A probe layer and pressure restraint device

Abstract

This utility model belongs to the field of battery manufacturing technology and discloses a probe layer plate and a pressure restraint device. The probe layer plate includes a support plate, two charging plates, and two tab clamping plates. A support member is provided on the first side of the support plate to support the battery cell. The two charging plates are movably disposed on the first side at a distance along a first direction. Each charging plate has at least two conductive areas of opposite polarity that are spaced apart along a second direction. The two tab clamping plates are spaced apart on the second side of the support plate along the first direction. When multiple probe layers plate are arranged sequentially along a third direction, the tab clamping plate of one probe layer plate can press the tab of the battery cell onto the charging plate of another probe layer plate in two adjacent probe layers plate. This probe layer plate can simultaneously clamp battery cells with tabs on the same side and those with tabs on opposite sides, and is compatible with battery cells with large differences in length, thus having a wide range of applications.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, and in particular to a probe layer plate and a pressure restraint device. Background Technology

[0002] In existing technologies, when heating and pressurizing solid-state battery cells for formation, the cells need to be mounted on a probe plate before pressurization. Existing probe plates are only suitable for cells with tabs on the same side or opposite sides, and cannot simultaneously clamp cells with tabs on the same side and opposite sides. Furthermore, existing probe plates are not well compatible with cells with significant differences in length. Utility Model Content

[0003] The purpose of this invention is to provide a probe plate that can simultaneously hold battery cells with tabs on the same side and those with tabs on opposite sides, and is compatible with battery cells with large differences in length and size, thus having a wide range of applications.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A probe layer includes: a support plate, a support member on a first side of the support plate for supporting a battery cell; two charging plates, the two charging plates being movably disposed at a distance along a first direction on the first side, each charging plate having at least two conductive areas spaced apart along a second direction and having opposite polarities; and two tab clamping plates, the two tab clamping plates being spaced apart along the first direction on a second side of the support plate, wherein: when multiple probe layers are arranged sequentially along a third direction, in two adjacent probe layers, the tab clamping plate of one probe layer can press the tab of the battery cell against the charging plate of the other probe layer.

[0006] The purpose of this utility model is also to provide a pressure restraint device that can simultaneously clamp battery cells with the same-side output tab and battery cells with the opposite-side output tab, and is compatible with battery cells with large differences in length and size, thus having a wide range of applications.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] A pressure restraint device includes a fixed end, a driving member, a movable end, and a plurality of probe plates as described above. The plurality of probe plates are arranged sequentially along a third direction. The movable end abuts against one of the probe plates. The driving member is mounted on the fixed end and connected to the movable end. When the driving member drives the movable end to move, the plurality of probe plates can squeeze against each other to apply pressure toward the battery cell mounted on the probe plates.

[0009] The beneficial effects of this utility model are as follows: In actual operation, after the battery cell is installed onto the support member on the support plate, in two adjacent probe layers, the tab clamping plate of one probe layer can press the battery cell's tab against the charging plate of the other probe layer. Since the charging plate has conductive areas with opposite polarities, if the battery cell has a structure with tabs on the same side, both the positive and negative tabs are pressed against the two conductive areas of the same charging plate by a tab clamping plate. If the battery cell has tabs on both sides, the positive and negative tabs are pressed against the conductive areas of two different charging plates by two tab clamping plates respectively. The probe layer of this embodiment can hold both battery cells with tabs on the same side and battery cells with tabs on opposite sides. Simultaneously, since the two charging plates are movably arranged at a distance along the first direction on the first side, the distance between the two charging plates can be adjusted during actual operation, thereby accommodating battery cells with significant differences in length. In addition, when the probe layer supports cells with the same-side output tabs, since two conductive areas are respectively set on the two charging boards, the probe layer can support two cells at the same time, which improves the testing efficiency.

[0010] 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

[0011] Figure 1 This is a schematic diagram of the probe layer plate according to an embodiment of the present invention;

[0012] Figure 2 This is a schematic diagram of the probe layer plate supporting the battery cells on both sides according to an embodiment of the present invention;

[0013] Figure 3 This is a schematic diagram of the probe layer plate supporting the same-side output tab battery cell according to an embodiment of the present invention;

[0014] Figure 4 This is a schematic diagram of the probe layer plate from another direction according to an embodiment of the present invention;

[0015] Figure 5 This is a partial structural diagram of the probe layer plate according to an embodiment of the present invention;

[0016] Figure 6 This is another partial structural diagram of the probe layer plate according to an embodiment of the present invention;

[0017] Figure 7 This is a partial cross-sectional view of the probe layer plate according to an embodiment of the present invention;

[0018] Figure 8 This is a structural schematic diagram of the pressure restraint device according to an embodiment of the present invention.

[0019] Figure label:

[0020] 100. Probe layer plate; 110. Support plate; 111. Support component; 112. First slide rail; 120. Charging plate; 121. Conductive area; 130. Electrode pressure plate; 131. Adjustment part; 1311. Adjustment elongated hole; 132. Positioning part; 1321. Positioning elongated hole; 140. First sliding member; 141. Adjustment hole; 150. Second sliding member; 151. Positioning hole; 152. Second slider; 160. Fixing component; 161. First bolt; 162. First elastic member; 163. Second bolt; 170. Pad; 180. Second elastic member; 190. Third sliding member; 191. First slider; 192. Second slide rail; 1100. Positioning component; 1200. Adjustment component;

[0021] 200, Fixed end; 300, Driving component; 400, Moving end;

[0022] 10. Battery cell; 101. Electrode tab. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0024] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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 utility model based on the specific circumstances.

[0025] In the description of this embodiment, the terms "upper," "lower," "left," "right," "front," and "rear," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0026] refer to Figure 1 and Figure 4As shown, this utility model discloses a probe layer plate 100, which includes a support plate 110, two charging plates 120 and two tab pressure plates 130. The support plate 110 has a support member 111 on its first side, which supports the battery cell 10. The two charging plates 120 are movably disposed on the first side at a distance along a first direction. Each charging plate 120 has at least two conductive areas 121 that are spaced apart along a second direction and have opposite polarities. The two tab pressure plates 130 are spaced apart along the first direction on the second side of the support plate 110. When multiple probe layer plates 100 are arranged sequentially along a third direction, the tab pressure plate 130 of one probe layer plate 100 can press the tab 101 of the battery cell 10 onto the charging plate 120 of the other probe layer plate 100.

[0027] Understandably, in actual operation, after the battery cell 10 is installed onto the support member 111 on the support plate 110, in two adjacent probe plates 100, the tab plate 130 of one probe plate 100 can press the tab 101 of the battery cell 10 onto the charging plate 120 of the other probe plate 100. Since the charging plate 120 has conductive areas 121 with opposite polarities, if the battery cell 10 has a structure with tabs 101 on both sides, the positive and negative tabs of the battery cell 10 are pressed by the two tab plates 130 onto the conductive areas 121 of the two charging plates 120 respectively. Figure 2 As shown), if the battery cell 10 has a structure with tabs 101 on the same side, then both the positive and negative tabs of the battery cell 10 are pressed by a tab clamping plate 130 onto the two conductive areas 121 of the same charging plate 120. Figure 3 As shown, the probe plate 100 in this embodiment can hold both cells with tabs on the same side and cells with tabs on opposite sides. Meanwhile, since the two charging plates 120 are movably disposed on the first side at a distance along the first direction, the distance between the two charging plates 120 can be adjusted during actual operation, thereby accommodating cells 10 with significant differences in length. Furthermore, when the probe plate 100 supports a cell 10 with tabs 101 on the same side, since each of the two charging plates 120 has two conductive areas 121, the probe plate 100 can simultaneously support two cells 10, improving testing efficiency.

[0028] Optionally, the distance between two conductive areas 121 on the same charging board 120 is at least 30mm. It is understood that a small distance between the two conductive areas 121 may increase the probability of short-circuiting the tabs 101 of the battery cell 10. In this embodiment, setting the distance between the two conductive areas 121 on the same charging board 120 to at least 30mm reduces the probability of short-circuiting the tabs 101 of the battery cell 10, thereby reducing the probability of damage to the battery cell 10 during testing. Further optionally, the distance between the two conductive areas 121 on a charging board 120 can be 30mm, 35mm, 40mm, 45mm, or 50mm. Of course, other values ​​greater than 30mm are also possible, and the specific value can be set according to actual needs.

[0029] It should be noted that if the charging plate 120 is directly adjustable relative to the support plate 110, adjusting the charging plate 120 during the manufacturing process is inconvenient and prone to problems. In order to accommodate the battery cells 10 with large differences in length, the probe layer plate 100 of this embodiment also includes a first sliding member 140 and a second sliding member 150. The first sliding member 140 and the second sliding member 150 are slidably mounted on both sides of the support plate 110 along the second direction. The two ends of the charging plate 120 along the second direction are fixedly connected to the first sliding member 140 and the second sliding member 150, respectively. The two ends of the electrode pressure plate 130 along the second direction are connected to the first sliding member 140 and the second sliding member 150, respectively. Understandably, in actual operation, when multiple probe plates 100 are arranged sequentially along a third direction, a linkage structure can be used to connect the first sliding member 140 (or the second sliding member 150) of the multiple probe plates 100 together. When a battery cell 10 with a large difference in length is replaced, the external drive structure drives the multiple first sliding members 140 (or the second sliding member 150) to move through the linkage structure, which can realize the adjustment of the spacing between the two charging plates 120 and the two electrode pressure plates 130, which is convenient for adjustment and can also be compatible with battery cells 10 with large differences in length.

[0030] Further optional, see reference Figure 1 As shown, the two ends of the charging plate 120 along the second direction are connected to the first sliding member 140 and the second sliding member 150 respectively via fixing members 160. It can be understood that by connecting the charging plate 120 to the first sliding member 140 and the second sliding member 150 through the fixing members 160, the charging plate 120 can be fixed simply and conveniently, improving the assembly efficiency of the probe layer plate 100.

[0031] Further options are available, see reference. Figure 7As shown, the fixing member 160 includes a first bolt 161, a first elastic member 162, and a second bolt 163. The stud portion of the second bolt 163 is provided with a threaded hole. The first bolt 161 passes through the charging plate 120 and is threadedly connected to the second bolt 163. The stud portion of the second bolt 163 abuts against the head of the first bolt 161. The first elastic member 162 is sleeved on the second bolt 163. It is understood that, since the fastener 160 in this embodiment includes a first bolt 161, a first elastic member 162, and a second bolt 163, during the assembly process, the first elastic member 162 is first fitted onto the second bolt 163, and then the second bolt 163 and the first elastic member 162 are installed into the positioning hole 151 on the first sliding member 140 or the second sliding member 150. Then, the first bolt 161 passes through the charging plate 120 and is threadedly engaged with the second bolt 163. During the rotation of the first bolt 161, the charging plate 120 can be pressed tightly onto the support plate 110. Compared with a single screw or pin, this combination of fasteners 160 has higher reliability and better stability, ensuring that the charging plate 120 can be stably fixed on the support plate 110, thereby improving the pressing ability on the tab 101 of the battery cell 10.

[0032] Further optional, see reference Figure 4 As shown, the probe layer 100 also includes a pad 170. Both ends of the pad 170 are connected to the first sliding member 140 and the second sliding member 150, respectively. The tab pressure plate 130 is connected to the pad 170 via a second elastic member 180. It is understood that the thickness of the battery cell 10 may change during actual testing. By setting the pad 170 and the second elastic member 180 between the pad 170 and the tab pressure plate 130, the second elastic member 180 is compressed during the pressing of the tab 101. This improves the pressing ability of the tab 101 of the battery cell 10 and allows the probe layer 100 of this embodiment to be applicable to battery cells 10 of different thicknesses.

[0033] Further options are available, see reference. Figure 5 and Figure 6As shown, the first sliding member 140 is provided with adjustment holes 141 spaced apart along the third direction, the second sliding member 150 is provided with positioning holes 151, and the pole tab pressure plate 130 is provided with adjustment part 131 and positioning part 132 at both ends along the second direction, respectively. The adjustment part 131 is provided with adjustment elongated hole 1311 corresponding to the adjustment hole 141, and is connected to the first sliding member 140 through adjustment member 1200. The positioning part 132 is provided with positioning elongated hole 1321 corresponding to the positioning hole 151, and is connected to the other of the second sliding members 150 through positioning member 1100. Understandably, if the thickness of the battery cell 10 varies too much, the deformation of the second elastic member 180 alone cannot provide adequate support. In this embodiment, by providing adjustment holes 141 on the first sliding member 140, when the thickness of the battery cell 10 varies significantly, the positioning member 1100 is first removed or loosened from the positioning part 132. Then, the adjustment member 1200 is removed and fitted into different adjustment holes 141 to adjust the distance between the tab pressure plate 130 and the surface of the support plate 110. After adjustment, the positioning member 1100 is reinstalled or tightened. Thus, compatibility with battery cells 10 that exhibit significant thickness variations is achieved.

[0034] Of course, it should be noted that in other embodiments of this utility model, the second sliding member 150 is provided with adjustment holes 141 spaced apart along a third direction, and the first sliding member 140 is provided with positioning holes 151. Of course, the adjustment of the tab plate 130 along a third direction can also be achieved in other ways, and is not limited to the method of this embodiment.

[0035] Further optional, see reference Figure 6 As shown, the probe layer 100 also includes a third slider 190, on which a first slider 191 is provided. The support plate 110 is provided with a first slide rail 112 that cooperates with the first slider 191. The first slide rail 112 extends along a first direction. The third slider 190 is connected to a second slider 150. The first slider 140 can slide along the first direction under the drive of an external driving mechanism. It is understood that in actual operation, when the external driving mechanism drives the first slider 140 to move through a linkage structure, the second slider 150 and the third slider 190 also move accordingly. Due to the cooperation of the first slider 191 and the first slide rail 112, the third slider 190 is restricted to moving only along the first direction, thereby ensuring that the first slider 140 and the second slider 150 can also slide along the first direction, avoiding the phenomenon of tilting of the tab pressure plate 130 and the charging plate 120 during adjustment.

[0036] Furthermore, it should be noted that in other embodiments of this utility model, the third sliding member 190 is provided with a first slide rail 112, and the support plate 110 is provided with a first slider 191 that cooperates with the first slider 191. Of course, the third sliding member 190 and the support plate 110 can also be connected at regular intervals through a structure of guide posts and guide holes.

[0037] Further options are available, see reference. Figure 6 As shown, the third sliding member 190 is provided with a second slide rail 192 extending along a third direction, and the second sliding member 150 is provided with a second slider 152 cooperating with the second slide rail 192. The first sliding member 140 can slide along a second direction under the drive of an external driving mechanism. It is understood that the position of the tab 101 may vary for different sizes of battery cells 10, and the charging plate 120 needs to be adjusted along a third direction in actual operation to accommodate battery cells 10 of different shapes. In actual operation, when the external driving mechanism drives the first sliding member 140 to move through the linkage structure, the second sliding member 150 and the third sliding member 190 also move accordingly. Due to the cooperation of the second slide rail 192, the third sliding member 190 is restricted to moving only along the second direction, thereby ensuring that the first sliding member 140 and the second sliding member 150 can also slide along the second direction, avoiding the phenomenon of the tab pressure plate 130 and the charging plate 120 becoming skewed during the adjustment process.

[0038] It should be further noted that the first sliding member 140 is provided with a mating hole, and the linkage structure is a connecting rod. When multiple probe layers 100 are arranged sequentially along a third direction, the connecting rod can simultaneously engage with multiple first sliding members 140. Of course, in other embodiments of this utility model, the linkage structure can also be configured with other structural forms according to actual needs.

[0039] This utility model also discloses a pressure restraint device, see reference. Figure 8 As shown, it includes a fixed end 200, a driving member 300, a movable end 400, and multiple probe plates 100 as described above. The multiple probe plates 100 are arranged sequentially along a third direction. The movable end 400 abuts against one probe plate 100. The driving member 300 is mounted on the fixed end 200 and connected to the movable end 400. When the driving member 300 drives the movable end 400 to move, the multiple probe plates 100 can squeeze against each other to apply pressure toward the battery cell 10 mounted on the probe plate 100.

[0040] Because of the probe layer 100 described above, the pressure restraint device can simultaneously clamp battery cells with the same-side tab and battery cells with opposite-side tabs, and is compatible with battery cells 10 with large differences in length and size, thus having a wide range of applications.

[0041] It should be noted that the pressure restraint device also includes an adjustment structure, which includes a drive source and a linkage mechanism. The drive source cooperates with the first slider 191 through the linkage mechanism to adjust the charging plate 120 and the tab pressure plate 130 on each probe layer 100 along the first and second directions, thereby achieving compatibility with battery cells 10 of different lengths and sizes.

[0042] In the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. 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.

[0043] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A probe card characterized by, include: A support plate (110) is provided on the first side of the support plate (110), and the support member (111) is used to support the battery cell (10); Two charging plates (120) are movably disposed on the first side at a distance from each other along a first direction, and each charging plate (120) is provided with at least two conductive areas (121) at a distance from each other along a second direction and with opposite polarities. Two tab plates (130) are spaced apart along the first direction on the second side of the support plate (110), wherein: when the multiple probe layers are arranged sequentially along the third direction, in two adjacent probe layers, the tab plate (130) of one probe layer can press the tab (101) of the battery cell (10) onto the charging plate (120) of the other probe layer.

2. The probe card of claim 1, wherein The distance between the two conductive areas (121) on the same charging plate (120) is at least 30 mm.

3. The probe card of claim 1, wherein The probe layer further includes a first slider (140) and a second slider (150), the first slider (140) and the second slider (150) being slidably mounted on both sides of the support plate (110) along the second direction; wherein, the two ends of the charging plate (120) along the second direction are fixedly connected to the first slider (140) and the second slider (150) respectively, and the two ends of the tab plate (130) along the second direction are connected to the first slider (140) and the second slider (150) respectively.

4. The probe card of claim 3, wherein The charging plate (120) is connected to the first sliding member (140) and the second sliding member (150) respectively at both ends along the second direction via fixing members (160).

5. The probe layer according to claim 4, characterized in that, The fastener (160) includes a first bolt (161), a first elastic element (162), and a second bolt (163). The stud portion of the second bolt (163) is provided with a threaded hole. The first bolt (161) passes through the charging plate (120) and is threadedly connected to the second bolt (163). The stud portion of the second bolt (163) abuts against the head of the first bolt (161). The first elastic element (162) is sleeved on the second bolt (163).

6. The probe card of claim 3, wherein The probe layer also includes a pad (170), the two ends of which are connected to the first sliding member (140) and the second sliding member (150) respectively, and the tab pressure plate (130) is connected to the pad (170) through a second elastic member (180).

7. The probe card of claim 6, wherein One of the first sliding member (140) and the second sliding member (150) is provided with an adjustment hole (141) spaced apart along the third direction. An adjustment part (131) is provided at one end of the electrode pressure plate (130) along the second direction. The adjustment part (131) is provided with an adjustment elongated hole (1311) corresponding to the adjustment hole (141), and is connected to one of the first sliding member (140) and the second sliding member (150) through an adjustment member (1200).

8. The probe card of claim 7, wherein, The other of the first sliding member (140) and the second sliding member (150) is provided with a positioning hole (151). The other end of the electrode pressure plate (130) along the second direction is provided with a positioning part (132). The positioning part (132) is provided with a positioning elongated hole (1321) corresponding to the positioning hole (151), and is connected to the other of the first sliding member (140) and the second sliding member (150) through the positioning member (1100).

9. The probe card of claim 3, wherein The probe layer also includes a third slider (190). One of the third slider (190) and the support plate (110) is provided with a first slider (191). The other of the third slider (190) and the support plate (110) is provided with a first slide rail (112) that cooperates with the first slider (191). The first slide rail (112) extends along the first direction. The third slider (190) is connected to the second slider (150). The first slider (140) can slide along the first direction under the drive of an external driving mechanism.

10. The probe card of claim 9, wherein One of the third slider (190) and the second slider (150) is provided with a second slide rail (192) extending along the third direction, and the other of the third slider (190) and the second slider (150) is provided with a second slider (152) cooperating with the second slide rail (192). The first slider (140) can slide along the second direction under the drive of an external driving mechanism.

11. A pressure confinement apparatus, characterized by, The device includes a fixed end (200), a driving member (300), a movable end (400), and a plurality of probe plates as described in any one of claims 1-10. The plurality of probe plates are arranged sequentially along a third direction. The movable end (400) abuts against one of the probe plates. The driving member (300) is mounted on the fixed end (200) and connected to the movable end (400). When the driving member (300) drives the movable end (400) to move, the plurality of probe plates can press against each other to apply pressure toward the battery cell (10) mounted on the probe plate.

Images