WO2023071297A1 - 用于锂电池的加热测试装置及测试系统 - Google Patents

用于锂电池的加热测试装置及测试系统 Download PDF

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Publication number
WO2023071297A1
WO2023071297A1 PCT/CN2022/105257 CN2022105257W WO2023071297A1 WO 2023071297 A1 WO2023071297 A1 WO 2023071297A1 CN 2022105257 W CN2022105257 W CN 2022105257W WO 2023071297 A1 WO2023071297 A1 WO 2023071297A1
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heating
lithium battery
test device
heating test
box
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PCT/CN2022/105257
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English (en)
French (fr)
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宋会涛
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蜂巢能源科技股份有限公司
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Publication of WO2023071297A1 publication Critical patent/WO2023071297A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • the present disclosure relates to the technical field of power battery testing equipment, in particular to a heating testing device for a lithium battery. At the same time, the present disclosure also relates to a lithium battery heating test system provided with the lithium battery heating test device.
  • the thermal shock test is to place the lithium-ion battery cell in a temperature box, and the temperature box is raised from the test environment temperature (normal temperature 25°C) to 130°C ⁇ 2°C at a rate of 5°C/min, and the temperature is kept for 30 minutes before stopping heating After completing the test, observe it at the test environment temperature for 1h.
  • the test data of the whole process is stored in the controller of the equipment itself, and after the test is completed, the tester will copy the data for further data analysis.
  • the working principle of the heating temperature box is to control the solid-state relay through the central controller to heat the heating tube. After setting the program, the temperature of the box is dynamically adjusted, and the fan drives the internal heat of the box to circulate to ensure that the inside of the box is uniform. temperature and heating rate.
  • the temperature sensor collects the temperature data in the box and feeds it back to the controller, and the controller records the temperature data while performing control.
  • the battery cell is extremely prone to fire and explosion events. Due to the huge energy released after the thermal runaway explosion of a large-capacity battery, it will cause the test incubator to blow up in severe cases.
  • the test box itself has poor explosion-proof performance. When a large shock wave occurs, it is easy to cause the electrical components of the equipment inside the box, such as the central controller, operation panel, solid state relay, and temperature module to be blown up.
  • the internal materials when lithium batteries are subjected to high-temperature heating tests through the box, the internal materials will decompose due to temperature changes, and flammable gases may be generated.
  • the box is a closed space, and the whole box will be filled with the accumulation of combustible gas.
  • test cell When the test cell is thermally out of control and generates an open flame, it is easy to ignite the combustible gas. At this time, it will generate explosion power several times that of the battery itself. shock wave. This not only caused the overall damage of the equipment, but also caused the test data to be unable to be copied due to the damage of the internal controller, which caused huge losses for the company's research and development.
  • the present disclosure aims to propose a heating test device for lithium batteries, so as to improve the safety during the test.
  • a heating test device for a lithium battery comprising a heating box, and a control unit connected to the heating box through a cable, the control unit has a control unit; the heating box is formed with an accommodating chamber with one side open, and The heating box is provided with a door for opening and closing the opening, and a fire extinguishing part is provided in the accommodating chamber, and when the temperature rise rate in the accommodating chamber is greater than a preset threshold value, the fire extinguishing part is triggered to open .
  • the fire extinguishing part includes a fire extinguisher arranged at the top of the accommodation chamber.
  • a carrying plate for carrying the lithium battery is provided in the containing cavity; a gap is formed between the carrying plate and the bottom of the containing cavity, and a through hole is provided on the carrying plate.
  • each of the ventilation panels forms a gap with the side wall on the corresponding side of the accommodation cavity, and each of the ventilation panels is provided with a ventilation part; the bearing plate is connected between the two ventilation plates.
  • a temperature sensor for detecting the temperature in the accommodation chamber is provided in the accommodation chamber, and the temperature sensor is connected with the control unit.
  • an observation window is provided on the box door.
  • an imaging unit corresponding to the observation window is provided on the box door.
  • control part includes a control cabinet with a touch screen.
  • the heating box is provided with an emergency stop switch electrically connected to the touch screen, and the emergency stop switch is triggered to disconnect the touch screen from the power supply.
  • an operation button for activating the fire extinguishing unit is provided on the touch screen.
  • control unit includes an alarm unit connected with the control unit.
  • a combustible gas detection part connected with the control unit is provided on the top of the accommodating chamber.
  • the combustible gas detection unit includes a hydrogen concentration sensor and a carbon monoxide concentration sensor.
  • the heating box is provided with an air outlet, and the air outlet is connected to an exhaust fan through a pipeline, and a valve is arranged on the pipeline; the valve and the exhaust fan are connected to the control unit , the control unit can control the opening of the valve and the exhaust fan in response to the detection signal of the combustible gas detection unit.
  • the present disclosure has the following advantages:
  • the heating test in the heating box can be carried out. Fire extinguishing, thereby helping to improve the safety of the heating test device in use.
  • the fire extinguishing department adopts fire extinguishers, which have the advantages of mature products and good fire extinguishing effect.
  • the carrying plate has a simple structure and is convenient for carrying the battery, and the setting of through holes on the carrying plate is beneficial to improve the heating effect on the battery. By arranging the ventilation plate, it is beneficial to further improve the heating effect on the battery.
  • the setting of the observation window is good for viewing the inside of the heating box, and the camera part is good for obtaining the situation inside the heating box.
  • the product of the control cabinet is mature, which is convenient for layout and implementation, and the setting of the emergency stop switch is beneficial to control the connection status between the touch screen and the power supply according to the situation in the heating box.
  • the alarm unit By setting the alarm unit, a better warning effect can be achieved in the heating box.
  • the arrangement of the combustible gas detection part is beneficial to detect the combustible gas in the heating box.
  • the heating box can pass through the air outlet and the exhaust fan, which is beneficial to discharge the combustible gas in the heating box, and can reduce the risk of fire in the heating box.
  • Another object of the present disclosure is to propose a heating test system for a lithium battery, including a test room and a control room arranged at intervals, and the heating test device for a lithium battery as described above, wherein the heating box is located in the In the test room, the control unit is located in the control room.
  • the lithium battery heating test system described in the present disclosure by adopting the above-mentioned heating test device, is beneficial to improve the safety in the battery heating test, and by arranging the heating box and the control part in the test room and the control room respectively, it is beneficial to Further improve security in testing.
  • FIG. 1 is a schematic structural view of a heating test device for a lithium battery described in Embodiment 1 of the present disclosure
  • FIG. 2 is a schematic structural view of the heating box described in Embodiment 1 of the present disclosure.
  • FIG. 3 is a schematic diagram of the internal structure of the heater according to Embodiment 1 of the present disclosure.
  • FIG. 4 is a schematic structural diagram of a heating test system for a lithium battery described in Embodiment 2 of the present disclosure
  • orientations or positional relationships indicated by the terms “upper”, “lower”, “inner”, “back” and the like are based on the orientations or positional relationships shown in the accompanying drawings, and are only for It is convenient to describe the present disclosure and simplify the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the present disclosure.
  • the terms “first” and “second” are only used for descriptive purposes, and should not be understood as indicating or implying relative importance.
  • connection should be interpreted in a broad sense unless otherwise clearly defined.
  • it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary; connected.
  • connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary; connected.
  • the heating test device includes a heating box 1 and a control unit connected to the heating box 1 through a cable 401 .
  • the control unit has a control unit.
  • the heating box 1 is formed with an accommodating chamber with one side open, and a door 101 for opening and closing the opening is provided on the heating box 1 , and a fire extinguishing part is provided in the accommodating chamber. When the temperature rise rate in the containing chamber is greater than a preset threshold, the fire extinguishing part is triggered to open.
  • FIG. 1 An exemplary structure of the heating test device described in this embodiment is shown in FIG. 1 .
  • the accommodating cavity in the heating box 1 is used to place the battery and heat the battery.
  • the control part includes a control cabinet 4 with a touch screen, and the control unit can specifically be a PLC controller arranged in the control cabinet 4 .
  • One side of the heating box 1 is electrically connected to the electrical components in the control cabinet 4 via the above-mentioned cables 401 .
  • the heating box 1 can adopt a mature structure in the prior art, and a heating part capable of heating the accommodating cavity when energized is arranged therein.
  • the control cabinet 4 can adopt a mature structure in the prior art, and the setting of the touch screen on it not only facilitates viewing of test parameters, but also facilitates modification of test environment parameters. And for the convenience of moving heating box 1 and control cabinet 4, all are provided with a plurality of walking wheels 6 at the bottom of both.
  • the traveling wheel 6 here preferably adopts the universal wheel with braking function in the prior art.
  • One side of the box door 101 in this embodiment is pivotally connected to the heating box 1, and the other side of the box door 101 can adopt a locking structure in the prior art to lock the box door 101 on the heating box 1, as long as The opening of the heating box 1 can be closed by the box door 101 , and it is convenient to unlock and open the box door 101 .
  • the setting of the box door 101 can facilitate the battery to be taken and placed, and the structure of the box door 101 is simple, which is convenient for arrangement and implementation on the heating box 1 .
  • a carrying plate 103 for carrying the lithium battery is provided in the accommodating chamber. As shown in FIGS. 1 and 3 , the carrying plate 103 is arranged along the horizontal direction, and a gap is formed between the bottom of the receiving chamber and the carrying plate 103 is provided with a plurality of first through holes.
  • the carrying plate 103 has a simple structure and is convenient for carrying the battery, and the arrangement of through holes on the carrying plate 103 is beneficial to improve the heating effect on the battery.
  • each ventilation plate 102 there are two ventilation plates 102 arranged opposite to each other in the accommodating chamber, and each ventilation plate 102 is respectively extended along the vertical direction. between plates 102.
  • the two ventilation plates 102 and the bearing plate 103 are connected to form an "H" shape.
  • a gap is formed between each ventilation plate 102 and the side wall on the corresponding side of the accommodating cavity, and each ventilation plate 102 is provided with a ventilation part.
  • the ventilation part here is specifically a plurality of second through holes provided on each ventilation plate 102 , so that the surroundings of the battery are spaced apart from the inner wall of the accommodating cavity, which is beneficial to improve the heating effect.
  • a temperature sensor for detecting the temperature in the containing cavity is provided in the containing cavity.
  • the temperature sensor is connected with the control unit, and sends the detected temperature value to the control unit.
  • the normal temperature rise rate is pre-stored in the control unit, and the control unit can obtain the real-time temperature rise rate after receiving the temperature value.
  • the real-time temperature rise rate is greater than the preset temperature rise rate, it indicates that a fire has occurred in the containing cavity.
  • the above-mentioned fire extinguishing part includes a fire extinguisher 5 arranged on the top of the containing chamber, and the fire extinguisher 5 is used to extinguish the fire when a fire occurs in the containing chamber.
  • a fire extinguisher 5 arranged on the top of the containing chamber, and the fire extinguisher 5 is used to extinguish the fire when a fire occurs in the containing chamber.
  • the fire extinguisher 5 here can be a mature fire extinguisher 5 in the prior art, as long as it can extinguish the fire that occurs in the accommodating chamber.
  • the fire extinguisher 5 is a heptafluoropropane fire extinguisher 5 or a carbon dioxide fire extinguisher 5 .
  • the quantity of fire extinguishers 5 can also be increased or decreased adaptively.
  • control unit in this embodiment can send an activation signal to the fire extinguisher 5 when the temperature rise rate detected by the temperature sensor in real time is greater than the preset temperature rise rate.
  • the fire extinguisher 5 is activated under the control of the control unit, so as to extinguish the fire in the accommodating cavity.
  • the fire extinguisher 5 in this embodiment can also be activated manually.
  • an operation button for activating the fire extinguisher 5 is provided on the touch screen.
  • the heating box 1 is provided with an emergency stop switch 104 electrically connected to the touch screen.
  • the emergency stop switch 104 When the emergency stop switch 104 is triggered, the connection between the touch screen and the power supply can be disconnected.
  • the emergency stop switch 104 is specifically arranged at the top of one side of the heater box to facilitate its operation.
  • the emergency stop switch 104 can also adopt mature products in the prior art.
  • the control unit in this embodiment includes an alarm unit connected to the control unit.
  • the alarm unit can use the alarm 3 in the prior art, for example, a photoelectric alarm 3 or a buzzer alarm 3.
  • the alarm 3 is arranged on the top of the heating box 1, so as to be able to play a warning role when the temperature rise rate in the accommodating chamber is greater than a preset temperature rise rate, that is, when a fire occurs in the accommodating chamber.
  • the testing staff can operate the above-mentioned touch screen based on the warning information, thereby activating the fire extinguisher 5 .
  • a combustible gas detection part connected to the control unit is provided on the top of the accommodation chamber.
  • the combustible gas detection part may specifically adopt the combustible gas detector 7 in the prior art, and the combustible gas detector 7 is connected with the control unit for detecting the concentrations of hydrogen and carbon monoxide.
  • the combustible gas detector 7 is preferably arranged on the top of the accommodating cavity, of course, the combustible gas detector 7 can also be arranged at other positions according to the specific arrangement space.
  • the concentration threshold set by the combustible gas is stored in the control unit, and the combustible gas detector 7 detects the content of the combustible gas in the accommodating chamber, and sends the detection data to the control unit, and the control unit can compare the received detection data with the threshold .
  • the combustible gas detection unit in this embodiment can also use a hydrogen concentration sensor and a carbon monoxide concentration sensor.
  • an air outlet is provided on the heating box 1, and the air outlet is connected to an exhaust fan through a pipeline, and a valve is provided on the pipeline.
  • the valve and the exhaust fan in this embodiment are connected to the control unit, and the control unit can control the opening of the valve and the exhaust fan in response to the detection signal of the combustible gas detection unit.
  • the combustible gas detector 7 detects the concentration value of the combustible gas in the containing chamber in real time, and sends it to the control unit, and the control unit compares the received concentration value with the concentration threshold value, and when the detected concentration value is greater than the concentration threshold value, The control unit sends a control signal to the valve and the exhaust fan, the exhaust fan starts, the valve opens, and the combustible gas in the chamber is driven out of the heating box 1 by the exhaust fan.
  • control unit after the heating test of the battery is stopped, the control unit also sends an activation signal to the exhaust fan and the valve, so as to discharge the gas in the accommodating chamber out of the heating box 1 .
  • an observation window is provided on the box door 101 .
  • an installation opening 1011 for installing an observation window is provided on the box door 101 .
  • the observation window is specifically made of glass material.
  • the observation window has a simple structure, is convenient to be arranged and implemented on the box door 101, and has a good use effect.
  • an imaging unit 1021 corresponding to the observation window is provided on the box door 101, and the imaging unit 1021 is used to acquire image information inside the heating box 1 and transmit it to the control unit.
  • the imaging unit 1021 can adopt an industrial camera in the prior art. The lens of the industrial camera acquires image information through the observation window, records the testing process, and transmits the image information to the control unit for storage.
  • the heating box by setting a fire extinguishing part in the accommodation chamber of the heating box 1, and triggering the opening of the fire extinguishing part when the temperature rise rate of the accommodation chamber is greater than a preset threshold value, the heating box can be 1 to extinguish the fire, thereby improving the safety of the heating test device in use.
  • This embodiment relates to a lithium battery heating test system, including a test room and a control room arranged at intervals, and the heating test device for lithium batteries described in the first embodiment.
  • the heating box 1 is located in the test room
  • the control unit is located in the control room.
  • the test room and the control room are separated by a wall 2 , and cables 401 pass through the wall 2 and are respectively connected to the heating box 1 and the control unit.
  • This scheme of separating test and control can avoid damage to the control part when a fire or explosion occurs during the battery test. At the same time, it is also beneficial to improve the safety in the testing process.
  • test room and the control room in this embodiment specifically refer to two separate spaces, which can be arranged adjacent to each other, or can be arranged according to specific usage requirements.
  • the lithium battery heating test system described in this embodiment by adopting the heating test device as described above, is conducive to improving the safety in the battery heating test, and by arranging the heating box 1 and the control part in the test room and the control room respectively , which is conducive to further improving the safety of the test.

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Abstract

本公开提供了一种用于锂电池的加热测试装置及加热测试系统，其中，用于锂电池的加热测试装置包括加热箱(1)，以及与加热箱(1)通过线缆(401)连接的控制部，控制部具有控制单元；加热箱(1)形成有一侧开口的容纳腔，于加热箱(1)上设有以启闭开口的箱门(101)，容纳腔中设有灭火部，当容纳腔内的温升速率大于预设阈值时，灭火部被触发开启。本公开所述的用于锂电池的加热测试装置，通过在加热箱(1)的容纳腔内设置灭火部，并在容纳腔的温升速率大于预设阈值时触发开启灭火部，能够对加热箱(1)内进行灭火，从而利于提高加热测试装置在使用中的安全性。

Description

用于锂电池的加热测试装置及测试系统
本公开要求在2021年10月29日提交中国专利局、申请号202122641405.1、专利申请名称为“用于锂电池的加热测试装置及测试系统”的优先权，其全部内容通过引用结合在本公开中。
技术领域
本公开涉及动力电池测试设备技术领域，特别涉及一种锂电池的加热测试装置。同时，本公开还涉及一种具有该锂电池的加热测试装置的锂电池的加热测试系统。
背景技术
锂离子电池在研发过程中需要对单体进行多种安全性测试，其中一项测试为热冲击测试。热冲击测试是将锂离子电池单体放置于温度箱内，温度箱按照5℃/min的速率由试验环境温度(常温25℃)升至130℃±2℃，并保持此温度30min后停止加热，完成试验后，在试验环境温度下观察1h。整个过程的测试数据储存在设备自身的控制器中，测试完毕后由测试人员将数据拷贝出进行进一步的数据分析。
加热温度箱的工作原理是通过中央控制器控制固态继电器，对加热管进行加热，在设定程序后对箱体温度进行动态调整，并由风机带动箱体内部热量进行循环，保证箱体内部均匀度和升温速率。而温度传感器采集箱体内温度数据反馈至控制器，控制器在进行控制的同时并将温度数据进行记录。
在进行热冲击测试时，电池单体极易发生起火爆炸事件，由于测试较大容量电池发生热失控爆炸后所释放的能量巨大，严重时会导致测试温箱炸毁。而测试箱体自身所具备的防爆性差，在出现较大冲击波时，容易导致位于箱体内 部的设备的电气部件，如中央控制器，操作面板，固态继电器、温度模块均会被炸毁。另外，锂电池通过箱体进行高温加热测试时，会因为温度变化导致内部材料分解，可能会产生可燃性气体。而箱体为一密闭空间，随着可燃气体的积增会充满整个箱体，当测试电芯在发生热失控产生明火后容易引燃可燃气体，此时会产生数倍于电池自身爆炸威力的冲击波。这样不仅造成设备的整体损坏，而且由于内部控制器损坏导致测试数据无法拷贝，为公司研发造成巨大损失。
公开内容
有鉴于此，本公开旨在提出一种用于锂电池的加热测试装置，以提高测试过程中的安全性。
为达到上述目的，本公开的技术方案是这样实现的：
一种用于锂电池的加热测试装置，包括加热箱，以及与所述加热箱通过线缆连接的控制部，所述控制部具有控制单元；所述加热箱形成有一侧开口的容纳腔，于所述加热箱上设有以启闭所述开口的箱门，所述容纳腔中设有灭火部，当所述容纳腔内的温升速率大于预设阈值时，所述灭火部被触发开启。
进一步的，所述灭火部包括设于所述容纳腔顶部的灭火器。
进一步的，所述容纳腔内设有以承载所述锂电池的承载板；所述承载板与所述容纳腔的底部之间形成有间隙，并于所述承载板上设有通孔。
进一步的，所述容纳腔内设有两个相对布置的通风板，各所述通风板分别与所述容纳腔对应侧的侧壁之间形成有间隙，且各所述通风板均设有通风部；所述承载板连接于两个所述通风板之间。
进一步的，在所述容纳腔内设有用于检测容纳腔内温度的温度传感器，所述温度传感器与所述控制单元相连。
进一步的，所述箱门上设有观察窗。
进一步的，于所述箱门上设有对应于所述观察窗设置的摄像部。
进一步的，所述控制部包括具有触摸屏的控制柜。
进一步的，所述加热箱上设有与所述触摸屏电连接的急停开关，所述急停 开关被触发可断开所述触摸屏与电源间的连接。
进一步的，在所述触摸屏上设有启动所述灭火部的操作按键。
进一步的，所述控制部包括与所述控制单元连接的报警单元。
进一步的，所述容纳腔的顶部设有与所述控制单元连接的可燃气体检测部。
进一步的，所述可燃气体检测部包括用氢气浓度传感器和一氧化碳浓度传感器。
进一步的，所述加热箱上设有排风口，所述排风口通过管路连接有排风机，于所述管路上设有阀门；所述阀门和所述排风机与所述控制单元连接，所述控制单元响应于所述可燃气体检测部的检测信号，能够控制所述阀门和所述排风机开启。
相对于现有技术，本公开具有以下优势：
本公开所述的用于锂电池的加热测试装置，通过在加热箱的容纳腔内设置灭火部，并在容纳腔的温升速率大于预设阈值时触发开启灭火部，能够对加热箱内进行灭火，从而利于提高加热测试装置在使用中的安全性。
此外，灭火部采用灭火器，具有产品成熟，灭火效果好的优点。承载板的结构简单，便于承载电池，而承载板上通孔的设置，利于提高对电池的加热效果。通过设置通风板，利于进一步提高对电池的加热效果。观察窗的设置利于对加热箱内进行查看，而摄像部则利于获取加热箱内的情况。
另外，控制柜的产品成熟，便于布置实施，而急停开关的设置，利于根据加热箱内的情况控制触摸屏与电源之间的连接状态。通过设置报警单元，能够在加热箱内起到较好的警示效果。可燃气体检测部的设置，利于检测加热箱内的可燃气体。加热箱能够通过排风口和排风机，利于将加热箱内可燃气体排出，而能够降低加热箱内着火的风险。
本公开的另一目的在于提出一种锂电池的加热测试系统，包括间隔设置的测试室和控制室，以及如上所述的用于锂电池的加热测试装置，其中，所述加热箱位于所述测试室内，所述控制部位于所述控制室内。
本公开所述的锂电池的加热测试系统，通过采用如上所述的加热测试装置， 利于提高电池加热测试中的安全性，并通过将加热箱和控制部分别布置在测试室和控制室内，利于进一步提高测试中的安全性。
附图说明
构成本公开的一部分的附图用来提供对本公开的进一步理解，本公开的示意性实施例及其说明用于解释本公开，并不构成对本公开的不当限定。在附图中：
图1为本公开实施例一所述的用于锂电池的加热测试装置的结构示意图；
图2为本公开实施例一所述的加热箱的结构示意图；
图3为本公开实施例一所述的加热器的内部结构示意图；
图4为本公开实施例二所述的用于锂电池的加热测试系统的结构示意图；
附图标记说明：
1、加热箱；2、墙体；3、报警器；4、控制柜；5、灭火器；6、行走轮；7、可燃气体探测器；
101、箱门；1011、安装口；1021、摄像部；102、通风板；103、承载板；104、急停开关；
401、线缆。
具体实施方式
需要说明的是，在不冲突的情况下，本公开中的实施例及实施例中的特征可以相互组合。
在本公开的描述中，需要说明的是，术语“上”、“下”、“内”、“背”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本公开和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本公开的限制。另外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性。
此外，在本公开的描述中，除非另有明确的限定，术语“安装”、“相连”、 “连接”、“连接件”应做广义理解。例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以结合具体情况理解上述术语在本公开中的具体含义。
下面将参考附图并结合实施例来详细说明本公开。
实施例一
本实施例涉及一种用于锂电池的加热测试装置，整体结构上，该加热测试装置包括加热箱1，以及与加热箱1通过线缆401连接的控制部，控制部具有控制单元。加热箱1形成有一侧开口的容纳腔，于加热箱1上设有以启闭开口的箱门101，容纳腔中设有灭火部。当容纳腔内的温升速率大于预设阈值时，灭火部被触发开启。
基于如上整体介绍，本实施例中所述的加热测试装置的一种示例性结构如图1中所示。该加热箱1内的容纳腔用于放置电池，并对电池进行加热。控制部包括具有触摸屏的控制柜4，控制单元具体可为设于控制柜4内的PLC控制器。加热箱1的一侧经由上述的线缆401与控制柜4内的电器部件电连接。
其中，加热箱1可采用现有技术中成熟的结构，其内设有能够在通电时构成对容纳腔加热的加热部。控制柜4可采用现有技术中成熟的结构，其上触摸屏的设置，不仅便于对测试参数进行查看，而且还能够便于对测试环境参数进行修改。而为便于移动加热箱1和控制柜4，在两者的底部均设有多个行走轮6。此处的行走轮6优选采用现有技术中带有刹车功能的万向轮。
本实施例中的箱门101的一侧枢转连接在加热箱1上，箱门101的另一侧可采用现有技术中的锁止结构将箱门101锁止在加热箱1上，只要能够使箱门101封闭加热箱1上的开口，并便于将箱门101解锁打开即可。此处，箱门101的设置，能够便于对电池进行取放，且箱门101的结构简单，便于在加热箱1上布置实施。
为提高加热箱1对电池的加热效果，本实施例中，容纳腔内设有以承载锂电池的承载板103。如图1和图3中所示，承载板103沿着水平方向设置，并 与容纳腔的底部之间形成有间隙，并于承载板103上设有多个第一通孔。此处，承载板103的结构简单，便于承载电池，而承载板103上通孔的设置，利于提高对电池的加热效果。
另外，本实施例中，仍参照图3中所示，在容纳腔内设有两个相对布置的通风板102，各通风板102分别沿竖直方向延伸设置，承载板103连接于两个通风板102之间。两个通风板102和承载板103相连成“H”形。各通风板102分别与容纳腔对应侧的侧壁之间形成有间隙，各通风板102均设有通风部。此处的通风部具体为设于各通风板102上的多个第二通孔，如此设置，电池的四周均与容纳腔的内壁间隔设置，利于提高加热的效果。
为便于获取容纳腔内的温升速率，本实施例中，在容纳腔内设有用于检测容纳腔内温度的温度传感器。该温度传感器与控制单元相连，并将检测的温度数值发送至控制单元。而控制单元内预存有正常的温升速率，控制单元在接收到温度数值后能够得到实时的温升速率。当实时的温升速率大于预设的温升速率时，说明容纳腔内发生了起火。
上述的灭火部包括设于容纳腔顶部的灭火器5，灭火器5用于在容纳腔内发生火灾时进行灭火。如图3中所示，灭火器5为间隔布置在容纳腔顶部的两个，各灭火器5上均具有朝下设置的喷出口。此处的灭火器5可采用现有技术中成熟的灭火器5，只要能够对容纳腔内发生的火灾进行灭火即可。例如，灭火器5采用七氟丙烷灭火器5或二氧化碳灭火器5。当然，根据具体的使用需求，灭火器5的数量还可适应性的增减。
具体实施时，作为优选的，本实施例中的控制单元能够在温度传感器实时检测的温升速率大于预设温升速率时向灭火器5发出启动信号。灭火器5因控制单元的控制而启动，从而对容纳腔内进行灭火。
当然，本实施例中的灭火器5还可通过手动操纵的方式进行启动。例如，在触摸屏上设有启动灭火器5的操作按键。当控制单元检测到实时的温升速率大于预设温升速率时，操纵人员触发操作按键，灭火器5启动，从而对容纳腔内进行灭火。
本实施例中，加热箱1上设有与触摸屏电连接的急停开关104，急停开关104被触发可断开触摸屏与电源间的连接。如图1中所示，急停开关104具体设置在加热器箱的一侧顶部，以便于对其进行操作。具体实施时，急停开关104也可采用现有技术中的成熟产品。当测试人员在温箱侧进行作业时，通过按下急停按钮，控制柜4上的触摸屏电源自动被切断，从而防止其他人员在操作触摸屏及设备。
本实施例中的控制部包括与控制单元连接的报警单元，具体实施时，报警单元可采用现有技术中的报警器3，例如，采用光电报警器3或蜂鸣报警器3等。报警器3设于加热箱1的顶部，以能够在容纳腔内温升速率大于预设温升速率时，也即容纳腔内发生火灾时起到警示的作用。测试的工作人员可基于该警示信息而操纵上述的触摸屏，从而启动灭火器5。
此外，考虑到电池在加热的过程中，容易产生可燃气体，例如氢气和一氧化碳等。且随着容纳腔内温度的升高，可燃气体容易在容纳腔内发生火灾时发生爆炸。因此，本实施例中，容纳腔的顶部设有与控制单元连接的可燃气体检测部。
具体实施时，可燃气体检测部具体可采用现有技术中的可燃气体探测器7，该可燃气体探测器7与控制单元相连，用于检测氢气和一氧化碳的浓度。具体实施时，可燃气体探测器7优选布置在容纳腔的顶部，当然，根据具体的布置空间，还可将可燃气体探测器7布置在其他位置。
在控制单元内存储有可燃气体设定的浓度阈值，可燃气体探测器7检测容纳腔内可燃气体的含量，并将检测数据发送至控制单元，控制单元能够对接收到的检测数据与阈值相比较。当然，本实施例中的可燃气体检测部还可采用氢气浓度传感器和一氧化碳浓度传感器。
为便于将可燃气体排出，降低测试过程中发生风险，本实施例中，在加热箱1上设有排风口，排风口通过管路连接有排风机，于管路上设有阀门。本实施例中的阀门和排风机与控制单元连接，控制单元响应于可燃气体检测部的检测信号，能够控制阀门和排风机开启。
也就是说，可燃气体探测器7实时的检测容纳腔内可燃气体的浓度值，并发送至控制单元，控制单元对接收到的浓度值与浓度阈值相比较，当检测浓度值大于浓度阈值时，控制单元向阀门和排风机发出控制信号，排风机启动，阀门开启，容纳腔内的可燃气体被排风机驱使排出加热箱1。
本实施例中，在电池的加热测试停止后，控制单元也向排风机和阀门发送启动信号，从而将容纳腔内的气体排出加热箱1外。
此外，为便于观察加热箱1内的情况，本实施例中，在箱门101上设有观察窗。如图1中所示，在箱门101上设有用于安装观察窗的安装口1011。观察窗具体采用玻璃材料制成。此处，观察窗的结构简单，便于在箱门101上布置实施，且使用效果好。
另外，在箱门101上设有对应于观察窗设置的摄像部1021，摄像部1021用于获取加热箱1内的图像信息，并传输至控制单元。具体实施时，摄像部1021可采用现有技术中的工业相机，工业相机的镜头通过观察窗获取图像信息，并对测试的过程进行记录，同时，将图像信息传输至控制单元进行存储。
本实施例所述的用于锂电池的加热测试装置，通过在加热箱1的容纳腔内设置灭火部，并在容纳腔的温升速率大于预设阈值时触发开启灭火部，能够对加热箱1内进行灭火，从而利于提高加热测试装置在使用中的安全性。
实施例二
本实施例涉及一种锂电池的加热测试系统，包括间隔设置的测试室和控制室，以及实施例一中所述的用于锂电池的加热测试装置。其中，加热箱1位于测试室内，控制部位于控制室内。
如图4中所示，本实施例中测试室和控制室中间隔着墙体2，线缆401穿经墙体2后而分别与加热箱1和控制部相连。这种将测试和控制分隔开的方案，能够在电池测试中发生起火或者爆炸时，避免对控制部的损伤。同时也利于提高测试过程中的安全性。
当然，本实施例中的测试室和控制室具体是指两个单独的空间，两者之间可以相邻设置，也可以根据具体的使用需求进行布置。
本实施例所述的锂电池的加热测试系统，通过采用如上所述的加热测试装置，利于提高电池加热测试中的安全性，并通过将加热箱1和控制部分别布置在测试室和控制室内，利于进一步提高测试中的安全性。
以上所述仅为本公开的较佳实施例而已，并不用以限制本公开，凡在本公开的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本公开的保护范围之内。

Claims (15)

  1. 一种用于锂电池的加热测试装置，其特征在于：
    包括加热箱(1)，以及与所述加热箱(1)通过线缆(401)连接的控制部，所述控制部具有控制单元；
    所述加热箱(1)形成有一侧开口的容纳腔，于所述加热箱(1)上设有以启闭所述开口的箱门(101)，所述容纳腔中设有灭火部，当所述容纳腔内的温升速率大于预设阈值时，所述灭火部被触发开启。
  2. 根据权利要求1所述的用于锂电池的加热测试装置，其特征在于：
    所述灭火部包括设于所述容纳腔顶部的灭火器(5)。
  3. 根据权利要求1所述的用于锂电池的加热测试装置，其特征在于：
    所述容纳腔内设有以承载所述锂电池的承载板(103)；
    所述承载板(103)与所述容纳腔的底部之间形成有间隙，并于所述承载板(103)上设有通孔。
  4. 根据权利要求3所述的用于锂电池的加热测试装置，其特征在于：
    所述容纳腔内设有两个相对布置的通风板(102)，各所述通风板(102)分别与所述容纳腔对应侧的侧壁之间形成有间隙，且各所述通风板(102)均设有通风部；
    所述承载板(103)连接于两个所述通风板(102)之间。
  5. 根据权利要求1所述的用于锂电池的加热测试装置，其特征在于：
    在所述容纳腔内设有用于检测容纳腔内温度的温度传感器，所述温度传感器与所述控制单元相连。
  6. 根据权利要求1所述的用于锂电池的加热测试装置，其特征在于：
    所述箱门(101)上设有观察窗。
  7. 根据权利要求6所述的用于锂电池的加热测试装置，其特征在于：
    于所述箱门(101)上设有对应于所述观察窗设置的摄像部(1021)。
  8. 根据权利要求1所述的用于锂电池的加热测试装置，其特征在于：
    所述控制部包括具有触摸屏的控制柜(4)。
  9. 根据权利要求8所述的用于锂电池的加热测试装置，其特征在于：所述加热箱(1)上设有与所述触摸屏电连接的急停开关(104)，所述急停开关(104)被触发可断开所述触摸屏与电源间的连接。
  10. 根据权利要求8所述的用于锂电池的加热测试装置，其特征在于：
    在所述触摸屏上设有启动所述灭火部的操作按键。
  11. 根据权利要求1所述的用于锂电池的加热测试装置，其特征在于：
    所述控制部包括与所述控制单元连接的报警单元。
  12. 根据权利要求1至11中任一项所述的用于锂电池的加热测试装置，其特征在于：
    所述容纳腔的顶部设有与所述控制单元连接的可燃气体检测部。
  13. 根据权利要求12所述的用于锂电池的加热测试装置，其特征在于：所述可燃气体检测部包括用氢气浓度传感器和一氧化碳浓度传感器。
  14. 根据权利要求12所述的用于锂电池的加热测试装置，其特征在于：
    所述加热箱(1)上设有排风口，所述排风口通过管路连接有排风机，于所述管路上设有阀门；
    所述阀门和所述排风机与所述控制单元连接，所述控制单元响应于所述可燃气体检测部的检测信号，能够控制所述阀门和所述排风机开启。
  15. 一种锂电池的加热测试系统，其特征在于：包括间隔设置的测试室和控制室，以及权利要求1至14中任一项所述的用于锂电池的加热测试装置，其中，所述加热箱(1)位于所述测试室内，所述控制部位于所述控制室内。
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CN216310221U (zh) * 2021-10-29 2022-04-15 蜂巢能源科技有限公司 用于锂电池的加热测试装置及测试系统

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CN216310221U (zh) * 2021-10-29 2022-04-15 蜂巢能源科技有限公司 用于锂电池的加热测试装置及测试系统

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JP2014149158A (ja) * 2013-01-31 2014-08-21 Mitsubishi Electric Corp 被加熱試験体の加熱制御装置および加熱制御方法
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