CN206432339U - A kind of lithium battery - Google Patents

Abstract

A kind of lithium battery, including body, the check valve that is arranged at the block of body one end and is fixedly connected with block；Check valve includes a hollow valve body, cover plate, pedestal, baffle plate, the first sealing ring, sealing block, the second sealing ring, push rod and spring；Valve body includes upper end, the lower end away from upper end and the dividing plate in valve body, and the inner space of valve body is divided into the first cavity and the second cavity and opens up the via of the first cavity of connection and the second cavity by dividing plate；Cover plate is fastened in upper end；Base part is contained in lower end and provided with the intercommunicating pore connected with the second cavity；Baffle plate is contained in the first cavity and is resisted against dividing plate；First sealing ring is placed on one end of push rod and is partially housed in via；The second sealing ring is cased with outside sealing block and is connected with the one end of push rod away from the first sealing ring；Sealing block and the second sealing ring are contained in the second cavity and on pedestal；Spring is placed on outside push rod and two ends are in contact with the first sealing ring and sealing block respectively.

Description

A kind of lithium battery

【Technical field】

The utility model is related to cell art, more particularly to a kind of lithium battery.

【Background technology】

Current lithium battery just develops towards high magnification, high-energy-density, and security performance, which turns into, restricts its widely used barrier Hinder.In use, the consumption of electrolyte is very serious for battery, and current lithium battery structure is reserved can fill electrolyte Device, in the case of insufficient electrolyte, cause the decay of later stage electrical property serious.Meanwhile, high power charging-discharging, overcharge and When abuse, lithium battery temperature rise, electrolyte decomposition produces gas, with the increase of gas, and the internal pressure of lithium battery increases Greatly, it may set off an explosion, cause safety problem.

In consideration of it, real be necessary to provide a kind of novel lithium battery to overcome disadvantages described above.

【Utility model content】

The purpose of this utility model be to provide it is a kind of can increase the service life, highly reliable lithium battery.

To achieve these goals, the utility model provides a kind of lithium battery, including body, is arranged at described body one end Block and the check valve that is fixedly connected through the block and with the block；The check valve includes a hollow valve Body, cover plate, pedestal, baffle plate, the first sealing ring, sealing block, the second sealing ring, push rod and spring；The valve body include upper end and Lower end away from the upper end；The valve body also includes the dividing plate being located in the valve body, and the dividing plate is by the valve body Portion space is divided into the first cavity close to the upper end and the second cavity close to the lower end and opens up connection described first The via of cavity and second cavity；The cover plate is fastened in the upper end to close first cavity；The base portion Divide and be contained in the lower end and provided with the intercommunicating pore connected with second cavity；The baffle plate is contained in first cavity simultaneously The dividing plate is resisted against to close the via；First sealing ring is placed on one end of the push rod and is partially housed in described Via；The sealing block overcoat has second sealing ring and is connected with the one end of the push rod away from first sealing ring Connect；The sealing block and second sealing ring are contained in second cavity and are located on the pedestal and the sealing block Close the intercommunicating pore of the pedestal；The spring is located in second cavity and is placed on that the push rod is outer and one end and described the The one sealing ring other end that is in contact is in contact with the sealing block.

In a preferred embodiment, first sealing ring includes being contained in the via and close with the via The resettlement section of contact and the flange formed is protruded out by the resettlement section, first sealing ring offer through the resettlement section and The through hole of the flange；It is opposite in the side of the baffle plate that the flange is resisted against the dividing plate.

In a preferred embodiment, the push rod is cylindrical, and the through hole is the diameter of circular and described through hole More than the diameter of the push rod；One end of the push rod is contained in the through hole and is coaxially disposed with the through hole.

In a preferred embodiment, the sealing block includes main part, distinguishes outside by the two ends of the main part Extend the first chimb and the second chimb formed；Second sealing ring be placed on the main part it is outer and with first chimb and Second chimb is in close contact.

In a preferred embodiment, the main part is cylindric, and first chimb and second chimb are The diameter of circular and described first chimb is more than the diameter of second chimb, and the diameter of second chimb is more than the main body The diameter in portion；Second chimb is located at close to the side of the pedestal；Second sealing ring is in contact with the pedestal.

In a preferred embodiment, one end that the push rod is connected with the sealing block is provided with external screw thread, described close The center for sealing block is provided with corresponding to the push rod external screw thread and through the internal thread of the sealing block, the push rod and the sealing Block is fixedly connected by external screw thread with screw-internal thread fit.

In a preferred embodiment, the pedestal is hollow form and provided with first boss and second boss, it is described under End is in contact with the first boss and is provided with the groove corresponding to the second boss, and the second boss and the groove are close Envelope coordinates.

The lithium battery that the utility model is provided fills electrolyte and discharge lithium battery interior by setting check valve apparatus Gas, reaches the purpose for increasing the service life and improving security.When lithium battery performance declines because electrolyte is reduced, it can add The cycle life of the new electrolyte of note, greatly extension battery；In addition, the excessive gas of lithium battery interior can flexibly be discharged, The a large amount of gases of accumulated inside are avoided, pressure is excessive to cause the phenomenon of blast so as to avoid the occurrence of, and reduces system safety hazards, greatly The security performance of big lifting battery.

【Brief description of the drawings】

A kind of sectional view for lithium battery that Fig. 1 provides for the utility model.

A kind of sectional view of the check valve for lithium battery that Fig. 2 provides for the utility model.

【Embodiment】

In order that the purpose of this utility model, technical scheme and advantageous effects become apparent from understanding, below in conjunction with attached Figure and embodiment, the utility model is further elaborated.It should be appreciated that described in this specification Embodiment is not intended to limit the utility model just for the sake of explaining the utility model.

It refer to Fig. 1, the utility model provides a kind of lithium battery 100, including body 10, be arranged at described one end of body 10 Block 20 and the check valve 30 that is fixedly connected through the block 20 and with the block 20.It is described in present embodiment The quantity of check valve 30 is two, and in other embodiments, the quantity of the check valve 30 can also be one or more.This In embodiment, the lithium battery 100 is cylindric, and the body 10 is cylinder, and the block 20 is circle.

Specifically, refer to Fig. 2, the check valve 30 includes a hollow valve body 31, cover plate 32 and pedestal 33.The valve Body 31 includes upper end 311 and the lower end 312 away from the upper end 311.The valve body 31 also includes being located in the valve body 31 Dividing plate 313, the dividing plate 313 by the inner space of the valve body 31 be divided into close to the upper end 311 the first cavity 314 and Second cavity 315 of the close lower end 312 simultaneously opens up the via for connecting first cavity 314 and second cavity 315 3131.The cover plate 32 is fastened in the upper end 311 to close first cavity 314.The pedestal 33 is partially housed in institute State lower end 312 and provided with the intercommunicating pore 331 connected with second cavity 315.Further, the pedestal 33 is additionally provided with first Boss 332 and second boss 333, the lower end 312 are in contact and convex provided with corresponding to described second with the first boss 332 The groove 3121 of platform 333, the second boss 333 is sealed with the groove 3121 to be coordinated.In present embodiment, the pedestal 33 It is made up of etch-proof insulating materials, the inside of the lithium battery 100 is stretched into through the block 20, not only with the valve body 31 Sealing coordinates, and also acts as the effect for supporting the valve body 31.

Further, the check valve 30 also include baffle plate 34, the first sealing ring 35, sealing block 36, the second sealing ring 37, Push rod 38 and spring 39.The baffle plate 34 is contained in first cavity 314 and to be resisted against the dividing plate 313 described to close Via 3131.First sealing ring 35 is partially housed in the via 3131 and the collecting including being contained in the via 3131 Portion 351 and the flange 352 formed is protruded out by the resettlement section 351, the resettlement section 351 is in close contact with the via 3131, It is opposite in the side of the baffle plate 34 that the flange 352 is resisted against the dividing plate 313.First sealing ring 35 is further opened with passing through Wear the through hole 353 of the resettlement section 351 and the flange 352.The sealing block 36 includes main part 361, by the main part 361 two ends stretch out the first chimb 362 and the second chimb 363 to be formed respectively.Second sealing ring 37 is placed on described Main part 361 is outer and is in close contact with first chimb 362 and second chimb 363.The sealing block 36 and described Two sealing rings 37 are contained in second cavity 315 and on the pedestal 33 and the sealing block 36 closes the pedestal 33 intercommunicating pore 331.In present embodiment, the main part 361 is cylindric, first chimb 362 and described second convex Side 363 is more than the diameter of second chimb 363 for the diameter of circular and described first chimb 362, second chimb 363 Diameter is more than the diameter of the main part 361；Second chimb 363 is located at close to the side of the pedestal 33；Described second Sealing ring 37 is in contact with the pedestal 33.

Further, one end of the push rod 38 is contained in the through hole 353, and the other end is connected with the sealing block 36 Connect.In present embodiment, the push rod 38 is cylindric, and the through hole 353 is more than institute for the diameter of circular and described through hole 353 The diameter of push rod 38 is stated, the push rod 38 is coaxially disposed with the through hole 353.The push rod 38 is connected with the sealing block 36 One end is provided with external screw thread, and the center of the sealing block 36 is provided with corresponding to the external screw thread of push rod 38 and through the sealing block 36 Internal thread.The push rod 38 is fixedly connected with the sealing block 36 by external screw thread with screw-internal thread fit.

Further, the spring 39 is located in second cavity 315 and is placed on outside the push rod 38, and the spring 39 one end is resisted against the other end of sealing block 36 and is resisted against first sealing ring 35.The spring 39 is in compression shape State, the sealing ring 35 of sealing block 36 and first for being pointed to the two ends of spring 39 applies a thrust, makes sealing effectiveness more preferable.

When the internal pressure of the lithium battery 100 is too high, promote described with the pressure differential of second cavity 315 formation Sealing block 36 move to close to the direction of the dividing plate 313, and then drives the push rod 38 to push up to open baffle plate 34, and then described first Pressure in cavity 314 starts increase, finally washes the cover plate 32 open and discharges internal gas.When the lithium battery 100 is needed When adding new electrolyte, open the cover plate 32 and baffle plate 34 and rotation back-outs the push rod 38 and can inject electrolyte.

The lithium battery that the utility model is provided fills electrolyte and discharge lithium battery interior by setting check valve apparatus Gas, reaches the purpose for increasing the service life and improving security.When lithium battery performance declines because electrolyte is reduced, it can add The cycle life of the new electrolyte of note, greatly extension battery；In addition, the excessive gas of lithium battery interior can flexibly be discharged, The a large amount of gases of accumulated inside are avoided, pressure is excessive to cause the phenomenon of blast so as to avoid the occurrence of, and reduces system safety hazards, greatly The security performance of big lifting battery.

The utility model is not restricted to described in specification and embodiment, therefore for the personnel of familiar field For additional advantage and modification is easily achieved, therefore in the universal limited without departing substantially from claim and equivalency range Spirit and scope in the case of, the utility model is not limited to specific details, representational equipment and shown here as with retouching The examples shown stated.

Claims (7)

1. a kind of lithium battery, it is characterised in that：Including body, it is arranged at the block of described body one end and through the block And the check valve being fixedly connected with the block；The check valve includes a hollow valve body, cover plate, pedestal, baffle plate, first close Seal, sealing block, the second sealing ring, push rod and spring；The valve body includes upper end and the lower end away from the upper end；The valve Body also includes the dividing plate being located in the valve body, and the inner space of the valve body is divided into close to the upper end by the dividing plate First cavity and the second cavity of the close lower end simultaneously open up the via for connecting first cavity and second cavity；Institute Cover plate is stated to be fastened in the upper end to close first cavity；The base part be contained in the lower end and provided with it is described The intercommunicating pore of second cavity connection；The baffle plate is contained in first cavity and is resisted against the dividing plate to close the mistake Hole；First sealing ring is placed on one end of the push rod and is partially housed in the via；The sealing block overcoat has described Second sealing ring is simultaneously connected with the one end of the push rod away from first sealing ring；The sealing block and second sealing Circle is contained in second cavity and on the pedestal and the sealing block closes the intercommunicating pore of the pedestal；The bullet Spring be located in second cavity and the other end that is placed on that the push rod is outer and one end is in contact with first sealing ring with it is described Sealing block is in contact.

2. lithium battery as claimed in claim 1, it is characterised in that：First sealing ring include be contained in the via and with Resettlement section and protrude out the flange formed by the resettlement section that the via is in close contact, first sealing ring, which is offered, to be run through The resettlement section and the through hole of the flange；It is opposite in the side of the baffle plate that the flange is resisted against the dividing plate.

3. lithium battery as claimed in claim 2, it is characterised in that：The push rod is cylindrical, and the through hole is circular and institute The diameter for stating through hole is more than the diameter of the push rod；One end of the push rod is contained in the through hole and coaxially set with the through hole Put.

4. lithium battery as claimed in claim 1, it is characterised in that：The sealing block includes main part, by the main part Two ends stretch out the first chimb and the second chimb to be formed respectively；Second sealing ring be placed on the main part it is outer and with institute State the first chimb and second chimb is in close contact.

5. lithium battery as claimed in claim 4, it is characterised in that：The main part is cylindric, first chimb and institute State the diameter that the second chimb is more than second chimb for the diameter of circular and described first chimb, the diameter of second chimb More than the diameter of the main part；Second chimb is located at close to the side of the pedestal；Second sealing ring with it is described Pedestal is in contact.

6. lithium battery as claimed in claim 1, it is characterised in that：One end that the push rod is connected with the sealing block is provided with outer Screw thread, the center of the sealing block is provided with corresponding to the push rod external screw thread and through the internal thread of the sealing block, described to push away Bar is fixedly connected with the sealing block by external screw thread with screw-internal thread fit.

7. lithium battery as claimed in claim 1, it is characterised in that：The pedestal is hollow form and is provided with first boss and second Boss, the lower end is in contact with the first boss and is provided with the groove corresponding to the second boss, the second boss And the groove sealing coordinates.