CN114942388B - Battery extrusion test explosion-proof box - Google Patents
Battery extrusion test explosion-proof box Download PDFInfo
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- CN114942388B CN114942388B CN202210496266.4A CN202210496266A CN114942388B CN 114942388 B CN114942388 B CN 114942388B CN 202210496266 A CN202210496266 A CN 202210496266A CN 114942388 B CN114942388 B CN 114942388B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
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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 invention relates to the technical field of battery explosion-proof boxes, in particular to an explosion-proof box for a battery extrusion test, which comprises: the control unit comprises a central control module, the central control module is used for calculating impact force generated when the battery explodes according to the measurement result of the displacement measurer and calculating the error rate of the pressure sensor according to the calculation result and the detection result of the pressure sensor, and the central control module judges whether the detection result of the pressure sensor needs to be corrected according to the error rate; the central control module judges whether the cabinet door can be opened or not according to the detection result of the pressure sensor and the detection result of the temperature sensor, so that the damage to workers caused by the fact that the cabinet door is opened due to overhigh pressure and temperature in the explosion-proof box is avoided, and the protection performance of the explosion-proof box to the workers is improved.
Description
Technical Field
The invention relates to the technical field of battery explosion-proof boxes, in particular to an explosion-proof box for a battery extrusion test.
Background
Batteries are often used in daily life, and in order to make the batteries safer in use, certain compression tests are required to simulate different states of compression of the batteries in use. In order to ensure that the process of the battery extrusion test is safer, the explosion-proof box needs to be used for certain protection treatment, so the explosion-proof box is widely used.
Chinese patent publication No.: CN202870118U discloses a battery test explosion-proof box, which discharges gas by providing a vent hole and a pressure reducing valve on the explosion-proof box, however, this method has the following problems: on one hand, air enters the explosion-proof box after the vent hole is opened to cause more violent combustion, and on the other hand, pollutants in the explosion-proof box are leaked to cause environmental pollution. Adopt natural cooling's method can avoid above problem, at this moment, promote explosion-proof box's buffering protective capacities crucial, if the pressure in the explosion-proof box does not reduce the default and open the cabinet door, can cause the damage to the staff simultaneously.
Disclosure of Invention
Therefore, the invention provides a battery extrusion test explosion-proof box which is used for overcoming the problem that the protection performance of the battery extrusion test explosion-proof box in the prior art on workers is insufficient.
In order to achieve the above object, the present invention provides an explosion-proof box for a battery extrusion test, comprising:
the battery testing device comprises an explosion-proof box main body, wherein an extrusion mechanism for extruding a battery to be tested is arranged in the explosion-proof box main body, and a locking bolt is arranged at a corner at one end of the explosion-proof box main body;
the anti-collision unit is arranged in the anti-collision box main body and used for buffering impact force generated when the battery explodes, and comprises a supporting plate, a vertical plate and a buffer block, wherein the supporting plate is arranged in the middle of the anti-collision unit, and the buffer layer used for buffering the impact force generated when the battery explodes is arranged in the supporting plate; the vertical plate is arranged at one end of the supporting plate, which is far away from the explosion-proof box, and reinforcing plates are arranged on two sides of the vertical plate and used for reinforcing the supporting and protecting capability of the anti-collision unit; the buffer block is arranged at one end of the support plate, which is far away from the vertical plate, and is used for buffering the impact force generated to the anti-collision unit when the battery explodes;
the detection module comprises a pressure sensor, a displacement measurer and a temperature sensor, wherein the pressure sensor is arranged on one side of the outer wall of the anti-collision unit, which is far away from the explosion-proof box, and is used for detecting impact force generated when the battery explodes, the displacement measurer is arranged in the anti-collision unit and is used for respectively detecting displacement generated when the buffer layer and the buffer block are impacted, and the temperature sensor is arranged on the inner wall of the main body of the explosion-proof box and is used for detecting the temperature in the main body of the explosion-proof box;
the cabinet door is arranged on one side of the explosion-proof box main body, an observation window is arranged on the outer side wall of the cabinet door and used for visually observing the interior of the explosion-proof box, and a protection structure used for enhancing the protection capability of the observation window is also arranged on the outer side wall of the observation window; the cabinet door is fixedly connected with the explosion-proof box main body through the locking bolt, and a mounting structure is arranged at the joint of the locking bolt and the explosion-proof box main body;
the control unit comprises a display module for displaying the test data, a recording module for recording the test data and a central control module for controlling the extrusion test parameters; the central control module is respectively connected with the extrusion mechanism, the pressure sensor, the displacement measurer and the temperature sensor and used for controlling the extrusion mechanism to extrude the battery to be tested, calculating impact force generated when the battery explodes according to the measurement result of the displacement measurer, and calculating the error rate of the pressure sensor according to the calculation result and the detection result of the pressure sensor, and the central control module judges whether the detection result of the pressure sensor needs to be corrected according to the error rate and judges whether the cabinet door can be opened according to the detection result of the pressure sensor and the detection result of the temperature sensor.
Furthermore, the central control module calculates an impact force Fj generated when the battery explodes according to the displacement D of the buffer layer and the displacement D ' of the buffer block, and sets Fj = [ (k × k ')/(k + k ') ] × (D + D '), where k is the elastic coefficient of the buffer layer and k ' is the elastic coefficient of the buffer block.
Further, when the extruded battery explodes, the central control module compares the obtained pressure value Fj with the pressure value Fc measured by the pressure sensor,
if Fj = Fc, the central control module judges that the detection value of the pressure sensor meets the standard;
if Fj ≠ Fc, the central control module judges that the detection value of the pressure sensor does not meet the standard, calculates the error rate delta of the detection value of the pressure sensor, selects a corresponding correction coefficient according to the error rate delta to correct the detection value of the pressure sensor to the corresponding value, and sets delta = (| Fj-Fc |)/(Fj/100).
Further, the central control module is provided with a first preset error rate delta 1, a second preset error rate delta 2, a third preset error rate delta 3, a first correction coefficient e1 and a second correction coefficient e2, wherein delta 1 is more than delta 2 and less than delta 3,0.8 is more than e1 and less than e2, when the central control module determines that the detection value of the pressure sensor does not meet the standard,
if delta is less than or equal to delta 1, the central control module judges that the error rate is within a normal range, and the detection value of the pressure sensor does not need to be corrected;
if delta 1 is larger than delta and is not larger than delta 2, the central control module judges that the error rate is not in a normal range, the detection value of the pressure sensor needs to be corrected, and e1 is selected to correct the detection value of the pressure sensor to a corresponding value;
if delta is larger than delta 2, the central control module judges that the error rate is not in a normal range, the detection value of the pressure sensor needs to be corrected, and e2 is selected to correct the detection value of the pressure sensor to a corresponding value.
Furthermore, when the central control module selects ei to correct the detection value of the pressure sensor to a corresponding value, i =1,2 is set, the corrected detection value is recorded as Fc',
if Fj > Fc, setting Fc' = Fc x (2-ei);
if Fj < Fc, fc' = Fc × ei is set.
Further, the central control module is provided with a pressure preset value F0 and a temperature preset value T0, when the explosion of the battery is finished, the central control module controls the pressure sensor and the temperature sensor to respectively detect the pressure Fc ' and the temperature T inside the explosion-proof box main body, when the pressure Fc ' is less than or equal to the F0 and the temperature T is less than or equal to the T0, the central control module judges that the cabinet door can be opened, and when the pressure Fc ' is greater than the F0 or the temperature T is greater than or equal to the T0, the central control module judges that the cabinet door cannot be opened.
Further, the central control module is provided with a first preset buffer layer elasticity coefficient k1, a second preset buffer layer elasticity coefficient k2, a third preset buffer layer elasticity coefficient k3, a first preset buffer layer displacement D1 and a second preset buffer layer displacement D2, wherein k1 is more than k2 and less than k3, D1 is more than D2, when the extruded battery explodes, the central control module controls the displacement measurer to measure the displacement D of the buffer layer,
if D is less than or equal to D1, the elasticity coefficient of the buffer layer is set to be k1 by the central control module;
if D1 is larger than D and is not larger than D2, the elasticity coefficient of the buffer layer is set to be k2 by the central control module;
and if D2 is less than D, the central control module sets the elasticity coefficient of the buffer layer to be k3.
Furthermore, the central control module is provided with a first preset buffer block elastic coefficient k1', a second preset buffer block elastic coefficient k2', a third preset buffer block elastic coefficient k3', a first preset buffer block displacement D1' and a second preset buffer block displacement D2', wherein k1' < k2' < k3', D1' < D2', and when the extrusion battery explodes, the central control module controls the displacement measurer to measure the displacement D ' of the buffer block,
if D ' is less than or equal to D1', the central control module sets the elasticity coefficient of the buffer block as k1';
if D1 'is less than D' and less than or equal to D2', the central control module sets the elasticity coefficient of the buffer block to be k2';
if D2' < D ', the central control module sets the elastic coefficient of the buffer block to be k3'.
Further, the mounting structure includes:
the stabilizing ring is arranged at the joint of the locking bolt and used for fixing the locking bolt;
the insulating ring is arranged inside the stabilizing ring and is concentric with the stabilizing ring, and the outer diameter of the insulating ring is smaller than the inner diameter of the stabilizing ring; one end of the insulating ring, which is far away from the stabilizing ring, is provided with a threaded block which is annularly distributed relative to the center of the insulating ring and forms a clamping structure together with the insulating ring; an elastic cavity is formed between the insulating ring and the stabilizing ring;
the mounting blocks are arranged at one end, close to the stabilizing ring, in the elastic cavity, and are distributed annularly about the circle center of the elastic cavity and used for fixing the clamp spring; the clamp spring is arranged on the mounting block and is elastically connected with the mounting block.
Further, the guard structure includes:
the adhesion layer is arranged on the outer side wall of the cabinet door and used for adhering the adhesion layer;
the attachment holes are arranged in the attachment layer at equal intervals and used for increasing the attachment area; the adhesive layer is arranged at one end of the attachment hole;
and the anti-corrosion layer is arranged at one end of the bonding layer.
Compared with the prior art, the invention has the advantages that the central control module calculates the impact force generated when the battery explodes according to the measurement result of the displacement measurer, calculates the error rate of the pressure sensor according to the calculation result and the detection result of the pressure sensor, and judges whether the detection result of the pressure sensor needs to be corrected according to the error rate; the central control module judges whether the cabinet door can be opened or not according to the detection result of the pressure sensor and the detection result of the temperature sensor, so that the damage to workers caused by the fact that the cabinet door is opened due to overhigh pressure and temperature in the explosion-proof box is avoided, and the protection performance of the explosion-proof box to the workers is improved.
Furthermore, the central control module selects a corresponding elastic coefficient according to the displacement of the buffer layer and the buffer block, so that the accuracy of the calculated impact force is ensured, and the protection performance of the explosion-proof box on workers is further improved.
Furthermore, the error rate is calculated by the central control module according to the obtained pressure value and the detected value of the pressure sensor, and the detected value of the pressure sensor is corrected to a corresponding value according to the selected corresponding correction coefficient by the error rate, so that the damage to workers caused by opening of the cabinet door when the pressure in the explosion-proof box is too high due to the overlarge error of the detected value of the pressure sensor is avoided, and the protection performance of the explosion-proof box on the workers is further improved.
Furthermore, the central control module is provided with a pressure preset value F0 and a temperature preset value T0, and when the central control module judges that the pressure value and the temperature value in the explosion-proof box are both lower than the preset values, the cabinet door can be opened, so that the damage to workers caused by the fact that the cabinet door is opened due to overhigh pressure and temperature in the explosion-proof box is avoided, and the protection performance of the explosion-proof box on the workers is further improved.
Further, through carrying out certain installation processing with firm ring earlier, and accomplish the installation work of its installation piece position department under the setting in its elasticity chamber, consequently make its bolt carry out the installation work in the position department of insulating circle and screw thread piece after its installation piece is installed, and accomplish certain locking under the cooperation of its screw thread piece and handle, simultaneously as the in-process of its installation because the jump ring can take place the rebound phenomenon after the atress, consequently the in-process that rebounds at its jump ring has fine its holistic block ability that has improved, thereby fine improvement its holistic stable installation ability, make its in-process at the installation more convenient.
Furthermore, certain adhesion work is performed on the adhesion layer, and meanwhile adhesion treatment at the position of the adhesion layer is completed under the arrangement of the adhesion hole, so that the overall protection and corrosion prevention work is well improved after the adhesion layer and the corrosion prevention layer are matched with each other, and the overall service life of the adhesion layer is well prolonged.
Further, through carrying out certain installation with the backup pad earlier and handling to accomplish certain buffering protection work under the setting of its buffer layer, simultaneously at the fine holistic support protective capacities that have improved of its reinforcing plate and riser under mutually supporting, accomplished certain buffering protection work simultaneously under the setting of its buffer block, thereby fine improvement its holistic stability in use.
Drawings
FIG. 1 is a schematic structural diagram of a battery extrusion test explosion-proof box according to the present invention in a front view;
FIG. 2 is a schematic front view of an anti-collision unit of the battery extrusion test explosion-proof box according to the present invention;
FIG. 3 is a diagram of the position relationship between the explosion-proof box main body and the anti-collision unit of the explosion-proof box for the battery extrusion test according to the present invention;
FIG. 4 is a schematic side view sectional structure diagram of a protective structure of the explosion-proof box for the battery extrusion test according to the present invention;
FIG. 5 is a schematic structural diagram of a side view cross section of an installation structure of the explosion-proof box for the battery extrusion test according to the invention.
In the figure: 1. an explosion-proof case main body; 2. an anti-collision unit; 201. a support plate; 202. a reinforcing plate; 203. a vertical plate; 204. a buffer layer; 205. a buffer block; 3. an observation window; 4. a protective structure; 401. an adhesion layer; 402. an attachment hole; 403. an adhesive layer; 404. an anticorrosive layer; 5. a locking bolt; 6. a mounting structure; 601. a stabilizing ring; 602. an elastic cavity; 603. mounting blocks; 604. a clamp spring; 605. an insulating ring; 606. a thread block; 7. a cabinet door.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described below with reference to examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principles of the present invention, and do not limit the scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1 to 3, which are schematic views of a front view structure of the battery crush test explosion-proof box of the present invention, a position relationship diagram of an explosion-proof box main body and an anti-collision unit of the battery crush test explosion-proof box of the present invention, and a front view structure diagram of an anti-collision unit of the battery crush test explosion-proof box of the present invention, respectively, the drawings include:
the explosion-proof box comprises an explosion-proof box body 1, wherein a pressing mechanism (not shown in the figure) for pressing a battery to be tested is arranged in the explosion-proof box body 1, and a locking bolt 5 is arranged at a corner of one end of the explosion-proof box body 1.
The anti-collision unit 2 is arranged in the anti-collision box main body 1, is used for buffering impact force generated when the battery explodes, and comprises a supporting plate 201, a vertical plate 203 and a buffer block 205, wherein the supporting plate 201 is arranged in the middle of the anti-collision unit 2, and the buffer layer 204 used for buffering the impact force generated when the battery explodes is arranged in the supporting plate 201; the vertical plate 203 is arranged at one end, far away from the explosion-proof box, of the supporting plate 201, and reinforcing plates 202 are arranged on two sides of the vertical plate 203 and used for reinforcing the supporting and protecting capacity of the anti-collision unit 2; the buffer block 205 is arranged at one end of the support plate 201 far away from the vertical plate 203, and is used for buffering the impact force generated by the anti-collision unit 2 when the battery explodes.
Reinforcing plates 202 are mounted on two sides of the vertical plate 203, and the reinforcing plates 202 are symmetrically distributed about a vertical central axis of the vertical plate 203 to enhance the supporting and protecting capability; buffer block 205 is equidistant range in the one end of backup pad 201, through above scheme, makes it can carry out certain even support to external force at the in-process of work and handle to fine improvement its holistic support protective capacities.
The detection module (not shown in the figure) comprises a pressure sensor which is arranged on one side of the outer wall of the anti-collision unit 2, which is far away from the explosion-proof box, and is used for detecting impact force generated when the battery explodes, a displacement measurer which is arranged inside the anti-collision unit 2 and is used for respectively detecting displacement generated when the buffer layer 204 and the buffer block 205 are impacted, and a temperature sensor which is arranged on the inner wall of the explosion-proof box main body 1 and is used for detecting the temperature in the explosion-proof box main body 1.
The cabinet door 7 is arranged on one side of the explosion-proof box main body 1, the outer side wall of the cabinet door 7 is provided with an observation window 3 for visually observing the interior of the explosion-proof box, and the outer side wall of the observation window 3 is also provided with a protective structure 4 for enhancing the protective capability of the observation window 3; the cabinet door 7 and the explosion-proof box body 1 are fixedly connected through the locking bolt 5, and a mounting structure 6 is arranged at the joint of the locking bolt 5 and the explosion-proof box body 1.
The control unit (not shown in the figure) comprises a display module for displaying the test data, a recording module for recording the test data and a central control module for controlling the extrusion test parameters; the central control module is respectively connected with the extrusion mechanism, the pressure sensor, the displacement measurer and the temperature sensor and used for controlling the extrusion mechanism to extrude the battery to be tested, calculating impact force generated when the battery explodes according to the measurement result of the displacement measurer, and calculating the error rate of the pressure sensor according to the calculation result and the detection result of the pressure sensor, and the central control module judges whether the detection result of the pressure sensor needs to be corrected according to the error rate and judges whether the cabinet door can be opened according to the detection result of the pressure sensor and the detection result of the temperature sensor.
Specifically, the central control module calculates an impact force Fj generated during battery explosion according to the displacement D of the buffer layer 204 and the displacement D ' of the buffer block 205, and sets Fj = [ (k × k ')/(k + k ') ] × (D + D '), where k is the elastic coefficient of the buffer layer 204 and k ' is the elastic coefficient of the buffer block 205.
Specifically, when the extruded battery explodes, the central control module compares the obtained pressure value Fj with the pressure value Fc measured by the pressure sensor,
if Fj = Fc, the central control module judges that the detection value of the pressure sensor meets the standard;
if Fj is not equal to Fc, the central control module judges that the detection value of the pressure sensor does not meet the standard, calculates the error rate delta of the detection value of the pressure sensor, selects a corresponding correction coefficient according to the error rate delta to correct the detection value of the pressure sensor to a corresponding value, and sets delta = (| Fj-Fc |)/(Fj/100).
Specifically, the central control module is provided with a first preset error rate delta 1, a second preset error rate delta 2, a third preset error rate delta 3, a first correction coefficient e1 and a second correction coefficient e2, wherein delta 1 is less than delta 2 and less than delta 3,0.8 is less than e1 and less than e2, when the central control module determines that the detection value of the pressure sensor does not meet the standard,
if delta is less than or equal to delta 1, the central control module judges that the error rate is within a normal range, and the detection value of the pressure sensor does not need to be corrected;
if delta 1 is larger than or equal to delta 2, the central control module judges that the error rate is not in a normal range, the detection value of the pressure sensor needs to be corrected, and e1 is selected to correct the detection value of the pressure sensor to a corresponding value;
if delta is larger than delta 2, the central control module judges that the error rate is not in a normal range, the detection value of the pressure sensor needs to be corrected, and e2 is selected to correct the detection value of the pressure sensor to a corresponding value.
Specifically, when the central control module selects ei to correct the detection value of the pressure sensor to a corresponding value, i =1,2 is set, the corrected detection value is recorded as Fc',
if Fj > Fc, setting Fc' = Fc x (2-ei);
if Fj < Fc, fc' = Fc × ei is set.
Specifically, the central control module is provided with a pressure preset value F0 and a temperature preset value T0, when the explosion of the battery is finished, the central control module controls the pressure sensor and the temperature sensor to respectively detect the pressure Fc ' and the temperature T inside the explosion-proof box main body 1, when Fc ' is less than or equal to F0 and T is less than or equal to T0, the central control module judges that the cabinet door 7 can be opened, and when Fc ' is greater than F0 or T is greater than T0, the central control module judges that the cabinet door cannot be opened.
Specifically, the central control module is provided with a first preset buffer layer 204 elastic coefficient k1, a second preset buffer layer 204 elastic coefficient k2, a third preset buffer layer 204 elastic coefficient k3, a first preset buffer layer 204 displacement D1 and a second preset buffer layer 204 displacement D2, wherein k1 is more than k2 and less than k3, and D1 is more than D2, when the extruded battery explodes, the central control module controls the displacement measurer to measure the displacement D of the buffer layer 204,
if D is less than or equal to D1, the elasticity coefficient of the buffer layer 204 is set to be k1 by the central control module;
if D1 is larger than D and is not larger than D2, the elasticity coefficient of the buffer layer 204 is set to be k2 by the central control module;
if D2 is less than D, the central control module sets the elastic coefficient of the buffer layer 204 to be k3.
Specifically, the central control module is provided with a first preset buffer block 205 elasticity coefficient k1', a second preset buffer block 205 elasticity coefficient k2', a third preset buffer block 205 elasticity coefficient k3', a first preset buffer block 205 displacement D1' and a second preset buffer block 205 displacement D2', wherein k1' < k2' < k3', D1' < D2', when the extrusion battery explodes, the central control module controls the displacement measurer to measure the displacement D ' of the buffer block 205,
if D ' is less than or equal to D1', the central control module sets the elasticity coefficient of the buffer block 205 to be k1';
if D1 'is less than D' and less than or equal to D2', the central control module sets the elastic coefficient of the buffer block 205 to be k2';
if D2' < D ', the central control module sets the elastic coefficient of the buffer block 205 to k3'.
Referring to fig. 5, which is a schematic side view cross-sectional structure view of an installation structure of an explosion-proof box for a battery compression test according to the present invention, the installation structure 6 includes:
a stabilizing ring 601 provided at a joint of the locking bolt 5 for fixing the locking bolt 5;
an insulating ring 605, which is arranged inside the stabilizing ring 601 and is concentric with the stabilizing ring, wherein the outer diameter of the insulating ring 605 is smaller than the inner diameter of the stabilizing ring 601; one end of the insulating ring 605, which is far away from the stabilizing ring 601, is provided with a thread block 606 which is annularly distributed about the center of the insulating ring 605 and forms a clamping structure together with the insulating ring 605; an elastic cavity 602 is formed between the insulating ring 605 and the stabilizing ring 601;
the mounting blocks 603 are arranged at one end, close to the stabilizing ring 601, inside the elastic cavity 602, and the mounting blocks 603 are annularly distributed around the center of the elastic cavity 602 and are used for fixing the clamp spring 604; the clamp spring 604 is disposed on the mounting block 603 and elastically connected to the mounting block 603.
Through the scheme, the stable butt joint capacity of the mounting structure 6 to the locking bolt 5 is well improved, and therefore the overall stable protection capacity is improved.
Referring to fig. 4, which is a schematic side view of a cross-sectional structure of a protection structure of an explosion-proof box for a battery extrusion test according to the present invention, the protection structure 4 includes:
an adhesive layer 401 disposed on the outer sidewall of the cabinet door 7 for adhering the adhesive layer 403;
attachment holes 402 arranged at equal intervals inside the attachment layer 401 for increasing an attachment area; the adhesive layer 403 is disposed at one end of the attachment hole 402 for adhesion;
and an anti-corrosion layer 404 provided at one end of the adhesive layer 403 for preventing corrosion.
The adhesion holes 402 are arranged in the adhesion layer 401 at equal intervals, and the adhesion layer 403 and the corrosion-resistant layer 404 are arranged in the same adhesion plane, so that a certain adhesion area is increased in the working process, and the overall stable protection capability is improved.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention; various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An explosion-proof case of battery extrusion test, characterized by, includes:
the battery testing device comprises an explosion-proof box main body, wherein an extrusion mechanism for extruding a battery to be tested is arranged in the explosion-proof box main body, and a locking bolt is arranged at a corner at one end of the explosion-proof box main body;
the anti-collision unit is arranged in the anti-collision box main body and used for buffering impact force generated when the battery explodes, and comprises a supporting plate, a vertical plate and a buffer block, wherein the supporting plate is arranged in the middle of the anti-collision unit, and the buffer layer used for buffering the impact force generated when the battery explodes is arranged in the supporting plate; the vertical plate is arranged at one end of the supporting plate, which is far away from the explosion-proof box, and reinforcing plates are arranged on two sides of the vertical plate and used for reinforcing the supporting and protecting capability of the anti-collision unit; the buffer block is arranged at one end of the support plate, which is far away from the vertical plate, and is used for buffering the impact force generated to the anti-collision unit when the battery explodes;
the detection module comprises a pressure sensor, a displacement measurer and a temperature sensor, wherein the pressure sensor is arranged on one side of the outer wall of the anti-collision unit, which is far away from the explosion-proof box, and is used for detecting impact force generated when the battery explodes, the displacement measurer is arranged in the anti-collision unit and is used for respectively detecting displacement generated when the buffer layer and the buffer block are impacted, and the temperature sensor is arranged on the inner wall of the main body of the explosion-proof box and is used for detecting the temperature in the main body of the explosion-proof box;
the cabinet door is arranged on one side of the explosion-proof box main body, an observation window is arranged on the outer side wall of the cabinet door and used for visually observing the interior of the explosion-proof box, and a protection structure used for enhancing the protection capability of the observation window is also arranged on the outer side wall of the observation window; the cabinet door is fixedly connected with the explosion-proof box main body through the locking bolt, and a mounting structure is arranged at the joint of the locking bolt and the explosion-proof box main body;
the control unit comprises a display module for displaying the test data, a recording module for recording the test data and a central control module for controlling the extrusion test parameters; the central control module is respectively connected with the extrusion mechanism, the pressure sensor, the displacement measurer and the temperature sensor and used for controlling the extrusion mechanism to extrude the battery to be tested, calculating impact force generated when the battery explodes according to the measurement result of the displacement measurer, and calculating the error rate of the pressure sensor according to the calculation result and the detection result of the pressure sensor, and the central control module judges whether the detection result of the pressure sensor needs to be corrected according to the error rate and judges whether the cabinet door can be opened according to the detection result of the pressure sensor and the detection result of the temperature sensor.
2. The explosion-proof box for the battery extrusion test according to claim 1, wherein the central control module calculates an impact force Fj generated when the battery explodes according to the displacement D of the buffer layer and the displacement D ' of the buffer block, and sets Fj = [ (k x k ')/(k + k ') ] × (D + D '), where k is the elastic modulus of the buffer layer and k ' is the elastic modulus of the buffer block.
3. The explosion-proof box for the battery extrusion test according to claim 2, wherein when the extruded battery explodes, the central control module compares the obtained pressure value Fj with the pressure value Fc measured by the pressure sensor,
if Fj = Fc, the central control module judges that the detection value of the pressure sensor meets the standard;
if Fj is not equal to Fc, the central control module judges that the detection value of the pressure sensor does not meet the standard, calculates the error rate delta of the detection value of the pressure sensor, selects a corresponding correction coefficient according to the error rate delta to correct the detection value of the pressure sensor to a corresponding value, and sets delta = (| Fj-Fc |)/(Fj/100).
4. The explosion-proof box for battery compression test according to claim 3, wherein the central control module is provided with a first preset error rate δ 1, a second preset error rate δ 2, a third preset error rate δ 3, a first correction coefficient e1 and a second correction coefficient e2, wherein δ 1 < δ 2 < δ 3,0.8 < e1 < e2 < 1, when the central control module determines that the detection value of the pressure sensor does not meet the standard,
if delta is less than or equal to delta 1, the central control module judges that the error rate is within a normal range, and the detection value of the pressure sensor does not need to be corrected;
if delta 1 is larger than or equal to delta 2, the central control module judges that the error rate is not in a normal range, the detection value of the pressure sensor needs to be corrected, and e1 is selected to correct the detection value of the pressure sensor to a corresponding value;
if delta is larger than delta 2, the central control module judges that the error rate is not in a normal range, the detection value of the pressure sensor needs to be corrected, and e2 is selected to correct the detection value of the pressure sensor to a corresponding value.
5. The explosion-proof box for the battery extrusion test of claim 4, wherein when ei is selected by the central control module to correct the detection value of the pressure sensor to a corresponding value, i =1,2 is set, the corrected detection value is recorded as Fc',
if Fj > Fc, setting Fc' = Fc x (2-ei);
if Fj < Fc, fc' = Fc × ei is set.
6. The explosion-proof box for the battery extrusion test of claim 5, wherein the central control module is provided with a pressure preset value F0 and a temperature preset value T0, when the explosion of the battery is finished, the central control module controls the pressure sensor and the temperature sensor to respectively detect the pressure Fc ' and the temperature T inside the explosion-proof box main body, when Fc ' is less than or equal to F0 and T is less than or equal to T0, the central control module determines that the door can be opened, and when Fc ' > F0 or T > T0, the central control module determines that the door cannot be opened.
7. The explosion-proof box for battery extrusion testing according to claim 2, wherein the central control module is provided with a first preset buffer layer elasticity coefficient k1, a second preset buffer layer elasticity coefficient k2, a third preset buffer layer elasticity coefficient k3, a first preset buffer layer displacement D1 and a second preset buffer layer displacement D2, wherein k1 < k2 < k3, D1 < D2, and when the extruded battery explodes, the central control module controls the displacement measurer to measure the displacement D of the buffer layer,
if D is less than or equal to D1, the elasticity coefficient of the buffer layer is set to be k1 by the central control module;
if D1 is larger than D and is not larger than D2, the elasticity coefficient of the buffer layer is set to be k2 by the central control module;
and if D2 is less than D, the central control module sets the elasticity coefficient of the buffer layer to be k3.
8. The explosion-proof box for battery extrusion testing according to claim 2, wherein the central control module is provided with a first preset buffer block elasticity coefficient k1', a second preset buffer block elasticity coefficient k2', a third preset buffer block elasticity coefficient k3', a first preset buffer block displacement D1' and a second preset buffer block displacement D2', wherein k1' < k2' < k3', D1' < D2', when the extruded battery explodes, the central control module controls the displacement measurer to measure the displacement D ' of the buffer block,
if D ' is less than or equal to D1', the central control module sets the elasticity coefficient of the buffer block as k1';
if D1 'is less than D' and less than or equal to D2', the central control module sets the elasticity coefficient of the buffer block to be k2';
if D2' < D ', the central control module sets the elasticity coefficient of the buffer block to be k3'.
9. The battery crush test explosion proof tank of claim 1, wherein the mounting structure comprises:
the stabilizing ring is arranged at the joint of the locking bolt and used for fixing the locking bolt;
the insulating ring is arranged inside the stabilizing ring and is concentric with the stabilizing ring, and the outer diameter of the insulating ring is smaller than the inner diameter of the stabilizing ring; one end of the insulating ring, which is far away from the stabilizing ring, is provided with a thread block which is annularly distributed relative to the center of the insulating ring and forms a clamping structure together with the insulating ring; an elastic cavity is formed between the insulating ring and the stabilizing ring;
the mounting blocks are arranged at one end, close to the stabilizing ring, in the elastic cavity, and are distributed annularly about the circle center of the elastic cavity and used for fixing the clamp spring; the clamp spring is arranged on the mounting block and is elastically connected with the mounting block.
10. The battery crush test explosion proof tank of claim 1, wherein the protective structure comprises:
the adhesion layer is arranged on the outer side wall of the cabinet door and used for adhering the adhesion layer;
the attachment holes are arranged in the attachment layer at equal intervals and used for increasing the attachment area; the adhesive layer is arranged at one end of the attachment hole;
and the anti-corrosion layer is arranged at one end of the bonding layer.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206194914U (en) * | 2016-10-28 | 2017-05-24 | 合肥国轩高科动力能源有限公司 | A safety test device for battery |
| CN113504136A (en) * | 2021-09-10 | 2021-10-15 | 深圳市世开化工有限公司 | Impact resistance determination method of PET (polyethylene terephthalate) toughening agent |
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| JPS52135409A (en) * | 1976-05-07 | 1977-11-12 | Motoo Fukuda | Explosionnproof means for accumulated containers having valve members |
| FR2673442B1 (en) * | 1991-03-01 | 1998-08-28 | Elf Aquitaine | DEVICE FOR MEASURING THE MOVEMENT OF AN INJECTION HEAD OF A DRILLING MAT. |
| CN207952332U (en) * | 2018-03-09 | 2018-10-12 | 扬力集团股份有限公司 | A kind of half-closed two point high speed battery steel shell punching production forcing press |
| BR102019009861A2 (en) * | 2019-05-15 | 2020-11-24 | Sense Eletrônica Ltda. | device for monitoring and positioning valves |
| CN210720508U (en) * | 2020-03-09 | 2020-06-09 | 中国电子技术标准化研究院 | Vacuum explosion-proof box for battery safety test |
| CN214703073U (en) * | 2021-03-26 | 2021-11-12 | 天津市新策电子设备科技有限公司 | Multifunctional battery test system based on high-power program control |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN206194914U (en) * | 2016-10-28 | 2017-05-24 | 合肥国轩高科动力能源有限公司 | A safety test device for battery |
| CN113504136A (en) * | 2021-09-10 | 2021-10-15 | 深圳市世开化工有限公司 | Impact resistance determination method of PET (polyethylene terephthalate) toughening agent |
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