CN217281105U

CN217281105U - Limiting device of power battery cell and electric vehicle

Info

Publication number: CN217281105U
Application number: CN202221130388.3U
Authority: CN
Inventors: 黄红光; 曾勇; 华超
Original assignee: GAC Aion New Energy Automobile Co Ltd
Current assignee: GAC Aion New Energy Automobile Co Ltd
Priority date: 2022-05-11
Filing date: 2022-05-11
Publication date: 2022-08-23
Anticipated expiration: 2032-05-11

Abstract

The embodiment of the application provides a stop device and electric vehicle of power battery electricity core, relates to battery technical field. The limiting device of the power battery cell comprises a limiting mechanism, an adhesive mechanism and a battery pack frame body; the limiting mechanism comprises a plurality of limiting grooves, the limiting grooves are arranged side by side, the width of each limiting groove is matched with that of a battery cell to be placed, the limiting grooves are used for placing the battery cell to be placed, and the limiting mechanism is an insulating limiting mechanism; the gluing mechanism is arranged between the limiting mechanism and the battery pack frame body; the battery pack frame comprises a plurality of battery pack placing grooves, the battery pack placing grooves are used for placing the battery packs, and the battery packs comprise a plurality of battery cores to be placed. The limiting device of the power battery cell can realize insulation and limiting of the cell and realize the technical effect of improving the cell assembly efficiency.

Description

Limiting device of power battery cell and electric vehicle

Technical Field

The application relates to the technical field of batteries, in particular to a limiting device of a power battery cell and an electric vehicle.

Background

At present, a square shell of a lithium battery is provided with a layer of insulating film outside the battery core, and the purpose is to prevent electric leakage of the battery core. In the power battery pack without the module, the battery cell is generally directly put into a box body of the battery pack for assembly, which is called that the battery cell is directly put into a shell. The battery core is fixed with the box body through structural adhesive.

In the prior art, the current non-modular battery pack with a battery core directly entering a shell has the following problems to be solved: the insulation problem is solved, because the battery cell is directly contacted with the box body, and the insulation outside the battery cell is usually only 0.1mm thick, the risk of the rupture of the insulation film exists, and the condition that the box body is conductive to the battery cell occurs; the problem of positioning the battery core in the shell needs to be solved, the number of the battery cores of the conventional 400km endurance power battery reaches up to hundreds of battery cores, and the positioning problem of battery core assembly is urgently needed to be solved.

SUMMERY OF THE UTILITY MODEL

The purpose of the embodiment of the application is to provide a stop device and an electric vehicle of power battery electricity core, can realize the insulation and spacing of electricity core to realize improving the technical effect of electricity core assembly efficiency.

In a first aspect, an embodiment of the present application provides a limiting device for a power battery cell, including a limiting mechanism, an adhesive mechanism, and a battery pack frame;

the limiting mechanism comprises a plurality of limiting grooves, the limiting grooves are arranged side by side, the width of each limiting groove is matched with that of a battery cell to be placed, the limiting grooves are used for placing the battery cell to be placed, and the limiting mechanism is an insulating limiting mechanism;

the gluing mechanism is arranged between the limiting mechanism and the battery pack frame body;

the battery pack frame comprises a plurality of battery pack placing grooves, the battery pack placing grooves are used for placing the battery packs, and the battery packs comprise a plurality of battery cells to be placed.

In the implementation process, the limiting mechanism in the limiting device of the power battery cell is made of insulating materials and has an insulating effect, the battery cell is placed on the limiting groove of the limiting mechanism and is connected to the battery pack frame body through the limiting mechanism, the possibility that the battery cell is directly contacted with the battery pack frame body is eliminated, and insulation is achieved; meanwhile, the limiting mechanism has a limiting effect, and the limiting mechanism is provided with a plurality of limiting grooves, so that the battery cell can be directly placed in the limiting grooves, very high positioning accuracy can be ensured, and the limiting grooves are convenient for assembling the battery cell; therefore, the limiting device of the power battery cell can realize insulation and limiting of the cell and realize the technical effect of improving the cell assembly efficiency.

Further, the spacing groove includes bottom plate and first curb plate, the bottom plate with first curb plate sets up perpendicularly, one side of bottom plate with wait to place battery electricity core looks butt, the opposite side of bottom plate with sticky mechanism looks butt, first curb plate with wait to place battery electricity core looks butt.

In the implementation process, the bottom plate and the first side plate respectively limit the battery cells to be placed from two different directions.

Further, the limiting groove further comprises a second side plate, and the second side plate is perpendicular to the bottom plate and the first side plate respectively.

In the implementation process, the bottom plate, the first side plate and the second side plate respectively limit the battery cells to be placed from three different directions.

Furthermore, the limiting groove comprises a third side plate, the third side plate is respectively perpendicular to the bottom plate and the first side plate, and the third side plate is parallel to the second side plate.

In the implementation process, the bottom plate, the first side plate, the second side plate and the third side plate respectively limit the battery cells to be placed from four different directions.

Furthermore, the limiting mechanism comprises a first limiting mechanism and a second limiting mechanism, the first limiting mechanism and the second limiting mechanism are symmetrically arranged, and the first limiting mechanism and the second limiting mechanism are respectively arranged at two ends of the battery cell to be placed.

In the implementation process, the battery cell to be placed is fixed through the symmetrical first limiting mechanism and the symmetrical second limiting mechanism.

Further, the gluing mechanism is structural glue.

Furthermore, the limiting groove is provided with a counter bore.

In the implementation process, the blind hole processed from the bottom surface of the limiting groove to the inside of the object in the counter bore can be used for installing a bolt or other connecting parts.

Furthermore, the limiting device further comprises a fixing mechanism, and the battery pack frame body is fixedly installed with the counter bore through the fixing mechanism.

In the implementation process, the fixing mechanism is used for fixedly mounting the battery pack frame body and the limiting mechanism.

Further, the fixing mechanism is a countersunk bolt.

In the implementation process, the limiting mechanism is screwed on the frame of the battery pack frame body through the countersunk head bolt.

In a second aspect, an embodiment of the present application provides an electric vehicle, including the limiting device of the power battery electric core of any one of the first aspects.

Additional features and advantages of the disclosure will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the above-described technology disclosed herein.

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

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 of the present application 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 that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a limiting device of a power battery cell provided in an embodiment of the present application;

fig. 2 is a schematic structural diagram of a limiting mechanism provided in the embodiment of the present application;

fig. 3 is a schematic view of a partially enlarged structure of a limiting mechanism provided in an embodiment of the present application;

fig. 4 is a first partially enlarged structural schematic diagram of a limiting device of a power battery cell provided in an embodiment of the present application;

fig. 5 is a second partially enlarged structural schematic diagram of a limiting device of a power battery cell provided in an embodiment of the present application.

Icon: a limiting mechanism 100; a limiting groove 110; a first side plate 111; a second side panel 112; the third side panel 113; a counterbore 114; a base plate 120; a first limit mechanism 131; a second limit mechanism 132; an adhesive mechanism 200; a battery pack frame body 300; a battery pack placement groove 310; a battery cell 400 is to be placed; the mechanism 500 is fixed.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as the case may be.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or a point connection; either directly or indirectly through intervening media, or may be an internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific nature and configuration may be the same or different), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.

The embodiment of the application provides a limiting device of a power battery cell and an electric vehicle, which can be applied to a battery pack with high energy density and high temperature control performance; the limiting mechanism in the limiting device of the power battery cell is made of insulating materials and has an insulating effect, the battery cell is placed on the limiting groove of the limiting mechanism and then connected to the battery pack frame body through the limiting mechanism, the possibility that the battery cell is directly contacted with the battery pack frame body is eliminated, and insulation is achieved; meanwhile, the limiting mechanism has a limiting effect, and the electric core can be directly placed in the limiting groove due to the fact that the limiting mechanism is provided with the plurality of limiting grooves, so that high positioning accuracy can be guaranteed, and the limiting grooves facilitate the assembly of the electric core; therefore, the limiting device of the power battery cell can realize insulation and limiting of the cell and realize the technical effect of improving the cell assembly efficiency.

Referring to fig. 1 to fig. 3, fig. 1 is a schematic structural view of a limiting device of a power battery cell provided in an embodiment of the present application, fig. 2 is a schematic structural view of a limiting mechanism provided in the embodiment of the present application, and fig. 3 is a partially enlarged schematic structural view of the limiting mechanism provided in the embodiment of the present application; the limiting device of the power battery cell comprises a limiting mechanism 100, an adhesive mechanism 200 and a battery pack frame body 300, and a battery cell 400 is to be placed.

Exemplarily, the limiting mechanism 100 includes a plurality of limiting grooves 110, the plurality of limiting grooves 110 are arranged side by side, a width of the limiting groove 110 matches with a width of the battery cell 400 to be placed, the limiting groove 110 is used for placing the battery cell to be placed, and the limiting mechanism 100 is an insulating limiting mechanism.

Illustratively, the limiting mechanism 100 is made of an insulating material and has an insulating function; wait to place battery electricity core 400 and put on stop gear 100, rethread stop gear 100 is connected on battery package framework 300, has stopped the possibility that electric core direct and battery package framework 300 contact, has accomplished to insulate.

Optionally, the limiting mechanism 100 is made of insulating and heat-insulating materials, which may be PBT + GF30, or PC + ABS. The limiting grooves 110 of the limiting mechanism 100 are arranged in a line, and limit the four sides of the battery cell 400 to be placed. Because the metal has very good heat conductivity, stop gear 100 selects the polymer material that the heat-proof quality is good on the selection material, has avoided electric core and battery package frame body 300's direct contact, has very good heat-proof quality.

Illustratively, the gluing mechanism 200 is disposed between the spacing mechanism 100 and the battery pack frame 300.

Illustratively, the adhesive mechanism 200 is coated on the battery pack frame 300; the battery cell to be placed is placed in the limiting mechanism 100, and the limiting mechanism 10 is in sufficient contact with and bonded to the gluing mechanism 200, so that the limiting mechanism 100 is firmly mounted on the battery pack frame 300.

Illustratively, the battery pack frame 300 includes a plurality of battery pack accommodating slots 310, the battery pack accommodating slots 310 are used for accommodating battery packs, and the battery packs include a plurality of battery cells 400 to be accommodated.

In some embodiments, the limiting mechanism 100 in the limiting device of the power battery cell is made of an insulating material and has an insulating effect, the cell is placed on the limiting groove 110 of the limiting mechanism 100 and then connected to the battery pack frame 300 through the limiting mechanism 100, so that the possibility that the cell is directly contacted with the battery pack frame 300 is eliminated, and insulation is achieved; meanwhile, the limiting mechanism 100 has a limiting effect, and since the limiting mechanism is provided with a plurality of limiting grooves 110, the battery cell can be directly placed in the limiting grooves 110, so that high positioning accuracy can be ensured, and the limiting grooves 110 are convenient for assembling the battery cell; therefore, the limiting device of the power battery cell can realize insulation and limiting of the cell and realize the technical effect of improving the cell assembly efficiency.

Exemplarily, the limiting groove 110 includes a bottom plate 120 and a first side plate 111, the bottom plate 120 is perpendicular to the first side plate 111, one side of the bottom plate 120 abuts against the battery cell 400 to be placed, the other side of the bottom plate 120 abuts against the adhesive mechanism 200, and the first side plate 111 abuts against the battery cell 400 to be placed.

For example, the bottom plate 120 and the first side plate 111 limit the battery cells 400 to be placed from two different directions.

Illustratively, the limiting groove 110 further includes a second side plate 112, and the second side plate 112 is perpendicular to the bottom plate 120 and the first side plate 111, respectively.

For example, the bottom plate 120, the first side plate 111, and the second side plate 112 respectively limit the battery cells 400 to be placed from three different directions.

Illustratively, the limiting groove 110 includes a third side plate 113, the third side plate 113 is disposed perpendicular to the bottom plate and the first side plate, and the third side plate is disposed parallel to the second side plate.

For example, the bottom plate 120, the first side plate 111, the second side plate 112, and the third side plate 113 limit the battery cells 400 to be placed from four different directions.

Exemplarily, the limiting mechanism 100 includes a first limiting mechanism 131 and a second limiting mechanism 132, the first limiting mechanism 131 and the second limiting mechanism 132 are symmetrically disposed, and the first limiting mechanism 131 and the second limiting mechanism 132 are respectively disposed at two ends of the battery cell 400 to be placed.

The battery cell 400 to be placed is fixed by the symmetrical first and second limiting

mechanisms

131 and 132, for example.

Illustratively, the adhesive mechanism 200 is a structural adhesive.

Illustratively, the structural adhesive is an adhesive which has high strength (compressive strength >65MPa, steel-steel positive tensile bonding strength >30MPa, and shear strength >18MPa), can bear large load, is aging-resistant, fatigue-resistant and corrosion-resistant, has stable performance in the expected life, and is suitable for bearing strong structural part bonding.

Referring to fig. 4 and fig. 5, fig. 4 is a first partially enlarged structural schematic view of a limiting device of a power battery cell provided in an embodiment of the present application, and fig. 5 is a second partially enlarged structural schematic view of the limiting device of the power battery cell provided in the embodiment of the present application.

Illustratively, the restraint slot 110 is provided with a counter-sunk hole 114.

Illustratively, the counter bored hole 114 is a blind hole formed from the bottom surface of the retaining groove 110 toward the inside of the object, and may be used for mounting a bolt or other connecting member.

Exemplarily, the limiting device of the power battery cell further includes a fixing mechanism 500, and the battery pack frame 300 is fixedly mounted with the counter bore 114 through the fixing mechanism 500.

Illustratively, the fixing mechanism 500 is used for fixing and mounting the battery pack frame body 300 and the limiting mechanism 100.

Illustratively, the securing mechanism 500 is a countersunk bolt.

Illustratively, the limiting mechanism 100 is screwed on the frame of the battery pack frame 300 by a countersunk head bolt.

In some embodiments, the top surface of the countersunk head bolt is lower than the bottom surface of the spacing mechanism 100; therefore, the countersunk head bolt can be prevented from contacting the surface of the battery cell 400 to be placed, and the damage and the scratching of the insulating surface of the cell are avoided.

Exemplarily, the embodiment of the present application provides an electric vehicle, which includes the limiting device of a power battery cell shown in fig. 1 to 5.

For example, in the limiting device for a power battery cell provided in the embodiment of the present application, the limiting mechanism 100 is made of an insulating material, and can satisfy the cell insulating effect, the limiting effect and the heat insulating effect of the non-modular cell in the case; optionally, the height of the limiting mechanism 100 is 5mm, the thickness is 3mm, and the chamfer angle is r 1; through the chamfer, can prevent that sharp-pointed angle from haring the electric core.

Exemplarily, the limiting device of the power battery cell provided by the embodiment of the application has an insulating effect. Because the limiting mechanism 100 is made of insulating materials, the battery core is placed on the limiting mechanism 100 and then connected to the battery pack frame body 300 through the limiting mechanism 100, the possibility that the battery core is directly contacted with the battery pack frame body 300 is eliminated, and insulation is achieved; meanwhile, after the countersunk head bolt is screwed, the surface of the countersunk head bolt is lower than the large surface of the limiting mechanism 100 contacted with the battery cell, so that the possibility that the bolt is contacted with the battery cell and the battery cell is scratched is also avoided.

Exemplarily, the limiting device of the power battery cell provided by the embodiment of the application has a limiting effect. Because stop gear 100 has designed many spacing grooves 110, the electric core can directly be placed in spacing groove 110, stop gear 100 can be accomplished by injection molding process or machine tooling, and the machining precision is very high, so can guarantee very high positioning accuracy.

Exemplarily, the limiting device of the power battery cell provided by the embodiment of the application has a heat insulation effect. The metal has very good thermal conductivity, and stop gear 100 selects the polymer material that the heat-proof quality is good on the selection material, has avoided the direct contact of electric core with the battery package framework, so has very good heat-proof quality.

In all embodiments of the present application, the terms "large" and "small" are relatively speaking, and the terms "upper" and "lower" are relatively speaking, so that descriptions of these relative terms are not repeated herein.

It should be appreciated that reference throughout this specification to "in this embodiment," "in an embodiment of the present application," or "as an alternative implementation" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in this embodiment," "in the examples of the present application," or "as an alternative embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. Those skilled in the art should also appreciate that the embodiments described in this specification are all alternative embodiments and that the acts and modules involved are not necessarily required for this application.

In various embodiments of the present application, it should be understood that the size of the serial number of each process described above does not mean that the execution sequence is necessarily sequential, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A limiting device for a power battery cell is characterized by comprising a limiting mechanism, an adhesive mechanism and a battery pack frame body;

2. The limiting device of the power battery electric core according to claim 1, wherein the limiting groove comprises a bottom plate and a first side plate, the bottom plate is perpendicular to the first side plate, one side of the bottom plate abuts against the battery electric core to be placed, the other side of the bottom plate abuts against the gluing mechanism, and the first side plate abuts against the battery electric core to be placed.

3. The limiting device for the electric core of the power battery of claim 2, wherein the limiting groove further comprises a second side plate, and the second side plate is perpendicular to the bottom plate and the first side plate respectively.

4. The limiting device for power battery cells according to claim 3, wherein the limiting groove comprises a third side plate, the third side plate is perpendicular to the bottom plate and the first side plate, and the third side plate is parallel to the second side plate.

5. The limiting device for power battery cells according to claim 1, wherein the limiting mechanism comprises a first limiting mechanism and a second limiting mechanism, the first limiting mechanism and the second limiting mechanism are symmetrically disposed, and the first limiting mechanism and the second limiting mechanism are respectively disposed at two ends of the battery cells to be placed.

6. The limiting device for electric cores of power batteries according to claim 1, wherein the gluing mechanism is a structural adhesive.

7. The limiting device for power battery cells according to claim 1, wherein the limiting groove is provided with a counter bore.

8. The limiting device for the power battery electric core according to claim 7, further comprising a fixing mechanism, wherein the battery pack frame is fixedly mounted with the counter bore through the fixing mechanism.

9. The limiting device for power battery cells according to claim 8, wherein the fixing mechanism is a countersunk bolt.

10. An electric vehicle, characterized by comprising a limiting device of a power battery cell according to any one of claims 1 to 9.