CN217689049U - Battery cell constant pressure and constant gap circulating clamp - Google Patents

Abstract

The utility model discloses an electric core constant pressure and permanent clearance circulation anchor clamps have solved conventional frock clamp and can only carry out the constant force spacing to electric core upper and lower, and the electric core side still can appear the inflation, electric core when receiving external force great, local deformation scheduling problem easily appears, and its main technical scheme is including soft-packaged electrical core and be used for the frock of its test, the frock includes the first stop gear that compresses tightly to soft-packaged electrical core upper and lower face, the frock still includes the second stop gear that compresses tightly soft-packaged electrical core side, second stop gear and first stop gear mutually independent, it includes hold-down assembly and side guide, it includes driving piece, two-way screw rod and gag lever post to compress tightly the subassembly, the driving piece is used for rotating two-way screw rod and for the auto-lock, the side guide includes two and structure and corresponds with soft-packaged electrical core side, side guide one end is through with two-way screw rod screw-thread fit, the other end and gag lever post sliding connection, the frock bottom still includes the bolster that corresponds first stop gear.

Description

Battery cell constant pressure and constant gap circulating clamp

Technical Field

The utility model relates to an electricity core test technical field, more specifically says, it relates to an electricity core constant pressure and permanent clearance circulation anchor clamps.

Background

The complexity of an energy storage application scene determines the diversified development direction of an energy storage battery technology, and a lithium ion battery for energy storage should meet the characteristics of low cost, long service life, high safety and the like, and develops various energy storage batteries around the overall goal of low cost, long service life, high safety and easy recovery. In the process of analyzing and researching battery failure, the expansion of a battery core is mainly caused by poor electrolyte infiltration and increased expansion impedance inside the battery in the early stage, so that a certain stress is applied to the battery to relieve the expansion of the battery and inhibit the expansion of the battery, and the distribution of electrolyte, the expansion of thickness, the change of impedance and the like inside the battery are improved. The pressure of the lithium ion battery in the circulating process can be changed along with the change of charging and discharging, the pressure can be increased during charging, the pressure can be reduced during discharging, the expansion force of the lithium ion battery can be increased along with the increase of the circulating times, and the structural design of the module is also a problem.

At present, for example, the utility model with publication number CN209525366U discloses a cell clamp, which comprises an upper panel, a lower panel, a positioning rod, an upper panel and a lower panel; a clamping assembly connected with the upper panel, the clamping assembly comprising: the clamping plate is arranged between the upper panel and the lower panel; the screw is matched with the upper panel; and the first end of the spring is connected with the screw, and the second end of the spring is connected with the clamping plate.

Although the problem that the cycle performance is influenced by the fact that the test pressure is multiplied due to the expansion of the battery cell in the power cycle test process of the battery cell fixing clamp is solved, the expansion of a certain degree can still occur to the side face of the battery cell which is not compressed, the impedance can be locally increased, the bottom of the battery cell is still rigidly and directly compressed, the local deformation of the surface of the battery cell is easily caused, and the whole cycle test of the battery cell is not facilitated.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects, the utility model aims to provide a can avoid electric core side swell, electric core surface local deformation's electric core constant pressure and permanent clearance circulation anchor clamps.

In order to achieve the above purpose, the utility model discloses a technical scheme is: the utility model provides an electricity core constant pressure and permanent clearance circulation anchor clamps, includes soft-packaged electrical core and is used for the frock of its test, the frock includes the first stop gear that compresses tightly to soft-packaged electrical core top and bottom, the frock still includes the second stop gear that compresses tightly soft-packaged electrical core side, second stop gear and first stop gear mutual independence, it is including compressing tightly subassembly and side guide, compressing tightly the subassembly and including driving piece, two-way screw rod and gag lever post, the driving piece is used for rotating two-way screw rod and is the auto-lock, the side guide includes two and the structure corresponds with soft-packaged electrical core side, side guide one end through with two-way screw rod screw-thread fit, the other end and gag lever post sliding connection, the frock bottom still includes the bolster that corresponds first stop gear.

Further, the bolster includes kerve, lower limiting plate, buffering post and buffer spring, the buffering post includes four and is fixed in four corners in the kerve, the buffer spring parcel is in the buffering post outside, buffering capital portion slides with lower limiting plate bottom and is connected.

Furthermore, first stop gear includes positioning screw, pressure strip, last spacing board, pressure spring and spacing post, the pressure strip passes through the nut to be fixed on positioning screw, pressure spring parcel is in spacing post outside, the pressure strip slides with spacing post and is connected, pressure spring bottom and last spacing board fixed connection, its top and pressure strip contact.

Furthermore, a wood board is fixed on the surface of the upper limiting plate opposite to the lower limiting plate.

Further, kerve top both sides are equipped with the eaves mouth of halfpace form, work as when buffer spring compression capacity reaches the biggest, the limiting plate both sides closely laminate with the eaves mouth down.

Furthermore, the bidirectional screw is provided with symmetrical threads with opposite rotation directions, and the bidirectional screw and the limiting rod are fixed through the fixing table respectively.

Further, the driving part is a worm gear and a worm, and the driving part comprises multiple types.

The beneficial effects of the utility model are that, can compress tightly electric core side simultaneously when anchor clamps are to electric core upper and lower surface application of force, avoid electric core side inflation swell so that the resistance changes, here simultaneously, the local slight deformation that brings of the contact of indirect rigidity when avoiding electric core upper and lower face to compress tightly through the bottom bolster does benefit to the technology promotion of whole electric core circulation test.

Drawings

Fig. 1 is an isometric view of a preferred embodiment of the invention;

FIG. 2 is a front view of a preferred embodiment of the present invention;

FIG. 3 is a sectional view taken along line A of FIG. 2 in accordance with a preferred embodiment of the present invention;

in the figure: 1. soft-packaged battery cells; 2. assembling; 3. a first limit mechanism; 31. positioning a screw rod; 32. a compression plate; 33. an upper limiting plate; 34. a compression spring; 35. a limiting column; 36. a nut; 4. a second limiting mechanism; 41. a compression assembly; 42. side pressing plates; 43. a bidirectional screw; 44. a limiting rod; 45. a thread; 46. a fixed table; 5. a buffer member; 51. a bottom groove; 52. a lower limiting plate; 53. a buffer column; 54. a buffer spring; 6. a wood board.

Detailed Description

The following description of the preferred embodiments of the present invention will be provided with reference to the accompanying drawings, so that the advantages and features of the present invention can be easily understood by those skilled in the art, and the scope of the present invention can be clearly and clearly defined.

Referring to fig. 1, the electric core constant-pressure and constant-gap circulating clamp in this embodiment includes a soft-package electric core 1 and a tool 2 for testing the soft-package electric core, where the tool 2 includes a first limiting mechanism 3 for compressing the upper and lower surfaces of the soft-package electric core 1, the tool 2 further includes a second limiting mechanism 4 for compressing the side surface of the soft-package electric core 1, the second limiting mechanism 4 is independent of the first limiting mechanism 3, and includes a compressing component 41 and a side pressure plate 42, the compressing component 41 includes a driving part, a bidirectional screw 43 and a limiting rod 44, the driving part is used for rotating the bidirectional screw 43 and is self-locking, the side pressure plate 42 includes two parts and has a structure corresponding to the side surface of the soft-package electric core 1, one end of the side pressure plate 42 is matched with the bidirectional screw 43 through a thread 45, the other end is connected with the limiting rod 44 in a sliding manner, and the bottom of the tool 2 further includes a buffer 5 corresponding to the first limiting mechanism 3.

The bidirectional screw 43 is provided with symmetrical threads 45 with opposite rotation directions, and the bidirectional screw 43 and the limiting rod 44 are respectively fixed through a fixing table 46.

The driving piece can include the multiple, use the worm gear as the example in this embodiment, outside worm wheel center and two-way screw 43 center coaxial fastening, the worm realizes the location with the external mounting spare and rotates and cooperate with the worm wheel meshing, can be for automatically controlled or handheld rotation during concrete operation, and concrete stress to soft-packaged electrical core 1 side pressure testing, the range of change of screw 45 distance is judged on the two-way screw 43 of accessible, and rotate the auto-lock nature of accessible worm gear itself and realize the location, realize the constant force, because soft-packaged electrical core 1 side area is less, in the cycle test, the inflation degree change is little, stress is exerted and can not be changed and the change by a wide margin by the inflation change, so the single mode that compresses tightly of side clamp 42 can satisfy the demand that reduces the inside inflation of soft-packaged electrical core 1.

As shown in fig. 1 and 2, the first limiting mechanism 3 includes a positioning screw 31, a pressing plate 32, an upper limiting plate 33, a pressing spring 34 and a limiting post 35, the pressing plate 32 is fixed on the positioning screw 31 through a nut 36, the pressing spring 34 is wrapped outside the limiting post 35, the pressing plate 32 is connected with the limiting post 35 in a sliding manner, the bottom of the pressing spring 34 is fixedly connected with the upper limiting plate 33, the top of the pressing spring is in contact with the pressing plate 32, and a wood plate 6 is fixed on the surface of the upper limiting plate 33 opposite to the lower limiting plate 52.

Therefore, to compressing tightly above the soft package battery core 1, the accessible adjusts the position of pressure strip 32 on positioning screw 31 and is locked by nut 36, and then pressure strip 32 compresses tightly pressure spring 34, and pressure spring 34 promotes to go up the spacing board 33 and realizes compressing tightly, and is convenient and reliable, and first stop gear 3 and second stop gear 4 are independent each other, can not disturb when side pressure plate 42 compresses tightly the compressing tightly of spacing board 33 and lower spacing board 52 to soft package battery core 1.

As shown in fig. 2 and 3, the buffer member 5 includes a bottom groove 51, a lower limiting plate 52, a buffer column 53 and a buffer spring 54, the buffer column 53 includes four and is fixed at four corners in the bottom groove 51, the buffer spring 54 is wrapped at the outer side of the buffer column 53, and the top of the buffer column 53 is connected with the bottom of the lower limiting plate 52 in a sliding manner.

Both sides of the top of the bottom groove 51 are provided with a terrace-shaped cornice, and when the compression amount of the buffer spring 54 reaches the maximum, both sides of the lower limiting plate 52 are tightly attached to the cornice.

And to the deformation that compresses tightly about soft-packaged electrical core 1 and alleviate, this scheme still designs a bolster 5, buffer column 53 that has buffer spring 54 through the inside cover of kerve 51, after limiting plate 52 atress descends down, limiting plate 52 descends at buffer column 53 top lapse and through buffer spring 54 buffering atress down, buffer spring 54 compression capacity reaches when the biggest, the both sides of limiting plate 52 are just in time laminated in kerve 51 top eaves mouth mutually down, when limiting plate 52 compresses tightly firmly soft-packaged electrical core 1 under the assurance, also avoided first stop gear 3 when exerting stress to soft-packaged electrical core 1, the slight deformation in part that the indirect rigid contact's of soft-packaged electrical core 1 bottom and conventional fixed station 46 brought, can more effectual realization soft-packaged electrical core 1 upper and lower surface the degree of consistency of stress that receives.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the above embodiments is to let the person skilled in the art understand the contents of the present invention and implement the present invention, which can not limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.

Claims (7)

1. The utility model provides a battery cell constant pressure and permanent clearance circulation anchor clamps, includes the soft-packaged electrical core and is used for the frock of its test, the frock includes the first stop gear that compresses tightly its characterized in that to the soft-packaged electrical core top and bottom: the frock still includes the second stop gear that compresses tightly soft-packaged electrical core side, second stop gear and first stop gear mutual independence, it is including compressing tightly subassembly and side guide, it includes driving piece, two-way screw rod and gag lever post to compress tightly the subassembly, the driving piece is used for rotating two-way screw rod and is the auto-lock, the side guide includes two and the structure corresponds with soft-packaged electrical core side, side guide one end through with two-way screw rod screw-thread fit, the other end and gag lever post sliding connection, the frock bottom still includes the bolster that corresponds first stop gear.

2. The constant-pressure and constant-gap cell cycle clamp of claim 1, wherein: the bolster includes kerve, lower limiting plate, buffering post and buffer spring, the buffering post includes four and is fixed in the inner four corners of kerve, buffer spring parcel is in the buffering post outside, buffering capital portion slides with lower limiting plate bottom and is connected.

3. The cell constant-pressure and constant-gap circulating clamp of claim 1, characterized in that: first stop gear includes positioning screw, pressure strip, last spacing board, pressure spring and spacing post, the pressure strip passes through the nut to be fixed on positioning screw, pressure spring parcel is in spacing post outside, the pressure strip slides with spacing post and is connected, pressure spring bottom and last spacing board fixed connection, its top and pressure strip contact.

4. The cell constant-pressure and constant-gap circulating clamp of claim 3, wherein: and a wood board is fixed on the surface of the upper limiting plate opposite to the lower limiting plate.

5. The constant-pressure and constant-gap cell cycle clamp of claim 2, wherein: bottom slot top both sides are equipped with the eaves mouth of halfpace form, work as when buffer spring compression capacity reaches the biggest, lower limiting plate both sides closely laminate with the eaves mouth.

6. The constant-pressure and constant-gap cell cycle clamp of claim 1, wherein: the bidirectional screw is provided with symmetrical threads with opposite rotation directions, and the bidirectional screw and the limiting rod are fixed through the fixing table respectively.

7. The constant-pressure and constant-gap cell cycle clamp of claim 1, wherein: the driving piece is a worm gear and a worm, and the driving piece comprises a plurality of types.

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