CN218351622U - Box body assembly for battery, battery and power utilization device - Google Patents

Abstract

The application discloses a box subassembly, battery and electric installation for battery belongs to battery technical field. Wherein, the box subassembly includes: box and temperature regulation board, the box includes the box frame, the box frame surrounds out accommodation space, temperature regulation board includes end plate portion and side plate portion, end plate portion locates the axial one end of box frame, just the end plate portion with accommodation space intercommunication, the side plate portion is connected the edge of end plate portion, just the side plate portion backstop the internal perisporium and/or the periphery wall of box frame. Through the cooperation of the side plate part of the temperature adjusting plate and the circumferential wall backstop of the box body frame, the stability of the relative position of the temperature adjusting plate and the box body can be improved, and the subsequent connection between the temperature adjusting plate and the box body is facilitated.

Description

Box body assembly for battery, battery and power utilization device

Technical Field

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

Background

In a general power battery, in order to improve the operational reliability and stability of the battery, a thermal management component is generally provided to adjust the temperature of a battery cell, so that the battery cell can operate at a suitable temperature and obtain sufficient power. The thermal management component usually includes a temperature adjustment plate, and the connection between the temperature adjustment plate and the box body is inconvenient and needs to be improved.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a box subassembly, battery and electric installation for battery, is favorable to being connected of box and temperature regulation board.

In a first aspect, an embodiment of the present application provides a box assembly for a battery, including: the box body comprises a box body frame, and the box body frame surrounds an accommodating space; and a temperature adjusting plate, the temperature adjusting plate includes end plate portion and side plate portion, end plate portion locates the axial one end of box frame, just end plate portion with the accommodation space intercommunication, side plate portion connects the edge of end plate portion, just side plate portion backstop the internal perisporium and/or the periphery wall of box frame.

In above-mentioned technical scheme, the cooperation of the lateral plate portion through adopting the temperature regulation board and the perisporium backstop of box frame can improve the stability of temperature regulation board and box relative position, is favorable to subsequent connection between them. When welding connection is adopted, the risk that relative positions of the welding connection and the welding connection are changed due to high welding temperature can be reduced, the welding yield is improved, and the probability of welding failure is reduced.

In some embodiments, the side plate portion is tightly stopped against an inner peripheral wall and/or an outer peripheral wall of the box body side frame.

In the technical scheme, the stopping limit stability can be improved, and the subsequent connection of the temperature adjusting plate and the box body is facilitated. In addition, when the side plate part and the box body frame are tightly stopped, and the temperature adjusting plate and the box body are connected in a welding mode, the matching interface of the side plate part and the box body frame can be increased, the welding area is increased, and the welding yield is improved.

In some embodiments, the box body frame is formed by sequentially connecting a plurality of frame edges end to end, the extending directions of every two adjacent frame edges are different, and the side plate part is stopped by the inner side wall and/or the outer side wall of at least two frame edges.

In the technical scheme, the stopping limit can be realized from multiple directions, the stability of the stopping limit is further improved, and the subsequent connection of the temperature adjusting plate and the box body is more facilitated.

In some embodiments, each two opposite frame sides of the plurality of frame sides form a set of frame sides, and the outer side wall of each frame side of at least one set of frame sides is respectively stopped by the side plate part; and/or the side plate part is respectively stopped by the inner side wall of each frame edge in at least one group of frame edge groups.

In the technical scheme, the stop limit can be realized from at least one opposite side, and at least one group of clamping tools can be omitted when the box body and the temperature adjusting plate are assembled, so that the production efficiency is improved, and the production cost is reduced.

In some embodiments, the outer side wall of each of the rims is stopped by the side plate portion; and/or the inner side wall of each frame edge is respectively stopped by the side plate part.

In the technical scheme, the stop limit can be realized in all directions, and more clamping tools can be omitted when the box body and the temperature adjusting plate are assembled, so that the improvement of the production efficiency is facilitated, and the production cost is reduced.

In some embodiments, the side panel portion is configured as an annular side panel around the entire circumference of the end panel portion edge.

In the technical scheme, the structural strength of the annular side plate part is better, a more effective stop limiting effect can be achieved, and the subsequent connection of the temperature adjusting plate and the box body is more facilitated.

In some embodiments, the side plate portion is provided around a peripheral wall of the box body side frame.

In the technical scheme, the assembly and the connection of the box body and the temperature adjusting plate are facilitated.

In some embodiments, the shape of the side plate portion matches the shape of the peripheral wall of the case frame.

In the technical scheme, the side plate part and the peripheral wall of the box frame can realize tight backstop or even clearance fit, so that a more effective backstop limiting effect can be achieved, and the subsequent connection of the temperature adjusting plate and the box body is more facilitated.

In some embodiments, at least part of the side plate portion is closely stopped with a peripheral wall of the case bezel.

In the technical scheme, the stop limiting effect can be more effectively achieved, and the temperature adjusting plate is more favorable for subsequent connection with the box body. Moreover, when the temperature adjusting plate is connected with the box body in a welding mode, the matching interface of the temperature adjusting plate and the box body can be enlarged, the welding area is increased, and the welding yield is improved.

In some embodiments, a fit clearance between one end of the side plate portion, which is far away from the end plate portion, and the outer peripheral wall of the box body frame is larger than a fit clearance between other positions of the side plate portion and the outer peripheral wall of the box body frame.

In the technical scheme, the end, far away from the end plate part, of the side plate part is equivalent to a flaring form, so that the temperature adjusting plate is sleeved on the frame of the box body, the assembling difficulty is reduced, and the production efficiency is improved.

In some embodiments, the side plate portion includes a straight line portion closely stopping the outer peripheral wall of the box body side frame, and a flared portion connected between the flared portion and the end plate portion, the flared portion gradually extending in a direction away from the end plate portion toward a direction away from the box body side frame.

In the technical scheme, the side plate part is simple in structure and convenient to process. Moreover, through setting up the straightway, can play the spacing effect of more effectual backstop, be favorable to the follow-up connection of temperature regulating plate and box more. And, through setting up the flaring section, be favorable to establishing the temperature regulating plate cover on the box frame, reduce the assembly degree of difficulty, improve production efficiency.

In some embodiments, the side panel portion is disposed around an inner peripheral wall of the cabinet bezel.

In the technical scheme, the side plate part of the temperature adjusting plate can be positioned in the box frame, so that the sealing performance of the box body is guaranteed, and the reliability of the battery is improved.

In some embodiments, a fit clearance between one end of the side plate portion close to the end plate portion and the inner peripheral wall of the box frame is larger than a fit clearance between other positions of the side plate portion and the inner peripheral wall of the box frame.

In the technical scheme, one end of the side plate part, which is close to the end plate part, is equivalent to a necking form, so that the box body frame is favorably sleeved outside the temperature adjusting plate, the assembly difficulty is reduced, and the production efficiency is improved.

In some embodiments, in the axial direction of the case frame, the extension height H of the side plate portion is smaller than the extension height H of the case frame.

In the technical scheme, materials can be saved, and unnecessary interference influence caused by high height of the side plate part is avoided.

In some embodiments, the side plate portion has a thickness equal to a thickness of the end plate portion.

In above-mentioned technical scheme, under the certain prerequisite of the thickness of end plate portion, set up to the thickness with end plate portion through the thickness with the side plate portion and equal, can guarantee the structural strength of side plate portion betterly to guarantee the spacing reliability of side plate portion.

In some embodiments, the side plate portion and the end plate portion are a unitary piece.

In the technical scheme, the temperature adjusting plate is convenient to process, the structural reliability of the side plate part is good, the limiting stability is good, the sealing performance of the temperature adjusting plate can be improved, and the reliability of the battery is improved.

In some embodiments, the box body further includes a box body bottom plate connected to the axial end of the box body side frame and located on a side of the end plate portion away from the accommodating space.

In the technical scheme, the temperature adjusting plate can be protected by arranging the box body bottom plate, the working reliability of the temperature adjusting plate is improved, and the temperature adjusting efficiency of the temperature adjusting plate on the battery can not be reduced by arranging the box body bottom plate.

In some embodiments, the end plate portion has a fluid channel therein, and the temperature-regulating plate has a liquid inlet and a liquid outlet communicating with the fluid channel.

In above-mentioned technical scheme, through setting up inlet and liquid outlet, can realize the fluid circulation in the fluid passage to can realize temperature regulation of temperature regulating plate to battery monomer through the temperature of adjusting the fluid that circulates in the fluid passage.

In some embodiments, the case is welded to the temperature regulation plate.

In the technical scheme, the connection reliability of the box body and the temperature adjusting plate can be improved, the assembly process of the box body and the temperature adjusting plate is omitted, the production efficiency of the box body assembly is improved, the safety problems such as connection gaps formed when the box body and the temperature adjusting plate are connected through the connecting piece are avoided, and the reliability of the battery is improved.

In some embodiments, the case is integrally brazed with the temperature-regulating plate.

In the technical scheme, the connection reliability of the box body and the temperature adjusting plate can be well guaranteed, the box body can be sent into the welding furnace to be automatically carried out, manual operation is omitted, the labor cost is reduced, and batch production is facilitated.

In a second aspect, an embodiment of the present application further provides a battery, which includes a single battery and the above-mentioned box assembly for a battery, where the single battery is disposed in the accommodating space.

In a third aspect, an embodiment of the present application further provides an electric device, including the above battery.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 is a schematic structural diagram of a vehicle provided in some embodiments of the present application;

fig. 2 is an exploded view of a battery according to some embodiments of the present application;

FIG. 3 is a schematic view of a case assembly provided by some embodiments of the present application;

FIG. 4 is an enlarged fragmentary view of the tank assembly shown in FIG. 3;

FIG. 5 is an enlarged partial view of a housing assembly provided in accordance with certain embodiments of the present application;

FIG. 6 is a schematic view of a case assembly provided by some embodiments of the present application;

FIG. 7 is a top view of the box assembly shown in FIG. 6;

FIG. 8 is a left side elevational view of the tank assembly illustrated in FIG. 6;

FIG. 9 is a partial cross-sectional view of a case assembly provided in accordance with certain embodiments of the present application;

FIG. 10 is a partial cross-sectional view of a case assembly according to further embodiments of the present application.

Icon: 1000-a vehicle; 100-a battery; 10-a box body; 11-a first tank body; 12-a second tank body; 13-box frame; 131-an inner circumferential wall; 132-a peripheral wall; 133-frame side; 14-a containment space; 15-box bottom plate; 20-a battery cell; 30-temperature adjusting plate; 31-end plate portion; 32-side plate portion; 321-straight line segment; 322-a flared section; 40-a box assembly; 200-a controller; 300-a motor; z-first direction.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the description and claims of this application or in the foregoing drawings are used for distinguishing between different elements and not for describing a particular sequential or chronological order.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

In the description of the present application, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "attached" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

The term "and/or" in this application is only one kind of association relationship describing the associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this application generally indicates that the former and latter related objects are in an "or" relationship.

In the embodiments of the present application, like reference numerals denote like parts, and a detailed description of the same parts is omitted in different embodiments for the sake of brevity. It should be understood that the thickness, length, width and other dimensions of the various components in the embodiments of the present application and the overall thickness, length, width and other dimensions of the integrated device shown in the drawings are only exemplary and should not constitute any limitation to the present application.

The appearances of "a plurality" in this application are intended to mean more than two (including two).

In the present application, the battery cell may include a lithium ion secondary battery, a lithium ion primary battery, a lithium sulfur battery, a sodium lithium ion battery, a sodium ion battery, a magnesium ion battery, or the like, which is not limited in the embodiments of the present application. The battery cell may be a cylinder, a flat body, a rectangular parallelepiped, or other shapes, which is not limited in the embodiments of the present application. The battery cells are generally divided into three types in an encapsulation manner: the cylindrical battery monomer, the square battery monomer and the soft package battery monomer are also not limited in the embodiment of the application.

Reference to a battery in embodiments of the present application refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. A battery generally includes a case for housing one or more battery cells or a plurality of battery modules. The box can avoid fluid or other foreign matters to influence the charging or discharging of battery monomer.

The battery cell includes a case for accommodating the electrode assembly and the electrolyte, an electrode assembly, and an electrolyte. The electrode assembly consists of a positive pole piece, a negative pole piece and an isolating membrane. The battery cell mainly depends on metal ions to move between the positive pole piece and the negative pole piece to work. The positive pole piece includes anodal mass flow body and anodal active substance layer, and anodal active substance layer coats in anodal mass flow body's surface, and the anodal mass flow body protrusion in the anodal mass flow body that has coated anodal active substance layer of uncoated anodal active substance layer, and the anodal mass flow body that does not coat anodal active substance layer is as anodal utmost point ear. Taking a lithium ion battery as an example, the material of the positive electrode current collector may be aluminum, and the positive electrode active material may be lithium cobaltate, lithium iron phosphate, ternary lithium, lithium manganate, or the like. The negative pole piece includes negative pole mass flow body and negative pole active substance layer, and the negative pole active substance layer coats in the surface of negative pole mass flow body, and the negative pole mass flow body protrusion in the negative pole mass flow body of coating the negative pole active substance layer not coating the negative pole active substance layer, and the negative pole mass flow body of not coating the negative pole active substance layer is as negative pole utmost point ear. The material of the negative electrode collector may be copper, and the negative electrode active material may be carbon, silicon, or the like. In order to ensure that the fuse is not fused when a large current is passed, the number of the positive electrode tabs is multiple and the positive electrode tabs are stacked together, and the number of the negative electrode tabs is multiple and the negative electrode tabs are stacked together.

The material of the isolation film may be PP (polypropylene) or PE (polyethylene). In addition, the electrode assembly may have a winding structure or a lamination structure, and the embodiment of the present application is not limited thereto.

In recent years, new energy automobiles have a leap-type development, and in the field of electric automobiles, a power battery plays an irreplaceable important role as a power source of the electric automobiles. The battery is composed of a box body and a plurality of battery monomers accommodated in the box body. The battery has higher requirements on safety and cycle service life as a core part of the new energy automobile.

The inventor finds that in a general power battery, in order to improve the operational reliability and stability of the battery, a thermal management component is generally arranged to adjust the temperature of a battery cell so that the battery cell can operate at a proper temperature to obtain sufficient power. Wherein, thermal management part is located the bottom plate top of box usually including temperature regulating plate, and usual fixed mode adopts hot melt self tapping screwed connection with the frame of box, the bottom plate of box and temperature regulating plate, and however, such connected mode has the gap, has hidden danger such as intaking, has great risk. Therefore, the inventor thought that the temperature-adjusting plate could be welded to the case by using the integral brazing technique. However, the welding area of the box body and the temperature adjusting plate is insufficient, so that poor contact of a welding interface and welding failure are easily caused; moreover, the box body and the temperature adjusting plate are easy to deform due to high welding temperature, stress exists, the relative position precision of the box body and the temperature adjusting plate is difficult to guarantee, and therefore welding failure is caused, and problems of insufficient welding, welding seams and the like exist.

In view of the above, in order to improve the welding yield of the case 10 and the temperature adjustment plate 30, the inventors conducted extensive research and designed a case assembly 40, with reference to fig. 2 to 5, the case assembly 40 includes the case 10 and the temperature adjustment plate 30, the case 10 includes a case frame 13, the case frame 13 surrounds an accommodation space 14, the accommodation space 14 is used for accommodating the battery cells 20, the temperature adjustment plate 30 includes an end plate portion 31 and a side plate portion 32, the end plate portion 31 is disposed at one axial end of the case frame 13, the end plate portion 31 is communicated with the accommodation space 14 and is used for adjusting the temperature of the battery cells 20 in the accommodation space 14, the side plate portion 32 is connected to an edge of the end plate portion 31, and the side plate portion 32 blocks the inner circumferential wall 131 and/or the outer circumferential wall 132 of the case frame 13.

In the case assembly 40 with such a structure, the side plate portions 32 of the temperature adjustment plates 30 are in stop fit with the peripheral walls (i.e., the inner peripheral wall 131 and/or the outer peripheral wall 132) of the case frame 13, so that the stability of the relative positions of the two (i.e., the temperature adjustment plates 30 and the case 10) can be improved, and the subsequent connection between the two (i.e., the temperature adjustment plates 30 and the case 10) is facilitated. When the temperature adjusting plate 30 and the box body 10 are connected in a welding mode, the risk that relative positions of the temperature adjusting plate 30 and the box body 10 are changed due to high welding temperature can be reduced, the welding yield is improved, and the probability of welding failure is reduced. In addition, when the side plate portion 32 and the case frame 13 are in close stop fit (i.e. no-gap stop fit), the fit interface between the side plate portion and the case frame (i.e. the temperature adjustment plate 30 and the case 10) can be increased, and the welding area is increased, thereby further improving the welding yield.

It should be noted that the temperature adjustment plate 30 of the embodiment of the present application may not be integrated into the box 10 by welding, that is, in other embodiments, the temperature adjustment plate 30 may be connected to the box 10 by other methods (for example, riveting, screwing, etc.) other than welding, at this time, the side plate portion 32 of the temperature adjustment plate 30 is in stop fit with the peripheral wall (i.e., the inner peripheral wall 131 and/or the outer peripheral wall 132) of the box frame 13, so that the stability of the relative positions of the two (i.e., the temperature adjustment plate 30 and the box 10) can be improved, the subsequent connection between the two (i.e., the temperature adjustment plate 30 and the box 10) is facilitated, and the production efficiency and the production yield are improved.

The battery disclosed in the embodiment of the present application can be used in electric devices such as vehicles, ships or aircrafts, but not limited thereto. The power supply system comprising the battery and the like disclosed by the application can be used, so that the application range of the battery is favorably widened.

The embodiment of the application provides an electric device using a 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 automobile, a ship, a spacecraft and the like. The electric toy may include a stationary or mobile electric toy, such as a game machine, an electric car toy, an electric ship toy, an electric airplane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, a spacecraft, etc.

For convenience of description, the following embodiments take an example in which a power consuming apparatus according to an embodiment of the present application is a vehicle 1000.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle 1000 according to some embodiments of the present disclosure. The vehicle 1000 may be a fuel automobile, a gas automobile, or a new energy automobile, and the new energy automobile may be a pure electric automobile, a hybrid electric automobile, or a range-extended automobile, etc. The battery 100 is provided inside the vehicle 1000, and the battery 100 may be provided at the bottom or the head or the tail of the vehicle 1000. The battery 100 may be used for power supply of the vehicle 1000, for example, the battery 100 may serve as an operation power source of the vehicle 1000. The vehicle 1000 may further include a controller 200 and a motor 300, the controller 200 being configured to control the battery 100 to supply power to the motor 300, for example, for starting, navigation, and operational power requirements while the vehicle 1000 is traveling.

In some embodiments of the present application, the battery 100 may be used not only as an operating power source of the vehicle 1000, but also as a driving power source of the vehicle 1000, instead of or in part of fuel or natural gas, to provide driving power for the vehicle 1000.

Referring to fig. 2, fig. 2 is an exploded view of a battery 100 according to some embodiments of the present disclosure. The battery 100 includes a case 10 and a plurality of battery cells 20, and the battery cells 20 are accommodated in the case 10. Wherein the case 10 is used to provide an assembly space for the battery cells 20, and the case 10 may have various structures. In some embodiments, the case 10 may include a first case body 11 and a second case body 12, the first case body 11 and the second case body 12 cover each other, and the first case body 11 and the second case body 12 together define a fitting space for accommodating the battery cells 20. The second box body 12 can be a hollow structure with one open end, the first box body 11 can be a plate-shaped structure, and the first box body 11 covers the open side of the second box body 12, so that the first box body 11 and the second box body 12 jointly define an assembly space; alternatively, the first case body 11 and the second case body 12 may be both hollow structures with one side open, and the open side of the first case body 11 may be covered on the open side of the second case body 12. Of course, the case 10 formed by the first case body 11 and the second case body 12 may be various shapes, for example, a cylindrical body, a rectangular parallelepiped, and the like.

In the battery 100, the plurality of battery cells 20 may be connected in series or in parallel or in series-parallel, where in series-parallel refers to both series connection and parallel connection among the plurality of battery cells 20. The plurality of battery cells 20 can be directly connected in series or in parallel or in series-parallel, and the whole formed by the plurality of battery cells 20 is accommodated in the box body 10; of course, the battery 100 may also be formed by connecting a plurality of battery cells 20 in series, in parallel, or in series-parallel to form a battery module, and then connecting a plurality of battery modules in series, in parallel, or in series-parallel to form a whole, and accommodating the whole in the case 10. The battery 100 may further include other structures, for example, the battery 100 may further include a bus member for achieving electrical connection between the plurality of battery cells 20.

Wherein each battery cell 20 may be a secondary battery or a primary battery; but is not limited to, a lithium sulfur battery, a sodium ion battery, or a magnesium ion battery. The battery cell 20 may be cylindrical, flat, rectangular parallelepiped, or other shape.

Referring to fig. 3 and 4, the present application provides a case assembly 40 for a battery 100, according to some embodiments of the present application, including: box 10 and temperature regulation board 30, combine fig. 2 and fig. 5, box 10 includes box frame 13, box frame 13 is around going out accommodation space 14, accommodation space 14 is used for holding battery cell 20, temperature regulation board 30 includes end plate portion 31 and side plate portion 32, the axial one end of box frame 13 is located to end plate portion 31, and end plate portion 31 and accommodation space 14 intercommunication, in order to be used for adjusting the temperature of the battery cell 20 in the accommodation space 14, the edge at end plate portion 31 is connected to side plate portion 32, and side plate portion 32 backstop box frame 13's internal perisporium 131 and/or periphery wall 132.

In the above description, the case frame 13 is a ring-shaped frame, the extending direction of the central axis of the ring shape is the axial direction of the case frame 13 (for example, the first direction Z shown in fig. 3), the extending direction of the ring line of the ring shape is the circumferential direction of the case frame 13, and with reference to fig. 5, the inner ring of the ring shape corresponds to the inner circumferential wall 131 of the case frame 13, and the outer ring of the ring shape corresponds to the outer circumferential wall 132 of the case frame 13.

In the above description, the side plate portion 32 stopping the inner peripheral wall 131 of the case frame 13 means that the side plate portion 32 stops the case frame 13 from moving in the direction of the inside of the stopped inner peripheral wall 131 as a whole. The side plate portion 32 stopping the outer peripheral wall 132 of the case frame 13 means that the side plate portion 32 stops the entire case frame 13 from moving in the outer direction of the stopped outer peripheral wall 132.

Further, the "side plate portion 32" may be a stopper having a gap or a stopper having no gap (i.e., a tight stopper fitting) for stopping the "stopper" in the inner peripheral wall 131 and/or the outer peripheral wall 132 of the case frame 13. It is worth mentioning that the "stop without clearance" may be: the side plate portion 32 may be in direct contact with the peripheral wall (inner peripheral wall 131 or outer peripheral wall 132) of the box frame 13, or the side plate portion 32 may be in indirect contact with the peripheral wall (inner peripheral wall 131 or outer peripheral wall 132) of the box frame 13, for example, by brazing, so as to realize a stopper without a gap (i.e., a tight stopper fit).

In the case assembly 40 provided by the present application, the side plate portion 32 of the temperature adjustment plate 30 is in stopping fit with the peripheral wall (i.e. the inner peripheral wall 131 and/or the outer peripheral wall 132) of the case frame 13, so that the stability of the relative positions of the two (i.e. the temperature adjustment plate 30 and the case 10) can be improved, and the subsequent connection between the two (i.e. the temperature adjustment plate 30 and the case 10) is facilitated. When the temperature adjusting plate 30 and the box body 10 are connected in a welding mode, the risk that relative positions of the temperature adjusting plate 30 and the box body 10 are changed due to high welding temperature can be reduced, the welding yield is improved, and the probability of welding failure is reduced. In addition, when the side plate 32 and the case frame 13 are tightly stopped and matched, the matching interface between the two (i.e. the temperature adjustment plate 30 and the case 10) can be increased, and the welding area can be increased, thereby further improving the welding yield.

It should be noted that the temperature adjustment plate 30 of the embodiment of the present application may not be integrated with the case 10 by welding, that is, in other embodiments, the temperature adjustment plate 30 may be connected to the case 10 by other methods (for example, riveting, screwing, etc.) besides welding, at this time, the side plate portion 32 of the temperature adjustment plate 30 is in stop fit with the peripheral wall (i.e., the inner peripheral wall 131 and/or the outer peripheral wall 132) of the case frame 13, so that the stability of the relative positions of the two (i.e., the temperature adjustment plate 30 and the case 10) can be improved, the subsequent connection between the two (i.e., the temperature adjustment plate 30 and the case 10) is facilitated, and the production efficiency and the production yield are improved.

According to some embodiments of the present application, referring to fig. 4, the side plate portion 32 is tightly stopped against the inner peripheral wall 131 and/or the outer peripheral wall 132 of the case bezel 13. That is to say, in the present embodiment, the "stopping" of the side plate portion 32 and the inner circumferential wall 131 and/or the outer circumferential wall 132 of the box frame 13 is a tight stopping without a gap, so that the stability of stopping and limiting can be improved, and the subsequent connection between the two (i.e. the temperature adjustment plate 30 and the box 10) can be facilitated. In addition, in the related art, the contact area between the temperature adjusting plate and the box body is small, and when the temperature adjusting plate and the box body are connected in a welding mode, welding failure of the temperature adjusting plate and the box body can be caused due to the fact that the contact area is small. In the above solution of the present application, the temperature adjustment plate 30 is structurally designed to have the side plate portion 32 closely stopping the peripheral wall (i.e. the inner peripheral wall 131 and/or the outer peripheral wall 132) of the box frame 13, so that when the temperature adjustment plate 30 is welded to the box 10, the welding area of the temperature adjustment plate 30 and the box 10 can be increased, and the probability of welding failure of the temperature adjustment plate 30 and the box 10 can be reduced.

According to some embodiments of the present application, referring to fig. 6-8, the box frame 13 is formed by connecting a plurality of frame edges 133 end to end in sequence, each two adjacent frame edges 133 have different extending directions, and the inner side wall and/or the outer side wall of at least two frame edges 133 is stopped by the side plate portion 32. It should be noted that the "inner side wall" of the frame edge 133 refers to: the frame edge constitutes a side wall surface of the inner peripheral wall 131 of the box frame 13, and the "outer side wall" of the frame edge 133 refers to: the frame side constitutes a side wall surface of the outer peripheral wall 132 of the box body side frame 13.

In the above technical solution, since the side walls (i.e. the inner side walls and/or the outer side walls) of the at least two frame edges 133 are stopped by the side plate portions 32, the stopping limitation can be realized from multiple directions, the stability of the stopping limitation is further improved, and the subsequent connection between the two (i.e. the temperature adjusting plate 30 and the case 10) is more facilitated. In addition, when the side plate portion 32 and the corresponding frame edge 133 are tightly stopped and the temperature adjustment plate 30 is welded to the case 10, the fit interface between the two can be further increased, the welding area can be increased, and the welding yield can be improved.

According to some embodiments of the present application, referring to fig. 6-8, each two opposing rims 133 of the plurality of rims 133 form a set of rim sets, and the outer sidewall of each rim 133 of at least one set of rim sets is stopped by the side plate portion 32; and/or, the inner side wall of each frame edge 133 in at least one frame edge group is respectively stopped by the side plate part 32.

For example, as shown in fig. 6, the upper frame edge 133 and the lower frame edge 133 are disposed opposite to each other to form one frame edge group (referred to as a first frame edge group), and the left frame edge 133 and the right frame edge 133 are disposed opposite to each other to form one frame edge group (referred to as a second frame edge group).

Can be as follows: the outer side wall of each frame edge 133 in the first frame edge group is stopped by the side plate portion 32, that is, the upper side of the upper frame edge 133 is stopped by the side plate portion 32, and the lower side of the lower frame edge 133 is stopped by the side plate portion 32. Or may be: the inner side wall of each frame edge 133 in the first frame edge group is stopped by the side plate portion 32, that is, the lower side of the upper frame edge 133 is stopped by the side plate portion 32, and the upper side of the lower frame edge 133 is stopped by the side plate portion 32. Or may be: the outer side wall of each frame edge 133 of the first frame edge set is stopped by the side plate portion 32, while the inner side wall of each frame edge 133 of the first frame edge set is stopped by the side plate portion 32.

Or may be: the outer side wall of each frame edge 133 in the second frame edge group is stopped by the side plate portion 32, that is, the left side of the left frame edge 133 is stopped by the side plate portion 32, and the right side of the right frame edge 133 is stopped by the side plate portion 32. Or may be: the inner side wall of each frame edge 133 in the second frame edge group is stopped by the side plate portion 32, that is, the right side of the left frame edge 133 is stopped by the side plate portion 32, and the left side of the right frame edge 133 is stopped by the side plate portion 32. Or may be: the outer side wall of each frame edge 133 of the second frame edge set is stopped by the side plate portion 32, while the inner side wall of each frame edge 133 of the second frame edge set is stopped by the side plate portion 32.

Or may be: the outer side wall of each rim 133 of the first set of rims is stopped by the side plate portion 32, respectively, while the outer side wall of each rim 133 of the second set of rims is stopped by the side plate portion 32, respectively. Or may be: the inner side wall of each frame edge 133 in the first frame edge group is stopped by the side plate portion 32, and the inner side wall of each frame edge 133 in the second frame edge group is stopped by the side plate portion 32. Or may be: the outer side wall of each frame edge 133 of the first frame edge group is stopped by the side plate portion 32, and the inner side wall of each frame edge 133 of the second frame edge group is stopped by the side plate portion 32. Or may be: the inner side wall of each frame edge 133 of the first frame edge group is stopped by the side plate portion 32, and the outer side wall of each frame edge 133 of the second frame edge group is stopped by the side plate portion 32.

Or may be: the outer side wall and the inner side wall of each frame edge 133 in the first frame edge group are respectively stopped by the side plate portions 32, while the outer side wall (or the inner side wall) of each frame edge 133 in the second frame edge group are respectively stopped by the side plate portions 32. Alternatively, the outer side wall and the inner side wall of each frame edge 133 in the second frame edge group are respectively stopped by the side plate portions 32, while the outer side wall (or the inner side wall) of each frame edge 133 in the first frame edge group is respectively stopped by the side plate portions 32. And so on.

In the above technical solution, because the relative side wall (i.e. inside wall) of every frame 133 in at least a set of frame group, and/or the opposite side wall (i.e. outside wall) backstop has curb plate portion 32 respectively to can realize the backstop spacing from at least one offside, when assembling box 10 and temperature-regulating plate 30, can save at least a set of centre gripping frock, thereby be favorable to improving production efficiency, reduction in production cost. In addition, when the side plate portion 32 and the corresponding frame edge 133 are tightly stopped and the temperature adjustment plate 30 and the case 10 are welded together, the fit interface between the two can be increased, the welding area can be increased, and the welding yield can be improved.

According to some embodiments of the present application, as shown in fig. 6-8, the outer sidewall of each rim 133 is stopped by the side plate portion 32. In the technical scheme, the stop limit can be realized in all directions, and more clamping tools can be omitted when the box body 10 and the temperature adjusting plate 30 are assembled, so that the production efficiency is improved, and the production cost is reduced. In addition, when the side plate portion 32 and the corresponding frame edge 133 are tightly stopped and the temperature adjustment plate 30 and the case 10 are welded together, the fit interface between the two can be increased, the welding area can be increased, and the welding yield can be improved.

According to some embodiments of the present application, as shown in fig. 6-8, the inner side wall of each rim 133 is stopped by the side plate portion 32. In the technical scheme, the stop limit can be realized in all directions, and more clamping tools can be omitted when the box body 10 and the temperature adjusting plate 30 are assembled, so that the production efficiency is improved, and the production cost is reduced. In addition, when the side plate portion 32 and the corresponding frame edge 133 are tightly stopped and the temperature adjustment plate 30 and the case 10 are welded together, the fit interface between the two can be increased, the welding area can be increased, and the welding yield can be improved.

According to some embodiments of the present application, as shown in fig. 6-8, the outer side wall of each rim 133 is stopped by the side plate portion 32; while the inner side wall of each frame edge 133 is stopped by the side plate portion 32. In the technical scheme, the stop limit can be realized in all directions, and more clamping tools can be omitted when the box body 10 and the temperature adjusting plate 30 are assembled, so that the production efficiency is improved, and the production cost is reduced. In addition, when the side plate portion 32 and the corresponding frame edge 133 are tightly stopped and the temperature adjustment plate 30 and the case 10 are welded together, the fit interface between the two can be increased, the welding area can be increased, and the welding yield can be improved.

In the above description, the shape of the rim 133 is not limited, and may be, for example, a straight line, a curved line, or the like. In addition, the connection manner of the two adjacent frame edges 133 is not limited, and for example, the two adjacent frame edges may be connected by splicing, by using an adapter, or integrally formed, and the like, which is not limited herein.

According to some embodiments of the present application, as shown in fig. 3-8, the side plate portion 32 is configured as an annular side plate that surrounds the entire circumference of the edge of the end plate portion 31. In the above technical solution, the annular side plate portion 32 has better structural strength, can play a more effective stop limiting effect, and is more beneficial to the subsequent connection of the temperature adjusting plate 30 and the box body 10.

According to some embodiments of the present application, as shown in fig. 3 to 8, when the side plate portion 32 is configured as an annular side plate that surrounds the entire periphery of the edge of the end plate portion 31, the side plate portion 32 may be disposed around the outer peripheral wall 132 of the case bezel 13. Thereby, the assembly and connection of the case 10 and the temperature-adjusting plate 30 are facilitated. Moreover, when the side plate portion 32 and the outer peripheral wall 132 of the case frame 13 are tightly stopped and the temperature adjustment plate 30 and the case 10 are welded together, the fit interface between the two can be increased, the welding area can be increased, and the welding yield can be improved.

According to some embodiments of the present application, as shown in fig. 3-8, the shape of the side plate portion 32 matches the shape of the peripheral wall 132 of the case frame 13. That is, the shape of the side plate 32 is substantially the same as the outer peripheral wall 132 of the case frame 13. In the above technical scheme, the peripheral wall 132 of the side plate portion 32 and the box frame 13 can realize tight stop or even clearance fit, so that a more effective stop limiting effect can be achieved, and the subsequent connection between the temperature adjusting plate 30 and the box body 10 is more facilitated.

When the shape of the side plate portion 32 matches the shape of the outer peripheral wall 132 of the case frame 13, according to some embodiments of the present application, at least a portion of the side plate portion 32 closely stops with the outer peripheral wall 132 of the case frame 13. In the technical scheme, the stop limiting effect can be more effectively achieved, and the subsequent connection between the temperature adjusting plate 30 and the box body 10 is more facilitated. Moreover, when the temperature adjusting plate 30 is connected with the box body 10 by welding, the matching interface of the temperature adjusting plate and the box body can be increased, the welding area is increased, and the welding yield is improved.

In short, in the above welding scheme, a strategy that the side plate portion 32 of the temperature adjusting plate 30 closely stops and coats the box frame 13 is added before welding, so that good contact between the box 10 and the temperature adjusting plate 30 is ensured, the position is reliable during welding, a clamping tool can be omitted, the area of a matching contact interface between the temperature adjusting plate 30 and the box 10 is increased, the welding area is increased, the bad welding results such as insufficient welding and the like are effectively avoided, and the welding yield is improved.

According to some embodiments of the present application, as shown in fig. 9, a fitting clearance between one end of the side plate portion 32, which is far from the end plate portion 31, and the outer peripheral wall 132 of the case bezel 13 is larger than a fitting clearance between other positions of the side plate portion 32 and the outer peripheral wall 132 of the case bezel 13. It should be noted that the fitting clearance between other positions of the side plate portion 32 and the outer peripheral wall 132 of the box frame 13 may be zero or greater than zero, and the fitting clearance between one end of the side plate portion 32 away from the end plate portion 31 and the outer peripheral wall 132 of the box frame 13 is greater than zero.

In the above technical solution, the end of the side plate portion 32 away from the end plate portion 31 is equivalent to a flaring form, which is beneficial to sleeving the temperature adjusting plate 30 on the box body frame 13, so that the assembly difficulty is reduced, and the production efficiency is improved. In addition, when the fit clearance between the other positions of the side plate portion 32 and the outer peripheral wall 132 of the case frame 13 is zero, which is equivalent to the tight stop of the portion of the side plate portion 32 and the case frame 13, when the temperature adjustment plate 30 and the case 10 are connected by welding, the fit interface between the two can be increased, the welding area is increased, and the welding yield is improved.

According to some embodiments of the present application, as shown in fig. 9, the side plate portion 32 includes a straight line segment 321 and a flared segment 322, the straight line segment 321 closely stops with the outer peripheral wall 132 of the case bezel 13, the straight line segment 321 is connected between the flared segment 322 and the end plate portion 31, and the flared segment 322 gradually extends in a direction away from the end plate portion 31 toward a direction away from the case bezel 13 (i.e., toward the outside). It should be noted that the flared section 322 may extend along a straight line or along a curved line, which is not limited herein.

In the above technical solution, the side plate portion 32 has a simple structure and is easy to process. Moreover, through setting up straightway 321, can play the spacing effect of more effectual backstop, be favorable to the follow-up connection of temperature regulation board 30 and box 10 more. In addition, the flaring section 322 is arranged, so that the temperature adjusting plate 30 is sleeved on the box body frame 13, the assembly difficulty is reduced, and the production efficiency is improved. In addition, when the temperature adjusting plate 30 is welded to the case 10, the straight line segment 321 is provided, so that the fit interface between the temperature adjusting plate and the case can be increased, the welding area can be increased, and the welding yield can be improved.

Note that the temperature adjustment plate 30 is not limited in processing method, and the connection method between the end plate portion 31 and the side plate portion 32 is not limited. Illustratively, the end plate portion 31 and the side plate portion 32 may be an integral piece. In above-mentioned technical scheme, temperature regulation board 30 is convenient for process, and the structural reliability of side plate portion 32 is good, and spacing stability is good, and can improve temperature regulation board 30's leakproofness, improves battery 100's reliability.

According to some embodiments of the present application, the side plate portion 32 is one piece with the end plate portion 31, and the side plate portion 32 is configured as an annular side plate around the entire circumference of the edge of the end plate portion 31. Therefore, the sealing performance can be better ensured, and the problem that water penetrates into the accommodating space 14 from the matching position between the side plate portion 32 and the end plate portion 31 to cause damage to the battery cell 20 can be avoided.

According to some embodiments of the present application, as shown in fig. 6 and 8, in an axial direction of the case frame 13 (e.g., the first direction Z shown in fig. 8), the extension height H of the side plate portion 32 is smaller than the extension height H of the case frame 13. This saves material and avoids unnecessary interference due to the high height of the side plate portion 32.

For example, in the example shown in fig. 2, when the box 10 includes the first box body 11 and the second box body 12, and the first box body 11 and the second box body 12 are mutually covered, the frame of the second box body 12 can be used as the box frame 13 to be matched with the temperature adjusting plate 30, and by setting the extension height of the side plate portion 32 to be smaller than the extension height of the box frame 13, the problem that the first box body 11 and the second box body 12 are mutually covered due to the excessively high extension height of the side plate portion 32 can be avoided, and the normal assembly requirement of the box 10 is met. However, the present application is not limited thereto, and the box 10 may be configured in other combinations, which will not be described herein.

According to some embodiments of the present application, the thickness of the side plate portion 32 is equal to the thickness of the end plate portion 31. In above-mentioned technical scheme, under the certain prerequisite of the thickness of end plate portion 31, set up to equal with the thickness of end plate portion 31 through the thickness with side plate portion 32, can guarantee the structural strength of side plate portion 32 on the one hand betterly to guarantee the spacing reliability of side plate portion 32, on the other hand makes side plate portion 32 and end plate portion 31 can be an organic whole, satisfies the production and processing requirement of an organic whole.

It is to be noted that, when the side plate portion 32 is configured as an annular side plate that surrounds the entire periphery of the edge of the end plate portion 31, the side plate portion 32 may not be provided around the outer peripheral wall 132 of the case frame 13. For example, according to some embodiments of the present application, as shown in fig. 10, when the side plate portion 32 is configured as an annular side plate that surrounds the entire periphery of the edge of the end plate portion 31, the side plate portion 32 may also be provided around the inner circumferential wall 131 of the case frame 13. In the above technical solution, the side plate portion 32 of the temperature adjustment plate 30 may be located inside the case frame 13, which is beneficial to ensuring the sealing performance of the case 10, thereby improving the reliability of the battery 100.

According to some embodiments of the present application, the shape of the side plate portion 32 matches the shape of the inner peripheral wall 131 of the cabinet bezel 13. That is, the shape of the side plate 32 is substantially the same as the shape of the inner peripheral wall 131 of the box frame 13. In the above technical solution, the side plate portion 32 and the inner peripheral wall 131 of the box frame 13 can realize tight stop or even clearance fit, so that a more effective stop limiting effect can be achieved, and the subsequent connection between the temperature adjusting plate 30 and the box 10 is more facilitated.

When the shape of the side panel portion 32 matches the shape of the inner peripheral wall 131 of the case frame 13, according to some embodiments of the present application, at least a portion of the side panel portion 32 closely stops against the inner peripheral wall 131 of the case frame 13. In the above technical scheme, a more effective stop limiting effect can be achieved, and the subsequent connection between the temperature adjusting plate 30 and the box body 10 is more facilitated. Moreover, when the temperature adjusting plate 30 is connected with the box body 10 by welding, the matching interface of the temperature adjusting plate and the box body can be increased, the welding area is increased, and the welding yield is improved.

According to some embodiments of the present application, as shown in fig. 10, when the side plate portion 32 is disposed around the inner circumferential wall 131 of the box frame 13, a fitting clearance between one end of the side plate portion 32 close to the end plate portion 31 and the inner circumferential wall 131 of the box frame 13 is larger than a fitting clearance between other positions of the side plate portion 32 and the inner circumferential wall 131 of the box frame 13. It should be noted that the fit clearance between other positions of the side plate portion 32 and the inner peripheral wall 131 of the box frame 13 may be zero or greater than zero, and the fit clearance between one end of the side plate portion 32 close to the end plate portion 31 and the inner peripheral wall 131 of the box frame 13 is greater than zero.

In the above technical scheme, the end of the side plate part 32 close to the end plate part 31 is equivalent to a necking form, which is beneficial to sleeving the box body frame 13 outside the temperature adjusting plate 30, so that the assembly difficulty is reduced, and the production efficiency is improved. In addition, when the fit clearance between the other positions of the side plate portion 32 and the inner peripheral wall 131 of the box frame 13 is zero, which is equivalent to that the portion of the side plate portion 32 closely stops the box frame 13, when the temperature adjustment plate 30 is welded to the box 10, the fit interface between the two portions can be increased, the welding area is increased, and the welding yield is improved.

According to some embodiments of the present application, as shown in fig. 9 and 10, the case 10 may further include a case bottom plate 15, the case bottom plate 15 may be connected to the above-mentioned axial end of the case frame 13, and the case bottom plate 15 may be located on a side of the end plate portion 31 away from the receiving space 14, so that the temperature adjustment plate 30 may efficiently adjust the temperature of the battery cell 20. Moreover, by arranging the box body bottom plate 15, the temperature adjusting plate 30 can be supported and protected, and the service life of the temperature adjusting plate 30 is prolonged.

According to some embodiments of the present application, as shown in fig. 9 and 10, the end plate portion 31 has a fluid passage therein, and the temperature-regulating plate 30 has a liquid inlet and a liquid outlet communicating with the fluid passage. Therefore, through the arrangement of the liquid inlet and the liquid outlet, the fluid circulation in the fluid channel can be realized, and the temperature adjustment of the temperature adjusting plate 30 on the battery cell 20 can be realized by adjusting the temperature of the fluid circulating in the fluid channel. Of course, the present application is not limited thereto, and for example, in other embodiments, the temperature adjustment may also be realized in a manner of converting electric energy into thermal energy, which is not described herein again.

According to some embodiments of the present application, the case 10 is welded to the temperature-adjusting plate 30. In the above technical scheme, the connection reliability of the box body 10 and the temperature adjusting plate 30 can be improved, the assembling process of the box body 10 and the temperature adjusting plate 30 is omitted, the production efficiency of the box body assembly 40 is improved, the safety problems such as the formation of a connection gap when the box body 10 and the temperature adjusting plate 30 are connected through a connecting piece are avoided, and the reliability of the battery 100 is improved.

Illustratively, the case 10 is integrally brazed with the temperature-adjusting plate 30. Therefore, the connection reliability of the box body 10 and the temperature adjusting plate 30 can be well guaranteed, the welding furnace can be fed in automatically, manual operation is omitted, labor cost is reduced, and batch production is facilitated. In addition, when the side plate 32 and the box frame 13 are closely stopped, that is, the brazing material is arranged between the side plate 32 and the box frame 13 to realize the close stop fit (i.e., the gapless stop fit) of the side plate and the box frame, so that the fit interface of the integrally brazed parts can be increased, and the welding area can be increased.

According to some embodiments of the present application, the present application further provides a battery 100, the battery 100 includes a battery cell 20 and the case assembly 40 for the battery 100 of any of the above aspects, and the battery cell 20 is disposed in the accommodating space 14.

According to some embodiments of the present application, the present application further provides an electric device, which includes the battery 100 of any one of the above aspects, and the battery 100 is used to provide electric energy for the electric device.

The powered device may be any of the aforementioned devices or systems that employ battery 100.

According to some embodiments of the present application, as shown in fig. 3 to 8, by providing the temperature-adjusting plate 30 to include the side plate portion 32, the side plate portion 32 is configured as an annular side plate surrounding the entire periphery of the edge of the end plate portion 31 of the temperature-adjusting plate 30, the side plate portion 32 is shaped to match the shape of the outer peripheral wall 132 of the case frame 13, the side plate portion 32 is provided around the outer peripheral wall 132 of the case frame 13, and at least part of the side plate portion 32 is closely stopped by the outer peripheral wall 132 of the case frame 13, and then the temperature-adjusting plate 30 is integrally brazed with the case 10, it is possible to effectively increase the welding area, secure the welding effect, and improve the problem of poor welding of the temperature-adjusting plate integrally brazed with the case. The problem of temperature regulating plate 30 and box 10 area of contact little, when leading to temperature regulating plate 30 and box 10 integrated development of brazing, the welding inefficacy is solved.

And the design of the side plate part 32 does not influence the design of the fluid channel in the end plate part 31 of the temperature adjusting plate 30, so that the side plate part 32 can play a role in limiting during welding, tool clamping is not needed, the welding area is increased, and meanwhile, the temperature adjusting requirement of the temperature adjusting plate 30 on the battery monomer 20 is ensured.

It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (22)

1. A case assembly for a battery, comprising:

the box body comprises a box body frame, and the box body frame surrounds an accommodating space; and

temperature-adjusting plate, temperature-adjusting plate includes end plate portion and curb plate portion, end plate portion locates the axial one end of box frame, just end plate portion with the accommodation space intercommunication, the curb plate portion is connected the edge of end plate portion, just the curb plate portion backstop the internal perisporium and/or the periphery wall of box frame.

2. The case assembly for a battery according to claim 1, wherein the side plate portion is closely stopped against an inner circumferential wall and/or an outer circumferential wall of the case bezel.

3. The box assembly for the battery according to claim 1, wherein the box frame is formed by connecting a plurality of frame edges end to end in sequence, the extending direction of each two adjacent frame edges is different, and the side plate part is stopped at the inner side wall and/or the outer side wall of at least two frame edges.

4. A case assembly for a battery as defined in claim 3, wherein each of two opposite frame sides of said plurality of frame sides forms a set of frame sides, and the outer side wall of each frame side of at least one set of frame sides is stopped by said side plate portion; and/or the inner side wall of each frame edge in at least one group of frame edge groups is respectively stopped by the side plate part.

5. A case assembly for a battery as defined in claim 3, wherein the side plate portion is stopped at an outer side wall of each of said rims; and/or the inner side wall of each frame edge is respectively stopped by the side plate part.

6. A case assembly for a battery according to claim 1, wherein the side plate portion is configured as an annular side plate that surrounds the entire circumference of the edge of the end plate portion.

7. The case assembly for a battery according to claim 6, wherein the side plate portion is provided around a peripheral wall of the case bezel.

8. A case assembly for a battery as recited in claim 7, wherein the side plate portion has a shape matching a shape of an outer peripheral wall of the case frame.

9. The case assembly for a battery as claimed in claim 8, wherein at least a portion of the side plate portion is closely stopped with a peripheral wall of the case frame.

10. The case assembly for a battery according to claim 7, wherein a fitting clearance between an end of the side plate portion remote from the end plate portion and an outer peripheral wall of the case frame is larger than a fitting clearance between other positions of the side plate portion and the outer peripheral wall of the case frame.

11. The case assembly for a battery as claimed in claim 10, wherein the side plate portion includes a straight line section and a flared section, the straight line section closely stopping with the outer peripheral wall of the case bezel, the straight line section being connected between the flared section and the end plate portion, the flared section gradually extending in a direction away from the end plate portion toward a direction away from the case bezel.

12. The case assembly for a battery as claimed in claim 6, wherein the side plate portion is provided around an inner circumferential wall of the case frame.

13. The case assembly for a battery as claimed in claim 12, wherein a fitting clearance between one end of the side plate portion near the end plate portion and the inner peripheral wall of the case frame is larger than a fitting clearance between other positions of the side plate portion and the inner peripheral wall of the case frame.

14. A case assembly for a battery as recited in claim 1, wherein an extension height H of the side plate portion is smaller than an extension height H of the case frame in an axial direction of the case frame.

15. A case assembly for a battery as recited in claim 1, wherein the side plate portions have a thickness equal to that of the end plate portions.

16. The case assembly for a battery as claimed in claim 1, wherein the side plate portions and the end plate portions are one piece.

17. The case assembly for a battery as set forth in claim 1, wherein said case further comprises a case bottom plate connected to said one axial end of said case frame at a side of said end plate portion away from said accommodating space.

18. The case assembly for a battery of claim 1, wherein the end plate portion has a fluid passage therein, and the temperature-regulating plate has a liquid inlet and a liquid outlet communicating with the fluid passage.

19. A case assembly for a battery as claimed in any one of claims 1 to 18, wherein the case is welded to the temperature adjustment plate.

20. The case assembly for a battery as claimed in claim 19, wherein the case is integrally brazed with the temperature-adjusting plate.

21. A battery comprising a battery cell and the case assembly for a battery according to any one of claims 1 to 20, wherein the battery cell is provided in the accommodation space.

22. An electric device, characterized by comprising a battery according to claim 21.

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