CN113471606A - Battery box body, battery pack and assembly method of battery box body - Google Patents
Battery box body, battery pack and assembly method of battery box body Download PDFInfo
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- CN113471606A CN113471606A CN202110747890.2A CN202110747890A CN113471606A CN 113471606 A CN113471606 A CN 113471606A CN 202110747890 A CN202110747890 A CN 202110747890A CN 113471606 A CN113471606 A CN 113471606A
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- box body
- module
- liquid cooling
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- liquid
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/258—Modular batteries; Casings provided with means for assembling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The application relates to a battery box body, a battery pack and an assembling method of the battery box body. The battery box body comprises a lower box body and an upper box body connected with the lower box body; the lower box body is composed of at least two box body modules which are spliced into a whole, the box body modules comprise at least one liquid cooling partition, the liquid cooling partition comprises a flow channel structure formed on the bottom wall of the box body modules, and the flow channel structure and a liquid cooling upper plate attached to the bottom wall jointly define a liquid cooling flow channel for circulating cooling liquid; wherein, the box module is an integrated structure. The scheme provided by the application simplifies the manufacturing process steps of the battery box body, enhances the structural strength of the box body, and promotes the protection grade of the battery pack.
Description
Technical Field
The application relates to the technical field of batteries, in particular to a battery box body and a battery pack.
Background
The battery pack is a core part of the electric automobile, the safety protection level of the battery pack directly influences the service life and the working stability of the battery pack, the requirement of light weight is also considered under the condition that the protection level of the battery pack is guaranteed to reach the standard, and the manufacturing process of the battery box body directly influences the protection level and the weight of the battery box body.
In the related art, the battery case is mainly assembled by welding and adhering a plurality of parts. The battery box body has a large number of parts, so that the manufacturing process of the battery box body is long in route, complex in steps, low in production efficiency and large in weight; in addition, the battery case is poor in strength and easily deformed, thereby reducing the protection grade of the battery pack. In addition, because the strength of the liquid cooling plate arranged on the battery box body in the related technology is poor, the liquid cooling plate is easy to deform, and then the problems of uneven flow field and poor heat conduction of the liquid cooling plate after deformation are caused.
Disclosure of Invention
In order to solve or partially solve the problems in the related art, the application provides the battery box body, the battery pack and the assembling method of the battery box body, which can simplify the manufacturing process steps of the box body and improve the protection grade of the battery pack.
A first aspect of the present application provides a battery box, including a lower box and an upper box connected to the lower box;
the lower box body is composed of at least two box body modules which are spliced into a whole, the box body modules comprise at least one liquid cooling partition, the liquid cooling partition comprises a flow channel structure formed on the bottom wall of the box body modules, and the flow channel structure and a liquid cooling upper plate attached to the bottom wall jointly define a liquid cooling flow channel for circulating cooling liquid;
wherein, the box module is an integrated structure.
In one embodiment, the liquid cooling channels of the plurality of tank modules are independently arranged and connected in series or in parallel through liquid cooling pipelines;
the liquid cooling upper plate is provided with a liquid inlet and a liquid outlet which are connected with the runner structure, the liquid inlet and the liquid outlet of the box module are arranged at intervals and are arranged along a virtual straight line respectively, and the virtual straight line is used for arranging the liquid cooling pipeline.
In one embodiment, the case module includes a bottom wall and at least one side wall extending from a face of the bottom wall; the bottom wall and the side wall of at least two box body modules are spliced to form a bottom structure of the lower box body and a side structure surrounding the bottom structure;
the upper surface of the bottom wall is integrally formed with a groove or a protrusion in a preset shape, and the groove or the protrusion in the preset shape defines the flow channel structure.
In one embodiment, the box module further comprises a reinforcing structure formed on the box module, wherein the reinforcing structure comprises reinforcing beams vertically protruding from the bottom wall and extending in different horizontal directions.
In one embodiment, the reinforcing structure includes a plurality of first reinforcing beams and second reinforcing beams formed at the tank module, the first reinforcing beams extending in a first horizontal direction and connected between two opposite sides of the lower tank, the second reinforcing beams extending in a second horizontal direction and connected between the other two opposite sides of the lower tank;
and after the first reinforcing beam and the second reinforcing beam are intersected, a grid-shaped structure is formed in the lower box body, and the grid-shaped structure defines a plurality of liquid cooling subareas.
In one embodiment, a part or the whole of an upper side of the reinforcing beam is configured as a support portion for supporting the upper case.
In one embodiment, a flange extending outward of the box body module is formed on the upper portion of the side wall of the box body module, and the flanges of at least two box body modules are spliced to form a mounting structure of the lower box body;
at least two box modules are spliced and then combined out of the box opening of the lower box body, and the mounting structure is arranged on the edge of the box opening.
In one embodiment, the mounting structure includes a plurality of first connection points and second connection points arranged at intervals on the flange along the edge of the box opening, the first connection points are arranged on one side of the flange close to the box module, the second connection points are arranged on one side of the flange far away from the box module, the first connection points are used for being connected with an upper box of the battery pack, and the second connection points are used for being connected with a mounting portion of the vehicle body.
In one embodiment, the reinforcing structure further comprises a plurality of reinforcing ribs which are vertically arranged and spaced from each other and are formed on the outer side wall of the box body module, and the reinforcing ribs extend to the flanges from the outer side wall of the box body module and support the flanges around the lower box body.
In one embodiment, the bottom of the lower box body is provided with a bottom guard plate, and the bottom guard plate is fixedly connected with the bottom walls of at least two box body modules which are connected into a whole.
In one embodiment, the lower box body consists of a first box body module and a second box body module which are connected into a whole;
the first box body module and the second box body module are respectively arranged on two sides of the lower box body in the length direction or the width direction.
A second aspect of the present application provides a battery pack including the battery case as described above.
A third aspect of the present application provides a method of assembling a battery case, including:
splicing at least two box body modules into a whole to form a lower box body of the battery pack, wherein the at least two box body modules are respectively integrally formed, and a flow channel structure is formed on the bottom wall of each box body module;
assembling the liquid cooling upper plate to the lower box body, wherein the assembling comprises attaching the liquid cooling upper plate to the bottom wall so as to form a liquid cooling flow channel for circulating cooling liquid together with the flow channel structure;
and assembling the bottom guard plate in the lower box body, wherein the bottom guard plate is fixedly connected with the bottom walls of at least two box body modules which are connected into a whole.
The technical scheme provided by the application can comprise the following beneficial effects:
the battery box body comprises a lower box body and an upper box body connected with the lower box body; the lower box body is composed of at least two box body modules which are spliced into a whole, the box body modules comprise at least one liquid cooling partition, the liquid cooling partition comprises a flow channel structure formed on the bottom wall of the box body modules, and the flow channel structure and a liquid cooling upper plate attached to the bottom wall jointly define a liquid cooling flow channel for circulating cooling liquid; wherein, the box module is an integrated structure. Like this, through with lower box segmentation shaping formation generation two at least box modules, form box under with each box module combination again, reduced the spare part of battery box, alleviateed the weight of battery box, simplified the manufacturing process step of battery box, strengthened the structural strength of box, promote the protection level of battery package.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The foregoing and other objects, features and advantages of the application will be apparent from the following more particular descriptions of exemplary embodiments of the application, as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the application.
Fig. 1 is a schematic overall structure diagram of a battery case shown in an embodiment of the present application;
fig. 2 is an exploded view of a battery case according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a case module of a battery case according to an embodiment of the present disclosure;
fig. 4 is an overall structural diagram of another view angle of the battery box body shown in the embodiment of the application;
fig. 5 is a flowchart illustrating an assembly method of a battery case according to an embodiment of the present application.
Reference numerals:
a lower case 100; a liquid-cooled upper plate 200; a reinforcing structure 300; a reinforcing rib 400; a bottom guard plate 500; a case module 110; a flow channel structure 111; a bottom wall 112; a side wall 113; a flange 114; a first connection point 1141; second connection point 1142; a mounting area 101; liquid-cooled partition 1101; a liquid inlet 201; a liquid outlet 202; a first reinforcement beam 310; a second reinforcement beam 320; a shielding plate 500; the scratch prevention layer 510.
Detailed Description
Embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While embodiments of the present application are illustrated in the accompanying drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the related art, the battery case is mainly assembled by welding and adhering a plurality of parts. The battery box body has more parts, long manufacturing process route, complex steps and low production efficiency, and simultaneously the weight of the battery box body is increased; in addition, the battery box body has poor strength and is easy to deform, and the protection grade of the battery pack is reduced.
In view of the above problems, embodiments of the present application provide a battery box and a battery pack, which can simplify the manufacturing process steps of the box and improve the protection level of the battery pack.
The technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Referring to fig. 1 and 2 together, an embodiment of the present application provides a battery box, including a lower box 100 and an upper box (not shown) connected to the lower box; the lower box body 100 is composed of at least two box body modules 110 which are spliced into a whole, the box body modules comprise at least one liquid cooling partition 1101, the liquid cooling partition 1101 comprises a flow channel structure formed on the bottom wall of the box body modules, and the flow channel structure and a liquid cooling upper plate attached to the bottom wall jointly define a liquid cooling flow channel for circulating cooling liquid; the case module 110 is an integrally formed structure. In this embodiment, the lower case 100 is formed by splicing at least two case modules 110, and each case module 110 is integrally formed, so that the parts of the battery case can be reduced, the weight of the battery case is reduced, the manufacturing process steps of the battery case are simplified, the structural strength of the case is enhanced, and the protection grade of the battery pack is improved.
In this embodiment, the integrated molding manner of the case module 110 includes, but is not limited to, die casting, and in other embodiments, the integrated molding manner may also be realized by using a profile with a specific structure or by using a stamping and welding method. The embodiment prefers the die-casting molding, and the die-casting molding can more effectively realize the effects of reducing the weight, the complexity of the system and the production time compared with other molding modes.
In some embodiments, at least one liquid-cooled partition 1101 is formed on each tank module 110, after the tank modules 110 are combined into the lower tank 100, at least one liquid-cooled partition 1101 on each tank module 110 is combined to form a mounting area 101 in the lower tank 100, and the mounting area 101 is used for mounting a battery module. In some embodiments, a limiting structure for limiting the battery module may be formed on the mounting region 101.
In the related art, the lower case 100 cannot be integrally formed due to the tonnage of the high-pressure die casting equipment in the related art. According to the invention, the lower box body 100 is divided into at least two sections for die-casting forming, so that the high strength and the light weight of each box body module 110 are both considered; meanwhile, the use of parts is reduced, so that the production cost is saved, the manufacturing process steps of the lower box body 100 are simplified, the production time is reduced, and the production efficiency is improved.
In some embodiments, each tank module 110 may be combined to form the lower tank 100 by a variety of connection means, including but not limited to welding, gluing, screwing, and the like.
Fig. 3 is a schematic structural diagram of a case module of a battery case according to an embodiment of the present application.
Referring to fig. 3, in some embodiments, a flow passage structure 111 is formed on an upper surface of a bottom wall 112 of the tank module 110, and the flow passage structure 111 and the liquid-cooled upper plate 200 attached to the upper surface of the bottom wall 112 together define a liquid-cooled flow passage for circulating a cooling liquid; the flow path structure 111 has a liquid inlet portion and a liquid outlet portion, and the liquid-cooled upper plate 200 has a liquid inlet 201 connected to the liquid inlet portion and a liquid outlet 202 connected to the liquid outlet portion. The flow channel structure 111 may be a groove or a protrusion formed on the upper surface of the bottom wall 112 of the box module 110, and the liquid cooling upper plate 200 is attached to the bottom wall 112, the groove or the protrusion and the liquid cooling upper plate 200 jointly define a liquid cooling flow channel, and the cooling liquid can flow into or flow out of the liquid cooling flow channel from the liquid inlet 201 and the liquid outlet 202 of the liquid cooling upper plate 200. The liquid-cooled upper plate 200 and the tank module 110 may be connected by various methods, including but not limited to welding, FDS (flow drilling screws), SPR (self-piercing rivets), gluing, and the like.
Further, the liquid cooling channels of the plurality of tank modules 110 are independently arranged and connected in series or in parallel through liquid cooling pipelines; the liquid cooling upper plate is provided with a liquid inlet 201 and a liquid outlet 202 which are connected with the runner structure, and the liquid inlet 201 and the liquid outlet 202 are far away from the liquid cooling partition 1101, for example, the liquid cooling upper plate can be arranged along the diagonal of the liquid cooling upper plate 200, or the liquid inlet 201 and the liquid outlet 202 are arranged along the length or the width direction of the liquid cooling upper plate 200.
In some embodiments, the liquid inlets 201 and the liquid outlets 202 of at least two tank modules 110 are spaced apart and are respectively disposed along a virtual straight line, and the virtual straight line is used for disposing the liquid cooling pipelines. The liquid cooling runners of the plurality of box modules 110 are connected in series or in parallel through the liquid cooling pipelines, so that the plurality of liquid cooling runners of the box modules 110 which are independent of each other are communicated with each other, and the cooling effect of the liquid cooling runners is improved. The liquid cooling pipeline is arranged along the virtual straight line, so that the occupied space of the liquid cooling pipeline can be effectively reduced, the flow path of cooling liquid in the liquid cooling pipeline is shortened, and the circulation efficiency of the cooling liquid is improved.
In some embodiments, the liquid outlets 202 and liquid inlets 201 of adjacent liquid-cooled partitions 1101 may be connected by liquid-cooling lines, wherein the cooling liquid of one liquid-cooled partition 1101 is capable of flowing into another liquid-cooled partition 1101, such that the serial connection of the liquid-cooled flow paths of a plurality of liquid-cooled partitions 1101 is achieved; in some embodiments, the inlets of at least two liquid-cooling zones 1101 may be connected to the same liquid-cooling line, so that parallel connection of liquid-cooling flow paths of multiple liquid-cooling zones 1101 is achieved.
In one particular embodiment, the case module 110 includes a bottom wall 112 and at least one side wall 113 extending from a face of the bottom wall 112; the bottom wall 112 and the side wall 113 of at least two box body modules 110 are spliced to form a bottom structure of the lower box body 100 and a side structure enclosing the bottom structure; in one implementation, the predetermined shape may be an S shape, but is not limited to an S shape.
In this embodiment, the bottom wall 112 of each box module 110 is integrally formed with a flow channel structure 111, and the flow channel structure 111 has high strength and good sealing performance by the integral forming method.
In some embodiments, the battery case further includes a reinforcing structure 300 formed at the case module 110, the reinforcing structure 300 including reinforcing beams vertically protruding from the bottom wall 112 and extending in different horizontal directions; the reinforcing structure 300 includes a plurality of first reinforcing beams 310 and second reinforcing beams 320 formed on the tank module 110, wherein the first reinforcing beams 310 extend along a first horizontal direction and are connected between two opposite side structures of the lower tank 100, and the second reinforcing beams 320 extend along a second horizontal direction and are connected between the other two opposite side structures of the lower tank 100; after the first reinforcing beam 310 and the second reinforcing beam 320 are intersected, a grid-shaped structure is formed in the lower box body, and the grid-shaped structure defines a plurality of liquid cooling zones 11011101.
It can be seen from this embodiment that the reinforcing structure 300 and the case module 110 are an integrally formed structure, the reinforcing structure 300 is connected to the bottom and the opposite side portions 113 of the lower case 100, the reinforcing structure 300 effectively enhances the connection strength between the side walls 113 and the bottom wall 112 of the lower case 100, further effectively enhances the structural strength of the lower case 100, and can prevent the battery case from deforming due to external force; the load borne by the lower box 100 can be transmitted and decomposed through the first reinforcing beam 310 and the second reinforcing beam 320, and the deformation of the flow channel structure 111 can be effectively prevented.
In some embodiments, a part or all of the upper side of the reinforcing structure 300 is configured as a supporting portion for supporting the upper case, and after the upper case is assembled to the lower case 100, the upper case has better structural strength after being supported by the reinforcing structure, so that damage to the conductive components in the case due to manual stepping on the battery case can be effectively avoided.
Fig. 4 is a schematic structural diagram of another perspective of the battery case according to the embodiment of the present application.
Referring to fig. 4, in some embodiments, a flange 114 extending outward from the box module 110 is formed on the upper portion of the sidewall 113 of the box module 110, and the flanges 114 of at least two box modules 110 are joined together to form a mounting structure of the lower box 100; at least two box body modules 110 are spliced and combined to form a box opening of the lower box body 100, and the mounting structure is arranged on the edge of the box opening; the mounting structure comprises a plurality of first connection points 1141 and second connection points 1142 which are arranged on the turned-over edge 114 at intervals along the edge of the box opening, the first connection points 1141 are arranged on one side, close to the box body module 110, of the turned-over edge 114, the second connection points 1142 are arranged on one side, far away from the box body module 110, of the turned-over edge 114, the first connection points 1141 are used for being connected with an upper box body of a battery pack, and the second connection points 1142 are used for being connected with a hanging part of a vehicle body.
By arranging the first connection point 1141 and the second connection point 1142 on the flange 114 integrally formed with the box module 110, the structural strength of the mounting point and the mounting point is effectively enhanced, and the connection strength between the upper box and the lower box 100 and between the lower box 100 and the mounting part of the vehicle body is improved. Wherein, the flange 114 can be formed on the side wall 113 of the case body module 110 by integral die-casting. The connecting point and the hanging point can be arranged in a through hole on the flange, but are not limited to the through hole, and can also be other connecting structures formed on the flange. In some embodiments, the reinforcing structure 300, the mounting points and the box body module are integrally formed, so that the installation of parts is further reduced, the assembly efficiency of the battery pack is improved, and the structural strength of the battery box body is effectively enhanced.
In some embodiments, the reinforcing structure 300 further includes a plurality of vertically disposed and spaced ribs 400 formed on the outer sidewall 113 of the tank module 110, wherein the ribs 400 extend from the outer sidewall 113 of the tank module 110 to the flange 114 and support the flange 114 around the lower tank 100. Thus, the reinforcing ribs 400 effectively support the turned-over edges 114, the structural strength of the mounting points and the mounting points is further enhanced, meanwhile, the reinforcing ribs 400 also enhance the rigidity of the battery box body, and the collision performance of the battery pack is improved. Preferably, the reinforcing rib 400 is connected with the flange to form a supporting structure similar to a triangle, so that the support is more stable.
It can be understood that the orientation and arrangement of the reinforcing ribs can be comprehensively considered according to the structural simulation and forming mode of the battery box body, and the orientation and arrangement of the reinforcing ribs are not limited in the embodiment.
In some embodiments, the bottom of the lower box 100 is provided with a bottom guard plate 500, and the bottom guard plate 500 is fixedly connected to the bottom walls 112 of at least two box modules 110 connected together. The bottom guard plate 500 enhances the bottom protection of the lower case 100. In addition, the fixing function of the bottom guard plate 500 effectively enhances the connection strength between at least two tank modules 110 connected together, thereby enhancing the structural strength of the lower tank 100. In some embodiments, the bottom cover 500 has a plurality of connection holes for connecting with the box module 110, and the bottom cover 500 and the box module 110 have a plurality of connection methods, for example: welding, FDS (flow drilling screws), SPR (self punch riveting), gluing, etc., which are not described in detail herein. The reinforcing plates are arranged at the bottoms of the first box body and the second box body, so that the bottom protection performance of the first box body and the second box body is enhanced.
In some embodiments, the backplate may comprise a metal plate, such as a steel plate, and in order to enhance the protective performance of the backplate 500, the backplate 500 further comprises a scratch-resistant layer 510 disposed at the bottom of the metal plate, and the scratch-resistant layer 510 is made of a friction-resistant and scratch-resistant material, such as PVC, rubber material, and the like.
In some embodiments, the structures and shapes of at least two case modules 110 constituting the lower case 100 may be arranged to be the same or different. In one implementation, the lower case 100 may be composed of a first case module 110 and a second case module 110 that are connected into a whole and have the same structure and shape; first box module 110 and second box module 110 are located box 100 length direction or width direction's both sides down respectively, that is to say, first box module 110 and second box module 110 are the mirror image setting, do benefit to like this and have promoted the production efficiency of box 100 down. It is understood that the lower box 100 may be formed by splicing more than two box modules 110.
In some embodiments, in order to satisfy the diversity of the shape and structure of the lower case 100, the structure and shape of at least two case modules 110 constituting the lower case 100 may also be configured differently. In one embodiment, the lower case 100 may be composed of a first case module 110 and a second case module 110 which are connected as a single body and have different structures and shapes; the first case module 110 and the second case module 110 are connected by a connecting portion, wherein the connecting portion of the first case module 110 and the second case module 110 is aligned, for example, the connecting portion of the first case module 110 is convex, the connecting portion of the second case module 110 is concave, and so on.
The battery box body of the embodiment of the application is introduced above, and correspondingly, the application also provides a battery pack which comprises the battery box body of the embodiment.
The battery case includes a lower case 100 and an upper case (not shown) connected to the lower case 100; lower box 100 comprises at least two concatenation box modules 110 as an organic whole, the box module includes at least one liquid cooling subregion 1101, liquid cooling subregion 1101 includes the runner structure of shaping on the diapire of box module, the runner structure with laminate in the liquid cooling runner that is used for circulating the coolant liquid is injectd jointly to the liquid cooling upper plate of diapire, wherein, box module 110 is the integrated into one piece structure. In this embodiment, the lower case 100 is formed by splicing at least two case modules 110, and each case module 110 is integrally formed, so that the parts of the battery case can be reduced, the weight of the battery case is reduced, the manufacturing process steps of the battery case are simplified, the structural strength of the case is enhanced, and the protection grade of the battery pack is improved.
The battery pack according to the embodiment of the present application is introduced above, and accordingly, the present application further provides an assembling method of a battery box body.
Fig. 5 is a flowchart illustrating an assembly method of a battery case according to an embodiment of the present application.
Referring to fig. 5, an embodiment of the present application provides an assembling method of a battery case, including:
In the step, the lower box body is divided into at least two sections which are respectively integrally formed, so that the high strength and the light weight of each box body module are considered; meanwhile, the runner structure is formed on the bottom wall of the box body module, so that the use of connecting pieces is reduced, the production cost is saved, the production steps of the lower box body and the runner structure are simplified, and the production efficiency is improved.
In this step, the liquid cooling board is laminated behind the diapire, has integrateed the liquid cooling structure on the box under in other words, avoids appearing the liquid cooling board that sets up alone among the correlation technique and produces the problem of deformation easily behind assembly and the lower box.
In the step, the bottom guard plate can be connected to the lower box body in a welding mode, an FDS (flow drilling screw), an SPR (self-piercing riveting), an adhesive mode and the like, so that on one hand, the connection strength between at least two box body modules which are connected into a whole is enhanced, and further, the structural strength of the lower box body is enhanced; on the other hand, the lower box body can form a protection function.
According to the scheme provided by the embodiment of the application, in the embodiment, the lower box body is formed by splicing at least two box body modules, and each box body module is integrally formed, so that parts of the battery box body can be reduced in the assembling process, the weight of the battery box body is lightened, the manufacturing process steps of the battery box body are simplified, the structural strength of the box body is enhanced, and the protection level of the battery pack is improved.
Having described embodiments of the present application, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (13)
1. A battery case, comprising:
the device comprises a lower box body and an upper box body connected with the lower box body;
the lower box body is composed of at least two box body modules which are spliced into a whole, the box body modules comprise at least one liquid cooling partition, the liquid cooling partition comprises a flow channel structure formed on the bottom wall of the box body modules, and the flow channel structure and a liquid cooling upper plate attached to the bottom wall jointly define a liquid cooling flow channel for circulating cooling liquid;
wherein, the box module is an integrated structure.
2. The battery case according to claim 1, characterized in that:
the liquid cooling runners of the box body modules are independently arranged and are connected in series or in parallel through liquid cooling pipelines;
the liquid cooling upper plate is provided with a liquid inlet and a liquid outlet which are connected with the runner structure, at least two box modules are arranged at intervals of the liquid inlet and the liquid outlet along a virtual straight line respectively, and the virtual straight line is used for arranging the liquid cooling pipeline.
3. The battery case according to claim 2, characterized in that:
the box body module comprises a bottom wall and at least one side wall extending out from the surface of the bottom wall; the bottom wall and the side wall of at least two box body modules are spliced to form a bottom structure of the lower box body and a side structure surrounding the bottom structure;
the upper surface of the bottom wall is integrally formed with a groove or a protrusion in a preset shape, and the groove or the protrusion in the preset shape defines the flow channel structure.
4. The battery case of claim 3, wherein:
the box body module is characterized by further comprising a reinforcing structure formed on the box body module, wherein the reinforcing structure comprises reinforcing beams which vertically protrude from the bottom wall and extend along different horizontal directions.
5. The battery case according to claim 4, characterized in that:
the reinforcing structure comprises a plurality of first reinforcing beams and second reinforcing beams which are formed on the box body module;
the first reinforcing beam extends along a first horizontal direction and is connected between two opposite side parts of the lower box body, and the second reinforcing beam extends along a second horizontal direction and is connected between the other two opposite side parts of the lower box body;
and a grid structure is formed in the lower box body after the first reinforcing beam and the second reinforcing beam are intersected, and the grid structure defines a plurality of liquid cooling subareas.
6. The battery case according to claim 5, characterized in that:
a part or the whole area of the upper side of the reinforcing beam is configured as a support part for supporting the upper box body.
7. The battery case according to claim 4, characterized in that:
a flange extending outwards from the box body module is formed at the upper part of the side wall of the box body module, and the flanges of at least two box body modules are spliced to form a mounting structure of the lower box body;
at least two box modules are spliced and then combined out of the box opening of the lower box body, and the mounting structure is arranged on the edge of the box opening.
8. The battery case according to claim 7, characterized in that:
the mounting structure comprises a plurality of first connecting points and second connecting points which are arranged on the turned edge along the edge of the box opening at intervals, the first connecting points are arranged on one side, close to the box body module, of the turned edge, the second connecting points are arranged on one side, far away from the box body module, of the turned edge, the first connecting points are used for being connected with an upper box body of a battery pack, and the second connecting points are used for being connected with a hanging part of a vehicle body.
9. The battery case according to claim 7, characterized in that:
the reinforced structure further comprises a plurality of reinforcing ribs which are vertically arranged and spaced at the outer side wall of the box body module, the reinforcing ribs extend to the flanging from the outer side wall of the box body module, and the periphery of the lower box body is supported on the flanging.
10. The battery case according to claim 1, characterized in that:
the bottom of lower box is equipped with end backplate, end backplate and at least two that link to each other as an organic whole the diapire of box module is fixed continuous.
11. The battery case according to any one of claims 1 to 10, wherein:
the lower box body consists of a first box body module and a second box body module which are connected into a whole;
the first box body module and the second box body module are respectively arranged on two sides of the lower box body in the length direction or the width direction.
12. A battery pack, comprising: comprising a battery can according to any of claims 1-11.
13. A method of assembling a battery case, comprising:
splicing at least two box body modules into a whole to form a lower box body of the battery pack, wherein the at least two box body modules are respectively integrally formed, and a flow channel structure is formed on the bottom wall of each box body module;
assembling the liquid cooling upper plate to the lower box body, wherein the assembling comprises attaching the liquid cooling upper plate to the bottom wall so as to form a liquid cooling flow channel for circulating cooling liquid together with the flow channel structure;
and assembling the bottom guard plate in the lower box body, wherein the bottom guard plate is fixedly connected with the bottom walls of at least two box body modules which are connected into a whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110747890.2A CN113471606A (en) | 2021-07-01 | 2021-07-01 | Battery box body, battery pack and assembly method of battery box body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110747890.2A CN113471606A (en) | 2021-07-01 | 2021-07-01 | Battery box body, battery pack and assembly method of battery box body |
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| Publication Number | Publication Date |
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| CN113471606A true CN113471606A (en) | 2021-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110747890.2A Pending CN113471606A (en) | 2021-07-01 | 2021-07-01 | Battery box body, battery pack and assembly method of battery box body |
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| CN (1) | CN113471606A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106856231A (en) * | 2015-12-09 | 2017-06-16 | 宁德时代新能源科技股份有限公司 | Battery pack |
| CN206806392U (en) * | 2017-05-02 | 2017-12-26 | 中航锂电（洛阳）有限公司 | A kind of battery box body and battery case |
| CN207664095U (en) * | 2017-11-29 | 2018-07-27 | 智车优行科技（上海）有限公司 | Battery case and automobile with the Battery case |
| CN209150192U (en) * | 2018-12-13 | 2019-07-23 | 惠州亿纬锂能股份有限公司 | A kind of liquid cooling battery pack |
| CN210624977U (en) * | 2019-06-24 | 2020-05-26 | 青岛经济技术开发区海尔热水器有限公司 | Solar water heater |
| CN111211262A (en) * | 2018-11-21 | 2020-05-29 | 郑州深澜动力科技有限公司 | Battery box and box body thereof |
| CN210692627U (en) * | 2019-10-28 | 2020-06-05 | 观致汽车有限公司 | Integrated shell and liquid-cooled battery pack comprising same |
| CN211629192U (en) * | 2020-04-23 | 2020-10-02 | 伟巴斯特车顶供暖系统（上海）有限公司 | Battery box body for battery pack and battery pack |
| CN212461817U (en) * | 2020-06-22 | 2021-02-02 | 湖北亿纬动力有限公司 | Liquid cooling board and battery module |
-
2021
- 2021-07-01 CN CN202110747890.2A patent/CN113471606A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106856231A (en) * | 2015-12-09 | 2017-06-16 | 宁德时代新能源科技股份有限公司 | Battery pack |
| CN206806392U (en) * | 2017-05-02 | 2017-12-26 | 中航锂电（洛阳）有限公司 | A kind of battery box body and battery case |
| CN207664095U (en) * | 2017-11-29 | 2018-07-27 | 智车优行科技（上海）有限公司 | Battery case and automobile with the Battery case |
| CN111211262A (en) * | 2018-11-21 | 2020-05-29 | 郑州深澜动力科技有限公司 | Battery box and box body thereof |
| CN209150192U (en) * | 2018-12-13 | 2019-07-23 | 惠州亿纬锂能股份有限公司 | A kind of liquid cooling battery pack |
| CN210624977U (en) * | 2019-06-24 | 2020-05-26 | 青岛经济技术开发区海尔热水器有限公司 | Solar water heater |
| CN210692627U (en) * | 2019-10-28 | 2020-06-05 | 观致汽车有限公司 | Integrated shell and liquid-cooled battery pack comprising same |
| CN211629192U (en) * | 2020-04-23 | 2020-10-02 | 伟巴斯特车顶供暖系统（上海）有限公司 | Battery box body for battery pack and battery pack |
| CN212461817U (en) * | 2020-06-22 | 2021-02-02 | 湖北亿纬动力有限公司 | Liquid cooling board and battery module |
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