CN210487470U - Soft-packaged electrical core expansive force testing device - Google Patents
Soft-packaged electrical core expansive force testing device Download PDFInfo
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- CN210487470U CN210487470U CN201921042074.6U CN201921042074U CN210487470U CN 210487470 U CN210487470 U CN 210487470U CN 201921042074 U CN201921042074 U CN 201921042074U CN 210487470 U CN210487470 U CN 210487470U
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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
Abstract
The utility model relates to a battery test field discloses a laminate polymer core expansibility testing arrangement, include by lower supreme fixed range upon range of electric core loading board (1), the laminate polymer core (3) and the expansion test panel (4) of awaiting measuring in proper order, electric core loading board (1) with it is equipped with the cotton (2) of elasticity bubble to fill up between laminate polymer core (3), laminate polymer core expansibility testing arrangement still including set up in the expansion test panel (4) top be used for the detection component of the expansibility of laminate polymer core (3). The utility model discloses a soft-packaged electrical core expansibility testing arrangement establishes elasticity bubble cotton through filling up between electric core loading board and the soft-packaged electrical core that awaits measuring, when charging and discharging soft-packaged electrical core, elasticity bubble cotton can compensate soft-packaged electrical core and make each position thickness of soft-packaged electrical core main part unanimous to make soft-packaged electrical core each position atress in the expansibility test procedure even, the accurate expansibility that records soft-packaged electrical core and produce at the charging and discharging in-process expansion contraction.
Description
Technical Field
The utility model relates to a battery test field specifically relates to a laminate polymer battery core bulging force testing arrangement.
Background
With the rapid increase of the number of new energy automobiles, the lithium ion power battery has become the key for developing the electric automobiles. The soft-package lithium ion power battery is usually formed into a power battery module in a mode that soft-package cells are connected in series or in parallel to form a group. The extranal packing of laminate polymer core is soft plastic-aluminum membrane casing, and the space between the core is rolled up to casing and inside is less, and the core inflation conduction is mainly embodied as the change of electric core thickness to the casing to the charge-discharge in-process, and the change of this kind of thickness can lead to the fact adverse effect to lithium ion battery's life-span and battery in groups. Therefore, the expansion and compression states of the soft package battery cell in the charge-discharge cycle process are known, and the method has important significance for predicting and prolonging the service life of the battery.
The soft-packaged electrical core bulging force testing arrangement who uses at present is that directly press from both sides soft-packaged electrical core and locate between two atress boards, applys initial force by force applying device, and this initial force transmits one of them atress board through the elastic component and compresses tightly soft-packaged electrical core, and soft-packaged electrical core when the inflation shrinkage, can change two atress boards applied pressure, transmits load cell and measures. However, because the soft-package battery cell is influenced by the roll core in the charging and discharging process, the thickness of each position is not completely consistent, so that the stress of each position of the soft-package battery cell is not uniform in the testing process, the expansion force of the soft-package battery cell is not accurately tested, and the true expansion state of the soft-package battery cell cannot be reflected.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a soft-packaged electrical core bulging force testing arrangement to the accurate bulging force that detects soft-packaged electrical core.
In order to realize the above-mentioned purpose, the utility model provides a soft-packaged electrical core expansibility testing arrangement, soft-packaged electrical core expansibility testing arrangement includes by lower supreme fixed range upon range of electric core loading board in proper order, the soft-packaged electrical core that awaits measuring and the expansion test panel, electric core loading board with it is cotton to fill up to be equipped with the elasticity bubble between the soft-packaged electrical core, soft-packaged electrical core expansibility testing arrangement still including set up in the expansion test panel top be used for detecting the detection component of the expansibility of soft-packaged electrical core.
Optionally, the detection assembly comprises a load cell disposed above the expansion test plate and a passive pressure bearing plate disposed above the load cell, the passive pressure bearing plate being arranged to be able to apply pressure to the load cell; and/or
The soft-package battery cell expansive force testing device comprises a first limiting part used for limiting the distance between the battery cell bearing plate and the expansion testing plate.
Optionally, the cell loading plate, the expansion test plate and the passive pressure bearing plate are fixedly connected by a connecting member, and the soft package cell expansion force testing device includes an adjusting member which is matched with the connecting member to adjust the pressure of the passive pressure bearing plate on the load cell; and/or
The soft-packaged cell comprises a square main body and a positive electrode lug and a negative electrode lug which are respectively extended outwards from the two sides of the main body along the length direction, wherein the positive electrode lug and the negative electrode lug are located outside the peripheral outline of the cell bearing plate, and the cross section size of the elastic foam is matched with the cross section size of the main body.
Optionally, two side edges of the flexible package cell in the width direction are located in a peripheral outline of the cell carrier plate, the connecting member is a bolt, two side edges of the cell carrier plate, the expansion test plate and the passive bearing plate in the width direction of the flexible package cell are respectively provided with a connecting hole for the bolt to pass through, the head of the bolt abuts against the bottom surface of the cell carrier plate, and the adjusting member is a nut sleeved at one end of the bolt located above the passive bearing plate; and/or
Soft-packaged electrical core bulging force testing arrangement is including being used for preventing soft-packaged electrical core with the elasticity bubble is cotton the second locating part that removes on soft-packaged electrical core's the width direction.
Optionally, the device for testing the swelling force of the soft-package battery cell comprises a plurality of bolts, a plurality of connecting holes are respectively formed in the edges of the two sides of the battery cell loading plate, the swelling test plate and the passive bearing plate, and the connecting holes are uniformly arranged at intervals along the length direction of the soft-package battery cell; and/or
The first locating part is located between the battery cell bearing plate and the expansion test plate and is sleeved on the cylindrical part on the bolt, and the height of the cylindrical part is equal to the initial combination thickness of the soft package battery cell and the elastic foam.
Optionally, the second limiting part is the cylindrical part, and an outer side surface of the cylindrical part abuts against side surfaces of the soft package battery cell and the elastic foam; and/or
One side of the elastic foam facing the battery cell bearing plate is coated with high-temperature fire-resistant glue.
Optionally, the cell bearing plate, the expansion test plate and the passive bearing plate are all high-strength steel plates or aluminum alloy plates; and/or
The thicknesses of the cell bearing plate, the expansion test plate and the passive pressure-bearing plate are 10-25 mm.
Optionally, the device for testing the swelling force of the soft-package battery cell comprises a charge and discharge element, and the charge and discharge element is arranged to be connected with the positive tab and the negative tab of the soft-package battery cell so as to charge and discharge the soft-package battery cell; and/or
The soft-package battery cell expansive force testing device comprises a temperature measuring element, wherein the temperature measuring element is used for detecting the temperatures of the main body, the positive electrode lug and the negative electrode lug of the soft-package battery cell.
Optionally, a temperature measuring hole for detecting the temperature of the main body is arranged at the bottom of the battery cell loading plate; and/or
The soft package battery core expansion force testing device comprises a control unit, wherein the control unit is set to be capable of monitoring the pressure value of the load cell.
Optionally, the temperature measuring hole is located in the center of the bottom of the battery cell bearing plate, and the depth of the temperature measuring hole is 1mm-3mm smaller than the thickness of the battery cell bearing plate; and/or
The control unit is set to be capable of monitoring the temperature of the temperature measuring element and monitoring the voltage, the current and the capacity of the soft package battery cell acquired by the charge and discharge element.
The utility model discloses a soft-packaged electrical core expansibility testing arrangement establishes elasticity bubble cotton through filling up between electric core loading board and the soft-packaged electrical core that awaits measuring, when charging and discharging soft-packaged electrical core, elasticity bubble cotton can compensate soft-packaged electrical core and make each position thickness of soft-packaged electrical core main part unanimous to make soft-packaged electrical core each position atress in the expansibility test procedure even, the accurate expansibility that records soft-packaged electrical core and produce at the charging and discharging in-process expansion contraction.
Other features and advantages of the present invention will be described in detail in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a perspective view of an embodiment of a device for testing the expansion force of a medium-soft-package battery cell according to the present invention;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a bottom view of FIG. 2;
fig. 4 is an exploded view of fig. 1.
Description of the reference numerals
1-cell bearing plate, 11-temperature measuring hole, 2-elastic foam, 3-soft package cell, 31-main body, 32-positive tab, 33-negative tab, 4-expansion testing plate, 5-pressure measuring element, 6-passive bearing plate, 7-bolt, 71-connecting hole, 72-nut and 8-barrel-shaped piece.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
In the present invention, unless otherwise specified, the use of directional terms such as "upper, lower, top, bottom" generally refer to the orientation shown in FIG. 2.
The utility model provides a soft-packaged electrical core expansibility testing arrangement, soft-packaged electrical core expansibility testing arrangement includes by lower supreme fixed range upon range of electric core loading board 1 in proper order, the soft-packaged electrical core 3 that awaits measuring and the expansion test board 4, fills up between electric core loading board 1 and the soft-packaged electrical core 3 and is equipped with elasticity bubble cotton 2, soft-packaged electrical core expansibility testing arrangement is still including setting up in the expansion test board 4 top be used for detecting the detection component of the expansibility of soft-packaged electrical core 3.
The utility model discloses a soft-packaged electrical core expansibility testing arrangement establishes elasticity bubble cotton 2 through filling up between electric core loading board 1 and the soft-packaged electrical core 3 that awaits measuring, when charging and discharging soft-packaged electrical core 3, elasticity bubble cotton 2 can compensate soft-packaged electrical core 3 and make each position thickness of 3 main parts of soft-packaged electrical core unanimous to make soft-packaged electrical core 3 each position atress in the expansibility test procedure even, the accurately measurations the expansibility that soft-packaged electrical core 3 produced at the charging and discharging in-process expansion contraction.
The utility model discloses in, detection assembly can be for arbitrary can detecting the part of the bulging force of soft-packaged electrical core 3 production at the charge-discharge in-process expansion contraction. According to an embodiment of the present invention, as shown in fig. 1, 2 and 4, the detecting assembly includes a load cell 5 disposed above the expansion testing plate 4 and a passive pressure bearing plate 6 disposed above the load cell 5, wherein the passive pressure bearing plate 6 is configured to apply pressure to the load cell 5. Because the inflation and the shrink of soft-packaged electrical core 3 in the charge-discharge process are not very obvious, the utility model discloses a set up the passive bearing plate 6 that can exert pressure to load cell 5 in load cell 5 top, load cell 5 can have certain initial pressure (for example 500) and add 1500N), can improve load cell 5's detectivity so greatly for load cell 5 can accurately detect the inflation and the shrink change of soft-packaged electrical core 3.
As shown in fig. 1, 2 and 4, the soft package core 3 includes a main body 31 having a square shape, and a positive electrode tab 32 and a negative electrode tab 33 respectively extending outward from both sides of the main body 31 in the length direction. The cell carrier plate 1, the expansion test plate 4, and the passive pressure receiving plate 6 have substantially the same shape as the main body 31 of the soft pack cell 3, that is, are formed as a square plate-like member. In order to facilitate the connection between the positive tab 32 and the negative tab 33 and the charge and discharge element, the positive tab 32 and the negative tab 33 can be located outside the peripheral outline of the cell loading plate 1, so that the main body 31 of the soft-package cell 3 is located inside the peripheral outlines of the cell loading plate 1 and the expansion test plate 4, the change of the thickness of the soft-package cell 3 is reflected in the thickness change of the main body 31, and therefore the cross section size of the elastic foam 2 can be matched with the cross section size of the main body 31 to compensate the thickness change of the main body 31.
The utility model discloses in, can understand that electric core loading board 1, elasticity bubble cotton 2, soft-packaged electrical core 3, the expansion is surveyed board 4, load cell 5 and passive bearing plate 6 and is not removed in vertical direction, in order to reach this kind of effect, can make electric core loading board 1, the expansion survey board 4 and passive bearing plate 6 and pass through connecting piece fixed connection, and elasticity bubble cotton 2, soft-packaged electrical core 3 and load cell 5 then obtain fixedly under the clamp force. In addition, in order to simplify the structure of the soft package battery cell expansion force testing device, the cost is reduced, meanwhile, the adjustment of the pressure of the load cell 5 by the passive pressure bearing plate 6 can be realized by means of the connecting piece, and the soft package battery cell expansion force testing device can also comprise an adjusting piece which is matched with the connecting piece to adjust the pressure of the load cell 5 by the passive pressure bearing plate 6. Of course, it should be noted that the adjusting member may not be engaged with the connecting member, but may be a separate member for adjusting the pressure applied by the passive pressure bearing plate 6 to the load cell 5, for example, the adjusting member may be a weight member disposed above the passive pressure bearing plate 6.
Specifically, according to the utility model discloses in an embodiment of connecting piece can make soft-packaged electrical core 3's both sides limit along width direction be located the peripheral outline of electric core loading board 1, the bolt 7 that the board 4 and passive bearing plate 6 set up is surveyed for running through electric core loading board 1, inflation to the connecting piece, and electric core loading board 1, inflation are surveyed the both sides edge along the width direction of soft-packaged electrical core 3 of board 4 and passive bearing plate 6 and are provided with the connecting hole 71 that supplies bolt 7 to pass respectively (refer to fig. 1, fig. 2 and fig. 4). Through the above arrangement, the interference of the bolt 7 with the positive electrode tab 32 and the negative electrode tab 33 located on both sides of the soft package battery core 3 in the length direction can be avoided. The cell loading plate 1, the expansion test plate 4 and the passive bearing plate 6 may have the same cross-sectional size, and the length of the cross-section should be smaller than that of the soft-package cell 3, and the width of the cross-section should be greater than that of the soft-package cell 3.
Further, in order to achieve the matching with the adjusting member, the head of the bolt 7 is to abut against the bottom surface of the cell loading plate 1, and the adjusting member is a nut 72 (see fig. 2) sleeved on one end of the bolt 7 above the passive pressure bearing plate 6. The adjustment of the pressure of the load cell 5 by the passive pressure plate 6 can be achieved by adjusting the tightness of the nut 72.
In order to improve the reliability that electric core loading board 1, expansion testing board 4 and passive bearing plate 6 are fixed and the homogeneity of 3 atresss of soft-packaged electrical core, soft-packaged electrical core expansion force testing arrangement preferably includes a plurality of bolts 7, and electric core loading board 1, expansion testing board 4 and passive bearing plate 6 both sides edge is provided with a plurality of connecting holes 71 respectively, and a plurality of connecting holes 71 evenly set up at the interval along the length direction of soft-packaged electrical core 3 (refer to fig. 4). The material of the bolt 7 is preferably high-strength steel, and the diameter of the rod part of the bolt 7 is preferably 6mm-15mm, so that sufficient tensile strength and bending strength can be ensured.
The utility model discloses a bottom surface pad at laminate polymer core 3 establishes elasticity bubble cotton 2, can make laminate polymer core 3 have with the state unanimous in the power battery module, be favorable to reflecting the true expansion and contraction state of laminate polymer core 3 in the power battery module like this. Further, in order to simulate the initial compression state of laminate polymer core 3 in the power battery module to detect the bulging force more accurately, laminate polymer core bulging force testing arrangement can include the first locating part that is used for restricting the interval between electric core loading board 1 and the expansion test board 4. Through the setting of first locating part not only can restrict soft-packaged electrical core 3 and the cotton initial combination thickness of elasticity bubble 2 and make it keep unchangeable in whole test procedure, but also can avoid the pressure transmission that passive bearing plate 6 applyed to load cell 5 to soft-packaged electrical core 3, at 3 charge-discharge in-process of soft-packaged electrical core, the expansion and contraction change of 3 thicknesses of soft-packaged electrical core can be absorbed by elasticity bubble cotton 2.
In the above, the initial combination thickness of the soft-package battery cell 3 and the elastic foam 2 is the sum of the thickness of the soft-package battery cell 3 and the thickness of the elastic foam 2 after shrinkage in a compressed state. This initial combination thickness is best unanimous with the cotton initial combination thickness of laminate polymer core and elasticity bubble in the power battery module (for example the cotton thickness of laminate polymer core + elasticity bubble-0.1 mm) to the initial pressurized state of laminate polymer core in the power battery module is simulated. That is to say, the soft-packaged electrical core bulging force testing arrangement is through making soft-packaged electrical core 3 and the cotton 2 initial combination thickness of elasticity bubble unanimous with the cotton initial combination thickness of elasticity bubble in power battery module and realizing unanimous initial pressure, can guarantee like this that the state curve of 3 bulging forces of soft-packaged electrical core is unanimous when using in the test procedure.
Wherein, for the inflation state of more real reflection laminate polymer core in the power battery module, elasticity bubble cotton 2 can have with the cotton same material and thickness of elasticity bubble in the power battery module, elasticity bubble cotton 2 can adopt the EVA material, has high resilience, high pliability, adhesion and electrical insulation, and thickness preferred is 0.5mm-2.0 mm. In addition, in order to prevent the elastic foam 2 from moving, a high temperature and fire resistant adhesive may be coated on one surface of the elastic foam 2 facing the battery cell loading plate 1 to be attached to the upper surface of the battery cell loading plate 1.
According to the utility model discloses in an embodiment of first locating part, as shown in fig. 1 and fig. 2, first locating part is for being located between electric core loading board 1 and the expansion test board 4 and the tube-shape piece 8 on bolt 7 is located to the cover, and the height of tube-shape piece 8 equals with soft-packaged electric core 3 and the cotton 2 initial combination thickness of elasticity bubble. It can be understood that, in the case that the soft packing cell expansion force testing device includes a plurality of bolts 7, the number of the cylinders 8 is also a plurality, and the number of the cylinders 8 is the same as that of the bolts 7.
The cylindrical member 8 is a columnar member having a through hole in the center thereof through which the bolt 7 can pass, and may be a cylinder or a prism. The material and dimensions of the barrel 8 are such that they ensure compressive strength and match the dimensions of the bolt 7. For example, high strength steel may be used for the barrel 8, and when the barrel 8 is cylindrical, the outer diameter of the barrel 8 may be 15 to 20mm, and the inner diameter of the barrel 8 may be 11 to 16 mm.
The utility model discloses in, in order to prevent that soft-packaged electrical core 3 from producing the removal on its width direction (the direction of the perpendicular to paper that is shown in fig. 2 promptly) to influence the accuracy of bulging force test, soft-packaged electrical core bulging force testing arrangement can be including the second locating part that is used for preventing soft-packaged electrical core 3 and elasticity bubble cotton 2 and removes on soft-packaged electrical core 3's width direction.
According to the utility model discloses in an implementation of second locating part, the second locating part is tube-shape 8, and the lateral surface butt of tube-shape 8 is in the side of soft-packaged electrical core 3 and elasticity bubble cotton 2. That is to say, barrel-shaped 8 is both first locating part, also is the second locating part, and the function of first locating part is realized to the height of barrel-shaped 8, and the function of second locating part is realized to barrel-shaped 8 and soft-packaged electrical core 3 and the cotton 2 butt of elasticity bubble in the width direction of soft-packaged electrical core 3. In another embodiment, the first stopper and the second stopper may be two relatively independent members, for example, the second stopper may be a flange protruding upward from the upper surface of the cell carrier plate 1 and extending in the longitudinal direction of the flexible package cell 3, and the inner side of the flange abuts against the side surfaces of the flexible package cell 3 and the elastic foam 2.
The utility model discloses in, as shown in fig. 1 and fig. 4, because load cell 5's size is less than laminate polymer core 3 and the size of expansion test board 4, when high stress test, the expansion test board 4 can produce compressive stress and bending stress with passive bearing plate 6, consequently, in order to guarantee at the in-process that bears the high stress, reduce bending stress, thereby improve the test accuracy, electric core loading board 1, the expansion test board 4 and passive bearing plate 6 can adopt the material that bending strength such as high strength steel or aluminium alloy is big to make. Furthermore, the cell carrier plate 1, the expansion test plate 4 and the passive pressure bearing plate 6 are preferably sufficiently thick, for example, their thickness may be 10mm to 25mm, preferably 16mm to 18mm, respectively. Therefore, under the action of high pressure stress and high bending moment, the cell bearing plate 1, the expansion test plate 4 and the passive bearing plate 6 can still be ensured to have no deformation or the deformation is less than 0.1 mm.
In the utility model, the device for testing the expansion force of the soft-package battery cell can also comprise a charge and discharge element and a temperature measuring element, wherein the charge and discharge element is arranged to be connected with the positive lug 32 and the negative lug 33 of the soft-package battery cell 3 so as to charge and discharge the soft-package battery cell 3; the temperature measuring element is used for detecting the temperatures of the main body 31, the positive electrode tab 32 and the negative electrode tab 33 of the soft package battery core 3.
In order to detect the temperature of the main body 31 of the soft package cell 3, a temperature measuring hole 11 (see fig. 3) for detecting the temperature of the main body 31 may be provided at the bottom of the cell carrier plate 1. The temperature measuring hole 11 may be located in the center of the bottom of the cell loading plate 1. The temperature measuring hole 11 may have any shape, for example a cylindrical shape. In addition, in order to prevent the temperature measuring probe extending into the temperature measuring hole 11 from deforming the elastic foam 2 and the soft package cell 3 due to excessive pressure during the test, thereby causing a safety accident caused by the damage of the soft package cell 3, the temperature measuring hole 11 preferably does not penetrate through the cell carrier plate 1, for example, the depth of the temperature measuring hole 11 can be smaller than the thickness of the cell carrier plate 1 by 1mm to 3 mm.
The utility model discloses in, load cell 5 can be pressure sensor, survey test panel 4 through the inflation and test soft packet of electric core 3's bulging force with the pressure between the passive bearing plate 6. The soft package battery core expansion force testing device can further comprise a control unit, wherein the control unit can monitor the pressure value of the load cell 5, monitor the temperature of the temperature measuring element and monitor the voltage, the current and the capacity of the soft package battery core 3 collected by the charge and discharge element.
In the charge-discharge test process of soft-package battery core 3, the main part 31 of soft-package battery core 3 can appear the inflation and the shrink of thickness direction, and the deformation that appears is absorbed by elasticity bubble cotton 2 to with force transmission to expansion test board 4 and load cell 5, gather soft-package battery core 3's bulging force by load cell 5. Voltage, electric current, the capacity in 3 test processes of soft-packaged electrical core are gathered by the charge-discharge element, and the temperature variation of soft-packaged electrical core 3 is gathered by temperature measurement element. Make into the corresponding curve through voltage, electric current, bulging force, the temperature data with gathering, can observe the change situation that corresponds the project at 3 charge-discharge in-process of soft-packaged electrical core to know the soft-packaged electrical core in the state such as inflation and pressurized of charge-discharge cycle in-process, predict the life of soft-packaged electrical core. The load cell 5, the temperature measuring element and the charge and discharge element can transmit collected data to the control unit, and the data are displayed and made into a curve by the control unit. Of course, the operation of the load cell 5, the temperature measuring element and the charge and discharge element may also be controlled by the control unit.
The utility model discloses a soft-packaged electrical core bulging force test method is introduced below in combination with the accompanying drawing, test method includes:
horizontally placing the battery cell loading plate 1, enabling the surface with the temperature measuring hole 11 to face downwards, enabling the head of the bolt 7 to downwards penetrate through the connecting hole 71 of the battery cell loading plate 1, and sleeving the cylindrical part 8 on the rod part of the bolt 7;
covering elastic foam 2 on the upper surface of the cell loading plate 1, horizontally placing a soft-package cell 3 to be tested on the elastic foam 2, and enabling a positive electrode lug 32 and a negative electrode lug 33 of the soft-package cell 3 to be positioned outside the peripheral outline of the cell loading plate 1, so that two sides of the soft-package cell 3 and the elastic foam 2 in the width direction are abutted against the outer side surface of the cylindrical part 8;
sleeving a connecting hole 71 of an expansion test plate 4 on a bolt 7, enabling the expansion test plate 4 to be supported above a soft package battery cell 3, placing a pressure measuring element 5 above the expansion test plate 4, sleeving a connecting hole 71 of a passive pressure bearing plate 6 on the bolt 7, enabling the passive pressure bearing plate 6 to be supported above the pressure measuring element 5, sleeving a nut 72 at one end of the bolt 7, which is positioned above the passive pressure bearing plate 6, and fixedly connecting the battery cell bearing plate 1, the expansion test plate 4 and the passive pressure bearing plate 6;
controlling the nuts 72 to be screwed by using a torque wrench, enabling the screwing moments of the plurality of nuts 72 to be consistent, observing the pressure value monitored by the control unit, and adjusting the initial pressure value of the load cell 5 to 950 plus 1050N by adjusting the tightness of the nuts 72;
connect charge-discharge element in soft-packaged electrical core 3's anodal ear 32 and negative pole ear 33, charge-discharge to soft-packaged electrical core 3, detect the bulging force of soft-packaged electrical core 3 at the charge-discharge in-process through load cell 5, adopt temperature element to detect soft-packaged electrical core 3's main part 31, anodal ear 32 and negative pole ear 33's temperature simultaneously.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be within the scope of the present invention to perform various simple modifications to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.
In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.
Claims (10)
1. The utility model provides a soft-packaged electrical core expansibility testing arrangement, a serial communication port, soft-packaged electrical core expansibility testing arrangement includes by lower supreme fixed range upon range of electric core loading board (1), the soft-packaged electrical core (3) and the expansion test panel (4) of awaiting measuring in proper order, electric core loading board (1) with it is equipped with elastic bubble cotton (2) to fill up between soft-packaged electrical core (3), soft-packaged electrical core expansibility testing arrangement still including set up in the expansion test panel (4) top be used for the detection subassembly of the expansibility of soft-packaged electrical core (3).
2. The soft-package cell expansion force testing device of claim 1,
the detection assembly comprises a load cell (5) arranged above the expansion test plate (4) and a passive pressure bearing plate (6) arranged above the load cell (5), wherein the passive pressure bearing plate (6) is arranged to be capable of applying pressure to the load cell (5); and/or
The soft-package battery cell expansion force testing device comprises a first limiting part used for limiting the distance between the battery cell bearing plate (1) and the expansion testing plate (4).
3. The soft-package cell expansion force testing device of claim 2,
the cell bearing plate (1), the expansion test plate (4) and the passive pressure bearing plate (6) are fixedly connected through a connecting piece, and the soft package cell expansion force test device comprises an adjusting piece which is matched with the connecting piece to adjust the pressure of the passive pressure bearing plate (6) on the pressure measuring element (5); and/or
Laminate polymer core (3) including be square main part (31) and respectively from positive ear (32) and negative pole ear (33) of the outside extension in length direction's both sides of main part (31), positive ear (32) with negative pole ear (33) are located outside the peripheral profile of electric core loading board (1), the cross sectional dimension of elasticity bubble cotton (2) with the cross sectional dimension phase-match of main part (31).
4. The soft-package cell expansion force testing device of claim 3,
the two side edges of the soft package battery cell (3) in the width direction are located in the peripheral outline of the battery cell bearing plate (1), the connecting piece is a bolt (7), the edges of the battery cell bearing plate (1), the expansion test plate (4) and the two side edges of the passive bearing plate (6) in the width direction of the soft package battery cell (3) are respectively provided with a connecting hole (71) for the bolt (7) to pass through, the head of the bolt (7) abuts against the bottom surface of the battery cell bearing plate (1), and the adjusting piece is a nut (72) sleeved at one end of the bolt (7) above the passive bearing plate (6); and/or
Soft-packaged electrical core bulging force testing arrangement is including being used for preventing soft-packaged electrical core (3) with elasticity bubble cotton (2) are in the second locating part that removes on the width direction of soft-packaged electrical core (3).
5. The soft-package cell expansion force testing device of claim 4,
the device for testing the expansion force of the soft package cell comprises a plurality of bolts (7), a plurality of connecting holes (71) are respectively formed in the edges of the two sides of the cell bearing plate (1), the expansion test plate (4) and the passive bearing plate (6), and the connecting holes (71) are uniformly arranged at intervals along the length direction of the soft package cell (3); and/or
The first limiting part is located between the cell bearing plate (1) and the expansion test plate (4) and is sleeved on the cylindrical part (8) on the bolt (7), and the height of the cylindrical part (8) is equal to the initial combination thickness of the soft package cell (3) and the elastic foam (2).
6. The soft-package cell expansion force testing device of claim 5,
the second limiting part is the cylindrical part (8), and the outer side surface of the cylindrical part (8) abuts against the side surfaces of the soft package battery cell (3) and the elastic foam (2); and/or
One surface of the elastic foam (2) facing the battery cell bearing plate (1) is coated with high-temperature fire-resistant glue.
7. The soft-package cell expansion force testing device of any one of claims 2 to 6,
the cell bearing plate (1), the expansion test plate (4) and the passive bearing plate (6) are all high-strength steel plates or aluminum alloy plates; and/or
The thicknesses of the cell bearing plate (1), the expansion test plate (4) and the passive bearing plate (6) are all 10-25 mm.
8. The soft-package cell expansion force testing device of any one of claims 3 to 6,
the soft package battery cell expansion force testing device comprises a charge and discharge element, and the charge and discharge element is arranged to be connected with the positive electrode lug (32) and the negative electrode lug (33) of the soft package battery cell (3) so as to charge and discharge the soft package battery cell (3); and/or
The soft-package battery cell expansion force testing device comprises a temperature measuring element, wherein the temperature measuring element is used for detecting the temperature of the main body (31), the positive electrode lug (32) and the negative electrode lug (33) of the soft-package battery cell (3).
9. The soft-package cell expansion force testing device of claim 8,
the bottom of the battery cell bearing plate (1) is provided with a temperature measuring hole (11) for detecting the temperature of the main body (31); and/or
The soft package battery core expansion force testing device comprises a control unit, wherein the control unit is set to be capable of monitoring the pressure value of the load cell (5).
10. The soft-package cell expansion force testing device of claim 9,
the temperature measuring hole (11) is positioned in the center of the bottom of the cell bearing plate (1), and the depth of the temperature measuring hole (11) is 1-3 mm smaller than the thickness of the cell bearing plate (1); and/or
The control unit is arranged to monitor the temperature of the temperature measuring element and monitor the voltage, the current and the capacity of the soft package battery core (3) acquired by the charge and discharge element.
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| CN201921042074.6U CN210487470U (en) | 2019-07-04 | 2019-07-04 | Soft-packaged electrical core expansive force testing device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112054144A (en) * | 2020-09-23 | 2020-12-08 | 上海兰钧新能源科技有限公司 | Soft package module and electric vehicle |
| CN113725505A (en) * | 2021-08-03 | 2021-11-30 | 天津市捷威动力工业有限公司 | Module expansion safety assessment method |
-
2019
- 2019-07-04 CN CN201921042074.6U patent/CN210487470U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112054144A (en) * | 2020-09-23 | 2020-12-08 | 上海兰钧新能源科技有限公司 | Soft package module and electric vehicle |
| CN112054144B (en) * | 2020-09-23 | 2023-05-09 | 上海兰钧新能源科技有限公司 | Soft package module and electric vehicle |
| CN113725505A (en) * | 2021-08-03 | 2021-11-30 | 天津市捷威动力工业有限公司 | Module expansion safety assessment method |
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