Protective device for module test

Abstract

The utility model provides a protective device for module testing, which relates to the technical field of module testing, and comprises a protective bottom piece, the protective bottom piece comprises a main box body, the top end of the main box body is provided with a cavity for accommodating a module, and the main box body is provided with a fire extinguishing port communicated with the cavity; the protective top piece is mounted at one end of the opening of the cavity of the protective bottom piece and seals the opening of the cavity of the protective bottom piece; the space between the main box body and the protective top cover is closed, the cavity of the main box body is used for placing the tested module, the tested module is sealed by the protective top cover and the main box body, and if the tested module is subjected to thermal runaway, a fire extinguishing medium only needs to be filled into a fire extinguishing opening through an electromagnetic valve, so that the oxygen concentration in the cavity of the main box body is greatly reduced, and the safety of the tested module is improved. The thermal runaway of the tested product can be effectively protected, and the safety of the thermal runaway in the open area is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of module testing, and particularly relates to a protection device for module testing. Background Art

[0002] In recent years, China's new energy industry has been in a period of rapid development. The emerging industries such as new energy vehicles, power batteries, and energy storage products have greatly promoted the development of the new energy market. To meet the development requirements of various power battery products from customers and achieve the original design goals of the products, we need to understand important battery characteristic parameters such as the energy, capacity, temperature characteristics, internal resistance, voltage characteristics, rate characteristics, and cycle life of the battery. These parameters can not only demonstrate whether the battery under test meets the original design goals but also enable better management and control during the use of the battery. The charge and discharge test of products such as power batteries is an essential link. However, due to seasonal temperature changes and thus environmental temperature changes, it has a greater impact on the charge and discharge performance of the battery. For example, products need to be preheated in winter and cooled down quickly in summer. Moreover, for the charge and discharge test, especially for products that have not been mass-produced, there may be a possibility of thermal runaway due to various factors. Once thermal runaway occurs, how to quickly control the thermal runaway product, reduce the risk of personal injury, and reduce property losses is also an important function of this device. We conduct research and improvement from multiple perspectives such as charge and discharge test equipment, products under test, and actual use.

[0003] Currently, in open areas, the environmental chamber method is generally adopted to control the environmental temperature and sudden thermal runaway during testing. However, the environmental chamber has certain requirements for on-site layout, funds, etc. Not all equipment can be equipped with an environmental chamber. For module testing where an environmental chamber cannot be configured, and in the case of charge and discharge testing in open areas where the environmental temperature cannot be controlled and thermal runaway occurs accidentally, the products under test in the open area are extremely prone to thermal runaway. The products under test in the open area have a large contact area with oxygen, making it difficult to effectively control thermal runaway, resulting in the inability to provide timely and effective protection for the products under test and affecting the safety after thermal runaway occurs in the open area and other problems. Content of the Utility Model

[0004] To solve the above technical problems, the utility model seals the module under test by using a protective top cover and a main box body. The specific technical solution is as follows:

[0005] A protection device for module testing includes a protective bottom part, which includes a main box body with a cavity for accommodating the module at the top, and the main box body is provided with a fire extinguishing port communicating with the cavity; and a protective top part, which is installed at one end of the opening of the cavity of the protective bottom part and seals the opening of the cavity of the protective bottom part.

[0006] As described above, the protective top piece covers the top end of the main box body, sealing the module under test between the main box body and the protective top piece. The fire extinguishing port facilitates the injection of fire extinguishing medium into the cavity where the module under test is located. By filling the sealed cavity of the main box body with fire extinguishing medium, fire protection for the module under test can be provided in a timely manner.

[0007] Preferably, a continuously bent cooling pipe through which liquid can pass is installed at the bottom of the main box body. Among them, the cooling pipe is arranged in a serpentine shape, which can increase the contact area with the bottom end of the main box body. The cooling pipe can be connected to a chiller to improve the heat dissipation effect of the main box body.

[0008] Preferably, a number of protrusions are installed at the bottom of the main box body. Among them, the number of protrusions is used to increase the contact area with the air and improve the heat dissipation efficiency of the main box body.

[0009] Preferably, a fan is installed at the bottom end of the main box body, and the air outlet direction of the fan faces the bottom end face of the main box body. Among them, the fan blows on the protrusions and the cooling pipe. The cooling pipe absorbs the heat of the protrusions and transfers it outward through the chiller. The fan increases the heat dissipation at the cooling pipe and the protrusions, and improves the heat dissipation speed of the main box body.

[0010] Preferably, the protective top piece includes a sealing gasket located at the opening edge of the main box body and a cover body that presses on the sealing gasket and is fixed to the main box body. Among them, the cover body presses the sealing gasket between it and the main box body to improve the sealing effect between the cover body and the main box body.

[0011] Preferably, installation buckles are provided at the opening of the main box body where the periphery of the cover body is located. Among them, the installation buckles are used to detachably install the cover body at the opening of the main box body, facilitating the disassembly between the cover body and the main box body for the subsequent continued use of the module under test.

[0012] Preferably, the protective top piece further includes a heating pad installed in the cavity of the main box body. Among them, with the change of temperature, it is convenient to preheat the detection of the module under test.

[0013] Preferably, the heating pad includes a cushion block and a wire connected to each other, and one end of the wire far from the cushion block is located outside the main box body. Among them, the heating pad is heated by electricity, that is, the wire supplies power to the cushion block to make the cushion block generate heat and heat the inside of the main box body to achieve the preheating effect.

[0014] Preferably, a wire harness hole for the wire to pass through is opened on the side wall of the main box body, and the wire harness hole is provided with a soft plugging block. Among them, the plugging block plugs the wire harness hole to prevent the fire extinguishing medium from spraying out of the wire harness hole when the module under test overheats.

[0015] Preferably, a detection component is also installed on the side wall of the main box body. The detection component is used to detect at least one of the temperature, pressure, and smoke concentration in the cavity of the main box body. Among them, the detection component detects the environment where the measured module in the main box body is located in real time. When the temperature, pressure, and smoke in the main box body are abnormal when the measured module has a thermal runaway, an audible and visual alarm is issued through the audible and visual alarm, which can effectively remind the surrounding personnel in time.

[0016] As can be seen from the above technical solutions, the present utility model has the following beneficial effects:

[0017] The present utility model adopts a closure between the main box body and the protective top cover. The cavity of the main box body is used to place the measured module. The protective top cover and the main box body seal the measured module. If the measured module has a thermal runaway, only need to fill the fire extinguishing medium into the fire extinguishing port through the solenoid valve, which greatly reduces the oxygen concentration in the cavity of the main box body, can effectively protect the measured product in time, and greatly improves the safety after a thermal runaway occurs in the open area.

[0018] By arranging the cooling pipe and the protrusion at the bottom end of the main box body, the heat dissipation effect of the cavity of the main box body can be improved. At the same time, combined with the use of the fan, the heat dissipation effect of the main box body is further improved. Combined with the use of the detection component, the environmental parameters in the cavity can be detected in real time, and when the preset value is exceeded, the audible and visual alarm can give an alarm in real time, which is convenient for personnel to transfer the measured module with thermal runaway in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is an exploded structural schematic diagram of the present utility model;

[0020] Figure 2 is an internal structural schematic diagram of the protective bottom part of the present utility model;

[0021] Figure 3 is a bottom structural schematic diagram of the protective bottom part of the present utility model;

[0022] Figure 4 is a structural schematic diagram of the heating pad of the present utility model.

[0023] In the figure: 10. Protective bottom part; 101. Main box body; 102. Universal wheel; 103. Fan; 104. Blocking block; 105. Wiring harness hole; 106. Fire extinguishing port; 107. Cooling pipe; 108. Protrusion; 20. Protective top part; 201. Sealing gasket; 202. Heating pad; 2021. Spacer block; 2022. Conductive wire; 203. Cover body; 204. Mounting buckle; 30. Detection component; 301. Temperature & pressure sensor; 302. Smoke sensor; 303. Audible and visual alarm; 40. Solenoid valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The present utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments. Before elaborating on the technical solutions of each embodiment of the present utility model, the nouns and terms involved will be explained. In this specification, components with the same name or the same reference numeral represent similar or identical structures, and are for illustrative purposes only.

[0025] As Figure 1 and Figure 2 shown, a protection device for module testing includes a protection bottom part 10, which includes a main box body 101 with a cavity for accommodating a module at the top, and the main box body 101 is provided with a fire extinguishing opening 106 communicating with the cavity; and a protection top part 20, which is installed at one end of the opening of the cavity of the protection bottom part 10 and seals the opening of the cavity of the protection bottom part 10. Among them, the module to be tested is placed into the cavity of the main box body 101, and the protection top part 20 covers the top of the main box body 101, sealing the module to be tested between the main box body 101 and the protection top part 20. The fire extinguishing opening 106 facilitates injecting a fire extinguishing medium into the cavity where the module to be tested is located. The fire extinguishing medium can be water, carbon dioxide, dry powder, steam, carbon tetrachloride, inert gas (such as argon, nitrogen), heptafluoropropane, etc. Among them, the fire extinguishing medium is preferably water to reduce the subsequent cleaning burden on the main box body 101.

[0026] As Figure 3 shown, a continuously bent cooling pipe 107 capable of passing liquid inside is installed at the bottom of the main box body 101. Among them, the cooling pipe 107 is preferably arranged in a serpentine shape, which can increase the contact area with the bottom end of the main box body 101. The cooling pipe 107 is located below the main box body 101, and the cooling pipe 107 can be connected to a chiller for dissipating heat from the main box body 101.

[0027] As Figure 3 shown, a plurality of protrusions 108 are installed at the bottom of the main box body 101. The plurality of protrusions 108 are used to increase the contact area with the air, improve the heat dissipation efficiency of the main box body 101, and at the same time, the protrusions 108 can also play a role in fitting and limiting the side wall of the cooling pipe 107, facilitating the fixation of the cooling pipe 107.

[0028] A fan 103 is installed at the bottom end of the main box body 101. The air outlet direction of the fan 103 faces the bottom end surface of the main box body 101. The fan 103 blows towards the bottom end of the main box body 101, and its blowing direction faces the surfaces of the plurality of protrusions 108 and the cooling pipe 107, which is used to increase the heat dissipation at the cooling pipe 107 and the protrusions 108, and timely blows out the heat dissipated by the protrusions 108 from the other end of the main box body 101, which is used to assist in increasing heat dissipation.

[0029] As Figure 2As shown, the protective top part 20 includes a gasket 201 located at the opening edge of the main box body 101 and a cover body 203 that presses on the gasket 201 and is fixed to the main box body 101. Among them, the gasket 201 is located at the edge of the opening between the cover body 203 and the main box body 101, and the cover body 203 presses on the opening of the main box body 101. The gasket 201 can make the main box body 101 and the cover body 203 fit tightly. The gasket 201 is preferably made of silicone foam material to improve the sealing effect.

[0030] As Figure 1 and Figure 2 shown, installation buckles 204 are provided at the periphery of the cover body 203 and the opening of the main box body 101. Among them, the installation buckles 204 are used to tightly fasten and fix the cover body 203 to the main box body 101, which is convenient for disassembly so as to be used for the subsequent measured module. There are various types of installation buckles 204, and the specific implementation methods are as follows:

[0031] Embodiment 1:

[0032] The installation buckles 204 are located on three adjacent sides of the cover body 203. The other side of the cover body 203 is rotatably connected to the main box body 101 through a hinge. After the cover body 203 rotates, it covers the opening of the main box body 101 and is locked by the installation buckles 204 on the three sides of the cover body 203, which is convenient for taking out or putting the module into the cavity of the main box body 101, and improves the convenience of subsequent use of the module.

[0033] Embodiment 2:

[0034] The installation buckles 204 are evenly installed around the cover body 203. The cover body 203 directly presses around the four sides of the gasket 201 and is evenly locked with the four sides of the opening of the main box body 101 through the installation buckles 204, that is, the cover body 203 is pressed on the opening of the main box body 101, which is convenient for disassembling the cover body 203 from the main box body 101 and is convenient for putting in and taking out the subsequent measured module.

[0035] As Figure 1 shown, the protective top part 20 further includes a heating pad 202 installed in the cavity of the main box body 101. Among them, the heating pad 202 is directly placed inside the main box body 101 without being fixed. During testing, the measured module is directly placed on the heating pad 202 and is tightly attached to the heating pad 202 by the gravity of the measured module. The heating pad 202 is used to preheat the measured module when the ambient temperature is low, and its temperature can be adjusted according to the actual situation, which is convenient for preheating the measured module in winter for detection.

[0036] As Figure 4As shown, the heating pad 202 includes a pad 2021 and a wire 2022 that are connected to each other. One end of the wire 2022 away from the pad 2021 is located outside the main box body 101. Among them, the wire 2022 provides power transmission for the pad 2021. The pad 2021 is energized and heated, and the temperature inside the main box body 101 is raised, which is convenient for preheating the module under test.

[0037] As Figure 1 and Figure 2 shown, a wire harness hole 105 for the wire 2022 to pass through is provided on the side wall of the main box body 101. The wire harness hole 105 is provided with a soft plug 104. Among them, the wire harness hole 105 facilitates the wire 2022 to extend out of the cavity of the main box body 101. The plug 104 blocks the wire harness hole 105 to prevent the fire extinguishing medium from spraying outwards through the wire harness hole 105 when the module under test gets out of control in terms of heat. The plug 104 is made of a soft material, such as silicone material, to prevent the wire 2022 from being damaged due to extrusion.

[0038] As Figure 2 shown, a detector 30 is further installed on the side wall of the main box body 101. The detector 30 is used to detect at least one of the temperature, pressure and smoke concentration in the cavity of the main box body 101. The detector 30 preferably detects the cavity temperature, pressure and smoke concentration simultaneously to facilitate real-time detection of the environment where the module under test is located in the main box body 101. The detector 30 includes a temperature & pressure sensor 301, a smoke sensor 302 and an audible and visual alarm 303 installed on the side wall of the main box body 101. The temperature & pressure sensor 301 and the smoke sensor 302 are installed on the inner wall of the cavity of the main box body 101. The audible and visual alarm 303 is installed on the outer wall of the main box body 101 and is electrically connected to the temperature & pressure sensor 301 and the smoke sensor 302. When the temperature, pressure and smoke appear abnormally inside the main box body 101 when the module under test has a thermal runaway, an audible and visual alarm is issued through the audible and visual alarm 303 to timely remind the surrounding personnel.

[0039] In addition to the above, universal wheels 102 are further installed around the bottom end of the main box body 101, a handle is installed on the side wall of the main box body 101, and a solenoid valve 40 is installed at the fire extinguishing port 106 of the main box body 101. When the module under test gets out of control in terms of heat in the cavity of the main box body 101, the fire extinguishing medium is filled into the main box body 101 through the solenoid valve 40. After the solenoid valve 40 is closed, personnel can push the main box body 101 from the open area to other positions by holding the handle and using the universal wheels 102, and the module under test can be quickly controlled and transferred, thereby greatly improving the safety and other issues after a thermal runaway occurs.

[0040] The above-described embodiments are merely descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A protective device for module testing, characterized in that: include: A protective bottom member (10) comprises a main box body (101) with a cavity for accommodating the module at the top, and the main box body (101) is provided with a fire extinguishing port (106) communicating with the cavity; and The protective top member (20) is installed at one end of the cavity opening of the protective bottom member (10) and seals the cavity opening of the protective bottom member (10).

2. The module testing protection device according to claim 1, characterized in that: A cooling pipe (107) which is continuously bent and into which liquid can flow is installed at the bottom of the main box body (101).

3. The module testing protection device according to claim 1, characterized in that: A plurality of protrusions (108) are installed on the bottom of the main box body (101).

4. The module testing protection device according to claim 1, characterized in that: A fan (103) is installed at the bottom end of the main box body (101), and the air outlet direction of the fan (103) is toward the bottom end surface of the main box body (101).

5. The module testing protection device according to claim 1, characterized in that: The protective top member (20) comprises a sealing gasket (201) located at the opening edge of the main box body (101) and a cover body (203) pressed against the sealing gasket (201) and fixed to the main box body (101).

6. The module testing protection device according to claim 5, characterized in that: The periphery of the cover body (203) and the opening of the main box body (101) are provided with mounting buckles (204).

7. The module testing protection device according to claim 1, characterized in that: The protective top member (20) further comprises a heating pad (202) installed in the cavity of the main box body (101).

8. The module testing protection device according to claim 7, characterized in that: The heating pad (202) comprises a pad block (2021) and a wire (2022) which are connected to each other, and one end of the wire (2022) away from the pad block (2021) is located outside the main box (101).

9. The module testing protection device according to claim 8, characterized in that: The side wall of the main box body (101) is provided with a harness hole (105) for the wire (2022) to pass through, and the harness hole (105) is provided with a soft blocking block (104).

10. The module testing protection device according to claim 1, characterized in that: A detection component (30) is also installed on the side wall of the main box body (101), and the detection component (30) is used to detect at least one of the temperature, pressure and smoke concentration of the cavity of the main box body (101).

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