CN114440974A - Battery expansion displacement and temperature in-situ measuring device - Google Patents
Battery expansion displacement and temperature in-situ measuring device Download PDFInfo
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- CN114440974A CN114440974A CN202210054426.XA CN202210054426A CN114440974A CN 114440974 A CN114440974 A CN 114440974A CN 202210054426 A CN202210054426 A CN 202210054426A CN 114440974 A CN114440974 A CN 114440974A
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 50
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 17
- 238000009529 body temperature measurement Methods 0.000 claims description 10
- 230000003139 buffering effect Effects 0.000 claims description 9
- 230000003044 adaptive effect Effects 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 14
- 230000008569 process Effects 0.000 abstract description 14
- 238000012625 in-situ measurement Methods 0.000 abstract description 12
- 238000005259 measurement Methods 0.000 description 16
- 238000007599 discharging Methods 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000010261 cell growth Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920005749 polyurethane resin Polymers 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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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
- 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
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
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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
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/16—Elements for restraining, or preventing the movement of, parts, e.g. for zeroising
Abstract
The invention discloses a battery expansion displacement and temperature in-situ measuring device, which comprises: the fixing device is provided with a plurality of sensor clamps surrounding the preset positions of the batteries; the clamping device is arranged on the fixing device and is used for respectively clamping two opposite end surfaces of the battery so that the battery is fixed at a preset position of the battery; the clamping device comprises a cylindrical battery clamping device for clamping a cylindrical battery and a square battery clamping device for clamping a square battery; and the measuring device comprises a plurality of dial gauges and/or infrared temperature sensors which are respectively arranged on the sensor clamp and used for measuring the temperature and the displacement of the side surface of the battery. The device can simultaneously measure the radial displacement or the in-situ measurement of the surface temperature of the multi-size cylindrical battery during the working process. The special fixture can be adopted to adapt to batteries with different sizes.
Description
Technical Field
The invention relates to the field of battery measurement, in particular to a battery expansion displacement and temperature in-situ measurement device.
Background
The lithium battery is used as a mobile power supply, and has extremely wide application in new energy fields such as power batteries, energy storage power stations and the like and in daily production and life. The expansion displacement and temperature change are necessarily accompanied in the battery using process, and the influence on the capacity and the service life of the battery and other battery performances is great, so the expansion displacement and temperature change of the battery are always concerned. Under the background, a device for simultaneously measuring the expansion displacement and the temperature of the battery in situ comes from work, while a device for simultaneously measuring the radial displacement and the temperature of the cylindrical battery in situ is more rarely researched, so that the measurement data provided by the invention greatly promotes the understanding and research of scientific research personnel on the battery.
However, the existing in-situ measurement device for radial displacement and temperature of the battery has the following problems:
1. the existing measuring device mainly measures the square battery, and lacks a measuring device for the radial displacement and the temperature of the cylindrical battery;
2. the existing in-situ measurement device measures the radial displacement and the temperature respectively after the radial displacement and the temperature are usually measured separately, namely after decoupling, the simultaneous in-situ measurement of the radial displacement and the temperature of the battery in the charging and discharging process of the battery cannot be finished, and the analysis of the real relevance under the multi-field coupling scene is not facilitated;
3. the current battery in-situ measurement and measurement device can not realize the simultaneous measurement of temperature and expansion displacement of a square battery and a cylindrical battery on the same measurement platform basically;
4. most devices can not realize the simultaneous measurement of radial displacement and temperature of cylindrical batteries and square batteries, are not in line with the actual multi-physical field process, have poor reliability, have very harsh measurement conditions, generally need the auxiliary measurement of large-scale equipment such as thermostated containers, and have poor practicability and economical efficiency.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present invention provides a device for in-situ measurement of battery expansion displacement and temperature, so as to solve the above-mentioned technical problems.
In order to achieve the above object, the present invention provides an in-situ battery expansion displacement and temperature measuring apparatus, comprising:
the fixing device is provided with a plurality of sensor clamps surrounding the preset positions of the batteries;
the clamping device is arranged on the fixing device and is used for respectively clamping two opposite end surfaces of the battery so that the battery is fixed at a preset position of the battery; the clamping device comprises a cylindrical battery clamping device for clamping a cylindrical battery and a square battery clamping device for clamping a square battery;
and the measuring device comprises a plurality of dial gauges and/or infrared temperature sensors which are respectively arranged on the sensor clamp and used for measuring the temperature and the displacement of the side surface of the battery.
The invention is further improved in that: the fixing device comprises a measuring device upper top cover and a base which are respectively positioned above and below the preset position of the battery; and a plurality of groups of sensor slide rails for fixing the sensor clamp are arranged between the top cover and the base of the measuring device.
The invention is further improved in that: the cylindrical battery clamping device comprises an upper cylindrical battery clamp arranged on an upper top cover of the measuring device and a lower cylindrical battery clamp arranged on the upper surface of the base; the cylindrical battery upper clamp and the cylindrical battery lower clamp are respectively provided with funnel-shaped grooves with opposite openings so as to be adapted to cylindrical batteries with different diameters; telescopic thimbles are arranged in the funnel-shaped grooves so as to be in contact with electrodes of the cylindrical batteries; the two telescopic thimbles are respectively connected with the positive electrode lead and the negative electrode lead.
The invention is further improved in that:
the top of the cylindrical battery upper clamp is provided with an upper clamp ejector rod, and the upper clamp ejector rod of the cylindrical battery upper clamp is inserted into a mounting hole of an upper top cover of the measuring device; the upper clamp ejector rod is of a telescopic structure, and the clamping force of the upper clamp of the cylindrical battery on the top surface of the cylindrical battery is adjusted through a micro-displacement adjusting knob on the upper clamp ejector rod;
the bottom of the cylindrical battery lower clamp is provided with a mounting height adjusting mechanism.
The invention is further improved in that: the inner walls of funnel-shaped grooves of the cylindrical battery upper clamp and the cylindrical battery lower clamp are respectively embedded with adaptive pads, the thickness of the adaptive pads ranges from 0.8 mm to 1.2mm, and the heat conductivity coefficient ranges from 0.025 mm to 0.035W/(m.K).
The invention is further improved in that: the square battery clamping device comprises a cylindrical guide pin, an upper square battery clamp arranged on an upper top cover of the measuring device and a lower square battery clamp arranged on the upper surface of the base; the square battery upper clamp and the square battery lower clamp are respectively provided with wedge-shaped grooves with opposite openings so as to be adapted to square batteries with different sizes; the number of the cylindrical guide pins is at least two, the cylindrical guide pins are arranged in parallel, the bottom ends of the cylindrical guide pins are fixedly connected with the square battery lower clamp, and the top ends of the cylindrical guide pins are inserted into corresponding guide holes of the square battery upper clamp so as to restrict the degree of freedom between the square battery upper clamp and the square battery lower clamp.
The invention is further improved in that: the bottom of the wedge groove of square battery upper clamp and square battery lower clamp all is provided with the buffering piece of tightening in advance, the buffering piece of tightening in advance is connected with flexible pretension pole, and by flexible pretension pole to the notch of wedge groove promotes, so that buffering pretension piece top pushes away square battery's top terminal surface or bottom terminal surface.
The invention is further improved in that: the sensor slide rail is in a slit shape; the sensor clamp is strip-shaped, two ends of the sensor clamp are respectively inserted into one sensor slide rail, and the sensor clamp is fixed with the sensor slide rail through a sensor clamp fixing nut; a sensor mounting hole for the measurement device to penetrate through is formed in the middle of the sensor clamp; and a sensor clamp clamping fine adjustment knob is arranged on the sensor clamp, and a screw rod of the sensor clamp extends into the sensor mounting hole and is used for clamping the measuring device.
The invention is further improved in that: a knob type strong hydraulic magnetic device is arranged in the base so as to be adsorbed on a steel structure.
The invention is further improved in that: the device also comprises a charge-discharge instrument connected with the clamped battery and a computer in communication connection with the measuring device.
The device provided by the invention has the following technical effects:
1. the invention realizes the in-situ measurement of the radial displacement or the surface temperature of the multi-size cylindrical battery in the working process.
2. The invention realizes the simultaneous measurement of the radial displacement and the surface temperature of the multi-size cylindrical battery under different working conditions.
3. The invention realizes the simultaneous measurement of temperature and expansion displacement of the square battery or the cylindrical battery on the same measuring platform.
4. The invention realizes the simultaneous in-situ measurement of the radial displacement and the temperature of the cylindrical battery or the square battery, conforms to the actual multi-physical-field process, has higher reliability and very loose measurement conditions, does not need large-scale equipment such as a thermostat and the like for auxiliary measurement, and has better practicability and economy.
5. The invention realizes higher measurement precision on the premise of low cost and simple operation, has simple equipment structure, longer design life, convenient installation and very high cost performance, and is very suitable for relevant laboratories and scientific research personnel.
Drawings
FIG. 1 is a perspective view of a battery expansion displacement and temperature in-situ measurement device of the present invention;
FIG. 2 is a perspective view of a sensor fixture;
FIG. 3 is a perspective view of a clamp on a cylindrical battery;
FIG. 4 is a half-sectional top view of the in-situ cell expansion displacement and temperature measurement device;
FIG. 5 is a perspective view of a prismatic battery clamping device;
FIG. 6 is a side view of a prismatic battery clamping assembly;
FIG. 7 is a perspective view of the upper clamp for a prismatic battery;
FIG. 8 is a schematic diagram of the in-situ measurement device for cell expansion displacement and temperature during use.
Wherein the reference numerals are:
101-base, 102-wire guide groove; 2-knob type strong hydraulic magnetic device; 3-dial indicator; 401-sensor clamp fixing nut, 402-sensor clamp, 403-sensor clamp clamping fine adjustment knob; 501-a sensor sled; 502-square battery upper clamp; 601-cylindrical battery upper clamp, 602-micro displacement adjusting knob, 603-upper clamp ejector rod, 604-cylindrical battery adaptation pad, 605-cylindrical guide pin, 606-buffer pre-tightening piece, 607-square battery clamp heat dissipation patch, 608-telescopic pre-tightening rod, 609-square battery clamp guide hole; 701-a top cover on the measuring device, 702-a pilot hole; 801-cylindrical cell, 802-positive wire, 803-negative wire, 804-square cell, 805-positive wire, 806-negative wire; 901-cylindrical battery lower clamp, 902-square battery lower clamp; 10-infrared temperature measuring sensor.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the drawings only show the components related to the present invention rather than the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.
The first embodiment is as follows: the present embodiment measures the radial displacement of the cylindrical battery 801 during charging and discharging using only the battery expansion displacement and temperature in-situ measurement device. The specific manner of measuring the radial direction of the cylindrical battery 801 to be measured in the charging and discharging process is as follows:
as shown in fig. 1, 2 and 3, the invention comprises a measuring device comprising a clamping device, a measuring device and a fixing device. The devices were first assembled prior to measurement.
In the assembling process, firstly, 2 sensor clamps 402 are installed on the sensor slide rail 501 of the main body part of the base 101 of the fixing device, the sensor clamps 402 are adjusted to proper positions, and the sensor clamps 402 are fixed with the sensor slide rail 501 through fixing nuts 401 at two ends of the sensor clamps 402. Then, a cylindrical battery lower clamp 901 of the cylindrical battery clamping device is installed in an installation hole in the geometric center of the base 101, and the cylindrical battery lower clamp 901 is in clearance fit with the installation hole in the center of the base 101 to ensure concentricity; then, the cylindrical battery upper clamp 601 is installed in an installation hole in the geometric center of the top cover 701 on the measuring device; the mounting hole of the top cover 701 on the measuring device and the mounting hole of the base 101 are coaxially arranged; the cylindrical battery upper clamp 601 is inserted into a mounting hole in the center of an upper top cover 701 of the measuring device through an upper clamp ejector rod 603 at the top of the cylindrical battery upper clamp; the mounting hole at the center of the upper top cover 701 of the measuring device is in clearance fit with the ejector rod 603 of the upper clamp, so that high concentricity is ensured.
The upper clamp ejector rod 603 is of a telescopic structure, the top of the upper clamp ejector rod is provided with a micro-displacement adjusting knob 602, and the bottom end of the upper clamp ejector rod 603 can stretch out and draw back by twisting the micro-displacement adjusting knob 602, so that the vertical position of the upper clamp 601 of the cylindrical battery can be adjusted.
The upper surface of the cylindrical battery lower clamp 901 and the cylindrical battery upper clamp 601 are respectively provided with funnel-shaped grooves with opposite openings and overlapped axes so as to adapt to cylindrical batteries 801 with different diameters. The funnel-shaped grooves of the cylindrical battery lower clamp 901 and the cylindrical battery upper clamp 601 are respectively provided with a telescopic thimble which can be telescopic along the axial direction and is used for contacting with the electrode on the end face of the cylindrical battery 801. The retractable pins are spring-driven retractable pins, and the retractable pins in the cylindrical battery lower clamp 901 and the cylindrical battery upper clamp 60 are respectively connected with the negative lead 803 and the positive lead 802. Wherein, the negative lead 803 is led out from the lead groove 102 on the base 101; the positive electrode lead 802 is led out from the top opening of the top clamp mandril 603.
The inner surfaces of the funnel-shaped grooves of the cylindrical battery lower clamp 901 and the cylindrical battery upper clamp 601 are provided with adapter pads 604, the adapter pads 604 are made of porous polyurethane resin, the thickness of the adapter pads is 1mm, and the thermal conductivity is 0.03W/m.K. The adapter pad 604 is used for directly contacting with the edge of the cylindrical battery 801, the heat conduction capability of the adapter pad is close to that of air, and abnormal heat loss of the cylindrical battery 801 caused by contact with the cylindrical battery lower clamp 901 and the cylindrical battery upper clamp 601 can be avoided, so that the accuracy of a test result is ensured.
After the cylindrical battery lower jig 901 and the cylindrical battery upper jig 601 are mounted, the cylindrical battery 801 is clamped. Firstly, the distance between the cylindrical battery lower clamp 901 and the cylindrical battery upper clamp 601 is increased (the distance is adjusted by adjusting the mounting height adjusting mechanism at the bottom of the cylindrical battery lower clamp 901 and/or the micro-displacement adjusting knob 602 of the cylindrical battery upper clamp 601), so that the cylindrical battery 801 to be tested is positioned between the cylindrical battery lower clamp 901 and the cylindrical battery upper clamp 601, and the distance between the cylindrical battery lower clamp 901 and the cylindrical battery upper clamp 601 is reduced, so that the cylindrical battery 801 is preliminarily clamped by the cylindrical battery lower clamp 901 and the cylindrical battery upper clamp. After the preliminary clamping, the top end face of the cylindrical battery 801 is accommodated in the funnel-shaped groove of the cylindrical battery upper clamp 601, and the bottom end face of the cylindrical battery 801 is accommodated in the funnel-shaped groove of the cylindrical battery lower clamp 901. The clamping force can then be adjusted by means of a micro-displacement adjustment knob 602 of the clamp 601 on the cylindrical battery.
After the cylindrical battery 801 is clamped, a desired measuring device can be disposed on each sensor holder 402. In this embodiment, the measuring device only adopts the dial indicator 3, the dial indicator 3 is inserted into the sensor mounting hole and is fixed by clamping the fine adjustment knob 403 by the sensor clamp, and the probe of the dial indicator 3 abuts against the side surface of the cylindrical battery 801 to be measured. The dial gauge 3 may be zeroed before the measurement starts. In one embodiment, the dial indicator 3 may be a digital dial indicator.
As shown in fig. 1 and 8, after the clamping is completed, the whole measuring device can be placed on an iron test bed and adsorbed by the iron test bed through the knob-type strong hydraulic magnetic device 2 of the base 101. The positive lead 802 and the negative lead 803 are then connected to a charge and discharge meter and a computer is connected to each dial gauge 3 to receive readings. And the computer is in communication connection with the charging and discharging instrument. And then, starting a detection program on the computer, charging and discharging the cylindrical battery 801 to be detected by the charging and discharging instrument according to a preset program, and detecting the displacement of the side wall of the battery caused by expansion in the charging and discharging process by the dial indicator 3.
Example two: only the surface temperature of the cylindrical battery 801 to be measured during the charge and discharge processes was measured.
The main difference between the present embodiment and the first embodiment is that the measuring device in the present embodiment only uses the infrared temperature sensor 10.
Example three: as shown in fig. 1 and fig. 4, the main difference between the present embodiment and the second embodiment is that the measuring device in the present embodiment simultaneously adopts the infrared temperature sensor 10 and the dial indicator 3 to simultaneously measure the expansion displacement and the temperature change of the cylindrical battery to be measured during the charging and discharging processes.
Example four: the main difference between this embodiment and the first embodiment is that a square battery clamping device is used to clamp the square battery 804 instead of a cylindrical battery clamping device. The test procedure and the mounting of the measuring device are identical to those described in the first to third embodiments, except for the square battery clamping device.
As shown in fig. 1, 5, 6, and 7, in the present embodiment, the square battery clamping device includes a cylindrical guide pin 605, a square battery upper clamp 502 mounted on an upper top cover 701 of the measuring device, and a square battery lower clamp 902 mounted on an upper surface of the base 101. The prismatic cell upper clamp 502 and the prismatic cell lower clamp 902 are mounted in a similar manner to the cylindrical cell clamping device. The top of the square battery upper clamp 502 is also provided with an upper clamp ejector rod 603, the upper clamp ejector rod 603 is used for being inserted into a mounting hole of an upper top cover 701 of the measuring device, and the top end of the upper clamp ejector rod 603 is also provided with a micro-displacement adjusting knob 602.
The upper square battery clamp 502 and the lower square battery clamp 902 respectively have wedge-shaped grooves with opposite openings to adapt to square batteries 804 with different sizes. In the clamping process, the top end face and the bottom end face of the square battery 804 are respectively clamped in the two wedge-shaped grooves; the use of wedge-shaped grooves allows the prismatic battery clamping device to be adapted to prismatic batteries 804 of different sizes.
In the clamping process, the wedge-shaped grooves of the upper square battery clamp 502 and the lower square battery clamp 902 need to be parallel to each other, and in order to maintain the parallel relationship between the two clamps, in this embodiment, two cylindrical guide pins 605 are used for guiding to restrict the degree of freedom between the upper square battery clamp 502 and the lower square battery clamp 902, so as to prevent the upper square battery clamp 502 and the lower square battery clamp 902 from rotating.
In one embodiment, the cylindrical guide pins 605 are arranged in parallel, the bottom ends of the cylindrical guide pins are fixedly connected to the lower prismatic battery jig 902, and the top ends of the cylindrical guide pins 605 are inserted into the corresponding guide holes 609 of the upper prismatic battery jig 502. During the process of clamping the battery, the square battery upper clamp 502 can only slide along the cylindrical guide pin 605, and cannot rotate or move in other directions.
In one embodiment, the bottom of the wedge-shaped groove of the upper prismatic battery clamp 502 and the bottom prismatic battery clamp 902 are provided with the buffering pre-tightening tabs 606. The buffering pre-tightening sheet 606 is connected with the telescopic pre-tightening rod 608, and is pushed by the telescopic pre-tightening rod 608 to the notch of the wedge-shaped groove, so that the buffering pre-tightening sheet 606 pushes the top end face or the bottom end face of the square battery 804.
The inner surfaces of the wedge-shaped grooves of the upper square battery clamp 502 and the lower square battery clamp 902 are also provided with adaptive pads 607, and the adaptive pads 607 are made of porous polyurethane resin, the thickness of the adaptive pads is 1mm, and the thermal conductivity is 0.03W/m.K. The adapter pad 607 is intended to be in direct contact with the edge of the prismatic cell 804, and its thermal conductivity is close to that of air. In this embodiment, the positive electrode lead 805 and the negative electrode lead 806 of the rectangular battery to be detected are led out from the side of the rectangular battery 804.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. An in-situ battery expansion displacement and temperature measurement device, comprising:
a fixture device having a plurality of sensor holders (402) mounted around a predetermined position of the battery;
the clamping device is arranged on the fixing device and is used for respectively clamping two opposite end surfaces of the battery so that the battery is fixed at a preset position of the battery; the clamping device comprises a cylindrical battery clamping device for clamping a cylindrical battery (801) and a square battery clamping device for clamping a square battery (804);
the measuring device comprises a plurality of dial indicators (3) and/or infrared temperature sensors (10) which are respectively arranged on the sensor clamp (402) and used for measuring the temperature and the displacement of the side face of the battery.
2. The in-situ battery expansion displacement and temperature measurement device of claim 1, wherein: the fixing device comprises a measuring device upper top cover (701) and a base (101) which are respectively positioned above and below the preset position of the battery; a plurality of groups of sensor slide rails (501) for fixing the sensor clamp (402) are arranged between the upper top cover (701) of the measuring device and the base (101).
3. The in-situ battery expansion displacement and temperature measurement device of claim 2, wherein: the cylindrical battery clamping device comprises a cylindrical battery upper clamp (601) arranged on an upper top cover (701) of the measuring device and a cylindrical battery lower clamp (901) arranged on the upper surface of the base (101); the cylindrical battery upper clamp (601) and the cylindrical battery lower clamp (901) are respectively provided with funnel-shaped grooves with opposite openings so as to adapt to cylindrical batteries (801) with different diameters; telescopic thimbles are arranged in the funnel-shaped grooves so as to be in contact with electrodes of the cylindrical battery (801); the two telescopic thimbles are respectively connected with the positive electrode lead and the negative electrode lead.
4. The in-situ battery expansion displacement and temperature measurement device of claim 3, wherein:
the top of the cylindrical battery upper clamp (601) is provided with an upper clamp ejector rod (603), and the upper clamp ejector rod (603) of the cylindrical battery upper clamp (601) is inserted into a mounting hole of the measuring device upper top cover (701); the upper clamp ejector rod (603) is of a telescopic structure, and the clamping force of the cylindrical battery upper clamp (601) on the top surface of the cylindrical battery (801) is adjusted through a micro-displacement adjusting knob (602) on the upper clamp ejector rod (603);
the bottom of the cylindrical battery lower clamp (901) is provided with a mounting height adjusting mechanism.
5. The in-situ battery expansion displacement and temperature measurement device of claim 3, wherein: the inner walls of funnel-shaped grooves of the cylindrical battery upper clamp (601) and the cylindrical battery lower clamp (901) are respectively embedded with an adaptive pad, the thickness of the adaptive pad is 0.8-1.2 mm, and the heat conductivity coefficient is 0.025-0.035W/(m.K).
6. The in-situ battery expansion displacement and temperature measurement device of claim 2, wherein: the square battery clamping device comprises a cylindrical guide pin (605), a square battery upper clamp (502) arranged on an upper top cover (701) of the measuring device and a square battery lower clamp (902) arranged on the upper surface of the base (101); the square battery upper clamp (502) and the square battery lower clamp (902) are respectively provided with wedge-shaped grooves with opposite openings so as to adapt to square batteries (804) with different sizes; the number of the cylindrical guide pins (605) is at least two, the cylindrical guide pins (605) are arranged in parallel, the bottom ends of the cylindrical guide pins are fixedly connected with the square battery lower clamp (902), and the top ends of the cylindrical guide pins are inserted into corresponding guide holes of the square battery upper clamp (502) so as to restrict the degree of freedom between the square battery upper clamp (502) and the square battery lower clamp (902).
7. The in-situ battery expansion displacement and temperature measurement device of claim 6, wherein: the bottom of the wedge-shaped groove of square battery upper clamp (502) and square battery lower clamp (902) all is provided with buffering pretension piece (606), buffering pretension piece (606) is connected with flexible pretension pole 608, and by flexible pretension pole 608 to the notch of wedge-shaped groove promotes, so that buffering pretension piece (606) top end face or bottom end face of top of pushing square battery (804).
8. The in-situ battery expansion displacement and temperature measurement device of claim 2, wherein: the sensor slide rail (501) is in a slit shape; the sensor clamp (402) is strip-shaped, two ends of the sensor clamp are respectively inserted into one sensor slide rail (501), and the sensor clamp is fixed with the sensor slide rail (501) through a sensor clamp fixing nut (401); a sensor mounting hole for a measuring device to penetrate through is formed in the middle of the sensor clamp (402); a sensor clamp clamping fine adjustment knob (403) is arranged on the sensor clamp (402), and a screw rod of the sensor clamp clamping fine adjustment knob extends into the sensor mounting hole and is used for clamping the measuring device.
9. The in-situ battery expansion displacement and temperature measurement device of claim 2, wherein: a knob type strong hydraulic magnetic device (2) is arranged in the base so as to be adsorbed on a steel structure.
10. The in-situ battery expansion displacement and temperature measuring device of claim 2, further comprising a charge and discharge meter connected to the clamped battery and a computer communicatively connected to the measuring device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210054426.XA CN114440974B (en) | 2022-01-18 | 2022-01-18 | Battery expansion displacement and temperature in-situ measurement device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210054426.XA CN114440974B (en) | 2022-01-18 | 2022-01-18 | Battery expansion displacement and temperature in-situ measurement device |
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| CN114440974B CN114440974B (en) | 2024-01-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115061055A (en) * | 2022-08-18 | 2022-09-16 | 深圳市睿智通科技有限公司 | Lithium ion battery operating condition monitoring comprehensive experiment equipment for new energy storage |
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