portion 1312 is connected to the other first surface of the first connection portion 1313, and the second connection portion 1312 is located in the middle of the first surface of the first connection portion 1313. A second end surface of the second connection portion 1312 is flush with a first side surface of the first connection portion 1313. The connection between the other first side surface of the first connection portion 1313 and the two second surfaces of the second connection portion 1312 is set as a first chamfer 1314.

[0124] In this embodiment, the first guide structure 131 has a simple structure to facilitate cooperation with the second guide structure 132 .

[0125] In some embodiments, along the extension direction Y of the first connection portion 1313 , the first connection portion 1313 has two opposite first end surfaces 13131 ; the first end surface 13131 close to the top of the end plate 122 is a convex arc surface, and the radius of the arc surface is 3 mm to 8 mm.

[0126] For example, the radius of the arc surface is 3mm, 5mm, 6mm, 7mm, 8mm, etc. In some examples, the first end surface 13131 near the bottom of the end plate 122 is a convex arc surface. Of course, the first end surface 13131 near the bottom of the end plate 122 may not be set as an arc surface.

[0127] The cross section of the arc surface is semicircular and perpendicular to the extension direction X of the second connection portion 1312 .

[0128] In this embodiment, during the process of putting the battery module 12 into the box, the first end surface 13131 close to the top of the end plate 122 is a raised arc surface, which reduces the risk of the first guide structure 131 and the second guide structure 132 butting against each other, and facilitates the contact guidance of the first guide structure 131 and the second guide structure 132, thereby improving the reliability of the battery device 1.

[0129] In some embodiments, the first connection part 1313 and the second connection part 1312 are both plates, and one plate surface of the first connection part 1313 is a guide surface 13132; the first connection part 1313 is perpendicular to the second connection part 1312; the plate thickness of the first connection part 1313 is the same as the plate thickness of the second connection part 1312, and is 3mm~6mm; the side surface of the first connection part 1313 and the plate surface of the second connection part 1312 are set as a first chamfer 1314 at the connection point, and the radius of the first chamfer 1314 is 3mm~8mm.

[0130] The thickness of the first connection portion 1313 can be 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, etc. The radius of the first rounded corner 1314 is 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, 8mm, etc. The first connection portion 1313 is perpendicular to the second connection portion 1312, which means that the plate surface of the first connection portion 1313 is perpendicular to the plate surface of the second connection portion 1312.

[0131] In this embodiment, the thickness of the first connection part 1313 is the same as that of the second connection part 1312, which is 3 mm to 6 mm; this can make the strength of the first connection part 1313 and the second connection part 1312 higher. The radius of the first rounded corner 1314 is 3 mm to 8 mm, which can reduce the risk of the side surface of the first connection part 1313 and the plate surface of the second connection part 1312 being broken at the connection due to stress concentration, and reduce the possibility of the broken first guide structure 131 falling into the battery box 11 and damaging the battery cell 121, thereby improving the reliability of the battery device 1.

[0132] In some embodiments, the first guide structure 131 also includes a reinforcing portion 1311; the reinforcing portion 1311 is connected to the surface of the first connection portion 1313 away from the guide surface 13132, and is connected to the second connection portion 1312; along the extension direction of the second connection portion 1312, the thickness of the reinforcing portion 1311 is 2mm~5mm.

[0133] The reinforcing portion 1311 may be a reinforcing plate, a reinforcing rib, a reinforcing block, etc. For example, the reinforcing portion 1311 is connected to the second surface of the first connecting portion 1313. Along the extension direction of the second connecting portion 1312, the thickness of the reinforcing portion 1311 is 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm. In some examples, the reinforcing portion 1311 is a reinforcing plate; along the extension direction of the second connecting portion 1312, the thickness of the reinforcing portion 1311 is the plate thickness of the reinforcing plate.

[0134] In some examples, a reinforcing portion 1311 is disposed between the other first surface of the first connection portion 1313 and the second surface of the second connection portion 1312. A reinforcing portion 1311 may be disposed between the other first surface of the first connection portion 1313 and the other second surface of the second connection portion 1312, or no reinforcing portion 1311 may be disposed.

[0135] In this embodiment, the reinforcement portion 1311 can increase the reliability of the connection between the first connection portion 1313 and the second connection portion 1312 and reduce the risk of the first guide structure 131 breaking, thereby improving the reliability of the battery module 12 entering the box and improving the reliability of the battery device 1.

[0136] In some embodiments, see Figure 3 The battery box 11 includes a box frame 116 and a dividing beam 113; the dividing beam 113 is arranged in the box frame 116, and divides the interior of the box frame 116 into a plurality of battery compartments 114; wherein the box frame 116 and / or the dividing beam 113 include a first side wall 115; and at least one second guide structure 132 is arranged on each end plate 122.

[0137] In some examples, the partition beam 113 includes a first side wall 115. In other examples, the box frame 116 includes the first side wall 115. In other examples, the box frame 116 and the partition beam 113 both include the first side wall 115.

[0138] In some examples, a plurality of second guide structures 132 are provided on the end plate 122, and in this case, the first side wall 115 corresponding to the end plate 122 is provided with the same number of first guide structures 131 as the plurality of second guide structures 132 provided on the end plate 122. For example, at least one second guide structure 132 is provided on one side of the end plate 122; at least one second guide structure 132 may be provided on the other side of the end plate 122, or no second guide structure 132 is provided. In other examples, one second guide structure 132 is provided on the end plate 122.

[0139] In this embodiment, by cooperating with multiple pairs of first guide structures 131 and second guide structures 132, the reliability of the battery module 12 entering the box can be improved, and the battery module 12 can be restricted in the battery box 11 from multiple directions, thereby reducing the risk of lateral shaking of the battery module 12 in the battery box 11, thereby improving the reliability of the battery device 1.

[0140] In some embodiments, the first guiding structure 131 squeezes the second guiding structure 132 , so that the second guiding structure 132 is partially deformed.

[0141] It should be noted that when the battery device 1 collides, the second guide structure 132 will be completely deformed (ie, completely collapsed).

[0142] In this embodiment, the deformation of the second guide structure 132 generates elastic force to limit the lateral movement of the battery module 12 and the second guide structure 132 relative to the battery box 11 and the first guide structure 131 , thereby improving the reliability of the battery device 1 .

[0143] In some embodiments, see Figure 6 and Figure 7 The guide assembly 13 further includes a third guide structure 133 ; the third guide structure 133 is disposed on the side surface of the end plate 122 and is spaced apart from the bottom end of the second guide structure 132 .

[0144] In some examples, the third guide structure 133 has the same structure as the second guide structure 132, that is, the description of the third guide structure 133 can refer to the relevant description of the second guide structure 132. Of course, the structure of the third guide structure 133 and the second guide structure 132 may be different. Among them, the height of the third guide structure 133 is less than the height of the second guide structure 132, for example, the height of the third guide structure 133 is half the height of the second guide structure 132.

[0145] In some examples, a second guide structure 132 and a third guide structure 133 are provided on one side of the end plate 122; a second guide structure 132 and a third guide structure 133 may be provided on the other side of the end plate 122, or neither the second guide structure 132 nor the third guide structure 133 is provided.

[0146] During the process of putting the battery module 12 into the box, the first guide structure 131 on the battery box body 11 is in contact and extrusion with the third guide structure 133 on the end plate 122 of the battery module 12, which plays a role of pre-guiding the battery module. Afterwards, after the first guide structure 131 is separated from the third guide structure 133, due to the gap between the second guide structure 132 and the third guide structure 133, the first guide structure 131 moves between the gap between the third guide structure 133 and the second guide structure 132. Finally, the first guide structure 131 is in contact and extrusion with the second guide structure 132, and after the battery module 12 is completely loaded into the battery box body 11, the first guide structure 131 and the second guide structure 132 are always in contact and extrusion.

[0147] In this embodiment, when the battery module 12 is put into the box, the first guide structure 131 is contacted and guided before the third guide structure 133, and then contacted and guided with the second guide structure 132. At the height between the second guide structure 132 and the bottom of the battery module 12, the battery module 12 can enter the battery box 11 more reliably, so that the first guide structure 131 and the second guide structure 132 are contacted and guided, thereby improving the reliability of the battery device 1.

[0148] The above description is only an implementation method of the present application, and does not limit the patent protection scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A battery device, characterized in that: include: A battery box including a first side wall; A battery module is contained in the battery box; the battery module includes a battery cell and an end plate, and the end plate is located on one side of the battery cell; A guide assembly is located between the side of the end plate and the battery box, and includes a first guide structure and a second guide structure; the first guide structure is fixed to the battery box, and the second guide structure is fixed to the side of the end plate; the first guide structure abuts against the second guide structure; The second guide structure extends from the side of the end plate toward the first side wall of the battery box, and is bent toward a side away from the battery cell.

2. The battery device according to claim 1, characterized in that: The bending part of the second guide structure is arc-shaped.

3. The battery device according to claim 2, characterized in that: The second guide structure includes a first wall portion and a second wall portion; the first guide structure abuts against the first wall portion; one end of the second wall portion is connected to the side surface of the end plate, and the other end is connected to one end of the first wall portion; the other end of the first wall portion is suspended relative to the side surface of the end plate; The bending position of the second guide structure is the connection position between the first wall portion and the second wall portion.

4. The battery device according to claim 3, characterized in that: The first wall portion and the second wall portion are both plates; the first wall portion is perpendicular to the second wall portion, and the second wall portion is perpendicular to the side surface of the end plate; and the connection between the first wall portion and the second wall portion is chamfered.

5. The battery device according to claim 3, characterized in that: The second guide structure also includes a first arc segment, the first wall portion and the second wall portion are both second arc segments, the first arc segment and the second arc segment have the same curvature, and the first arc segment is smoothly connected between the first wall portion and the second wall portion.

6. The battery device according to claim 3, characterized in that: The first wall portion includes a first extension portion and a second extension portion located at the bottom of the first extension portion; the first extension portion is parallel to the side of the end plate, and the second extension portion is obliquely connected between the bottom of the first extension portion and the side of the end plate; the guide angle between the second extension portion and the side of the end plate is 13°~20°.

7. The battery device according to claim 3, characterized in that: The wall thickness of the second wall portion is greater than or equal to the wall thickness of the first wall portion; and the wall thickness of the first wall portion is 1.3 mm to 2.5 mm, and the wall thickness of the second wall portion is 1.5 mm to 2.5 mm.

8. The battery device according to claim 3, characterized in that: A line connecting one end of the second wall portion and the other end of the first wall portion is parallel to a plate surface of the end plate or is inclined relative to the end plate toward a side away from the battery cell.

9. The battery device according to claim 8, characterized in that: An included angle between the second wall portion and the side surface of the end plate is greater than or equal to 30° and less than or equal to 90°.

10. The battery device according to claim 1, characterized in that: Along the height direction of the battery module, the height of the second guide structure is 24 mm to 50 mm.

11. The battery device according to any one of claims 1 to 10, characterized in that: The first guiding structure includes a first connecting portion and a second connecting portion; an extension direction of the first connecting portion intersects with an extension direction of the second connecting portion, and the first connecting portion is connected to the second connecting portion; the second connecting portion is connected to the first side wall of the battery box; the first connecting portion has a guiding surface; and the guiding surface abuts against the second guiding structure.

12. The battery device according to claim 11, characterized in that: Along the extension direction of the first connection portion, the first connection portion has two opposite first end surfaces; the first end surface close to the top of the end plate is a convex arc surface, and the radius of the arc surface is 3mm~8mm.

13. The battery device according to claim 11, characterized in that: The first connecting part and the second connecting part are both plates, and one plate surface of the first connecting part is a guide surface; the first connecting part is perpendicular to the second connecting part; the plate thickness of the first connecting part is the same as that of the second connecting part, and is 3 mm to 6 mm; A first rounded corner is provided at a connection point between the side surface of the first connection portion and the plate surface of the second connection portion, and a radius of the first rounded corner is 3 mm to 8 mm.

14. The battery device according to claim 11, characterized in that: The first guide structure also includes a reinforcing portion; the reinforcing portion is connected to the surface of the first connecting portion away from the guiding surface and is connected to the second connecting portion; along the extension direction of the second connecting portion, the thickness of the reinforcing portion is 2mm~5mm.

15. The battery device according to any one of claims 1 to 10, characterized in that: The battery box includes a box frame and a dividing beam; the dividing beam is arranged in the box frame and divides the interior of the box frame into a plurality of battery compartments; Wherein, the box frame and / or the split beam include the first side wall; and at least one of the second guide structures is arranged on each of the end plates.

16. The battery device according to any one of claims 1 to 10, characterized in that: The first guide structure presses the second guide structure, so that the second guide structure is partially deformed.

17. The battery device according to any one of claims 1 to 10, characterized in that: The guide assembly further includes a third guide structure; the third guide structure is arranged on the side surface of the end plate and is spaced apart from the bottom end of the second guide structure.

18. An electrical equipment, characterized in that: include: The battery device according to any one of claims 1 to 17; The electrical device is electrically connected to the battery device.

Images