Power battery detection cabinet

Abstract

The power battery detection cabinet comprises a cabinet body, a battery rack assembly and an air cooling assembly, the cabinet body is provided with a containing groove, the front end of the cabinet body is provided with an opening communicated with the containing groove, the battery rack assembly is arranged in the containing groove, the battery rack assembly comprises a shell and a partition plate, the shell is provided with at least two containing cavities arranged side by side at intervals, and the partition plate is arranged in the containing cavity. The containing cavities are provided with receding openings communicating with the openings, the adjacent containing cavities are separated through partition plates, the partition plates are provided with air channels, the air channels are configured to communicate the adjacent containing cavities, the air channels are provided with air inlets and air outlets, the air inlets and the air outlets are staggered in the vertical direction, and a contact assembly is arranged in each containing cavity. The contact assembly is used for being electrically connected with the batteries located in the containing cavities, the air cooling assembly comprises an air inlet pipe and an air outlet pipe, the air inlet pipe is communicated with the first containing cavity, the air outlet pipe is communicated with the last containing cavity, and due to the fact that the air inlet and the air outlet are arranged in a staggered mode, other normal batteries can be prevented from being affected when the batteries are on fire.

Description

Technical Field

[0001] This utility model relates to the technical field of power battery testing equipment, and in particular to a power battery testing cabinet. Background Technology

[0002] Currently, most new energy vehicle batteries use lithium-ion batteries, which are complex systems containing positive electrodes, negative electrodes, separators, electrolytes, current collectors, binders, conductive agents, etc. Lithium-ion batteries are roughly divided into cylindrical batteries, square batteries, and pouch batteries according to their shape, and their production processes differ to some extent; however, the general process includes electrode manufacturing, cell synthesis, and formation and packaging.

[0003] Battery formation involves activating the cell during the first charge, during which an effective passivation film is formed on the negative electrode surface to initialize the lithium battery. Depending on the temperature, current, and electrolyte filling port conditions during formation, the formation process can be broadly categorized into high-temperature formation, low-temperature formation, high-current formation, and low-current formation. During battery formation, air cooling is typically used to control the temperature. However, in practice, deviations in the battery manufacturing process or circuit problems can lead to malfunctions, which can easily cause fires and affect other functioning batteries. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a power battery testing cabinet that can prevent abnormal expansion from affecting other normal batteries.

[0005] A power battery testing cabinet according to an embodiment of the present invention includes:

[0006] The cabinet has a receiving slot, and the front end of the cabinet has an opening that connects to the receiving slot;

[0007] A battery rack assembly is disposed within the receiving slot. The battery rack assembly includes a housing and a partition. The housing has at least two side-by-side spaced receiving cavities. Each receiving cavity has a clearance opening that connects to the opening. Adjacent receiving cavities are separated by the partition. The partition has an air duct configured to connect adjacent receiving cavities. The air duct has an air inlet and an air outlet. The air inlet and air outlet are staggered in the vertical direction. Each receiving cavity is provided with a contact component for electrically connecting to a battery located within the receiving cavity.

[0008] The air-cooled assembly includes an air inlet pipe and an air outlet pipe, wherein the air inlet pipe is connected to the first receiving cavity and the air outlet pipe is connected to the last receiving cavity.

[0009] The power battery testing cabinet according to the embodiments of this utility model has at least the following beneficial effects:

[0010] When the power battery cabinet is working, the battery is placed into the corresponding housing cavity. An external power supply supplies power to the corresponding battery through the contact components to enable the battery to complete the formation process. By setting up heat dissipation components, cold air enters the first housing cavity from the air inlet pipe, and then enters the remaining housing cavities in sequence through the air ducts of the corresponding partitions, and then is discharged from the air outlet pipe. When a battery in one housing cavity catches fire, because the air inlet and air outlet are set up in a staggered manner, even if a battery in one housing cavity catches fire, the flame cannot enter the adjacent housing cavity through the air inlet or air outlet, which can prevent the fire of one battery from affecting other normal batteries.

[0011] According to some embodiments of the present invention, the contact assembly includes a slide and a return spring. The slide is disposed at the top of the receiving cavity and can slide in the up-down direction. The return spring is used to make the slide slide in the direction close to the bottom wall of the receiving cavity. The slide has a first contact point and a second contact point on the side facing the bottom of the receiving cavity. One of the first contact point and the second contact point is used to connect to the positive terminal of the battery, and the other is used to connect to the negative terminal of the battery.

[0012] According to some embodiments of the present invention, the slide is provided with a guide portion at one end near the opening, and the distance between the guide portion and the bottom of the receiving cavity gradually decreases from the front end of the cabinet to the rear end of the cabinet.

[0013] According to some embodiments of the present invention, a roller is rotatably connected to the bottom of the receiving cavity, and multiple rollers are configured to support the battery.

[0014] According to some embodiments of the present invention, a fixing structure is provided between the partition and the shell.

[0015] According to some embodiments of the present invention, the fixing structure includes a first fixing groove and a second fixing groove disposed inside the housing. The first fixing groove and the second fixing groove are disposed opposite each other in the vertical direction. The upper end of the partition is accommodated in the first fixing groove and abuts against the side wall of the first fixing groove. The lower end of the partition is accommodated in the second fixing groove and abuts against the side wall of the second fixing groove.

[0016] According to some embodiments of the present invention, each of the receiving cavities is provided with a temperature sensor, which is used to detect the temperature of the corresponding receiving cavity.

[0017] According to some embodiments of this utility model, a fireproof door is also included, which is rotatably connected to the cabinet to open or close the receiving slot.

[0018] According to some embodiments of the present invention, the fire door is provided with a handle at the front end and an observation window, which is made of transparent material.

[0019] According to some embodiments of the present invention, multiple receiving slots are configured, and the array of multiple receiving slots is arranged at intervals, and multiple battery rack assemblies are correspondingly configured.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is a schematic diagram of the power battery testing cabinet according to an embodiment of the present utility model, wherein the protective door closes the receiving slot;

[0023] Figure 2 This is a schematic diagram of the power battery testing cabinet according to an embodiment of the present utility model, wherein the protective door opens to receive the slot;

[0024] Figure 3 This is an assembly diagram of the battery holder assembly and contact assembly according to an embodiment of the present utility model;

[0025] Figure 4 for Figure 3 Top view;

[0026] Figure 5 for Figure 4 Sectional view of line AA in the middle;

[0027] Figure 6 for Figure 4 A cross-sectional view along the BB line.

[0028] Figure label:

[0029] Cabinet 100, opening 110, battery rack assembly 200, receiving cavity 201, clearance opening 202, shell 210, first fixing groove 211, second fixing groove 212, partition 220, air duct 221, air inlet 222, air outlet 223, roller 230, contact assembly 300, slide 310, guide part 311, return spring 320, first contact point 330, second contact point 340, air inlet pipe 410, air outlet pipe 420, fire door 500, observation window 510, handle 520. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0031] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0033] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0034] In related technologies, battery formation involves activating the cell through the first charge. During this process, an effective passivation film is formed on the negative electrode surface to initialize the lithium battery. Depending on the temperature, current, and electrolyte filling port conditions during lithium battery formation, the formation process can be broadly categorized into high-temperature formation, low-temperature formation, high-current formation, and low-current formation. During battery formation, air cooling is typically used to control the temperature. However, in practice, deviations in battery manufacturing processes or circuit problems can lead to malfunctions. These malfunctions can easily cause fires, affecting other functioning batteries.

[0035] Reference Figures 1 to 5According to an embodiment of the present invention, a power battery testing cabinet includes a cabinet body 100, a battery rack assembly 200, and an air-cooling assembly. The cabinet body 100 has a receiving groove, and the front end of the cabinet body 100 has an opening 110 communicating with the receiving groove. The battery rack assembly 200 is disposed in the receiving groove. The battery rack assembly 200 includes a housing 210 and a partition 220. The housing 210 has at least two side-by-side spaced receiving cavities 201. Each receiving cavity 201 has a clearance opening 202 communicating with the opening 110. Adjacent receiving cavities 201 are separated by the partition 220. The partition 220 has an air duct 221, which is configured to connect adjacent receiving cavities 201. The air duct 221 has an air inlet 22. 2 and air outlet 223, the air inlet 222 and air outlet 223 are staggered in the vertical direction. Each receiving cavity 201 is provided with a contact component 300, which is used to electrically connect with the battery located in the receiving cavity 201. The air-cooling component includes an air inlet pipe 410 and an air outlet pipe 420. The air inlet pipe 410 is connected to the first receiving cavity 201, and the air outlet pipe 420 is connected to the last receiving cavity 201. Since the air inlet 222 and air outlet 223 are staggered, even if the battery in one of the receiving cavities 201 catches fire, the flame cannot enter the adjacent receiving cavity 201 through the air inlet 222 or the air outlet 223, which can prevent the fire of the battery from affecting other normal batteries.

[0036] Specifically, when the power battery cabinet is working, the battery is placed in the corresponding receiving cavity 201. An external power supply supplies power to the corresponding battery through the contact component 300 so that the battery can complete the formation process. By setting up a heat dissipation component, cold air enters the first receiving cavity 201 from the air inlet duct 410, and then enters the remaining receiving cavities 201 in sequence through the air duct 221 of the corresponding partition 220, and then is discharged from the air outlet duct 420. When a battery in one of the receiving cavities 201 catches fire, since the air inlet 222 and the air outlet 223 are staggered, even if a battery in one of the receiving cavities 201 catches fire, the flame cannot enter the adjacent receiving cavity 201 through the air inlet 222 or the air outlet 223, which can prevent the fire from affecting other normal batteries.

[0037] It should be noted that during battery formation, the temperature inside the housing cavity 201 rises. By setting up a heat dissipation component, the temperature inside the housing cavity 201 can be reduced, thereby reducing the risk of thermal runaway of the battery and improving the reliability of the power battery testing cabinet. This will not be elaborated on here.

[0038] In some embodiments of this utility model, the contact assembly 300 includes a slide 310 and a return spring 320. The slide 310 is disposed on the top of the receiving cavity 201 and can slide in the up and down direction. The return spring 320 is used to make the slide 310 slide in the direction close to the bottom wall of the receiving cavity 201. The slide 310 has a first contact point 330 and a second contact point 340 on the side facing the bottom of the receiving cavity 201. One of the first contact point 330 and the second contact point 340 is used to connect to the positive terminal of the battery, and the other is used to connect to the negative terminal of the battery. This can ensure that the first contact point 330 and the second contact point 340 are stably electrically connected to the battery, thereby improving the reliability of the power battery testing cabinet.

[0039] Specifically, when installing the battery, the battery is inserted into the receiving cavity 201. At this time, the battery abuts against the lower side of the slide 310 to lift the slide 310. The return spring 320 drives the slide 310 to move downward, so that the slide 310 pushes the first contact point 330 and the second contact point 340 to connect with the positive and negative terminals of the battery, respectively. This ensures that the first contact point 330 and the second contact point 340 are stably electrically connected to the battery, thereby improving the reliability of the power battery testing cabinet.

[0040] It should be noted that one end of the return spring 320 abuts against the housing 210, and the other end of the return spring 320 abuts against the slide 310, which will not be described in detail here.

[0041] It should be noted that the contact component 300 can also be a spring-loaded striker, and there is no limitation on this.

[0042] In some embodiments of this utility model, the slide 310 is provided with a guide part 311 at one end near the opening 110. From the front end of the cabinet 100 to the rear end of the cabinet 100, the distance between the guide part 311 and the bottom of the receiving cavity 201 gradually decreases, which can facilitate the insertion of the battery into the receiving cavity 201 and reduce the labor intensity of the operator.

[0043] Specifically, the guide part 311 has a chamfered structure, and the distance between the guide part 311 and the bottom of the receiving cavity 201 gradually decreases from the front end of the cabinet 100 to the rear end of the cabinet 100, which facilitates the insertion of the battery into the receiving cavity 201 and reduces the labor intensity of the operator.

[0044] It should be noted that the guide part 311 can also be a rounded corner structure, as long as it can reduce the labor intensity of the operator, and there is no restriction here.

[0045] Reference Figure 6In some embodiments of this utility model, a roller 230 is rotatably connected to the bottom of the receiving cavity 201. Multiple rollers 230 are configured to support the battery. The rollers 230 can assist the battery in moving within the receiving cavity 201, which can reduce the labor intensity of operators, improve the accuracy of battery transfer, and thus improve the efficiency of battery formation testing.

[0046] Specifically, each receiving cavity 201 is provided with multiple rollers 230 at its bottom, extending from the front end to the rear end of the cabinet 100. The multiple rollers 230 are arranged side by side at intervals. The rollers 230 make rolling contact with the battery, which can reduce the friction force on the battery and assist the battery in moving within the receiving cavity 201. This can reduce the labor intensity of operators, improve the accuracy of battery transfer, and thus improve the efficiency of battery formation testing.

[0047] Reference Figure 5 In some embodiments of this utility model, a fixing structure is provided between the partition 220 and the housing 210, which facilitates the connection and fixing of the partition 220.

[0048] In some embodiments of this utility model, the fixing structure includes a first fixing groove 211 and a second fixing groove 212 disposed inside the housing 210. The first fixing groove 211 and the second fixing groove 212 are arranged opposite to each other in the vertical direction. The upper end of the partition 220 is accommodated in the first fixing groove 211 and abuts against the side wall of the first fixing groove 211. The lower end of the partition 220 is accommodated in the second fixing groove 212 and abuts against the side wall of the second fixing groove 212, which facilitates the connection and fixing of the partition 220.

[0049] Specifically, when assembling the battery rack assembly 200, the partition 220 is aligned with the first fixing groove 211 and the second fixing groove 212. From the front end of the cabinet 100 to the rear end of the cabinet 100, the partition 220 is inserted into the housing 210. Since the upper side of the partition 220 abuts against the side wall of the first fixing groove 211 and the lower side of the partition 220 abuts against the side wall of the second fixing groove 212, the movement of the partition 220 within the housing 210 can be restricted, which facilitates the connection and fixing of the partition 220.

[0050] It should be noted that the partition 220 can also be connected to the housing 210 by welding, wherein the welding method includes, but is not limited to, resistance welding, laser welding or ultrasonic welding.

[0051] In some embodiments of this utility model, each receiving cavity 201 is provided with a temperature sensor. The temperature sensor is used to detect the temperature of the corresponding receiving cavity 201, which facilitates real-time monitoring of the temperature inside the receiving cavity 201 and temperature control of the battery inside the cabinet 100.

[0052] It should be noted that the temperature sensor can be a thermistor temperature sensor or a thermocouple temperature sensor, etc., and there are no restrictions here.

[0053] Reference Figure 1 , Figure 2 In some embodiments of this utility model, a fire door 500 is also included. The fire door 500 is rotatably connected to the cabinet 100 to open or close the receiving slot, which can improve the safety of the power battery testing cabinet.

[0054] Specifically, the fire door 500 has good fire resistance and heat insulation properties. When the battery in the housing cavity 201 catches fire, the fire door 500 can block the flame in the housing cavity 201, thereby improving the safety of the power battery testing cabinet.

[0055] It should be noted that the fire door 500 can also be slidably connected to the cabinet 100, as long as it can be easily opened or closed to accommodate the slot, and there are no restrictions on this.

[0056] It should be noted that the fire door 500 can be a steel fire door or a wooden fire door, and there are no restrictions here.

[0057] Reference Figure 1 , Figure 2 In some embodiments of this utility model, the fire door 500 is provided with a handle 520 at the front end and an observation window 510. The observation window 510 is made of transparent material. The handle 520 makes it easy for users to open or close the insulated fire door 500, and the observation window 510 makes it easy to observe the inside of the chemical forming cabinet 100.

[0058] It should be noted that the observation window 510 can be made of transparent materials such as tempered glass, and there are no restrictions on this.

[0059] Reference Figure 1 , Figure 2 In some embodiments of this utility model, multiple receiving slots are configured, and the array of multiple receiving slots is arranged at intervals. Multiple battery rack assemblies 200 are correspondingly configured, which can perform formation on multiple batteries at one time, thereby improving the formation efficiency of the power battery testing cabinet.

[0060] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The present invention has been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the invention.

Claims

1. A power battery testing cabinet, characterized in that, include: The cabinet (100) is provided with a receiving slot, and the front end of the cabinet (100) is provided with an opening (110) that communicates with the receiving slot. A battery rack assembly (200) is disposed in the receiving slot. The battery rack assembly (200) includes a housing (210) and a partition (220). The housing (210) has at least two side-by-side spaced receiving cavities (201). Each receiving cavity (201) has a clearance opening (202) that connects to the opening (110). Adjacent receiving cavities (201) are separated by the partition (220). The partition (220) has an air duct (221) that connects adjacent receiving cavities (201). The air duct (221) has an air inlet (222) and an air outlet (223). The air inlet (222) and the air outlet (223) are staggered in the vertical direction. Each receiving cavity (201) is provided with a contact component (300) for electrically connecting with the battery located in the receiving cavity (201). The air-cooled assembly includes an air inlet pipe (410) and an air outlet pipe (420), the air inlet pipe (410) being connected to the first of the receiving cavities (201) and the air outlet pipe (420) being connected to the last of the receiving cavities (201).

2. The power battery testing cabinet according to claim 1, characterized in that, The contact assembly (300) includes a slide (310) and a return spring (320). The slide (310) is located on the top of the receiving cavity (201) and can slide in the up and down direction. The return spring (320) is used to make the slide (310) slide in the direction close to the bottom wall of the receiving cavity (201). The slide (310) has a first contact point (330) and a second contact point (340) on the side facing the bottom of the receiving cavity (201). One of the first contact point (330) and the second contact point (340) is used to connect to the positive terminal of the battery, and the other is used to connect to the negative terminal of the battery.

3. The power battery testing cabinet according to claim 2, characterized in that, The slide (310) has a guide part (311) at one end near the opening (110). The distance between the guide part (311) and the bottom of the receiving cavity (201) gradually decreases from the front end of the cabinet (100) to the rear end of the cabinet (100).

4. The power battery testing cabinet according to claim 1, characterized in that, The bottom of the receiving cavity (201) is rotatably connected to a roller (230), and multiple rollers (230) are arranged thereon. The rollers (230) are used to support the battery.

5. The power battery testing cabinet according to claim 1, characterized in that, A fixing structure is provided between the partition (220) and the shell (210).

6. The power battery testing cabinet according to claim 5, characterized in that, The fixing structure includes a first fixing groove (211) and a second fixing groove (212) disposed inside the housing (210). The first fixing groove (211) and the second fixing groove (212) are arranged opposite to each other in the vertical direction. The upper end of the partition (220) is accommodated in the first fixing groove (211) and abuts against the side wall of the first fixing groove (211). The lower end of the partition (220) is accommodated in the second fixing groove (212) and abuts against the side wall of the second fixing groove (212).

7. The power battery testing cabinet according to claim 1, characterized in that, Each of the accommodating cavities (201) is provided with a temperature sensor, which is used to detect the temperature of the corresponding accommodating cavity (201).

8. The power battery testing cabinet according to claim 1, characterized in that, It also includes a fire door (500), which is rotatably connected to the cabinet (100) to open or close the receiving slot.

9. The power battery testing cabinet according to claim 8, characterized in that, The fire door (500) has a handle (520) at the front end and an observation window (510) made of transparent material.

10. The power battery testing cabinet according to claim 1, characterized in that, The receiving slots are configured in multiple ways, and the array of multiple receiving slots is arranged at intervals. The battery rack assembly (200) is configured in multiple ways accordingly.

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