CN220984726U - Cell module fixed knot constructs - Google Patents

Abstract

In order to solve the problem that the prior battery pack has poor structural strength and cannot effectively dissipate heat, the utility model provides a battery cell module fixing structure, wherein a first insulating bracket and a second insulating bracket are respectively arranged at two ends of a heat dissipation bracket, the heat dissipation bracket is provided with a plurality of battery cell mounting holes, the battery cell mounting holes are used for placing battery cells, and the first insulating bracket and/or the second insulating bracket are connected with the heat dissipation bracket through a connecting mechanism; the first insulating support and/or the second insulating support are/is connected with the radiating support through the connecting mechanism to form a whole, so that the fixing structure of the battery cell module is more stable, and the battery cell module is prevented from being loosened easily in the use process; the first insulating support and the second insulating support provide protection for the insulation of the positive electrode and the negative electrode of the battery cell; the heat dissipation bracket can play a role in protecting the battery cell when external machinery collides with the battery pack; the heat dissipation support can also enable the temperature of the battery module cell to be conducted outwards along the aluminum block, and the problem that the heat accumulation and heat dissipation performance of an existing battery pack is poor can be effectively solved.

Description

Cell module fixed knot constructs

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery cell module fixing structure.

Background

Currently, lithium batteries have been widely used in portable appliances such as portable computers, video cameras, mobile communication with their characteristic performance advantages. While the developed high-capacity lithium battery has been tried in electric vehicles, it is expected to become one of the main power sources of electric vehicles in the 21 st century, and will find application in satellites, aerospace and energy storage. With the shortage of energy and the environmental pressure of the world, lithium batteries are widely applied to the electric vehicle industry, particularly the appearance of lithium iron phosphate batteries, and the development and application of the lithium battery industry are promoted.

The existing cell lithium ion battery pack is usually used for fixing the cell by gluing and bonding/upper and lower plastic brackets on the surface of the cell; the operation is simple, but has the following disadvantages: 1) The formed battery pack has poor structural strength and cannot meet the design requirement of products with high structural strength; 2) Under the condition of high-rate high-current discharge, the temperature of the battery cell is extremely increased, heat in the battery module is accumulated and cannot be effectively diffused outwards, the temperature of the middle battery cell of the battery pack is higher than that of the outer battery cell, the temperature difference of the battery cell in the battery pack is large, the working time and the service life of the battery pack are influenced by high-temperature protection of the battery, and even thermal runaway is caused, so that safety accidents such as fire explosion and the like are caused; therefore, how to overcome the above-mentioned technical problems and drawbacks becomes an important problem to be solved.

Disclosure of utility model

Aiming at the problems that the prior battery pack has poor structural strength and cannot effectively dissipate heat, the utility model provides a battery cell module fixing structure.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

The utility model provides a battery cell module fixing structure which comprises a first insulating support, a heat dissipation support and a second insulating support, wherein the first insulating support and the second insulating support are respectively arranged at two ends of the heat dissipation support, the heat dissipation support is provided with a plurality of battery cell mounting holes, the battery cell mounting holes are communicated with two ends of the heat dissipation support and are used for placing battery cells, and the first insulating support and/or the second insulating support are connected with the heat dissipation support through a connecting mechanism.

Optionally, the connection mechanism includes: the first connecting mechanism, the second connecting mechanism and the third connecting mechanism;

the first insulating support and the heat dissipation support are connected through the first connecting mechanism;

The second insulating support and the heat dissipation support are connected through the second connecting mechanism;

And/or the first insulating support, the heat dissipation support and the second insulating support are connected through the third connecting mechanism.

Optionally, the first coupling mechanism includes first spacing boss and the first spacing recess of cooperation use, first spacing boss sets up first insulating support is close to the one side of heat dissipation support, first spacing recess sets up the heat dissipation support is close to one side of first insulating support.

Optionally, the second coupling mechanism includes the spacing boss of second and the spacing recess of second that the cooperation was used, the spacing boss of second sets up the second insulating support is close to one side of heat dissipation support, the spacing recess of second sets up the heat dissipation support is close to one side of second insulating support.

Optionally, the third coupling mechanism includes screw rod, screw rod mounting groove, screw rod mounting hole, nut mounting hole and nut, screw rod mounting groove intercommunication the both sides of first insulating support, screw rod mounting hole intercommunication the both ends of heat dissipation support, nut mounting hole intercommunication the both sides of second insulating support, screw rod mounting groove the screw rod mounting hole with the center pin coincidence of nut mounting hole, the screw rod passes in proper order the screw rod mounting groove the screw rod mounting hole with the nut mounting hole is in the nut mounting hole with nut threaded connection.

Optionally, the first insulating support is provided with a plurality of, and a plurality of first insulating supports are connected through fourth coupling mechanism.

Optionally, the fourth coupling mechanism includes the spacing boss of third and the spacing recess of third that the cooperation was used, the spacing boss of third with the spacing recess of third sets up respectively at adjacent two the side that first insulating support is close to each other.

Optionally, a first cell slot is arranged at a position of the first insulating bracket opposite to the cell mounting hole; and a second battery cell slot is arranged at the position of the second insulating bracket opposite to the battery cell mounting hole.

Optionally, the first electric core slot position with the second electric core slot all includes first mounting hole and second mounting hole, first mounting hole is used for right electric core casing tip is spacing, the second mounting hole is used for right electric core positive pole post or electric core negative pole post are spacing.

Optionally, the first insulating bracket and the second insulating bracket are made of plastic materials; the heat dissipation support is made of aluminum materials.

According to the cell module fixing structure provided by the utility model, the first insulating support and the second insulating support are connected with the radiating support through the connecting mechanism to form a whole, so that the cell module fixing structure is more stable, and easy loosening in the use process is avoided; the first insulating support and the second insulating support provide protection for the insulation of the positive electrode and the negative electrode of the battery cell; the heat dissipation bracket has the functions of enhancing the structural strength and heat conduction, enhances the overall structural strength of the module, and can protect the battery cell when the outside machinery collides with the battery pack; the problem of poor structural strength of the conventional battery pack can be effectively solved; the heat dissipation support can also enable the temperature of the battery module cell to be conducted outwards along the aluminum block rapidly, and the problem that the heat collection and heat dissipation performance of an existing battery pack is poor can be effectively solved, so that the effect of reinforcing the structural strength of the battery pack is achieved, and the heat collection and heat dissipation performance of the existing battery pack is improved.

Drawings

Fig. 1 is a first assembly view of a cell module securing structure according to one embodiment of the present utility model;

fig. 2 is a second assembly view of a cell module securing structure according to one embodiment of the present utility model;

fig. 3 is an exploded view of a cell module securing structure according to one embodiment of the present utility model;

Fig. 4 is a bottom view of a first insulating support in a cell module securing structure according to an embodiment of the present utility model;

fig. 5 is a top view of a second insulating holder in a cell module securing structure according to an embodiment of the present utility model;

reference numerals in the drawings of the specification are as follows:

1-a first insulating support; 11-a first limit boss; 12-a screw assembly groove; 13-a third limit boss; 14-a third limit groove; 15-a first cell slot; 151-first mounting holes a; 152-a first mounting hole b; 2-a heat dissipation bracket; 21-a cell mounting hole; 22-a first limit groove; 23-a second limit groove; 24-screw mounting holes; 3-a second insulating support; 31-a second limit boss; 32-nut mounting holes; 33-a second cell slot; 331-a second mounting hole a; 332-a second mounting hole b; 4-an electric core; 41-a cell positive pole; 42-a cell negative electrode post; 51-screw; 52-nut.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects solved by the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "side", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the utility model. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the term "connected" should be interpreted broadly, and for example, it may be a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 to 3, in an embodiment, the present application provides a cell module fixing structure, which includes a first insulating support 1, a heat dissipation support 2, and a second insulating support 3, where the first insulating support 1 and the second insulating support 3 are respectively disposed at two ends of the heat dissipation support 2, the heat dissipation support 2 is provided with a plurality of cell mounting holes 21, the cell mounting holes 21 are communicated with two ends of the heat dissipation support 2 and are used for placing a cell 4, and the first insulating support 1 and/or the second insulating support 3 are connected with the heat dissipation support 2 through a connection mechanism.

Specifically, the battery cell 4 is in a cylindrical shape, a rectangular shape or other shapes, the battery cell mounting hole 21 is in a circular shape, a rectangular shape or other shapes, and the battery cell mounting hole 21 is the same as the battery cell 4 in shape and is used for accommodating the battery cell 4.

Further, the thickness of the heat dissipation bracket 2 is smaller than the length of the battery cell 4, so that the middle part of the battery cell 4 is fixed by the heat dissipation bracket 2, and two ends are respectively fixed by the first insulating bracket 1 and the second insulating bracket 3.

In the application, the first insulating support 1 and the second insulating support 3 are made of insulating materials, and provide protection for the insulation of the positive electrode and the negative electrode of the battery cell 4.

Furthermore, the heat dissipation bracket 2 has the functions of enhancing the structural strength and heat conduction, the heat dissipation bracket enhances the overall structural strength of the module, and the heat dissipation bracket can play a role in protecting the battery cell 4 when external machinery collides with the battery pack; the problem of poor structural strength of the conventional battery pack can be effectively solved; the heat dissipation support can also enable the temperature of the battery module cell 4 to be conducted outwards along the aluminum block, so that the problem that the heat collection and heat dissipation performance of an existing battery pack is poor can be effectively solved, the effect of reinforcing the structural strength of the battery pack is achieved, and the heat collection and heat dissipation performance of the existing battery pack is improved.

As shown in fig. 3, in one embodiment, the connection mechanism includes: the first connecting mechanism, the second connecting mechanism and the third connecting mechanism;

the first insulating bracket 1 and the heat dissipation bracket 2 are connected through the first connecting mechanism;

The second insulating bracket 3 and the heat dissipation bracket 2 are connected through the second connecting mechanism;

and/or the first insulating holder 1, the heat dissipation holder 2, and the second insulating holder 3 are connected by the third connecting mechanism.

Specifically, the first connecting mechanism fixedly connects the first insulating bracket 1 and the heat dissipation bracket 2; the second connecting mechanism fixedly connects the second insulating bracket 3 and the heat radiating bracket 2; the first insulating bracket 1, the heat dissipation bracket 2 and the second insulating bracket 3 are connected into a whole through the first connecting mechanism and the second connecting mechanism.

Further, the third connecting mechanism further reinforces the first insulating support 1, the heat dissipation support 2 and the second insulating support 3, and the third connecting mechanism is connected into a whole, so that the cell module fixing structure is more stable, and easy loosening in the use process is avoided.

As shown in fig. 3, in an embodiment, the first connection mechanism includes a first limiting boss 11 and a first limiting groove 22 that are matched, where the first limiting boss 11 is disposed on a side of the first insulating support 1 near the heat dissipation support 2, and the first limiting groove 22 is disposed on a side of the heat dissipation support 2 near the first insulating support 1.

Specifically, the cross section of the first limiting boss 11 is rectangular, trapezoidal or arc, and the first limiting groove 22 is a rectangular groove, a trapezoid groove or an arc groove which are matched for use.

The first limiting boss 11 and the first limiting groove 22 are connected in a vertical direction, so that the first insulating bracket 1 and the heat dissipation bracket 2 can only move relatively in the vertical direction but cannot move in other directions.

Further, the cross section of the first limiting boss 11 is preferably trapezoidal, at this time, the first limiting boss 11 may be disposed at an edge portion of the lower surface of the first insulating support 1, and the first limiting groove 22 is formed on a side surface of the heat dissipation support 2, so as to reduce the usage area of the first limiting groove 22 in the heat dissipation support 2, and increase the usage efficiency of the heat dissipation support 2. And the manufacturing method of the trapezoid first limiting boss 11 is simple and convenient to process.

As shown in fig. 3, in an embodiment, the second connection mechanism includes a second limiting boss 31 and a second limiting groove 23 that are matched, where the second limiting boss 31 is disposed on a side of the second insulating support 3 near the heat dissipation support 2, and the second limiting groove 23 is disposed on a side of the heat dissipation support 2 near the second insulating support 3.

Specifically, the cross section of the second limiting boss 31 is rectangular, trapezoidal or arc, and the second limiting groove 23 is a rectangular groove, a trapezoid groove or an arc groove which are matched for use.

The second limiting boss 31 and the second limiting groove 23 are connected in a vertical direction, so that the second insulating bracket 3 and the heat dissipating bracket 2 can only move relatively in the vertical direction but cannot move in other directions.

Further, the cross section of the second limiting boss 31 is preferably trapezoidal, at this time, the second limiting boss 31 may be disposed at an edge portion of the lower surface of the second insulating support 3, and the second limiting groove 23 is formed on a side surface of the heat dissipation support 2, so as to reduce the usage area of the second limiting groove 23 on the heat dissipation support 2, and increase the usage efficiency of the heat dissipation support 2.

In another embodiment, when the central axes of the first limiting groove 22 and the second limiting groove 23 are the same straight line, limiting grooves penetrating through two ends of the heat dissipation bracket 2 may be directly formed on the side surface of the heat dissipation bracket 2, and at this time, the first limiting groove 22 and the second limiting groove 23 are overlapped.

As shown in fig. 1-3, in an embodiment, the third connection mechanism includes a screw 51, a screw assembly groove 12, a screw mounting hole 24, a nut mounting hole 32 and a nut 52, where the screw assembly groove 12 communicates with two sides of the first insulating bracket 1, the screw mounting hole 24 communicates with two ends of the heat dissipation bracket 2, the nut mounting hole 32 communicates with two sides of the second insulating bracket 3, central axes of the screw assembly groove 12, the screw mounting hole 24 and the nut mounting hole 32 coincide, and the screw 51 sequentially passes through the screw assembly groove 12, the screw mounting hole 24 and the nut mounting hole 32 in the nut mounting hole 32 to be in threaded connection with the nut 52.

Specifically, the screw assembly grooves 12 are uniformly distributed on the first insulating support 1, the nut mounting holes 32 are uniformly distributed on the second insulating support 3, and the length of the screw 51 is smaller than the sum of the thicknesses of the first insulating support 1, the heat dissipation support 2 and the second insulating support 3;

One end of the screw rod 51 is provided with a screw cap, the outside of the other end of the screw rod 51 is provided with threads, the screw cap of the screw rod 51 is positioned in the screw rod assembly groove 12, the end part of the screw rod does not protrude out of the screw rod assembly groove 12, the threads are in threaded connection with the nuts 52, and the end part of the screw rod 51 and the nuts 52 are positioned in the nut mounting holes 32 and do not protrude out of the nut mounting holes 32.

The first insulating support 1, the heat dissipation support 2 and the second insulating support 3 are connected into a whole through the first connecting mechanism and the second connecting mechanism, at this time, the first insulating support 1, the heat dissipation support 2 and the second insulating support 3 can only move relatively in the vertical direction, the first insulating support 1, the heat dissipation support 2 and the second insulating support 3 are connected into a whole under the action of the third connecting mechanism, and the relative movement of the first insulating support 1, the heat dissipation support 2 and the second insulating support 3 in the vertical direction is avoided, so that the stability of the battery cell module fixing structure is improved, the battery pack is prevented from being loosened easily in the use process, and the service performance of the battery pack is influenced.

As shown in fig. 1 to 3, in an embodiment, a plurality of first insulating holders 1 are provided, and a plurality of first insulating holders 1 are connected by a fourth connection mechanism.

Specifically, a plurality of the first insulating holders 1 are connected by the fourth connection mechanism, thereby increasing the number of connections of the battery cells 4.

Further, a plurality of heat dissipation brackets 2 are also provided, and a plurality of heat dissipation brackets 2 are connected through a fourth connection mechanism, so that the number of connections of the battery cells 4 is increased.

In an embodiment, the heat dissipation bracket 2 includes a heat dissipation bracket a and a heat dissipation bracket b, a battery cell 4 is disposed in the battery cell mounting hole a of the heat dissipation bracket a, one end of the battery cell 4, which is close to the first insulating bracket 1a, is an anode, and one end of the battery cell 4, which is far away from the first insulating bracket 1a, is a cathode; the battery cell 4 is placed in the battery cell mounting hole b of the heat dissipation bracket b, one end of the battery cell 4, which is close to the first insulating bracket 1b, is a negative electrode, and one end of the battery cell 4, which is far away from the first insulating bracket 1b, is a positive electrode.

The first insulating support 1 comprises a first insulating support a and a first insulating support b, one end of the battery cell 4, which is contacted with the first insulating support a, is an anode, and one end of the battery cell 4, which is contacted with the first insulating support b, is a cathode.

As shown in fig. 1 to 3, in an embodiment, the fourth connection mechanism includes a third limiting boss 13 and a third limiting groove 14 that are used in cooperation, where the third limiting boss 13 and the third limiting groove 14 are respectively disposed on the side surfaces of two adjacent first insulating supports 1 that are close to each other.

Specifically, the cross section of the third limiting boss 13 is rectangular, trapezoidal or arc, and the third limiting groove 14 is a rectangular groove, a trapezoid groove or an arc groove which are matched for use.

Further, the cross section of the third limiting boss 13 is preferably trapezoidal, at this time, the third limiting boss 13 may be disposed at an edge portion of the side surface of the first insulating support 1, the first limiting groove 22 is formed at an edge portion of the side surface of the first insulating support 1, and the third limiting boss 13 and the first limiting groove 22 are connected to the side surface of the first insulating support 1, so that the usage area of the third limiting boss 13 and the third limiting groove 14 in the heat dissipation support 2 is reduced, and the usage efficiency of the heat dissipation support 2 is increased. And the manufacturing method of the trapezoid third limiting boss 13 is simple and convenient to process.

As shown in fig. 3, in an embodiment, a slot 15 of the first cell 4 is disposed at a position opposite to the cell mounting hole 21 of the first insulating holder 1.

Specifically, the groove 15 of the first electric core 4 is designed to be used for placing the electric core 4 according to the size of the electric core 4; the first battery cells 4 are provided with slots 15 corresponding to the battery cell mounting holes 21 of the heat dissipation bracket 2 one by one, so that the ends of the battery cells 4 are conveniently fixed.

As shown in fig. 4, in an embodiment, a second slot 33 of the second battery cell 4 is disposed at a position opposite to the battery cell mounting hole 21 of the second insulating bracket 3.

Specifically, the slot position 33 of the second electric core 4 is designed to be used for placing the groove of the electric core 4 according to the size of the electric core 4; the second battery cells 4 are provided with slots 33 corresponding to the battery cell mounting holes 21 of the heat dissipation bracket 2 one by one, so that the ends of the battery cells 4 are conveniently fixed.

As shown in fig. 4-5, in an embodiment, the first cell 4 slot 15 and the second cell 4 slot each include a first mounting hole and a second mounting hole, where the first mounting hole is used for limiting the end of the housing of the cell 4, and the second mounting hole is used for limiting the positive electrode post 41 or the negative electrode post 42 of the cell.

Specifically, the slot 15 of the first electric core 4 includes a first mounting hole a151 and a second mounting hole a152, the first mounting hole a151 is used for limiting the end of the casing of the electric core 4, and the second mounting hole a152 is used for limiting the positive pole 41 or the negative pole 42 of the electric core; the first cell 4 slot 15 includes a first mounting hole b331 and a second mounting hole b332, the first mounting hole b331 is used for limiting the end of the cell 4 casing, and the second mounting hole b332 is used for limiting the cell positive electrode post 41 or the cell negative electrode post 42.

The assembly method of the application is that the second insulating bracket 3 and the heat dissipation bracket 2 are connected and assembled together through a connecting mechanism, and then the cylindrical battery cell 4 is placed in a battery cell mounting hole 21 of the heat dissipation bracket 2 according to the design requirement of the serial-parallel mode of the battery modules; then the first insulating bracket 1 is arranged on the heat dissipation bracket 2 provided with the battery cell 4 through a connecting mechanism; and finally, integrally fixing the battery module formed by the first insulating bracket 1, the heat dissipation bracket 2, the battery cell 4 and the second insulating bracket 3 together in a threaded connection manner through a screw rod 51 and a nut 52.

In one embodiment, the first insulating support 1 and the second insulating support 3 are made of plastic materials; the heat dissipation bracket 2 is made of aluminum.

In the application, the first insulating support 1 and the second insulating support 3 are made of insulating materials, the insulating materials are plastic materials, and the first insulating support 1 and the second insulating support 3 are integrally formed by injection molding of insulating plastic raw materials through an injection molding machine, so that a protective effect is provided for positive and negative insulation of the battery cell 4.

Further, the material of the heat dissipation bracket 2 includes aluminum or an alloy material of aluminum.

In a preferred embodiment, the material of the heat dissipation bracket 2 is selected from aluminum materials, and the heat dissipation bracket 2 is formed by extrusion molding of the aluminum materials into the battery cell bracket; the heat dissipation bracket has the functions of enhancing the structural strength and heat conduction, enhances the overall structural strength of the module, and can protect the battery cell 4 when the outside machinery collides with the battery pack; the problem of poor structural strength of the conventional battery pack can be effectively solved; the heat dissipation support can also enable the temperature of the battery module cell 4 to be conducted outwards along the aluminum block, so that the problem that the heat collection and heat dissipation performance of an existing battery pack is poor can be effectively solved, the effect of reinforcing the structural strength of the battery pack is achieved, and the heat collection and heat dissipation performance of the existing battery pack is improved.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (10)

1. The utility model provides a electricity mandrel group fixed knot constructs which characterized in that: including first insulating support, heat dissipation support and second insulating support, first insulating support with the second insulating support sets up respectively the both ends of heat dissipation support, the heat dissipation support is provided with a plurality of electric core mounting holes, electric core mounting hole intercommunication the both ends of heat dissipation support and be used for placing the electric core, first insulating support and/or the second insulating support with the heat dissipation support passes through coupling mechanism and connects.

2. The cell module securing structure according to claim 1, wherein: the connecting mechanism comprises: the first connecting mechanism, the second connecting mechanism and the third connecting mechanism;

the first insulating support and the heat dissipation support are connected through the first connecting mechanism;

The second insulating support and the heat dissipation support are connected through the second connecting mechanism;

the first insulating support, the heat dissipation support and the second insulating support are connected through the third connecting mechanism.

3. The cell module securing structure according to claim 2, wherein: the first connecting mechanism comprises a first limiting boss and a first limiting groove which are matched for use, the first limiting boss is arranged on one side, close to the heat dissipation support, of the first insulating support, and the first limiting groove is arranged on one side, close to the first insulating support, of the heat dissipation support.

4. The cell module securing structure according to claim 2, wherein: the second connecting mechanism comprises a second limiting boss and a second limiting groove which are matched for use, the second limiting boss is arranged on one side, close to the heat dissipation support, of the second insulating support, and the second limiting groove is arranged on one side, close to the second insulating support, of the heat dissipation support.

5. The cell module securing structure according to claim 2, wherein: the third coupling mechanism includes screw rod, screw rod mounting groove, screw rod mounting hole, nut mounting hole and nut, screw rod mounting groove intercommunication the both sides of first insulating support, screw rod mounting hole intercommunication the both ends of heat dissipation support, nut mounting hole intercommunication the both sides of second insulating support, screw rod mounting groove the screw rod mounting hole with the center pin coincidence of nut mounting hole, the screw rod passes in proper order the screw rod mounting groove the screw rod mounting hole with the nut mounting hole is in the nut mounting hole with nut threaded connection.

6. The cell module securing structure according to claim 1, wherein: the first insulating supports are provided with a plurality of first insulating supports, and the plurality of first insulating supports are connected through a fourth connecting mechanism.

7. The cell module securing structure according to claim 6, wherein: the fourth connecting mechanism comprises a third limiting boss and a third limiting groove which are matched for use, and the third limiting boss and the third limiting groove are respectively arranged on the side surfaces of two adjacent first insulating brackets, which are close to each other.

8. The cell module securing structure according to claim 1, wherein: a first battery cell slot is arranged at the position of the first insulating bracket opposite to the battery cell mounting hole; and a second battery cell slot is arranged at the position of the second insulating bracket opposite to the battery cell mounting hole.

9. The cell module securing structure according to claim 8, wherein: the first battery cell slot and the second battery cell slot comprise a first mounting hole and a second mounting hole, the first mounting hole is used for limiting the end part of the battery cell shell, and the second mounting hole is used for limiting the positive electrode post or the negative electrode post of the battery cell.

10. The cell module securing structure according to claim 1, wherein: the first insulating support and the second insulating support are made of plastic materials; the heat dissipation support is made of aluminum materials.