CN209496908U - Casing assembly and battery modules for battery modules - Google Patents

Abstract

This application provides a kind of casing assemblies and battery modules for battery modules.The casing assembly includes: module casing；Output electrode, output electrode is from outside module casing internal stretch to module casing；Insulator, from outside module casing internal stretch to module casing, output electrode part is embedded in the insulator insulator；First seal is set between output electrode and insulator；And second seal, it is set between insulator and module casing.In the application, first seal is set between output electrode and insulator to block the gap between output electrode and insulator, second seal is set between insulator and module casing to block the gap between insulator and module casing, steam can be effectively prevent to penetrate into battery modules, electrolyte vapors can be effectively prevent to penetrate into outside battery modules to travel in air, influence user's health.

Description

Casing assembly and battery modules for battery modules

[technical field]

This application involves battery technology field more particularly to a kind of casing assemblies and battery modules for battery modules.

[background technique]

Battery modules include shell, battery and output electrode.Battery receiving is set in shell.Output electrode one end and electricity Pond electrical connection, the other end, which needs to stretch out, realizes electricity output outside shell.The lower material of steam permeability, such as shell can be used in shell Body can be made of materials such as aluminium or magnesium.It is isolated between shell and output electrode and is provided with insulator.Insulator is by output electrode Setting is thoroughly isolated with shell, insulation performance is good.

Shell needs to do sealed set, to prevent steam from penetrating into battery modules, leads to the insulation for reducing battery modules Pressure-resistant performance；It is traveled in air with the electrolyte vapors for preventing battery leakage from generating, causes to influence user's health.

However, shell is made from insulator of the different material of thermal expansion coefficient, output electrode and insulator are by thermally expanding The different material of coefficient is made.When battery modules are by temperature shock or foreign impacts power, between shell and insulator easily There is gap, easily occurs gap between output electrode and insulator, lead to seal failure.

[utility model content]

In view of this, the embodiment of the present application provides a kind of casing assembly and battery modules for battery modules, favorably In the sealing performance of enhancing module casing.

In a first aspect, providing a kind of casing assembly for battery modules.This is used for the casing assembly packet of battery modules It includes:

Module casing；

Output electrode, the output electrode is from outside the module casing internal stretch to the module casing；

Insulator, the insulator is from outside the module casing internal stretch to the module casing, the output electricity Pole part is embedded in the insulator；

First seal is set between the output electrode and the insulator；And

Second seal is set between the insulator and the module casing.

Optionally, the output electrode includes sequentially connected first electrode portion, second electrode portion and third electrode portion, institute It states second electrode portion and connects the first electrode portion and the third electrode portion；

The second electrode portion is embedded in the insulator, and the first electrode portion exposes to the insulator and is located at Inside the module casing, the third electrode portion exposes to the insulator and is located at outside the module casing；

The first seal is arranged around the output electrode, and the first seal is fixedly connected on the output electricity Pole and/or the insulator.

Optionally, the first groove is provided in the output electrode, first groove is arranged around the output electrode；

The first seal is installed on first groove.

Optionally, the second seal is arranged around the insulator, and the second seal is fixedly connected on described Module casing and/or the insulator.

Optionally, the insulator includes sequentially connected first insulation division, the second insulation division and third insulation division；

Second insulation division connects first insulation division and the third insulation division；

Second insulation division is embedded in the shell wall of the module casing；

First insulation division is located inside the module casing；

The third insulation division is located at outside the module casing, and with the module casing surface contiguous；

The second seal be set to second insulation division and/or the third insulation division and the module casing it Between.

Optionally, the third insulation division is provided with the second groove towards the surface of the module casing；

The second seal is installed on second groove.

Optionally, the module casing includes storage shell and upper cover；

Shell wall of the output electrode through the storage shell；

The upper cover is sealedly connected on the storage shell.

Optionally, the output electrode is metallic conduction piece；

The output electrode is set approximately to "the" shape.

Optionally, the insulator is insulated plastic；

The insulated plastic injection molding is between the output electrode and the module casing.

Second aspect provides a kind of battery modules.The battery modules include:

Above-mentioned casing assembly；And

Battery, multiple battery receivings are mounted in the module casing, and are electrically connected with the output electrode.

In casing assembly and battery modules provided by the embodiments of the present application for battery modules, first seal is set to To block the gap between output electrode and insulator between output electrode and insulator, second seal be set to insulator with To block the gap between insulator and module casing between module casing, steam can be effectively prevent to penetrate into battery modules, Electrolyte vapors can be effectively prevent to penetrate into outside battery modules to travel in air, influence user's health.

[Detailed description of the invention]

Technical solution in ord to more clearly illustrate embodiments of the present application, below will be to needed in the embodiment attached Figure is briefly described, it should be apparent that, the drawings in the following description are only some examples of the present application, for this field For those of ordinary skill, without creative efforts, it can also be obtained according to these attached drawings other attached drawings.

Fig. 1 is the structural schematic diagram for the battery modules that a kind of embodiment of the application provides.

Fig. 2 is the top view of the casing assembly in Fig. 1 battery modules.

Fig. 3 is the cross-sectional view in the direction A-A along Fig. 2.

Fig. 4 is the part explosive view of Fig. 3 casing assembly.

Fig. 5 is the scheme of installation of the output electrode and first seal in Fig. 3 casing assembly.

Fig. 6 is the structural schematic diagram of the output electrode in Fig. 3 casing assembly.

Fig. 7 is the structural schematic diagram of the insulator in Fig. 3 casing assembly.

Fig. 8 is the top view of Fig. 7 insulator.

Fig. 9 is the cross-sectional view in the direction B-B along Fig. 8.

Figure 10 is the scheme of installation of the module casing and second seal in Fig. 3 casing assembly.Description of symbols:

1- battery modules；

10- casing assembly；

100- lower case；

The inner cavity 1000-；

1001- through-hole；

101- upper cover；

102- output electrode；

1020- first electrode portion；

1021- second electrode portion；

1022- third electrode portion；

The first groove of 1023-；

103- first seal；

104- insulator；

The first insulation division of 1040-；

The second insulation division of 1041-；

1042- third insulation division；

The second groove of 1043-；

1044- accommodation groove；

105- second seal.

[specific embodiment]

In order to better understand the technical solution of the application, the embodiment of the present application is retouched in detail with reference to the accompanying drawing It states.

It will be appreciated that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.Base Embodiment in the application, it is obtained by those of ordinary skill in the art without making creative efforts it is all its Its embodiment, shall fall in the protection scope of this application.

The term used in the embodiment of the present application is only to be not intended to be limiting merely for for the purpose of describing particular embodiments The application.In the embodiment of the present application and the "an" of singular used in the attached claims, " described " and "the" It is also intended to including most forms, unless the context clearly indicates other meaning.

It should be appreciated that term "and/or" used herein is only a kind of incidence relation for describing affiliated partner, indicate There may be three kinds of relationships, for example, A and/or B, can indicate: individualism A, exist simultaneously A and B, individualism B these three Situation.In addition, character "/" herein, typicallys represent the relationship that forward-backward correlation object is a kind of "or".

It should be appreciated that unless otherwise indicated, the meaning of " plurality " is more than two (including two)；Term " first ", " the Two ", " third " etc. is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance and assemble sequence.

Unless otherwise clearly defined and limited, term " installation ", " connected ", " connection " shall be understood in a broad sense, for example, can To be to be fixedly connected, may be a detachable connection, or be integrally connected；It can be directly connected, intermediate matchmaker can also be passed through Jie is indirectly connected.For the ordinary skill in the art, visual concrete condition understands above-mentioned term in this application Concrete meaning.

According to one embodiment of the application, a kind of battery modules are provided.It please refers to Fig.1 to Fig.3, the battery modules 1 Including battery and casing assembly 10.Casing assembly 10 includes module casing, output electrode 102, insulator 104, first seal 103 and second seal 105.Module casing is arranged for accommodating battery.Multiple battery receivings are mounted on inside module casing.

Output electrode 102 is made by the high material of conductivity.Output electrode 102 is from module casing internal stretch to mould Group hull outside.One end of output electrode 102 is located inside module casing and is electrically connected with multiple batteries, and the other end extends to mould Group hull outside is to realize electricity output or electricity input.

Insulator 104 is from outside module casing internal stretch to module casing.102 part-structure of output electrode is embedded exhausted In edge body 104.Insulator 104 is correspondingly arranged on the accommodation groove 1044 for accommodating portion output electrode 102.Insulator 104 by The high material of insulation performance is made, for output electrode 102 and the module casing of being electrically insulated.

First seal 103 be arranged between output electrode 102 and insulator 104, for block output electrode 102 and absolutely The first gap between edge body 104.Second seal 105 is set between insulator 104 and module casing, for blocking absolutely The second gap between edge body 104 and module casing.

By setting first seal 103 and second seal 105, the sealing performance of module casing is enhanced, it can be effective It prevents external moisture from penetrating into inside battery modules 1 by the first gap or the second gap, can effectively prevent in battery modules 1 Electrolyte vapors are traveled in outside air by the first gap or the second gap, influence user's health.

In order to more absolutely prove the specific structure of battery modules 1 in the embodiment of the present application, battery modules 1 are carried out below It further explains.

The specific structure of module casing is able to satisfy receiving installation battery and is able to achieve sealing.Optionally, figure is please referred to 4, module casing may include lower case 100 and upper cover 101.Lower case 100 is the inner cavity 1000 for being provided with side and having opening.It is defeated Electrode 102 is arranged through the shell wall of lower case 100 out.It is provided on the shell wall of lower case 100 and passes through for output electrode 102 Through-hole 1001.Multiple batteries accommodate the inner cavity 1000 for being installed on lower case 100, and are electrically connected with output electrode 102.Upper cover 101 It is sealedly connected in lower case 100, for blocking the opening of lower case 100.

Lower case 100 can be made of the low material of steam permeability.For example, the material of lower case 100 can be metal material Material, such as aluminium or magnesium etc..In another example the nonmetallic materials system that the material of lower case 100 can also make other steam permeabilities low At.

Upper cover 101 can be made of the low material of steam permeability.For example, the material of upper cover 101 can be metal material, example Such as aluminium or magnesium.In another example the material of upper cover 101 can also be that the low nonmetallic materials of other steam permeabilities are made.

According to the specific material of lower case 100 and upper cover 101, upper cover 101 is sealedly connected on specific in lower case 100 Structure can be specifically arranged as needed.For example, with lower case 100 modes such as gluing, welding or hot pressing to can be used close for upper cover 101 Envelope connection.

Output electrode 102 is made by the high material of conductivity, is able to achieve and is conducted.The knot of output electrode 102 Structure can select to be arranged as needed.In a kind of optional example, Fig. 3 and Fig. 5 are please referred to, output electrode 102 is metallic conduction piece, defeated Electrode 102 can be set approximately to "the" shape structure out.For example, the material of output electrode 102 may include copper or aluminium etc.." it " The output electrode 102 of font can be securely embedded in insulator 104, and can be from outside module casing internal stretch to module casing Portion is to realize electrical connection.In addition, in other examples, output electrode 102 can be configured as slab construction or other shapes.

Insulator 104 is made of insulating material, and is able to achieve electric insulation functions.Optionally, Fig. 3 and Fig. 4 are please referred to, absolutely Insulated plastic can be set into edge body 104.Insulated plastic can injection molding between output electrode 102 and lower case 100.

Output electrode 102 is different from the production material of insulator 104, and the two has different thermal expansion coefficients.Lower case 100 is different from the production material of insulator 104, and the two has different thermal expansion coefficients.Meeting when in 1 course of work of battery modules Generate heat, output electrode 102, insulator 104 and lower case 100 generate different dilatancy amounts, cause the first gap and The generation in the second gap or its size generate variation, first seal 103 can flexible deformation to block the first gap always, the Two sealing elements, 105 energy flexible deformation so that block the second gap always.

Fig. 3 and Fig. 5 are please referred to, output electrode 102 may include sequentially connected first electrode portion 1020, second electrode portion 1021 and third electrode portion 1022.First electrode portion 1020 and third electrode portion 1022 are located at the both ends of output electrode 102. Second electrode portion 1021 connects first electrode portion 1020 and the third electrode portion 1022.Second electrode portion 1021 is embedded described In insulator 104.First electrode portion 1020 exposes to the insulator 104, and is located inside module casing.Third electrode portion 1022 expose to insulator 104, and are located at outside module casing.

First seal 103 can be arranged around output electrode 102.First seal 103 is fixedly connected on output electrode 102 And/or insulator 104.For example, first seal 103 may be configured as sealing ring, and pass through the connection such as coupling agent or bonding agent In output electrode 102 and/or insulator 104.

For the installation site for positioning first seal 103, in the present embodiment, referring to Fig. 6, can in output electrode 102 It is provided with the first groove 1023, the first groove 1023 is arranged around output electrode 102.It is recessed that first seal 103 is installed on first In slot 1023.First groove 1023 can be arranged around second electrode portion 1021.

First seal 103 is elastically compressed between output electrode 102 and insulator 104.The one of first seal 103 Side surface compresses output electrode 102, another side surface compresses insulator 104.The elastic deformation amount of first seal 103 can basis It needs to select to set.Certainly, the first groove has been may also set up on insulator 104.

Fig. 3 and Fig. 4 are please referred to, second seal 105 can be arranged around insulator 104.Second seal 105 is fixed to be connected It is connected to lower case 100 and/or insulator 104.Such as shown in Figure 10, second seal 105 can be set to sealing ring, and pass through idol Connection agent or bonding agent etc. are connected in lower case 100.

In the present embodiment, Fig. 3, Fig. 7 are please referred to Fig. 9, insulator 104 includes being sequentially connected the first insulation division connect 1040, the second insulation division 1041 and third insulation division 1042.First insulation division 1040 and third insulation division 1042 are located at absolutely Two ends of edge body 104.Second insulation division 1041 connects the first insulation division 1040 and third insulation division 1042.Second insulation Portion 1041 is embedded in the shell wall of lower case 100.First insulation division 1040 is located inside module casing.For example, first seal 103 may be provided between output electrode 102 and the first insulation division 1040.Third insulation division 1042 is located at outside module casing, and 1042 surface of third insulation division is provided adjacent to lower case 100.

Second seal 105 is arranged between the second insulation division 1041 and/or third insulation division 1042 and lower case 100. For example, second seal 105 may be provided between the second insulation division 1041 and lower case 100.In another example second seal 105 It may be provided between third insulation division 1042 and lower case 100.For another example second seal 105 can be arranged in second absolutely simultaneously Between edge 1041 and lower case 100 and between third insulation division 1042 and lower case 100.

It is highly preferred that as shown, third insulation division 1042 is provided with the second groove towards the surface of lower case 100 1043.Second groove 1043 is arranged around the first insulation division 1040.Second seal 3 is installed on second groove 1043.

Second seal 105 is elastically compressed between insulator 104 and lower case 100.The side of second seal 105 Surface compresses insulator 104, another side surface compresses lower case 100.The elastic deformation amount of second seal 105 can be according to need It specifically to set.

The material of first seal 103 and second seal 105 can select to be arranged as needed, optionally, the first sealing 103 material of part may include one or more of ethylene propylene diene rubber, fluorubber or silicon rubber.105 material of second seal It may include one or more of ethylene propylene diene rubber, fluorubber or silicon rubber.

In a kind of specific embodiment, as shown, production molding output electrode 102, fixed by first seal 103 It is connected in output electrode 102.Production molding lower case 100, second seal 105 is fixedly connected in lower case 100.

Output electrode 102 and the positioning of lower case 100 are placed in a mold.Between lower case 100 and output electrode 102 Injection molding insulator 104 makes 103 elastic compression of first seal in output electrode by plastic cement dwell pressure compression seal Between 102 and insulator 104,105 elastic compression of second seal is between insulator 104 and lower case 100.

Battery receiving is installed in lower case 100, and is electrically connected with output electrode 102.Upper cover 101 is sealedly connected on In lower case 100, and the opening of lower case 100 is blocked, assembled formation battery modules 1.

The foregoing is merely the preferred embodiments of the application, not to limit the application, all essences in the application Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the application protection.

Claims (10)

1. a kind of casing assembly (10) for battery modules characterized by comprising

Module casing (100,101)；

Output electrode (102), the output electrode (102) is from the module casing (100,101) internal stretch to the mould group Shell (100,101) is external；

Insulator (104), the insulator (104) is from the module casing (100,101) internal stretch to the module casing (100,101) external, the output electrode (102) is partially embedded in the insulator (104)；

First seal (103) is set between the output electrode (102) and the insulator (104)；And

Second seal (105) is set between the insulator (104) and the module casing (100,101).

2. casing assembly (10) according to claim 1, it is characterised in that:

The output electrode (102) includes sequentially connected first electrode portion (1020), second electrode portion (1021) and third electricity Pole portion (1022), the second electrode portion (1021) connect the first electrode portion (1020) and the third electrode portion (1022)；

The second electrode portion (1021) is embedded in the insulator (104), and the first electrode portion (1020) exposes to institute It states insulator (104) and is located at the module casing (100,101) inside, the third electrode portion (1022) exposes to described exhausted Edge body (104) and to be located at the module casing (100,101) external；

The first seal (103) is arranged around the output electrode (102), and the first seal (103) is fixedly connected In the output electrode (102) and/or the insulator (104).

3. casing assembly (10) according to claim 2, it is characterised in that:

It is provided with the first groove (1023) on the output electrode (102), first groove (1023) is around the output electricity Pole (102) setting；

The first seal (103) is installed on first groove (1023).

4. casing assembly (10) according to claim 1, it is characterised in that:

The second seal (105) is arranged around the insulator (104), and the second seal (105) is fixedly connected on The module casing (100,101) and/or the insulator (104).

5. casing assembly (10) according to claim 1 or 4, it is characterised in that:

The insulator (104) includes sequentially connected first insulation division (1040), the second insulation division (1041) and third insulation Portion (1042)；

Second insulation division (1041) connects first insulation division (1040) and the third insulation division (1042)；

Second insulation division (1041) is embedded in the shell wall of the module casing (100,101)；

It is internal that first insulation division (1040) is located at the module casing (100,101)；

It is external that the third insulation division (1042) is located at the module casing (100,101), and with the module casing (100, 101) surface contiguous；

The second seal (105) be set to second insulation division (1041) and/or the third insulation division (1042) with Between the module casing (100,101).

6. casing assembly (10) according to claim 5, it is characterised in that:

The third insulation division (1042) is provided with the second groove (1043) towards the surface of the module casing (100,101)；

The second seal (105) is installed on second groove (1043).

7. casing assembly (10) according to claim 1, it is characterised in that:

The module casing (100,101) includes lower case (100) and upper cover (101)；

The output electrode (102) runs through the shell wall of the lower case (100)；

The upper cover (101) is sealedly connected on the lower case (100).

8. casing assembly (10) according to claim 1, it is characterised in that:

The output electrode (102) is metallic conduction piece；

The output electrode (102) is set approximately to "the" shape.

9. casing assembly (10) according to claim 1, it is characterised in that:

The insulator (104) is insulated plastic；

The insulated plastic injection molding is between the output electrode (102) and the module casing (100,101).

10. a kind of battery modules (1) characterized by comprising

Casing assembly (10) according to claim 1 to 9；And

Battery, multiple batteries receivings are mounted in the module casing (100,101), and with the output electrode (102) Electrical connection.