CN104900819A - Secondary electrochemical battery sealing body with encapsulated type chip heat dissipation structure and battery - Google Patents
Secondary electrochemical battery sealing body with encapsulated type chip heat dissipation structure and battery Download PDFInfo
- Publication number
- CN104900819A CN104900819A CN201510321485.9A CN201510321485A CN104900819A CN 104900819 A CN104900819 A CN 104900819A CN 201510321485 A CN201510321485 A CN 201510321485A CN 104900819 A CN104900819 A CN 104900819A
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- China
- Prior art keywords
- negative pole
- circuit board
- pole cap
- board module
- battery
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Links
- 238000007789 sealing Methods 0.000 title abstract description 6
- 230000017525 heat dissipation Effects 0.000 title abstract 2
- 239000011149 active material Substances 0.000 claims description 26
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 20
- 229910052802 copper Inorganic materials 0.000 claims description 20
- 239000010949 copper Substances 0.000 claims description 20
- 239000002184 metal Substances 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 12
- 239000000758 substrate Substances 0.000 claims description 11
- 230000005855 radiation Effects 0.000 claims description 8
- 238000005538 encapsulation Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000004020 conductor Substances 0.000 abstract description 3
- JPOPEORRMSDUIP-UHFFFAOYSA-N 1,2,4,5-tetrachloro-3-(2,3,5,6-tetrachlorophenyl)benzene Chemical compound ClC1=CC(Cl)=C(Cl)C(C=2C(=C(Cl)C=C(Cl)C=2Cl)Cl)=C1Cl JPOPEORRMSDUIP-UHFFFAOYSA-N 0.000 description 9
- 229910052744 lithium Inorganic materials 0.000 description 8
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 7
- LJQOBQLZTUSEJA-UHFFFAOYSA-N 1,2,3,5-tetrachloro-4-(2,3,5,6-tetrachlorophenyl)benzene Chemical compound ClC1=C(Cl)C(Cl)=CC(Cl)=C1C1=C(Cl)C(Cl)=CC(Cl)=C1Cl LJQOBQLZTUSEJA-UHFFFAOYSA-N 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000003466 welding Methods 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005194 fractionation Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 150000002641 lithium Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/155—Lids or covers characterised by the material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention provides a secondary electrochemical battery sealing body with encapsulated type chip heat dissipation structure. The sealing body is used for sealing the opening part of the battery shell of a secondary electrochemical battery, and comprises a cathode cap, a circuit board module and an insulating washer, wherein a sunk wire turn structure is formed at one end, near the cathode cap, of the battery shell; the circuit board module is positioned between the wire turn and the cathode cap; a plurality of electronic components and heat conducting cabling are arranged on the circuit board module; the length of the diameter of the circuit board module is set between the sunk inner diameter formed by the wire turn and the inner diameter of the battery shell, so that the circuit board module is clamped on one side of the wire turn to seal the opening part of the battery shell; the circuit board module is connected with the cathode cap through a heat conducting material, and used for being respectively in heat contact with the cathode cap and the heat conducting cabling; the section of the insulating washer adopts a shape referring to the Specification; the insulating washer is arranged in the interspace among the battery shell, the circuit board module and the cathode cap, presses and fixes the circuit board module between the wire turn and the battery shell, and insulates the battery shell from the cathode cap.
Description
Technical field
The present invention relates to a kind of secondary cell, be specifically related to a kind of making active materials for use in secondary electrochemical cells seal body and the battery with encapsulation type chip cooling structure.
Background technology
In recent years, secondary cell (also referred to as rechargeable battery) has been widely used in various portable electric equipment and electronic equipment, such as toy, handheld device etc., and this proposes more and more higher requirement to secondary cell energy storage energy.Lithium rechargeable battery due to have energy high, can the advantage such as high power discharge, environmental protection, be thus applied in above field gradually.
The normal work of rechargeable battery often needs to coordinate with the integrated circuit (IC) chip of other functions, has reached desirable working effect.Usual rechargeable battery and integrated circuit (IC) chip encapsulate respectively, and then by the connection of circuit board and wire, combine use.Such peripheral cell is many, and production process is many, cost is high, and greatly, poor-performing, is unfavorable for miniaturization or microminiaturization for rechargeable battery and integrated circuit (IC) chip volume.
When carrying out lithium rechargeable battery encapsulation, space shared by lithium rechargeable battery each several part is all comparatively fixing, wherein, this electrostrictive polymer core inner then comprises anode pole piece, barrier film and cathode pole piece, and the battery core closedtop in one end that anode pole piece deviates from barrier film with specified altitude assignment encapsulates, because battery core closedtop occupies the certain altitude of this polymer battery core, thus decrease the useful space of this electrostrictive polymer core inner.And the space availability ratio of polymer battery core and the energy density of lithium rechargeable battery and capacity have comparatively Important Relations, general, the space availability ratio of this polymer battery core is larger, the energy density of this lithium rechargeable battery and capacity are also larger, therefore, existing lithium rechargeable battery ubiquity the low and energy density of the lithium rechargeable battery caused of space availability ratio due to polymer battery core and the lower problem of capacity.
Summary of the invention
The invention provides a kind of making active materials for use in secondary electrochemical cells seal body with encapsulation type chip cooling structure, described seal body is used for the peristome of the battery container closing described making active materials for use in secondary electrochemical cells, wherein said seal body comprises: negative pole cap, circuit board module and insulating washer, and described battery container has the circle line structure of depression in its one end near described negative pole cap; Described circuit board module is between described circle line and described negative pole cap, which is provided with multiple electronic component and for carrying out heat conducting heat conduction wiring for during the work of described electronic component, the diameter of described circuit board module is set between the internal diameter and the internal diameter of battery container of the depression of described circle line formation, thus be stuck in described circle line side for closing the peristome of described battery container, described circuit board module is connected by Heat Conduction Material with described negative pole cap, for respectively with described negative pole cap and connect up with described heat conduction and carry out thermo-contact; The cross section of described insulating washer is
shape, is arranged in the space of described battery container, circuit board module and negative pole cap, and extruding permanent circuit plate module between described circle line and battery container, and isolates described battery container and described negative pole cap.
Preferably, between described circuit board module with described negative pole cap for scolding tin is connected.
Preferably, the both sides of described circuit board module have metal substrate and circuit covers copper face, described circuit covers on copper face and is provided with at least one thermal hole, for heat is directed at side near negative pole cap from described circuit board away from the side of described negative pole cap, wherein, described metal substrate connects the electronic component that can produce heat and described circuit covers copper face, and the circuit near negative pole cap side covers copper face and is connected to the position that described circuit board module contacts with negative pole cap.
Preferably, the shape at position that described circuit board module contacts with described negative pole cap is " C " type ring-type.
Preferably, the opposite side of described negative pole cap relative to described circle line is provided with draw-in groove, and the quantity of described draw-in groove is at least two, for clamping also fixing described negative pole cap, is provided with heat radiation material layer in described draw-in groove.
Preferably, the edge of described negative pole cap is provided with the dop corresponding with the position of described draw-in groove, for described negative pole cap is fixed on described circuit board module.
Preferably, described negative pole cap is made up of Heat Conduction Material.
Preferably, described battery container is the box hat of cylinder or rectangular structure.
Preferably, described insulating washer is a flexibility and elastic ring insulating blanket.
Preferably, described in
a part for the insulating washer of shape is for extruding permanent circuit plate module between described circle line and battery container, and another part is for isolating described battery container and described negative pole cap.
Preferably, described circle line is 0.2-1.2mm relative to the cup depth of battery casing surface.
Preferably, described seal body is used for the peristome of the battery container closing described making active materials for use in secondary electrochemical cells, and described battery also comprises battery core and positive electrode cap, and wherein, described positive electrode cap and described battery container connect and compose the positive pole of described secondary cell; Described battery core is positioned in described battery container, between described positive electrode cap and described circle line structure.
Seal body accessory structure for electrochemical cell design of the present invention is rationally ingenious; at described electrochemical cell electrode sealing part, there is electrode cap; described electrode cap can coordinate with circuit board and forms shielding construction; its internal high frequency components and parts interference to external world can be stoped; and the heat conduction produced when circuit board can be worked is to extraneous, plays the effect of protective circuit plate and components and parts.In addition, described battery container corresponds to and between battery core and circuit board, is furnished with circle line structure, for locating the relative position of battery core and circuit board, and coordinate with the insulating washer between electrode cap and battery container circuit board is fixed, and without any need for welding.
Accompanying drawing explanation
With reference to the accompanying drawing of enclosing, the following description by embodiment of the present invention is illustrated by the more object of the present invention, function and advantage, wherein:
Fig. 1 a diagrammatically illustrates the structural representation of electrochemical cell of the present invention.
Fig. 1 b is the decomposition diagram of electrochemical cell of the present invention.
Fig. 1 c is the profile of Fig. 1 a along A-A direction.
Fig. 1 d is the circuit diagram of circuit board module of the present invention.
Fig. 2 a diagrammatically illustrates the stereo decomposing structural representation of the seal body accessory 200 for electrochemical cell of making active materials for use in secondary electrochemical cells first embodiment of the present invention.
Fig. 2 b diagrammatically illustrates the enlarged partial sectional view of the seal body accessory 200 for electrochemical cell of making active materials for use in secondary electrochemical cells first embodiment of the present invention.
Fig. 3 a is the structural representation according to making active materials for use in secondary electrochemical cells second embodiment of the present invention.
Fig. 3 b is the fractionation structural representation according to making active materials for use in secondary electrochemical cells second embodiment of the present invention.
Fig. 3 c is the profile of Fig. 3 b along C-C direction.
Fig. 4 is the three-dimensional exploded view of the seal body accessory 400 for electrochemical cell of third embodiment of the invention.
Fig. 5 is the structural representation of the second printed circuit board (PCB) in third embodiment of the invention.
Embodiment
By reference to one exemplary embodiment, object of the present invention and function and the method for realizing these objects and function will be illustrated.But the present invention is not limited to following disclosed one exemplary embodiment; Can be realized it by multi-form.The essence of specification is only help various equivalent modifications Integrated Understanding detail of the present invention.
Should be appreciated that description and the follow-up detailed description of aforementioned cardinal principle are exemplary illustration and explanation, should not be used as the restriction to the claimed content of the present invention.
Hereinafter, embodiments of the invention will be described with reference to the drawings.In the accompanying drawings, identical Reference numeral represents same or similar parts, or same or similar step.
The invention provides a kind of electrochemical secondary cell, Fig. 1 a, 1b are respectively the structural representation Sum decomposition perspective view of electrochemical cell of the present invention.As shown in Fig. 1 a, 1b, a kind of electrochemical cell 100, comprising: battery container 101, the battery core 102 be placed in battery container 101, negative pole cap 103, the circuit board module 104 being placed in the space between battery core 102 and negative pole cap 103 and positive electrode cap 105.Battery core 102 overcoat has battery container 101, and battery container 101 is the box hat of cylinder or rectangular structure.According to one embodiment of present invention, positive electrode cap 105 is molded as one structure with described battery container 101 dextrorsely.
Circuit board module 104 is at least one layer printed circuit board (PCB), has the first side and the second side, and wherein the first side is pointed to negative pole cap 103, second side relative to described electrochemical cell 100 and pointed to battery core 102 relative to described electrochemical cell 100.PCB is the circuit board (as shown in Figure 1 d) it being printed with wiring pattern, and has and have roughly corresponding size with the housing inner diameter of described battery 100.Multiple printed conductor and components and parts are arranged in the first side or second side of circuit board module 104.Circuit board module 104 near negative pole cap 103 side of described battery 100, between battery core 102 and negative pole cap 103.Circuit board module 104 is provided with connector thus is fixed on circuit board module 104 by negative pole cap 103, such as, negative pole cap 103 can be fixed by welding on circuit board module 104, also can be fixed by modes such as clampings.Circuit board module is used for lithium cell charging protection, charging instruction, can also be used for the discharge prevention of battery, short-circuit protection, Cross prevention and control output voltage.Be provided with electrode connecting line 108a and 108b between circuit board module 104 and battery core 102, drawn respectively by the both positive and negative polarity of battery respectively, wherein 108a is positive lead, and 108b is negative lead.Fig. 1 c is the profile of Fig. 1 a along A-A direction.Between circuit board module 104 and the battery container 101 of outside, between negative pole cap 103 and battery container 101, be provided with insulating washer 106.Insulating washer 106 is a flexibility and has flexible annular insulating mat layer, and its shape along described electrochemical cell 101A-A section is " L " shape.Insulating washer 106 can play the effect of the battery container 101 of isolation as the first electrode and the negative pole cap 103 as the second electrode, and because the elastic reaction of insulating blanket 106 can extrude and fix circuit board module 104, the space between sealed cell housing 101 and negative pole cap 103.Particularly, as illustrated in figure 1 c, a part for L shape is for extruding permanent circuit plate module 104 between described circle line 107 and battery container 101, and another part is for isolating described battery container 101 and described negative pole cap 103.
The ring-shaped depression that position on the outer surface of battery container 101 between corresponding battery core 102 and printed circuit board (PCB) 106 has a circle inside is circle line 107.Described battery core 102 is positioned in described battery container 101, between positive electrode cap 105 and the structure of described circle line 107.Insulating washer 106 and circle line 107 be arranged so that circuit board module 104 is fixed on bottom the ring-shaped depression of battery container 101 and battery container 101 between, therefore battery container 101 and the connection of negative pole cap 103 are without any need for welding.
The setting of circle line 107 structure is used for positioning circuit plate module 104, particularly, the diameter of circuit board module 104 is set between the internal diameter of the ring-shaped depression formed at circle line 107 and the internal diameter of battery container 101, when assembling battery, first battery core 102 is placed in battery container 101, then circuit board module 104 is assembled in battery container 101, the structure that the size dimension of circuit board module 104 can be stuck in circle line 107 avoids the contact with battery core 102, and then by insulating blanket 106, battery container 101 and negative pole cap 103 are isolated, complete the assembling of battery 100.Said structure makes circuit board module 104 to define a closed space in battery container 101 inside for holding battery core 102 by the structure of circle line 107, thus can increase the volume of battery core 102, therefore increases the capacity of secondary cell.Preferably, battery core 102 is a closed structure, carries out work by being connected from its both positive and negative polarity of battery core 102 inside extraction with corresponding battery plus-negative plate.
Preferably, above-mentioned circle line 107 is 0.2-1.2mm relative to the battery container 101 depression in the surface degree of depth.
Fig. 2 a diagrammatically illustrates the stereo decomposing structural representation of the seal body accessory 200 for electrochemical cell of making active materials for use in secondary electrochemical cells first embodiment of the present invention.Fig. 2 b diagrammatically illustrates the enlarged partial sectional view of the seal body accessory 200 for electrochemical cell of first embodiment of the invention.As shown in Fig. 2 a, 2b, the insulating washer 207 that described seal body accessory 200 comprises a PCB 201, the 2nd PCB 202, negative pole cap 203 and arranges between the outside and battery container 206 of the 2nd PCB 202, negative pole cap 203.。According to one embodiment of present invention, a PCB 201 is two printed circuit board that area is identical with the 2nd PCB 202.A described PCB 201 is near battery core 204, and described 2nd PCB 202 is away from battery core 204.One PCB 201 is stuck on battery container 206 by circle line 205.2nd PCB 202 passes through to contact to realize being electrically connected with described negative pole cap 203 by its upper interface arrangment arranged, and with its composition shielding construction.One PCB 201 is furnished with multiple chip or circuit components near the side of battery core 204 and the 2nd PCB 202 away from the side of battery core 204, wherein, the components and parts that can produce radiation are in the course of the work arranged in the shielding construction that the 2nd PCB202 and negative pole cap 203 form.The outside of the 2nd PCB 202, negative pole cap 203 and battery container 206 and between be provided with insulating washer 207.Insulating washer 207 is a flexible annular insulating blanket, can extrude and fix a PCB 201 and the 2nd PCB 202 in circle line 205 place, the space between sealed cell housing 206 and negative pole cap 103.The position contacted with the 2nd PCB at battery container 206 and a PCB is contact-enhancing zinc-plated 210, with the gap between potted circuit plate and battery container.By the through hole 209 between a PCB and the 2nd PCB, the negative lead 208b (208a is positive lead, not shown) battery core 204 drawn is connected with the wire on the 2nd PCB with a PCB.The inner surface of through hole 209 is coated with electric conducting material, such as, be copper facing, therefore the wiring of multiple circuit board can be linked together by through hole 209, and be connected with the position of circuit board contacts with negative pole cap, thus conducted to negative pole cap.
Because the structure of making active materials for use in secondary electrochemical cells according to the present invention is very little, the area being therefore placed in the PCB of battery container inside is also very little.Owing to PCB being integrated with a large amount of electronic components, integrated level is higher, and therefore when making active materials for use in secondary electrochemical cells charges, electronic component can generate heat thus cause the temperature of PCB to raise, and is unfavorable for the normal work of PCB.Effectively can be realized the heat radiation of PCB by the special construction arranged according to above-mentioned seal body accessory 200 of the present invention.Particularly, pcb board can be laid with for carrying out heat conducting heat conduction wiring (not shown in Fig. 2) for during described electronic component work, such as, arrange with the form of printed wiring.On the opposite side of described pcb board relative to described circle line 205, namely the 2nd PCB 202 is as shown in Figure 2 on the side of negative pole cap 203, is provided with draw-in groove 208, for clamping and fixing described negative pole cap 203.In order to realize good heat radiation, heat radiation material layer is equipped with in described draw-in groove 208, such as metal material layer, described heat radiation material layer is connected with described negative pole cap thus realizes thermo-contact on the one hand, on the other hand with pcb board on lay for connecting up carry out thermo-contact for carrying out heat conducting heat conduction when described electronic component works, like this, the heat that electronic component operationally distributes can be delivered to negative pole cap 203 by heat conduction wiring and draw-in groove 208, and is delivered to outside by negative pole cap 203 and effectively spreads.
Negative pole cap 203 is preferably made up of Heat Conduction Material, with the heat of outwards diffusing electrons element generation effectively.Such as be made of metal.
It will be appreciated by persons skilled in the art that the seal body accessory 200 comprising two PCB shown in Fig. 2 is only exemplary, seal body accessory of the present invention is also applicable to the situation of a PCB or multi-layer PCB combination.
Fig. 3 is the another embodiment according to making active materials for use in secondary electrochemical cells radiator structure of the present invention.As shown in Figure 3 a, in the side away from negative pole cap, chip on circuit board and components and parts by contacting with the metal substrate 301 on circuit board by the heat conduction that produces when working to metal substrate 301, then pass to the circuit welded with metal substrate and cover copper face 302.Cover on copper face 302 at circuit and arrange one or more thermal hole 303, thermal hole 303 is through-hole structure, covers copper face 302 be structure as a whole with circuit.Therefore the heat that chip and components and parts produce finally can be delivered to circuit and cover thermal hole 303 on copper face 302, is conducted heat to the opposite side of circuit board, namely near the side of negative pole cap by thermal hole 303.Fig. 3 b is the fractionation structural representation according to making active materials for use in secondary electrochemical cells second embodiment of the present invention.As can be seen from Fig. 3 b, the circuit board 305 that the edge of negative pole cap 304 is in contact with it carries out scolding tin connection in both contacts site 306.Preferably, the shape of contact site is " C " type ring-type.Same, the circuit board near negative pole cap side have to away from radiator structure corresponding on the circuit board of negative pole cap side, namely metal substrate 301 ', circuit cover copper face 302 '.The metal substrate 301 of thermal hole 303 connection circuit plate both sides and 301 ', circuit covers copper face 302 and 302 '.Meanwhile, the circuit on the circuit board of negative pole cap side covers copper face 302 ' and is connected with the contact site 306 of negative pole cap and circuit board.Like this, the heat produced during chip operation away from negative pole cap side just can transmit in the following manner: metal substrate 301-circuit covers contact site 306-negative pole cap that copper face 302-thermal hole 303-circuit covers copper face 302 '-negative pole cap and circuit board.Contact site 306-negative pole cap that the heat that chip near negative pole cap side produces directly can cover copper face 302 '-negative pole cap and circuit board by metal substrate 301 '-circuit is delivered to the external world.Preferably, the material of thermal hole 303 is copper plated material, and as shown in Figure 3 c, the chip of heating and the heat of electronic devices and components can be transmitted to the opposite side of circuit board by thermal hole 303, thus pass to negative pole cap.
Fig. 4 is the three-dimensional exploded view of the seal body accessory 400 for electrochemical cell of third embodiment of the invention.Described seal body accessory 400 comprises a PCB 401, the 2nd PCB 402 and negative pole cap 403.Wherein a PCB 401 and the 2nd PCB 402 is furnished with multiple circuit components.The edge of a PCB 401 and the 2nd PCB 402 is provided with multiple aperture 404, for being fixed together by a PCB 401 and the 2nd PCB 402.Preferably, side corresponding negative pole cap 403 marginal position that 2nd PCB 402 connects negative pole cap 403 has at least two draw-in grooves 405 (not shown), the edge of negative pole cap 403 then has the dop 406 corresponding with described draw-in groove 405, for negative pole cap 403 is fixed on the 2nd PCB 402, and electrical connection and thermo-contact can be realized.2nd PCB 402 is furnished with quoit 501 (as shown in Figure 5) with the contact site of negative pole cap 403, and negative pole cap 403 coordinates with quoit 501 effect can playing electro-magnetic shielding cover.The material of described negative pole cap 403 is metal, and the heat produced when the components and parts on circuit board can be worked derives outside batteries by draw-in groove 405 and the contact of dop 406, plays the effect of heat radiation.
Seal body accessory structure for electrochemical cell design of the present invention is rationally ingenious; at described electrochemical cell electrode sealing part, there is electrode cap; described electrode cap can coordinate with circuit board and forms shielding construction; its internal high frequency components and parts interference to external world can be stoped; and the heat conduction produced when circuit board can be worked is to extraneous, plays the effect of protective circuit plate and components and parts.In addition, described battery container corresponds to and between battery core and circuit board, is furnished with circle line structure, for locating the relative position of battery core and circuit board, and coordinate with the insulating washer between electrode cap and battery container circuit board is fixed, and without any need for welding.
In conjunction with the explanation of the present invention disclosed here and practice, other embodiments of the present invention are all easy to expect and understand for those skilled in the art.Illustrate and embodiment be only considered to exemplary, true scope of the present invention and purport limited by claim.
Claims (12)
1. have a making active materials for use in secondary electrochemical cells seal body for encapsulation type chip cooling structure, described seal body is used for the peristome of the battery container closing described making active materials for use in secondary electrochemical cells, and wherein said seal body comprises: negative pole cap, circuit board module and insulating washer,
Described battery container has the circle line structure of depression in its one end near described negative pole cap;
Described circuit board module is between described circle line and described negative pole cap, which is provided with multiple electronic component and for carrying out heat conducting heat conduction wiring for during the work of described electronic component, the diameter of described circuit board module is set between the internal diameter and the internal diameter of battery container of the depression of described circle line formation, thus be stuck in described circle line side for closing the peristome of described battery container, described circuit board module is connected by Heat Conduction Material with described negative pole cap, for respectively with described negative pole cap and connect up with described heat conduction and carry out thermo-contact;
The cross section of described insulating washer is
shape, is arranged in the space of described battery container, circuit board module and negative pole cap, and extruding permanent circuit plate module between described circle line and battery container, and isolates described battery container and described negative pole cap.
2. making active materials for use in secondary electrochemical cells seal body according to claim 1, for scolding tin is connected between wherein said circuit board module with described negative pole cap.
3. making active materials for use in secondary electrochemical cells seal body according to claim 2, the both sides of wherein said circuit board module have metal substrate and circuit covers copper face, described circuit covers on copper face and is provided with at least one thermal hole, for heat is directed at side near negative pole cap from described circuit board away from the side of described negative pole cap, wherein
Described metal substrate connects the electronic component that can produce heat and described circuit covers copper face,
Cover copper face near the circuit of negative pole cap side and be connected to the position that described circuit board module contacts with negative pole cap.
4. making active materials for use in secondary electrochemical cells seal body according to claim 3, wherein said circuit board module is " C " type ring-type with the shape at the position that described negative pole cap contacts.
5. making active materials for use in secondary electrochemical cells seal body according to claim 1, the opposite side of wherein said negative pole cap relative to described circle line is provided with draw-in groove, the quantity of described draw-in groove is at least two, for clamping also fixing described negative pole cap, is provided with heat radiation material layer in described draw-in groove.
6. electrochemical cell according to claim 5, the edge of wherein said negative pole cap is provided with the dop corresponding with the position of described draw-in groove, for described negative pole cap is fixed on described circuit board module.
7. making active materials for use in secondary electrochemical cells seal body according to claim 1, wherein said negative pole cap is made up of Heat Conduction Material.
8. making active materials for use in secondary electrochemical cells seal body according to claim 1, wherein said battery container is the box hat of cylinder or rectangular structure.
9. making active materials for use in secondary electrochemical cells seal body according to claim 1, wherein said insulating washer is a flexibility and elastic ring insulating blanket.
10. making active materials for use in secondary electrochemical cells seal body according to claim 1, wherein said
the part of insulating washer for extruding permanent circuit plate module between described circle line and battery container, another part is for isolating described battery container and described negative pole cap.
11. electrochemical cells according to claim 1, wherein said circle line is 0.2-1.2mm relative to the cup depth of battery casing surface.
12. 1 kinds of making active materials for use in secondary electrochemical cells comprising battery seal body as claimed in claim 1, described seal body is used for the peristome of the battery container closing described making active materials for use in secondary electrochemical cells, and described battery also comprises battery core and positive electrode cap, wherein,
Described positive electrode cap and described battery container connect and compose the positive pole of described secondary cell;
Described battery core is positioned in described battery container, between described positive electrode cap and described circle line structure.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510321485.9A CN104900819B (en) | 2015-06-12 | 2015-06-12 | Secondary electrochemical battery sealing body with encapsulated type chip heat dissipation structure and battery |
| PCT/CN2015/096612 WO2016197567A1 (en) | 2015-06-12 | 2015-12-08 | Secondary electrochemical battery sealer body having packaged chip heat dissipation structure and battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510321485.9A CN104900819B (en) | 2015-06-12 | 2015-06-12 | Secondary electrochemical battery sealing body with encapsulated type chip heat dissipation structure and battery |
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| CN104900819A true CN104900819A (en) | 2015-09-09 |
| CN104900819B CN104900819B (en) | 2017-02-15 |
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| WO2016197567A1 (en) * | 2015-06-12 | 2016-12-15 | 福建南平南孚电池有限公司 | Secondary electrochemical battery sealer body having packaged chip heat dissipation structure and battery |
| CN107681068A (en) * | 2017-11-06 | 2018-02-09 | 惠州亿纬锂能股份有限公司 | Rechargeable battery with integrated battery core |
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