CN215342770U

CN215342770U - Battery module

Info

Publication number: CN215342770U
Application number: CN202120323956.0U
Authority: CN
Inventors: 邓桂超; 杨东方; 杨东亚
Original assignee: Shenzhen Taikewei Technology Co ltd
Current assignee: Shenzhen Taikewei Technology Co ltd
Priority date: 2021-02-04
Filing date: 2021-02-04
Publication date: 2021-12-28
Anticipated expiration: 2031-02-04

Abstract

A battery module comprises a battery module body, a protective shell and a plurality of radiating rods; the middle part of the battery pack is provided with a plurality of heat dissipation channels for installing heat dissipation rods; the protective shell comprises a shell and two cover bodies, wherein the shell is provided with an accommodating cavity for accommodating the battery pack, the accommodating cavity is provided with openings at two ends of the shell along the length direction of the shell, each cover body covers one opening of the shell, and a plurality of bases for fixing the radiating rods are formed by protruding one side of each cover body close to the shell; each heat dissipation rod is in a hollow column shape and is provided with a phase change material for heat dissipation, and two ends of each heat dissipation rod extend out of the corresponding heat dissipation channel and are respectively connected with one base of one cover body; the accommodating cavity is filled with heat-conducting glue which fills gaps around the battery pack and inner gaps of the battery pack. The battery module provided by the utility model has the advantages of stable and firm structure, good heat dissipation and strong universality, and solves the personalized requirements of different battery capacity vehicle types on the battery module.

Description

Battery module

[ technical field ] A method for producing a semiconductor device

The utility model relates to the field of lithium ion batteries, in particular to a battery module.

[ background of the utility model ]

With the strong support of the country on the field of new energy vehicles, new energy vehicles have entered a rapid development stage. As a basic unit of a power battery system of a new energy automobile, the structural design of a battery module directly determines the safety and reliability of the power battery system. However, the currently used battery modules have low versatility, and cannot be freely combined according to the battery capacity requirements of different electric vehicle types, and the fixing bracket of the battery module needs to be redesigned, which increases the manufacturing cost.

In view of the above, it is desirable to provide a novel battery module to overcome the disadvantages of the prior art.

[ Utility model ] content

The utility model aims to provide a battery module which is stable and firm in structure, good in heat dissipation performance and high in universality.

In order to achieve the above object, the present invention provides a battery module, which includes a battery module, a protective housing, and a plurality of heat dissipation rods; the middle part of the battery pack is provided with a plurality of heat dissipation channels for mounting the heat dissipation rods; the protective shell comprises a shell and two cover bodies, wherein the shell is provided with an accommodating cavity for accommodating the battery pack, the accommodating cavity is provided with openings at two ends of the shell along the length direction of the shell, each cover body covers one opening of the shell, and a plurality of bases for fixing the heat dissipation rods are formed by protruding one side of each cover body close to the shell; each heat dissipation rod is in a hollow column shape and is provided with a phase change material for heat dissipation, and two ends of each heat dissipation rod extend out of the corresponding heat dissipation channel and are respectively connected with one base of one cover body; the accommodating cavity is also filled with heat-conducting glue, and the heat-conducting glue fills gaps around the battery pack and inner gaps of the battery pack.

In a preferred embodiment, a plurality of guide bars arranged along the length direction of the housing are formed on the inner wall of the accommodating cavity in a protruding manner, and a plurality of guide grooves in one-to-one sliding fit with the guide bars are arranged on the outer side of the battery pack.

In a preferred embodiment, the height of the guide bar is greater than the depth of the guide groove, so that a gap is formed between the battery pack and the inner wall of the receiving cavity.

In a preferred embodiment, the cross sections of the guide strip and the guide groove are trapezoidal.

In a preferred embodiment, a plurality of top blocks arranged at intervals are further formed on the inner wall of the accommodating cavity in a protruding mode, and the top blocks are used for abutting against the outer surface of the battery pack.

In a preferred embodiment, the battery pack comprises a plurality of battery units which are adjacently arranged, each battery unit comprises two battery frames and a plurality of single batteries fixed between the two battery frames; a plurality of heat dissipation holes are formed in the battery rack and are located between the corresponding single batteries, and the heat dissipation holes in each battery unit are in one-to-one correspondence and are combined to form a heat dissipation channel; the outer side of the battery rack is also provided with grooves, and the grooves on each battery unit correspond to one another and are combined into the guide grooves.

In a preferred embodiment, the two battery frames of each battery unit have the same structure and are oppositely disposed at two ends of the corresponding single battery at intervals, a plurality of receiving slots for receiving one end of the single battery and arranged in a matrix are respectively recessed at one side of the two battery frames close to each other, and one heat dissipation hole is disposed between every two adjacent receiving slots.

In a preferred embodiment, the single battery is cylindrical, and the surface of the heat dissipation rod is provided with four arc-shaped heat absorption surfaces.

In a preferred embodiment, one side of each cover body close to the shell is concavely provided with a mounting groove matched with the shell, and the two cover bodies are respectively sleeved at two ends of the shell through the mounting grooves.

In a preferred embodiment, one side of one of the covers, which faces away from the housing, is provided with a positive terminal and a glue injection port for injecting the heat-conducting glue, and the other side of the other cover, which faces away from the housing, is provided with a negative terminal.

The battery module provided by the utility model has the advantages of stable and firm structure, good heat dissipation and strong universality, and solves the personalized requirements of different battery capacity vehicle types on the battery module.

[ description of the drawings ]

Fig. 1 is an exploded perspective view of a battery module according to the present invention.

Fig. 2 is an enlarged view of the area a shown in fig. 1.

Fig. 3 is a perspective view of the housing shown in fig. 2.

Fig. 4 is an exploded perspective view of the battery cell shown in fig. 1.

Fig. 5 is a schematic structural diagram of the positive electrode protection cover of the battery module shown in fig. 1.

[ detailed description ] embodiments

In order to make the objects, technical solutions and advantageous effects of the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model.

As shown in fig. 1 to 4, the present invention provides a battery module 100, which is mainly used for solving the problem of heat dissipation of a battery.

In an embodiment of the present invention, the battery module 100 includes a battery pack 10, a protective case 20 for accommodating the battery pack 10, and a plurality of heat dissipation rods 30.

Specifically, the middle part of the battery pack 10 is provided with a plurality of heat dissipation channels 101 for installing the heat dissipation rods 30; the protective case 20 is made of an aluminum alloy material and includes a case 21 and two cover bodies 22, the case 21 is provided with an accommodating cavity 211 for accommodating the battery pack 10, the accommodating cavity 211 opens both ends of the case 21 along a length direction of the case 21, each cover body 22 covers one opening of the case 21 for closing the accommodating cavity 211, and a plurality of bases 221 for fixing the heat dissipation rods 30 are formed at one side of each cover body 22 close to the case 21 in a protruding manner; each heat dissipation rod 30 is in a hollow column shape and is provided with a phase change material (not shown) for heat dissipation, and two ends of each heat dissipation rod 30 extend out of the corresponding heat dissipation channel 101 and are respectively connected with a base 221 of one cover 22, that is, the heat dissipation rods 30 are fixed between the two covers 22 through the bases 221, so that the bases 221 are also used for sealing two ends of the heat dissipation rods 30 to prevent the phase change material from leaking; the accommodating cavity 211 is further filled with a thermal conductive adhesive (not shown) for filling the gaps around the battery pack 10 and the inner gaps of the battery pack 10 and transferring heat, and the thermal conductive adhesive is injected into the accommodating cavity 211 after the accommodating cavity 211 is closed by the cover 22.

It can be understood, protective housing 20, radiating rod 30 and heat conduction glue all have radiating efficiency, it is specific, group battery 10 is at the during operation, the heat that its produced can be gathered at the middle part, radiating rod 30 can be the heat of the comparatively rapid absorption group battery 10 production this moment, make group battery 10 can not be because of heat gathering or produce the phenomenon that local temperature rise is too high, heat conduction glue then can the omnidirectional absorption group battery 10 produced heat and heat evenly give off, make group battery 10's temperature can be balanced, heat conduction glue also plays the heat transfer effect in order to reach protective housing 20 with the heat transfer that group battery 10 produced simultaneously, protective housing 20 carries out the heat exchange with outside air again in order to reach the purpose of cooling after that.

Further, in order to facilitate the battery pack 10 to be installed in the accommodating cavity 211, a plurality of guide bars 212 arranged along the length direction of the housing 21 are formed on the inner wall of the accommodating cavity 211 in a protruding manner, correspondingly, a plurality of guide grooves 102 in one-to-one sliding fit with the guide bars 212 are formed on the outer side of the battery pack 10, the battery pack 10 is installed in the accommodating cavity 211 through the sliding fit between the guide bars 212 and the guide grooves 102, and here, the height of the guide bars 212 is greater than the depth of the guide grooves 102, so that a gap is formed between the battery pack 10 and the inner wall of the accommodating cavity 211, and thus, when the battery pack 10 is installed, the friction force between the battery pack 10 and the inner wall of the accommodating cavity 211 can be reduced, which is beneficial to improving the installation efficiency. In the present embodiment, the cross-sections of the guide bars 212 and the guide grooves 102 are trapezoidal.

Preferably, a plurality of top blocks 213 are formed on the inner wall of the receiving cavity 211 in a protruding manner, and the top blocks 213 are used for abutting against the outer surface of the battery pack 10, so that the battery pack 10 can be more stably fixed in the receiving cavity 211.

Further, the battery pack 10 includes a plurality of battery units 11 arranged adjacently, each battery unit 11 includes two battery racks 12 and a plurality of single batteries 13 fixed between the two battery racks 12, a plurality of heat dissipation holes 121 are opened on the battery racks 12, the heat dissipation holes 121 are located between the corresponding single batteries 13, and the heat dissipation holes 121 on each battery unit 11 are in one-to-one correspondence and are combined into a heat dissipation channel 101 for installing the heat dissipation rod 30. The outer side of the battery rack 12 is further provided with a groove 122, and the grooves 122 on each battery unit 11 are in one-to-one correspondence and combined into a guide groove 102 for matching with the guide bar 212.

In the present embodiment, the battery cell 13 has a cylindrical shape, the battery holder 12 has a rectangular parallelepiped shape, and the two battery holders 12 have the same structure and are disposed at opposite ends of the battery cell 13 with an interval therebetween. Specifically, a plurality of receiving slots 123 for receiving one end of the battery cell 13 and arranged in a matrix are respectively recessed at one side of each of the two battery frames 12 close to each other, and a heat dissipation hole 121 is disposed between two or four adjacent receiving slots 123, where it should be noted that the number of heat dissipation holes 121 of each battery frame 12 is greater than the number of heat dissipation rods 30, that is, the number of heat dissipation channels 101 is also greater than the number of heat dissipation rods 30.

Preferably, the heat dissipation holes 121 are provided with arc-shaped edges coaxially disposed with the corresponding receiving slots 123, that is, a part of the heat dissipation holes 121 are provided with two arc-shaped edges, another part of the heat dissipation holes 121 are provided with four arc-shaped edges, and the heat dissipation holes 121 located in the middle of the battery rack are all provided with four arc-shaped edges. Correspondingly, the shape of the heat dissipation rod 30 is consistent with the shape of the heat dissipation hole 121, that is, the surface of the heat dissipation rod 30 is provided with four arc-shaped heat absorption surfaces 301 corresponding to the four arc-shaped edges of the heat dissipation hole 121, and meanwhile, the four heat absorption surfaces 301 are in arc transition for facilitating the production and holding of the heat dissipation rod 30.

In this embodiment, the battery pack 10 further includes four screws 14 with nuts 15 at two ends, the battery holder 12 is substantially rectangular, four corner positions of the battery holder 12 are respectively provided with a fixing hole 124 for the screw 14 to pass through, and the screw 14 passes through the fixing hole 124 on the battery pack 10 and then presses two ends of the battery pack 10 through the nuts 15, thereby fixing the plurality of battery units 11.

It can be understood that the assembled protective housing 20 is in a rectangular parallelepiped shape, which is not only beautiful, but also beneficial for production and manufacturing, and meanwhile, the size of the accommodating cavity 211 can be adjusted by a user according to the requirement to accommodate the battery pack 10 with the corresponding specification, so that the user can provide personalized requirements according to actual requirements.

Furthermore, one side of each cover 22 close to the casing 21 is concavely provided with a mounting groove 222 matched with the casing 21, two covers 22 are sleeved at two ends of the casing 21 through the mounting grooves 222, and a thermosetting sealant (not shown) is arranged between the inner wall of the mounting groove 222 and the casing 21, so as to improve the sealing performance of the protective casing 20. One side of one of the covers 22 away from the case 21 is provided with a positive terminal 223, and one side of the other cover 22 away from the case 21 is provided with a negative terminal (not shown), that is, the positive terminal 223 and the negative terminal are positive and negative electrodes of the battery module 100, although the positive terminal 223 and the negative terminal may also be provided on one cover 22, which is not limited herein.

Preferably, one of the covers 22 is further provided with a glue injection port 224 for injecting the heat-conducting glue. Specifically, the heat-conducting glue is heat-conducting silica gel, and the heat-conducting glue is injected into the accommodating cavity 211 of the protective shell 20 from the glue injection port 224 and is filled in the gap between the accommodating cavity 211 and the battery pack 10 and the inner gap of the battery pack 10, so that it can be understood that the heat-conducting glue can be used for fixing the battery pack 10 again after being solidified, and the structure of the battery module 100 is more stable.

When the battery module 100 according to the present invention is assembled,

first, both ends of the unit cell 13 are placed in the receiving grooves 123 of the two cell holders 12 which are oppositely disposed at intervals, and the battery pack 10 is fixed together by screws passing through the mounting holes 133.

Then, the battery pack 10 is accommodated in the accommodating cavity 211 of the protective case 20 by the cooperation of the guide bar 212 and the guide groove 102, and the battery pack 10 is fixed in the protective case 20.

Then, the heat dissipation bar 30 is connected to one cover 22 and then inserted into the heat dissipation channel 101 of the battery pack 10 until the cover 22 is fitted on the housing 21, and then another cover 22 is fitted on the housing 21, so that the heat dissipation bar 30 is fixed between the two covers 22, and the two ends of the housing 21 are coated with sealant before the cover 22 is connected to the housing 21.

Finally, the heat-conducting glue is injected into the accommodating cavity 211 of the protective shell 20 from the glue injection port 224, the injection is stopped after the heat-conducting glue is filled, and the assembly of the battery module 100 is completed after the heat-conducting glue is solidified.

In conclusion, the battery module provided by the utility model has the advantages of stable and firm structure, good heat dissipation and strong universality, and solves the personalized requirements of different battery capacity vehicle types on the battery module.

The utility model is not limited solely to that described in the specification and embodiments, and additional advantages and modifications will readily occur to those skilled in the art, so that the utility model is not limited to the specific details, representative apparatus, and illustrative examples shown and described herein, without departing from the spirit and scope of the general concept as defined by the appended claims and their equivalents.

Claims

1. A battery module, its characterized in that: the battery pack comprises a battery pack module, a protective shell and a plurality of radiating rods; the middle part of the battery pack is provided with a plurality of heat dissipation channels for mounting the heat dissipation rods; the protective shell comprises a shell and two cover bodies, wherein the shell is provided with an accommodating cavity for accommodating the battery pack, the accommodating cavity is provided with openings at two ends of the shell along the length direction of the shell, each cover body covers one opening of the shell, and a plurality of bases for fixing the heat dissipation rods are formed by protruding one side of each cover body close to the shell; each heat dissipation rod is in a hollow column shape and is provided with a phase change material for heat dissipation, and two ends of each heat dissipation rod extend out of the corresponding heat dissipation channel and are respectively connected with one base of one cover body; the accommodating cavity is also filled with heat-conducting glue, and the heat-conducting glue fills gaps around the battery pack and inner gaps of the battery pack.

2. The battery module according to claim 1, wherein: the battery pack is characterized in that a plurality of guide strips arranged along the length direction of the shell are formed on the inner wall of the accommodating cavity in a protruding mode, and a plurality of guide grooves in one-to-one sliding fit with the guide strips are formed in the outer side of the battery pack.

3. The battery module according to claim 2, wherein: the height of the guide strip is greater than the depth of the guide groove, so that a gap is formed between the battery pack and the inner wall of the accommodating cavity.

4. The battery module according to claim 3, wherein: the cross sections of the guide strip and the guide groove are trapezoidal.

5. The battery module according to claim 2, wherein: the inner wall of the accommodating cavity is further protruded to form a plurality of top blocks arranged at intervals, and the top blocks are used for being abutted to the outer surface of the battery pack.

6. The battery module according to claim 2, wherein: the battery pack comprises a plurality of battery units which are adjacently arranged, and each battery unit comprises two battery frames and a plurality of single batteries fixed between the two battery frames; a plurality of heat dissipation holes are formed in the battery rack and are located between the corresponding single batteries, and the heat dissipation holes in each battery unit are in one-to-one correspondence and are combined to form a heat dissipation channel; the outer side of the battery rack is also provided with grooves, and the grooves on each battery unit correspond to one another and are combined into the guide grooves.

7. The battery module according to claim 6, wherein: the two battery racks of each battery unit are identical in structure and are oppositely placed at two ends of the corresponding single battery at intervals, a plurality of accommodating grooves which are used for accommodating one end of each single battery and are arranged in a matrix are respectively concavely arranged on one side, close to each other, of each battery rack, and one heat dissipation hole is formed between every two adjacent accommodating grooves.

8. The battery module according to claim 7, wherein: the single battery is cylindrical, and four arc-shaped heat absorption surfaces are arranged on the surface of the heat dissipation rod.

9. The battery module according to claim 1, wherein: each cover body is close to one side of the shell body, a mounting groove matched with the shell body is concavely arranged on one side of each cover body, and the two cover bodies are respectively sleeved at the two ends of the shell body through the mounting grooves.

10. The battery module according to claim 8, wherein: one side of one of the cover bodies, which deviates from the shell, is provided with a positive terminal and a glue injection port for injecting the heat-conducting glue, and the other side of the other cover body, which deviates from the shell, is provided with a negative terminal.