Battery PACK connection system

Abstract

The invention provides a battery PACK connection system. The battery PACK connection system comprises a box body, a main connector and an auxiliary connector, a battery main body is arranged in the box body; the main connector comprises a male-end connector, a female-end connector and a cable for connecting the male-end connector and the female-end connector, and one of the male-end connector and the female-end connector is connected with the battery main body; the auxiliary connectors are electrically connected with the corresponding male end connectors or female end connectors; wherein one of the male end connector and the female end connector is a floatable connector and comprises a connector main body which is assembled on the box body and is arranged at an interval with the box body and an elastic piece of which one end is connected with the connector main body and the other end extends towards the box body; and the connector main body can float relative to the box body under the elastic action of the elastic piece. Compared with the prior art, the battery PACK connection system can realize quick connection and quick disassembly between the box bodies, is convenient to store and replace, and can keep the appearance of a plurality of box bodies clean and tidy.

Description

Technical Field

[0001] The invention relates to a battery PACK connection system, belonging to the technical field of connection devices. Background Art

[0002] Battery PACK refers to the packaging, encapsulation or assembly of multiple batteries. In the market, PACK boxes are usually used to store batteries. The number of batteries is increased by stacking multiple PACK boxes, and multiple batteries are connected in series or in parallel to meet the requirements of different power sources. However, due to the complex combined installation structure of battery PACK, the connection and disassembly between PACK boxes is time-consuming and labor-intensive, and is not conducive to storage and replacement.

[0003] In view of this, it is indeed necessary to improve the existing battery PACK connection system to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a battery PACK connection system to achieve quick connection and quick disassembly between boxes.

[0005] To achieve the above object, the present invention provides a battery PACK connection system, comprising: A box body, in which a battery body is arranged; A main connector, comprising a male connector, a female connector and a cable connecting the male connector and the female connector, wherein the male connector and the female connector are respectively mounted on opposite sides of the box, and one of the male connector and the female connector is connected to the battery body; and An auxiliary connector, electrically connected to the corresponding male connector or the female connector; Among them, one of the male connector and the female connector is a floating connector, including a connector body and an elastic member, the connector body is assembled on the box body and spaced apart from the box body, a limiting column is provided at one end of the elastic member, and the connector body is correspondingly provided with a through hole for the limiting column to pass through, so that one end of the elastic member is connected to the connector body, and the other end of the elastic member extends toward the box body, and the connector body can float relative to the box body under the elastic action of the elastic member; there are multiple boxes, and two adjacent boxes are stacked on each other and electrically connected to the corresponding female connectors on the adjacent boxes through the male connector to form a battery cluster.

[0006] As a further improvement of the present invention, the male connector is arranged at the top of the box, and the female connector is arranged at the bottom of the box.

[0007] As a further improvement of the present invention, the male connector portion is exposed outside the box, and the female connector portion is exposed outside the box.

[0008] As a further improvement of the present invention, the connector body is provided with a first limiting hole for the fastener to pass through, and the box body is correspondingly provided with a second limiting hole for the fastener to pass through, and the inner diameter of the first limiting hole is larger than the inner diameter of the second limiting hole, so that the connector body can float in position along the first limiting hole.

[0009] As a further improvement of the present invention, a step portion is provided in the first limiting hole so that the inner diameter of the first limiting hole away from the box body is smaller than the inner diameter of the first limiting hole close to the box body, and the through hole is opened on the step portion.

[0010] As a further improvement of the present invention, the elastic member is arranged in a conical shape, and the elastic member is at least partially accommodated in the first limiting hole, and the two ends of the elastic member are respectively adapted to the apertures of the first limiting hole and the second limiting hole.

[0011] As a further improvement of the present invention, the auxiliary connector includes a wired female connector electrically connected to the male connector at the top of the battery cluster to perform power connection and signal connection.

[0012] As a further improvement of the present invention, the auxiliary connector further comprises a wired male connector electrically connected to the female connector at the bottom end of the battery cluster, and the wired male connector is used to connect to another battery cluster.

[0013] As a further improvement of the present invention, the auxiliary connector also includes a series connector electrically connected to the female connector at the bottom end of the battery cluster, and the series connector is used to connect multiple battery bodies in the battery cluster in series. A circuit board is provided in the series connector, and a terminal resistor is provided on the circuit board.

[0014] As a further improvement of the present invention, the auxiliary connector also includes a parallel connector electrically connected to the female connector at the bottom end of the battery cluster, and the parallel connector is used to connect multiple battery bodies in the battery cluster in parallel. A circuit board is provided in the parallel connector, and a terminal resistor is provided on the circuit board.

[0015] The beneficial effects of the present invention are as follows: the battery PACK connection system of the present invention connects one of the male connector and the female connector to the battery body in the box, and connects the male connector and the female connector through a cable, so that when there are multiple boxes, two adjacent boxes can be stacked on each other and electrically connected to the corresponding female connector on the adjacent box through the male connector to form a battery cluster; in addition, by setting one of the male connector and the female connector as a floating connector, stacking installation between boxes is facilitated. Compared with the prior art, the battery PACK connection system of the present invention can realize quick connection and quick disassembly between boxes, which is not only convenient for storage and replacement, but also keeps the appearance of multiple boxes neat. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the battery PACK connection system of the present invention.

[0017] Figure 2 yes Figure 1 Exploded diagram.

[0018] Figure 3 yes Figure 2 Assembly drawing of the middle box and main connector.

[0019] Figure 4 yes Figure 3 Cross-sectional view of .

[0020] Figure 5 yes Figure 3 Schematic diagram of the three-dimensional structure of the middle box.

[0021] Figure 6 yes Figure 3 Schematic diagram of the three-dimensional structure of the middle box from another angle.

[0022] Figure 7 yes Figure 3 Schematic diagram of the three-dimensional structure of the main connector.

[0023] Figure 8 yes Figure 7 Schematic diagram of the three-dimensional structure of the middle male end connector.

[0024] Fig. 9 yes Figure 7 Schematic diagram of the three-dimensional structure of the middle female connector.

[0025] Fig.10 yes Figure 7 Another perspective diagram of the three-dimensional structure of the middle female connector.

[0026] Fig.11 yes Fig. 9 Exploded diagram.

[0027] Fig.12 yes Fig.11 Schematic diagram of the three-dimensional structure of the connector body.

[0028] Fig.13 yes Fig.11 Schematic diagram of the three-dimensional structure of the flexible part.

[0029] Fig.14 yes Fig.11 Schematic diagram of the three-dimensional structure of the flexible part from another angle.

[0030] Fig.15 yes Fig.11 Schematic diagram of the three-dimensional structure of the elastic part.

[0031] Fig.16 yes Fig.11 Schematic diagram of the three-dimensional structure of the fastener.

[0032] Fig.17 yes Figure 2 Schematic diagram of the three-dimensional structure of the wired female connector.

[0033] Fig.18 yes Figure 2 A schematic diagram of the three-dimensional structure of a wired male connector.

[0034] Fig.19 yes Fig.18 Exploded diagram.

[0035] Fig. 20 yes Fig.19 Assembly drawing of the middle docking part and the grounding structure.

[0036] Fig.21 yes Fig.19 Assembly drawing of the pins, grounding structure and shell.

[0037] Fig. 22 yes Fig.19 Schematic diagram of the three-dimensional structure of the embedded nut.

[0038] Fig.23 yes Figure 2 Schematic diagram of the three-dimensional structure of the series connector.

[0039] Fig.24 yes Figure 2 Schematic diagram of the three-dimensional structure of the parallel connector.

[0040] Fig.25 yes Fig.23 and Fig.24 Schematic diagram of the three-dimensional structure of the circuit board.

[0041] Fig.26 2 is a schematic diagram of the three-dimensional structure of a series connector in another embodiment.

[0042] Fig. 27 2 is a schematic diagram of the three-dimensional structure of a parallel connector in another embodiment. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0044] See also Figure 1-Figure 2 As shown, the present invention discloses a battery PACK connection system 100, comprising a box 1, a main connector 2 mounted on the box 1, and an auxiliary connector 3 electrically connected to the main connector 2. The box 1 is provided with a plurality of boxes, and two adjacent boxes 1 are stacked on each other and connected through the main connector 2. The battery PACK connection system 100 of the present invention can realize quick connection and quick disassembly between boxes 1, which is convenient for storage and replacement.

[0045] Combination Figure 3-Figure 11 As shown, in this embodiment, the box body 1 is rectangular and hollow. Of course, in other optional embodiments, the box body 1 can also be cylindrical, etc., which is not limited to this.

[0046] A battery body (not shown) is provided inside the box 1, and the positive and negative electrodes of the battery body are connected to the main connector 2 through the electrode cable 7. Preferably, the box 1 has a first side wall 11 and a second side wall 12 arranged opposite to each other, the first side wall 11 is provided with a first mounting hole 111, the second side wall 12 is provided with a second mounting hole 121, and the first mounting hole 111 and the second mounting hole 121 are coaxially arranged. The second side wall 12 is the bottom wall of the box 1, and the second side wall 12 is recessed toward the inside of the box 1 as a whole, so that the box 1 forms a frame 13 on the outside of the second side wall 12, and the frame 13 and the second side wall 12 are surrounded to form a receiving space 130. When two adjacent boxes 1 are stacked on each other, the frame 13 of the box 1 located on the upper side is supported on the first side wall 11 of the box 1 located on the lower side.

[0047] The main connector 2 includes a male connector 21 installed in the first mounting hole 111, a female connector 22 installed in the second mounting hole 121, and a cable 23 connecting the male connector 21 and the female connector 22. One of the male connector 21 and the female connector 22 is connected to the battery body. Preferably, the female connector 22 is arranged at the bottom of the box 1. When two adjacent boxes 1 are stacked on each other, the male connector 21 is electrically connected to the corresponding female connector 22 on the adjacent box 1 to form a battery cluster.

[0048] At least one of the male connector 21 and the female connector 22 is partially exposed from the corresponding mounting hole. That is, the first mode is: the male connector 21 is partially exposed from the first mounting hole 111, and the female connector 22 is accommodated in the second mounting hole 121 and the box body 1; the second mode is: the male connector 21 is accommodated in the first mounting hole 111 and the box body 1, and the female connector 22 is partially exposed from the second mounting hole 121; the third mode is: the male connector 21 is partially exposed from the first mounting hole 111, and the female connector 22 is also partially exposed from the second mounting hole 121.

[0049] In this embodiment, the male connector 21 is partially exposed from the first mounting hole 111 , and the female connector 22 is partially exposed from the second mounting hole 121 and is located in the receiving space 130 .

[0050] One of the male connector 21 and the female connector 22 is a floating connector, that is, one of the male connector 21 and the female connector 22 is connected to the box body 1 in a floating manner. In this embodiment, the female connector 22 is connected to the box body 1 in a floating manner, and the male connector 21 is fixedly connected to the box body 1. Of course, in other optional embodiments, it can also be arranged that the male connector 21 is connected to the box body 1 in a floating manner, and the female connector 22 is fixedly connected to the box body 1, and there is no limitation on this.

[0051] By arranging the female connector 22 or the male connector 21 to be floatingly connected to the box body 1, the male connector 21 can be electrically connected to the corresponding female connector 22 on the adjacent box body 1 while allowing position deviation, making the plugging of the male connector 21 and the corresponding female connector 22 simpler and more convenient.

[0052] Specifically, the cross-sectional area of ​​the first mounting hole 111 is smaller than the cross-sectional area of ​​the second mounting hole 121, so that when the main connector 2 is installed, the main connector 2 can enter the box 1 from the second mounting hole 121 as a whole, until the male connector 21 partially passes through the first mounting hole 111 and abuts against the inner wall of the box 1, and the female connector 22 partially passes through the second mounting hole 121 and abuts against the outer wall of the box 1. Preferably, the outer periphery of the male connector 21 is provided with a protruding first mounting portion 211, and the first mounting portion 211 abuts against the inner wall of the box 1; the outer periphery of the female connector 22 is provided with a protruding second mounting portion 221, and the second mounting portion 221 is located on the outer side of the box 1 and abuts against the outer wall of the box 1; the first mounting portion 211 and the second mounting portion 221 can both allow the fastener 8 to pass through to install the male connector 21 and the female connector 22 on the box 1.

[0053] like Figure 9-11 As shown, in this embodiment, the female connector 22 is preferably a floating connector, including a connector body 220 and an elastic member 223. The connector body 220 is assembled on the box body 1 and is spaced apart from the box body 1. One end of the elastic member 223 is connected to the connector body 220, and the other end of the elastic member 223 extends toward the box body 1. The connector body 220 can float relative to the box body 1 under the elastic action of the elastic member 223.

[0054] The female connector 22 is preferably a floating connector, and further comprises a flexible member 222. One side of the flexible member 222 is fixedly engaged with the connector body 220, and the other side is in close contact with the box body 1.

[0055] Specifically, the second mounting portion 221 is arranged on the outer periphery of the connector body 220, and the flexible member 222 and the elastic member 223 are both assembled between the second mounting portion 221 and the box body 1. The second mounting portion 221 is also spaced apart from the box body 1. The flexible member 222 is arranged in an annular shape, and one side of the flexible member 222 is clamped and fixed with the second mounting portion 221, and the other side is in close contact with the outer wall of the box body 1. In this embodiment, the flexible member 222 is preferably a rubber sealing ring with a deformation space, so that the rubber sealing ring not only helps the female connector 22 to float relative to the box body 1, but also plays a role in sealing and waterproofing.

[0056] Combination Figure 12-Figure 15As shown, the flexible member 222 is provided with a first protruding portion 2221 protruding toward one side of the second mounting portion 221 and a second protruding portion 2222 protruding toward one side of the box body 1, and the second mounting portion 221 is correspondingly provided with a first receiving groove 2212 for receiving the first protruding portion 2221, and the second protruding portion 2222 is in close contact with the outer surface of the box body 1. The first protruding portion 2221 is arranged in an annular shape, and the flexible member 222 is further provided with a positioning boss 2223 located outside the first protruding portion 2221, and the second mounting portion 221 is correspondingly provided with a positioning groove 2213 for the positioning boss 2223 to extend into. There are two positioning bosses 2223, which are respectively located at opposite ends of the flexible member 222, and the positioning bosses 2223 extend into the positioning groove 2213 to limit the rotation of the connector body 220 on the horizontal plane. Specifically, by introducing three-dimensional coordinates, defining the x-axis as the horizontal axis, the y-axis as the longitudinal axis, and the z-axis as the vertical axis, the connector body 220 can slightly rotate toward the plane formed by the x-axis and the z-axis and the plane formed by the y-axis and the z-axis. The rotation angle is preferably 2-3°, that is, when the female connector 22 is connected to the corresponding male connector 21, there is a position deviation of 2-3°.

[0057] The second protrusion 2222 is arranged in a ring shape. The second protrusion 2222 includes an active rib 2224 extending toward the box body 1 and a contact head 2225 located at one end of the active rib 2224 close to the box body 1. The contact head 2225 is kept in close contact with the box body 1, and the active rib 2224 makes the connector body 220 and the box body 1 spaced apart, that is, the active rib 2224 is in the gap between the connector body 220 and the box body 1. In this embodiment, when the position of the connector body 220 floats, the contact head 2225 always abuts against the box body 1 and keeps the position unchanged. The active rib 2224 is deformed to realize the position floating of the connector body 220. It can be known that by adjusting the size of the gap between the connector body 220 and the box body 1 and the extension length of the active rib 2224, the steering angle of the connector body 220 can be adjusted, thereby obtaining a larger position deviation.

[0058] The elastic member 223 is preferably a spring. The second mounting portion 221 is provided with a first limiting hole 2211 for the fastener 8 to pass through, and the second side wall 12 of the box body 1 is correspondingly provided with a second limiting hole 122 for the fastener 8 to pass through. Preferably, the inner diameter of the first limiting hole 2211 is larger than the inner diameter of the second limiting hole 122, and the fastener 8 is adapted to the second limiting hole 122, so that the fastener 8 can be fixed on the box body 1, so that the connector body 220 can float along the first limiting hole 2211.

[0059] The elastic member 223 is located between the first limiting hole 2211 and the second limiting hole 122, and the elastic member 223 is at least partially accommodated in the first limiting hole 2211 and abuts against the second mounting portion 221. A limiting column 2231 is provided at one end of the elastic member 223, and the connector body 220 is correspondingly provided with a through hole 2215 for the limiting column 2231 to pass through. Specifically, a step portion 2214 is provided at one end of the first limiting hole 2211 away from the box body 1, so that the inner diameter of the end of the first limiting hole 2211 away from the box body 1 is smaller than the inner diameter of the end of the first limiting hole 2211 close to the box body 1. A through hole 2215 is provided on the step portion 2214, that is, the through hole 2215 is provided in the first limiting hole 2211, and the through hole 2215 is connected to the first limiting hole 2211.

[0060] In this embodiment, the limiting column 2231 is arranged at one end of the elastic member 223 away from the box body 1, and the limiting column 2231 is inserted into the through hole 2215 to connect the elastic member 223 with the second mounting portion 221. The elastic member 223 is arranged in a conical shape, and the two ends of the elastic member 223 are respectively adapted to the apertures of the first limiting hole 2211 and the second limiting hole 122, that is, the inner diameter of the elastic member 223 gradually decreases from the first limiting hole 2211 toward the second limiting hole 122. The elastic member 223 is also coaxially arranged with the first limiting hole 2211 and the second limiting hole 122, so that the fastener 8 can be centered and quickly passed through the first limiting hole 2211 and the second limiting hole 122.

[0061] like Fig.16 As shown, a protruding clamping portion 81 is provided on the outer peripheral wall of the fastener 8, and after the clamping portion 81 passes through the elastic member 223 from the first limiting hole 2211, it is clamped with one end of the elastic member 223 near the second limiting hole 122. In this embodiment, the female connector 22 is installed at the bottom of the box body 1 and is affected by its own gravity. The clamping portion 81 is clamped with one end of the elastic member 223 near the second limiting hole 122, which can further prevent the fastener 8 from falling off and improve the connection strength between the connector body 220 and the box body 1.

[0062] In summary, the female connector 22 can float relative to the fastener 8 and the box body 1 under the elastic action of the flexible member 222 and the elastic member 223 , so as to facilitate plugging with the corresponding male connector 21 .

[0063] Combination Figure 8As shown, in this embodiment, the male connector 21 is provided with a plurality of pins 212 and a circuit board 4 arranged parallel to and spaced from the plurality of pins 212, and the two opposite sides of the circuit board 4 are provided with a plurality of gold fingers 41 arranged in a straight line. The female connector 22 is provided with a plurality of first slots 224 for the pins 212 to be inserted and a second slot 225 for the circuit board 4 to be inserted, and the second slot 225 is provided with a plurality of terminals (not numbered) contacting the gold fingers 41. In this embodiment, the plurality of pins 212 include two electrode pins 2121 and a grounding pin 2122 located between the two electrode pins 2121, and the plurality of pins 212 are electrically connected to one end of the cable 23 respectively, and the other end of the cable 23 is connected to the first slot 224. When two adjacent boxes 1 are stacked on each other, the plurality of pins 212 of the male connector 21 and the circuit board 4 are inserted into the first slot 224 and the second slot 225 of the corresponding female connector 22 on the adjacent box 1, so as to realize the power and communication connection between the battery bodies in the two adjacent boxes 1. The circuit board 4 has stable contact and high degree of freedom, and can realize signal integration on the circuit board 4 with stable transmission.

[0064] like Fig.17 As shown, the auxiliary connector 3 is electrically connected to the corresponding male connector 21 or the female connector 22. The auxiliary connector 3 includes a wired female connector 31 electrically connected to the male connector 21 at the top of the battery cluster to perform power connection and signal connection. The wired female connector 31 has a similar structure to the female connector 22, and is provided with a plurality of first slots 224 for the pins 212 to be inserted and a second slot 225 for the circuit board 4 to be inserted. The second slot 225 is provided with a plurality of terminals that contact the gold fingers 41. The wired female connector 31 can connect the battery cluster to the inverter to perform power connection and signal connection between the battery cluster and the inverter.

[0065] like Figure 18-Figure 22 As shown, the auxiliary connector 3 also includes a wired male connector 32 electrically connected to the female connector 22 at the bottom end of the battery cluster. The wired male connector 32 has a similar structure to the male connector 21, and is provided with a plurality of pins 212 and a circuit board 4 arranged parallel to and spaced apart from the plurality of pins 212. The plurality of pins 212 include two electrode pins 2121 and a grounding pin 2122 located between the two electrode pins 2121. The two opposite sides of the circuit board 4 are provided with a plurality of gold fingers 41 arranged in a straight line. The wired male connector 32 is used to connect another battery cluster to connect a plurality of the battery clusters. Optionally, the wired male connector 32 can realize the series connection or parallel connection of a plurality of battery bodies in two adjacent battery clusters, which can be specifically set according to actual needs and is not described in detail here.

[0066] The wired male connector 32 is also provided with a grounding structure 9. Specifically, the wired male connector 32 includes a docking portion 321 and a shell 322 assembled at one end of the docking portion 321, the docking portion 321 is provided with a protruding connecting portion 323, and the connecting portion 323 is assembled and matched with the shell 322. A first fixing hole 3231 is provided on the connecting portion 323, and a second fixing hole 3221 aligned with the first fixing hole 3231 is provided on the shell 322. The wired male connector 32 also includes an embedded nut 324 embedded in the first fixing hole 3231 and the second fixing hole 3221 and a grounding screw 325 threadedly matched with the embedded nut 324. The grounding structure 9 is assembled on the docking portion 321, and the docking portion 321 is provided with a channel 3211 for the grounding structure 9 to pass through and can accommodate the grounding structure 9. The grounding structure 9 includes a conductive sheet 91, one end of which is electrically connected to the grounding pin 2122, and the other end of which passes through the channel 3211 and is electrically connected to the embedded nut 324, and the grounding pin 2122 is electrically connected to the ground wire, thereby achieving grounding of the grounding structure 9. Of course, in other optional embodiments, the grounding pin 2122 and the embedded nut 324 may also be electrically connected by other conductive components such as conductive wires, which is not limited thereto.

[0067] Preferably, the outer circumference of the embedded nut 324 is provided with protruding teeth 3241 along the central axis direction thereof, and two protruding teeth 3241 are provided and spaced apart from each other, so as to limit the two ends of the embedded nut 324 in the first fixing hole 3231 and the second fixing hole 3221, respectively. The outer circumference of the embedded nut 324 is also provided with a groove 3242 arranged along the circumference thereof, and the groove 3242 is located between the two protruding teeth 3241 and is received in the second fixing hole 3221, so that the connection between the housing 322 and the connecting portion 323 is more stable, and at the same time, the conductive sheet 91 is connected to the groove 3242, so that the grounding connection is also more stable.

[0068] In this embodiment, the box 1 is preferably assembled on the base, and when the wired male connector 32 is electrically connected to the female connector 22 at the bottom of the battery cluster, the wired male connector 32 is assembled on the base, and the grounding screw 325 passes through the base and is screwed into the embedded nut 324, so that the grounding can be achieved while fixing the wired male connector 32. In other words, the end user does not need to ground separately, and can complete the grounding by tightening the grounding screw 325, which is more convenient and quick.

[0069] like Figure 23-Figure 25As shown, the auxiliary connector 3 also includes a series connector 33 electrically connected to the female connector 22 at the bottom of the battery cluster, and the series connector 33 is used to connect multiple battery bodies in the battery cluster in series. Specifically, in the series state, the positive and negative electrodes of the battery body are electrically connected to the male connector 21 or the female connector 22 respectively, so that the positive electrode of the battery body is connected to the negative electrode of the battery body in the adjacent box 1, and the negative electrode of the battery body is connected to the positive electrode of the battery body in the adjacent box 1. The series connector 33 is provided with a U-shaped pin 331, through which the positive and negative electrodes of the battery body at the bottom of the battery cluster are connected, so that multiple battery bodies are connected in series.

[0070] The auxiliary connector 3 also includes a parallel connector 34 electrically connected to the female connector 22 at the bottom of the battery cluster, and the parallel connector 34 is used to connect multiple battery bodies in the battery cluster in parallel. Specifically, in the parallel state, the positive and negative poles of the battery body are electrically connected to the male connector 21 or the female connector 22, respectively, so that the positive pole of the battery body is connected to the positive pole of the battery body in the adjacent box 1, and the negative pole of the battery body is connected to the negative pole of the battery body in the adjacent box 1, that is, multiple battery bodies are connected in parallel. At this time, the parallel connector 34 can not only ensure that multiple battery bodies are connected in parallel with each other, but also play the role of a waterproof cover and an insulating protective cover.

[0071] It can be known that the battery body is connected to the male connector 21 or the female connector 22 through the electrode cable 7. When one end of the electrode cable 7 is fixedly connected to the male connector 21 or the female connector 22, the positive and negative connections between the electrode cable 7 and the battery body can be interchanged to satisfy the conversion between the series state and the parallel state of multiple battery bodies. In other words, when it is necessary to switch the connection state between multiple battery bodies, it is only necessary to change the positive and negative connection relationship between the battery body and the male connector 21 or the female connector 22 in the box 1, without changing the connection relationship between multiple boxes 1.

[0072] The serial connector 33 and the parallel connector 34 are both provided with a circuit board 4, and the two opposite sides of the circuit board 4 are also provided with a plurality of gold fingers 41 arranged in a straight line, so as to be inserted into the second slot 225 of the corresponding female connector 22 and contact the terminal to achieve communication connection. In this embodiment, the serial connector 33 and the parallel connector 34 are also provided with a terminal resistor 5, and the terminal resistor 5 is located on the circuit board 4. The purpose of providing the terminal resistor 5 is to suppress interference when the serial connector 33 or the parallel connector 34 is electrically connected to the female connector 22 at the bottom of the battery cluster.

[0073] Optionally, when the multiple battery bodies in the battery cluster are in a parallel state, the circuit board 4 in the parallel connector 34 can also play a role of high-voltage interlocking, that is, only when the parallel connector 34 is electrically connected to the female connector 22 at the bottom of the battery cluster, the battery PACK connection system 100 can operate normally and be powered on. In other words, the terminal user can make the following settings according to the actual situation: when the multiple battery bodies in the battery cluster are in a parallel state, the parallel connector 34 must be plugged into the female connector 22 at the bottom of the battery cluster to confirm that the female connector 22 is in a protected state before the battery PACK connection system 100 can operate normally. In this way, it can be ensured that the battery PACK connection system 100 can achieve a waterproof effect in any use scenario, avoid the danger caused by the direct exposure of the female connector 22, and enhance the safety of use.

[0074] like Fig.26 and Fig. 27 As shown, in another embodiment, the series connector 33' and the parallel connector 34' may also be provided with the grounding structure 9. At this time, the series connector 33' is provided with two electrode pins 2121 and a grounding pin 2122 located between the two electrode pins 2121, and the two electrode pins 2121 are electrically connected. Removing the two electrode pins 2121 in the series connector 33' forms the parallel connector 34' which is only provided with the grounding pin 2122. The specific structure of the grounding structure 9 in the series connector 33' and the parallel connector 34' and the connection method between the embedded nut 324 and the grounding screw 325 can adopt the design in the wired male connector 32, which will not be elaborated here.

[0075] like Figure 1 As shown, in one embodiment, the battery PACK connection system 100 further includes a base 6, the box body 1 is mounted on the base 6, and the base 6 is mounted on a support surface (not shown), that is, the base 6 separates the box body 1 from the support surface, and the support surface can be a ground plane. At this time, the outer periphery of the series connector 33 and the parallel connector 34 can also be provided with a protruding third mounting portion 332, so that when the box body 1 is supported on the base 6, the series connector 33 and the parallel connector 34 are locked on the base 6 through the third mounting portion 332 to achieve reliable connection.

[0076] In another embodiment, the box 1 is directly assembled on the support surface, and one side of the serial connector 33 and the parallel connector 34 is provided with a protruding third mounting portion 341, and the corresponding female connector 22 is provided with a matching portion 227 that matches the third mounting portion 341, so that the serial connector 33 or the parallel connector 34 can be connected and fixed to the female connector 22. The matching portion 227 is preferably located on the side of the second mounting portion 221 away from the box 1.

[0077] In this embodiment, the wired female connector 31, the wired male connector 32, the serial connector 33 and the parallel connector 34 can be used in combination according to actual needs, or can be used separately, and there is no limitation on this.

[0078] In summary, the battery PACK connection system 100 of the present invention is achieved by installing the male connector 21 of the main connector 2 in the first mounting hole 111 on the first side wall 11 of the box 1, installing the female connector 22 in the second mounting hole 121 on the second side wall 12 of the box 1, and connecting one of the male connector 21 and the female connector 22 to the battery body in the box 1, and connecting the male connector 21 and the female connector 22 through a cable, so that when there are multiple boxes 1, two adjacent boxes 1 can be stacked on each other and electrically connected to the corresponding female connector 22 on the adjacent box 1 through the male connector 21, so as to form a battery cluster. In addition, by setting one of the male connector 21 and the female connector 22 as a floating connector, the stacking installation between the boxes 1 is facilitated. Compared with the prior art, the battery PACK connection system 100 of the present invention can realize quick connection and quick disassembly between the boxes 1, which is not only convenient for storage and replacement, but also keeps the appearance of multiple boxes 1 neat.

[0079] The above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. A battery PACK connection system, characterized in that: include: A box body, in which a battery body is arranged; A main connector, comprising a male connector, a female connector and a cable connecting the male connector and the female connector, wherein the male connector and the female connector are respectively installed on opposite sides of the box, and one of them is connected to the battery body; and An auxiliary connector, electrically connected to the corresponding male connector or the female connector; Wherein, one of the male-end connector and the female-end connector is a floating connector, comprising a connector body and an elastic member, wherein the connector body is assembled on the box body and spaced apart from the box body, a limiting column is provided at one end of the elastic member, and a through hole for the limiting column to pass through is correspondingly provided on the connector body, so that one end of the elastic member is connected to the connector body, and the other end of the elastic member extends toward the box body, and the connector body can float relative to the box body under the elastic action of the elastic member; There are multiple boxes, and two adjacent boxes are stacked on each other and electrically connected to corresponding female connectors on adjacent boxes through the male connector to form a battery cluster.

2. The battery PACK connection system according to claim 1, characterized in that: The male connector is arranged at the top of the box, and the female connector is arranged at the bottom of the box.

3. The battery PACK connection system according to claim 1, characterized in that: The male connector is partially exposed outside the box, and the female connector is also partially exposed outside the box.

4. The battery PACK connection system according to claim 1, characterized in that: The connector body is provided with a first limiting hole for the fastener to pass through, and the box body is correspondingly provided with a second limiting hole for the fastener to pass through. The inner diameter of the first limiting hole is larger than the inner diameter of the second limiting hole, so that the connector body can float along the first limiting hole.

5. The battery PACK connection system according to claim 4, characterized in that: A step portion is provided in the first limiting hole, so that the inner diameter of the first limiting hole away from the box body is smaller than the inner diameter of the first limiting hole close to the box body, and the through hole is opened on the step portion.

6. The battery PACK connection system according to claim 4, characterized in that: The elastic member is arranged in a conical shape and is at least partially accommodated in the first limiting hole. Both ends of the elastic member are respectively adapted to the apertures of the first limiting hole and the second limiting hole.

7. The battery PACK connection system according to claim 1, characterized in that: The auxiliary connector includes a wired female connector electrically connected to the male connector at the top of the battery cluster to perform power connection and signal connection.

8. The battery PACK connection system according to claim 7, characterized in that: The auxiliary connector further comprises a wired male connector electrically connected to the female connector at the bottom end of the battery cluster, wherein the wired male connector is used to connect to another battery cluster.

9. The battery PACK connection system according to claim 7, characterized in that: The auxiliary connector also includes a series connector electrically connected to the female connector at the bottom of the battery cluster, the series connector is used to connect multiple battery bodies in the battery cluster in series, a circuit board is arranged in the series connector, and a terminal resistor is arranged on the circuit board.

10. The battery PACK connection system according to claim 7, characterized in that: The auxiliary connector also includes a parallel connector electrically connected to the female connector at the bottom of the battery cluster, the parallel connector is used to connect multiple battery bodies in the battery cluster in parallel, and a circuit board is arranged in the parallel connector, and a terminal resistor is arranged on the circuit board.

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