CN207719252U

CN207719252U - Integrative cladding battery of formula of moulding plastics block

Info

Publication number: CN207719252U
Application number: CN201721669496.7U
Authority: CN
Inventors: 刘礼刚
Original assignee: Guangzhou Kentli Electronics Technology Co ltd
Current assignee: Guangzhou Kentli Electronics Technology Co ltd
Priority date: 2017-12-04
Filing date: 2017-12-04
Publication date: 2018-08-10
Anticipated expiration: 2027-12-04

Abstract

The utility model provides an integrative cladding battery of formula of moulding plastics block relates to battery technical field. In the integrative cladding battery of formula block of moulding plastics, the box hat formula structure as an organic whole, the middle part of box hat has inside bellied joint portion, and the upper end of the injection molding body supports the step-down circuit board. The battery cell is located below the clamping portion. The conductive tube penetrates through the injection molding body, and the positive cap, the voltage reduction circuit board, the conductive tube, the positive lead and the positive end of the battery cell are electrically connected in sequence. The lower end of the steel shell is electrically connected with the negative end of the battery cell, and the upper end of the steel shell is electrically connected with the step-down circuit board through a negative lead. This integrative cladding battery's of formula of moulding plastics block box hat is cladding formula's an organic whole structure, and simple structure is compact, based on joint portion can make each spare part install in the box hat convenient accurately, and processing is convenient, and the performance is more excellent.

Description

Integrative cladding battery of formula of moulding plastics block

Technical Field

The utility model relates to a battery technology field particularly, relates to an integrative cladding battery of formula of moulding plastics block.

Background

Nowadays, electronic products are very popular, and batteries are widely used, and include alkaline zinc-manganese batteries, cadmium-nickel batteries, hydrogen-nickel batteries, lithium ion batteries, fuel batteries, solar batteries, and the like.

Lithium ion batteries are widely used by people, wherein a positive electrode material of the lithium ion battery is cobalt lithium oxide, a negative electrode material of the lithium ion battery is a carbon material, and the battery realizes the charging and discharging process of the battery through the insertion and extraction of lithium ions generated by a positive electrode in the negative electrode carbon material.

Since the advent of lithium ion batteries, lithium ion batteries have been rapidly developed due to their excellent performance and are widely used in society. Lithium ion batteries rapidly occupy many fields, like well-known mobile phones, notebook computers, small cameras, etc., with advantages not comparable to other batteries, and are being used for military purposes in more and more countries. The application shows that the lithium ion battery is an ideal small green power supply.

At present, a conventional lithium ion battery generally adopts a two-section structure, i.e., a working part including a circuit board and a part including a lithium battery cell are separated, and then the two parts are welded into a whole. The structure is complex, the processing is complex, and the battery performance is poor. The structure is not explosion-proof in a sealing way or waterproof in an opening way, and the process is complex and the cost is high.

The existing steel shell battery is formed by directly sealing a battery cell by a steel shell and a cap assembly, and a nickel-hydrogen battery or a lithium ion battery is formed according to material characteristics. Because the lithium ion battery has the requirement of a charge and discharge protection circuit, the steel shell lithium ion battery can be only called as a battery core or an industrial battery, and is not suitable for direct operation and use by consumers.

Therefore, it is an urgent technical problem to design a lithium ion battery with simple structure, convenient processing, explosion-proof and water-proof properties and excellent performance.

SUMMERY OF THE UTILITY MODEL

The utility model provides an integrative cladding battery of formula of moulding plastics block, it aims at least part to solve current lithium ion battery not only the structure complicated, and processing is loaded down with trivial details, the relatively poor technical problem of battery performance moreover.

The utility model provides a first technical scheme:

an injection molding type cap integrated cladding battery comprises a sheath, a steel shell, and a positive electrode cap, a circuit board, an injection molding body, a conductive tube, a positive electrode lead, a negative electrode lead and a battery cell which are arranged in the steel shell;

the steel shell is of an integrated structure; the outer skin is coated on the outer surface of the steel shell; the positive electrode cap is arranged at the upper end inside the steel shell, and the circuit board, the injection molding body, the positive electrode lead and the battery cell are sequentially arranged below the positive electrode cap; the conductive tube penetrates through the injection molding body, and the positive electrode cap, the circuit board, the conductive tube, the positive electrode lead and the positive electrode end of the battery cell are electrically connected in sequence;

the middle part of the steel shell is provided with a clamping part which protrudes inwards, the lower end of the injection molding body is supported on the clamping part, and the upper end of the injection molding body supports the circuit board; the battery cell is positioned below the clamping part;

the lower end of the steel shell is electrically connected with the negative end of the battery cell, and the upper end of the steel shell is electrically connected with the circuit board through the negative lead.

Further, the circuit board comprises an inductor, and the inductor is embedded in the injection molding body.

Further, the injection molding type cap integrally coated battery also comprises an explosion-proof steel ball; the explosion-proof steel ball is movably arranged inside the conductive tube; the conductive tube is divided into a first section, a second section and a third section from top to bottom, and the inner diameters of the first section, the second section and the third section are sequentially reduced; the diameter of the explosion-proof steel ball is equal to the inner diameter of the second section.

Furthermore, the conductive tube is located under the positive electrode cap, and the positive electrode cap is provided with a vent hole which is communicated with the conductive tube.

Further, the injection molding type cap integrally coated battery also comprises a separator; the baffle is installed joint portion with between the electricity core, a plurality of through-holes have been seted up to the baffle.

Furthermore, the positive lead is a U-shaped spring, one end of the U-shaped spring is electrically connected to the conductive tube, and the other end of the U-shaped spring crosses over the edge of the partition plate and is electrically connected to the positive terminal of the battery cell.

Further, the injection molding type cap integrated cladding battery further comprises a gasket, the gasket is made of insulating materials, and the gasket enables the negative lead to be abutted against the inner surface of the steel shell.

Further, the negative electrode lead is annular, the cross section of the negative electrode lead is U-shaped, and the outer peripheral surface of the gasket is coated with the negative electrode lead.

Further, the gasket comprises an inner ring portion and an outer ring portion which are connected with each other, the axial width of the inner ring portion is larger than that of the outer ring portion, the negative lead is coated on the outer ring portion, an inward flanging is arranged at the upper end of the steel shell, and the flanging is abutted against the inner ring portion.

The utility model provides a second technical scheme:

the injection molding type cap integrated cladding battery comprises a sheath, a steel shell, and a positive electrode cap, a circuit board, an injection molding body, a positive electrode lead, a negative electrode lead and a battery cell which are arranged in the steel shell;

the steel shell is of an integrated structure; the outer skin is coated on the outer surface of the steel shell; the positive electrode cap is arranged at the upper end inside the steel shell, and the circuit board, the injection molding body, the positive electrode lead and the battery cell are sequentially arranged below the positive electrode cap; the positive electrode cap, the circuit board, the positive electrode lead and the positive electrode end of the battery cell are electrically connected in sequence;

the lower end of the steel shell is electrically connected with the negative end of the battery cell, and the upper end of the steel shell is electrically connected with the circuit board through the negative lead;

a channel is formed in the injection molding body, and an explosion-proof steel ball is arranged in the channel.

Compare current lithium ion battery, the utility model provides an integrative cladding battery of formula of moulding plastics block's beneficial effect is:

firstly, the steel casing formula structure as an organic whole, positive pole cap, circuit board, injection molding, current-conducting tube, anodal lead wire, negative pole lead wire and electric core all set up inside the steel casing to formed the integrative structure of cladding formula, simple structure is compact.

Secondly, the middle part of the steel shell is provided with a clamping part which protrudes inwards, the lower end of the injection molding body is supported on the clamping part, and the upper end of the injection molding body supports the circuit board; the battery cell is positioned below the clamping part; like this, the circuit board with electric core is firm in the inside position of box hat, moreover, based on joint portion can make each spare part install in the box hat convenient accurately, and processing is convenient, and the performance is more excellent.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on these drawings without inventive efforts.

Fig. 1 is a schematic structural view of an injection molding cap integrally covered battery according to a first embodiment of the present invention.

Fig. 2 is a schematic structural view of the injection-molded cap integrated covered battery with the outer skin removed according to the first embodiment of the present invention.

Fig. 3 is a schematic view of a full-section structure of an injection molding cap integrated cladding battery provided by the first embodiment of the present invention.

Fig. 4 is an enlarged schematic view of the upper end portion of fig. 3.

Fig. 5 is an enlarged schematic structural view of an upper end portion of an injection molded cap integrally covering a battery according to a second embodiment of the present invention.

Icon: 100-an injection molding type cap covers the battery integrally; 1-outer skin; 2-a steel shell; 21-flanging; 22-a clamping part; 3-positive electrode cap; 31-air holes; 4-a negative lead; 5-a gasket; 51-an inner ring portion; 52-an outer ring portion; 6-a circuit board; 7-injection molding; 8-a conductive tube; 81-first stage; 82-a second segment; 83-third stage; 9-explosion-proof steel balls; 10-positive lead; 11-a separator; 111-vias; 12-electric core.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are merely for convenience of description of the present invention and for simplicity of description, and do not indicate or imply that the equipment or components that are referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

First embodiment

Referring to fig. 1 to 4, the present embodiment provides an injection molding type cap integrally coated battery 100, and the injection molding type cap integrally coated battery 100 is a lithium ion battery. The injection molding type cap integrated cladding battery 100 comprises a sheath 1, a steel shell 2, and a positive electrode cap 3, a circuit board 6, an injection molding body 7, a conductive tube 8, an explosion-proof steel ball 9, a partition plate 11, a positive electrode lead 10, a negative electrode lead 4, a gasket 5 and a battery cell 12 which are arranged inside the steel shell 2. The battery cells 12 may be lithium battery cells or sodium battery cells.

The sheath 1 is made of an insulating material. The steel shell 2 is of an integrated structure. The outer skin 1 is coated on the outer surface of the steel shell 2. The upper end of the steel shell 2 is provided with an inward flanging 21, and the middle part of the steel shell 2 is provided with an inward convex clamping part 22. The negative lead 4, the gasket 5, the circuit board 6, the injection molded body 7, the conductive tube 8 and the explosion-proof steel ball 9 are arranged between the flanging 21 and the clamping part 22. The partition board 11 and the battery cell 12 are arranged between the clamping part 22 and the bottom of the steel shell 2.

Positive electrode cap 3 sets up in the inside upper end of steel-clad 2, and positive electrode cap 3's below is provided with circuit board 6, injection molding 7, anodal lead wire 10 and electric core 12 in proper order. The partition board 11 is installed between the clamping portion 22 and the battery cell 12. The lower end of the injection molded body 7 is supported on the clamping portion 22, and the upper end of the injection molded body 7 supports the circuit board 6.

The conductive tube 8 penetrates through the injection molded body 7, and the positive electrode cap 3, the circuit board 6, the conductive tube 8, the positive electrode lead 10 and the positive electrode end of the battery cell 12 are electrically connected in sequence. The circuit board 6 comprises components such as an inductor, and the components such as the inductor are embedded in the injection molding body 7.

The lower end of the steel shell 2 is electrically connected with the negative end of the battery cell 12, and the upper end of the steel shell 2 is electrically connected with the circuit board 6 through the negative lead 4. The gasket 5 is made of insulating material, and the gasket 5 pushes the negative lead 4 against the inner surface of the steel shell 2.

Specifically, the negative electrode lead 4 is annular, the cross section of the negative electrode lead 4 is U-shaped, and the outer peripheral surface of the gasket 5 is covered with the negative electrode lead 4. The gasket 5 comprises an inner ring part 51 and an outer ring part 52 which are connected with each other, the axial width of the inner ring part 51 is larger than that of the outer ring part 52, the negative electrode lead 4 is coated on the outer ring part 52, the upper end of the steel shell 2 is provided with an inward flanging 21, and the flanging 21 is abutted against the inner ring part 51.

The positive lead 10 is a U-shaped spring, one end of the U-shaped spring is electrically connected to the conductive tube 8, and the other end of the U-shaped spring crosses the edge of the partition 11 and is electrically connected to the positive terminal of the battery cell 12.

The conductive tube 8 is positioned right below the positive electrode cap 3, and the explosion-proof steel ball 9 is movably arranged inside the conductive tube 8. The conductive tube 8 is divided into a first section 81, a second section 82 and a third section 83 from top to bottom, and the inner diameters of the first section 81, the second section 82 and the third section 83 are reduced in sequence.

The diameter of the explosion-proof steel ball 9 is equal to the inner diameter of the second section 82. The positive electrode cap 3 is provided with a vent hole 31, and the vent hole 31 is communicated with the conductive tube 8. The partition 11 is provided with a plurality of through holes 111.

In other embodiments, the conductive tube 8 may not be provided with the third segment 83, simplifying the structure of the conductive tube 8.

The battery cell 12 can generate gas in the working process, the gas enters the third section 83 of the conducting tube 8 through the through hole 111 on the partition plate 11, when the pressure of the gas reaches a certain value, the gas jacks up the explosion-proof steel ball 9, so that the explosion-proof steel ball 9 enters the first section 81 of the conducting tube 8 or breaks away from the conducting tube 8, the gas enters the positive electrode cap 3 through the conducting tube 8 and is finally discharged to the outside through the air hole 31 on the positive electrode cap 3, and therefore the phenomenon that the internal air pressure of the steel shell 2 is too large, explosion is caused, and safety is improved.

The peripheral surface of the conductive tube 8 is provided with a groove, the position of the injection molding body 7 corresponding to the groove is provided with a bulge, and the groove is matched with the bulge, so that the injection molding body 7 is tightly and firmly matched with the conductive tube 8, parts below the injection molding body 7 are fixed in position, and the performance is stable.

The beneficial effects of the integrative cladding battery 100 of the formula of moulding plastics block that this embodiment provided are:

firstly, the steel shell 2 is of an integrated structure, and the positive electrode cap 3, the circuit board 6, the injection molded body 7, the conductive tube 8, the positive electrode lead 10, the negative electrode lead 4 and the battery cell 12 are all arranged inside the steel shell 2, so that a coated integrated structure is formed, and the structure is simple and compact.

And secondly, the middle part of the steel shell 2 is provided with a clamping part 22 protruding inwards, the lower end of the injection molding body 7 is supported on the clamping part 22, and the upper end of the injection molding body 7 supports the circuit board 6. The battery cell 12 is located below the clamping portion 22. Like this, circuit board 6 and electric core 12 are firm in the inside position of box hat 2, moreover, based on joint portion 22, can make each spare part install in box hat 2 convenient accurately, and processing is convenient, and the performance is more excellent.

Finally, the pressure relief explosion-proof system composed of the conductive tube 8, the explosion-proof steel ball 9 and the like can avoid explosion caused by overlarge air pressure in the steel shell 2, and the safety is improved.

Second embodiment

Referring to fig. 5, the present embodiment provides an injection molded cap integrally covered battery 100, which has a similar structure to the injection molded cap integrally covered battery 100 provided in the first embodiment, except that the battery 100 integrally covered by the injection molded cap of the present embodiment is not provided with a conductive tube 8.

A channel is formed in the injection molding body 7, the channel is divided into a first section 81, a second section 82 and a third section 83 from top to bottom, and the inner diameters of the first section 81, the second section 82 and the third section 83 are sequentially reduced. The diameter of the explosion-proof steel ball 9 is equal to the inner diameter of the second section 82.

The battery cell 12 can generate gas in the working process, and when the pressure of the gas reaches a certain value, the gas jacks up the explosion-proof steel ball 9, so that the explosion-proof steel ball 9 enters the first section 81 or is separated from the channel, and the pressure relief effect is realized.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An injection molding type cap integrated cladding battery is characterized in that the injection molding type cap integrated cladding battery comprises a sheath, a steel shell, and a positive electrode cap, a circuit board, an injection molding body, a conductive tube, a positive electrode lead, a negative electrode lead and a battery cell which are arranged in the steel shell;

the steel shell is of an integrated structure; the outer skin is coated on the outer surface of the steel shell; the positive electrode cap is arranged at the upper end inside the steel shell, and the circuit board, the injection molding body, the positive electrode lead and the battery cell are sequentially arranged below the positive electrode cap; the conductive tube penetrates through the injection molded body, and the positive electrode cap, the circuit board, the conductive tube, the positive electrode lead and the positive electrode end of the battery cell are electrically connected in sequence;

2. An injection molded cap integrally covered battery as claimed in claim 1, wherein the circuit board comprises an inductor embedded in the injection molded body.

3. The integrally coated battery with an injection molded cap as claimed in claim 1, wherein the integrally coated battery with an injection molded cap further comprises explosion-proof steel balls; the explosion-proof steel ball is movably arranged in the conductive tube; the conductive tube is divided into a first section, a second section and a third section from top to bottom, and the inner diameters of the first section, the second section and the third section are sequentially reduced; the diameter of the explosion-proof steel ball is equal to the inner diameter of the second section.

4. An injection molding type cap integrated cladding battery according to claim 3, wherein the conductive tube is located right below the positive electrode cap, and the positive electrode cap is provided with a vent hole which is communicated with the conductive tube.

5. An injection molded cap integrally wrapped battery according to claim 1, wherein the injection molded cap integrally wrapped battery further comprises a separator; the baffle is installed joint portion with between the electricity core, a plurality of through-holes have been seted up to the baffle.

6. The integrally-coated battery with the injection-molded cap according to claim 5, wherein the positive lead is a U-shaped spring, one end of the U-shaped spring is electrically connected with the conductive tube, and the other end of the U-shaped spring crosses over the edge of the partition plate to be electrically connected with the positive end of the battery core.

7. The integrally covered battery with an injection molded cap as claimed in claim 1, further comprising a gasket made of an insulating material, wherein the gasket abuts against the negative lead on the inner surface of the steel can.

8. An injection molded cap integrally-coated battery according to claim 7, wherein the negative electrode lead is ring-shaped, the cross section of the negative electrode lead is U-shaped, and the negative electrode lead is coated on the outer peripheral surface of the gasket.

9. An injection molded cap integrally coated battery according to claim 8, wherein the gasket comprises an inner ring portion and an outer ring portion which are connected with each other, the axial width of the inner ring portion is larger than that of the outer ring portion, the negative lead is coated on the outer ring portion, an inward flange is arranged at the upper end of the steel shell, and the flange is abutted against the inner ring portion.

10. An injection molding type cap integrated cladding battery is characterized in that the injection molding type cap integrated cladding battery comprises a sheath, a steel shell, and a positive electrode cap, a circuit board, an injection molding body, a positive electrode lead, a negative electrode lead and a battery cell which are arranged in the steel shell;

the lower end of the steel shell is electrically connected with the negative electrode end of the battery cell, and the upper end of the steel shell is electrically connected with the circuit board through the negative electrode lead;