A power connection device with a quick plug-in probe and a formation, distribution, charging and discharging machine

Abstract

This invention discloses a power-connecting device with quick-connect probes, comprising a pin plate mounting plate, a plurality of quick-connect probes, and a plurality of power-connecting pin plates. The quick-connect probes are detachably inserted into the power-connecting pin plates. Two power-connecting pin plates are spaced apart on the pin plate mounting plate, forming a power-connecting unit. Within the same power-connecting unit, one set of power-connecting pin plates is a positive pin plate, and the other set is a negative pin plate, with an operating area between the positive and negative pin plates. Each power-connecting pin plate includes a hollow shell and a voltage sampling PCB adapter board assembly and a current line terminal adapter assembly disposed inside the shell. The shell is mounted on the pin plate mounting plate and has an opening on its lower inner side. The voltage sampling PCB adapter board assembly and the current line terminal adapter assembly are disposed inside the shell. This invention also discloses a capacity-combining charging and discharging machine. The advantages of this invention are: it enables quick-connect probe insertion and removal, and the entire replacement process is short.

Description

Technical Field

[0001] This invention relates to the field of battery manufacturing technology, and in particular to a power connection device with quick-connect and disconnect probes and a charge / discharge machine. Background Technology

[0002] Existing prismatic lithium-ion battery formation, capacity testing, and charge / discharge machines often suffer from severe wear on the probes on their needle plate assemblies due to prolonged use, leading to excessive contact resistance or probe damage that renders them unusable. Therefore, periodic replacement of faulty probes is necessary. However, replacing probes typically requires disassembling the entire needle plate assembly containing the faulty probe, removing it from the charge / discharge machine, and then replacing the probe. This process involves not only removing the screws securing the probe holder but also removing the nuts securing the current and voltage lines on the probe's top, as well as the auxiliary voltage line soldered to the top of the voltage sampling probe. Replacing the probe with a new one requires re-stacking and soldering the cable terminals and securing the probe holder. The entire replacement process is time-consuming, labor-intensive, and inconvenient for maintenance. Therefore, it is necessary to develop a new type of quick-connect probe assembly to improve probe maintainability. Summary of the Invention

[0003] To address the aforementioned problems, this invention proposes a power connection device and a charge / discharge machine with a quick-plug probe.

[0004] The present invention provides a power receiving device with quick-plug probes, characterized in that it includes a pin plate mounting plate, a plurality of quick-plug probes, and a plurality of power receiving pin plates.

[0005] The quick-connect probe is detachably inserted into the electrode plate and includes a current sampling needle assembly, a voltage sampling needle assembly, and a current connector assembly. The current sampling needle assembly is rotatably inserted into the current connector assembly, and the voltage sampling needle assembly is inserted into the current sampling needle assembly. The current sampling needle assembly and the voltage sampling needle assembly are arranged coaxially. The current sampling needle assembly is connected to an external current wire connector via a flexible braided current wire. The external current wire connector is fixed to the sampling needle fixing assembly to enable the current sampling needle assembly to be inserted into the electrode plate. The voltage sampling needle assembly has a wire connector at its connection end to enable the voltage sampling needle assembly to be inserted into the electrode plate.

[0006] Two electrode plates are spaced apart on the electrode plate mounting plate to form an electrode unit. In the same electrode unit, one set of electrode plates is the positive electrode plate and the other set is the negative electrode plate. An operating area is left between the positive electrode plate and the negative electrode plate.

[0007] In each power-connecting unit, the direction closest to the operating area is defined as the inside, and the opposite direction is defined as the outside. The power-connecting pin plate includes a hollow housing and a voltage sampling PCB adapter board assembly and a current line terminal adapter assembly disposed inside the housing. The housing is disposed on the pin plate mounting plate. An opening is provided on the lower inside of the housing for quick-connect probes to pass through. The voltage sampling PCB adapter board assembly and the current line terminal adapter assembly are disposed inside the housing, and the voltage sampling PCB adapter board assembly and the current line terminal adapter assembly are directly opposite the opening, and are respectively used to connect with the wire end connector of the quick-connect probe and the external current line plug.

[0008] Preferably, the housing is a hollow cavity structure formed by a left sealing plate, a top plate, a probe mounting plate and a right sealing plate, with an opening at the bottom on the left sealing plate; the inner end of the probe mounting plate has a notch for inserting and quickly removing probes.

[0009] More preferably, positioning holes are provided on the opposite sides of the notch, which can cooperate with the positioning pins of the probe assembly mounting base to achieve positioning between the probe assembly mounting base and the probe mounting plate.

[0010] Preferably, the voltage sampling PCB adapter board assembly includes an adapter board mounting bracket and a voltage sampling PCB adapter board. The adapter board mounting bracket is fixed to the outer end of the probe mounting plate, and the voltage sampling PCB adapter board is fixed to the adapter board mounting bracket by PCB screws. A voltage sampling connector is provided on the voltage sampling PCB adapter board near the quick-connect probe. The voltage sampling pin assembly is connected to the voltage sampling connector through a wire-end connector to realize quick-connect and disconnection between the quick-connect probe and the voltage sampling connector.

[0011] Preferably, the current line terminal adapter assembly includes an adapter and a current busbar insert terminal. The adapter is fixed to the probe mounting plate, and the current busbar insert terminal is fixed to the adapter by insert terminal screws. The current busbar insert terminal has a plug-in end and a connection end. The plug-in end is provided with a current terminal plug interface that can be plugged into the external insert of the current probe. The connection end is connected to an L-shaped current terminal by a current terminal screw. The L-shaped current terminal is connected to an external current line to realize quick plugging and unplugging between the probe and the current busbar insert terminal.

[0012] Preferably, the current connector assembly includes an external current pin connector, a connector fixing screw, and a connector fixing seat. The bottom of the connector fixing seat has a current pin mounting through hole, and the inner wall of the current pin mounting through hole has several internal teeth along the circumferential direction. The top of the connector fixing seat has a threaded hole for fixing the external current pin connector, and positioning bosses are symmetrically provided on both sides of the threaded hole. The external current pin connector is fixedly installed on the top of the connector fixing seat by the connector fixing screw and positioned by the positioning bosses.

[0013] Preferably, the current sampling needle assembly includes a soft braided current wire, a probe assembly mounting base, a current needle terminal, a current needle compression spring, a current needle, a current needle intermediate spacer, a current needle end nut washer, and a current needle end nut.

[0014] The spacer sleeve of the current needle is made of elastic insulating plastic. The upper end of the spacer sleeve has several petal protrusions, and there is a groove between two adjacent petal protrusions. The probe seat pressure springs are successively sleeved on the outside of the spacer sleeve from top to bottom. The bottom abuts against the insert fixing seat, and the top is limited by the probe seat pressure spring pad and the petal protrusions.

[0015] The spacer sleeve of the current needle has an anti-rotation edge inside to prevent relative rotation between the current needle and the spacer sleeve;

[0016] The probe assembly mounting base is snapped into the notch of the probe mounting plate. The inner wall of the probe assembly mounting base is provided with an inner groove. The inner groove engages with the anti-rotation boss at the bottom of the current needle intermediate spacer sleeve to prevent relative rotation between the current needle intermediate spacer sleeve and the probe assembly mounting base, so as to realize the rotation limit of the current needle relative to the probe assembly mounting base.

[0017] The current needle is sequentially inserted from top to bottom into the current needle spacer sleeve and the probe assembly mounting base; the current needle has a central axial through hole along the axial direction, and the current needle terminal is installed at the upper end of the current needle through the current needle end nut and the current needle end nut washer. The current needle terminal is electrically connected to the current needle external plug through a flexible braided current wire; the lower part of the current needle is fitted with a current needle compression spring, the upper end of the current needle compression spring is connected to the probe assembly mounting base, and the lower end is connected to the lower end of the current needle.

[0018] Preferably, the probe assembly mounting base includes a mounting base neck and an end face disposed at the bottom of the mounting base neck. The mounting base neck is adapted to the notch of the probe mounting plate of the needle plate assembly, and the mounting base neck is engaged in the notch of the probe mounting plate.

[0019] Preferably, the end face is provided with an inner hole coaxial with the neck of the mounting seat, and the inner wall of the inner hole groove is provided with an inner hole groove; the upper surface of the end face is symmetrically provided with positioning pins for cooperating with the positioning holes of the probe mounting plate of the needle plate assembly; the lower surface of the end face is symmetrically provided with pull rings.

[0020] Preferably, the voltage sampling needle assembly includes a voltage sampling needle, a voltage needle top limiting sleeve, an upper insulating sleeve, a lower insulating sleeve, a middle insulating sleeve, and a voltage sampling needle compression spring; the upper, middle, and lower insulating sleeves are sequentially arranged from top to bottom in the central axial through hole of the current needle, and a voltage sampling needle compression spring is provided between the lower and middle insulating sleeves; the voltage sampling needle passes through the upper, middle, and lower insulating sleeves, and a movable gap is left between the voltage sampling needle and the upper, middle, and lower insulating sleeves; the upper end of the voltage sampling needle is connected to a voltage line, and the connection end of the voltage line is provided with a wire connector.

[0021] The present invention discloses a charge-discharge machine for forming and discharging, characterized in that it includes a power connection device with a quick-plug probe, a connecting column, and a motor frame. The power connection device is installed on the inner top of the motor frame through the connecting column and is used to charge and discharge a square lithium-ion battery placed inside the motor frame.

[0022] When installing the quick-connect probes, the operator first inserts the neck of the probe assembly mounting base into the notch of the probe mounting plate of the pin board assembly. The external current pin connector will then be inserted into the current terminal connector and further into the current bus connector terminal. Next, the operator uses their finger to engage the pull ring of the probe assembly mounting base and pulls it downwards until the upper surface of the locating pin is lower than the lower surface of the probe mounting plate of the pin board assembly. Finally, the operator pushes the probe assembly mounting base further inwards until it is fully in place, then releases the pull ring. The probe assembly mounting base retracts upwards, and the locating pin automatically inserts into the locating hole of the probe mounting plate of the pin board assembly. Next, the voltage line connector of the quick-connect probe assembly is inserted into the voltage sampling connector of the voltage sampling PCB adapter board assembly. The quick-connect probe assembly installation is now complete. Disassembly of the quick-connect probe assembly is performed by reversing the above procedure.

[0023] The beneficial effects of this invention are: operators do not need to disassemble and remove the needle plate assembly inside the charge / discharge machine to replace the probe; it can be directly removed from the side of the electrode plate. The entire replacement process is short, time-saving, and labor-saving, which is very beneficial for maintenance. Attached Figure Description

[0024] Figure 1 This is a structural diagram of the power connection device of the present invention (taking the dashed box at point A as an example, the box contains a power connection unit).

[0025] Figure 2 This is a structural diagram of the electrode plate of the present invention.

[0026] Figure 3This is a structural diagram of the voltage sampling PCB adapter board assembly of the present invention.

[0027] Figure 4 This is a structural diagram of the current line terminal adapter assembly of the present invention.

[0028] Figure 5 This is a structural diagram of the quick insertion / removal probe of the present invention.

[0029] Figure 6 This is a longitudinal sectional view of the quick insertion / removal probe of the present invention.

[0030] Figure 7 This is a structural diagram of the insert fixing base of the present invention.

[0031] Figure 8 This is a structural diagram of the spacer sleeve in the current needle of the present invention.

[0032] Figure 9 This is a structural diagram of the probe assembly mounting base of the present invention.

[0033] Figure 10 This is a structural diagram of the probe mounting plate of the present invention.

[0034] Figure 11 This is a schematic diagram of the quick-plug probe and probe mounting plate of the present invention.

[0035] Figure 12 This is a structural diagram of the charger / discharger of the present invention. Detailed Implementation

[0036] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.

[0037] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0038] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to 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 invention.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0040] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0041] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0042] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0043] The present invention will now be described in detail with reference to the accompanying drawings and exemplary embodiments.

[0044] like Figure 1 As shown, the present invention provides a power receiving device 100 with quick-plug probes, which includes a pin plate mounting plate 2, a plurality of quick-plug probes 3 and a plurality of power receiving pin plates 6.

[0045] The quick-connect probe 3 is detachably connected to the electrode plate 6 and includes a current sampling needle assembly 300, a voltage sampling needle assembly 320, and a current connection assembly 330. The current sampling needle assembly 300 is rotatably inserted into the current connection assembly 330, and the voltage sampling needle assembly 320 is inserted into the current sampling needle assembly 300. The current sampling needle assembly 300 and the voltage sampling needle assembly 320 are arranged coaxially. The current sampling needle assembly 300 is connected to an external current line connector 302 via a flexible braided current line 301. The external current line connector 302 is fixed to the sampling needle fixing assembly 300 to enable the current sampling needle assembly 300 to be connected to the electrode plate 6. The connection end of the voltage sampling needle assembly 320 is provided with a wire connector to enable the voltage sampling needle assembly 320 to be connected to the electrode plate 6.

[0046] Two electrode plates 6 are spaced apart on the electrode plate mounting plate 2 to form an electrode unit. In the same electrode unit, one set of electrode plates 6 is the positive electrode plate 6a and the other set of electrode plates 6 is the negative electrode plate 6b. An operating area 5 is left between the positive electrode plate 6a and the negative electrode plate 6b. The operator can directly reach into the operating area 5 between the positive electrode plate 6a and the negative electrode plate 6b to remove the quick-release probe 3 from the positive electrode plate 6a or the negative electrode plate 6b from the inside to the outside.

[0047] In each power-connecting unit, the direction closest to the operating area 5 is defined as the inner side, and the opposite direction is defined as the outer side. The power-connecting pin plate 6 includes a hollow housing 60 and a voltage sampling PCB adapter board assembly 64 and a current line terminal adapter assembly 65 disposed inside the housing 60. The housing 60 is disposed on the pin plate mounting plate 2. An opening 611 for quick-connect probe 3 to pass through is provided on the lower inner side of the housing 60. The voltage sampling PCB adapter board assembly 64 and the current line terminal adapter assembly 65 are disposed inside the housing 60 and are directly opposite the opening 611. They are used to connect with the wire end connector and the current line external plug 302 of the quick-connect probe 3, respectively. The quick-connect probe 3 realizes the quick connection function of the battery voltage interface and the current interface through the voltage sampling PCB adapter board assembly 64 and the current line terminal adapter assembly 65, respectively.

[0048] like Figure 2 As shown, the housing 60 is a hollow cavity structure formed by the left sealing plate 61, the top plate 62, the probe mounting plate 63 and the right sealing plate 66. The left sealing plate 61 is provided with an opening 611 with an open bottom. The inner end of the probe mounting plate 63 is provided with a notch 632 for inserting the quick-release probe 3. When it is necessary to replace the quick-release probe 3, the quick-release probe 3 can be taken out from the opening 611 or inserted into the notch 632.

[0049] like Figure 2 As shown, notch 632 is a rectangular notch, and the opening of notch 632 faces the operating area 5. Positioning holes 631 are provided on opposite sides of notch 632, which can cooperate with the positioning pins of the probe assembly mounting base to realize the positioning between the probe assembly mounting base and the probe mounting plate, facilitating quick insertion and removal of the probe 3 for fixation.

[0050] like Figure 3 As shown, the voltage sampling PCB adapter board assembly 64 includes an adapter board mounting bracket 641 and a voltage sampling PCB adapter board 642. The adapter board mounting bracket 641 is fixed to the outer end of the probe mounting plate 63, and the voltage sampling PCB adapter board 642 is fixed to the adapter board mounting bracket 641 by PCB screws 644. A voltage sampling connector 643 is provided on the voltage sampling PCB adapter board 642 near the quick-connect probe 3. The voltage sampling pin assembly 320 is connected to the voltage sampling connector 643 through a wire end connector to realize the quick-connect and disconnect function between the quick-connect probe 3 and the voltage sampling connector 643.

[0051] like Figure 4 As shown, the current line terminal adapter assembly 65 includes an adapter 651 and a current busbar insert terminal 652. The adapter 651 is fixed on the probe mounting plate 63, and the current busbar insert terminal 652 is fixed on the adapter 651 by insert terminal screws 653. The current busbar insert terminal 652 has a plug-in end and a connection end. The plug-in end is provided with a current terminal plug interface 6521 that can be plugged into the external insert 302 of the current probe. The connection end is connected to an L-shaped current terminal 655 by a current terminal screw 654. The L-shaped current terminal 655 is connected to an external current line 656 to realize the quick plug-in and quick unplugging function between the probe 3 and the current busbar insert terminal 652.

[0052] like Figure 6 As shown, the current connector assembly 330 includes an external current pin connector 302, a connector fixing screw 303, and a connector fixing seat 304. The bottom of the connector fixing seat 304 is provided with a current pin mounting through hole 3044, and the inner wall of the current pin mounting through hole 3044 is provided with several internal teeth 3042 along the circumferential direction. The top of the connector fixing seat 304 is provided with a threaded hole 3043 for fixing the external current pin connector 302, and positioning bosses 3041 are symmetrically provided on both sides of the threaded hole 3043. The external current pin connector 302 is fixedly installed on the top of the connector fixing seat 304 by the connector fixing screw 303 and positioned by the positioning bosses 3041.

[0053] In some embodiments of the present invention, the insert fixing base 304 includes an integrally formed support bottom 3045 and a side connecting part 3046, the support bottom 3045 and the side connecting part 3046 are connected in an L-shape, the support bottom 3045 is provided with a current needle mounting through hole 3044; the top of the side connecting part 3046 is provided with a threaded hole 3043.

[0054] In some embodiments of the present invention, the internal teeth 3042 are rectangular teeth, evenly spaced on the inner wall of the current needle mounting through hole 3044. In the present invention, the number of internal teeth 3042 is four.

[0055] like Figure 7 As shown, the current sampling needle assembly 300 includes a soft braided current wire 301, a probe assembly mounting base 306, a current needle terminal 308, a current needle compression spring 310, a current needle 311, a current needle intermediate spacer sleeve 317, a current needle end nut washer 318, and a current needle end nut 319.

[0056] The current needle spacer sleeve 317 is made of elastic insulating plastic. The upper end of the current needle spacer sleeve 317 has four petal protrusions 3174. The petal protrusions 3174 are elastic, and there is a groove 3173 between two adjacent petal protrusions 3174. The probe seat pressure spring 305 is sequentially sleeved on the outside of the current needle spacer sleeve 317 from top to bottom. The bottom abuts against the insert fixing seat 304, and the top is limited by the probe seat pressure spring pad 309 and the petal protrusions 3174. The probe seat pressure spring 305 and the probe seat pressure spring pad 309 can be sleeved on the outside of the current needle spacer sleeve 3177 from above the petal protrusions 3174. After being fully sleeved, the petal protrusions 3174 return to their original positions, thereby achieving the upper limit of the probe seat pressure spring 305 and the probe seat pressure spring pad 309.

[0057] The spacer sleeve 317 of the current needle has an anti-rotation edge 3172 inside to prevent relative rotation between the current needle 311 and the spacer sleeve 317 of the current needle;

[0058] The probe assembly mounting base 306 is inserted into the notch of the probe mounting plate 63. The inner wall of the probe assembly mounting base 306 is provided with an inner groove 3064. The inner groove 3064 engages with the anti-rotation boss 3171 at the bottom of the current needle intermediate spacer sleeve 317 to prevent relative rotation between the current needle intermediate spacer sleeve 317 and the probe assembly mounting base 306, so as to realize the rotation limit of the current needle 311 relative to the probe assembly mounting base 306.

[0059] The current needle 311 is sequentially inserted from top to bottom into the current needle intermediate spacer sleeve 317 and the probe assembly mounting base 306. The current needle 311 has a central axial through hole along the axial direction. The upper end of the current needle 311 is fitted with a current needle terminal 308 through a current needle end nut 319 and a current needle end nut washer 318. The current needle terminal 308 is electrically connected to the current needle external plug 302 through a flexible braided current wire 301. The lower part of the current needle 311 is fitted with a current needle compression spring 310. The upper end of the current needle compression spring 310 is connected to the probe assembly mounting base 306, and the lower end is connected to the lower end of the current needle 311.

[0060] like Figure 8 and Figure 9 As shown, the probe assembly mounting base 306 includes a mounting base neck 3062 and an end face 3065 disposed at the bottom of the mounting base neck 3062. The mounting base neck 3062 has a cylindrical structure and is adapted to the notch 632 of the probe mounting plate 63 of the needle plate assembly. The mounting base neck 3062 can be conveniently laterally guided into the notch 632 of the probe mounting plate 63 during quick insertion and removal of the probe 3.

[0061] In some embodiments of the present invention, the end face 3065 is provided with an inner hole coaxial with the neck 3062 of the mounting base, and the inner wall of the inner hole groove 3064 is provided with an inner hole groove 3064; the upper surface of the end face 3065 is symmetrically provided with positioning pins 3063 for cooperating with the positioning hole 631 of the probe mounting plate 63 of the needle plate assembly to realize the positioning of the probe 3 and the probe mounting plate 63 of the needle plate assembly for quick insertion and removal; the lower surface of the end face 3065 is symmetrically provided with pull rings 3061. The operator inserts his finger into the pull ring 3061 and pulls it down forcefully to disengage the two positioning pins 3063 of the probe assembly mounting base 306 from the positioning hole 631 of the probe mounting plate 63 of the needle plate assembly, and then pulls them out laterally from the opening 611 of the left sealing plate 61.

[0062] In some embodiments of the present invention, the voltage sampling needle assembly 320 includes a voltage sampling needle 307, a voltage needle top limiting sleeve 312, an upper insulating sleeve 313, a lower insulating sleeve 314, a middle insulating sleeve 315, and a voltage sampling needle compression spring 316; the upper insulating sleeve 313, the middle insulating sleeve 315, and the lower insulating sleeve 314 are sequentially arranged from top to bottom in the central axial through hole of the current needle 311, and the lower insulating sleeve 314 is connected to the voltage... A voltage sampling needle compression spring 316 is provided between the insulating sleeves 315 in the sampling needle; the voltage sampling needle 307 passes through the upper insulating sleeve 313, the middle insulating sleeve 315, and the lower insulating sleeve 31 of the voltage sampling needle, and there is a movable gap between the voltage sampling needle 307 and the upper insulating sleeve 313, the middle insulating sleeve 315, and the lower insulating sleeve 31 of the voltage sampling needle to facilitate the up and down movement of the voltage sampling needle 307; the upper end of the voltage sampling needle 307 is connected to a voltage line, and the connection end of the voltage line is provided with a wire connector.

[0063] The present invention provides a charge-discharge machine for forming and discharging batteries, comprising a power connection device 100 with quick-plug probes, a connecting column 4, and a motor frame 1. The power connection device 100 is installed on the inner top of the motor frame 1 via the connecting column 4 and is used to charge and discharge a square lithium-ion battery placed inside the motor frame 1.

[0064] like Figure 10 As shown, when installing the quick-connect probe 3, the operator first inserts the neck 3062 of the probe assembly mounting base 306 into the notch of the probe mounting plate 63 of the pin board assembly. The external current pin connector 302 will then be inserted into the current terminal connector 6521 and further inserted into the current bus connector terminal 652. Then, the operator uses their finger to engage the pull ring 3061 of the probe assembly mounting base 306 and pulls the probe assembly mounting base 306 downwards until the upper surface of the positioning pin 3063 is lower than the lower surface of the probe mounting plate 63 of the pin board assembly. Finally, the operator pushes the probe assembly mounting base 306 further inwards until it is fully in place, then releases the pull ring 3061. The probe assembly mounting base 306 retracts upwards, and the positioning pin 3063 of the probe assembly mounting base 306 automatically inserts into the positioning hole 631 of the probe mounting plate 63 of the pin board assembly. Additionally, the voltage line connector of the quick-connect probe assembly 3 is then inserted into the voltage sampling connector 643 of the voltage sampling PCB adapter board assembly 64. At this point, the quick-connect probe assembly 3 is installed. To disassemble the quick-connect probe assembly 3, simply reverse the above procedure.

[0065] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A power connection device (100) with a quick plug-in probe, characterized in that: It includes a needle plate mounting plate (2), several quick-plug probes (3) and several electrical contact pin plates (6); The quick-connect probe (3) is detachably connected to the electrode plate (6) and includes a current sampling needle assembly (300), a voltage sampling needle assembly (320), and a current connector assembly (330). The current sampling needle assembly (300) is rotatably inserted into the current connector assembly (330), and the voltage sampling needle assembly (320) is inserted into the current sampling needle assembly (300). The current sampling needle assembly (300) and the voltage sampling needle assembly (320) are arranged coaxially. The current sampling needle assembly (300) includes a soft braided current wire (301), a probe assembly mounting base (306), and a current needle terminal (308). The components include: a current needle compression spring (310), a current needle (311), a current needle intermediate spacer sleeve (317), a current needle end nut washer (318), and a current needle end nut (319); the current sampling needle assembly (300) is connected to the current wire external plug (302) through a soft braided current wire (301), and the current wire external plug (302) is fixed on the sampling needle fixing assembly (300) to realize the insertion of the current sampling needle assembly (300) and the receiving needle plate (6); the voltage sampling needle assembly (320) is provided with a wire end connector at the connection end to realize the insertion of the voltage sampling needle assembly (320) and the receiving needle plate (6); Two electrical contact plates (6) are spaced apart on the needle plate mounting plate (2) to form a power contact unit. In the same power contact unit, one set of electrical contact plates (6) is the positive electrode plate (6a) and the other set of electrical contact plates (6) is the negative electrode plate (6b). An operating area (5) is left between the positive electrode plate (6a) and the negative electrode plate (6b). In each power-connecting unit, the direction closest to the operating area (5) is defined as the inside, and the opposite direction as the outside. The power-connecting pin plate (6) includes a hollow housing (60) and a voltage sampling PCB adapter board assembly (64) and a current line terminal adapter assembly (65) disposed inside the housing (60). The housing (60) is disposed on the pin plate mounting plate (2). An opening (611) for quick insertion and removal of the probe (3) is provided on the lower inside of the housing (60). The voltage sampling PCB adapter board assembly (64) The voltage sampling PCB adapter board assembly (64) and the current line terminal adapter assembly (65) are located inside the housing (60), and the voltage sampling PCB adapter board assembly (64) and the current line terminal adapter assembly (65) are directly opposite the opening (611), respectively used to connect with the wire end connector of the quick-connect probe (3) and the external current line plug (302); the housing (60) is a hollow cavity structure formed by the left sealing plate (61), the top plate (62), the probe mounting plate (63) and the right sealing plate (66); The probe assembly mounting base (306) includes a mounting base neck (3062) and an end face (3065) disposed at the bottom of the mounting base neck (3062). The mounting base neck (3062) is adapted to the notch (632) of the probe mounting plate (63) of the needle plate assembly, and the mounting base neck (3062) is inserted into the notch (632) of the probe mounting plate (63). The end face (3065) is provided with an inner hole coaxial with the neck (3062) of the mounting base, and the inner hole wall of the probe assembly mounting base (306) is provided with an inner hole groove (3064); the upper surface of the end face (3065) is symmetrically provided with positioning pins (3063) for cooperating with the positioning hole (631) of the probe mounting plate (63) of the needle plate assembly; the lower surface of the end face (3065) is symmetrically provided with pull rings (3061).

2. The power connection device with quick plug-in probe according to claim 1, characterized in that: The left sealing plate (61) has an opening (611) with a bottom opening; the inner end of the probe mounting plate (63) has a notch (632) for inserting and removing the quick-release probe (3).

3. The power connection device with quick-plug probe as described in claim 2, characterized in that: The voltage sampling PCB adapter board assembly (64) includes an adapter board mounting bracket (641) and a voltage sampling PCB adapter board (642). The adapter board mounting bracket (641) is fixed to the outer end of the probe mounting plate (63), and the voltage sampling PCB adapter board (642) is fixed to the adapter board mounting bracket (641) by PCB screws (644). A voltage sampling connector (643) is provided on the voltage sampling PCB adapter board (642) near the quick-plug probe (3). The voltage sampling connector (643) is electrically connected to the external voltage line. The voltage sampling pin assembly (320) is plugged into the voltage interface of the voltage sampling connector (643) through the line end connector to realize quick plugging and unplugging between the quick-plug probe (3) and the voltage sampling connector (643).

4. The power connection device with quick-plug probe as described in claim 3, characterized in that: The current line terminal adapter assembly (65) includes an adapter (651) and a current bus plug terminal (652). The adapter (651) is fixed on the probe mounting plate (63). The current bus plug terminal (652) is fixed on the adapter (651) by a plug terminal screw (653). The current bus plug terminal (652) has a plug end and a connection end. The plug end is provided with a current terminal plug interface (6521) that can be plugged into the external plug (302) of the current probe. The connection end is connected to an L-shaped current terminal (655) by a current terminal screw (654). The L-shaped current terminal (655) is connected to an external current line (656) to realize quick plugging and unplugging between the probe (3) and the current bus plug terminal (652).

5. A power connection device with a quick-plug probe as described in claim 4, characterized in that: The current connector assembly (330) includes an external current pin connector (302), a connector fixing screw (303), and a connector fixing seat (304). The bottom of the connector fixing seat (304) is provided with a current pin mounting through hole (3044), and the inner wall of the current pin mounting through hole (3044) is provided with several internal teeth (3042) along the circumferential direction. The top of the connector fixing seat (304) is provided with a threaded hole (3043) for fixing the external current pin connector (302), and positioning bosses (3041) are symmetrically provided on both sides of the threaded hole (3043). The external current pin connector (302) is fixedly installed on the top of the connector fixing seat (304) by the connector fixing screw (303) and positioned by the positioning bosses (3041).

6. The power connection device with quick-plug probe as described in claim 4, characterized in that: The current needle spacer sleeve (317) is made of elastic insulating plastic material. The upper end of the current needle spacer sleeve (317) is provided with several petal protrusions (3174), and a groove (3173) is provided between two adjacent petal protrusions (3174). The probe seat pressure spring (305) is successively sleeved on the outside of the current needle spacer sleeve (317) from top to bottom. The bottom abuts against the insert fixing seat (304), and the top is limited by the probe seat pressure spring pad (309) and the petal protrusions (3174). The spacer sleeve (317) of the current needle is provided with an anti-rotation edge (3172) to prevent relative rotation between the current needle (311) and the spacer sleeve (317); The probe assembly mounting base (306) is inserted into the notch of the probe mounting plate (63). The inner wall of the probe assembly mounting base (306) is provided with an inner hole groove (3064). The inner hole groove (3064) engages with the anti-rotation boss (3171) at the bottom of the current needle intermediate spacer sleeve (317) to prevent relative rotation between the current needle intermediate spacer sleeve (317) and the probe assembly mounting base (306), so as to realize the rotation limit of the current needle (311) relative to the probe assembly mounting base (306). The current needle (311) is sequentially inserted from top to bottom into the current needle intermediate spacer sleeve (317) and the probe assembly mounting base (306); the current needle (311) has a central axial through hole along the axial direction; the upper end of the current needle (311) is fitted with a current needle terminal (308) through a current needle end nut (319) and a current needle end nut washer (318); the current needle terminal (308) is electrically connected to the current needle external plug (302) through a soft braided current wire (301); the lower part of the current needle (311) is fitted with a current needle compression spring (310); the upper end of the current needle compression spring (310) is connected to the probe assembly mounting base (306), and the lower end is connected to the lower end of the current needle (311).

7. A power connection device with a quick-plug probe as described in claim 6, characterized in that: The voltage sampling needle assembly (320) includes a voltage sampling needle (307), a voltage needle top limiting sleeve (312), an upper insulating sleeve (313), a lower insulating sleeve (314), a middle insulating sleeve (315), and a voltage sampling needle compression spring (316). The upper insulating sleeve (313), the middle insulating sleeve (315), and the lower insulating sleeve (314) are sequentially arranged from top to bottom in the central axial through hole of the current needle (311), and a voltage sampling needle compression spring is provided between the lower insulating sleeve (314) and the middle insulating sleeve (315). A compression spring (316); a voltage sampling needle (307) is inserted into the upper insulating sleeve (313), the middle insulating sleeve (315), and the lower insulating sleeve (314) of the voltage sampling needle, and there is a movable gap between the voltage sampling needle (307) and the upper insulating sleeve (313), the middle insulating sleeve (315), and the lower insulating sleeve (314); the two ends of the voltage sampling needle (307) are fixed by the upper insulating sleeve (313) and the lower insulating sleeve (314) of the voltage sampling needle, respectively; the upper end of the voltage sampling needle (307) is connected to a voltage line, and the connection end of the voltage line is provided with a wire connector.

8. A type of capacity-setting charge-discharge machine, characterized in that: The device includes a power connection device (100) with a quick-plug probe as described in any one of claims 1 to 7, a connecting column (4), and a motor frame (1). The power connection device (100) is installed on the inner top of the motor frame (1) via the connecting column (4) and is used to charge and discharge a square lithium-ion battery placed inside the motor frame (1).

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