Battery cell self-discharge detection device

Abstract

The utility model belongs to the field of energy storage, and particularly relates to a battery cell self-discharge detection device, which comprises a frame body, a detection mechanism, a tray clamp and a self-discharge detection meter, the detection mechanism is arranged on the frame body and is suitable for ascending and descending in the height direction of the frame body; the bottom of the frame body is provided with a detection groove suitable for insertion of a tray clamp. And the detection mechanism is electrically connected with the self-discharge detection meter. The battery cell is positioned by arranging the tray clamp, the detection mechanism is electrically connected with the pole of the battery cell, voltage and current signals generated by self-discharge of the battery cell are led out and transmitted to the self-discharge detection meter, and self-discharge data of the battery cell within preset time are detected, so that the performance of the battery cell is distinguished, and the detection efficiency is improved; and the battery cell storage cost and the plant construction cost are reduced.

Description

Technical Field

[0001] The utility model relates to the field of energy storage, in particular to a battery self-discharge detection device. Background Art

[0002] Under the situation of global energy shortage, the new energy industry represented by lithium battery is booming, and the detection of battery self-discharge is an important basis for distinguishing battery performance.

[0003] The current self-discharge detection mechanism on the market is to leave the battery cells at room temperature for 10-15 days. After a long period of static storage, the voltage drop of inferior batteries will be much higher than that of normal batteries. Long-term static storage requires a large number of static shelves, as well as stackers and intelligent storage systems. Not only is the detection efficiency low, but it also occupies a large area, greatly increasing the cost of factory construction.

[0004] The above problems need to be solved urgently. Utility Model Content

[0005] The utility model aims to provide a battery self-discharge detection device.

[0006] In order to solve the above technical problems, the utility model provides a battery self-discharge detection device, comprising:

[0007] Frame body, detection mechanism, tray fixture and self-discharge detection table;

[0008] The detection mechanism is arranged on the frame body and is suitable for lifting and lowering along the height direction of the frame body;

[0009] The bottom of the frame body is provided with a detection slot suitable for inserting a tray clamp;

[0010] The detection mechanism is electrically connected to the self-discharge detection meter.

[0011] Furthermore, the detection mechanism is adapted to fit and electrically connect with the poles of the battery cells on the tray fixture when descending;

[0012] The self-discharge detection meter is suitable for collecting the voltage and current of the battery cell.

[0013] Further, the detection mechanism includes: a lifting assembly, a detection member and at least one set of probes;

[0014] The lifting assembly is fixedly arranged on the frame body;

[0015] The detection member is fixedly arranged on the lifting assembly;

[0016] The lifting assembly is suitable for driving the detection member to be lifted and lowered along the height direction of the frame body;

[0017] At least one group of the probes is fixedly arranged on the opposite surfaces of the detection member and the tray fixture.

[0018] Furthermore, when the probes are in two or more groups;

[0019] Two or more groups of probes are arranged side by side on the detection member and are adapted to the pole positions of the battery cells on the tray fixture.

[0020] Furthermore, the probe is elastically connected to the detection board via a return spring.

[0021] Furthermore, the detection member includes a lifting frame and at least one detection plate;

[0022] The detection plate is fixedly arranged on the lifting frame and is arranged opposite to the detection slot of the frame body.

[0023] Further, the lifting assembly includes a cylinder, a cylindrical shaft and a linear bearing;

[0024] The linear bearing is sleeved on the cylindrical shaft;

[0025] The cylindrical shaft is fixedly arranged on the frame body;

[0026] The cylinder is suitable for driving the linear bearing to move up and down along the cylindrical axis.

[0027] Furthermore, the detection mechanism also includes a temperature probe;

[0028] The temperature probe is fixedly arranged on the detection member.

[0029] Furthermore, a positioning bracket is provided on the tray fixture.

[0030] Furthermore, the battery cell self-discharge detection device also includes a box;

[0031] The frame body, the detection mechanism, the tray fixture and the self-discharge detection meter are all arranged in the box body.

[0032] The beneficial effect of the utility model is that the utility model provides a battery cell self-discharge detection device, which positions the battery cell by arranging a tray clamp and electrically connects the detection mechanism to the pole of the battery cell, draws out the voltage and current signals generated by the self-discharge of the battery cell, and transmits them to a self-discharge detection meter, detects the data of the battery cell self-discharge within a preset time, thereby distinguishing the performance of the battery cell, improving the detection efficiency, and reducing the battery cell storage cost and factory construction cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0034] Figure 1 It is a partial structural schematic diagram of a battery cell self-discharge detection device provided in an embodiment of the utility model.

[0035] Figure 2 It is an axonometric diagram of the main structure of the battery cell self-discharge detection device provided by the embodiment of the utility model.

[0036] Figure 3 It is a partial structural schematic diagram of the detection member provided in the embodiment of the utility model.

[0037] Figure 4 It is a schematic diagram of the structure of the detection board and the probe provided in the embodiment of the utility model.

[0038] Figure 5 It is a structural schematic diagram of a battery self-discharge detection device with a box body provided in an embodiment of the utility model.

[0039] In the figure: 100, frame body; 200, detection mechanism; 210, lifting assembly; 211, cylinder; 212, cylindrical shaft; 213, linear bearing; 220, detection member; 221, lifting frame; 222, detection plate; 230, probe; 231, reset spring; 240, temperature probe; 300, tray fixture; 400, self-discharge detection meter; 500, box; 510, observation window. DETAILED DESCRIPTION

[0040] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0041] For examples, see Figure 1-Figure 2 At least one embodiment provides a self-discharge detection device for a battery cell, comprising: a frame body 100, a detection mechanism 200, a tray fixture 300, and a self-discharge detection meter 400; the detection mechanism 200 is arranged on the frame body 100, and is suitable for lifting and lowering along the height direction of the frame body 100; a detection slot suitable for inserting the tray fixture 300 is provided at the bottom of the frame body 100; the detection mechanism 200 is electrically connected to the self-discharge detection meter 400. The battery cell is positioned by setting the tray fixture 300, and the detection mechanism 200 is electrically connected to the pole of the battery cell, the voltage and current signals generated by the self-discharge of the battery cell are drawn out and transmitted to the self-discharge detection meter 400, and the data of the self-discharge of the battery cell within a preset time is detected, thereby distinguishing the performance of the battery cell, improving the detection efficiency, and reducing the storage cost of the battery cell and the cost of plant construction.

[0042] In at least one embodiment, the preset time is between 1-2 hours, which greatly improves the detection efficiency of battery cell self-discharge compared to 10-15 days of standing at room temperature in the prior art.

[0043] It should be noted that the detection mechanism 200 is suitable for being in contact with the poles of the battery cells on the tray fixture 300 when it is lowered, and being electrically connected; the self-discharge detection meter 400 is suitable for collecting the voltage and current of the battery cells. The battery cells are placed in the tray fixture 300 to fix the positions of the battery cells, and then the tray fixture 300 is inserted into the detection slot. When it is necessary to detect the self-discharge of the battery cells, the detection mechanism 200 is lowered to be electrically connected to the poles of the battery cells, and the self-discharge current and voltage of the battery cells are drawn out and then transmitted to the self-discharge detection meter 400 for detection.

[0044] In order to realize batch detection of battery cells, in some embodiments, the number of the detection slots and the tray fixture 300 is N, and N≥2. The specific value of N is set according to actual needs, thereby improving the detection efficiency of battery cell self-discharge.

[0045] See also Figure 3-Figure 4 , the structure of the detection mechanism 200 is described below, the detection mechanism 200 includes: a lifting assembly 210, a detection member 220 and at least one group of probes 230; the lifting assembly 210 is fixedly arranged on the frame body 100; the detection member 220 is fixedly arranged on the lifting assembly 210; the lifting assembly 210 is suitable for driving the detection member 220 to be lifted and lowered along the height direction of the frame body 100; at least one group of probes 230 is fixedly arranged on the opposite surface of the detection member 220 and the tray clamp 300.

[0046] In order to improve the self-discharge detection efficiency of the battery cells, in some embodiments, two or more battery cell installation positions are set on a tray fixture 300. At this time, the probes 230 are two or more groups; two or more groups of probes 230 are arranged side by side on the detection member 220 and are adapted to the pole positions of the battery cells on the tray fixture 300.

[0047] In order to accurately position the battery cell on the tray fixture 300 , in some embodiments, a positioning bracket is provided on the tray fixture 300 . By providing the positioning bracket, the placement position of the battery cell is limited to ensure the accuracy of the position of the battery cell on the tray fixture 300 .

[0048] In order to improve the stability of the connection between the probe 230 and the pole, in some embodiments, the probe 230 is elastically connected to the detection plate 222 through a return spring 231. The elastic connection increases the pressure between the probe 230 and the battery pole, ensures the stability of the electrical connection, and improves the accuracy of self-discharge detection.

[0049] See also Figure 3 The structure of the detection member 220 is described below. In at least one embodiment, the detection member 220 includes a lifting frame 221 and at least one detection plate 222; the detection plate 222 is fixedly arranged on the lifting frame 221 and arranged opposite to the detection slot of the frame body 100. The position of the detection plate 222 is limited by setting the lifting frame 221 to ensure that the detection plate 222 does not shake during the lifting process.

[0050] Please continue reading Figure 1-Figure 2 In some embodiments, the lifting assembly 210 includes a cylinder 211, a cylindrical shaft 212, and a linear bearing 213; the linear bearing 213 is sleeved on the cylindrical shaft 212; the cylindrical shaft 212 is fixedly arranged on the frame body 100; the cylinder 211 is suitable for driving the linear bearing 213 to move up and down along the cylindrical shaft 212. In other embodiments, the lifting assembly 210 can use a stepping motor to achieve lifting.

[0051] like Figure 4 As shown, in order to ensure the safety of the battery cell during the self-discharge process, in some embodiments, the detection mechanism 200 further includes a temperature probe 240 ; the temperature probe 240 is fixedly disposed on the detection member 220 .

[0052] See also Figure 5 In some embodiments, the battery cell self-discharge detection device further includes a box body 500 ; the frame body 100 , the detection mechanism 200 , the tray fixture 300 and the self-discharge detection meter 400 are all arranged in the box body 500 .

[0053] It should be noted that, in order to facilitate observation of the self-discharge process of the battery cell, an observation window 510 is provided on the box body 500 .

[0054] In summary, the utility model provides a self-discharge detection device for a battery cell, comprising: a frame body 100, a detection mechanism 200, a tray fixture 300, and a self-discharge detection meter 400; the detection mechanism 200 is arranged on the frame body 100, and is suitable for lifting and lowering along the height direction of the frame body 100; the bottom of the frame body 100 is provided with a detection slot suitable for inserting the tray fixture 300; the detection mechanism 200 is electrically connected to the self-discharge detection meter 400. The battery cell is positioned by setting the tray fixture 300, and the detection mechanism 200 is electrically connected to the pole of the battery cell, the voltage and current signals generated by the self-discharge of the battery cell are drawn out, and transmitted to the self-discharge detection meter 400, and the data of the self-discharge of the battery cell within a preset time is detected, so as to distinguish the performance of the battery cell, improve the detection efficiency, and reduce the storage cost of the battery cell and the construction cost of the factory building.

[0055] All devices (parts without specific structure) selected in this application are universal standard parts or parts known to those skilled in the art, and their structures and principles can be known by those skilled in the art through technical manuals or conventional experimental methods. In addition, the software programs involved in this application are all prior art, and this application does not involve any improvement to the software programs.

[0056] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0058] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0059] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0060] In addition, each functional unit in each embodiment of the present utility model may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0061] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A battery self-discharge detection device, characterized in that: include: Frame body, detection mechanism, tray fixture and self-discharge detection table; The detection mechanism is arranged on the frame body and is suitable for lifting and lowering along the height direction of the frame body; The bottom of the frame body is provided with a detection slot suitable for inserting a tray clamp; The detection mechanism is electrically connected to the self-discharge detection meter.

2. The battery self-discharge detection device according to claim 1, characterized in that: The detection mechanism is adapted to be in contact with the poles of the battery cells on the tray fixture and be electrically connected when descending; The self-discharge detection meter is suitable for collecting the voltage and current of the battery cell.

3. The battery cell self-discharge detection device according to claim 1, characterized in that: The detection mechanism comprises: a lifting assembly, a detection member and at least one set of probes; The lifting assembly is fixedly arranged on the frame body; The detection member is fixedly arranged on the lifting assembly; The lifting assembly is suitable for driving the detection member to be lifted and lowered along the height direction of the frame body; At least one group of the probes is fixedly arranged on the opposite surfaces of the detection member and the tray fixture.

4. The battery cell self-discharge detection device according to claim 3, characterized in that: When there are two or more probes; Two or more groups of probes are arranged side by side on the detection member and are adapted to the pole positions of the battery cells on the tray fixture.

5. The battery self-discharge detection device according to claim 3, characterized in that: The probe is elastically connected to the detection member via a return spring.

6. The battery self-discharge detection device according to claim 3, characterized in that: The detection member includes a lifting frame and at least one detection plate; The detection plate is fixedly arranged on the lifting frame and is arranged opposite to the detection slot of the frame body.

7. The battery self-discharge detection device according to claim 3, characterized in that: The lifting assembly includes a cylinder, a cylindrical shaft and a linear bearing; The linear bearing is sleeved on the cylindrical shaft; The cylindrical shaft is fixedly arranged on the frame body; The cylinder is suitable for driving the linear bearing to move up and down along the cylindrical axis.

8. The battery cell self-discharge detection device according to claim 3, characterized in that: The detection mechanism also includes a temperature probe; The temperature probe is fixedly arranged on the detection member.

9. The battery cell self-discharge detection device according to claim 1, characterized in that: The tray fixture is provided with a positioning bracket.

10. The battery cell self-discharge detection device according to claim 1, characterized in that: The battery cell self-discharge detection device also includes a box; The frame body, the detection mechanism, the tray fixture and the self-discharge detection meter are all arranged in the box body.

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