A soft-pack battery probe device, a test system and a test method

Abstract

The present invention discloses a soft-pack battery probe device, a testing device and a testing method. The probe device includes: a tab contact plate, which is an electrical conductor for realizing electrical connection between the battery and the testing equipment; a fixing unit, which is an insulating device and includes a printed circuit board head mounting part and a printed circuit board bottom slider; and a contact buffer unit for clamping the battery tab while realizing electrical connection between the battery tab and the testing equipment. The testing system includes a testing equipment for detecting the battery and several sets of soft-pack battery probe devices, keeping the arrangement of the soft-pack battery probe devices consistent, and the detection ends of the testing equipment are electrically connected to the tab contact plate and the spring pressure plate of the soft-pack battery probe devices respectively. The testing method includes the following steps: getting ready for testing; clamping the battery tab; starting the battery test and conducting the test until the test is completed. The beneficial effects of the present invention are: the probe has a wide application range, a small contact resistance and can avoid damage.

Description

Technical Field

[0001] The present invention relates to a soft-pack battery probe device, a test system and a test method, belonging to the field of battery testing. Background Art

[0002] In the formation and grading tests of traditional soft-pack batteries, the connection between the battery and the test equipment mainly relies on alligator clips. Using this method, there are problems such as troublesome wiring, many wirings, and the risk of incorrect connection. Therefore, the electrical connector between the external transmission wire and the battery tab is an important basic component, and an extremely important component in the battery formation and grading equipment. For this reason, using a probe connection is a good connection method, which can achieve a reliable connection between the battery tab and the charge and discharge equipment, simplify the operation, and improve work efficiency. However, there are some problems in the existing probe technology. First, there is a problem of matching between the battery tab size and the probe, that is, it is not convenient to change the type; second, the contact resistance between the probe and the battery tab is large; third, the probe is likely to damage the surface of the battery tab. Summary of the Invention

[0003] In order to solve the above problems, the present invention provides a soft-pack battery probe device, a test system and a test method that are convenient for matching and replacement operation, have high crimping reliability, and are suitable for use in soft-pack battery charging test equipment.

[0004] A soft-pack battery probe device according to the present invention is characterized by comprising:

[0005] A tab contact plate, which is an electrical conductor. The outer end face is provided with a tab contact area for contacting and connecting with the battery tab. The two ends of the inner end face are provided with installation areas for installing fixing units. The signal connection end of the tab contact area is electrically connected to an external test equipment, and is used to realize the electrical connection between the battery and the test equipment;

[0006] A fixing unit, which is an insulating device, including a printed circuit board head mounting part and a printed circuit board bottom slider. The printed circuit board head mounting part and the printed circuit board bottom slider are respectively installed in the installation areas at both ends of the tab contact plate; there is a space for accommodating a slide rail between the printed circuit board bottom slider and the printed circuit board head mounting part. The end face of the printed circuit board bottom slider facing the slide rail is provided with a chute that can be slidably matched with it;

[0007] And a contact buffer unit, which is arranged on both sides of the printed circuit board head mounting part and the printed circuit board bottom slider with the tab contact plate. The contact buffer unit has a telescopic part that can be telescoped in the vertical direction of the tab contact plate, and the telescopic part is an electrical conductor, and its outer surface is covered with an insulating part, and is used to clamp the battery tab while realizing the electrical connection between the battery tab and the test equipment.

[0008] The tab contact plate is an electrical conductive component, which is divided into a contact area, an insulating area, a mounting area, and a blank area. The contact area is in contact connection with the tab of the battery, and the contact area includes an induced voltage area and a conducting current area.

[0009] The printed circuit board head mounting member is composed of a guiding portion, a main body fixing portion, and a laterally protruding portion. The guiding portion, the main body fixing portion, and the laterally protruding portion are integrally formed. The guiding portion is mounted at the upper end of the main body fixing portion, and the guiding tip of the guiding portion is kept facing outward along the length direction of the contact plate. The laterally protruding portion is arranged on the side surface of the main body fixing portion.

[0010] The guiding portion is a triangular prism, and the orthographic projection of the guiding portion on the contact plate or a plane parallel to the contact plate is a rectangle.

[0011] The printed circuit board bottom slider includes a main body slider and a laterally protruding block. The main body slider is a "7"-shaped structure composed of a horizontal portion and a vertical portion. A T-shaped chute that can cooperate with the slide rail is provided on the top surface of the horizontal portion. The length of the horizontal portion is greater than the width of the contact plate, so that the end of the horizontal portion falls outside the space. The vertical portion is mounted on the mounting area at the lower part of the contact plate by screws. A laterally protruding block is provided on the upper side surface of the vertical portion, and the laterally protruding block is kept facing the laterally protruding portion of the printed circuit board head mounting member.

[0012] The buffer unit includes a spring assembly, a spring pressure plate, and a printed insulating board. The spring assembly is composed of a bottom plate and springs arranged on the surface of the bottom plate. The bottom plate and the tab contact plate are arranged on both sides of the fixing unit. A number of springs are arranged on the end surface of the bottom plate away from the tab contact plate. The bottom ends of the springs are fixedly connected to the bottom plate, and the top ends of the springs are commonly fixedly connected to the inner surface of the spring pressure plate, so that the spring pressure plate moves up and down along the spring axis under the action of the springs. The springs and the spring pressure plate are electrical conductive components, and the spring pressure plate is electrically connected to an external testing device, which is used to fix the battery tab and realize the circuit conduction between the battery and the external testing device. The upper end of the spring pressure plate is turned inward to form an inclined edge, so that the inclined edge of the spring pressure plate covers directly above the guiding portion. The two ends of the spring pressure plate are turned inward to form protruding ends perpendicular to the spring pressure plate. Longitudinal and transverse waist holes are provided on the protruding ends. The longitudinal and transverse waist holes are respectively connected to the printed circuit board head mounting member and the printed circuit board bottom slider by screws, ensuring that the spring pressure plate is fixed while being able to move up and down along the spring telescopic direction to play a buffering role. The printed silicone board covers the outer surface of the spring pressure plate, which is used for insulation to prevent the battery from short-circuiting.

[0013] The springs are welded to the bottom plate, and the number of springs is 18 - 22.

[0014] A test system constructed using a pouch battery probe device, characterized in that: it includes a test device for detecting the battery and several sets of the above-mentioned pouch battery probe devices. Among them, the arrangements of the pouch battery probe devices are kept consistent, and the detection ends of the test device are electrically connected to the ear contact plates and spring pressure plates of the pouch battery probe devices respectively.

[0015] A method for testing a battery using the test system of the present invention includes the following steps:

[0016] 1) Move the tray with the battery installed to the designated area of the test device, keep the ears protruding, and the test preparation is in place;

[0017] 2) The pouch battery probe device is installed in place, the probe device is started, the ear contact plate of one set of probes is located below the ear at one end of the pouch battery, and the printed silicone plate of another adjacent pouch battery probe device is located above the ear at the same end of the pouch battery;

[0018] 3) Adjust the installation position of the pouch battery probe device so that the ear contact plate and the printed silicone plate are in close contact with the ears respectively;

[0019] 4) The battery test starts and the test is carried out until the test is completed.

[0020] The beneficial effects of the present invention are reflected in: First, it solves the problem of the matching between the battery ear size and the probe, that is, it is more convenient to change the type, and the probe has a wider application range; Second, to a certain extent, it solves the problem of large contact resistance between the probe and the battery ear; Third, the contact plate of the probe and the printed silicone plate are in contact with the ear, greatly reducing the surface damage to the battery ear. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 、 2 are the left and right oblique two views of the present invention;

[0022] Figure 3 is the structure diagram of the ear contact plate of the present invention;

[0023] Figure 4 is the structure diagram of the printed board head mounting part;

[0024] Figure 5 is the structure diagram of the printed board bottom slider;

[0025] Figure 6 is the structure diagram of the spring assembly;

[0026] Figure 7 is the structure diagram of the spring pressure plate. DETAILED DESCRIPTION OF THE INVENTION

[0027] The present invention will be further described below with reference to the accompanying drawings.

[0028] Refer to the attached figure:

[0029] Embodiment 1 A soft-pack battery probe device according to the present invention comprises:

[0030] The tab contact plate 1 is a conductive device, and the outer end surface is provided with a tab contact area for contacting and connecting with the battery tab, and the two ends of the inner end surface are provided with installation areas for installing the fixing unit, and the signal connection end of the tab contact area is electrically connected to the external test equipment to realize the circuit conduction between the battery and the test equipment;

[0031] The fixing unit 2 is an insulating device, comprising a printed circuit board head mounting member 21 and a printed circuit board bottom slider 22, wherein the printed circuit board head mounting member and the printed circuit board bottom slider are respectively mounted on the mounting areas at both ends of the tab contact plate; a space for accommodating a slide rail is reserved between the printed circuit board bottom slider 22 and the printed circuit board head mounting member 21, and a slide groove that can slideably cooperate with the slide rail is provided on the end surface of the printed circuit board bottom slider facing the slide rail;

[0032] And the contact buffer unit 3 is arranged on both sides of the printed circuit board head mounting part 21 and the bottom slider of the printed circuit board with the lug contact plate, and the contact buffer unit has a telescopic part that can be telescoped in the vertical direction of the lug contact plate, and the telescopic part is a conductive device, and its outer surface is covered with an insulating plate 33, which is used to clamp the battery lug while realizing circuit conduction between the battery lug and the test equipment.

[0033] The tab contact plate 1 is a conductive device, which is divided into a contact area 11, an insulating area, a mounting area and a blank area. The contact area 11 is in contact with the tab of the battery and includes an induced voltage area and a current area.

[0034] The printed circuit board head mounting part 21 is composed of a guide portion 211, a main body fixing portion 212 and a lateral extension portion 213, and the guide portion 211, the main body fixing portion 212 and the lateral extension portion 213 are integrally formed; the guide portion 211 is installed on the upper end of the main body fixing portion 212, and the guide tip of the guide portion 211 is kept facing outward along the length direction of the contact plate, and the lateral extension portion 213 is arranged on the side of the main body fixing portion 212.

[0035] The guide portion 211 is a triangular prism, and the orthographic projection of the guide portion 211 on the tab contact plate or on a plane parallel to the tab contact plate is a rectangle.

[0036] The slider 22 at the bottom of the printed circuit board includes a main slider 221 and a laterally protruding block 222. The main slider 221 has a "7"-shaped structure composed of a horizontal part and a vertical part. On the top surface of the horizontal part, there is a T-shaped chute 223 that can cooperate with the slide rail. The length of the horizontal part is greater than the width of the contact plate, so that the end of the horizontal part falls outside the space. The vertical part is installed on the installation area at the lower part of the contact plate by screws. A laterally protruding block is provided on the upper side surface of the vertical part, and the laterally protruding block is kept facing the laterally protruding part of the head mounting part of the printed circuit board.

[0037] The buffer unit 3 includes a spring assembly 31, a spring pressure plate 32, and a printed insulating board 33. The spring assembly 31 is composed of a bottom plate 311 and springs 312 arranged on the surface of the bottom plate. The bottom plate 311 and the ear contact plate 1 are arranged on both sides of the fixing unit 2. A number of springs 312 are arranged on the end face of the bottom plate 311 away from the ear contact plate 1. The bottom ends of the springs 312 are fixedly connected to the bottom plate 311, and the top ends of the springs 312 are commonly fixedly connected to the inner surface of the spring pressure plate 32, so that the spring pressure plate 32 moves up and down along the spring axis under the action of the springs. The springs 312 and the spring pressure plate 32 are electrical conductive components, and the spring pressure plate 32 is electrically connected to an external test device, which is used to fix the battery ear and realize the circuit conduction between the battery and the external test device; the upper end of the spring pressure plate 32 is turned inward to form an inclined edge 321, so that the inclined edge of the spring pressure plate 321 covers directly above the guiding part, and the inclined edge does not contact the inclined surface of the guiding part; both ends of the spring pressure plate 32 are turned inward to form protruding ends 322 perpendicular to the spring pressure plate 32. The protruding ends 322 are provided with longitudinal and transverse waist holes 323 (a total of two, and the two waist holes are arranged side by side). The longitudinal and transverse waist holes 323 are respectively connected to the head mounting part 21 of the printed circuit board and the slider 22 at the bottom of the printed circuit board by screws, ensuring that the spring pressure plate 32 is fixed while being able to move up and down along the spring telescopic direction to play a buffering role; the printed silicone board 33 covers the outer surface of the spring pressure plate 32, which is used for insulation to prevent the battery from short-circuiting.

[0038] The springs 312 are welded to the bottom plate, and the number of the springs 312 is 18 - 22.

[0039] Embodiment 2 The difference between this embodiment and Embodiment 1 is that: as Figure 1 seen, the ear contact plate is the bottommost layer, and both ends of the ear contact plate are fixedly connected to the head mounting part of the printed circuit board and the slider at the bottom of the printed circuit board by screws respectively; a buffer unit is installed parallel and above the head mounting part of the printed circuit board and the slider at the bottom of the printed circuit board.

[0040] As Figure 6 seen, a spring pressure plate is installed parallel and above the spring assembly, and there is a printed silicone board directly above the spring pressure plate.

[0041] As Figure 7It can be seen that the spring assembly is composed of a bottom plate and several springs, and the springs are welded to the bottom plate; meanwhile, the number of springs is 18 - 22.

[0042] From Figure 4 it can be seen that the printed circuit board head mounting part has screw holes for fixedly connecting the tab contact plate, the spring assembly and the spring pressing plate.

[0043] From Figure 5 it can be seen that the printed circuit board bottom slider has screw holes for fixedly connecting the tab contact plate, the spring assembly and the spring pressing plate; meanwhile, it has a T-shaped groove for connecting the slide rail;

[0044] From Figure 7 it can be seen that a spring pressing plate is installed above the spring assembly in parallel. The two ends of the spring pressing plate have protruding ends, and the protruding ends have longitudinal and transverse waist holes. The longitudinal and transverse waist holes are respectively connected to the printed circuit board head mounting part and the printed circuit board bottom slider through screws, ensuring that the spring pressing plate can move up and down while being fixed.

[0045] Embodiment 3 The difference between this embodiment and Embodiment 3 is that: a spring assembly is installed above the printed circuit board head mounting part and the printed circuit board bottom slider in parallel, and there are two protruding nails on the spring assembly, which are directly assembled on the printed circuit board head mounting part and the printed circuit board bottom slider.

[0046] The printed circuit board silicone adheres to the spring pressing plate.

[0047] The materials of the printed circuit board head mounting part and the printed circuit board bottom slider are polytetrafluoroethylene; the materials of the spring assembly and the spring pressing plate are stainless steel; the material of the printed circuit board silicone is silicone.

[0048] The tab contact plate 1 (reference patent: CN201821492279.X) is used to conduct the circuit, and is divided into a contact area, an insulation area, a mounting area and a blank area. The contact area is in contact connection with the tab of the battery, and the contact area includes an induced voltage area and a conduction current area; the spring assembly and the spring pressing plate are used to fix the battery tab, and the printed silicone plate is used for insulation to prevent the battery from short-circuiting; the printed circuit board head mounting part and the printed circuit board bottom slider are used to fix the contact plate, the spring assembly and the spring pressing plate, playing a limiting role.

[0049] Embodiment 4 A test system constructed by using a soft-pack battery probe device, including a test device for detecting the battery and several sets of the soft-pack battery probe devices. Among them, the arrangements of the soft-pack battery probe devices are kept consistent, and the detection ends of the test equipment are respectively electrically connected to the tab contact plate and the spring pressing plate of the soft-pack battery probe device.

[0050] Embodiment 5 A method for testing a battery by using the test system of the present invention, including the following steps:

[0051] 1) Move the tray with the battery installed to the designated area of the test equipment, keep the tabs protruding, and the test preparation is in place;

[0052] 2) The pouch cell probe device is equipped and in place, the probe device is started, the tab contact plate of one set of probes is below the tab at one end of the pouch cell, and the printed silicone plate of another adjacent pouch cell probe device is above the tab at the same end of the pouch cell;

[0053] 3) Adjust the position of the pouch cell probe device so that the tab contact plate and the printed silicone plate are in close contact with the tabs respectively;

[0054] 4) The battery test starts and the test is carried out until the test is completed.

[0055] The content described in the embodiments of this specification is only a list of the implementation forms of the inventive concept. The protection scope of the present invention should not be regarded as limited to the specific forms stated in the embodiments. The protection scope of the present invention also includes equivalent technical means that can be conceived by those skilled in the art according to the inventive concept.

Claims

1. A soft-pack battery probe device, characterized in that Comprising: The tab contact plate, which is an electrical conductive device, has a tab contact area on its outer end face for contacting and connecting with the battery tab, and installation areas for installing fixing units at both ends of its inner end face. The signal connection end of the tab contact area is electrically connected to an external test device to achieve electrical conduction between the battery and the test device; The fixing unit, which is an insulating device, includes a printed circuit board head mounting part and a printed circuit board bottom slider. The printed circuit board head mounting part and the printed circuit board bottom slider are respectively installed in the installation areas at both ends of the tab contact plate. There is a space for accommodating the slide rail between the printed circuit board bottom slider and the printed circuit board head mounting part. A sliding groove that can be slidably matched with it is provided on the end face of the printed circuit board bottom slider facing the slide rail; And the contact buffer unit, which is arranged on both sides of the printed circuit board head mounting part and the printed circuit board bottom slider respectively with the tab contact plate. And the contact buffer unit has a telescopic part that can be telescoped in the vertical direction of the tab contact plate, and the telescopic part is an electrical conductive device, and its outer surface is covered with an insulating part to clamp the battery tab and at the same time realize the circuit between the battery tab and the test device; The tab contact plate is an electrical conductive device, which is divided into a contact area, an insulating area, an installation area and a blank area. The contact area is in contact connection with the tab of the battery, and the contact area includes an induced voltage area and a conducting current area; The contact buffer unit includes a spring assembly, a spring pressing plate and a printed insulating board. The spring assembly is composed of a bottom plate and springs arranged on the surface of the bottom plate. The bottom plate and the tab contact plate are arranged on both sides of the fixing unit. A number of springs are arranged on the end face of the bottom plate away from the tab contact plate. The bottom ends of the springs are fixedly connected to the bottom plate, and the top ends of the springs are jointly fixedly connected to the inner surface of the spring pressing plate, so that the spring pressing plate moves up and down along the spring axis under the action of the springs. The springs and the spring pressing plate are electrical conductive devices, and the spring pressing plate is electrically connected to an external test device to fix the battery tab and realize the circuit between the battery and the external test device; The upper end of the spring pressing plate is turned inward to form an inclined edge, so that the inclined edge of the spring pressing plate covers directly above the guiding part; The two ends of the spring pressing plate are turned inward and have extending ends perpendicular to the spring pressing plate. The extending ends are provided with longitudinal and transverse waist holes, and the longitudinal and transverse waist holes are respectively connected to the printed circuit board head mounting part and the printed circuit board bottom slider by screws to ensure that the spring pressing plate is fixed while being able to move up and down along the spring telescopic direction to play a buffering role; The printed silicone plate covers the outer surface of the spring pressing plate for insulation to prevent battery short circuit; When using the probe device to test the battery, keep the arrangement of several sets of soft package battery probe devices consistent, and the detection ends of the test device are respectively electrically connected to the tab contact plate and the spring pressing plate of the soft package battery probe device. The soft package battery probe device is in place, the probe device is started, the tab contact plate of one set of probes is under the tab at one end of the soft package battery, and the printed silicone plate of another set of adjacent soft package battery probe devices is above the tab at the same end of the soft package battery; Adjust the position of the soft package battery probe device so that the tab contact plate and the printed silicone plate are respectively in close contact with the tab.

2. The soft-pack battery probe device according to claim 1, characterized in that: The printed circuit board head mounting member is composed of a guiding portion, a main body fixing portion, and a laterally extending portion, and the guiding portion, the main body fixing portion, and the laterally extending portion are integrally formed; the guiding portion is mounted on the upper end of the main body fixing portion, and the guiding tip of the guiding portion faces outward along the length direction of the contact plate, and the laterally extending portion is disposed on the side surface of the main body fixing portion.

3. The soft-pack battery probe device according to claim 2, wherein: The guiding portion is a triangular prism, and the orthographic projection of the guiding portion on the contact plate or a plane parallel to the contact plate is a rectangle.

4. The soft-pack battery probe device according to claim 1, wherein: The printed circuit board bottom slider includes a main body slider and a laterally extending block. The main body slider is a "7"-shaped structure composed of a horizontal portion and a vertical portion. A T-shaped chute that can cooperate with the slide rail is provided on the top surface of the horizontal portion. The length of the horizontal portion is greater than the width of the contact plate, so that the end of the horizontal portion falls outside the space. The vertical portion is installed in the installation area at the lower part of the contact plate by screws, and a laterally extending block is provided on the upper side surface of the vertical portion, and the laterally extending block is kept facing the laterally extending portion of the printed circuit board head mounting member.

5. The soft-pack battery probe device according to claim 4, characterized in that: The springs are welded to the bottom plate, and the number of springs is 18 - 22.

6. A test system constructed by using a soft-pack battery probe device, characterized in that: It includes a test device for detecting the battery and several sets of the soft-pack battery probe devices described in any one of claims 1 to 5. Among them, the arrangements of the soft-pack battery probe devices are kept consistent, and the detection ends of the test device are electrically connected to the ear contact plate and the spring pressing plate of the soft-pack battery probe device respectively.

7. A method for testing a battery using the test system according to claim 6, comprising the following steps: 1) Move the tray with the battery installed to the designated area of the test device, keep the ears protruding, and the test preparation is in place; 2) The soft-pack battery probe device is in place, the probe device is started, the ear contact plate of one set of probes is under the ear at one end of the soft-pack battery, and the printed silicone plate of another set of adjacent soft-pack battery probe devices is above the ear at the same end of the soft-pack battery; 3) Adjust the position of the soft-pack battery probe device so that the ear contact plate and the printed silicone plate are in close contact with the ears respectively; 4) The battery test starts and the test is carried out until the test is completed.

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