CN220830047U - Battery box, battery and power consumption device - Google Patents

Abstract

The application relates to a battery box body, a battery and an electric device, wherein the battery box body comprises a bottom plate, side beams, an expansion beam and a stress dispersing piece, wherein the bottom plate and the side beams are surrounded to form a containing groove for containing a battery monomer, the expansion beam is fixedly arranged in the containing groove, the expansion beam and the side beams are opposite to each other and are arranged at intervals, the stress dispersing piece is arranged between the expansion beam and the side beams, the stress dispersing piece comprises a main body part and a first protruding part protruding outwards from one side of the main body part, the main body part is connected with one of the expansion beam and the side beams, and the first protruding part is connected with the other one of the expansion beam and the side beams. The battery box body can play a role in dispersing and transmitting expansion force through the plurality of first protruding parts, the plurality of first protruding parts are arranged on the main body part, the structural integrity of the stress dispersing piece is higher, the installation is convenient, and the use cost is relatively low.

Description

Battery box, battery and power consumption device

Technical Field

The application relates to the technical field of secondary batteries, in particular to a battery box, a battery and an electric device.

Background

Energy conservation and emission reduction are key factors for sustainable development of production and life, so that the secondary battery is increasingly widely applied to daily life of people.

In the secondary battery, an expansion beam assembly is generally provided in a battery case in order to receive an expansion force generated by expansion of the battery. However, since the structure of the expansion beam assembly in the related art is complicated, there is a problem in that the production and installation efficiency is low.

Disclosure of Invention

Based on the above, it is necessary to provide a battery case, a battery, and an electric device, which solve the problems of the expansion beam assembly, such as complicated structure and low production and installation efficiency.

According to an aspect of the present application, there is provided a battery case including: the bottom plate and the side beams are surrounded by a containing groove for containing the battery monomer; the expansion beams are fixedly arranged in the accommodating grooves, and the expansion beams and the side beams are opposite to each other and are arranged at intervals; and the stress dispersing piece is arranged between the expansion beam and the side beam and comprises a main body part and a plurality of first protruding parts protruding outwards from one side of the main body part, the main body part is connected with one of the expansion beam and the side beam, and the first protruding parts are connected with the other of the expansion beam and the side beam.

The battery box body is characterized in that the stress dispersing piece is arranged between the expansion beam and the side beam, the main body part of the stress dispersing piece is connected with one of the expansion beam and the side beam, and the first protruding part of the stress dispersing piece is connected with the other one of the expansion beam and the side beam, so that the effect of dispersing and transmitting expansion force can be achieved through the plurality of first protruding parts, the plurality of first protruding parts are arranged on the main body part, the structural integrity of the stress dispersing piece is higher, the installation is convenient, and the use cost is relatively low.

In one embodiment, the battery box further comprises a longitudinal beam fixedly arranged in the accommodating groove, the longitudinal beam is positioned at one side of the expansion beam, which is away from the side beam, and the longitudinal extension direction of the longitudinal beam and the longitudinal extension direction of the expansion beam are crossed with each other; the main body part is connected with the expansion beam, and the first protruding part is connected with the side beam; the stress dispersing piece further comprises a mounting part arranged on one side of the main body part, which is away from the first protruding part, and the mounting part is connected with the longitudinal beam. The mounting part of the stress dispersing piece is connected with the longitudinal beam in the battery box body, so that the connection fastening degree of the stress dispersing piece is enhanced, and the effect of transmitting and dispersing expansion force is better.

In one embodiment, the expansion beam is provided with an avoidance groove, and the mounting part is at least partially penetrated in the avoidance groove. By means of the design, the installation part penetrates through the avoidance groove on the expansion beam, and each part is simple in structure and convenient to connect.

In one embodiment, a receiving cavity is formed in one side of the longitudinal beam, which faces the expansion beam, and a portion of the mounting portion, which penetrates through the avoidance groove, is received in the receiving cavity. The design is that the installation part is accommodated in the accommodating cavity, so that the installation space is saved.

In one embodiment, the side beam is provided with a protecting part in a protruding mode on one side of the expansion beam, the protecting part is located on one side of the side beam, which faces away from the bottom plate, and the protecting part protrudes into the avoidance groove and surrounds at least part of the mounting part. The protection part protruding into the avoidance groove is arranged to surround at least part of the installation part, so that a certain isolation protection effect can be achieved on the installation part, meanwhile, the protection part can be connected with the side wall of the avoidance groove, the connection fastening degree of the longitudinal beam and the expansion beam is improved, and the transmission and dispersion of expansion force are facilitated.

In one embodiment, a fixed seat protruding to the expansion beam is arranged on one side of the longitudinal beam, which is away from the bottom plate; the stress dispersing piece further comprises a second protruding portion which is formed by protruding the main body portion corresponding to the fixing base, the second protruding portion is abutted to the fixing base, a third protruding portion is arranged on one side, away from the fixing base, of the second protruding portion, and the third protruding portion is abutted to the boundary beam. By means of the design, the longitudinal beam is connected with the second protruding portion on the stress dispersing piece through the fixing base, the connection fastening degree of the stress dispersing piece is further increased, meanwhile, the third protruding portion which is abutted to the boundary beam is further arranged on the second protruding portion, and the effect of further transferring, dispersing and resisting expansion is achieved through the third protruding portion, the second protruding portion and the fixing base.

In one embodiment, a plurality of mounting holes are formed in the surface of one side, facing the expansion beam, of the main body portion, and the mounting holes are arranged in one-to-one correspondence with the first protruding portions. The mounting holes on the main body part are arranged in one-to-one correspondence with the first protruding parts, and the position of the main body part, where the first protruding parts are arranged, is connected with the expansion beam, so that the transmission of the stress dispersing piece to the expansion force is facilitated.

In one embodiment, the first projection has a cross-sectional dimension that gradually decreases in a direction in which the expansion beam is directed toward the side beam. With such a design, the installation and arrangement of the first protruding part are facilitated.

In one embodiment, a first weight-reducing groove is formed in one side, away from the main body, of the first protruding portion; and/or the surface of the main body part, which is away from the expansion beam, is provided with a second weight-reducing groove. Through setting up first heavy groove that subtracts on first bulge, set up the second on main part and subtract heavy groove, can alleviate the weight of stress dispersing piece under the prerequisite that does not influence the normal use of stress dispersing piece, the installation of stress dispersing piece of being convenient for.

According to another aspect of the present application, there is provided a battery including: a battery case as described above; and a plurality of battery cells accommodated in the accommodating groove.

The battery comprises the battery box body, the stress dispersing piece is arranged between the expansion beam and the side beam, the main body part of the stress dispersing piece is connected to one of the expansion beam and the side beam, the first protruding part of the stress dispersing piece is connected to the other of the expansion beam and the side beam, so that the effect of dispersing and transferring expansion force can be achieved through the plurality of first protruding parts, the plurality of first protruding parts are arranged on the main body part, the structural integrity of the stress dispersing piece is higher, the installation is convenient, and the use cost is relatively low.

According to still another aspect of the present application, an embodiment of the present application further provides an electrical device, including: such as the battery described above, is used to provide electrical energy.

The electric device provides electric energy by adopting the battery, and the cost of the electric device can be reduced due to the fact that the battery is convenient to install and relatively low in cost.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the accompanying drawings. In the drawings:

Fig. 1 is a schematic view of an overall structure of a vehicle according to an embodiment of the present application.

Fig. 2 is an exploded view of the overall structure of a battery according to an embodiment of the present application.

Fig. 3 is a schematic diagram of the overall structure of a battery case according to an embodiment of the present application.

Fig. 4 is an enlarged partial schematic view at a in fig. 3.

Fig. 5 is an enlarged partial exploded view at a in fig. 3.

Fig. 6 is a schematic view showing the overall structure of the stress dispersing member in the battery case according to an embodiment of the present application.

Fig. 7 is a schematic view showing the overall structure of the stress dispersing member in the battery case according to an embodiment of the present application.

Reference numerals in the specific embodiments are as follows:

1: an electric device;

10: a battery;

100: battery case, 110: bottom plate, 120: side beam, 130: accommodation groove, 140: expansion beam, 141: avoidance groove, 150: stress-dispersing member, 151: main body portion, 1511: mounting holes, 1512: second weight-reduction groove, 152: first protrusion, 1521: first weight reduction groove, 153: mounting portion, 154: second projection, 155: third projection, 160: stringers, 161: guard portion, 162: a fixing seat;

200: and (3) a battery cell.

Detailed Description

In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that, if any, these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., are used herein with respect to the orientation or positional relationship shown in the drawings, these terms refer to the orientation or positional relationship for convenience of description and simplicity of description only, and do not indicate or imply that the apparatus or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application.

Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.

In the present application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.

At present, with the development of technology, the application scene of the power battery is also more and more extensive, and the power battery is not only applied to energy storage power supply systems such as hydraulic power, firepower, wind power and solar power stations, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric automobiles, and a plurality of fields such as military equipment and aerospace. With the continuous expansion of the application field of power batteries, the safety of the batteries in use is also becoming an important point of attention.

In the use process of the battery, the battery unit generates expansion force due to heat expansion, and an expansion beam assembly is generally arranged in the battery box body to bear the expansion force. In the related art, an expansion beam and a plurality of small stringers are usually arranged in a battery box body, and the expansion beam and the small stringers are connected with the battery box body in a welding mode, so that expansion force is transmitted jointly by means of the expansion beam and the small stringers. However, the number of the small stringers is large, the structure is complex, and the production and installation efficiency is low.

Based on the above, in order to solve the problems that the structure of the expansion beam assembly is complicated and the production and installation efficiency is low, the embodiment of the application provides a battery box body, which is provided with a stress dispersing member between an expansion beam and a side beam, the stress dispersing member comprises a main body part and a plurality of first protruding parts protruding outwards from one side of the main body part, wherein the main body part of the stress dispersing member is connected with one of the expansion beam and the side beam, and the first protruding parts of the stress dispersing member are connected with the other one of the expansion beam and the side beam, and the effect of dispersing and transmitting expansion force can be achieved by means of the plurality of first protruding parts.

In such battery box, compare in a plurality of independent little longerons, a plurality of first bulge all set up on main part, and structural integrity is higher, need not to carry out one-to-one welding to a plurality of first bulge just can realize the fixed to the stress dispersion spare, has reduced the required process step of welding, and the cost is reduced, and adopts the stress dispersion spare can save a plurality of welding with the support, and the structure is simple relatively, installation convenient to use.

The battery box body provided by the embodiment of the application is used for providing an accommodating space for the battery monomer, and the battery box body can adopt various structures. The battery unit refers to a minimum unit for forming a battery, in the battery, a plurality of battery units can be arranged, and the plurality of battery units can be connected in series or in parallel, and the series-parallel connection refers to that the plurality of battery units are connected in series or in parallel. The battery units can be directly connected in series or in parallel or in series-parallel to form a battery module, and are accommodated in the battery box body; of course, a plurality of battery cells may be connected in series or parallel or series-parallel to form a battery module, and then connected in series or parallel or series-parallel to form a battery module, and the battery module is accommodated in the battery box. The battery may further include other structures, for example, a bus member for making electrical connection between the plurality of battery cells. Wherein each battery cell may be a secondary battery or a primary battery; but not limited to, lithium sulfur batteries, sodium ion batteries, or magnesium ion batteries. The battery cells may be cylindrical, flat, rectangular, or otherwise shaped.

The battery disclosed by the embodiment of the application can be used in electric devices such as vehicles, ships or aircrafts, but is not limited to the electric devices. The power supply system with the battery disclosed by the application can be used for forming the power utilization device, so that the cooling efficiency of the battery is improved, the battery meets the requirements of increasing high-power discharge, rapid charge and the like, and the stability of the battery performance and the service life of the battery are improved.

The embodiment of the application also provides an electric device using the battery as a power supply, wherein the electric device can be, but is not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft and the like. Among them, the electric toy may include fixed or mobile electric toys, such as game machines, electric car toys, electric ship toys, electric plane toys, and the like, and the spacecraft may include planes, rockets, space planes, and spacecraft, and the like. The electric automobile can be a pure electric automobile, a hybrid electric automobile or a range-extended automobile and the like. The interior of the automobile is provided with a battery, which can be arranged at the bottom or at the head or at the tail of the automobile. The battery may be used for power supply of the automobile, for example, the battery may be used as an operating power source of the automobile. The vehicle may also include a controller and a motor, the controller being configured to control the battery to power the motor, for example, for operating power requirements during start-up, navigation, and travel of the vehicle. In some embodiments of the application, the battery may be used not only as an operating power source for the vehicle, but also as a driving power source for the vehicle, instead of or in part instead of fuel oil or natural gas, to provide driving power for the vehicle.

For convenience of description, the following embodiment will take an electric device 1 according to an embodiment of the present application as an example of a vehicle. Referring to fig. 1, fig. 1 is a schematic diagram of an overall structure of a vehicle according to an embodiment of the application.

The vehicle can be a fuel oil vehicle, a fuel gas vehicle or a new energy vehicle, wherein the new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle or a range-extending vehicle and the like. The battery 10 is provided in the interior of the vehicle, and the battery 10 may be provided at the bottom or the head or the tail of the vehicle. The battery 10 may be used for power supply of a vehicle, for example, the battery 10 may be used as an operating power source of the vehicle. The vehicle may also include a controller and a motor, the controller being configured to control the battery 10 to power the motor, for example, for operating power requirements during start-up, navigation, and travel of the vehicle. In some embodiments of the present application, the battery 10 may be used not only as an operating power source for a vehicle, but also as a driving power source for a vehicle to supply driving power to the vehicle instead of or in part of fuel oil or natural gas.

Referring to fig. 2, fig. 2 is an exploded view of the overall structure of a battery 10 according to an embodiment of the present application.

The battery 10 may be used as a power supply system of the power consumption device 1, where the battery 10 includes a battery case 100 and a plurality of battery cells 200, and the battery cells 200 are disposed in the battery case 100. The battery cell 200 refers to the smallest unit constituting the battery 10, and in the battery 10, there may be a plurality of battery cells 200, and the plurality of battery cells 200 may be connected in series or in parallel or in series-parallel, and the series-parallel refers to both of the plurality of battery cells 200. The plurality of battery cells 200 can be directly connected in series or parallel or connected in series to form a battery module, and are accommodated in the battery box 100; of course, a plurality of battery cells 200 may be connected in series or parallel or series-parallel to form a battery module, and then connected in series or parallel or series-parallel to form a battery module, and the battery module may be accommodated in the battery case 100.

Fig. 3 is a schematic view of the overall structure of a battery case 100 according to an embodiment of the present application, fig. 4 is a partially enlarged schematic view of a portion a in fig. 3, and fig. 5 is a partially enlarged exploded view of a portion a in fig. 3.

The battery case 100 is used to provide an accommodating space for the battery cells 200, and the battery case 100 may have various structures. Referring to fig. 3 to 5, an embodiment of the present application provides a battery case 100, the battery case 100 including a base plate 110, a side rail 120, an expansion beam 140, and a stress dispersing member 150, the base plate 110 and the side rail 120 enclosing a receiving groove 130 for receiving a battery cell 200, the expansion beam 140 being fixedly disposed in the receiving groove 130, the expansion beam 140 and the side rail 120 being opposite to each other and disposed at a distance from each other, the stress dispersing member 150 being disposed between the expansion beam 140 and the side rail 120, the stress dispersing member 150 including a main body portion 151 and a plurality of first protrusions 152 protruding outward from one side of the main body portion 151, the main body portion 151 being connected to one of the expansion beam 140 and the side rail 120, the first protrusions 152 being connected to the other of the expansion beam 140 and the side rail 120.

That is, in the battery case 100, the number of the side beams 120 may be several, the side beams 120 are connected end to form a relatively closed frame, two sides of the frame are opened, the bottom plate 110 covers the opening at the bottom of the frame, and the side beams 120 and the bottom plate are enclosed together to form the accommodating groove 130 for accommodating the battery cell 200, so as to isolate the internal environment of the frame from the external environment. The receiving groove 130 may also be used to receive a cooling system or the like. The bottom plate 110 and the side sill 120 may be separate members, and the bottom plate 110 and the side sill 120 may be integrated, without limitation. The frame formed by surrounding the side beams 120 can be in various shapes and various sizes, such as cuboid, cylinder, hexagonal prism, etc. Specifically, the shape of the frame may be determined according to the specific shape and size of the battery 10 module, and the shape of the bottom plate 110 may be adapted to the shape of the frame to fit the frame. Thus, the battery box 100 is not easy to deform when being extruded and collided, so that the battery box 100 has higher structural strength.

The expansion beam 140 is disposed in the receiving groove 130 and opposite to and spaced apart from the side beam 120, the stress dispersing member 150 is disposed between the expansion beam 140 and the side beam 120, the main body portion 151 is connected to one of the expansion beam 140 and the side beam 120, the first protrusion 152 is connected to the other of the expansion beam 140 and the side beam 120, and illustratively, the main body portion 151 of the stress dispersing member 150 is connected to the expansion beam 140, and the first protrusion 152 of the stress dispersing member 150 is connected to the side beam 120. The battery cell 200 in the receiving groove 130 presses the expansion beam 140 after being expanded, and the expansion force received by the expansion beam 140 is transmitted to the side beam 120 through the expansion beam 140 and the stress dispersing member 150, thereby transmitting, dispersing and resisting the expansion force. The expansion beam 140 may be detachably fixed in the receiving groove 130, and the main body 151 of the stress dispersing member 150 may be detachably connected to the expansion beam 140.

The main body 151 of the stress dispersing member 150 may be a back plate, the first protrusion 152 of the stress dispersing member 150 may be a protrusion, and the main body 151 and the first protrusion 152 may be die-cast of a metal material, such as an aluminum alloy. The plurality of first protrusions 152 on the stress dispersing member 150 are respectively disposed at different positions on the main body portion 151 according to the sizes of the side beam 120 and the expansion beam 140, and the first protrusions 152 may be regularly arranged on the main body portion 151, and for example, when the surface of the main body portion 151 is an axisymmetric pattern, the plurality of first protrusions 152 are symmetrically arranged along the symmetry axis of the surface of the main body portion 151, so that an effect of uniformly transmitting expansion force can be achieved. Similarly, the number of the stress dispersing members 150 in the battery case 100 may be one or more, and the plurality of the stress dispersing members 150 are connected at different positions between the expansion beam 140 and the side beam 120, so that the expansion force received by the expansion beam 140 can be uniformly transferred to the side beam 120 via the stress dispersing members 150 at the different positions.

The materials of the bottom plate 110, the side beams 120 and the expansion beams 140 may be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not particularly limited in the embodiment of the present application. In some embodiments, insulation may also be provided on the inner sides of the bottom plate 110, the side beams 120, and the expansion beams 140, and the insulation may be used to isolate the electrical connection members within the battery case 100 from the bottom plate 110, the side beams 120, and the expansion beams 140 to reduce the risk of short circuits. By way of example, the insulation may be plastic, rubber, or the like.

In the battery case 100 according to the embodiment of the application, the stress dispersing member 150 is disposed between the expansion beam 140 and the side beam 120, the main body 151 of the stress dispersing member 150 is connected to one of the expansion beam 140 and the side beam 120, and the first protrusion 152 of the stress dispersing member 150 is connected to the other of the expansion beam 140 and the side beam 120, so that the effect of dispersing and transmitting expansion force can be achieved through the plurality of first protrusions 152, and the plurality of first protrusions 152 are disposed on the main body 151, so that the structural integrity of the stress dispersing member 150 is higher. Compared with the prior art that the small longitudinal beams are welded between the expansion beam 140 and the side beam 120, the installation is convenient, and the use cost is relatively low.

In some embodiments, optionally, the battery case 100 further includes a longitudinal beam 160 fixedly disposed in the accommodating groove 130, the longitudinal beam 160 is located on a side of the expansion beam 140 facing away from the side beam 120, and the longitudinal extension direction of the longitudinal beam 160 and the longitudinal extension direction of the expansion beam 140 intersect each other; the stress dispersing member 150 further includes a mounting portion 153 disposed on a side of the main body portion 151 facing away from the first protruding portion 152, the mounting portion 153 being connected to the side member 160.

The stringers 160 are disposed in the receiving grooves 130 and are connected with the inner side surface of the bottom plate 110, and the stringers 160 can reinforce the structures of the bottom plate 110 and the side rails 120 to improve the overall structural strength of the battery case 100, and at the same time, the stringers 160 can also play a role of separating the receiving grooves 130 so as to better dispose the battery cells 200 in the receiving grooves 130. The longitudinal beam 160 is located at a side of the expansion beam 140 facing away from the side beam 120, and the longitudinal extension direction of the longitudinal beam 160 and the longitudinal extension direction of the expansion beam 140 intersect each other, i.e. a certain angle is formed between the longitudinal extension direction of the longitudinal beam 160 and the longitudinal extension direction of the expansion beam 140, which may be an acute angle, a right angle or an obtuse angle, and the connection manner of the longitudinal beam 160 and the bottom plate 110 is not limited. The mounting portion 153 of the stress dispersing member 150 is connected to the side member 160, and the mounting portion 153 may pass over the expansion beam 140 so as to be connected to the side member 160, which is not limited herein. By connecting the mounting portion 153 of the stress dispersing member 150 to the side member 160 in the battery case 100, the degree of connection fastening of the stress dispersing member 150 is enhanced, and the effect of transmitting and dispersing the expansion force is improved. The mounting portion 153 and the longitudinal beam 160 may be provided with corresponding connection fixing holes, and the connecting member sequentially penetrates through the connection fixing holes of the longitudinal beam 160 and the connection fixing holes of the mounting portion 153 to fixedly connect the mounting portion 153 with the longitudinal beam 160.

In some embodiments, as shown in fig. 3, optionally, the expansion beam 140 is provided with a relief groove 141, and the mounting portion 153 at least partially penetrates the relief groove 141.

The expansion beam 140 is provided with the avoiding groove 141 corresponding to the mounting part 153, and the shape and the size of the avoiding groove 141 can be adaptively set for the mounting part 153, so that the mounting part 153 can be at least partially penetrated in the avoiding groove 141 on the expansion beam 140, and the structure of each part is simple and the connection is convenient.

On the basis of the above embodiment, the side member 160 is provided with a receiving cavity on the side facing the expansion beam 140, and the portion of the mounting portion 153 passing through the escape groove 141 is received in the receiving cavity.

The shape and size of the receiving cavity may be adapted to the mounting portion 153 so that a portion of the mounting portion 153 passing through the escape groove 141 may be received in the receiving cavity. By such design, the part of the mounting part 153 passing through the avoiding groove 141 can be accommodated in the accommodating cavity, so that the mounting space is saved.

With continued reference to fig. 3, in some embodiments, optionally, a side of the side member 160 facing the expansion beam 140 is provided with a protecting portion 161 protruding, the protecting portion 161 being located on a side of the side member 160 facing away from the bottom plate 110, the protecting portion 161 protruding into the relief groove 141 and surrounding at least a portion of the mounting portion 153.

Because the side of longeron 160 towards expansion beam 140 is equipped with accommodates the chamber, makes the partial roof beam wall of longeron 160 set up along the extension direction protrusion of longeron 160, can form the protection part 161 that the protrusion set up, encircles the at least part of installation department 153 through setting up the protection part 161 that stretches to dodging in the groove 141, can play certain isolated guard action to installation department 153, simultaneously, protection part 161 can be connected with dodging the lateral wall in groove 141, has improved the connection fastening degree of longeron 160 and expansion beam 140, is favorable to transmitting and dispersion inflation power.

In some embodiments, optionally, a side of the stringers 160 facing away from the floor panel 110 is provided with a fixing seat 162 protruding onto the expansion beams 140; the stress dispersing member 150 further includes a second protruding portion 154 protruding from the main body 151 and corresponding to the fixing seat 162, where the second protruding portion 154 abuts against the fixing seat 162, and a third protruding portion 155 is disposed on a side of the second protruding portion 154 facing away from the fixing seat 162, and the third protruding portion 155 abuts against the boundary beam 120.

The fixing base 162 passes over the expansion beam 140 and abuts against the second protruding portion 154 of the stress dispersing member 150, so that the longitudinal beam 160 is connected with the second protruding portion 154 on the stress dispersing member 150 by means of the fixing base 162, the connection fastening degree of the stress dispersing member 150 is further increased, meanwhile, the third protruding portion 155 abutting against the side beam 120 is further arranged on the second protruding portion 154, and the effect of further transmitting, dispersing and resisting expansion is achieved through the third protruding portion 155, the second protruding portion 154 and the fixing base 162. In other embodiments, the fixing base 162 may be disposed at the same time as the protecting portion 161, and in this case, a part of the structure of the fixing base 162 may extend from the protecting portion 161 of the longitudinal beam 160 to a side facing away from the bottom plate 110.

Fig. 6 is a schematic view showing the overall structure of the stress dispersing member 150 in the battery case 100 according to one embodiment of the present application, and fig. 7 is a schematic view showing the overall structure of the stress dispersing member 150 in the battery case 100 according to another embodiment of the present application.

Referring to fig. 3 in combination with fig. 6 and fig. 7, in some embodiments, optionally, a plurality of mounting holes 1511 are provided on a surface of the main body 151 facing the expansion beam 140, and the mounting holes 1511 are disposed in one-to-one correspondence with the first protruding portions 152.

The mounting hole 1511 is disposed on the main body 151, the mounting hole 1511 may penetrate a part of the structure of the main body 151 or may completely penetrate the main body 151, and the mounting hole 1511 may also partially extend into the first protruding portion 152 to better fix a position on the main body 151 where the first protruding portion 152 is disposed. By arranging the mounting holes 1511 on the main body 151 in one-to-one correspondence with the first protruding portions 152, the position of the main body 151 where the first protruding portions 152 are arranged is connected with the expansion beam 140, which is beneficial for the transmission of the expansion force by the stress dispersing element 150. The expansion beam 140 is provided with a connection fixing hole corresponding to the mounting hole 1511, and the connection member sequentially penetrates through the connection fixing hole on the expansion beam 140 and the mounting hole 1511 on the main body 151 to fixedly connect the main body 151 and the expansion beam 140.

In the process of installing the stress dispersing member 150, firstly, the installation portion 153 of the stress dispersing member 150 is inserted into the accommodating cavity of the longitudinal beam 160, the installation portion 153 and the longitudinal beam 160 are fixedly connected together by sequentially penetrating through the fixing holes in the longitudinal beam 160 and the installation portion 153 through bolts, then, the installation portion 153 is partially inserted into the avoiding groove 141 of the expansion beam 140, the main body portion 151 is abutted against one side of the expansion beam 140, which is away from the longitudinal beam 160, simultaneously, the plurality of first protruding portions 152 and the third protruding portions 155 are abutted against the side beam, and then, the main body portion 151 and the expansion beam 140 are fixedly connected together through bolts sequentially penetrating through the connecting fixing holes in the expansion beam 140 and the fixing holes 1511 in the main body portion 151, so that the stress dispersing member 150 is assembled. If a plurality of stringers 160 are disposed in the battery case 100, a plurality of stress dispersing members 150 may be installed at the positions of the stringers 160 in a one-to-one correspondence manner, and the installation process will not be repeated.

As shown in fig. 7, in some embodiments, optionally, the cross-sectional dimension of the first projection 152 gradually decreases in a direction in which the expansion beam 140 points toward the boundary beam 120.

The cross-sectional shape of the first protruding portion 152 may be circular, oval, quasi-circular or polygonal along the direction in which the expansion beam 140 points to the side beam 120, and the cross-sectional size of the first protruding portion 152 gradually decreases along the direction in which the expansion beam 140 points to the side beam 120, so that the installation and the arrangement of the first protruding portion 152 are facilitated.

In some embodiments, optionally, a side of the first protruding portion 152 facing away from the main body portion 151 is provided with a first weight-reducing groove 1521; and/or the surface of the body portion 151 facing away from the expansion beam 140 is provided with a second weight-reducing groove 1512.

In order to reduce the weight of the stress splitter 150, the first protrusion 152 is provided with the first weight reduction groove 1521, and the main body 151 is provided with the second weight reduction groove 1512, so that the weight of the stress splitter 150 can be reduced without affecting the normal use of the stress splitter 150, and the installation of the stress splitter 150 can be facilitated. The cross-sectional shapes of the first weight-reducing groove 1521 and the second weight-reducing groove 1512 are not limited, and the first weight-reducing groove 1521 does not penetrate the first protruding portion 152, and the second weight-reducing groove 1512 does not penetrate the main body portion 151.

The embodiment of the application further provides a battery 10, where the battery 10 includes the battery case 100 and a plurality of battery cells 200 in any of the embodiments, and the battery cells 200 are accommodated in the accommodating groove 130.

By adopting the battery case 100 of the embodiment of the application, the stress dispersing member 150 is disposed between the expansion beam 140 and the side beam 120, the main body 151 of the stress dispersing member 150 is connected to one of the expansion beam 140 and the side beam 120, and the first protrusion 152 of the stress dispersing member 150 is connected to the other of the expansion beam 140 and the side beam 120, so that the effect of dispersing and transmitting expansion force can be achieved through the plurality of first protrusions 152, and the plurality of first protrusions 152 are disposed on the main body 151, so that the structural integrity of the stress dispersing member 150 is higher, the installation is convenient, and the use cost is relatively low.

The embodiment of the present application also provides an electric device 1, where the electric device 1 includes the battery 10 as in the above embodiment, and the battery 10 is used to provide electric energy.

The power consumption device 1 according to the embodiment of the application provides the electric energy by adopting the battery 10, and the cost of the power consumption device 1 can be reduced due to the fact that the battery 10 is convenient to install and the use cost is relatively low.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims (11)

1. A battery case (100), characterized by comprising:

The battery pack comprises a bottom plate (110) and side beams (120), wherein an accommodating groove (130) for accommodating a battery cell (200) is formed in the bottom plate (110) and the side beams (120) in a surrounding mode;

An expansion beam (140) fixedly arranged in the accommodating groove (130), wherein the expansion beam (140) and the side beam (120) are opposite to each other and are arranged at intervals; and

The stress dispersing piece (150) is arranged between the expansion beam (140) and the side beam (120), the stress dispersing piece (150) comprises a main body part (151) and a plurality of first protruding parts (152) protruding outwards from one side of the main body part (151), the main body part (151) is connected with one of the expansion beam (140) and the side beam (120), and the first protruding parts (152) are connected with the other one of the expansion beam (140) and the side beam (120).

2. The battery box (100) according to claim 1, wherein the battery box (100) further comprises a longitudinal beam (160) fixedly arranged in the accommodating groove (130), the longitudinal beam (160) is positioned at one side of the expansion beam (140) facing away from the side beam (120), and the longitudinal extension direction of the longitudinal beam (160) and the longitudinal extension direction of the expansion beam (140) intersect each other;

the main body part (151) is connected to the expansion beam (140), and the first protruding part (152) is connected to the side beam (120);

The stress dispersing member (150) further comprises a mounting portion (153) arranged on one side of the main body portion (151) away from the first protruding portion (152), and the mounting portion (153) is connected to the longitudinal beam (160).

3. The battery box (100) according to claim 2, wherein the expansion beam (140) is provided with an avoidance groove (141), and the mounting portion (153) is at least partially penetrating through the avoidance groove (141).

4. The battery box (100) according to claim 3, wherein a receiving cavity is provided on a side of the side member (160) facing the expansion beam (140), and a portion of the mounting portion (153) passing through the escape groove (141) is received in the receiving cavity.

5. The battery box (100) according to claim 4, wherein a side of the longitudinal beam (160) facing the expansion beam (140) is provided with a protecting portion (161) in a protruding manner, the protecting portion (161) is located on a side of the longitudinal beam (160) facing away from the bottom plate (110), and the protecting portion (161) protrudes into the avoiding groove (141) and surrounds at least part of the mounting portion (153).

6. The battery box (100) according to claim 2, wherein a side of the longitudinal beam (160) facing away from the bottom plate (110) is provided with a fixing seat (162) protruding onto the expansion beam (140);

The stress dispersing piece (150) further comprises a second protruding portion (154) protruding from the main body portion (151) corresponding to the fixing seat (162), the second protruding portion (154) is abutted to the fixing seat (162), a third protruding portion (155) is arranged on one side, deviating from the fixing seat (162), of the second protruding portion (154), and the third protruding portion (155) is abutted to the side beam (120).

7. The battery case (100) according to any one of claims 1 to 6, wherein,

A plurality of mounting holes (1511) are formed in the surface of one side, facing the expansion beam (140), of the main body portion (151), and the mounting holes (1511) are arranged in one-to-one correspondence with the first protruding portions (152).

8. The battery case (100) according to any one of claims 1 to 6, wherein the first projection (152) gradually decreases in cross-sectional dimension in a direction in which the expansion beam (140) is directed toward the side beam (120).

9. The battery box (100) according to any one of claims 1 to 6, wherein a side of the first protruding portion (152) facing away from the main body portion (151) is provided with a first weight-reduction groove (1521); and/or

A second weight-reducing groove (1512) is formed in the surface of the main body part (151) facing away from the expansion beam (140).

10. A battery (10), characterized by comprising:

The battery case (100) according to any one of claims 1 to 9; and

And a plurality of battery cells (200) accommodated in the accommodation groove (130).

11. An electric device (1), characterized by comprising:

the battery (10) according to claim 10, the battery (10) being adapted to provide electrical energy.