CN201946698U - Lithium ion battery - Google Patents
Lithium ion battery Download PDFInfo
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- CN201946698U CN201946698U CN2010206576290U CN201020657629U CN201946698U CN 201946698 U CN201946698 U CN 201946698U CN 2010206576290 U CN2010206576290 U CN 2010206576290U CN 201020657629 U CN201020657629 U CN 201020657629U CN 201946698 U CN201946698 U CN 201946698U
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- protection circuit
- wiring board
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- 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
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Abstract
The utility model provides a lithium ion battery, which comprises a shell with an opening arranged at the upper end, an electrode core stored in the shell and a cover plate assembly arranged at the opening end of the shell. The cover plate assembly comprises a cover plate serving as a first electrode, a rivet serving as a second electrode insulated with a cover body and a protective circuit board. The protective circuit board is arranged between the cover plate and the electrode core, a separating ring is arranged between the protective circuit board and the cover plate, and an insulation layer is arranged between the protective circuit board and the electrode core. A surface of an upper end of the electrode core is provided with a first electrode lug and a second electrode lug. The first electrode lug is connected with the cover plate, and the second electrode lug penetrates through the insulation layer to be connected with the protective circuit board. The rivet penetrates through the separating ring to be connected with the protective circuit board, and the rivet is electrically connected with the second electrode lug through the protective circuit board. Compared with the prior art, the lithium ion battery does not need to be sealed for the second time, is simple in structure, and effectively saves the battery volume.
Description
Technical field
The utility model relates to the battery technology field, relates in particular to a kind of lithium ion battery.
Background technology
Lithium ion battery has obtained application more and more widely in recent years as high power capacity, high-output power, safety, environmental protection, free of contamination rechargeable battery in electronic equipment, and becomes the standard configuration of electronic equipments such as mobile phone.
Existing lithium ion battery is generally by after reeling positive plate, barrier film, negative plate or being stacked to pole piece, and pole piece is put into the cavity that battery container and cover plate form, and the inner electrolyte that injects makes after step such as sealing, change into.But in actual applications, need that also lithium ion battery is carried out the secondary encapsulation and just can become the truly battery of safety, for example: need the protection circuit plate be installed in the end of battery and just can be used for powering load, thereby prevent the overcharging of battery, cross put, factors such as short circuit cause adverse effect to battery, play the effect of protection battery, and described protection circuit plate need be fixed by structures such as top cover, supports; Above-mentioned packaging process complexity needs extra some parts of increase, and takies the effective volume of battery.
CN201374361 discloses a kind of lithium ion battery; comprise pole piece, top cover, protection circuit plate and support; top cover is arranged on the support; the protection circuit plate is arranged between top cover and the support; support offers first installing hole; the end of pole piece has cover plate, offers second installing hole that communicates with first installing hole on the cover plate, and support is arranged in first, second installing hole internal fixation on pole piece by a connection piece.During encapsulation, connector is arranged in first, second installing hole, and support is fixed on the pole piece, again top cover and protection circuit plate are arranged on the support, thus the encapsulation of realization lithium ion battery.The encapsulating structure of this kind lithium ion battery is reliable, but because the installation of protection circuit plate need be provided with support in addition and top cover carries out the secondary encapsulation, complex structure, and take the more effective volume of battery.
Be understandable that the statement of this part only provides the background information relevant with the utility model, may constitute or not constitute so-called prior art.
The utility model content
The utility model is intended to solve lithium ion battery of the prior art need carry out the secondary encapsulation, and the encapsulating structure complexity takies the bigger defective of volume.
In order to solve the problems of the technologies described above, the utility model provides a kind of lithium ion battery, comprise: the shell of upper end open, be contained in pole piece in the described shell and the cover plate assembly that is installed on the openend of described shell, described cover plate assembly comprises the rivet of conduct second electrode that is provided with as the cover plate of first electrode and with the insulation of described cover plate, wherein: described cover plate assembly also comprises the protection circuit plate, described protection circuit plate is between cover plate and pole piece, be provided with spacer ring between protection circuit plate and the cover plate, be provided with insulating barrier between protection circuit plate and the pole piece;
Lead to first lug and second lug on the described pole piece; described first lug is connected with described cover plate; described second lug passes insulating barrier and is connected with the second electrode input of protection circuit plate; described rivet passes spacer ring and is connected with second electrode output of protection circuit plate, and described second lug is electrically connected with described rivet by described protection circuit plate.
In described lithium ion battery, three pins that described protection circuit plate comprises the wiring board body and connects described wiring board body, described three pins are respectively B+ pin, B-pin, P-pin; The upper surface of described wiring board body is provided with integrated IC module and MOS switch module; Described B-pin is the described second electrode input, described P-pin is described second electrode output, described MOS switch module is electrically connected between B-pin, the P-pin, described B+ pin is connected with described cover plate as the first electrode power supply end, and described IC module is electrically connected between B+ pin, the B-pin.
In described lithium ion battery, the lower surface of described cover plate is provided with groove, and described wiring board body places described groove.
In described lithium ion battery, the thickness of described wiring board body is greater than the thickness of described three pins, the lower surface of the lower surface of wiring board body and three pins is positioned at same horizontal plane, and the upper surface of wiring board body exceeds three pins and is contained in the described groove.
In described lithium ion battery, described spacer ring is connected with cover plate, and its middle part is provided with protuberance, and described protuberance places the groove of cover plate, and its side towards the protection circuit plate is formed with storage tank, and described wiring board body places in the described storage tank.
In described lithium ion battery; described insulating barrier is a glue-line; described glue-line is coated on the lower surface and the periphery of described protection circuit plate, described protection circuit plate be adhered on the spacer ring and described wiring board body be sealed in the insulating space of glue-line and groove formation.
In described lithium ion battery, the extension of the right side of described wiring board body is provided with described B-pin, and described second lug passes the lower surface that insulating barrier is welded to described B-pin.
In described lithium ion battery, the extension of the left side of described wiring board body is provided with described P-pin, and described P-pin is provided with connecting hole, and described rivet passes spacer ring and is inserted in the described connecting hole.
In described lithium ion battery, described cover plate is provided with rivet hole; The left side of described spacer ring is provided with cushion block, and the middle part of cushion block is provided with through hole, and cushion block is installed in the described rivet hole, and its upper end is exposed cover plate and is provided with mounting groove in the upper surface; Described rivet is inserted in the through hole of described cushion block, and rivet is made up of with the nail body that is connected the head of a nail the head of a nail, and the described head of a nail places the mounting groove of cushion block, and described nail body passes cushion block and is electrically connected with described P-pin.
In described lithium ion battery, the front side of described wiring board body is protruded described B+ pin is set, and described B+ pin welds mutually with the lower surface of described cover plate.
Compared with prior art; the utility model is by being located at the protection circuit plate inboard of cover plate; by structure and circuit setting; make lithium ion battery of the present utility model when realizing existing power supply and defencive function; need not to carry out the secondary encapsulation; simplified assembly technology, and simple and reasonable, effectively utilized the volume of battery space.
Description of drawings
Fig. 1 is the decomposing schematic representation of the lithium ion battery of the utility model preferred embodiment.
Fig. 2 is the combination schematic diagram of lithium ion battery shown in Figure 1.
Fig. 3 is the partial sectional view of Fig. 2.
Fig. 4 is the schematic diagram of another angle of the cover plate assembly among Fig. 1.
Fig. 5 is the combination schematic diagram of cover plate assembly shown in Figure 4.
Fig. 6 is the circuit theory diagrams of the protection circuit plate among Fig. 1.
Embodiment
In order to make technical problem to be solved in the utility model, technical scheme and beneficial effect clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Consult Fig. 1 and Fig. 2, the lithium ion battery of the utility model preferred embodiment comprises: the shell 1 of an end opening, be contained in pole piece 2 in the described shell 1 and the cover plate assembly that is installed on the openend of described shell 1.
Wherein, described shell 1 is an aluminum hull, be used to place pole piece 2 and hold electrolyte, and its at least one end opening, in the present embodiment, its upper end open 11 is used for the mounting cover board component.
Described pole piece 2 is stacked successively or reel and to form by positive plate, barrier film, negative plate, and the structure of pole piece 2 and manufacture method can be passed through existing techniques in realizing, do not do at this and give unnecessary details.
Improvements of the present utility model mainly are cover plate assembly; the rivet 3 of conduct second electrode that described cover plate assembly comprises cover plate 4 as first electrode, be provided with cover plate 4 insulation and the protection circuit plate 6 that is installed on cover plate 4 inboards (near a side of pole piece 2); need to prove; when first electrode is positive pole; second electrode is negative pole accordingly; otherwise; when first electrode is negative pole; second electrode is anodal accordingly; in the present embodiment, be that positive pole describes with first electrode.
In the prior art, the formed space of cover plate and shell is used to hold described pole piece and electrolyte, cover plate and two electrodes of drawing as pole piece respectively with the rivet that described cover plate insulation is provided with.Manufacturing process is as follows: offer liquid injection hole and rivet hole on the cover plate of first one-step forming, insulating barrier or insulating part are set in rivet hole earlier, then rivet is inserted in the hole of described insulating part or insulating barrier, it is non-electric-connecting that rivet and cover plate are realized as two electrodes of pole piece, and this has been conventionally known to one of skill in the art.It needs to be noted; in order to prevent that overcharging from appearring in battery, abnormal conditions such as mistake is put, short circuit; usually the protection circuit plate need be set; in the prior art; the protection circuit plate places the outside (away from a side of pole piece) of cover plate; generally install by support and/or end cap; be used to realize defencive function; yet; the shortcoming of this structure need to be the secondary encapsulation (once to be encapsulated as cover plate, rivet are installed; secondary is encapsulated as installs protection circuit plate, support, end cap etc.), the mounting structure complexity, it is bigger to take volume.
In the utility model; though the structure of cover plate 4 and rivet 3 and effect thereof are similar to prior art; but; protection circuit plate 6 places the inboard of cover plate 4, by structure and circuit setting, makes lithium ion battery of the present utility model when realizing existing power supply and defencive function; need not the secondary encapsulation; simplified assembly technology, and simple and reasonable, effectively utilized the volume of battery space.
Below two aspects are set and in conjunction with describing in detail with regard to structure of the present utility model and circuit:
On structure is provided with, as Figure 1-3, described protection circuit plate 6 between cover plate 4 and pole piece 2, three pins 61,62,63 that described protection circuit plate 6 comprises wiring board body 60 and connects described wiring board body 60; Described wiring board body 60 is provided with described cover plate 4, pole piece 2 insulation.In the present embodiment, described cover plate assembly further comprises spacer ring 5 and glue-line 7, and described spacer ring 5 is located between protection circuit plate 6 and the cover plate 4, and the setting by spacer ring 5 makes wiring board body 60 and cover plate 4 insulation; Described glue-line 7 is located at the opposite side of protection circuit plate 6 with respect to cover plate 4, and the setting by glue-line 7 makes wiring board body 60 and pole piece 2 insulation.
And, leading to anode ear 21 and negative electrode lug 22 on the described pole piece 2, described anode ear 21 welds mutually with described cover plate 4, so that described cover plate 4 is powered to external loading (not shown) as anodal; Described negative electrode lug 22 passes glue-line 7 and is connected with the negative input (pin 61) of protection circuit plate 6; described rivet 3 passes spacer ring 5 and is connected with the cathode output end (pin 62) of protection circuit plate 6; described negative electrode lug 22 is electrically connected with described rivet 3 by the setting of described protection circuit plate 6; so that described rivet 3 as negative pole to external loading; for example, power to charger or electrical appliance (not shown).
Specifically, as Fig. 1 and shown in Figure 4, three pins 61,62,63 that described protection circuit plate 6 comprises wiring board body 60 and connects described wiring board body 60; Described wiring board body 60 comprises integrated IC module and MOS switch module (consulting Fig. 7), and the electronic component of described integrated IC module and MOS switch module is located at the upper surface of wiring board body 60.Because the thickness of wiring board body is greater than the thickness of pin, in general, the thickness of described wiring board body is 1mm-1.5mm, and the thickness of pin is 0.2mm-0.5mm.Thereby for protection circuit plate 6 better is installed on cover plate 4, the lower surface of described cover plate 4 is provided with groove 43 corresponding to wiring board body 60; The lower surface of the lower surface of wiring board body 60 and three pins is positioned at same horizontal plane; and the upper end of wiring board body 60 (described upper end exceeds the part of three pins for the wiring board body) is contained in the described groove 43; thereby can protect IC module and the MOS switch module of being located at wiring board body 60 upper surfaces effectively, and can save installing space effectively.
Consult Fig. 1, Fig. 4, Fig. 5; described cover plate 4 is a metallic conductor, and in the present embodiment, described cover plate 4 is the aluminum metal part; in order to guarantee that wiring board body 60 and cover plate 4 insulation are provided with, and need install the spacer ring 5 with insulation property between protection circuit plate 6 and cover plate 4.In preferred embodiment of the present utility model, described spacer ring 5 is the insulation plastic parts, can be one-body molded with described cover plate 4.During making; cover plate after the moulding 4 is placed mould; by the described spacer ring 5 of Shooting Technique moulding; the middle part of described spacer ring 5 is provided with protuberance 51 corresponding to the groove on the cover plate 4 43; described protuberance 51 places the groove 43 of cover plate 4; its side towards protection circuit plate 6 is formed with storage tank 511, and the upper end of described wiring board body 60 places in the storage tank 511, and the pin 63 that wiring board body 60 front sides protrude to be provided with exposes the lower surface of storage tank 511 and lid 4 and connects.
Consult Fig. 1, Fig. 4 and Fig. 5, described cover plate 4 is provided with and is used to the liquid injection hole 42 the rivet hole 41 of rivet 3 being installed and being used to inject electrolyte, in order to guarantee rivet 3 and cover plate 4 insulation, need in rivet hole 41, insulating part be set, then rivet is inserted in the hole of described insulating part, this structure of cover plate form is known to those skilled in the art.In the utility model, described insulating part is a spacer ring 5, the left side of spacer ring 5 is provided with cushion block 52 corresponding to described rivet hole 41, the middle part of described cushion block 52 is provided with through hole 521, described cushion block 52 is installed in the described rivet hole 41, described rivet 3 is inserted in the described cushion block 52, and the lower end of rivet 3 is exposed cushion block 52 and is connected with pin 62 (cathode output end).More particularly, in the present embodiment, described rivet 3 comprises the head of a nail 31 and nail body 32, the upper end of described rivet hole 41 is provided with slotted eye 411, the upper end of described cushion block 52 is installed in the hole slot 411 and exposes cover plate 4, the upper surface of cushion block 52 is provided with the mounting groove 522 that is used to place the described head of a nail 31, the head of a nail 31 of described rivet 3 places the mounting groove 522 of described cushion block 52, the upper surface of the head of a nail 31 is exposed cushion block 52 and is used for external load, and the through hole 521 that the lower end of nail body 32 passes cushion block 52 is connected with pin 62 (cathode output end).
Certainly, the structure of above-mentioned spacer ring is the optimal way of present embodiment, is understandable that, described spacer ring can be not one-body molded with cover plate, but is installed on the cover plate again after the moulding separately; In addition; described spacer ring can be the split setting; for example; the moulding separately of cushion block on the described spacer ring; during installation, earlier cushion block is installed in the hole slot of cover plate, is installed on again in the through hole of offering in the spacer ring left side; in a word, can play the form that is provided with of the spacer ring that makes rivet and cover plate insulation, protection circuit plate and cover plate insulating effect all applicable to the utility model.What deserves to be mentioned is, because the size of described cushion block 52 upper ends is greater than the size of rivet hole 41, thereby, spacer ring 5 can be fixed on the cover plate 4 by being provided with of cushion block 52.
Fixing and the protection circuit plate 6 of described protection circuit plate 6 is realized by being provided with of glue-line 7 with the insulation of pole piece 2.Certainly; in the utility model; also dividing plate 23 (consulting Fig. 3) can be set further between protection circuit plate 6 and pole piece 2; realize the insulation between protection circuit plate 6 and the pole piece 2; but; owing to will inevitably reserve the gap of drawing positive and negative lug 21,22 on the dividing plate 23; thereby; the electrolyte that is contained in the shell 1 might corrode protection circuit plate 6; cause the IC module on the protection circuit plate 6, the damage of MOS switch module, the setting of glue-line 7 can effectively prevent the damage of protection circuit plate.Described glue-line 7 forms after by the insulating cement water cure; in order to make glue-line 7 play fixedly protection circuit plate 6; and the IC module on the protection circuit plate body 60; the effect of MOS switch module; insulation glue can be coated on the lower surface of protection circuit plate 6; and periphery; make the glue-line 7 that solidifies back formation that described protection circuit plate 6 is coated and is adhered on the described spacer ring 5; thereby protection circuit plate 6 is fixed on the spacer ring 5; and because the upper end of wiring board body 60 is contained in the groove 43; the IC module; the MOS switch module all is located at the upper surface of protection circuit plate 60; thereby the setting by described glue-line 7; can be with the IC module of wiring board body 60 upper surfaces; the MOS switch module is sealed in the insulating space of glue-line 7 and groove 43 formation; avoid electrolyte to touch the IC module; the MOS switch module plays preferable protective effect.
The form that is provided with of above-mentioned glue-line only is optimal way; be understandable that; protection circuit plate and pole piece can be isolated; and prevent that the form that is provided with that electronic component on the protection circuit plate touches the insulating barrier of electrolyte all can be used for the utility model, is not limited to the form that above-mentioned coating insulation glue forms glue-line.
On circuit is provided with, as mentioned above, three pins 61,62,63 that described protection circuit plate 6 comprises wiring board body 60 and connects described wiring board body 60; Described wiring board body 60 comprises integrated IC module and MOS switch module.Consult Fig. 6, described pin 61 is the B-pin, and pin 62 is the P-pin, and pin 63 is the B+ pin.
Specifically, as Fig. 1 and shown in Figure 5, described B-pin 61 extends setting from wiring board body 60 right sides, and B-pin 61 is a negative input, and the negative electrode lug 22 of described pole piece 2 passes the lower surface that glue-line 7 is welded in B-pin 61; Described P-pin 62 extends setting from the left side of wiring board body 60, described P-pin 62 is a cathode output end, P-pin 62 is provided with connecting hole 621, the nail body 32 of described rivet 3 passes spacer ring 5 and is inserted in this connecting hole 621, and described MOS switch module is electrically connected between B-pin 61, the P-pin 62, when described MOS switch opens, connect B-pin 61 and P-pin 62, so that described rivet 3 is powered to external equipment as negative pole.
As Fig. 1 and shown in Figure 5, described B+ pin 63 protrudes from the front side of wiring board body 60 and is provided with, B+ pin 63 is as the anodal feeder ear that the IC module is powered, be welded in the lower surface of cover plate 4, with to described IC module for power supply, and B+ pin 63 can play the auxiliary fixedly effect of protection circuit plate 6 with the welding of cover plate 4; Described IC module is electrically connected between B+ pin 63, the B-pin 61, detects the voltage between anodal feeder ear B+ pin 63 and the negative input B-pin 61, and occurs outputing signal to the MOS switch module when unusual at voltage.
In the utility model; protection circuit plate 6 has the defencive function of abnormal conditions such as preventing over-charging of battery, mistake are put, overcurrent, short circuit; mainly be by the voltage between IC module detection B+ pin 63 and the B-pin 61; under abnormal conditions; the IC module output signal is given the MOS switch module, and the connection that disconnects between B-pin 61 and the P-pin 62 by the MOS switch realizes defencive function.Concrete circuit structure can adopt any circuit structure that can realize this defencive function; in the utility model; the main feature of circuit structure is IC module and MOS switch module for becoming one, and only is provided with three pins, i.e. B+ pin 63, B-pin 61 and P-pin 62.Preferred implementation of the present utility model can be consulted Fig. 6, described IC module is electrically connected between B+ pin 63, the B-pin 61, described MOS switch module is electrically connected between B-pin 61, the P-pin 62, under normal circumstances, described MOS switch is in opening, connect B-pin 61 and P-pin 62, so that rivet 3 is powered to external equipment as negative pole; When the IC module detects voltage between B+ pin 63, the B-pin 61 unusual (for example: over-charging of battery, cross put, under the situations such as overcurrent, short circuit, magnitude of voltage and current value can occur unusually), IC module output signal control MOS switch cuts out, disconnect being connected between B-pin 61 and the P-pin 62, thereby interruption rivet 3 is as the power supply of negative pole to external equipment.
Be understandable that the circuit setting of protection circuit plate is not limited to circuit setting shown in Figure 6, can realize defencive function and the circuit setting of the protection circuit plate that can adapt with structure setting of the present utility model, all can be used for the utility model.
As shown in Figure 6, when assembling cover plate assembly of the present utility model, when 1), cover plate 4 is formed in one with spacer ring 5, cover plate 4 is connected with spacer ring 5, even cover plate 4 and spacer ring 5 independent moulding, because the upper end size of the cushion block 52 of spacer ring 5 is greater than the size of rivet hole 41, cushion block 52 also can be fixedlyed connected described spacer ring 5 with cover plate 4; 2), the wiring board body 60 of protection circuit plate 6 is placed the storage tank 511 of spacer ring 5; 3) rivet 3 is inserted the through hole 521 of cushion blocks 52, the head of a nail 31 of rivet 3 places the mounting groove 522 of cushion block 52, and the lower end of nail body 32 is passed in the connecting hole 621 of P-pin 62 that through hole 521 is plugged in protection circuit plate 6; 4), the B+ pin 63 that protection circuit plate 6 front sides are protruded is welded in the lower surface of cover plate 4; 5) in the lower surface of protection circuit plate 6 and the periphery of protection circuit plate 6 (being the side of protection circuit plate 6 and the junction of spacer ring 5) apply insulation glue; solidify the back and form glue-line 7; described glue-line 7 is fixed in described protection circuit plate 6 on the spacer ring 5, thereby fixedlys connected with cover plate 4 by spacer ring 5.
Consult Fig. 1, assembling is during entire lithium ion battery, 1), described pole piece 2 is inserted in the described shell 1; With openend relative assemble of the cover plate assembly after the above-mentioned assembling with described shell 1, the anode ear 21 that to draw from pole piece 2 upper ends welds mutually with cover plate 4, and the negative electrode lug 22 that will draw from pole piece 2 upper ends passes the lower surface that glue-line 7 is welded to the B-pin 61 of protection circuit plate 6; 2), cover plate assembly is installed on shell 1 after, can finish the installation of lithium ion battery by liquid injection hole 42 fluid injection in described shell 1 on the cover plate 4.
During use; the positive and negative electrode that the positive and negative electrode of external load is connected lithium ion battery respectively; for example; the positive and negative electrode of charger or electrical appliance is connected with rivet with the cover plate of lithium ion battery respectively, can be to charger or electrical appliance power supply, when abnormal conditions appear in lithium ion battery; for example: over-charging of battery, cross put, when overcurrent, short circuit; the protection circuit plate works, and rivet stops the negative pole power supply, plays the effect of protection lithium ion battery and external load.
In sum; the utility model is by being located at the protection circuit plate inboard of cover plate; by structure and circuit setting; make lithium ion battery of the present utility model when realizing existing power supply and defencive function; need not to carry out the secondary encapsulation; simplify assembly technology, and simple and reasonable, effectively utilized the volume of battery space.
Be to be understood that, in this article, " on ", relative bearing term such as D score, " left side ", " right side ", " front side ", each assembly and the relative position of part in the decomposing schematic representation of lithium ion battery shown in Figure 1 thereof in the expression cover assembly are so that be described each assembly and part thereof; But and be not used in these assemblies and part thereof actual installation and the position relation in lithium ion battery limited.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (10)
1. lithium ion battery, comprise: the shell of upper end open, be contained in pole piece in the described shell and the cover plate assembly that is installed on the openend of described shell, described cover plate assembly comprises the rivet of conduct second electrode that is provided with as the cover plate of first electrode and with the insulation of described cover plate, it is characterized in that: described cover plate assembly also comprises the protection circuit plate, described protection circuit plate is between cover plate and pole piece, be provided with spacer ring between protection circuit plate and the cover plate, be provided with insulating barrier between protection circuit plate and the pole piece;
Lead to first lug and second lug on the described pole piece; described first lug is connected with described cover plate; described second lug passes insulating barrier and is connected with the second electrode input of protection circuit plate; described rivet passes spacer ring and is connected with second electrode output of protection circuit plate, and described second lug is electrically connected with described rivet by described protection circuit plate.
2. lithium ion battery as claimed in claim 1 is characterized in that: three pins that described protection circuit plate comprises the wiring board body and connects described wiring board body, and described three pins are respectively B+ pin, B-pin, P-pin; The upper surface of described wiring board body is provided with integrated IC module and MOS switch module; Described B-pin is the described second electrode input, described P-pin is described second electrode output, described MOS switch module is electrically connected between B-pin, the P-pin, described B+ pin is connected with described cover plate as the first electrode power supply end, and described IC module is electrically connected between B+ pin, the B-pin.
3. lithium ion battery as claimed in claim 2 is characterized in that: the lower surface of described cover plate is provided with groove, and described wiring board body places described groove.
4. lithium ion battery as claimed in claim 3, it is characterized in that: the thickness of described wiring board body is greater than the thickness of described three pins, the lower surface of the lower surface of wiring board body and described three pins is positioned at same horizontal plane, and the upper surface of wiring board body exceeds three pins and is contained in the described groove.
5. lithium ion battery as claimed in claim 3; it is characterized in that: described spacer ring is connected with cover plate, and its middle part is provided with protuberance, and described protuberance places the groove of cover plate; its side towards the protection circuit plate is formed with storage tank, and described wiring board body places in the described storage tank.
6. as any described lithium ion battery of claim 3-5; it is characterized in that: described insulating barrier is a glue-line; described glue-line is coated on the lower surface and the periphery of described protection circuit plate, described protection circuit plate be adhered on the spacer ring and described wiring board body be sealed in the insulating space of glue-line and groove formation.
7. as any described lithium ion battery of claim 2-5, it is characterized in that: the right side extension of described wiring board body is provided with described B-pin, and described second lug passes the lower surface that insulating barrier is welded to described B-pin.
8. as any described lithium ion battery of claim 2-5, it is characterized in that: the left side extension of described wiring board body is provided with described P-pin, and described P-pin is provided with connecting hole, and described rivet passes spacer ring and is inserted in the described connecting hole.
9. lithium ion battery as claimed in claim 8 is characterized in that: described cover plate is provided with rivet hole; The left side of described spacer ring is provided with cushion block, and the middle part of cushion block is provided with through hole, and cushion block is installed in the described rivet hole, and its upper end is exposed cover plate and is provided with mounting groove in the upper surface; Described rivet is inserted in the through hole of described cushion block, and rivet is made up of with the nail body that is connected the head of a nail the head of a nail, and the described head of a nail places the mounting groove of cushion block, and described nail body passes cushion block and is electrically connected with described P-pin.
10. as any described lithium ion battery of claim 2-5, it is characterized in that: the front side of described wiring board body is protruded described B+ pin is set, and described B+ pin exposes spacer ring and welds mutually with the lower surface of described cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206576290U CN201946698U (en) | 2010-12-10 | 2010-12-10 | Lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206576290U CN201946698U (en) | 2010-12-10 | 2010-12-10 | Lithium ion battery |
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| Publication Number | Publication Date |
|---|---|
| CN201946698U true CN201946698U (en) | 2011-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206576290U Expired - Fee Related CN201946698U (en) | 2010-12-10 | 2010-12-10 | Lithium ion battery |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102569681A (en) * | 2010-12-10 | 2012-07-11 | 比亚迪股份有限公司 | Lithium ion battery |
| WO2023216774A1 (en) * | 2022-05-09 | 2023-11-16 | 比亚迪股份有限公司 | Battery and electronic device |
-
2010
- 2010-12-10 CN CN2010206576290U patent/CN201946698U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102569681A (en) * | 2010-12-10 | 2012-07-11 | 比亚迪股份有限公司 | Lithium ion battery |
| CN102569681B (en) * | 2010-12-10 | 2015-11-25 | 比亚迪股份有限公司 | A kind of lithium ion battery |
| WO2023216774A1 (en) * | 2022-05-09 | 2023-11-16 | 比亚迪股份有限公司 | Battery and electronic device |
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