CN116147815A - Battery module expansion force measurement tool - Google Patents

Battery module expansion force measurement tool Download PDF

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Publication number
CN116147815A
CN116147815A CN202211679872.6A CN202211679872A CN116147815A CN 116147815 A CN116147815 A CN 116147815A CN 202211679872 A CN202211679872 A CN 202211679872A CN 116147815 A CN116147815 A CN 116147815A
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CN
China
Prior art keywords
plate
module
fixing
extrusion
battery module
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Pending
Application number
CN202211679872.6A
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Chinese (zh)
Inventor
戚澎
仝翠英
司宗生
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Wuhan Lishen Power Cell System Technology Co ltd
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Wuhan Lishen Power Cell System Technology Co ltd
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Application filed by Wuhan Lishen Power Cell System Technology Co ltd filed Critical Wuhan Lishen Power Cell System Technology Co ltd
Priority to CN202211679872.6A priority Critical patent/CN116147815A/en
Publication of CN116147815A publication Critical patent/CN116147815A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

The invention provides a battery module expansion force measurement tool which comprises a left extrusion fixing plate, a right extrusion fixing plate and a fixing and clamping device, wherein the left extrusion fixing plate and the right extrusion fixing plate are symmetrically arranged, the fixing and clamping device is arranged above the left extrusion fixing plate and the right extrusion fixing plate, the bottoms of the left extrusion fixing plate and the right extrusion fixing plate are fixedly connected through two long screws, the measurement tool is simple in structure, convenient to operate, small in occupied area and convenient to move, and can smoothly move into an existing high-low temperature test box to measure the expansion force generated by a battery module in the cyclic test process, so that important working reference is provided for the design of the battery module, the safety performance of the battery module is effectively promoted, and great production practice significance is achieved.

Description

Battery module expansion force measurement tool
Technical Field
The invention relates to the technical field of entrance and exit pest quarantine treatment, in particular to a battery module expansion force measuring tool.
Background
At present, the lithium ion battery has the advantages of high specific energy, multiple recycling times, long storage time and the like, is widely applied to portable electronic equipment (such as mobile phones, digital cameras and portable computers) and is widely applied to large and medium-sized electric equipment such as electric automobiles, electric bicycles, electric tools and the like, so that the performance requirement on the lithium ion battery is higher and higher.
With the continuous development of new energy technology, the energy density of the lithium ion battery core continuously rises, and the internal pressure of the battery core becomes large after multiple charge and discharge cycles, so that expansion force can be generated. The occurrence of expansion force can cause damage to the battery cell and the battery module.
For the battery cell, the expansion force is mainly caused by the internal negative electrode of the battery cell in the circulation process, so that the thickness of the pole piece is increased. Because the size of the module is fixed, the cells are mutually expanded to generate acting force, and finally the module generates larger expansion force. When the module binding force intensity is insufficient, the module expansion force is too large, so that the module structure is damaged, the size of the module is enlarged, the electric connection and the structural connection are affected, the failure occurs in the vibration process, and the whole vehicle is finally caused to be short-circuited.
Therefore, there is an urgent need to develop a product for measuring the expansion force generated by a battery module including a plurality of battery cells, thereby providing a working reference for the design of the battery module and further promoting the improvement of the safety performance of the battery module.
Disclosure of Invention
The invention aims to provide a battery module expansion force measuring tool.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the utility model provides a battery module expansion force measurement frock, includes left side extrusion fixed plate (1), right side extrusion fixed plate (2) and fixed clamping device (7), left side extrusion fixed plate (1) and right side extrusion fixed plate (2) symmetry set up, and its top is equipped with fixed clamping device (7), left side extrusion fixed plate (1) and right side extrusion fixed plate (2) bottom is through two long screw rods (3) fixed connection, wherein,
the right side (inner side) of the left side extrusion fixing plate (1) is sequentially provided with a first partition plate (4), a pressure sensor (5) and a second partition plate (6); a square space for placing a battery module (8) for measuring the expansion force of the module is arranged between the second partition plate (6) and the right extrusion fixing plate (2);
the fixing and clamping device (7) comprises an L-shaped first clamping plate (70), an L-shaped second clamping plate (71), a first fixing brace (72) and a second fixing brace (73), wherein the L-shaped first clamping plate (70) is fixedly arranged below the first fixing brace (72), the L-shaped second clamping plate (71) is fixedly arranged below the second fixing brace (73), the first fixing brace (72) and the second fixing brace (73) are partially stacked and fixedly connected, the L-shaped first clamping plate (70) is arranged above the left side extrusion fixing plate (1), and the L-shaped second clamping plate (71) is arranged above the right side extrusion fixing plate (2).
Preferably, the battery module expansion force measurement tool comprises a module main body, a module front end plate (80), a module rear end plate (81), a module left side plate (82), a module right side plate (83), a bottom support plate (84) and an insulating protection layer (85) used for insulation are arranged on the periphery of the module main body, the module left side plate (82) and the module right side plate (83) are respectively located on the front side and the rear side of the module main body, the module front end plate (80) and the module rear end plate (81) are respectively located at the left end and the right end of the module main body, the module rear end plate (81) is in contact with a left side extrusion fixing plate (1), the module front end plate (80) is in contact with a right side extrusion fixing plate (2), the bottom support plate (84) is located at the bottom of the module main body, and the insulating protection layer (85) is located at the top of the module main body.
Preferably, in the above-mentioned battery module expansion force measurement tool, the module main body is composed of a plurality of battery cells longitudinally arranged in parallel, and the battery cells are vertically arranged with the module left side plate (82) or the module right side plate (83) (one end of each battery cell is contacted with the module left side plate (82) or the module right side plate (83)).
Preferably, in the above battery module expansion force measurement tool, the module main body is composed of two rows of longitudinally parallel electric cores.
The fixing and clamping device (7) is positioned right above the battery module (8) and is used for clamping and fixing the battery module (8) to the left side extrusion fixing plate (1) and the right side extrusion fixing plate (2).
Preferably, in the above-mentioned battery module expansion force measurement tool, two first screw holes are provided on one side of the L-shaped first clamping plate (70), the first fixing brace (72) is provided with second screw holes at positions corresponding to the first screw holes, and two third screw holes are provided at equal distance positions in the same side direction of the two second screw holes, and the adjusting bolt is in threaded connection with the first screw holes and the second screw holes corresponding to the positions in sequence, so that the L-shaped first clamping plate (70) is fixedly connected with the first fixing brace (72);
two fourth screw holes are formed in one side of the L-shaped second clamping plate (71), and fifth screw holes are formed in positions, corresponding to the fourth screw holes, of the second fixing brace (73) respectively; two sixth screw holes are formed in the same side direction of the two fifth screw holes at equal distance, and the adjusting bolt is sequentially connected with the fourth screw hole and the fifth screw hole which correspond to the positions in a threaded manner, so that the L-shaped second clamping plate (71) is fixedly connected with the second fixing brace (73);
the first fixing brace (72) is further provided with two long waist-shaped first through holes, the second fixing brace (73) is provided with two long waist-shaped second through holes, the first through holes are connected with the second through holes through adjusting bolts and nuts, and therefore the first fixing brace (72) is fixedly connected with the second fixing brace (73), and position adjustment can be conducted.
Preferably, the above-mentioned battery module expansion force measures frock, there are two long waist type third through-holes on the extrusion face of left side extrusion fixed plate (1), there are two long waist type fourth through-holes on the extrusion face of right side extrusion fixed plate (2), long screw rod (3) are worn out and are fixed through nut and extrusion face by corresponding third through-hole and fourth through-hole, in the use, extrude right side extrusion fixed plate (2) with left side extrusion fixed plate (1) behind the suitable scope, under the state of tight module of clamp, can make long screw rod (3) pass and fasten with the nut through the long waist type through-hole on it.
Preferably, in the above-mentioned battery module expansion force measurement tool, the bottoms of the module front end plate (80) and the module rear end plate (81) are respectively provided with a press rivet nut, the corresponding position of the bottom support plate (84) is provided with a counter bore, and the press rivet nuts are connected with the counter bores at the corresponding positions.
The beneficial effects are that:
the expansion force measuring tool for the battery module has the advantages of simple structure, convenience in operation, small occupied area and convenience in movement, can smoothly move into the existing high-low temperature test box to measure the expansion force generated in the cyclic test process of the battery module, provides an important working reference for the design of the battery module, effectively promotes the improvement of the safety performance of the battery module, and has great production practice significance.
Drawings
Fig. 1 is a schematic view showing an assembled state of the expansion force measuring tool for a battery module according to the present invention when an expansion force is measured for one battery module;
fig. 2 is a schematic structural view of the expansion force measuring tool for the battery module according to the present invention;
fig. 3 is a schematic structural view of a fixing and clamping device of the expansion force measuring tool for the battery module;
fig. 4 is a schematic diagram showing the independent state of a battery module of the battery module expansion force measuring tool according to the present invention;
fig. 5 is a schematic diagram of an insulation protection layer structure of the battery module expansion force measuring tool according to the present invention.
Detailed Description
The technical scheme of the present invention will be clearly and completely described in the following in connection with the embodiments of the present invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
Example 1
As shown in fig. 1-5, the battery module expansion force measuring tool comprises a left extrusion fixing plate 1, a right extrusion fixing plate 2 and a fixing clamping device 7, wherein the left extrusion fixing plate 1 and the right extrusion fixing plate 2 are symmetrically arranged, the fixing clamping device 7 is arranged above the left extrusion fixing plate 1, the bottoms of the left extrusion fixing plate 1 and the right extrusion fixing plate 2 are fixedly connected through two long screws 3,
the right side (inner side) of the left side extrusion fixing plate 1 is sequentially provided with a first baffle plate 4, a pressure sensor 5 and a second baffle plate 6, wherein the pressure sensor can be a DY800 type pressure sensor manufactured by a clam-port ocean sensing system engineering Co., ltd, and is used for reading data of pressure generated by integral expansion of a module; a square space for placing a battery module 8 for measuring the expansion force of the module is arranged between the second separator 6 and the right extrusion fixing plate 2; the battery module 8 comprises a module main body, wherein a module front end plate 80, a module rear end plate 81, a module left side plate 82, a module right side plate 83, a bottom support plate 84 and an insulating protection layer 85 for insulation are arranged on the periphery of the module main body, the module left side plate 82 and the module right side plate 83 are respectively positioned on the front side and the rear side of the module main body, the module front end plate 80 and the module rear end plate 81 are respectively positioned at the left end and the right end of the module main body, the module rear end plate 81 is contacted with a left side extrusion fixing plate 1, the module front end plate 80 is contacted with a right side extrusion fixing plate 2, the bottom support plate 84 is positioned at the bottom of the module main body, the insulating protection layer 85 is positioned at the top of the module main body, press-riveting nuts are respectively arranged at the bottoms of the module front end plate 80 and the module rear end plate 81, counter-holes are respectively arranged at the positions of the bottom support plate 84, the press-nuts are connected with counter holes at the corresponding positions, the module main body is composed of two rows of longitudinally arranged cells, and one end of each cell is vertically arranged with the module left side plate 82 or the module right side plate 83, and one end of each cell is contacted with the left side plate 82 or the module 83;
the fixing and clamping device 7 comprises an L-shaped first clamping plate 70, an L-shaped second clamping plate 71, a first fixing brace 72 and a second fixing brace 73, wherein the L-shaped first clamping plate 70 is fixedly arranged below the first fixing brace 72, the L-shaped second clamping plate 71 is fixedly arranged below the second fixing brace 73, the first fixing brace 72 and the second fixing brace 73 are partially overlapped and fixedly connected, the L-shaped first clamping plate 70 is arranged above the left side extrusion fixing plate 1, the L-shaped second clamping plate 71 is arranged above the right side extrusion fixing plate 2, and the fixing and clamping device 7 is arranged right above the battery module 8 and used for clamping and fixing the left side extrusion fixing plate 1 and the right side extrusion fixing plate 2.
In the installation process of the battery module expansion force measurement tool, one side of the L-shaped first clamping plate 70 is provided with two first screw holes, the first fixing brace 72 is respectively provided with a second screw hole at a position corresponding to the first screw holes, two third screw holes are arranged at equal distances in the same side direction of the two second screw holes, and the adjusting bolt is in threaded connection with the first screw holes and the second screw holes corresponding to the positions in sequence, so that the L-shaped first clamping plate 70 is fixedly connected with the first fixing brace 72; two fourth screw holes are formed in one side of the L-shaped second clamping plate 71, and fifth screw holes are formed in positions corresponding to the fourth screw holes in the second fixing brace 73; two sixth screw holes are formed in the same side direction of the two fifth screw holes at equal distance, and the adjusting bolt is sequentially connected with the fourth screw hole and the fifth screw hole which correspond to the positions in a threaded manner, so that the L-shaped second clamping plate 71 is fixedly connected with the second fixing brace 73; the first fixing brace 72 is further provided with two long waist-shaped first through holes, and the second fixing brace 73 is provided with two long waist-shaped second through holes, and the first through holes and the second through holes are connected through adjusting bolts and nuts, so that the first fixing brace 72 and the second fixing brace 73 are fixedly connected, and position adjustment can be performed. There are two long waist type third through-holes on the extrusion face of left side extrusion fixed plate 1, there are two long waist type fourth through-holes on the extrusion face of right side extrusion fixed plate 2, long screw 3 is worn out and is fixed with the extrusion face through nut by corresponding third through-hole and fourth through-hole, in the use, extrudees right side extrusion fixed plate 2 with left side extrusion fixed plate 1 to suitable scope after, under the state of tight module, can make long screw 3 pass and fasten with the nut through the long waist type through-hole on it.
The expansion force measurement tool for the battery module is used in the process of:
1. the battery cell is limited in the X, Y, Z directions (namely the transverse direction, the longitudinal direction and the vertical direction) by extruding the fixing plate, the fixing and clamping device, the insulating protection layer of the battery module and the long screw rod at the left side and the right side, and meanwhile, each part can be sequentially regulated according to the requirements of different numbers of the battery cells, so that the whole assembly is ensured;
2. the left side and the right side are respectively provided with a plurality of fixing hole sites, so that the stability and the horizontality of the whole fixed battery are ensured;
3. for guaranteeing intensity, wherein control side extrusion fixed plate, fixed clamping device, baffle, battery module's end curb plate all are made with high strength steel (stainless steel), for guaranteeing insulating protection, there is an insulating protection layer in the top of module, in addition to this, if need to beat the gluey processing in electric core bottom, can paste one deck insulating tape (can use the insulating tape of PET or P I etc. materials) protection in the position between bottom support plate and the electric core, send can reach insulating effect, can guarantee the repeatedly used of frock again.
In particular, after the battery module 8 is clamped between the second separator 6 and the right extrusion fixing plate 2, the right extrusion fixing plate 2 is clamped between two fixing seats 85 of the battery module 8, the left extrusion fixing plate 1 is kept still, the size of the length direction of the battery module is adjusted through a nut on the long screw 3 on one side of the right extrusion fixing plate 2, the initial pressure of the module is adjusted, proper extrusion force is provided for the battery cell, and the pressure sensor 5 reads the initial extrusion force value. After the adjustment is completed, the fixing and clamping device 7 is installed again.
After the bus bars are welded at the top of the battery cells of the battery module 8 (for example, the conventional serial or parallel connection mode can be adopted), the battery module 8 can be subjected to a preset number of charge and discharge cycle tests (for example, 1000 times) through the conventional charge and discharge test equipment, then the pressure value detected on the extrusion force sensor is read, and the pressure value is subtracted from the initial extrusion force, so that the module expansion force generated after the preset number of charge and discharge cycle tests of the battery module 8 can be obtained.
Above-mentioned battery module inflation power measurement frock is arranged in current high low temperature test box, and this current high low temperature test box can adjust the temperature in the box. The battery module expansion force measurement tool has scientific structure, low cost and convenient operation, and the whole length is only slightly longer than the size of the battery module, thereby being beneficial to saving the testing field. For example, through the inspection, can place in 1 cubic meter's incubator (current high low temperature test box promptly, can adjust the temperature in the box) to the expansion force change condition of battery module when charging and discharging under different ambient temperature can be monitored in real time.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.

Claims (7)

1. A battery module expansion force measurement tool is characterized in that: comprises a left extrusion fixing plate (1), a right extrusion fixing plate (2) and a fixing clamping device (7), wherein the left extrusion fixing plate (1) and the right extrusion fixing plate (2) are symmetrically arranged, the fixing clamping device (7) is arranged above the left extrusion fixing plate, the bottoms of the left extrusion fixing plate (1) and the right extrusion fixing plate (2) are fixedly connected through two long screws (3),
the right side (inner side) of the left side extrusion fixing plate (1) is sequentially provided with a first partition plate (4), a pressure sensor (5) and a second partition plate (6); a square space for placing a battery module (8) for measuring the expansion force of the module is arranged between the second partition plate (6) and the right extrusion fixing plate (2);
the fixing and clamping device (7) comprises an L-shaped first clamping plate (70), an L-shaped second clamping plate (71), a first fixing brace (72) and a second fixing brace (73), wherein the L-shaped first clamping plate (70) is fixedly arranged below the first fixing brace (72), the L-shaped second clamping plate (71) is fixedly arranged below the second fixing brace (73), the first fixing brace (72) and the second fixing brace (73) are partially stacked and fixedly connected, the L-shaped first clamping plate (70) is arranged above the left side extrusion fixing plate (1), and the L-shaped second clamping plate (71) is arranged above the right side extrusion fixing plate (2).
2. The battery module expansion force measurement tool according to claim 1, wherein: the battery module (8) comprises a module main body, module front end plate (80), module rear end plate (81), module left side board (82), module right side board (83), bottom support plate (84) and insulating protection layer (85) used for insulation are arranged on the periphery of the module main body, wherein the module left side board (82) and the module right side board (83) are respectively located on the front side and the rear side of the module main body, the module front end plate (80) and the module rear end plate (81) are respectively located at the left end and the right end of the module main body, the module rear end plate (81) is in contact with a left side extrusion fixing plate (1), the module front end plate (80) is in contact with a right side extrusion fixing plate (2), the bottom support plate (84) is located at the bottom of the module main body, and the insulating protection layer (85) is located at the top of the module main body.
3. The battery module expansion force measurement tool according to claim 2, wherein: the module main body consists of a plurality of rows of longitudinally arranged battery cells, and the battery cells are vertically arranged with a left side plate (82) or a right side plate (83) of the module.
4. The battery module expansion force measurement tool according to claim 3, wherein: the module main body consists of two rows of longitudinally arranged battery cores in parallel.
5. The battery module expansion force measurement tool according to claim 1, wherein: two first screw holes are formed in one side of the L-shaped first clamping plate (70), second screw holes are formed in positions corresponding to the first screw holes respectively in the first fixing brace (72), two third screw holes are formed in the equal distance positions of the two second screw holes in the same side direction, and the adjusting bolt is in threaded connection with the first screw holes and the second screw holes corresponding to the positions in sequence, so that the L-shaped first clamping plate (70) is fixedly connected with the first fixing brace (72);
two fourth screw holes are formed in one side of the L-shaped second clamping plate (71), and fifth screw holes are formed in positions, corresponding to the fourth screw holes, of the second fixing brace (73) respectively; two sixth screw holes are formed in the same side direction of the two fifth screw holes at equal distance, and the adjusting bolt is sequentially connected with the fourth screw hole and the fifth screw hole which correspond to the positions in a threaded manner, so that the L-shaped second clamping plate (71) is fixedly connected with the second fixing brace (73);
the first fixing brace (72) is further provided with two long waist-shaped first through holes, the second fixing brace (73) is provided with two long waist-shaped second through holes, the first through holes are connected with the second through holes through adjusting bolts and nuts, and therefore the first fixing brace (72) is fixedly connected with the second fixing brace (73), and position adjustment can be conducted.
6. The battery module expansion force measurement tool according to claim 1, wherein: the left side extrusion fixed plate (1) has two long waist type third through holes on the extrusion face, the right side extrusion fixed plate (2) has two long waist type fourth through holes on the extrusion face, long screw (3) are worn out and are fixed with the extrusion face through nut by corresponding third through holes and fourth through holes.
7. The battery module expansion force measurement tool according to claim 2, wherein: the bottoms of the front end plate (80) and the rear end plate (81) of the module are respectively provided with a press rivet nut, counter bores are formed in corresponding positions of the bottom supporting plate (84), and the press rivet nuts are connected with the counter bores in the corresponding positions.
CN202211679872.6A 2022-12-27 2022-12-27 Battery module expansion force measurement tool Pending CN116147815A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211679872.6A CN116147815A (en) 2022-12-27 2022-12-27 Battery module expansion force measurement tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211679872.6A CN116147815A (en) 2022-12-27 2022-12-27 Battery module expansion force measurement tool

Publications (1)

Publication Number Publication Date
CN116147815A true CN116147815A (en) 2023-05-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211679872.6A Pending CN116147815A (en) 2022-12-27 2022-12-27 Battery module expansion force measurement tool

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230033261A1 (en) * 2020-04-07 2023-02-02 Lisa Draexlmaier Gmbh Force measurement module for capturing a force, and method for determining a force

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230033261A1 (en) * 2020-04-07 2023-02-02 Lisa Draexlmaier Gmbh Force measurement module for capturing a force, and method for determining a force

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