CN219758124U - Thermal shock test device for lithium ion battery - Google Patents

Abstract

The utility model relates to the technical field of battery testing, in particular to a thermal shock test device for a lithium ion battery, which comprises: the first locating plate and the second locating plate are arranged in the box body in a relative mode, and the first driving mechanism penetrates through the first locating plate and the second locating plate and drives the first locating plate and the second locating plate to move oppositely or oppositely. The battery to be tested is placed between the first locating plate and the second locating plate, and the battery to be tested is clamped by the opposite movement of the first locating plate and the second locating plate. According to the utility model, batteries with different sizes can be clamped by moving the first positioning plate and the second positioning plate in opposite directions, so that the adaptability of the test device is improved.

Description

Thermal shock test device for lithium ion battery

Technical Field

The utility model relates to the technical field of battery testing, in particular to a thermal shock test device for a lithium ion battery.

Background

A lithium ion battery is a secondary battery that operates mainly by means of lithium ions moving between a positive electrode and a negative electrode. In the field of batteries, in order to ensure the quality of the battery, the performance of the battery needs to be tested by a battery thermal shock test device before the battery leaves the factory.

For example, in a battery thermal shock test device (application number: CN 201921433336.1), a battery is placed on a second heating block, and then the first heating block and the second heating block are moved in opposite directions until a test surface of the battery to be tested is attached to the surfaces of the two heating blocks, so as to complete the test. However, in this test method, batteries of different specifications cannot be tested; for example, a battery larger than the second heating block cannot be well limited to the second heating block.

Therefore, the prior art has a disadvantage and needs to be further improved.

Disclosure of Invention

In order to solve the problems, the utility model aims to provide a thermal shock test device for a lithium ion battery, so as to solve the technical problem that the positioning of batteries with different specifications cannot be adapted in the prior art.

The utility model aims at realizing the following technical scheme:

the utility model provides a thermal shock test device for a lithium ion battery, which comprises the following components:

a case;

the first driving structure is arranged on the box body;

the positioning plate is arranged in the box body, and comprises a first positioning plate and a second positioning plate which are oppositely arranged, and the first driving structure penetrates through the first positioning plate and the second positioning plate and drives the first positioning plate and the second positioning plate to move oppositely or reversely;

the heating mechanism is arranged in the box body and used for heating the box body;

the heating mechanism includes:

the heating plate is detachably arranged in the box body, a heating bin is formed between the heating plate and the inner wall of the box body, a plurality of air inlet holes are formed in the heating plate, and the heating bin is communicated with the inside of the box body through the air inlet holes;

the heating pipe is detachably arranged in the heating bin and is used for generating heat by heating;

the air blower is arranged in the heating bin and is used for blowing heat generated by the heating pipe to enter the box body through the air inlet, and an air outlet for exhausting is formed in the box body.

Preferably, the first driving structure includes:

the first positioning plate is positioned in a first rotation direction of the first bidirectional threaded rod, and the second positioning plate is positioned in a second rotation direction of the first bidirectional threaded rod;

the first electric part is detachably arranged on the box body and is connected with the first bidirectional threaded rod and used for driving the first bidirectional threaded rod to rotate.

Preferably, the positioning plate further comprises:

the second bidirectional threaded rod is arranged on the first positioning plate;

the first clamping plate group comprises a first clamping plate and a second clamping plate which are oppositely arranged, and the second bidirectional threaded rod penetrates through one end of the first clamping plate and one end of the second clamping plate; the first clamping plate is positioned in a first rotation direction of the second bidirectional threaded rod, and the second clamping plate is positioned in a second rotation direction of the second bidirectional threaded rod.

Preferably, the positioning plate further comprises:

the third bidirectional threaded rod is arranged on the second positioning plate;

the second clamping plate group comprises a third clamping plate and a fourth clamping plate which are oppositely arranged, and a third bidirectional threaded rod penetrates through one end of the third clamping plate and one end of the fourth clamping plate; the third clamping plate is positioned in the first rotation direction of the third bidirectional threaded rod, and the fourth clamping plate is positioned in the second rotation direction of the second bidirectional threaded rod.

Preferably, the positioning plate further comprises:

the first supporting rod is arranged on the first positioning plate and is positioned at one side far away from the second bidirectional threaded rod, and is arranged in parallel with the second bidirectional threaded rod; the first supporting rod passes through the first clamping plate and the second clamping plate;

the second electric part is connected with the second bidirectional threaded rod and is used for driving the second bidirectional threaded rod to rotate and driving the first clamping plate and the second clamping plate to move oppositely or reversely;

the second supporting rod is arranged on the second positioning plate and is positioned far away from the third bidirectional threaded rod, and is arranged in parallel with the third bidirectional threaded rod; the second supporting rod passes through the third clamping plate and the fourth clamping plate;

and the third electric part is connected with the third bidirectional threaded rod and is used for driving the third bidirectional threaded rod to rotate and driving the third clamping plate and the fourth clamping plate to move oppositely or reversely.

Preferably, the positioning plate further comprises:

the first supporting plate is fixedly arranged on the first positioning plate and comprises a first sub-plate and a second sub-plate which are oppositely arranged, the first supporting rod is arranged between the first sub-plate and the second sub-plate, the second bidirectional threaded rod penetrates through the first sub-plate, and the first clamping plate group is arranged between the first sub-plate and the second sub-plate;

the second supporting plate is fixedly arranged on the second positioning plate and comprises a third sub-plate and a fourth sub-plate which are oppositely arranged, the second supporting rod is arranged between the third sub-plate and the fourth sub-plate, the third bidirectional threaded rod penetrates through the third sub-plate, and the second clamping plate group is arranged between the third sub-plate and the fourth sub-plate.

Preferably, be provided with the air-out mechanism that is used for the gaseous discharge box in the box on the air outlet of box, air-out mechanism includes:

the air outlet pipe is arranged on the air outlet of the box body;

the exhaust fan is arranged on the box body and connected with the air outlet pipe;

the filter is arranged on the box body and connected with the exhaust fan and is used for filtering the gas exhausted by the exhaust fan.

Preferably, the lithium ion battery thermal shock test device further comprises:

the water spraying mechanism is arranged on the box body and is used for spraying water to the interior of the box body;

and the drain pipe is arranged at the bottom of the box body and is used for discharging water in the box body out of the box body.

Preferably, the lithium ion battery thermal shock test device further comprises:

the flame sensor is arranged in the box body and used for monitoring whether a battery of the box body is burned or not;

the controller is arranged in the box body and is connected with the flame sensor; the controller is used for controlling the starting and closing of the water spraying mechanism; and/or the number of the groups of groups,

and the temperature sensor is arranged in the box body and used for monitoring the temperature in the box body.

Preferably, the lithium ion battery thermal shock test device further comprises:

the heat preservation layer is arranged between interlayers of the box body and used for preserving heat of the box body.

Preferably, the positioning plate further comprises:

the limiting rod is transversely arranged in the box body, penetrates through the first positioning plate and the second positioning plate, and moves along the limiting rod.

The beneficial effects of the utility model are as follows: the first locating plate and the second locating plate are arranged in the box body in a relative mode, and the first driving mechanism penetrates through the first locating plate and the second locating plate and drives the first locating plate and the second locating plate to move oppositely or oppositely. The battery to be tested is placed between the first locating plate and the second locating plate, and the battery to be tested is clamped by the opposite movement of the first locating plate and the second locating plate. According to the utility model, batteries with different sizes can be clamped by moving the first positioning plate and the second positioning plate in opposite directions, so that the adaptability of the test device is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

FIG. 1 is a schematic diagram of a thermal shock test apparatus for a lithium ion battery according to the present utility model;

FIG. 2 is a schematic side view of a thermal shock test apparatus for a lithium ion battery according to the present utility model;

FIG. 3 is a schematic view of the structure of the positioning plate of the present utility model;

FIG. 4 is a schematic view of the structure of the case of the present utility model;

fig. 5 is a schematic diagram of the operation of the flame sensor of the present utility model.

Wherein the reference numerals are as follows:

1-a box body;

2-a first driving structure, 201-a first bidirectional threaded rod, 202-a first electric part;

3-a first positioning plate, 301-a second bidirectional threaded rod, 302-a first supporting rod, 303-a first clamping plate, 304-a second clamping plate, 305-a first sub-plate and 306-a second sub-plate;

4-heating mechanism, 401-heating bin, 402-heating plate, 403-heating pipe, 404-blower, 5-air outlet mechanism, 501-air outlet pipe, 502-exhaust fan and 503-filter;

6-a water spraying mechanism, 601-a water conveying pipe, 602-a water outlet pipe and 603-a spray head;

7-limit rod, 8-heat preservation, 9-flame sensor, 10-controller, 11-temperature sensor.

Detailed Description

In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

In the prior art, batteries with different specifications cannot be well positioned, for example, a battery thermal shock test device (application number: CN 201921433336.1) is disclosed, which positions a battery to be tested on a second heating block by moving the first heating block and the second heating block in opposite directions. However, when the battery to be measured is larger than the second heating block, the battery to be measured exceeds the heating block, and the heating block cannot well position the battery to be measured at the moment.

Based on the above problems, referring to fig. 1, 2 and 5, the present utility model provides a thermal shock test device for a lithium ion battery, comprising a case 1, a first driving structure 2, a positioning plate and a heating mechanism 4, wherein:

the box body 1 is arranged as a cavity, and a plurality of parts used for forming the testing device structure are arranged in the box body.

The first driving structure 2 is arranged on the box body 1.

The locating plate is arranged in the box body 1 and comprises a first locating plate 3 and a second locating plate which are oppositely arranged, and the first driving structure 2 penetrates through the first locating plate 3 and the second locating plate and drives the first locating plate 3 and the second locating plate to move oppositely or move oppositely.

The heating mechanism 4 is provided in the case 1 and heats the case 1.

The utility model is provided with a first positioning plate 3 and a second positioning plate which are opposite to each other in a box body 1, and a first driving mechanism passes through the first positioning plate 3 and the second positioning plate and drives the first positioning plate 3 and the second positioning plate to move in opposite directions or move in opposite directions. The battery to be measured is placed between the first locating plate 3 and the second locating plate, and the battery to be measured is clamped by the opposite movement of the first locating plate 3 and the second locating plate. According to the utility model, batteries with different sizes and specifications can be clamped by the opposite or opposite movement of the first positioning plate 3 and the second positioning plate, so that the adaptability of the test device is improved.

For example, the battery to be tested is placed between the first positioning plate 3 and the second positioning plate, then the first driving mechanism is started, so that the first positioning plate 3 and the second positioning plate move towards each other until the positioning plate clamps the battery to be tested, and then the heating mechanism 4 is started for heating the battery to be tested until the experiment is completed.

In some embodiments, referring to fig. 1 and 3, a stop lever 7 is disposed on the positioning plate, the stop lever 7 is transversely disposed between the first positioning plate 3 and the second positioning plate, and two sides of the lower ends of the first positioning plate 3 and the second positioning plate are respectively provided with a stop hole, two stop levers 7 correspondingly penetrate through the stop holes on two sides of the lower ends of the first positioning plate 3 and the second positioning plate, so that the first positioning plate 3 and the second positioning plate move along the stop lever 7, the stop lever 7 plays a role in limiting the first positioning plate 3 and the second positioning plate, and the positioning plates are regulated more stably through the stop lever 7.

In some embodiments, referring to fig. 1, the first driving structure 2 includes a first bi-directional threaded rod 201 and a first electric portion 202, wherein the first bi-directional threaded rod 201 passes through a first positioning plate 3 and a second positioning plate, the first positioning plate 3 is located at a first rotation direction of the first bi-directional threaded rod 201, and the second positioning plate is located at a second rotation direction of the first bi-directional threaded rod 201. The first electric part 202 is detachably arranged on the box body 1, is connected with the first bidirectional threaded rod 201, and is used for driving the first bidirectional threaded rod 201 to rotate.

Specifically, through holes are formed in the box body 1, and threaded holes matched with the first bidirectional threaded rods 201 are formed in the middle parts of the upper ends of the first positioning plate 3 and the second positioning plate; the first bi-directional threaded rod 201 is inserted into the case 1 from the through hole of the case 1 and passes through the first positioning plate 3 and the second positioning plate. The threads of the first bidirectional threaded rod 201 comprise two rotation directions, the first positioning plate 3 is located in the first rotation direction of the first bidirectional threaded rod 201, the second positioning plate is located in the second rotation direction of the first bidirectional threaded rod 201, and when the first bidirectional threaded rod 201 rotates, the first positioning plate 3 and the second positioning plate are located in different thread rotation directions, so that the rotation of the first bidirectional threaded rod 201 can drive the first positioning plate 3 and the second positioning plate to move in opposite directions or move in opposite directions.

Specifically, a mounting seat is provided at the through hole of the case 1, and the first electric part 202 is detachably mounted at the mounting seat. The first electric part 202 is connected with the first bidirectional threaded rod 201, and the first electric part 202 drives the first bidirectional threaded rod 201 to rotate. The first electrically powered part 202 may be a motor or an electric machine.

In some embodiments, referring to fig. 1 and 2, the heating mechanism 4 includes a heating plate 402, a heating tube 403, and a blower 404. Wherein, heating plate 402 detachable sets up in box 1, forms heating storehouse 401 between the inner wall of heating plate 402 and box 1, is provided with a plurality of fresh air inlet 405 on heating plate 402, and heating storehouse 401 is through fresh air inlet 405 and the inside intercommunication of box 1, in box 1 promptly, and one side of heating plate 402 is heating storehouse 401, and one side that keeps away from heating storehouse 401 is for being used for placing the one side of awaiting measuring the battery.

The heating pipe 403 is detachably disposed in the heating chamber 401, and after the heating pipe 403 is powered, heat can be generated to generate heat. The blower 404 is provided in the heating chamber 401, and the positional relationship is a heating plate 402, a heating pipe 403, and the blower 404 in this order. After the blower 404 is started, the wind power drives the heat generated by the heating pipe 403 to enter the box 1 from the heating bin 401 through the air inlet 405. The heat entering the box body 1 continuously can enable the temperature of the battery to be tested to be improved, and therefore the hot-stamping experiment of the battery is achieved.

The blower 404 continuously blows into the inside of the casing 1, and thus an air outlet for exhausting air is provided in the casing 1 for the purpose of air circulation so that air introduced into the casing 1 can be exhausted. The air outlet can be closed or opened.

Further, the number of heating pipes 403 may be set to be plural. A connection pipe 406 is further provided in the heating chamber 401, and one end of the connection pipe 406 is connected to the blower 404, and the other end is directed toward the heating pipe 403. The blower 404 blows through the connection pipe 406 against the heating pipe 403 to bring hot gas into the tank 1.

One end of the connecting pipe 406 is provided with a connecting flange, the blower 404 is detachably connected with the connecting pipe 406 through the connecting flange, and the blower 404 and the connecting pipe 406 can be detached.

Further, referring to fig. 2, the air inlet 405 is configured to have an expanded structure, the air inlet 405 includes an inlet and an outlet, the inlet of the air inlet 405 is located on one side of the heating pipe 403, and the inlet of the air inlet 405 is larger than the outlet thereof, so that the air is in a tightening trend when entering the interior of the case 1 from the air inlet 405. The inlet of the air inlet 405 is large so that more air flow can enter the air inlet 405; the small outlet of the air inlet 405 increases the velocity of the air flow exiting the air inlet 405, allowing for faster and more convenient heat dissipation.

In some embodiments, referring to fig. 1 to 3, the positioning plate further includes a second bidirectional threaded rod 301, a first support rod 302, a first clamping plate set, and a second electric portion, where the second bidirectional threaded rod 301, the first support rod 302, and the first clamping plate set are all disposed on the first positioning plate 3. The first clamping plate set comprises a first clamping plate 303 and a second clamping plate 304 which are oppositely arranged, through holes are formed in one sides of the first clamping plate 303 and the second clamping plate 304, threaded holes matched with the second bidirectional threaded rod 301 are formed in the other sides of the first clamping plate 303 and the second clamping plate 304, the first supporting rod 302 penetrates through the through holes of the first clamping plate 303 and the second clamping plate 304, and the second bidirectional threaded rod 301 penetrates through the threaded holes.

The second bi-directional threaded rod 301 is identical to the first bi-directional threaded rod 201 and comprises two threads in the first direction, the first clamping plate 303 is located in the first direction of rotation of the second bi-directional threaded rod 301 and the second clamping plate 304 is located in the second direction of rotation of the second bi-directional threaded rod 301. The second electric part is connected with the second bidirectional threaded rod 301, when the second electric part is started, the second bidirectional threaded rod 301 is driven to rotate, and the rotation of the second bidirectional threaded rod 301 drives the first clamping plate 303 and the second clamping plate 304 to move towards each other or move away from each other. The battery to be tested is clamped by the opposite movement of the first clamping plate 303 and the second clamping plate 304. By adjusting the first clamping plate set, batteries with different specifications can be adapted between the first clamping plate 303 and the second clamping plate 304. During the movement of the first clamping plate set, the clamp moves along the first supporting rod 302, and the first clamping plate set is guided by the first supporting rod 302, so that the first clamping plate set is regulated more stably.

The second locating plate is provided with the same structure as the first locating plate 3 and comprises a third bidirectional threaded rod, a second supporting rod, a second clamping plate group and a third electric part, wherein the second clamping plate group comprises a third clamping plate and a fourth clamping plate which are oppositely arranged. In the embodiment, the first positioning plate 3 and the second positioning plate are two sets of same positioning plates, are oppositely arranged in the box body 1, and when in use, the first positioning plate 3 can be assembled first, then the second positioning plate is assembled, the first positioning plate 3 and the second positioning plate are completely identical, and the motion principle is also completely identical, namely, the second supporting rod and the third bidirectional threaded rod correspondingly penetrate through the through hole of the second clamping plate group and the threaded hole of the second clamping plate group, the third electric part drives the third bidirectional threaded rod to rotate, and the rotation of the third bidirectional threaded rod drives the third clamping plate and the fourth clamping plate to move oppositely or oppositely, so that the second clamping plate group adapts to batteries with different specifications. The assembly structure and the movement principle of the second positioning plate are specifically referred to the first positioning plate 3, and will not be described herein.

In some embodiments, referring to fig. 3, the positioning board further includes a first supporting board and a second supporting board, where the first supporting board includes a first sub-board 305 and a second sub-board 306, and the first sub-board 305 and the second sub-board 306 are fixed on the first positioning board 3 in parallel with each other. Mounting holes are formed in one end of the first daughter board 305 and one end of the second daughter board 306, the mounting holes are aligned with the through holes in the first clamping plate set, and two ends of the first supporting rod 302 are correspondingly mounted in the mounting holes in the first daughter board 305 and the second daughter board 306.

The end of the first sub-board 305 remote from the first support bar 302 is provided with a through hole which is aligned with the threaded hole of the first clamping plate set, and the second bi-directional threaded rod 301 passes through the through hole of the first sub-board 305 to the second sub-board 306. The first clamping plate set is located between the first sub-plate 305 and the second sub-plate 306, where the first sub-plate 305 and the second sub-plate 306 play a role in limiting the first clamping plate set, for example, when the second bidirectional threaded rod 301 drives the two clamping plates of the first clamping plate set to move oppositely, the first sub-plate 305 can block the first clamping plate 303 from moving towards the upper end of the positioning plate (as reference in fig. 3), and the second sub-plate 306 can block the second clamping plate 304 from moving towards the lower end of the positioning plate.

In some embodiments, referring to fig. 1, 2, 4 and 5, when the blower 404 is started to enter the interior of the box 1 from the heating chamber 401, air entering the interior of the box 1 needs to be discharged from an air outlet of the box 1, in order to discharge air from the box 1, an air outlet mechanism 5 is arranged at the air outlet of the box 1, the air outlet mechanism 5 comprises an air outlet pipe 501, an exhaust fan 502 and a filter 503, the air outlet pipe 501 is inserted into the air outlet, the exhaust fan 502 is arranged on the box 1 and connected with the air outlet pipe 501, and air or gas in the box 1 can be pumped out of the box 1 from the air outlet pipe 501 through the exhaust fan 502. The top of play tuber pipe 501 is provided with flange, and air exhauster 502 passes through flange and goes out tuber pipe 501 and can dismantle the connection.

The battery that awaits measuring is heated and can produce harmful gas probably, sets up filter 503 and be connected with air exhauster 502 on box 1, and air exhauster 502 exhaust gas passes through filter 503 and discharges to the external world, filters the inside gas of box 1 through filter 503, avoids causing the pollution to the environment, makes test device's security higher.

In some embodiments, referring to fig. 1, the thermal shock test device for a lithium ion battery further includes a water spraying mechanism 6 and a drain pipe, wherein the water spraying mechanism 6 is arranged on the box 1 and is used for spraying water inside the box 1; a drain pipe (not shown) is provided at the bottom of the tank 1 for draining water. For example, when the battery to be tested is burned, water can be sprayed through the water spraying mechanism 6 to extinguish the fire. The discharged water is discharged from the drain pipe to the tank 1.

Specifically, the water spraying mechanism 6 comprises a water conveying pipe 601, a water outlet pipe 602 and a spray nozzle 603, wherein the water conveying pipe 601 is arranged above the top of the box body 1, a plurality of groups of water outlet pipes 602 penetrating into the box body 1 are arranged at the bottom of the water conveying pipe 601, the spray nozzle 603 is arranged at one end of each group of water outlet pipes 602 located in the box body 1, water is sprayed into the box body 1 through the spray nozzle 603, and self-burning batteries are timely extinguished.

In some embodiments, referring to fig. 1 and 5, the thermal shock test device for lithium ion battery further includes a flame sensor 9, a controller 10 and a temperature sensor 11, where the flame sensor 9 is disposed in the case 1, and is used for monitoring whether the battery of the case 1 burns; the controller 10 is arranged in the box body 1 and is connected with the flame sensor 9; the controller 10 controls whether the water spraying mechanism 6 sprays water or not according to the monitoring result of the flame sensor 9, the controller 10 controls the water spraying mechanism 6 to start, the water spraying mechanism 6 sprays water, the controller 10 controls the water spraying mechanism 6 to close, and the water spraying mechanism 6 stops spraying water. Whether the battery is spontaneous-ignited or not can be monitored through the flame sensor 9, monitoring signals are transmitted to the controller 10, and the water spraying mechanism 6 is controlled to spray water through the controller 10, so that the battery can be extinguished in time.

Specifically, a solenoid valve is installed in the water outlet pipe 602, and the controller 10 controls the on-off of the battery valve to spray water from the water spraying mechanism 6, and when the solenoid valve is opened, the water outlet pipe 602 sprays water.

For example, when the flame sensor 9 detects that the battery in the box 1 is burned, a monitoring signal is transmitted to the controller 10, the electromagnetic valve is controlled to be opened by the controller 10, the water is sprayed from the water outlet pipe 602, and the fire is extinguished in time for the battery

Further, a temperature sensor 11 is provided on the other side of the inside of the case 1, so that the temperature inside the case 1 can be monitored. And according to the recorded temperature data, the temperature related data of the battery to be tested can be obtained.

In some embodiments, referring to fig. 1, an interlayer space is provided in the case 1, the interlayer space is located at the diameters of the inner wall and the outer wall of the case 1, and a heat insulation layer 8 is provided in the interlayer space, and the heat insulation layer 8 plays a role in insulating the inside of the case 1, so that the heat insulation effect in the case 1 is higher. The heat insulation layer 8 is made of heat insulation material, and can be a foam rubber plate, an extruded sheet, a polyurethane plate, a foam material or foam polypropylene and the like.

Further, one end of the box body 1 is provided with a box door, the top of one end of the box door is provided with a control panel, the control panel is connected with the flame sensor 9, the temperature sensor 11 and the controller 10, and universal wheels are arranged at four corners of the bottom of the box body 1, so that the test device can be conveniently moved.

Further, a visual window is arranged on the box body and used for penetrating the inside of the box body.

The working principle of the lithium ion battery thermal shock test device is as follows:

the test device is moved to a using position through the universal wheel, and an external water pipe is connected with the water inlet pipe; the first electric part 202 is started after being powered on, the first electric part 202 drives the first bidirectional threaded rod 201 to rotate, and threaded holes in the first positioning plate 3 and the second positioning plate are correspondingly matched with the first rotation direction and the second rotation direction of the first bidirectional threaded rod 201, so that the rotation of the first bidirectional threaded rod 201 drives the first positioning plate 3 and the second positioning plate to move in opposite directions to clamp a battery to be tested, which is positioned between the first positioning plate 3 and the second positioning plate. Screw holes on the locating plate are matched with the first bidirectional threaded rod 201, so that two groups of locating plates are adjusted in opposite directions, batteries of different models can be fixed, the batteries are conveniently tested, and the test is convenient.

The second bidirectional threaded rod 301 is driven to rotate by the second electric part, the rotation of the second bidirectional threaded rod 301 drives the first clamping plate 303 and the second clamping plate 304 to move in opposite directions, and meanwhile, the third electric part drives the third bidirectional threaded rod to rotate, and the rotation of the third bidirectional threaded rod drives the third clamping plate and the fourth clamping plate to move in opposite directions. The first clamping plate 303 and the second clamping plate 304 move in opposite directions, and the third clamping plate and the fourth clamping plate move in opposite directions, so that the up-down direction of the battery to be tested is limited, and the up-down and left-right (taking fig. 1 as a reference) direction of the battery to be tested is limited, and the battery to be tested is fastened in the positioning plate.

The box body 1 is provided with the air blower 404, external air is conveyed into the heating bin 401 through the air blower 404, the electric heating tube is electrified to generate heat, the air in the heating bin 401 is heated, and hot air is conveyed into the box body 1 through the air inlet hole, so that the temperature inside the box body 1 is raised. Whether the battery spontaneously ignites or not is monitored through the flame sensor 9, monitoring signals are transmitted to the controller 10, and the on-off of the electromagnetic valve on the water outlet pipe 602 is controlled through the controller 10, so that the fire can be extinguished in time. The temperature inside the case 1 can be monitored in real time by the temperature sensor 11. The exhaust fan 502 and the air outlet pipe 501 are used for exhausting the air in the box body 1 out of the box body 1, and the filter 503 is used for filtering the air exhausted from the box body 1, so that the environment is prevented from being polluted, and the safety of the test device is higher.

The beneficial effects of the utility model include:

1. the first locating plate 3 and the second locating plate are driven to move through the first bidirectional threaded rod 201, the first clamping plate group and the second clamping plate 304 group are correspondingly driven to move through the second bidirectional threaded rod 301 and the third bidirectional threaded rod, the batteries with different specifications can be clamped by the locating plate, and the batteries can be clamped in the four directions from top to bottom and from left to right, so that the stability of the batteries is better.

2. By providing the flame sensor 9, it is possible to monitor in real time whether the inside of the case 1 is burned or not, so as to rapidly extinguish a fire.

3. The filter 503 is arranged on the box body 1 to filter the gas discharged from the box body 1, so that the pollution to the environment is avoided, and the safety of the test device is higher.

The foregoing is merely a preferred embodiment of the present utility model 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 utility model, which are intended to be comprehended within the scope of the present utility model.

Claims (10)

1. The utility model provides a lithium ion battery thermal shock test device which characterized in that includes:

a case;

the first driving structure is arranged on the box body;

the positioning plate is arranged in the box body and comprises a first positioning plate and a second positioning plate which are oppositely arranged, and the first driving structure penetrates through the first positioning plate and the second positioning plate and drives the first positioning plate and the second positioning plate to move oppositely or move oppositely;

the heating mechanism is arranged in the box body and used for heating the box body;

the heating mechanism includes:

the heating plate is detachably arranged in the box body, a heating bin is formed between the heating plate and the inner wall of the box body, a plurality of air inlet holes are formed in the heating plate, and the heating bin is communicated with the inside of the box body through the air inlet holes;

the heating pipe is detachably arranged in the heating bin and is used for generating heat by heating;

the air blower is arranged in the heating bin and is used for blowing heat generated by the heating pipe to enter the box body through the air inlet hole, and an air outlet for exhausting is formed in the box body.

2. The lithium ion battery thermal shock test apparatus of claim 1, wherein the first driving structure comprises:

the first bidirectional threaded rod passes through the first positioning plate and the second positioning plate, the first positioning plate is positioned in a first rotation direction of the first bidirectional threaded rod, and the second positioning plate is positioned in a second rotation direction of the first bidirectional threaded rod;

the first electric part is detachably arranged on the box body and connected with the first bidirectional threaded rod and used for driving the first bidirectional threaded rod to rotate.

3. The lithium ion battery thermal shock test apparatus of claim 1, wherein the positioning plate further comprises:

the second bidirectional threaded rod is arranged on the first positioning plate;

the first clamping plate group comprises a first clamping plate and a second clamping plate which are oppositely arranged, and the second bidirectional threaded rod passes through one end of the first clamping plate and one end of the second clamping plate; the first clamping plate is positioned in a first rotation direction of the second bidirectional threaded rod, and the second clamping plate is positioned in a second rotation direction of the second bidirectional threaded rod.

4. The lithium ion battery thermal shock test apparatus of claim 3, wherein the positioning plate further comprises:

the third bidirectional threaded rod is arranged on the second positioning plate;

the second clamping plate group comprises a third clamping plate and a fourth clamping plate which are oppositely arranged, and the third bidirectional threaded rod penetrates through one ends of the third clamping plate and the fourth clamping plate; the third clamping plate is positioned in the first rotation direction of the third bidirectional threaded rod, and the fourth clamping plate is positioned in the second rotation direction of the second bidirectional threaded rod.

5. The lithium ion battery thermal shock test apparatus of claim 4, wherein the positioning plate further comprises:

the first supporting rod is arranged on the first positioning plate and is positioned at one side far away from the second bidirectional threaded rod, and is arranged in parallel with the second bidirectional threaded rod; the first supporting rod passes through the first clamping plate and the second clamping plate;

the second electric part is connected with the second bidirectional threaded rod and is used for driving the second bidirectional threaded rod to rotate and driving the first clamping plate and the second clamping plate to move oppositely or reversely;

the second supporting rod is arranged on the second positioning plate and is positioned far away from the third bidirectional threaded rod, and is arranged in parallel with the third bidirectional threaded rod; the second supporting rod passes through the third clamping plate and the fourth clamping plate;

and the third electric part is connected with the third bidirectional threaded rod and is used for driving the third bidirectional threaded rod to rotate and driving the third clamping plate and the fourth clamping plate to move oppositely or reversely.

6. The lithium ion battery thermal shock test apparatus of claim 5, wherein the positioning plate further comprises:

the first support plate is fixedly arranged on the first positioning plate and comprises a first sub-plate and a second sub-plate which are oppositely arranged, the first support rod is arranged between the first sub-plate and the second sub-plate, the second bidirectional threaded rod passes through the first sub-plate, and the first clamping plate group is positioned between the first sub-plate and the second sub-plate;

the second supporting plate is fixedly arranged on the second positioning plate and comprises a third sub-plate and a fourth sub-plate which are oppositely arranged, the second supporting rod is arranged between the third sub-plate and the fourth sub-plate, the third bidirectional threaded rod penetrates through the third sub-plate, and the second clamping plate group is arranged between the third sub-plate and the fourth sub-plate.

7. The lithium ion battery thermal shock test device according to claim 1, wherein an air outlet of the box body is provided with an air outlet mechanism for exhausting air in the box body out of the box body, and the air outlet mechanism comprises:

the air outlet pipe is arranged on the air outlet of the box body;

the exhaust fan is arranged on the box body and connected with the air outlet pipe;

the filter is arranged on the box body, connected with the exhaust fan and used for filtering the gas exhausted by the exhaust fan.

8. The lithium ion battery thermal shock test device according to claim 1, wherein,

the lithium ion battery thermal shock test device further comprises:

the water spraying mechanism is arranged on the box body and is used for spraying water to the interior of the box body;

and the drain pipe is arranged at the bottom of the box body and is used for draining the water in the box body out of the box body.

9. The lithium ion battery thermal shock test apparatus of claim 8, further comprising:

the flame sensor is arranged in the box body and used for monitoring whether a battery of the box body burns up or not;

the controller is arranged in the box body and is connected with the flame sensor; the controller is used for controlling the starting and closing of the water spraying mechanism; and/or the number of the groups of groups,

and the temperature sensor is arranged in the box body and used for monitoring the temperature in the box body.

10. The lithium ion battery thermal shock test apparatus according to claim 1, further comprising:

the heat preservation layer is arranged between interlayers of the box body and used for preserving heat of the box body; and/or the number of the groups of groups,

the locating plate further comprises:

the limiting rod is transversely arranged in the box body, penetrates through the first positioning plate and the second positioning plate, and moves along the limiting rod.