CN217768701U

CN217768701U - Battery, battery module, battery pack and automobile battery system

Info

Publication number: CN217768701U
Application number: CN202221946135.3U
Authority: CN
Inventors: 不公告发明人
Original assignee: Envision Power Technology Jiangsu Co Ltd; Envision Ruitai Power Technology Shanghai Co Ltd
Current assignee: Envision Power Technology Jiangsu Co Ltd; Envision Ruitai Power Technology Shanghai Co Ltd
Priority date: 2022-07-26
Filing date: 2022-07-26
Publication date: 2022-11-08
Anticipated expiration: 2032-07-26

Abstract

The utility model discloses a battery, battery package, battery module and car battery system, this battery include naked electric core, utmost point ear and casing. The naked electric core is formed by positive and negative pole piece assembly. The casing has confined inner space, and inner space can hold naked electric core, and partly being located the casing of utmost point ear, another position extends to the casing outside and is used for output current. The insulation sleeve is sleeved on the pole lug and is positioned in the shell. The insulation sleeve is sleeved on the pole lug to prevent the pole lug from contacting the shell to cause short circuit of the battery cell or corrosion of the shell. The utility model discloses an insulation support replaces the rubberizing mode to make utmost point ear and casing insulating, and insulation support simple to operate reduces rubberizing process and rubberizing integrality and detects the process, and is difficult for taking place among the assembling process insulation support obscission. In addition, the insulating sleeve is arranged behind the pole lug and cannot be bonded with the pole lug, and the phenomenon that the pole lug of a naked battery cell is broken due to the assembly process is reduced.

Description

Battery, battery module, battery pack and automobile battery system

Technical Field

The utility model relates to a lithium cell technical manufacturing field, concretely relates to battery, battery module, battery package and car battery system.

Background

As one of the core components of new energy vehicles, lithium ions have the advantages of high energy density, long cycle life, safety, environmental protection, and the like, and are gradually becoming the mainstream direction of the electric era. Lithium ion battery divide into square-shell battery, laminate polymer battery, cylinder battery from the form, wherein laminate polymer battery and square-shell battery are inside all to adopt naked electric core to pile up into electric core along a direction, and positive negative pole ear one end is located the casing and is connected with naked electric core, and the other end stretches out and is used for output current outside the casing.

The shells of the soft package battery and the square-shell battery are made of aluminum-plastic films and metal materials respectively and can conduct electricity. The positive and negative electrode tabs are partially insulated from the casing to prevent the casing from conducting electricity, and the electrode tabs located inside the casing are usually insulated from the casing by means of adhesive tape.

However, in the process of gluing the tab, the tab is easily torn, so that the cell function is disabled. In addition, the electrolyte resistance of the existing colloid is poor, and the colloid is easy to fall off in the process of contacting the electrolyte for a long time. And the rubberizing process is complicated, easily leaks and pastes, and the integrality of rubberizing needs to be monitored after the process is accomplished, has increased process input and equipment investment.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a battery, battery module, battery package and car battery system to solve the problem that exists among the above-mentioned prior art.

In order to solve the above problems, according to an aspect of the present invention, there is provided a battery including a bare cell, a tab adapting structure, and a case, the tab being connected to the bare cell;

a case having an inner space to accommodate the bare cell and the tab;

the lug adapter structure is connected with the lug at one end and positioned outside the shell at the other end;

and the insulating sleeve is sleeved at the joint of the lug and the lug switching structure and is positioned in the shell.

In one embodiment, the tab and the tab adapting structure are two bare cells;

the number of the insulation sleeves is also two, and the two insulation sleeves are respectively sleeved at the two pole lugs and the pole lug switching structures.

In one embodiment, the insulating sleeve is a heat shrink tube.

In one embodiment, the one end of pyrocondensation pipe supports and leans on naked electric core, and the casing is connected to the other end.

In one embodiment, the insulating sleeve is tightly attached to the tab.

In one embodiment, the housing is an aluminum-plastic film, the tab adapting structure is further provided with a tab colloid, the colloid is used for sealing the aluminum-plastic film, one end of the insulating sleeve is connected with the bare cell, and the other end of the insulating sleeve extends to the colloid.

In one embodiment, the housing is a square shell, and the tab connection structure is an adapter plate.

The present invention also relates to, a battery module, including:

a housing;

a plurality of the above-mentioned batteries, and a plurality of the batteries are located in the shell.

The present invention also relates to a battery pack, comprising:

a frame;

the battery modules are arranged side by side and are arranged in the frame.

The invention also relates to an automobile battery system which comprises the battery pack.

The utility model discloses an insulation support replaces the rubberizing mode to make utmost point ear and casing insulating, and insulation support simple to operate, between the ring overlap on utmost point ear can, reduce rubberizing process and rubberizing integrality and detect the process. And the insulating sleeve is sleeved outside the pole lug, so that the phenomenon of adhesive leakage in the adhesive attaching process can be avoided. In addition, the insulating sleeve is arranged behind the lug and can not be bonded, so that the phenomenon that the lug is torn due to the fact that the lug is driven by the shell is reduced.

Drawings

Fig. 1 is a schematic diagram of a battery according to the present invention.

Reference numerals are as follows: 100. a battery; 1. a naked battery cell; 2. a tab; 3. an insulating sleeve; 4. a housing.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the objects, features and advantages of the invention can be more clearly understood. It should be understood that the embodiments shown in the drawings are not intended as limitations on the scope of the invention, but are merely illustrative of the true spirit of the technical solution of the invention.

In the following description, for the purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. One skilled in the relevant art will recognize, however, that an embodiment can be practiced without one or more of the specific details. In other instances, well-known devices, structures and techniques associated with this application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In the following description, for the sake of clarity, the structure and operation of the present invention will be described with the aid of directional terms, but the terms "front", "rear", "left", "right", "outer", "inner", "outer", "inward", "upper", "lower", etc. should be understood as words of convenience and not as words of limitation.

The utility model relates to a battery 100, this battery 100 include naked electric core 1, utmost point ear 2, utmost point ear switching structure and casing 4.

Naked electric core 1 is piled up by positive and negative pole piece and is formed, and positive and negative pole piece passes through the diaphragm and keeps apart, and naked electric core 1 is last to adhere to there is active material, and active material and electrolyte reaction produce positive and negative ion.

Naked electric core 1 is connected to utmost point ear 2, and utmost point ear 2 includes positive polar ear and negative pole ear, and positive polar ear and negative pole ear are connected positive and negative pole piece respectively for output current.

Casing 4 has confined inner space, and inner space can hold naked electric core 1, utmost point ear 2 and electrolyte.

One end of the pole lug adapter structure is connected with the pole lug 2, and the other end is positioned outside the shell. The insulation sleeve 3 is located in the housing 4 and sleeved on the tab 2, and extends to the tab adapting structure. The housing 4 has conductivity, and the insulating sleeve 3 is sleeved on the tab 2 to prevent the tab 2 from contacting the housing 4.

Positive and negative pole ear is generally connected in naked electric core 1's both ends, prevents that positive and negative pole ear contact from taking place the short circuit phenomenon, also can set up in naked electric core 1 same one end, and positive and negative pole ear is spaced apart each other when being located naked electric core 1 same tip, prevents the short circuit. The tab switching structures are also two and are respectively connected with the positive and negative electrode tabs, and at least two insulation sleeves 3 are respectively sleeved on the positive and negative electrode tabs.

The utility model discloses an insulation support 3 replaces the rubberizing mode to make utmost point ear 2 and casing 4 insulating, and 3 simple to operate of insulation support, direct ring cover on utmost point ear 2 can, reduce rubberizing process and rubberizing integrality and detect the process. And the insulating sleeve 3 is sleeved outside the lug 2, so that the phenomenon of adhesive leakage in the adhesive attaching process can be avoided. In addition, the insulating sleeve 3 is arranged behind the lug 2 and cannot be bonded with the shell 4, so that the phenomenon that the lug 2 is torn due to the driving of the lug 2 by the shell 4 is reduced.

Preferably, the insulating sleeve 3 is made of heat shrinkable tube. During the in-service use, naked electric core 1 machine-shaping back, positive negative pole ear is located naked electric core 1's both ends or one end, overlaps two pyrocondensation pipes respectively again and locates positive negative pole ear on, can make the pyrocondensation pipe shrink and paste tight utmost point ear 2 through heating or blowing hot-blast, and the pyrocondensation pipe shrink back and utmost point ear 2 relatively fixed prevent that the pyrocondensation pipe from removing along utmost point ear 2, thereby cause the partial utmost point ear 2 that is located casing 4 to expose in the pyrocondensation pipe outside and contact with casing 4. After the heat-shrinkable tube is installed on utmost point ear 2, make it be fixed in on utmost point ear 2 through the heating, simple to operate, the heat-shrinkable tube is fixed for utmost point ear 2 moreover, and the heat-shrinkable tube can be complete wraps up utmost point ear 2, and heat-shrinkable tube and 4 non-adherences of casing can not cause utmost point ear 2 to tear moreover. In addition, the heat shrinkable tube is easy to shrink after being heated, and is convenient to process.

The heat shrinkable tube is generally made of PVC, silica gel or polyester, preferably polyester, and has low price and good insulation property.

In addition, battery 100 can be laminate polymer battery or square-shell battery 100 that casing 4 is the square shell for the laminate polymer battery of soft package for casing 4, and naked electric core 1 is located sealed laminate polymer or square shell, and utmost point ear 2 partly is located laminate polymer or square shell, and another part stretches out in laminate polymer or square shell. The casing 4 of laminate polymer battery is the plastic-aluminum membrane, and the plastic-aluminum membrane forms sealed casing 4 along the outside heat-seal of naked electric core 1.

Optionally, the tab adapting structure is further provided with a tab colloid, and the tab colloid is used for sealing the aluminum coating. Specifically, when the aluminum coating is subjected to heat sealing, the colloid can be melted, so that the tab switching structure and the aluminum plastic film are connected in a sealing manner. Naked electric core is connected to insulation support 3's one end, and the other end need extend to the heat-seal line or the utmost point ear colloid department of aluminium tectorial membrane to prevent to be located partly utmost point ear contact plastic-aluminum membrane in casing 4.

The casing 4 of the square-shell battery is made of metal, the square shell is generally welded to form the sealed casing 4, and the square shell is generally made of aluminum alloy. Similarly, 3 one ends of insulating sleeve need connect naked electric core 1, and the other end supports and leans on casing 4 department, prevents to be located casing 4 internal partly utmost point ear contact casing 4, causes the outage. The pole lug switching structure is a switching piece.

It should be noted that the insulation sleeve 3 can be connected with the naked electric core 1, and also can be abutted against the naked electric core 1 as long as the tab 2 and the shell 4 can be ensured to be insulated. Likewise the insulating sleeve 3 may be connected to the housing 4 or abut against the housing 4 without limitation.

Preferably, the insulation sleeve 3 is closely attached to the tab 2, and the insulation sleeve 3 has elasticity so as to be fitted over the tab 2, and then is contracted by heating to press the tab 2, thereby preventing the insulation sleeve 3 from moving along the tab 2 after being contracted.

The utility model discloses still relate to a battery 100 module, this battery 100 module include foretell a plurality of batteries 100 and shell, and this battery 100 can laminate polymer battery or square-shell battery, and a plurality of batteries 100 pile up and form the battery 100 stack body and lie in inside the shell, and two adjacent batteries 100's utmost point ear 2 passes through the connecting piece electricity and connects. The tabs 2 of the square-casing batteries are generally connected by tabs, while the pouch batteries are connected by a connector having superior conductivity, it being understood that the adjacent two batteries 100 may be electrically connected in parallel or in series. In addition, the battery 100 module further includes two end plates, which are respectively located at both ends of the battery 100 stacked body, the end plates are connected to both ends of the case 4, and an output electrode is provided inside the end plates, and the output electrode is connected to the battery 100 stacked body for outputting current.

The utility model discloses still relate to a battery package, this battery package includes shell and a plurality of foretell battery module, and a plurality of battery modules set up side by side or side by side arrangement, and set up in the frame.

The utility model discloses still relate to an automobile battery system, can be applied to this automobile battery system with foretell battery package.

The utility model discloses an insulation support 3 replaces the rubberizing mode to make utmost point ear 2 and casing 4 insulating, and 3 simple to operate of insulation support, direct ring overlap on utmost point ear 2 can, reduce rubberizing process and rubberizing integrality and detect the process. And the insulating sleeve 3 is sleeved outside the tab 2, so that the phenomenon of adhesive leakage in the adhesive sticking process can be avoided. In addition, the insulating sleeve 3 is arranged behind the lug 2 and cannot be bonded with the shell 4, so that the phenomenon that the lug 2 is torn due to the driving of the lug 2 by the shell 4 is reduced.

The above description is for the purpose of illustrating the preferred embodiments of the present invention and it is to be understood that various changes and modifications may be made by those skilled in the art after reading the above teaching of the present invention. Such equivalents are intended to fall within the scope of the claims appended hereto.

Claims

1. A battery, comprising:

naked electric core;

the lug is connected to the naked electric core;

a case having an inner space to accommodate the bare cell and the tab;

2. The battery of claim 1, wherein the tab and the tab adapting structure are two bare cells;

the two insulation sleeves are respectively sleeved at the lug and lug switching structures.

3. The cell defined in claim 1, wherein the insulating sleeve is a heat shrink tube.

4. The battery of claim 3, wherein one end of the heat shrink tube abuts against the bare cell and the other end of the heat shrink tube is connected to the housing.

5. The battery of claim 1, wherein the insulating sleeve abuts the tab.

6. The battery of claim 1, wherein the case is an aluminum-plastic film, the tab adapting structure is further provided with a tab colloid, the colloid is used for sealing the aluminum-plastic film, one end of the insulating sleeve is connected to the bare cell, and the other end of the insulating sleeve extends to the colloid.

7. The battery of claim 1, wherein the housing is a square shell and the tab adapting structure is an adaptor sheet.

8. The utility model provides a battery module which characterized in that, battery module includes:

a housing;

a plurality of the batteries of claim 1, and a plurality of the batteries are located within the housing.

9. A battery pack, comprising:

a frame;

a plurality of the battery modules according to claim 8, wherein the plurality of the battery modules are arranged side by side and mounted in the frame.

10. An automotive battery system, characterized in that it comprises the battery pack of claim 9.