Battery capacity grading device
By combining the cooling mechanism and the temperature control mechanism, the problem of difficult temperature control in the working area of the capacity testing device is solved, achieving precise temperature control in the working area and improving the accuracy of capacity testing.
Patent Information
- Application Number
- CN202520398198.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-07
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-03-07
AI Technical Summary
During battery production, it is difficult to maintain the working temperature of the capacity grading device precisely at the preset temperature, which affects the accuracy of capacity grading detection.
It employs a cooling and temperature control mechanism, using a cooling medium circulation and airflow generated by a fan to cool the working area, and combines temperature monitoring and flow regulators to precisely control the temperature of the working area.
It enables precise control of the working area temperature, improving the accuracy of capacity detection.
Smart Images
Figure CN223897611U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of battery technology, and in particular to a battery capacity grading device. Background Technology
[0002] The information disclosed in this background section is intended only to enhance the understanding of the general background of this disclosure and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art.
[0003] In the battery manufacturing process, a capacity grading device is typically used to grade and group individual battery cells. Because the capacity grading process has strict requirements on the operating temperature within the grading device, and the battery cells generate heat during testing, the temperature of the operating area can rise, potentially affecting the accuracy of the capacity grading test. Therefore, accurately maintaining the operating temperature within the capacity grading device at a preset temperature is a pressing problem that needs to be solved. Utility Model Content
[0004] In view of this, the purpose of this application is to provide a battery capacity testing device, which aims to solve the technical problem of how to accurately maintain the temperature of the working area inside the capacity testing device at a preset temperature in order to improve the accuracy of capacity testing.
[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:
[0006] Embodiments of this application provide a battery capacity grading device, comprising:
[0007] The capacity distribution mechanism includes a frame and a capacity distribution compartment. The frame has a working area, and the capacity distribution compartment is located on the frame and in the working area. The capacity distribution compartment can accommodate multiple battery cells.
[0008] A cooling mechanism includes a cooler, an inlet pipe, and an outlet pipe. The cooler includes a first fan, a mounting bracket, and cooling pipes. The first fan and the mounting bracket are mounted on the frame. The cooling pipes are mounted on the mounting bracket and have an inlet end and an outlet end for the cooling medium to enter and exit. The inlet pipe is connected to the inlet end, and the outlet pipe is connected to the outlet end. The first fan is capable of generating airflow that flows through the cooling pipes and reaches the working area.
[0009] The temperature control mechanism includes a temperature monitor and a flow regulator. The temperature monitor is located on the frame or the compartment and is capable of monitoring the temperature of the working area. The flow regulator is located on the inlet pipe or the outlet pipe.
[0010] In one embodiment, the flow regulator is an electronically controlled proportional valve, and the temperature control mechanism further includes a controller, which is electrically connected to the temperature monitor and the electronically controlled proportional valve.
[0011] In one embodiment, the battery capacity grading device has a first direction, the mounting bracket is arranged in a ring, the cooling pipe is disposed in the mounting bracket, the cooling pipe has multiple bends, and a gap is formed between adjacent bends or between the cooling pipe and the mounting bracket, which runs through the first direction. The first fan is located on one side of the mounting bracket along the first direction, and the working area is located on the other side of the mounting bracket along the first direction. The first fan is capable of generating airflow that passes through the gap and reaches the working area.
[0012] In one embodiment, the battery capacity grading device has a first direction, and the cooler is provided on both sides of the frame along the first direction. The liquid inlet pipe includes a main liquid inlet pipe and a plurality of branch liquid inlet pipes. The number of branch liquid inlet pipes corresponds one-to-one with the number of coolers. One end of each branch liquid inlet pipe is connected to the main liquid inlet pipe, and the other end of each branch liquid inlet pipe is connected to the liquid inlet end of one of the coolers. The liquid outlet pipe includes a main liquid outlet pipe and a plurality of branch liquid outlet pipes. The number of branch liquid outlet pipes corresponds one-to-one with the number of coolers. One end of each branch liquid outlet pipe is connected to the main liquid outlet pipe, and the other end of each branch liquid outlet pipe is connected to the liquid outlet end of one of the coolers. The flow regulator is located on the main liquid inlet pipe or the main liquid outlet pipe.
[0013] In one embodiment, the battery capacity grading device further includes a ventilation mechanism disposed on the frame and capable of discharging airflow from the working area.
[0014] In one embodiment, the battery capacity grading device has a second direction, the capacity grading mechanism further includes a side plate disposed on one side of the frame along the second direction, and the exhaust mechanism includes a plurality of second fans disposed on the side plate, the second fans being able to exhaust airflow in the working area.
[0015] In one embodiment, the frame includes a top plate, a bottom plate, and at least three supports, each of the supports being connected between the top plate and the bottom plate, the compartment being disposed on the bottom plate, the mounting bracket being disposed on the support, and the temperature monitor being disposed on the top plate or the support.
[0016] In one embodiment, the battery capacity grading device has a first direction and a third direction that are perpendicular to each other, the top plate and the bottom plate are disposed opposite each other in the third direction, the cooler and the capacity grading compartment are spaced apart in the first direction, the capacity grading compartment has a compartment opening disposed toward the top plate, and at least a portion of the cooler is located between the top plate and the compartment opening in the third direction.
[0017] In one embodiment, the battery capacity grading device has a third direction, the top plate and the bottom plate are arranged opposite each other in the third direction, and multiple temperature monitors are provided. The multiple temperature monitors are located on the top plate, and when projected on a plane perpendicular to the third direction, the projection areas of the multiple temperature monitors are distributed circumferentially along the projection area of the capacity grading compartment.
[0018] In one embodiment, the frame is provided with a positioning seat located in the working area and engaging with the compartment for positioning.
[0019] The beneficial effects of this application are as follows:
[0020] In the battery capacity testing device provided in this application, the cooling medium flows through the inlet and outlet pipes in the cooling pipeline. A first fan generates airflow that flows through the cooling pipeline and reaches the working area. The cooling medium cools the airflow generated by the first fan, thereby achieving air-cooled cooling of the working area. At the same time, a temperature monitor can monitor the temperature of the working area. When the temperature of the working area is lower than the preset temperature, the flow rate of the cooling medium is reduced by the flow regulator. When the temperature of the working area is higher than the preset temperature, the flow rate of the cooling medium is increased by the flow regulator. This allows the temperature of the working area to be accurately controlled at the preset temperature, thereby reducing the impact of the working area temperature on the capacity testing and improving the accuracy of the battery capacity testing.
[0021] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description
[0022] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0023] Figure 1 A three-dimensional assembly structure diagram of a battery capacity grading device and multiple battery cells in one embodiment of this application is shown;
[0024] Figure 2 It shows Figure 1 Enlarged structural diagram of region A in the middle;
[0025] Figure 3 This illustration shows a schematic diagram of the assembly structure of a battery capacity grading device and multiple battery cells from one perspective in one embodiment of this application.
[0026] Explanation of key component symbols:
[0027] 111-Frame; 1101-Working area; 1111-Top plate; 1112-Bottom plate; 1113-Support column; 112-Capacity compartment; 1121-Compartment opening; 113-Positioning seat; 114-Side plate; 1411-First fan; 1412-Mounting bracket; 1413-Cooling pipe; 14131-Bend; 14132-Gap; 1421-Inlet branch pipe; 1431-Outlet branch pipe; 151-Temperature monitor; 153-Controller; 161-Second fan; X-First direction; Y-Second direction; Z-Third direction; 200-Battery cell. Detailed Implementation
[0028] The embodiments of this application are described in detail below. Examples of the 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 application, and should not be construed as limiting this application.
[0029] In the description of this application, the terms "center", "longitudinal", "lateral", "length", "width", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application 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 application.
[0030] Furthermore, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Moreover, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0031] In the description of this application, the terms "first," "second," etc., are used to distinguish different objects and should not be construed as indicating or implying a specific order or hierarchy, or implicitly specifying the number of technical features indicated. Therefore, a feature marked "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly defined.
[0032] In the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0033] In the description of this application, the term "and / or" indicates that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. Additionally, the character " / " generally indicates that the preceding and following objects have an "or" relationship.
[0034] In the description of this application, "parallel" includes not only the case of absolute parallelism, but also the case of approximate parallelism as commonly understood in engineering; similarly, "perpendicular" also includes not only the case of absolute perpendicularity, but also the case of approximate perpendicularity as commonly understood in engineering. For example, if the angle between two directions is 80° to 90°, the two directions can be considered perpendicular; if the angle between two directions is 0° to 10°, the two directions can be considered parallel.
[0035] During the battery production process, a capacity grading device is usually used to grade individual battery cells. This involves charging and discharging the sealed battery cells and testing parameters such as capacity, initial efficiency, charging constant current ratio, discharge plateau voltage, and internal resistance to classify and group the battery cells.
[0036] Because the capacity grading process has strict requirements on the working temperature of the capacity grading device, and the individual battery cells generate heat during the testing process, causing the working temperature to rise, which can easily affect the accuracy of the capacity grading test. How to accurately maintain the working temperature of the capacity grading device at the preset temperature is a problem that urgently needs to be solved.
[0037] To address the aforementioned technical problems, embodiments of this application provide a battery capacity grading device, relating to the field of battery technology, primarily used for grading individual battery cells. It should be noted that the aforementioned battery cells can be applied to electrical devices or energy storage devices.
[0038] For example, electrical devices can be vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools. Vehicles can be gasoline-powered cars, natural gas-powered cars, and new energy vehicles, with new energy vehicles including pure electric vehicles, hybrid electric vehicles, and range-extended electric vehicles; spacecraft can be airplanes, rockets, space shuttles, drones, and spacecraft; electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys; power tools can be metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers; energy storage devices include energy storage containers and energy storage power stations; no specific restrictions are placed on the types of electrical devices and energy storage devices here.
[0039] like Figures 1 to 3 As shown, the battery capacity grading device provided in this embodiment includes a capacity grading mechanism, a cooling mechanism, and a temperature control mechanism.
[0040] The capacity distribution mechanism includes a frame 111 and a capacity distribution chamber 112. The frame 111 has a working area 1101, and the capacity distribution chamber 112 is located on the frame 111 and in the working area 1101. The capacity distribution chamber 112 can accommodate multiple battery cells 200. The cooling mechanism includes a cooler, an inlet pipe, and an outlet pipe. The cooler includes a first fan 1411, a mounting frame 1412, and a cooling pipe 1413. The first fan 1411 and the mounting frame 1412 are located on the frame 111, and the cooling pipe 1413 is located on the mounting frame 1412. The cooling pipe 1413 has an inlet end and an outlet end for the cooling medium to enter and exit. The inlet pipe is connected to the inlet end, and the outlet pipe is connected to the outlet end. The first fan 1411 can generate airflow that flows through the cooling pipe 1413 and reaches the working area 1101. The temperature control mechanism includes a temperature monitor 151 and a flow regulator. The temperature monitor 151 is located on the frame 111 or the compartment 112 and can monitor the temperature of the working area 1101. The flow regulator is located on the inlet pipe or the outlet pipe.
[0041] It should be noted that the function of the inlet pipe is to introduce the cooling medium into the cooling pipe 1413, and the function of the outlet pipe is to lead out the cooling medium from the cooling pipe 1413, so that the cooling medium circulates in the cooling pipe 1413. On this basis, when the first fan 1411 generates airflow, the airflow flows through the cooling pipe 1413 and exchanges heat with the cooling medium (the cooling medium transfers cold energy to the airflow, and the airflow transfers heat to the cooling medium), so that the airflow has a lower temperature when it reaches the working area 1101, thereby achieving the effect of cooling and heat dissipation of the working area 1101.
[0042] For example, the cooling medium can be cooling water, cooling oil, liquid ammonia, Freon, etc., and no specific restrictions are placed on the type of cooling medium.
[0043] It is understood that in the battery capacity testing device provided in this embodiment, the cooling medium flows through the inlet and outlet pipes in the cooling pipe 1413. The first fan 1411 generates an airflow that flows through the cooling pipe 1413 and reaches the working area 1101. The cooling medium cools the airflow generated by the first fan 1411, thereby achieving air-cooled cooling of the working area 1101. At the same time, the temperature monitor 151 can monitor the temperature of the working area 1101. When the temperature of the working area 1101 is lower than the preset temperature, the flow rate of the cooling medium is reduced by the flow regulator to prevent the temperature of the working area 1101 from decreasing further. When the temperature of the working area 1101 is higher than the preset temperature, the flow rate of the cooling medium is increased by the flow regulator to further reduce the temperature of the working area 1101. This allows the temperature of the working area 1101 to be accurately controlled at the preset temperature, thereby reducing the impact of the temperature of the working area 1101 on the capacity testing and improving the accuracy of the battery capacity testing.
[0044] It should be noted that: the airflow generated by the first fan 1411 flowing through the cooling pipe 1413 refers to the heat exchange of the airflow generated by the first fan 1411 through the cooling pipe 1413. Typically, the airflow passes over the outer surface of the cooling pipe 1413, and the heat exchange between the cooling medium inside the cooling pipe 1413 and the airflow outside the cooling pipe 1413 is achieved through the outer wall of the cooling pipe 1413, thereby cooling the airflow generated by the first fan 1411. The cooled airflow then reaches the working area 1101 for further cooling.
[0045] like Figure 1 and Figure 3 As shown, in one embodiment, the flow regulator is an electronically controlled proportional valve, and the temperature control mechanism further includes a controller 153, which is electrically connected to the temperature monitor 151 and the electronically controlled proportional valve.
[0046] Understandably, when the temperature of the working area 1101 is lower than the preset temperature, the controller 153 automatically controls the opening degree of the electronically controlled proportional valve to decrease, thereby reducing the flow rate of the cooling medium; when the temperature of the working area 1101 is higher than the preset temperature, the controller 153 automatically controls the opening degree of the electronically controlled proportional valve to increase, thereby increasing the flow rate of the cooling medium, thus accurately controlling the temperature of the working area 1101 at the preset temperature.
[0047] Of course, for the above embodiments, the controller 153 may not be used for automated control. A manual valve can be selected as the flow regulator. By manually adjusting the opening and closing degree of the manual valve, the flow rate of the cooling medium can also be reduced or increased. No specific restrictions are placed on the type of flow regulator here.
[0048] like Figure 1 and Figure 2 As shown, in one embodiment, the battery capacity grading device has a first direction X, the mounting bracket 1412 is arranged in a ring, the cooling pipe 1413 is disposed in the mounting bracket 1412, the cooling pipe 1413 has a plurality of bends 14131, and a gap 14132 through the first direction X is formed between adjacent bends 14131 or between the cooling pipe 1413 and the mounting bracket 1412. The first fan 1411 is located on one side of the mounting bracket 1412 along the first direction X, and the working area 1101 is located on the other side of the mounting bracket 1412 along the first direction X. The first fan 1411 is capable of generating airflow that passes through the gap 14132 and reaches the working area 1101.
[0049] Understandably, the mounting bracket 1412 is arranged in a ring shape, serving two purposes: firstly, to mount at least a portion of the cooling pipes 1413, and secondly, to form a through-hole for airflow. After the cooling pipes 1413 are installed on the mounting bracket 1412, a portion of the through-hole forms a gap 14132 between adjacent bends 14131 on the cooling pipes 1413. When the airflow generated by the first fan 1411 flows through the gap 14132, the airflow exchanges heat with the cooling medium circulating within the bends 14131, resulting in a lower temperature when the airflow reaches the working area 1101 through the through-hole, thus achieving a cooling effect. Simultaneously, the serpentine shape of the cooling pipes 1413 formed by the multiple bends 14131 increases the flow path of the cooling medium, allowing for more thorough heat exchange between the airflow and the cooling medium.
[0050] It is understood that in the above embodiment, the cooling pipe 1413 is equivalent to a serpentine pipe, the bend 14131 is equivalent to a section with a horizontal section and a corner section, and multiple bends are connected together to form an integral serpentine pipe. The gap 14132 is formed by the horizontal sections of adjacent bends 14131, which will not be described in detail here.
[0051] like Figure 1 and Figure 3 As shown, in one embodiment, the battery capacity grading device has a first direction X. The frame 111 is provided with coolers on both sides along the first direction X. The liquid inlet pipe includes a main liquid inlet pipe and a plurality of liquid inlet branch pipes 1421. The number of liquid inlet branch pipes 1421 corresponds one-to-one with the number of coolers. One end of each liquid inlet branch pipe 1421 is connected to the main liquid inlet pipe, and the other end of each liquid inlet branch pipe 1421 is connected to the liquid inlet end of a cooler. The liquid outlet pipe includes a main liquid outlet pipe and a plurality of liquid outlet branch pipes 1431. The number of liquid outlet branch pipes 1431 corresponds one-to-one with the number of coolers. One end of each liquid outlet branch pipe 1431 is connected to the main liquid outlet pipe, and the other end of each liquid outlet branch pipe 1431 is connected to the liquid outlet end of a cooler. A flow regulator is provided on the main liquid inlet pipe or the main liquid outlet pipe.
[0052] The cooling medium circulation process is understood to be as follows: the cooling medium flows from the main inlet pipe into multiple inlet branch pipes 1421, the cooling medium in each inlet branch pipe 1421 flows into the cooling pipe 1413 of a corresponding cooler, and the cooling medium in each cooling pipe 1413 of a corresponding cooler flows out from an outlet branch pipe 1431. The cooling medium in the multiple outlet branch pipes 1431 merges into the main outlet pipe, thus realizing the circulation of the cooling medium in multiple coolers. By setting the flow regulator on the main inlet pipe or the main outlet pipe, the flow rate of the cooling medium in multiple coolers can be controlled simultaneously. Since coolers are provided on both sides of the frame 111 along the first direction X, airflow reaches the working area 1101 on both sides of the frame 111 along the first direction X. This can more efficiently control the temperature of the working area 1101 at the preset temperature and also improve heat dissipation efficiency.
[0053] It should be noted that in this embodiment, along the first direction X, coolers are provided on both sides of the working area 1101. The first fans 1411 of the coolers on both sides of the working area 1101 blow air in opposite directions, but both blow air toward the working area 1101. This will not be described in detail again.
[0054] In one embodiment, the battery capacity grading device further includes an exhaust mechanism located on the frame 111, which can exhaust the airflow in the working area 1101 to achieve airflow circulation between the working area 1101 and the external environment, thereby more efficiently controlling the temperature of the working area 1101 at a preset temperature and also improving the efficiency of air-cooled heat dissipation.
[0055] like Figure 1 and Figure 3As shown, the battery capacity grading device further includes a second direction Y, and the capacity grading mechanism also includes a side plate 114, which is disposed on one side of the frame 111 along the second direction Y. The exhaust mechanism includes a plurality of second fans 161, which are disposed on the side plate 114. The second fans 161 are capable of exhausting airflow within the working area 1101. It can be understood that by arranging multiple second fans 161, the airflow can circulate more efficiently between the working area 1101 and the external environment.
[0056] Of course, in the above embodiments, the exhaust mechanism may also include a second fan 161. Using a second fan 161, the airflow in the working area 1101 can also be exhausted. In addition, the exhaust mechanism may also include a second fan 161 and an exhaust pipe. The exhaust pipe is connected between the side plate 114 and the second fan 161, which can also exhaust the airflow in the working area 1101. No specific restrictions are placed on the structure of the exhaust mechanism here.
[0057] like Figure 1 and Figure 3 As shown, in one embodiment, the frame 111 includes a top plate 1111, a bottom plate 1112, and at least three supports 1113. Each support 1113 is connected between the top plate 1111 and the bottom plate 1112. The compartment 112 is disposed on the bottom plate 1112, the mounting bracket 1412 is disposed on the support 1113, and the temperature monitor 151 is disposed on the top plate 1111 or the support 1113. It is understood that the arrangement of the top plate 1111 and the support 1113 facilitates the installation of the temperature monitor 151 and the cooler, and the arrangement of the bottom plate 1112 facilitates the placement of the compartment 112.
[0058] like Figure 1 and Figure 3 As shown, the battery capacity grading device further has a first direction X and a third direction Z that are perpendicular to each other. The top plate 1111 and the bottom plate 1112 are arranged opposite each other in the third direction Z. The cooler and the capacity grading compartment 112 are spaced apart in the first direction X. The capacity grading compartment 112 has a compartment opening 1121 facing the top plate 1111. At least a portion of the cooler is located between the top plate 1111 and the compartment opening 1121 in the third direction Z.
[0059] Understandably, since at least part of the cooler is located between the top plate 1111 and the opening 1121 in the third direction Z, at least part of the airflow generated by the cooler can pass between the opening 1121 and the top plate 1111 (when the third direction Z is vertical, it can be understood that the airflow passes above the opening 1121), which improves the situation where the airflow is blocked by the side wall of the compartment 112, thereby better heat dissipation of the working area 1101 and more accurately controlling the temperature of the working area 1101 at the preset temperature.
[0060] Furthermore, the battery capacity grading device has a third direction Z, with the top plate 1111 and the bottom plate 1112 arranged opposite to each other in the third direction Z. Multiple temperature monitors 151 are provided, and the multiple temperature monitors 151 are located on the top plate 1111. When projected on a plane perpendicular to the third direction Z, the projection areas of the multiple temperature monitors 151 are distributed circumferentially along the projection area of the capacity grading compartment 112.
[0061] It is understandable that since multiple temperature monitors 151 are installed on the top plate 1111, and when projected onto a plane perpendicular to the third direction Z, the projections of the multiple temperature monitors 151 are distributed circumferentially along the projection of the compartment 112. In other words, the projections of the multiple temperature monitors 151 on the plane perpendicular to the third direction Z are distributed circumferentially along the projection of the compartment 112 on the aforementioned plane. In other words, the multiple temperature monitors 151 are arranged around the compartment 112. This allows for monitoring of the temperature at different locations within the working area 1101, resulting in higher monitoring accuracy and making it easier to more precisely control the temperature of the working area 1101 at the preset temperature.
[0062] like Figure 1 and Figure 3 As shown, in one embodiment, the rack 111 is provided with a positioning seat 113, which is located in the working area 1101 and cooperates with the capacity dispensing compartment 112 to limit the position of the capacity dispensing compartment 112, thereby increasing the stability of the capacity dispensing compartment 112 and improving the accuracy of capacity dispensing detection.
[0063] For example, the positioning seat 113 includes a plurality of L-shaped members, each L-shaped member being supported on the edge of the compartment 112, thereby limiting the position of the compartment 112.
[0064] Of course, the positioning seat 113 can also be a positioning plate with a groove. The dispensing compartment 112 is placed in the groove, and the groove wall can also limit the position of the dispensing compartment 112. Here, no specific restrictions are made on the structure of the positioning seat 113.
[0065] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0066] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.
Claims
1. A battery capacity testing device, characterized in that, include: The capacity distribution mechanism includes a frame (111) and a capacity distribution compartment (112). The frame (111) has a working area (1101). The capacity distribution compartment (112) is located on the frame (111) and in the working area (1101). The capacity distribution compartment (112) can accommodate multiple battery cells (200). The cooling mechanism includes a cooler, an inlet pipe, and an outlet pipe. The cooler includes a first fan (1411), a mounting bracket (1412), and a cooling pipe (1413). The first fan (1411) and the mounting bracket (1412) are mounted on the frame (111). The cooling pipe (1413) is mounted on the mounting bracket (1412). The cooling pipe (1413) has an inlet end and an outlet end for the cooling medium to enter and exit. The inlet pipe is connected to the inlet end, and the outlet pipe is connected to the outlet end. The first fan (1411) can generate an airflow that flows through the cooling pipe (1413) and reaches the working area (1101). The temperature control mechanism includes a temperature monitor (151) and a flow regulator. The temperature monitor (151) is located on the frame (111) or the compartment (112) and is capable of monitoring the temperature of the working area (1101). The flow regulator is located on the inlet pipe or the outlet pipe.
2. The battery capacity grading device according to claim 1, characterized in that, The flow regulator is an electronically controlled proportional valve, and the temperature control mechanism also includes a controller (153), which is electrically connected to the temperature monitor (151) and the electronically controlled proportional valve.
3. The battery capacity grading device according to claim 1, characterized in that, The battery capacity grading device has a first direction (X), the mounting bracket (1412) is arranged in a ring, the cooling pipe (1413) is disposed in the mounting bracket (1412), the cooling pipe (1413) has a plurality of bends (14131), and a gap (14132) is formed between adjacent bends (14131) or between the cooling pipe (1413) and the mounting bracket (1412) through the first direction (X), the first fan (1411) is located on one side of the mounting bracket (1412) along the first direction (X), and the working area (1101) is located on the other side of the mounting bracket (1412) along the first direction (X), and the first fan (1411) can generate airflow that passes through the gap (14132) and reaches the working area (1101).
4. The battery capacity grading device according to claim 1, characterized in that, The battery capacity grading device has a first direction (X). The frame (111) is provided with coolers on both sides of the first direction (X). The liquid inlet pipe includes a main liquid inlet pipe and a plurality of liquid inlet branch pipes (1421). The number of liquid inlet branch pipes (1421) corresponds one-to-one with the number of coolers. One end of each liquid inlet branch pipe (1421) is connected to the main liquid inlet pipe, and the other end of each liquid inlet branch pipe (1421) is connected to the liquid inlet end of one of the coolers. The liquid outlet pipe includes a main liquid outlet pipe and a plurality of liquid outlet branch pipes (1431). The number of liquid outlet branch pipes (1431) corresponds one-to-one with the number of coolers. One end of each liquid outlet branch pipe (1431) is connected to the main liquid outlet pipe, and the other end of each liquid outlet branch pipe (1431) is connected to the liquid outlet end of one of the coolers. The flow regulator is located on the main liquid inlet pipe or the main liquid outlet pipe.
5. The battery capacity grading device according to claim 1, characterized in that, The battery capacity grading device also includes an exhaust mechanism, which is located on the frame (111) and is capable of exhausting the airflow in the working area (1101).
6. The battery capacity grading device according to claim 5, characterized in that, The battery capacity grading device has a second direction (Y), and the capacity grading mechanism also includes a side plate (114). The side plate (114) is disposed on one side of the frame (111) along the second direction (Y). The ventilation mechanism includes a plurality of second fans (161). The plurality of second fans (161) are disposed on the side plate (114). The second fans (161) are capable of discharging airflow in the working area (1101).
7. The battery capacity grading device according to claim 1, characterized in that, The frame (111) includes a top plate (1111), a bottom plate (1112), and at least three supports (1113). Each support (1113) is connected between the top plate (1111) and the bottom plate (1112). The compartment (112) is located on the bottom plate (1112). The mounting bracket (1412) is located on the support (1113). The temperature monitor (151) is located on the top plate (1111) or the support (1113).
8. The battery capacity testing device according to claim 7, characterized in that, The battery capacity grading device has a first direction (X) and a third direction (Z) that are perpendicular to each other. The top plate (1111) and the bottom plate (1112) are arranged opposite to each other in the third direction (Z). The cooler and the capacity grading compartment (112) are spaced apart in the first direction (X). The capacity grading compartment (112) has a compartment opening (1121) facing the top plate (1111). At least a portion of the cooler is located between the top plate (1111) and the compartment opening (1121) in the third direction (Z).
9. The battery capacity grading device according to claim 7, characterized in that, The battery capacity grading device has a third direction (Z), the top plate (1111) and the bottom plate (1112) are arranged opposite to each other on the third direction (Z), and multiple temperature monitors (151) are provided. The multiple temperature monitors (151) are located on the top plate (1111), and when projected on a plane perpendicular to the third direction (Z), the projection areas of the multiple temperature monitors (151) are distributed circumferentially along the projection area of the capacity grading compartment (112).
10. The battery capacity grading device according to claim 1, characterized in that, The frame (111) is provided with a positioning seat (113), which is located in the working area (1101) and is in a limiting cooperation with the compartment (112).