CN218602647U - Battery cell module, battery pack and battery pack - Google Patents

Abstract

The application relates to the technical field of energy storage devices, and discloses a battery cell module, a battery pack and a battery pack, wherein the battery cell module comprises a side plate and a plurality of battery cells, and the plurality of battery cells are stacked along a set direction to form a row; the curb plate extends along the direction that piles up of electric core to paste in one side of a row of electric core, each electric core is connected respectively in the curb plate. Therefore, the single-row battery cell forms a small module, so that the battery pack is convenient to assemble and carry, and the assembly efficiency of the battery pack is improved. A plurality of electric core modules are arranged along the direction that perpendicular to electric core piles up the direction, form the group battery that has multiseriate electric core, and each curb plate is located same one side of each row of electric core, consequently adjacent two only have a curb plate between the electric core, realize the sharing of curb plate to, single electric core that is listed as forms modular electric core module, the assembly and the transport of being convenient for effectively reduce the technology degree of difficulty of group battery, thereby help improving the assembly efficiency of group battery. The battery pack having the battery pack described above also has the advantages described above.

Description

Battery cell module, battery pack and battery pack

Technical Field

The application relates to the technical field of energy storage devices, in particular to an electric core module, a battery pack and a battery pack.

Background

At present, the battery package is usually through establishing ties and/parallelly connected ganged with a plurality of electric cores, forms independent battery module through corresponding component is fixed to in assembly and transport, then form the battery package with a plurality of battery module vanning assembly, with the demand that satisfies high voltage, large capacity. However, the battery modules commonly used at present are complex in grouping mode structure, the number of the battery cores and the needed components for fixing the battery cores are multiple, so that more connecting pieces and structural parts are arranged inside the battery pack, the assembly is complex, a large internal space is occupied, and the volume space utilization rate is low.

SUMMERY OF THE UTILITY MODEL

The present application is directed to solving at least one of the problems in the prior art. To this end, the present application proposes a cell module that can be formed as a single module for assembly to form a battery pack or a battery pack, thereby simplifying assembly.

The embodiment of the application also provides a battery pack with the battery cell module.

The embodiment of the application also provides a battery pack with the battery pack.

According to the battery cell module, the battery cell group and the side plate, the battery cell group comprises a plurality of battery cells which are stacked along a set direction to form a column; the side plates extend along the stacking direction of the battery cores and are attached to one side of the battery core group, and the battery cores in the battery core group are connected to the side plates respectively.

The battery cell module of the embodiment of the first aspect of the application has at least the following beneficial effects: each electric core is connected at one side of a list of electric core to the curb plate to form electric core module, from this, a curb plate and single-row electric core form a little module, are convenient for assemble and transport, help improving the assembly efficiency of group battery.

According to some embodiments of the application, the battery cell module further comprises a middle end plate, the middle end plate is arranged in one row at the middle part of the battery cell and separates a plurality of parts, and the middle end plate can support the battery cell on two sides in the stacking direction of the battery cell.

According to some embodiments of the application, the middle end plate and the electric cores positioned on two sides of the middle end plate form an avoiding space therebetween for avoiding a cross beam of the battery box.

According to some embodiments of the application, correspond to on the curb plate the position of middle part end plate is provided with dodges the mouth, dodge the crossbeam that the mouth is used for dodging the battery box.

According to some embodiments of the application, be provided with the through-hole on the middle part end plate, the through-hole is followed the direction of height of electric core link up the middle part end plate, the through-hole is used for dodging the hoist and mount portion of battery box.

The battery pack according to an embodiment of a second aspect of the present application includes a plurality of the cell modules of the first aspect of the present application, the cell modules are arranged in a direction perpendicular to the stacking direction of the cells and attached to each other, and the side plates of the cell modules are located on the same side of the cell group.

The battery pack of the embodiment of the second aspect of the present application has at least the following beneficial effects: a plurality of electric core modules are arranged along the direction that perpendicular to electricity core pile up the direction, form the group battery that has multiseriate electricity core, and each curb plate is located same one side of each row of electricity core, therefore adjacent two only have a curb plate between the electricity core, realize the sharing of curb plate to, single row of electricity core forms modular electric core module, is convenient for assemble and transport, effectively reduces the technology degree of difficulty of group battery, thereby helps improving the assembly efficiency of group battery.

According to the battery pack of the third aspect embodiment of the present application, the battery pack includes the battery box and the battery pack of the second embodiment, the battery box includes a plurality of box walls, the plurality of box walls surround to form a containing cavity, the battery pack is contained in the containing cavity, and the outermost side of the battery pack is connected with the corresponding box wall.

The battery pack of the embodiment of the third aspect of the present application has at least the following beneficial effects: the battery pack accommodated in the accommodating cavity is provided with a plurality of rows of battery cells, so that the requirements of high voltage and large capacity are met; each column of battery cells independently forms a battery cell module, so that the battery cell module is convenient to assemble and carry, and the assembly efficiency of the battery pack is improved. And, only have a curb plate between adjacent two sets of electric core groups, realize the sharing of curb plate, pass through two curb plates fixed battery module that form with present single-row electric core, compare a plurality of battery module holding in the scheme that the battery box assembly formed the battery package, saved the use of a curb plate to reduce and occupy the space that holds the chamber, help improving the volume space utilization of battery package.

According to some embodiments of this application, the battery box still includes the bottom plate, the bottom plate is connected with the bottom of tank wall, just be provided with the crossbeam on the bottom plate, the crossbeam is located hold intracavity and perpendicular to the direction that piles up of electric core, corresponding to the position of crossbeam, each electricity core module still includes the middle part end plate, the middle part end plate is located the middle part of electric core group, the middle part end plate with be located the middle part end plate both sides form between the electric core and dodge the space, the crossbeam is worn to locate in dodging the space.

According to some embodiments of this application, be provided with hoist and mount portion on the crossbeam, hoist and mount portion is provided with the hole for wear to establish hoist and mount piece in order connecting the automobile body, be provided with the through-hole on the middle part end plate, the through-hole is followed the direction of height of electric core link up the middle part end plate, hoist and mount portion wears to locate in the through-hole.

According to some embodiments of the application, the sling is integrally formed with the beam.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The present application is further described with reference to the following figures and examples, in which:

fig. 1 is a schematic structural diagram of a battery cell module according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a cell module according to another embodiment of the present application;

fig. 3 is a schematic view of another angle of the cell module shown in fig. 2;

FIG. 4 is an enlarged view of a portion of the view A in FIG. 3;

fig. 5 is a partial structural view of a battery pack according to an embodiment of the present application;

fig. 6 is an exploded view of a portion of a battery pack according to an embodiment of the present application;

fig. 7 is a schematic structural view of the cross beam in fig. 6.

Reference numerals are as follows:

the battery cell module 100, the battery cell 101, the side plate 102, the second adhesive layer 103, the middle end plate 104, the abutting part 105, the connecting part 106, the avoiding space 107, the through hole 108 and the avoiding port 109;

the device comprises a battery pack 200, a temperature adjusting plate 201, a water inlet 202, a water outlet 203 and a bearing beam 204;

the battery box comprises a battery box 300, box walls 301, a containing cavity 302, a cross beam 303, a lifting part 304, lifting holes 305 and a bottom plate 306.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and are only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it should be understood that the positional descriptions referred to, for example, the directions or positional relationships indicated by upper, lower, front, rear, left, right, etc., are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present application.

In the description of the present application, several means are one or more, and the above, below, within and the like are understood to include the present numbers. If there is a description of first, second, etc. for the purpose of distinguishing technical features, it should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.

In the description of the present application, unless otherwise expressly limited, terms such as set, mounted, connected and the like should be construed broadly, and those skilled in the art can reasonably determine the specific meaning of the terms in the present application by combining the detailed contents of the technical solutions.

In the description of the present application, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

With the development of power battery technology, a high-voltage and large-capacity power battery pack has become a development trend. For satisfying high voltage, the demand of large capacity, battery package inside is equipped with a large amount of electric cores usually, and present battery package is usually through arranging a plurality of electric cores and establish ties and/parallelly connected in groups, forms the battery module through the connecting piece is fixed, then goes into the case assembly and forms the battery package. The common grouping mode of present battery module is fixed through two blocks of curb plates in the both sides of a list electric core, and both ends are fixed through two end plates, form an solitary battery module. This kind of mode of uniting technology is complicated and the component is various, forms the battery package with a plurality of such battery module and battery box assembly, and two curb plates of adjacent battery module form structural redundancy, occupy great battery box inner space, and volume space utilization is lower to battery package internal connection spare and structure are more, thereby the assembly is complicated, has restricted the promotion of assembly efficiency.

The embodiment of the application provides an electric core module, a battery pack and a battery pack, wherein the electric core module can form an independent module, the electric core module forms a modularized structure, the assembly and the carrying are convenient, the battery pack is formed by assembling a plurality of electric core modules, the assembly of the battery pack and the battery pack can be effectively simplified, and the space utilization rate of the battery pack can be improved.

Fig. 1 is a schematic structural diagram of a battery cell module according to an embodiment of the present application, referring to fig. 1, a first aspect of the present application provides a battery cell module 100, including a side plate 102 and a plurality of battery cells 101, a plurality of battery cells 101 are stacked along a set direction to form a column, the side plate 102 extends along the stacking direction of the battery cells 101, and is attached to one side of a column of the battery cells 101, each battery cell 101 is connected to the side plate 102, and thus, a single column of the battery cells 101 form a small module, which is convenient for assembly and transportation, and is helpful for improving the assembly efficiency of a battery pack.

Moreover, the battery cell module 100 can be used to assemble a large module having a plurality of rows of battery cells 101 and put into a battery box to form a battery pack, and in the battery cell module 100 according to the embodiment of the present application, each row of battery cells 101 has only one side plate 102. And constitute battery module with list electricity core 101 in the scheme commonly used after, a plurality of battery modules form the battery package with the battery box assembly, and wherein every battery module all has 2 curb plates 102, can know from this, based on this application embodiment electricity core module 100's group battery and battery package, can effectively reduce the quantity of curb plate 102 to reduce inner structure, improved space utilization. The reduction of structural members also simplifies the structure and assembly process.

In some embodiments, the side plate 102 is provided with a liquid channel (not shown) for introducing a liquid medium at a set temperature to adjust the temperature of the battery cells 101, and the liquid medium flowing through the liquid channel can exchange heat with the battery cells 101 through the side plate 102, so that each battery cell 101 can be cooled or heated by introducing the liquid medium at the set temperature to the liquid channel according to operation needs, so as to keep the battery cells 101 at a proper temperature, thereby maintaining a stable operating state.

In some embodiments, the side plate 102 is made of a material with thermal insulation performance, such as foam, aerogel, etc., to achieve the thermal insulation effect on the battery cell 101, and the side plate 102 may also be made of a conventional plate, and a thermal insulation coating is provided on the plate surface to also achieve the thermal insulation effect. From this, can effectively avoid ambient temperature to influence electricity core 101 to and the temperature influence each other between two adjacent electric cores 101, be of value to the thermal management of group battery.

Fig. 2 is a schematic structural diagram of a battery cell module according to another embodiment of the present disclosure, fig. 3 is a schematic diagram of another angle of the battery cell module shown in fig. 2, and referring to fig. 2 and fig. 3, in some embodiments, the side plate 102 may also be a structural steel beam, and when the battery cell module 100 is installed in a battery box, the side plate 102 may be connected to the battery box, so as to serve as a bearing beam inside the battery box, and can be used to bear a battery pack and other structural members inside the battery pack, thereby improving structural stability of the battery pack. The side plate 102 may be made of a hollow section, has sufficient strength, and is light in weight, which helps to reduce the overall weight of the battery pack.

In the battery cell module 100 of the above embodiment, the connection between each battery cell 101 and the side plate 102 may be fixed by gluing, for example, a first adhesive layer is disposed between a side surface of each battery cell 101 facing the side plate 102 and the side plate 102, and each battery cell 101 is adhered to the side plate 102 through the first adhesive layer, so that the structure is simple and the connection is stable. The first adhesive layer may be adhesive tape attached between the battery cell 101 and the side plate 102, or an adhesive applied to the battery cell 101 or the side plate 102, and the adhesive tape and the adhesive commonly used in power battery systems may be used.

Referring to fig. 3, in some embodiments, a second adhesive layer 103 is disposed on a side of the battery cells 101 facing away from the side plate 102, and each battery cell 101 is connected to the second adhesive layer 103 and can be connected to the side plate 102 of another battery cell module 100 through the second adhesive layer 103, so that when a plurality of battery cell modules 100 are assembled to form a battery pack, the adjacent battery cell modules 100 can be connected through the second adhesive layer 103, which is simple in structure and convenient to connect. The second adhesive layer 103 may be adhesive paper adhered to the battery cell 101, or an adhesive applied to the battery cell 101, and may be adhesive paper and an adhesive commonly used in power battery systems.

In conventional battery package, if the length that needs to set up single-row electricity core 101 in the battery box is longer, then need stack a plurality of battery modules along the direction end to end that electricity core 101 piled up, wherein every battery module needs 2 end plates to support tightly respectively to the both ends of a plurality of electricity cores 101. In the battery box with a large length, in order to ensure the strength, a cross beam (refer to fig. 6) perpendicular to the stacking direction of the battery cells 101 is disposed on the battery box, so that two sets of battery modules need to be disposed on two sides of the cross beam along the length direction of the battery box, when the position of the cross beam deviates from the center of the battery box or the number of the cross beams is multiple, the battery modules with different stacking lengths need to be disposed, and therefore, multiple types of battery modules need to be disposed, thereby increasing the process complexity.

The battery cell module 100 according to the embodiment of the present disclosure can have a longer stacking length without configuring a plurality of battery modules. Referring to fig. 2 and 3, in some embodiments, the cell module 100 further includes a middle end plate 104, where the middle end plate 104 is disposed in the middle of the row of the cells 101, and the middle is any position between two ends of the row of the cells 101, and is not limited to the geometric center thereof. Therefore, the middle end plate 104 separates a row of the battery cells 101 to form a plurality of portions, and the middle end plate 104 can support the battery cells 101 at two sides in the stacking direction of the battery cells 101 to resist the acting force in the stacking direction of the battery cells 101, such as the expansion force of the battery cells 101. Therefore, one battery cell module 100 can be configured with a larger number of battery cells 101, so that the stacking length of the battery cells 101 can be increased, and the use of a plurality of battery modules and various battery modules can be avoided. In addition, in the battery cell module 100 of the embodiment of the application, the two battery cells 101 separated from two sides of the middle end plate 104 share the middle end plate 104, so that the use of the end plate is reduced, and therefore, based on the battery pack and the battery pack of the battery cell module 100, the number of the end plates can be effectively reduced, internal structural components are reduced, and the space utilization rate is improved. The reduction of structural members also simplifies the structure and assembly process to some extent.

Fig. 4 is a schematic enlarged view of a part a in fig. 3, and referring to fig. 2 to 4, in some embodiments, an avoidance space 107 is formed between the middle end plate 104 and the electric core 101 located at both sides of the middle end plate 104, and is used for avoiding a cross beam of the battery box, so as to avoid assembly interference, and correspondingly, an avoidance opening 109 may also be provided on the side plate 102 corresponding to the middle end plate 104, and is used for avoiding the cross beam. From this, electric core 101 can be at the support of middle part end plate 104 and leave the space of battery box crossbeam and continuously pile up to required length, and the kind of reducible battery module simplifies assembly process.

The battery cell 101 has a set height, the middle end plate 104 has two abutting portions 105 and a connecting portion 106 connected between the two abutting portions 105, the two abutting portions 105 are spaced by a set distance and extend along the height direction of the battery cell 101, and the connecting portion 106 is connected between the two abutting portions 105 and is located at the upper portion of the abutting portion 105 along the height direction of the battery cell 101, so that a hollow structure is formed below the connecting portion 106, and an avoiding space 107 can be provided for the cross beam to pass through. Alternatively, the bottom of the middle end plate 104 is higher than the bottom of the battery cell 101 in the height direction of the battery cell 101, so that an avoidance space 107 can be formed between the battery cells 101 on both sides of the middle end plate 104 for a cross beam of the battery box to pass through. In some embodiments, a through hole 108 may be further disposed on the middle end plate 104, the through hole 108 penetrates through the middle end plate 104 in the height direction of the battery cell 101, and the through hole 108 is used for avoiding a hoisting portion of the battery box (see fig. 6).

In some embodiments, the number of the middle end plates 104 of the cell module 100 may be 1, 2 or more, and a plurality of the middle end plates 104 are arranged at intervals, and the specific number may be correspondingly set according to the required stacking length and the number of the internal beams of the battery box. The middle end plate 104 is bonded to the cells 101 on both sides of the middle end plate 104, for example, the bonding may be achieved by adhesive tape or aerogel, thereby ensuring stability between the two separated cells 101.

As can be seen from the above, the battery cell module 100 according to the embodiment of the present application is applicable to assembly to form a battery pack and a battery pack, and can help to simplify the process and improve the assembly efficiency and the space utilization rate.

Fig. 5 is a schematic view of a partial structure of a battery pack according to an embodiment of the present application, referring to fig. 5, an embodiment of a second aspect of the present application provides a battery pack 200, including a plurality of battery cell modules 100 according to the first aspect of the present application, the plurality of battery cell modules 100 are arranged in a direction perpendicular to a stacking direction of the battery cells 101 and attached to each other, so as to form a battery pack 200 having a plurality of rows of battery cells 101, and the side plates 102 of each battery cell module 100 are located on the same side of the battery cell 101 group, so that only one side plate 102 is disposed between two adjacent rows of battery cells 101, thereby achieving sharing of the side plates 102, and a single row of battery cell modules 100 is formed into a battery cell module, which is convenient for assembly and transportation, can effectively reduce the difficulty of grouping process of the battery pack 200 having a plurality of rows of battery cells 101, and is beneficial to improving the assembly efficiency of the battery pack 200. In addition, two battery cell modules 100 adjacent in a direction perpendicular to the stacking direction of the battery cells 101 may be bonded to each other by means of adhesive tape or aerogel, thereby improving the stability of assembly.

Referring to fig. 5, in some embodiments, the battery pack 200 includes a plurality of columns of the battery cell modules 100, and the side plates 102 in each column of the battery cell modules 100 may have the same structure or may be different from each other, for example:

a liquid channel (not shown) and a water inlet 202 and a water outlet 203 which are communicated with the liquid channel are arranged on a side plate 102 of a part of the battery cell module 100, the side plate 102 of the structure can be used as a temperature adjusting plate 201 to cool or heat the battery cell 101, a liquid medium with a set temperature is injected into the liquid channel from the water inlet 202, and the liquid medium is discharged from the water outlet 203 after heat transfer is carried out with the battery cell 101 while circulating in the liquid channel, so that the cooling or heating of the battery cell 101 is realized, therefore, the liquid medium with the set temperature is injected into the liquid channel according to the operation requirement to carry out temperature adjustment on each battery cell 101, the battery cell 101 can be at a proper temperature, and a stable working state is kept; when the side plate serving as the temperature adjustment plate 201 is located between two columns of the battery cells 101, the temperature of two adjacent columns of the battery cells 101 can be adjusted at the same time.

The heat preservation board can also be made to partial electric core module 100's curb plate 102, for example, curb plate 102 is made by the material that has thermal insulation performance, for example bubble cotton, aerogel etc. realize the heat preservation effect to electric core 101, and curb plate 102 also can adopt conventional plate to make to set up thermal-insulated coating at the face, also can play the thermal-insulated effect of heat preservation. Therefore, the influence of the external temperature on the battery cells 101 can be effectively avoided, the mutual influence of the temperatures between two adjacent columns of the battery cells 101 in the battery pack 200 can be avoided, and the heat management of the battery pack 200 is facilitated.

Part of the side plates 102 of the battery cell modules 100 may also be structural steel beams, and thus may serve as the carrier beam 204, and when the battery cell modules 100 are installed in the battery box 300, the carrier beam 204 may be connected to the box wall of the battery box 300, so as to be used for carrying the battery pack 200 and other structures inside the battery pack, and is particularly suitable for the battery packs 200 with a large number of battery cell modules 100, and may improve the structural stability of the battery pack. The load beam 204 may be made of a hollow profile, have sufficient strength, and be light in weight, which helps to reduce the overall weight of the battery pack.

Fig. 6 is an exploded view of a part of a structure of a battery pack according to an embodiment of the present application, and referring to fig. 5 and 6, an embodiment of a third aspect of the present application provides a battery pack, which includes a battery box 300 and the battery pack 200 according to the second embodiment, where the battery box 300 includes a plurality of box walls 301, the plurality of box walls 301 surround to form a receiving cavity 302, and the battery pack 200 is received in the receiving cavity 302, and an outermost side of the battery pack 200 is connected to a corresponding box wall 301 along an arrangement direction of the battery cell modules 100. The battery pack 200 accommodated in the accommodation cavity 302 has a plurality of rows of the battery cells 101, thereby satisfying the requirement of high voltage and large capacity. Each electric core module 100 bonds each other among the group battery 200 to, the outside pastes with tank wall 301 and pastes and bonds, thereby improves the mode of battery package, effectively reduces the stability that the vibration of transport or use influences inside group battery 200.

In addition, as can be seen from the above, each column of the battery cells 101 individually forms one battery cell module 100, thereby facilitating assembly and transportation, and contributing to improvement of assembly efficiency of the battery pack 200. In addition, only one side plate 102 is arranged between two adjacent groups of battery cells 101, so that the side plates 102 are shared. With present single-row electric core through the fixed battery module that forms of two curb plates, compare the scheme that forms the battery package with a plurality of battery module holding in the assembly of battery box 300 again, saved the use of a curb plate to reduce and taken up the space that holds chamber 302, helped improving the volume space utilization of battery package.

In the battery pack of some embodiments, the battery box 300 further includes a bottom plate 306, the bottom plate 306 is provided with a cross beam 303, and the cross beam 303 crosses the accommodating cavity 302 perpendicular to the stacking direction of the battery cells 101, so that the overall strength of the battery box 300 can be improved, and thus the accommodating cavity 302 with a longer length can be provided in the stacking direction of the battery cells 101 to accommodate a larger number of battery cells 101. If the battery modules formed in a conventional grouping manner are stacked, the position of the cross beam 303 needs to be avoided, two groups of such battery modules need to be arranged on two sides of the cross beam 303, and when the position of the cross beam 303 deviates from the center of the battery box 300 or the number of the cross beams 303 is multiple, battery modules with different stacking lengths are required, so that multiple types of battery modules need to be configured, thereby increasing the process complexity. And the battery module of every this kind of structure all needs 2 end plates to support the both ends of tightly its inside a list of electric core respectively, and the adjacent battery module of the orientation of piling up of electric core forms the redundancy of end plate, occupies more inner space.

And the battery pack of this application embodiment adopts the group battery 200 that the electric core module 100 of a plurality of above-mentioned embodiments arranged and form, and electric core module 100 still includes middle part end plate 104, and middle part end plate 104 sets up in the middle part of a list of electric core 101, and middle part end plate 104 separates a list of electric core 101 and forms a plurality of parts, and middle part end plate 104 can support the electric core 101 of holding both sides in the direction of piling up of electric core 101 to the effort of resisting electric core 101 and piling up the direction, for example, the bulging force of electric core 101. An avoidance space 107 is formed between the middle end plate 104 and the battery cells 101 located on two sides of the middle end plate 104, and is used for avoiding the cross beam 303 of the battery box 300, so as to avoid assembly interference, similarly, referring to the foregoing embodiment, the position of the side plate 102 corresponding to the middle end plate 104 is provided with the avoidance port 109, the cross beam 303 can pass through the avoidance port 109 and the avoidance space 107 on the middle end plate 104, therefore, the battery cells 101 can leave the space of the cross beam 303 of the battery box 300 under the support of the middle end plate 104 and continuously stack to a required length, the use of various types of battery packs can be avoided, and thus, the assembly process is simplified.

Therefore, the battery cells 101 with a large number can be arranged in the accommodating cavity 302 along the stacking direction of the battery cells 101, so that the stacking length of the battery cells 101 can be increased, and the use of a plurality of battery modules and various battery modules can be avoided. In addition, the two parts of the battery cells 101 separated from the two sides of the middle end plate 104 share the same middle end plate 104, so that the use of the end plate is reduced, the internal structural components of the battery pack are reduced, and the space utilization rate is improved. The reduction of structural members also simplifies the structure and assembly process to some extent.

In the above embodiment, the number of the cross beams 303 of the battery box 300 may be 1, 2 or more, and the plurality of cross beams 303 are arranged at intervals along the stacking direction of the battery cells 101, so that the overall strength of the battery box 300 can be enhanced, and the overall structural stability of the battery pack is ensured. Correspondingly, the middle end plates 104 are respectively arranged at positions, corresponding to the cross beam 303, of each battery cell module 100 in the battery pack 200, so that avoidance of the cross beam 303 and abutting of the battery cells 101 in the stacking direction are realized.

Referring to fig. 4 and 6, in the battery pack of some embodiments, a hoisting portion 304 is further disposed on the cross beam 303, the hoisting portion 304 is provided with a hoisting hole 305 for penetrating a hoisting member (not shown, for example, a common hoisting screw) to connect with a vehicle body, so as to realize external hoisting connection of the battery box 300, correspondingly, a through hole 108 may be further disposed on the middle end plate 104 at a position corresponding to the hoisting portion 304, the through hole 108 penetrates through the middle end plate 104 along the height direction of the battery cell 101, and the hoisting portion 304 penetrates through the through hole 108, so that the internal structure of the accommodating cavity is more compact while avoiding the hoisting portion 304, and the space occupation is reduced. In some embodiments, the sling 304 is integrally formed with the beam 303, thereby simplifying assembly and improving assembly efficiency.

By the above, the battery cell module 100, the battery pack 200 and the battery pack of the embodiment of the application can be applied to a power battery system of a new energy automobile, can reduce the process difficulty, improve the assembly efficiency, improve the space utilization rate, and contribute to the improvement of the volume energy density of the battery pack, so that the requirements of high voltage and large capacity of the power battery are met.

The embodiments of the present application have been described in detail with reference to the drawings, but the present application is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present application. Furthermore, the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

Claims (10)

1. Electric core module, its characterized in that includes:

the battery cell group comprises a plurality of battery cells which are stacked along a set direction to form a column;

a curb plate, follow the direction of piling up of electric core extends to paste and lean on in one side of electric core group, each in the electric core group electric core connect respectively in the curb plate.

2. The cell module of claim 1, further comprising a middle end plate disposed in the middle of the cell group, the middle end plate separating a row of the cells of the cell group into a plurality of portions, and the middle end plate being capable of supporting the cells on both sides in a stacking direction of the cells.

3. The cell module of claim 2, wherein an avoidance space is formed between the middle end plate and the cells on both sides of the middle end plate for avoiding a cross beam of a battery box.

4. The battery cell module of claim 2, wherein an avoidance opening is formed in the side plate at a position corresponding to the middle end plate, and the avoidance opening is used for avoiding a cross beam of the battery box.

5. The battery cell module of claim 3, wherein a through hole is formed in the middle end plate, the through hole penetrates through the middle end plate in the height direction of the battery cell, and the through hole is used for avoiding the hoisting part on the cross beam.

6. The battery pack, characterized by comprising a plurality of the cell modules of any one of claims 1 to 5, wherein the plurality of the cell modules are arranged along a direction perpendicular to the cell stacking direction and are attached to each other, and the side plates of each of the cell modules are located on the same side of the cell pack.

7. Battery package, its characterized in that includes:

the battery pack of claim 6; and the number of the first and second groups,

the battery box comprises a plurality of box walls, a containing cavity is formed by enclosing the box walls, the battery pack is contained in the containing cavity, and the outermost side of the battery pack is connected with the corresponding box walls.

8. The battery pack according to claim 7, wherein the battery box further includes a bottom plate, the bottom plate is connected to the bottom of the box wall, a cross beam is disposed on the bottom plate, the cross beam is located in the accommodating cavity and perpendicular to the stacking direction of the battery cells, and each of the battery cell modules further includes a middle end plate corresponding to the position of the cross beam, the middle end plate is located in the middle of the battery cell group, an avoiding space is formed between the middle end plate and the battery cells located on both sides of the middle end plate, and the cross beam is inserted into the avoiding space.

9. The battery pack according to claim 8, wherein the beam is provided with a hoisting part, the hoisting part is provided with a hoisting hole for inserting a hoisting piece to connect the vehicle body, the middle end plate is provided with a through hole, the through hole penetrates through the middle end plate along the height direction of the battery cell, and the hoisting part is inserted into the through hole.

10. The battery pack according to claim 9, wherein the hanger is integrally formed with the cross member.

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