CN108198968A - For the cap assemblies and battery of battery - Google Patents
For the cap assemblies and battery of battery Download PDFInfo
- Publication number
- CN108198968A CN108198968A CN201810101659.4A CN201810101659A CN108198968A CN 108198968 A CN108198968 A CN 108198968A CN 201810101659 A CN201810101659 A CN 201810101659A CN 108198968 A CN108198968 A CN 108198968A
- Authority
- CN
- China
- Prior art keywords
- battery
- hole
- circuit module
- connecting portion
- protection circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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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 of a single cell or a single battery
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/152—Lids or covers characterised by their shape for cells having curved cross-section, e.g. round or elliptic
-
- 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 of a single cell or a single battery
- H01M50/172—Arrangements of electric connectors penetrating the casing
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
-
- 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
Abstract
The invention discloses a kind of cap assemblies and battery for battery.The cap assemblies include：Cap ontology, cap ontology have through-hole；Circuit module is protected, protection circuit module has conductive via；And cylindricality collector, cylindricality collector includes afflux portion, connecting portion and cylindrical portion, one end of connecting portion is connect with afflux portion, and the other end is connect with cylindrical portion, afflux portion is configured to connect with the anode of battery core or cathode, connecting portion forms sealing in through-hole and with through-hole, and cylindrical portion is pierced by from conductive via, and is electrically connected with conductive via.The structure of the cap assemblies is simple, and can improve the efficiency of assembling of battery.
Description
Technical field
The present invention relates to technology field of energy storage device, more particularly, to a kind of cap assemblies and electricity for battery
Pond.
Background technology
In order to improve the security performance of battery, it is usually provided with protection circuit module (PCM).PCM can be effectively prevented from
Phenomena such as overcharge, overdischarge, short-circuit surge current and external circuit, damages battery.
In existing battery, cap includes conductor piece.The positive and negative electrode of battery core usually passes through conductor and the conductor piece of cap
It is welded to connect.The positive and negative electrode of PCM is welded to connect by the conductor piece of nickel sheet and cap.The positive and negative electrode of PCM connects with external circuit
It connects.Charge and discharge are carried out to battery by the positive and negative electrode of PCM.In the cell, it needs nickel sheet or conducting wire through laser welding
It is electrically connected with the positive and negative electrode of battery and the positive and negative electrode terminal of PCM.For the ease of welding, need first to be welded to nickel sheet
On PCM, to form overall structure, then integrally-built nickel sheet is welded on the conductor piece of cap again.
This connection mode causes the complicated of battery, and assembly process is various, low production efficiency.
Further, since the space of weld job is small, cause welding difficulty big, yield rate is low.
Accordingly, it is desirable to provide a kind of new technical solution, to solve above-mentioned technical problem.
Invention content
It is an object of the present invention to provide a kind of new solutions of the cap assemblies for battery.
According to the first aspect of the invention, a kind of cap assemblies for battery are provided.The cap assemblies include：Cap
Ontology, the cap ontology have through-hole；Circuit module is protected, the protection circuit module has conductive via；And cylindricality
Collector, the cylindricality collector include afflux portion, connecting portion and cylindrical portion, and one end of the connecting portion connects with the afflux portion
It connecing, and the other end is connect with the cylindrical portion, the afflux portion is configured to connect with the anode of battery core or cathode,
The connecting portion forms sealing in the through-hole and with the through-hole, and the cylindrical portion is pierced by from the conductive via, and
It is electrically connected with the conductive via.
Optionally, afflux portion structure in the form of sheets.
Optionally, the afflux portion and the connecting portion are integrally formed.
Optionally, the connecting portion is plugged in together with the cylindrical portion.
Optionally, the connecting portion has hole, on the inner surface in the hole and/or the insertion end of the cylindrical portion it is outer
Temperature-sensitive material is coated on surface, the insertion end of the cylindrical portion is inserted into the hole, to form grafting；Or the connection
Portion has protrusion, and the end face of the cylindrical portion has hole, and the inner surface in the outer surface of the protrusion and/or the hole is coated with
Temperature-sensitive material, the protrusion is inserted into the hole, to form grafting；The temperature-sensitive material is configured in environment temperature
When spending high or too low, the resistance of cylindricality collector can be improved.
Optionally, the cap ontology includes skeleton and flexible seals, and the skeleton includes the through-hole, the flexibility
Sealing element includes ring part, and the ring part is located at least partially in the through-hole, the connecting portion and the ring part mistake
It is full of cooperation, to form sealing.
Optionally, there is notch, when the air pressure inside of the battery is more than to set between the ring part and the connecting portion
During definite value, gas is discharged via the notch.
Optionally, the cylindrical portion and the conductive via of the protection circuit module weld together.
According to another aspect of the present invention, a kind of battery is provided.The battery is carried including housing, battery core and the present invention
The cap assemblies for battery supplied；The battery core is located in the housing, and the cap ontology is fixed on the shell
In the openend of body, the outer edge of the cap ontology is formed with the inner surface of the housing and is sealed, the protection circuit module
Outside the openend of the housing.
Optionally, including two cylindricality collectors, one of them described cylindricality collector respectively with the battery core
Anode and it is described protection circuit module positive conductive via connection, another described cylindricality collector respectively with the battery core
Cathode and it is described protection circuit module negative conductive via connection；It is described or including a cylindricality collector
Positive conductive via of the cylindricality collector respectively with the anode of the battery core and the protection circuit module is connect, the battery
Housing and the cathode of the battery core and the negative terminal of the protection circuit module connect；Alternatively, the cylindricality collector
The negative conductive via with the cathode of the battery core and the protection circuit module is connect respectively, the housing of the battery and institute
State the positive terminal connection of the anode and the protection circuit module of battery core.
According to one embodiment of the disclosure, the afflux portion in cylindricality afflux portion and the positive plate or negative plate of battery core connect
It connects.Connecting portion passes through the through-hole of cap ontology.Cylindrical portion passes through conductive via, and is electrically connected with protection circuit module.In the example
In son, battery core and protection circuit module is directly connected in cylindricality collector, and which simplify electric connection structures.
In addition, cap ontology does not need to the function of having conducting, the structure of cap ontology is simplified, and eliminates battery core
Conductor and cap ontology and cap ontology and the conductor (for example, nickel sheet) of protection circuit module the step of welding.The cap
The use of component simplifies the step of battery assembles, improves production efficiency.
Further, since do not need to the conductor of setting battery core and cap ontology and cap and protection circuit module, therefore can be with
The inner space of battery is saved, and the space of saving is used to improve to the quality of battery core, so as to improve the capacity of battery.
In addition, in this example embodiment, directly protection circuit module is installed on cylindricality collector, and passes through cylindrical portion and lead
Electric via can be welded from the front of protection circuit module, so as to reduce the assembly difficulty of battery, be improved into this way
Product rate.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its
Advantage will become apparent.
Description of the drawings
It is combined in the description and the attached drawing of a part for constitution instruction shows the embodiment of the present invention, and even
With its explanation together principle for explaining the present invention.
Fig. 1 is the exploded view of battery according to an embodiment of the invention.
Fig. 2 is the sectional view of battery according to an embodiment of the invention.
Fig. 3 is the vertical view of protection circuit module according to an embodiment of the invention.
Fig. 4 is the structure diagram of cylindricality collector according to an embodiment of the invention.
Fig. 5 is the structure diagram of cylindrical portion according to an embodiment of the invention.
Fig. 6 is the vertical view in connecting portion and afflux portion according to an embodiment of the invention.
Fig. 7 is the exploded view of cap ontology according to an embodiment of the invention.
Fig. 8 is the exploded view of another battery according to an embodiment of the invention.
Reference sign：
11：Protect circuit module；12：Cap ontology；13：Through-hole；14：Positive conductive via；15：Skeleton；16：It is flexible close
Sealing；17：Insulating trip；18：Cylindricality collector；19：Cylindrical portion；20：Connecting portion；21：Afflux portion；22：Openend；23：Sealing
Glue；24：Negative conductive via；25：Housing；26：Battery core；27：Temperature-sensitive material；28：Hole；29：Stent；30：Ring part；31：
Outline border；32：L-shaped nickel sheet；33：Notch.
Specific embodiment
Carry out the various exemplary embodiments of detailed description of the present invention now with reference to attached drawing.It should be noted that：Unless in addition have
Body illustrates that the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
The range of invention.
It is illustrative to the description only actually of at least one exemplary embodiment below, is never used as to the present invention
And its application or any restrictions that use.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as part of specification.
In shown here and discussion all examples, any occurrence should be construed as merely illustrative, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter represents similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, then in subsequent attached drawing does not need to that it is further discussed.
According to one embodiment of present invention, a kind of cap assemblies for battery are provided.As shown in Figure 1, the cap
Component includes cap ontology 12, protection circuit module 11 and cylindricality collector 18.Cap ontology 12 has through-hole 13.Cap ontology
12 lids are closed in the openend of battery case 25 22.Cap ontology 12 is used for sealed cell.
As shown in figure 3, protection circuit module 11 has conductive via 14,24.Conductive via 14,24 has conducting function
Hole, for example, the surface in hole plates metal, to form plated-through hole.Conductive via 14,24 is protection circuit module 11
Positive terminal or negative terminal.
Protection circuit module 11 is used to protect battery.Battery is by protecting circuit module 11 to be electrically connected with external circuit.Example
Such as, when protection circuit module 11 is put in over-charging of battery, excessively, overloads or is short-circuit, line disconnection or raising resistance can rise in this way
To the effect of protection battery.
In one example, protection circuit module 11 is also integrated with MOS switch, PTC units and NTC units.MOS switch energy
Enough surge current is avoided to damage battery.In charging, discharging electric batteries, temperature is excessively high or too low all battery can be caused to damage
It is bad.In the case where temperature is excessively high, PTC units cut-out circuit, so as to prevent the high temperature of battery from damaging.In the too low situation of temperature
Under, NTC units cut-out circuit, so as to prevent the low temperature of battery from damaging.
As shown in Fig. 1 and Fig. 4-6, cylindricality collector 18 includes afflux portion 21, connecting portion 20 and cylindrical portion 19.Cylindricality collection
Fluid 18 is used to that battery core 26 and protection circuit module 11 to be connected.One end of connecting portion 20 is connect with afflux portion 21, and the other end
It is connect with cylindrical portion 19.For example, afflux portion 21, connecting portion 20 and cylindrical portion 19 are sequentially connected by modes such as grafting, clampings.
Afflux portion 21 is configured to connect with the anode of battery core 26 or cathode.For example, the side for passing through laser welding
Collector is welded on the positive plate or negative plate of battery core 26 by formula.
Connecting portion 20 is located in through-hole 13, and is formed and sealed with through-hole 13.For example, assembling when, by cap ontology 12 from
19 side of cylindrical portion is through the outside of connecting portion 20.Sealing is formed between connecting portion 20 and through-hole 13.Preferably, connecting portion 20
Outer diameter is more than the outer diameter of cylindrical portion 19, in order to seal.
Cylindrical portion 19 is pierced by from conductive via 14,24, and is electrically connected with conductive via 14,24.For example, cylindrical portion 19 is with leading
Electric via 14,24 welds together.For example, soldering and welding.This connection mode causes cylindrical portion 19 and conductive via 14,24
It is electrically connected relatively reliable.
In embodiments of the present invention, the afflux portion 21 in cylindricality afflux portion 21 connects with the positive plate of battery core 26 or negative plate
It connects.Connecting portion 20 passes through the through-hole 13 of cap ontology 12.Cylindrical portion 19 pass through conductive via 14,24, and with protect circuit module
11 electrical connections.In this example embodiment, battery core 26 and protection circuit module 11 is directly connected in cylindricality collector 18, and which simplify be electrically connected
Binding structure.
In addition, cap ontology 12 does not need to the function of having conducting, the structure of cap ontology 12 is simplified, and is eliminated
The conductor of battery core 26 and cap ontology 12 and cap ontology 12 and conductor (for example, nickel sheet) welding of protection circuit module 11
Step.The use of the cap assemblies simplifies the step of battery assembles, improves production efficiency.
Further, since setting battery core 26 and cap ontology 12 and the conductor of cap and protection circuit module 11 are not needed to,
Therefore the inner space of battery can be saved, and the space of saving is used to improve to the quality of battery core 26, so as to improve battery
Capacity.
In addition, in this example embodiment, directly protection circuit module 11 is installed on cylindricality collector 18, and make cylindrical portion 19
Across conductive via 14,24, can be welded in this way from the front of protection circuit module 11, so as to reduce the assembling of battery
Difficulty improves yield rate.
In one example, as shown in figure 4, the structure in the form of sheets of afflux portion 21.Laminated structure has big surface area, can
Effectively improve water catchment efficiency.
Further, since battery core 26 is usually laminated structure, therefore the collector of laminated structure and the connection of battery core 26 can more be held
Easily.
In one example, afflux portion 21 and connecting portion 20 are integrally formed.For example, it by injection molding, strikes out
The modes such as type are integrally formed afflux portion 21 and connecting portion 20.This causes the processing of cylindricality collector 18 to become easy.
In one example, connecting portion 20 is plugged in together with cylindrical portion 19.In this way, connecting portion 20 and cylindricality
The connection in portion 19 becomes easy.For example, it is welded again after forming interference fit or grafting between connecting portion 20 and cylindrical portion 19
The mode connect, so that connecting portion 20 is fixedly connected with cylindrical portion 19.
In one example, as seen in figs. 5-6, connecting portion 20 has hole 28.On the inner surface in hole 28 and/or cylindrical portion
Temperature-sensitive material 27 is coated on the outer surface of 19 insertion end.The insertion end of cylindrical portion 19 is inserted into hole 28, to form grafting.
Connecting portion 20 has protrusion.The end face of cylindrical portion 19 has hole.It is applied in the inner surface in the outer surface of protrusion and/or hole
It is covered with temperature-sensitive material 27.Protrusion inserting hole, to form grafting.
Temperature-sensitive material 27 is configured to, when environment temperature is excessively high or too low, to improve the electricity of cylindricality collector 18
Resistance, to reduce electric current, so as to prevent battery from the phenomenon that overcurrent occur in charge and discharge.
For example, alloy material of temperature-sensitive material 27 including Mo-Co-Ni-Cu etc., the material when environment temperature is excessively high,
The resistance of cylindricality collector 18 can be improved.In general, connection battery core 26 positive plate cylindricality collector 18 fill,
It is easily effected by a temperature increase during electric discharge.The temperature-sensitive material 27 can be coated in 19 He of cylindrical portion of the cylindricality collector 18
On the joint face of connecting portion 20.
Temperature-sensitive material 27 can also be BaTiO3, SnO-SbO etc., which can improve when environment temperature is too low
The resistance of cylindricality collector 18.In general, the cylindricality collector 18 of the negative plate of connection battery core 26 holds in charge and discharge
Easily influenced by temperature reduction.The temperature-sensitive material 27 can be coated in the cylindrical portion 19 of the cylindricality collector 18 and connecting portion 20
Joint face on.
Temperature-sensitive material 27 is not limited to above-mentioned several, and those skilled in the art can be selected according to actual needs.
By coating temperature-sensitive material 27 on the joint face of cylindrical portion 19 and connecting portion 20, battery can be further improved
Security performance.Temperature-sensitive material 27 forms the duplicate protection of battery with protection circuit module 11, in this way, even if one of them
It fails, another also can effectively protect battery.
In one example, as shown in figs. 2 and 7, cap ontology 12 includes skeleton 15 and flexible seals.Skeleton 15 is by hard
Material is made.Skeleton 15 makes cap ontology 12 have enough intensity.Skeleton 15 includes through-hole 13.For example, flexible sealing part
16 entirety structure in the form of sheets.Flexible sealing part 16 fits together with skeleton 15, to keep good sealing effectiveness.It is flexible close
Sealing includes ring part 30.Ring part 30 is located at least partially in through-hole 13.Connecting portion 20 is interference fitted with ring part 30, with
Form sealing.The elasticity of flexible sealing part 16 is high, can closely fit together with connecting portion 20.
For example, include thermoplastic elastomer (TPE) (TPE), thermoplastic polyurethane elastic for manufacturing the material of flexible sealing part 16
Body (TPU), thermoplastic vulcanizates (TPV), thermoplastic polyolefin elastomer (TPO), thermoplastic polyester elastomer (TPEE) etc..
In one example, skeleton 15 includes stent 29 and outline border 31.Stent 29 has through hole.Stent 29 is by metal material
Material is made.The entirety of outline border 31 is cylindrical in shape structure.Outline border 31 includes bottom and side wall.Bottom and side wall connects, to be formed
The cavity of open at one end.Bottom further includes through-hole 13.The wall of through-hole 13 extends into cavity.Stent 29 includes through hole.Stent
In 29 insertion cavitys, and it is fitted in bottom.Through hole is sleeved on the outside of wall.This skeleton have both enough structural strengths and
Good sealing effect.
Outline border 31 is made by hard high molecular material, for example, makrolon (PC), acrylonitrile-butadiene-styrene (ABS)
Copolymer (ABS) etc..The skeleton 15 of composite construction is so that outline border 31 and 25 sealing effect of housing of battery are more preferable.In addition, into
During row slot rolling manufacturing procedure, skeleton 15 has enough intensity, is not susceptible to deform.
Flexible seals are located at the side opposite with cavity of bottom.Ring part 30 is inserted into through-hole 13.Ring part 30 with
Through-hole 13 forms sealing.Cylindricality collector 18 is passed through from ring part 30.Connecting portion 20 is located in ring part 30, and forms interference and match
It closes.
In this example embodiment, by setting different materials in different components so that cap ontology 12 has enough strong
Degree and sealing effect.Specifically, the outline border 31 of cap ontology 12 can form good sealing with housing 25.Stent 29 makes cap
Lid ontology 12 has enough structural strengths.Flexible seals can form good close with outline border 31 and cylindricality collector 18
Envelope.
In one example, as shown in Fig. 2, having notch 33 between ring part 30 and connecting portion 20.When the inside of battery
When air pressure is more than setting value, gas is discharged via notch 33.For example, notch 33 is set around connecting portion 20.Notch 33 makes
The contact area obtained between connecting portion 20 and ring part 30 reduces.For example, when air pressure inside is more than 2 atmospheric pressure, gas warp
It is discharged by notch 33.The setting of notch 33 can effectively prevent cause because the air pressure inside of battery is excessively high battery heave even it is quick-fried
It is fried, so as to improve the security performance of battery.
According to another embodiment of the invention, a kind of battery is provided.As shown in Figs. 1-2, the battery include housing 25,
Battery core 26 and the cap assemblies provided by the present invention for battery.Battery core 26 is located in housing 25.Cap ontology 12 is fixed
In the openend of housing 25 22.The outer edge of cap ontology 12 is formed with the inner surface of housing 25 and is sealed.Protect circuit module
11 are located at outside the openend 22 of housing 25.The shape of battery can be cylindrical, rectangular, elliptical cylinder-shape, semi-cylindrical or its
His polygonal column.
The battery has the characteristics of simple in structure, capacity is high.
In one example, include two cylindricality collectors 18 for the cap assemblies of battery.One of cylindricality afflux
Positive conductive via 14 of the body 18 respectively with the anode of battery core 26 (for example, positive plate) and protection circuit module 11 is connect；Separately
One cylindricality collector 18 respectively with the cathode of battery core 26 (for example, negative plate) and protect circuit module 11 negative conductive mistake
Hole 24 connects.
In this example embodiment, battery includes following number of assembling steps,
S1, two cylindricality collectors 18 are welded to battery core 26 by way of welding (for example, ultrasonic welding)
Positive and negative electrode on piece, and battery core 26 is wound into cylindrical structure or square structure according to the shape of setting.
S2, the battery core 26 after welding is placed into housing 25, and slot rolling is carried out to housing 25, to fix the position of battery core 26
It puts.It should be noted that one end opposite with openend 22 in battery core 26 is provided with fluid sealant and insulating trip, so that battery core
26 insulate with housing 25.
S4, battery core 26 is toasted, and injects electrolyte into housing 25 under vacuum conditions.It is complete in filling electrolyte
Cheng Hou covers insulating trip 17 in battery core 26, so that battery core 26 insulate with housing 25 (22 side of openend).
S5, cap ontology 12 is assembled in openend 22, and makes cylindricality collector 18 across the through-hole 13 of cap.So
Afterwards, it is sealed.In order to make the good seal of cylindricality collector 18 and cap ontology 12, fluid sealant is also filled in through-hole 13
23.The structure described in above-described embodiment may be used in cap ontology 12.
S6, the battery sealed is melted into and partial volume.In formation process, the electrolyte and positive and negative electrode of battery core 26
Piece is connected, so that electrochemical reaction can occur for battery core 26.In partial volume process, the capacity of battery can determine.
S7, multiple batteries sealed are placed on jig.For example, the jig have it is in a row, arranged in rows multiple
Location hole.A battery sealed is inserted into each location hole.The cylindrical portion 19 of aciculiform collector is outwardly.
S8, protection circuit module 11 is placed on the battery sealed, and cylindrical portion 19 is made to pass through conductive via.
S9, the welding that cylindrical portion 19 and conductive via 14,24 are disposably completed using automatic welding machinery arm.
Since the structure of battery is simple, welding sequence is few, therefore can realize the automation of battery, mass production, significantly
Improve production efficiency.
Further, since cylindrical portion 19 and the outside that is welded on of conductive via 14,24 carry out, therefore working space is big, and welding is accurate
Really, high yield rate.
In another example, as shown in figure 8, the cap assemblies for battery include a cylindricality collector 18.Cylindricality
Positive conductive via 14 of the collector 18 respectively with the anode of battery core 26 (for example, positive plate) and protection circuit module 11 connects
It connects.The housing 25 of battery is connect with the cathode (for example, negative plate) of battery core 26 and the negative terminal of protection circuit module 11.It needs
It is noted that negative terminal can be conductive via or the terminal of other structures.
Alternatively, cylindricality collector 18 respectively with the cathode of battery core 26 (for example, negative plate) and protection circuit module 11
Negative conductive via 24 connects.The housing 25 of battery and the anode (for example, positive plate) of battery core 26 and protection circuit module 11
Positive terminal connection.For example, housing 25 is connect by L-shaped nickel sheet 32 with the positive terminal of protection circuit module 11.It needs
Bright, positive terminal can be conductive via or the terminal of other structures.
In this example embodiment, in welding, need by cylindrical portion 19 and conductive via 12,14, L-shaped nickel sheet 32 and housing 25 with
And L-shaped nickel sheet 32 is with protecting the terminal of circuit module 11 to be welded.Since welding position is respectively positioned on the outside of battery, therefore weld
Difficulty is small, high yield rate.
Although some specific embodiments of the present invention are described in detail by example, the skill of this field
Art personnel it should be understood that example above merely to illustrating, the range being not intended to be limiting of the invention.The skill of this field
Art personnel are it should be understood that can without departing from the scope and spirit of the present invention modify to above example.This hair
Bright range is defined by the following claims.
Claims (10)
1. a kind of cap assemblies for battery, which is characterized in that including：
Cap ontology, the cap ontology have through-hole；
Circuit module is protected, the protection circuit module has conductive via；And
Cylindricality collector, the cylindricality collector include afflux portion, connecting portion and cylindrical portion, one end of the connecting portion with it is described
Afflux portion connects, and the other end is connect with the cylindrical portion, the afflux portion be configured to the anode of battery core or
Cathode connects, and the connecting portion is in the through-hole and is formed and seals with the through-hole, and the cylindrical portion is from the conductive mistake
Hole is pierced by, and is electrically connected with the conductive via.
2. the cap assemblies according to claim 1 for battery, which is characterized in that afflux portion structure in the form of sheets.
3. the cap assemblies according to claim 1 for battery, which is characterized in that the afflux portion and the connecting portion
It is integrally formed.
4. the cap assemblies according to claim 1 for battery, which is characterized in that the connecting portion and the cylindrical portion
It is plugged in together.
5. the cap assemblies according to claim 1 for battery, which is characterized in that the connecting portion has hole, in institute
It states on the inner surface in hole and/or temperature-sensitive material is coated on the outer surface of the insertion end of the cylindrical portion, the cylindrical portion
Insertion end is inserted into the hole, to form grafting；Or
The connecting portion has protrusion, and the end face of the cylindrical portion has hole, in the outer surface of the protrusion and/or the hole
Inner surface is coated with temperature-sensitive material, and the protrusion is inserted into the hole, to form grafting；
The temperature-sensitive material is configured to, when environment temperature is excessively high or too low, to improve the electricity of cylindricality collector
Resistance.
6. the cap assemblies according to claim 1 for battery, which is characterized in that the cap ontology include skeleton and
Flexible seals, the skeleton include the through-hole, and the flexible seals include ring part, the ring part it is at least local
In the through-hole, the connecting portion is interference fitted with the ring part, to form sealing.
7. the cap assemblies according to claim 6 for battery, which is characterized in that the ring part and the connecting portion
Between have notch, when the battery air pressure inside be more than setting value when, gas is discharged via the notch.
8. the cap assemblies according to claim 1 for battery, which is characterized in that the cylindrical portion and the protection electricity
The conductive via of road module welds together.
9. a kind of battery, which is characterized in that including housing, battery core and the use as described in any one in claim 1-8
In the cap assemblies of battery；The battery core is located in the housing, and the cap ontology is fixed on the openend of the housing
Interior, the outer edge of the cap ontology is formed with the inner surface of the housing and is sealed, and the protection circuit module is located at the shell
Outside the openend of body.
10. battery according to claim 9, which is characterized in that including two cylindricality collectors, described in one of them
Positive conductive via of the cylindricality collector respectively with the anode of the battery core and the protection circuit module is connect, another institute
Negative conductive via of the cylindricality collector respectively with the cathode of the battery core and the protection circuit module is stated to connect；Or
Including a cylindricality collector, the cylindricality collector respectively with the anode of the battery core and the protection circuit
The positive conductive via connection of module, the housing of the battery and the cathode of the battery core and bearing for the protection circuit module
Extreme son connection；Alternatively, the cylindricality collector respectively with the cathode of the battery core and it is described protection circuit module cathode
Conductive via connects, and the housing of the battery connects with the anode of the battery core and the positive terminal of the protection circuit module
It connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810101659.4A CN108198968A (en) | 2018-02-01 | 2018-02-01 | For the cap assemblies and battery of battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810101659.4A CN108198968A (en) | 2018-02-01 | 2018-02-01 | For the cap assemblies and battery of battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108198968A true CN108198968A (en) | 2018-06-22 |
Family
ID=62591716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810101659.4A Pending CN108198968A (en) | 2018-02-01 | 2018-02-01 | For the cap assemblies and battery of battery |
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| Country | Link |
|---|---|
| CN (1) | CN108198968A (en) |
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