CN207398217U

CN207398217U - Battery modules

Info

Publication number: CN207398217U
Application number: CN201721216314.0U
Authority: CN
Inventors: 李建伟; 杨明平; 郑松太; 产利兵
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2017-09-21
Filing date: 2017-09-21
Publication date: 2018-05-22
Anticipated expiration: 2027-09-21

Abstract

The utility model provides a kind of battery modules, including：Babinet is provided with through hole；And FPC.Wherein, FPC has extension, and extension is stretched out via the through hole on babinet outside babinet.Battery modules further include：Seal assembly is arranged between the extension of FPC and the through hole of babinet and seals FPC and through hole.In battery modules according to the present utility model, seal assembly is provided between the extension of FPC and the through hole of babinet, seal assembly is tightly connected the extension of FPC and the through hole of babinet, so as to improve the air-tightness of battery modules.In addition, the structure of the battery modules of the utility model is simple, at low cost, practicability is high, connector can be freely designed on request after FPC is installed on babinet.

Description

Battery modules

Technical field

The utility model is related to battery technology field more particularly to a kind of battery modules.

Background technology

At present, usually require to carry out low pressure sampling to the battery of battery modules in battery modules.It is well known that battery mould The low pressure sampling system of group is typically with flexible printed circuit board (Flexible Printed Circuits Board, abbreviation For FPC) it is sampled, FPC needs the through hole through babinet wall surface in order to be electrically connected with external device (ED) (such as battery management system) It connects, but battery modules on the market do not do encapsulation process, therefore the gas of battery modules between FPC and the through hole of babinet at present Close property is poor.

Utility model content

In view of problem present in background technology, the purpose of this utility model is to provide a kind of battery modules, FPC and It is sealed to improve the air-tightness of battery modules between the through hole of babinet.

To achieve these goals, the utility model provides a kind of battery modules, including：Babinet is provided with through hole； And FPC.Wherein, FPC has extension, and extension is stretched out via the through hole on babinet outside babinet.Battery modules further include：It is close Sealing assembly is arranged between the extension of FPC and the through hole of babinet and seals FPC and through hole.

The beneficial effects of the utility model are as follows：

In battery modules according to the present utility model, sealing group is provided between the extension of FPC and the through hole of babinet Part, seal assembly is tightly connected the extension of FPC and the through hole of babinet, so as to improve the air-tightness of battery modules.In addition, this The structures of the battery modules of utility model is simple, at low cost, practicability is high, after FPC is installed on babinet can on request from By design connector.

Description of the drawings

Fig. 1 is the general assembly drawing of battery modules according to the present utility model.

Fig. 2 is Fig. 1 simplification figures, only illustrates the assembly relation of babinet, the extension of FPC and seal assembly.

Fig. 3 is the exploded view of Fig. 2.

Fig. 4 is the enlarged drawing of the encircled portion in Fig. 2.

Fig. 5 is along the partial perspective view after the line A-A cutting in Fig. 4.

Fig. 6 is the exploded view of Fig. 4, wherein for the sake of clarity, eliminating babinet.

Fig. 7 is the further exploded view of Fig. 6.

Fig. 8 is the stereogram of one of halfbody of housing.

Fig. 9 is the stereogram of one of split of sealing element.

Figure 10 is the stereogram after the split assembling of a halfbody and sealing element for housing.

Figure 11 is along the partial perspective view after the line B-B cutting in Figure 10.

Figure 12 is the exploded view of Figure 11.

Figure 13 is the stereogram of one of battery in Fig. 1.

Wherein, the reference numerals are as follows：

1 babinet, 321 split

11 through hole, 3211 outside portion

3212 inside portions of 2FPC

21 main part, 3213 link block

22 extension, 33 fixing piece

3 seal assembly, 4 battery

31 housing, 41 coping plate

311 halfbody, 42 electrode terminal

3111 recess portion, 43 shell

3112 5 electric connecting sheets of perforation

3113 stopper section, 6 pad

3114 first protrusion, 7 connector

3115 first groove channel Ss

3116 second the first engaging members of protrusion T1

3117 second the second engaging members of groove T2

32 sealing elements

Specific embodiment

It is described in detail battery modules according to the present utility model with reference to the accompanying drawings.

Referring to figs. 1 to Figure 13, battery modules according to the present utility model include：Babinet 1 is provided with through hole 11；And FPC 2.Wherein, FPC 2 has extension 22, and extension 22 is stretched out via the through hole 11 on babinet 1 outside babinet 1.Battery modules are also wrapped It includes：Seal assembly 3 is arranged between the extension 22 of FPC 2 and the through hole 11 of babinet 1 and seals FPC 2 and through hole 11.

In battery modules according to the present utility model, set between the extension 22 of FPC 2 and the through hole 11 of babinet 1 There is seal assembly 3, seal assembly 3 is tightly connected the extension 22 of FPC 2 and the through hole 11 of babinet 1, so as to improve battery mould The air-tightness of group.In addition, the structure of the battery modules of the utility model is simple, at low cost, practicability is high, when FPC 2 is installed to Connector can be freely designed after on babinet 1 on request.

Circuit is equipped in FPC 2.With reference to Fig. 1, battery modules may also include：Multiple batteries 4, are contained in babinet 1, each electricity Pond 4 is electrically connected to the circuit set in FPC 2.

With reference to Figure 13, each battery 4 includes：Coping plate 41；Two electrode terminals 42, are fixed on coping plate 41；And shell 43, it is assemblied in coping plate 41.Can also have with reference to Fig. 1, FPC 2：Main part 21, positioned at two electrode terminals of all batteries 4 The top of position between 42.One end of wherein extension 22 is connected to main part 21 and the other end is via the through hole on babinet 1 11 stretch out outside babinet 1.Seal assembly 3 is tightly connected the extension 22 of FPC 2 and the through hole 11 of babinet 1, and stretches out outside babinet 1 The extension 22 of FPC 2 is used to be electrically connected to external device (ED) (such as battery management system).

Remark additionally herein, in order to reduce the overall weight of battery modules, each battery 4 in battery modules it is outer Shell 43 can be used plastics and be made.But in order to ensure the performance and service life of each battery 4, the battery 4 being made of plastics The battery modules formed are higher to the air-tightness requirement of itself, thus the gas of battery modules can be improved by seal assembly 3 Close property.

With reference to Fig. 1, battery modules may also include：Multiple electric connecting sheets 5, each electrode terminal 42 of each battery 4 are electrically connected to A corresponding electric connecting sheet 5；Multiple pads 6 are fixed on the main part 21 of FPC 2；And multiple connectors 7, each connector 7 are solid Surely a pad 6 and a corresponding electric connecting sheet 5 are connected.Wherein, the correspondence of electric connecting sheet 5 and electrode terminal 42 can be with For：One electric connecting sheet 5 is only electrically connected (i.e. one electric connecting sheet of exclusive use of electrode terminal 42 with an electrode terminal 42 5)), for use as the output of battery modules, an electric connecting sheet 5 is electrically connected (i.e. adjacent electrode terminals 42 with adjacent electrode terminals 42 Share an electric connecting sheet 5), to realize the connection in series-parallel between adjacent cell 4.

Here, the both ends of each connector 7 can be bonded one pad 6 of connection and a corresponding electric connecting sheet 5 respectively.Each conduction Connector 7 can be metal tape or wire.Preferably, each conducting connecting part 7 is aluminium strip or aluminium wire.Wherein, battery management system, FPC 2, pad 6 and connector 7 form the low pressure sampling system of battery modules together, and low pressure sampling system passes through with being connected to The electric connecting sheet 5 of battery 4 contacts directly, and then gathers the voltage of each battery 4.In addition, working as needs to gather the temperature of each battery 4 When, temperature sensor (not shown) can be added in low pressure sampling system, temperature sensor is electrically connected to FPC 2 and contacts directly The electric connecting sheet 5 of battery 4 is connected to, and then gathers the temperature of each battery 4.

With reference to Fig. 4 to Fig. 6, seal assembly 3 may include：Housing 31 is arranged between FPC 2 and the through hole 11 of babinet 1 simultaneously The passage S worn with the extension 22 for FPC 2；And sealing element 32, it is sheathed on housing 31 and is pasted with the inner wall of babinet 1 It closes.

With reference to Fig. 6 and Fig. 7, housing 31 can be integrally formed；Preferably, 31 integrated injection molding of housing is on FPC 2.Housing 31 It can be formed by fixedly connecting by two halfbodies 311 with merging, the extension 22 that two halfbodies 311 cooperatively form together for FPC 2 is worn If passage S.Here, the material of housing 31 can be plastics or composite material, and each halfbody 311 of housing 31 can be by being molded into Type.

With reference to Figure 10 to Figure 12, each halfbody 311 has the mating surface with the cooperation of another halfbody 311, in order to by two halfbodies 311 are fixedly connected, and can set to be tightly connected the first engaging member T1 of two halfbodies 311 in the mating surface of each halfbody 311. First engaging member T1 can be molded to be formed in each halfbody 311, and specifically, the first engaging member T1 can be injection on each halfbody 311 One layer of thin-walled rubber, when the first engaging member T1 reaches certain decrement, so that it may ensure the sealing between two halfbodies 311.

In order to ensure the sealing between the extension 22 of FPC 2 and the through hole 11 of babinet 1, sealing element 32 can be that annular is close Seal, ring type seal is sheathed on the periphery of housing 31 and the inner wall directly with babinet 1 is bonded.In addition, in order to ensure to seal While, it being also convenient for assembling, sealing element 32 can be amplexiformed by two splits 321 with merging, two splits 321 coordinate together, It is sheathed on housing 31 and is bonded with the inner wall of babinet 1.Due to rubber material usually have it is elastic and waterproof, airtight, because This sealing element 32 can be made of rubber material.

With reference to Figure 10 to Figure 12, split 321 has the mating surface with another split 321 cooperation, in order to by two splits 321 It is fixedly connected, can set to be tightly connected the second engaging member T2 of two splits 321 in the mating surface of each split 321.The Two engaging member T2 can be molded to be formed in each split 321, and specifically, the second engaging member T2 can be injection in one on each halfbody 311 Layer thin-walled rubber, when the second engaging member T2 reaches certain decrement, so that it may ensure the sealing between two splits 321.

With reference to Fig. 7 and Fig. 9, each split 321 of sealing element 32 can have：Outside portion 3211 engages a corresponding halfbody 311 Periphery.

With reference to Fig. 7 and Fig. 8, each halfbody 311 can have：Recess portion 3111 is arranged at the inner peripheral surface of halfbody 311.Reference Fig. 7, Fig. 9 and Figure 10, each split 321 can also have：Inside portion 3212 engages the inner peripheral surface of a corresponding halfbody 311；And link block 3213, it connects in outside portion 3211 and inside portion 3212 and the fixed recess portion 3111 for corresponding to a halfbody 311.Wherein, two points Two inside portions 3212 of body 321 are combined together, and to form a part of the passage S, (i.e. the extension 22 of FPC 2 is being worn If the sealing element 32 formed with two splits 321 is worn while housing 31 formed with two halfbodies 311).

With reference to Fig. 8 and Figure 12, each halfbody 311 can also have：Perforation 3112 is disposed through the bottom wall of recess portion 3111.Ginseng According to Figure 11 and Figure 12, a part for the link block 3213 of each split 321 passes through and fixes the perforation of a corresponding halfbody 311 3112, and another part is fixed and is supported on the bottom wall of recess portion 3111.

Sealing element 32, which can be molded, is formed at housing 31.Specifically, each split 321 of sealing element 32 corresponds to injection in housing 31 A halfbody 311 form, this two parts is then sealed company by the first engaging member T1 and the second engaging member T2 again It connects, the outside portion 3211 of each split 321 is in the outside of housing 31 at this time, and the inside portion 3212 of each split 321 is in The inside of housing 31.

With reference to Fig. 6 and Fig. 7, seal assembly 3 may also include：Fixing piece 33, for by the place of two halfbodies 311 of housing 31 It is fixed together in the part in 1 outside of babinet.Here, fixing piece 33 is fixedly clamped the institute of two halfbodies 311 in the outside of babinet 1 Part is stated, not only strengthens the sealing between housing 31 and FPC 2, it is ensured that fixation between seal assembly 3 and babinet 1 (effectively preventing seal assembly 3 from the through hole 11 of babinet 1 to deviate from).

With reference to Fig. 7, Fig. 8 and Figure 10 to Figure 12, each halfbody 311 can have：Stopper section 3113, positioned at the inside of babinet 1；The One protrusion 3114 is spaced apart with stopper section 3113 and the first groove 3115, the first protrusion 3114 is formed together with stopper section 3113 Coordinate for the through hole 11 with babinet 1, the first groove 3115 is used to be arranged for sealing element 32 and make sealing element 32 out of babinet 1 Side seal through hole 11；And second protrusion 3116, it is spaced apart with the first protrusion 3114 and forms the together with the first protrusion 3114 Two grooves 3117, the second groove 3117 are located at the outside of babinet 1 and for coordinating with fixing piece 33.

It remarks additionally herein, when sealing element 32 is individual ring type seal, the first groove 3115 is for ring Shape sealing ring is arranged；When sealing element 32 can be amplexiformed by two splits 321 with merging, the first groove 3115 is for each split 321 outside portion 3211 is arranged.

With further reference to Fig. 6 and Fig. 7, the shape of fixing piece 33 can be " u "-shaped, and the fixing piece 33 of U-shaped is caught in two halfbodies In 311 the second groove 3117 and clamp two halfbodies 311.

It finally further illustrates, in the battery modules of the utility model, in order to ensure the logical of FPC 2 and babinet 1 Air-tightness between hole 11, the effect of seal assembly 3 are mainly reflected at following 2 points：First, housing 31 is arranged in through hole 11, it is close The inside portion 3212 of two splits 321 of sealing 32 is formed at 31 inside of housing and FPC 2 and and FPC is sandwiched inside housing 31 2 are tightly connected, so as to ensure that the sealing between housing 31 and FPC 2；Second is that the outside of two splits 321 of sealing element 32 Inner wall of the portion 3211 at setting through hole 11 of the outside of housing 31 with babinet 1 is bonded, so as to ensure that housing 31 and through hole 11 Between sealing.

Claims

1. a kind of battery modules, including：

Babinet (1) is provided with through hole (11)；

FPC(2)；

It is characterized in that,

FPC (2) has extension (22), and extension (22) stretches out babinet (1) outside via the through hole (11) on babinet (1)；

Battery modules further include：Seal assembly (3), be arranged at the extensions (22) of FPC (2) and babinet (1) through hole (11) it Between and seal FPC (2) and through hole (11).

2. battery modules according to claim 1, which is characterized in that seal assembly (3) includes：

Housing (31) is arranged between FPC (2) and the through hole (11) of babinet (1) and is worn with the extension (22) for FPC (2) If passage (S)；And

Sealing element (32) is sheathed on housing (31) and is bonded with the inner wall of babinet (1).

3. battery modules according to claim 2, which is characterized in that housing (31) is integrally formed.

4. battery modules according to claim 2, which is characterized in that housing (31) is solid with merging by two halfbodies (311) Surely it is formed by connecting, two halfbodies (311) cooperatively form the passage (S) worn for the extension (22) of FPC (2) together.

5. battery modules according to claim 4, which is characterized in that each halfbody (311) has matches somebody with somebody with another halfbody (311) The mating surface of conjunction is provided in the mating surface of each halfbody (311) to be tightly connected the first engaging member of two halfbodies (311) (T1)。

6. battery modules according to claim 2, which is characterized in that sealing element (32) is by two splits (321) with merging It amplexiforms, two splits (321) coordinate, are sheathed on housing (31) and are bonded with the inner wall of babinet (1) together.

7. battery modules according to claim 6, which is characterized in that each split (321) has：Outside portion (3211), connects Close the periphery of a corresponding halfbody (311).

8. battery modules according to claim 7, which is characterized in that

Housing (31) is formed by fixedly connecting by two halfbodies (311) with merging, and two halfbodies (311) are cooperatively formed together for FPC (2) passage (S) that extension (22) is worn；

Each halfbody (311) has：Recess portion (3111) is arranged at the inner peripheral surface of halfbody (311)；

Each split (321) also has：

Inside portion (3212) engages the inner peripheral surface of a corresponding halfbody (311)；And

Link block (3213), connection outside portion (3211) and inside portion (3212) and the recess portion of a fixed corresponding halfbody (311) (3111) in；

Wherein, two inside portions (3212) of two splits (321) are combined together, to form a part of the passage (S).

9. battery modules according to claim 8, which is characterized in that

Each halfbody (311) also has：It perforates (3112), is disposed through the bottom wall of recess portion (3111)；

A part for the link block (3213) of each split (321) passes through and fixes the perforation (3112) of a corresponding halfbody (311), And another part is fixed and is supported on the bottom wall of recess portion (3111).

10. battery modules according to claim 4, which is characterized in that

Seal assembly (3) further includes：Fixing piece (33), for two halfbodies (311) of housing (31) to be in babinet (1) outside The part of side is fixed together；

Each halfbody (311) has：

Stopper section (3113), positioned at the inside of babinet (1)；

First protrusion (3114) is spaced apart with stopper section (3113) and forms the first groove together with stopper section (3113) (3115), the first protrusion (3114) are used to coordinate with the through hole (11) of babinet (1), and the first groove (3115) is used for for sealing element (32) it is arranged and makes inner seal through hole (11) of the sealing element (32) from babinet (1)；And

Second protrusion (3116) is spaced apart with the first protrusion (3114) and forms the second groove together with the first protrusion (3114) (3117), the second groove (3117) is located at the outside of babinet (1) and for coordinating with fixing piece (33).