A soft pack battery clamping device and testing device

Abstract

A soft-pack battery clamping device and a testing device, the clamping device includes a printed circuit board, a tab elastic clamping device, a printed silicone plate and a connecting device, the printed circuit board and the tab elastic clamping device are arranged on both sides of the connecting device, and the tab contact area of ​​the printed circuit board and the pressing part of the tab elastic clamping device are kept facing outward; the printed silicone plate covers the outer surface of the pressing part of the tab elastic clamping device; the testing device includes a testing device for testing the battery, several sets of the soft-pack battery clamping devices and a force-applying device for adjusting the clamping degree of the soft-pack battery clamping device. The beneficial effects of the present invention are embodied in: the device solves the contact problem between the contact plate of the probe and the battery tab, and after the improvement, the contact between the two is good, thereby reducing the contact internal resistance; secondly, the device is designed to prevent the tab of the soft-pack battery from being stuck, which can effectively improve the operating efficiency of the device.

Description

Technical Field

[0001] The invention relates to a soft-pack battery clamping device and a testing apparatus, belonging to the field of battery testing. Background Art

[0002] In the formation and capacity test of soft-pack batteries, the connection between the battery and the test equipment mainly relies on the probe form. The probe connection method can achieve a reliable connection between the battery tab and the charging and discharging equipment, without damaging the surface of the battery tab, and can be easily operated to improve work efficiency. At the same time, it also solves the problem of matching the battery tab with the probe, that is, the problem of inconvenient type change. However, new problems need to be improved at the same time: first, the contact plate of the probe needs to be in very good contact with the battery tab; second, it is necessary to prevent the soft-pack battery tab from being stuck by the probe. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a soft-pack battery clamping device and a testing device, which ensure good contact between a contact plate and a battery tab and prevent the battery tab from being stuck.

[0004] A soft-pack battery clamping device described in the present invention is characterized by comprising: a printed circuit board for contacting and connecting with the pole ear of the soft-pack battery, a pole ear elastic clamping device for clamping the pole ear of the soft-pack battery, a printed silicone plate for preventing the soft-pack battery from short-circuiting, and a connecting device for fixing the printed circuit board and the pole ear elastic clamping device, wherein the printed circuit board and the pole ear elastic clamping device are arranged on both sides of the connecting device, and the pole ear contact area of ​​the printed circuit board and the pressing part of the pole ear elastic clamping device are kept facing outward; the printed silicone plate covers the outer surface of the pressing part of the pole ear elastic clamping device;

[0005] The printed circuit board is provided with an induction voltage circuit and an energizing current circuit, and the connection ports of the induction voltage circuit and the energizing current circuit are respectively electrically connected to the connection ports of the tab contact area printed on the outer end surface of the board body, and the test ports of the induction voltage circuit and the energizing current circuit are electrically connected to an external test device;

[0006] The tab elastic clamping device comprises a fixed plate, a compression spring and a pressure plate, wherein the fixed plate and the printed circuit board are respectively fixedly connected to the opposite sides of the connecting device, and the inner end surface of the fixed plate is kept parallel to the inner end surface of the printed circuit board; the outer end surface of the fixed plate is paved with a plurality of compression springs, the bottom end of the compression spring is connected to the outer end surface of the fixed plate, and the top end of the compression spring is commonly connected to the inner end surface of the pressure plate parallel to the fixed plate, so that a block for the insertion of the tab of the soft-pack battery is left between the fixed plate and the pressure plate; the inner end surface of the pressure plate facing the fixed plate is provided with at least one pair of connecting ears which can be perpendicular to the plate body of the pressure plate and have the same direction, and the connecting ears are provided with waist holes arranged along the extension and contraction direction of the pressure plate, and connecting bolts are inserted into the waist holes to realize the movable connection between the pressure plate and the connecting device, so that the pressure plate can be extended and contracted along the axial direction of the compression spring under the drive of the compression spring to compress or loosen the tab of the soft-pack battery inserted in the block; the printed silicone plate covers the outer end surface of the pressure plate.

[0007] The connecting device includes a first fixing member and a second fixing member, wherein the first fixing member and the second fixing member are both insulating members, and the first fixing member and the second fixing member are respectively installed on the two ends of the printed circuit board and the fixing plate through corresponding bolts, the upper end of the first fixing member is provided with a guide tip, and the side is provided with a first positioning protrusion; the top of the second fixing member is provided with an inverted T-shaped slide groove that can slide with the guide rail, and the side is provided with a second positioning protrusion, and the first positioning protrusion and the second positioning protrusion are directly opposite.

[0008] The printed circuit board is divided into a contact area, an insulation area, an installation area and a blank area. The contact area is in contact with the tab of the soft-pack battery. The contact area is divided into an induced voltage area and a power-on current area. The induced voltage area corresponds to an induced voltage circuit, which is electrically connected to the test equipment through corresponding wires; the power-on current area corresponds to a power-on current circuit, which is electrically connected to the test equipment through corresponding wires.

[0009] The cross section of the guide tip is triangular.

[0010] The upper end of the pressing plate is turned inward to form an inclined surface which can be parallel to the guide tip.

[0011] A pair of connecting ears are respectively provided on the edges along the length direction at both ends of the pressing plate, and the two connecting ears at the same end are opposite to each other, and the distance between the two connecting ears is slightly larger than the width of the fixed plate, so that the connecting ears at the ends of the pressing plate can be stuck on the outside of the fixed plate while the fixed plate is parallel to the pressing plate; each connecting ear is provided with a waist hole, and the plane where the central axes of the two opposite waist holes are located is perpendicular to the pressing plate.

[0012] The number of compression springs is 10-15.

[0013] A soft-pack battery detection device, characterized in that: it includes a test device for detecting a battery, several sets of the soft-pack battery clamping devices and a force-applying device for adjusting the clamping degree of the soft-pack battery clamping devices, the detection end of the test device is electrically connected to the ear contact plate and the compression spring pressure plate of the soft-pack battery probe device respectively; the soft-pack battery clamping devices are sequentially installed in parallel on a slide rail and are slidably connected to the slide rail, and the soft-pack battery clamping devices are linked to each other; the force-applying device includes a drive motor and a slide rail, the output end of the drive motor is connected to the soft-pack battery clamping device, so that the soft-pack battery clamping device can slide along the slide rail driven by the drive motor.

[0014] The method for detecting a soft-pack battery using the detection device of the present invention comprises the following steps:

[0015] 1) Move the tray loaded with batteries to the designated area of ​​the test equipment, keep the tabs extended, and prepare for testing;

[0016] 2) The soft-pack battery probe device is in place, the clamping device is started, the printed circuit board of one probe is under the tab at one end of the soft-pack battery, and the printed silicone plate of the other probe is above the tab at the same end of the soft-pack battery;

[0017] 3) The force applying device is started, and the printed circuit board and the printed silicone plate of the probe are in close contact with the tabs respectively;

[0018] 4) The battery test starts and ends when the required data is tested.

[0019] The beneficial effects of the present invention are as follows: the device solves the contact problem between the contact plate of the probe and the battery tab. After the improvement, the contact between the two is good, thereby reducing the contact internal resistance; secondly, the device is designed to prevent the soft-pack battery tab from being stuck, which can effectively improve the operating efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 , 2 It is a left and right oblique view of the present invention;

[0021] Figure 3 It is a structural diagram of a printed circuit board of the present invention; Figure 4 is a structural diagram of a first fixing member;

[0022] Figure 5 is a structural diagram of a second fixing member;

[0023] Figure 6 It is a structural diagram of the tab elastic clamping device;

[0024] Figure 7 It is a structural diagram of the pressure plate. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with the accompanying drawings.

[0026] Refer to the attached figure:

[0027] Embodiment 1 A soft-pack battery clamping device according to the present invention comprises a printed circuit board 1 for contacting and connecting with a soft-pack battery tab, a tab elastic clamping device 2 for clamping the tab of the soft-pack battery, a printed silicone plate 3 for preventing the soft-pack battery from short-circuiting, and a connecting device 4 for fixing the printed circuit board and the tab elastic clamping device, wherein the printed circuit board and the tab elastic clamping device are arranged on both sides of the connecting device, and the tab contact area 11 of the printed circuit board 1 and the pressing portion of the tab elastic clamping device 2 are kept facing outward; the printed silicone plate 3 covers the outer surface of the pressing portion of the tab elastic clamping device 2;

[0028] The printed circuit board 1 is provided with an induction voltage circuit and an energizing current circuit, and the connection ports of the induction voltage circuit and the energizing current circuit are respectively electrically connected to the connection ports of the tab contact area printed on the outer end surface of the board body, and the test ports of the induction voltage circuit and the energizing current circuit are electrically connected to an external test device;

[0029] The tab elastic clamping device 2 comprises a fixing plate 21, a compression spring 22 and a pressure plate 23. The fixing plate 21 and the printed circuit board 1 are respectively fixed to the opposite sides of the connecting device 4, and the inner end surface of the fixing plate 21 is kept parallel to the inner end surface of the printed circuit board 1; the outer end surface of the fixing plate 21 is paved with a plurality of compression springs 22, the bottom end of the compression spring 22 is connected to the outer end surface of the fixing plate 21, and the top end of the compression spring 22 is connected to the inner end surface of the pressure plate 23 which is parallel to the fixing plate 21, so that the fixing plate 21 and the pressure plate 23 are parallel to each other. A barrier is left between the two for the insertion of the soft-pack battery ear; the inner end surface of the pressing plate 23 facing the fixed plate is provided with at least one pair of connecting ears 231 which can be perpendicular to the pressing plate body and in the same direction, and the connecting ears 231 are provided with waist holes 232 arranged along the expansion and contraction direction of the pressing plate, and connecting bolts are inserted into the waist holes 232 to realize the movable connection between the pressing plate and the connecting device, so that the pressing plate can be driven by the compression spring to expand and contract along the axial direction of the compression spring to tighten or loosen the soft-pack battery ear inserted in the barrier; the printed silicone plate 3 covers the outer end surface of the pressing plate.

[0030] The connecting device 4 includes a first fixing member 41 and a second fixing member 42, wherein the first fixing member 41 and the second fixing member 42 are both insulating members, and the first fixing member 41 and the second fixing member 42 are respectively installed on the two ends of the printed circuit board 1 and the fixing plate 21 through corresponding bolts, and the upper end of the first fixing member 41 is provided with a guide tip 411, and the side is provided with a first positioning protrusion 412; the top of the second fixing member 42 is provided with an inverted T-shaped slide groove 421 that can slide with the guide rail, and the length of the inverted T-shaped slide groove 421 is greater than the width of the fixing plate, and the excess part forms a second positioning protrusion 422, and the first positioning protrusion 412 and the second positioning protrusion 422 are directly opposite.

[0031] The printed circuit board 1 is divided into a contact area, an insulation area, an installation area and a blank area. The contact area is in contact with the tab of the soft-pack battery. The contact area is divided into an induced voltage area and a powered current area. The induced voltage area corresponds to an induced voltage circuit, which is electrically connected to the test equipment through corresponding wires; the powered current area corresponds to a powered current circuit, which is electrically connected to the test equipment through corresponding wires.

[0032] The cross section of the guide tip 411 is a triangle, the orthographic projection of the guide tip on a plane parallel to the printed circuit board is a rectangle, and the projection on a vertical plane passing through the central axis of the printed circuit board in the longitudinal direction is a triangle.

[0033] The upper end of the pressing plate 23 is turned inward to form an inclined surface 233 which can be parallel to the guide tip.

[0034] A pair of connecting ears 231 are respectively provided on the edges along the length direction at both ends of the pressing plate 23, and the two connecting ears 231 at the same end are opposite to each other, and the distance between the two connecting ears 231 is slightly larger than the width of the fixed plate 21, so that the connecting ears 231 at the ends of the pressing plate 23 are stuck on the outer side of the fixed plate 21 while the fixed plate 21 is parallel to the pressing plate 23; each connecting ear is provided with a waist hole 232, and the plane where the central axes of the two opposite waist holes 232 are located is perpendicular to the pressing plate.

[0035] The number of compression springs is 10-15.

[0036] Example 2 The difference between this example and Example 1 is that: the printed circuit board, as the part that can contact the soft-pack battery, is the bottom layer, and the first fixing part and the second fixing part are respectively installed at its two ends, and the contact plate is fixed to the first fixing part and the second fixing part by screws; a pole ear elastic clamping device is installed parallel to the upper side of the first fixing part and the second fixing part, and the pole ear elastic clamping device is fixed to the first fixing part and the second fixing part by screws; the telescopic part of the pole ear elastic clamping device is a pressure plate connected to the top of the compression spring, and connecting ears are provided at both ends of the pressure plate, and the connecting ears are connected to the first fixing part and the second fixing part by parent-child screws respectively; the printed silicone plate is a printed circuit board silicone, which is adhered to the outer surface of the pressure plate.

[0037] Both ends of the pressing plate are provided with connecting ears, and the connecting ears are provided with waist holes. The waist holes of the connecting ears are connected with the first fixing member and the second fixing member respectively through the mother-and-child screws to ensure that the pressing plate can be fixed and still move up and down.

[0038] The material of the first fixing member and the second fixing member is polytetrafluoroethylene; the material of the tab elastic clamping device is stainless steel, but is not limited to stainless steel, and can be other metal structural members as long as they can conduct electricity; the material of the printed circuit board silicone is a composite material of nylon and silicone.

[0039] The printed circuit board is used for conducting the circuit, and is divided into a contact area, an insulating area, an installation area and a blank area. The contact area is in contact with the tabs of the battery cell, and is divided into an induced voltage area and a powered current area. An induced voltage circuit is arranged corresponding to the induced voltage area, and is electrically connected to the test equipment through corresponding wires; a powered current circuit is arranged corresponding to the powered current area, and is electrically connected to the test equipment through corresponding wires; the tab elastic clamping device is used to fix the battery tab, and the compression spring is used to make the battery and the printed circuit board contact better; the printed silicone plate is used for insulation to prevent the battery from short circuiting; the first fixing member and the second fixing member are used to fix the printed circuit board and the tab elastic clamping device, and play a limiting role.

[0040] The number of compression springs needs to be controlled to 10-15 to ensure better contact between the battery and the printed circuit board.

[0041] The contact area on the printed circuit board is connected to the pole ear of the soft-pack battery for conducting the circuit; the pole ear elastic clamping device is used to fix the battery pole ear; the printed silicone plate is used for insulation to prevent the battery from short circuiting; the first fixing member and the second fixing member are used to fix the printed circuit board and the pole ear elastic clamping device, and play a limiting role. At the same time, the second fixing member has a connecting sliding T-shaped slide groove.

[0042] The compression springs are welded to the bottom plate; the number of compression springs is 10-15 to make the battery contact better with the contact plate.

[0043] The soft-pack battery clamping equipment is not only suitable for testing soft-pack batteries, but also for testing other soft-pack structure batteries, such as soft-pack lithium-ion capacitors, soft-pack supercapacitors and other testing equipment.

[0044] Embodiment 3 In this embodiment: from Figure 1-2 It can be seen that the soft-pack battery probe device described in the present invention includes a printed circuit board, a tab elastic clamping device, a printed silicone plate and a connecting device, wherein the printed circuit board and the tab elastic clamping device are arranged on both sides of the connecting device, and the tab contact area of ​​the printed circuit board and the pressing portion of the tab elastic clamping device are kept facing outward; the printed silicone plate covers the outer surface of the pressing portion of the tab elastic clamping device;

[0045] from Figure 1-3 It can be seen that the two ends of the printed circuit board are fixed to the first fixing member and the second fixing member respectively by screws; and the tab elastic clamping device is installed parallel above the first fixing member and the second fixing member.

[0046] from Figure 6 It can be seen that a pressure plate is installed parallel to the fixing plate of the tab elastic clamping device, and a printed silicone plate is arranged just above the pressure plate.

[0047] from Figure 7 It can be seen that the compression springs are welded to the fixing plate; at the same time, the number of compression springs is controlled to 13, which can make the battery contact better with the contact plate.

[0048] from Figure 4 It can be seen that the first fixing member has screw holes for fixing the printed circuit board, the fixing plate and the pressing plate.

[0049] from Figure 5 It can be seen that the second fixing member has screw holes for fixing the printed circuit board, the fixing plate and the pressing plate; and also has a T-slot connected to the inverted T-shaped slide rail;

[0050] from Figure 7 It can be seen that there are connecting ears at both ends of the pressure plate, and the connecting ears have waist holes, which are connected to the first fixing member and the second fixing member respectively through parent and child screws to ensure that the pressure plate can move up and down while being fixed.

[0051] Embodiment 3 A soft-pack battery detection device comprises a test device for detecting a battery, several sets of the soft-pack battery clamping devices and a force-applying device for adjusting the clamping degree of the soft-pack battery clamping devices, wherein the detection end of the test device is electrically connected to the ear contact plate and the compression spring pressure plate of the soft-pack battery probe device respectively; the soft-pack battery clamping devices are sequentially installed in parallel on a slide rail and are slidably connected to the slide rail, and the soft-pack battery clamping devices are linked to each other; the force-applying device comprises a driving motor and a slide rail, and the output end of the driving motor is connected to the soft-pack battery clamping device, so that the soft-pack battery clamping device can slide along the slide rail driven by the driving motor.

[0052] The contents described in the embodiments of this specification are merely an enumeration of implementation forms of the inventive concept. The protection scope of the present invention should not be regarded as limited to the specific forms described in the embodiments. The protection scope of the present invention also includes equivalent technical means that can be thought of by those skilled in the art based on the inventive concept.

Claims

1. A soft pack battery clamping device, characterized in that: It includes a printed circuit board for contacting and connecting with the pole ear of a soft-pack battery, a pole ear elastic clamping device for clamping the pole ear of the soft-pack battery, a printed silicone plate for preventing the soft-pack battery from short-circuiting, and a connecting device for fixing the printed circuit board and the pole ear elastic clamping device, wherein the printed circuit board and the pole ear elastic clamping device are arranged on both sides of the connecting device, and the pole ear contact area of ​​the printed circuit board and the pressing part of the pole ear elastic clamping device are kept facing outward; the printed silicone plate covers the outer surface of the pressing part of the pole ear elastic clamping device; the connecting device includes a first fixing member and a second fixing member, wherein the first fixing member and the second fixing member are both insulating members; The printed circuit board is provided with an induction voltage circuit and an energizing current circuit, and the connection ports of the induction voltage circuit and the energizing current circuit are respectively electrically connected to the connection ports of the tab contact area printed on the outer end surface of the board body, and the test ports of the induction voltage circuit and the energizing current circuit are electrically connected to an external test device; The pole ear elastic clamping device comprises a fixed plate, a compression spring and a pressure plate, the fixed plate and the printed circuit board are respectively fixedly connected to the opposite sides of the connecting device, and the inner end surface of the fixed plate is kept parallel to the inner end surface of the printed circuit board; the outer end surface of the fixed plate is paved with a plurality of compression springs, the bottom end of the compression spring is connected to the outer end surface of the fixed plate, and the top end of the compression spring is commonly connected to the inner end surface of the pressure plate parallel to the fixed plate, so that a block for the pole ear of the soft-pack battery to be inserted is left between the fixed plate and the pressure plate; the inner end surface of the pressure plate facing the fixed plate is provided with at least one pair of connecting ears which can be perpendicular to the plate body of the pressure plate and have the same direction, and the connecting ears are provided with waist holes arranged along the expansion and contraction direction of the pressure plate, and connecting bolts are inserted into the waist holes to realize the movable connection between the pressure plate and the connecting device, so that the pressure plate can be extended and contracted along the axial direction of the compression spring under the drive of the compression spring to compress or loosen the pole ear of the soft-pack battery inserted in the block; the printed silicone plate covers the outer end surface of the pressure plate; The printed circuit board is used for conducting the circuit, and is divided into a contact area, an insulating area, an installation area and a blank area. The contact area is in contact with the tab of the battery cell, and the contact area is divided into an induced voltage area and a powered current area, wherein the induced voltage area corresponds to an induced voltage circuit, and is electrically connected to the test equipment through corresponding wires; the powered current area corresponds to a powered current circuit, and is electrically connected to the test equipment through corresponding wires; the tab elastic clamping device is used to fix the battery tab, and the compression spring is used to make the battery contact better with the printed circuit board; the printed silicone plate is used for insulation to prevent the battery from short circuiting; the first fixing member and the second fixing member are used to fix the printed circuit board and the tab elastic clamping device, and play a limiting role.

2. A soft pack battery clamping device as claimed in claim 1, characterized in that: The first fixing member and the second fixing member are respectively clamped on the two ends of the printed circuit board and the fixing plate by corresponding bolts, the upper end of the first fixing member is provided with a guide tip, and the side is provided with a first positioning protrusion; the top of the second fixing member is provided with an inverted T-shaped slide groove that can slide with the guide rail, and the side is provided with a second positioning protrusion, and the first positioning protrusion and the second positioning protrusion are directly opposite.

3. A soft pack battery clamping device as claimed in claim 2, characterized in that: The cross section of the guide tip is triangular.

4. A soft pack battery clamping device as claimed in claim 3, characterized in that: The upper end of the pressing plate is turned inward to form an inclined surface which can be parallel to the guide tip.

5. A soft pack battery clamping device as claimed in claim 3, characterized in that: A pair of connecting ears are respectively provided on the edges along the length direction at both ends of the pressing plate, and the two connecting ears at the same end are opposite to each other, and the distance between the two connecting ears is slightly larger than the width of the fixed plate, so that the connecting ears at the ends of the pressing plate can be stuck on the outside of the fixed plate while the fixed plate is parallel to the pressing plate; each connecting ear is provided with a waist hole, and the plane where the central axes of the two opposite waist holes are located is perpendicular to the pressing plate.

6. A soft pack battery clamping device as claimed in claim 1, characterized in that: The number of compression springs is 10-15.

7. A soft pack battery testing device, characterized in that: It comprises a test device for testing a battery, several sets of soft-pack battery clamping devices as described in any one of claims 1 to 6, and a force-applying device for adjusting the clamping degree of the soft-pack battery clamping device, wherein the detection end of the test device is electrically connected to the ear contact plate and the compression spring pressure plate of the soft-pack battery probe device respectively; the soft-pack battery clamping devices are sequentially installed in parallel on the slide rail and are slidably connected to the slide rail, and the soft-pack battery clamping devices are linked to each other; the force-applying device comprises a driving motor and a slide rail, and the output end of the driving motor is connected to the soft-pack battery clamping device, so that the soft-pack battery clamping device can slide along the slide rail driven by the driving motor.

Images