High-power battery connector and hot-swap control system

Abstract

The invention discloses a high-power battery connector and a hot-plug control system. The high-power battery connector includes a male connector and a female connector. The male connector includes a male body, a male boss, a male positive and negative pole connection pins and a male hot-plug signal pin. The female connector includes a female body, a female ring groove, a female positive and negative pole connection pins and a female hot-plug signal pin. The male boss and the female ring groove are plugged into each other, the female positive and negative pole connection pins and the male positive and negative pole connection pins are plugged into each other, the female hot-plug signal pins and the male hot-plug signal pins are abutted against each other, and the male positive and negative pole connection pins and the female positive and negative pole connection pins are first contacted, and then the male hot-plug signal pins are contacted with the female hot-plug signal pins. The high-power battery connector of the invention can support unlimited hot plugging and provide protection for hot plugging of high-power loads. The hot-plug control system of the invention can avoid the generation of electric sparks during the hot-plugging process and improve the life of the battery connector.

Description

Technical Field

[0001] The invention relates to a connector, in particular to a high-power battery connector and a hot-plug control system. Background Art

[0002] With the rapid development of the lithium battery industry, the advantages of lithium batteries such as environmental protection, long service life, and good discharge performance are becoming more and more apparent; At present, lithium batteries have been widely used in various industries such as electric vehicles, electric vehicles, household backup power supplies, and communication base stations. High-power lithium batteries refer to lithium-ion batteries that can provide high-power discharge, and can provide driving force for loads such as equipment, instruments, models, and vehicles through high-power discharge. Taking high-power lithium batteries driving high-power electric vehicles as an example, the lithium battery and the electric vehicle are electrically connected through a connector. Due to the high power of the electric vehicle, the working current and open circuit voltage on the connector are large. If the electric vehicle is disconnected or connected to the lithium battery when powered on, that is, the connector is hot-plugged by mistake, the positive and negative poles of the connector touch or disconnect at the moment, sparks will be generated, that is, the positive and negative contacts of the connector will arc, causing contact erosion, resulting in a decrease in the life of the connector, which in turn affects the normal use of the lithium battery. Summary of the invention

[0003] In order to solve the above technical problems, the present invention proposes a high-power battery connector, which can support unlimited hot plugging (powered or loaded operation), and provides a guarantee for hot plugging of high-power loads.

[0004] Another object of the present invention is to provide a hot plug control system for a high-power battery connector, which can avoid the generation of electric sparks in the high-power battery connector during the hot plug process and solve the problem of reduced connector life due to hot plug.

[0005] The technical solution of the present invention is achieved in this way:

[0006] A high-power battery connector comprises a male connector and a female connector, wherein the male connector comprises a male body, a male boss formed on one side of the male body, male positive and negative electrode connection needles and a male hot-plug signal needle embedded in the male boss, and the female connector comprises a female body, a female ring groove formed on the female body, female positive and negative electrode connection needles and a female hot-plug signal needle arranged in the female ring groove, the male boss and the female ring groove are plugged into each other, the female positive and negative electrode connection needles and the conductive sockets at the front ends of the male positive and negative electrode connection needles are plugged into each other, the spring contact at the front end of the female hot-plug signal needle and the needle head groove at the front end of the male hot-plug signal needle are abutted against each other, and the male positive and negative electrode connection needles are first contacted with the female positive and negative electrode connection needles, and then the male hot-plug signal needle is contacted with the female hot-plug signal needle.

[0007] As a further improvement of the present invention, based on the mutual plug-in surface, the height of the male hot-plug signal pin is lower than the male positive and negative connection pins or / and the height of the female hot-plug signal pin is lower than the female positive and negative connection pins.

[0008] As a further improvement of the present invention, the male end boss is mainly composed of a first boss, a second boss and a third boss, the second boss is located between the first boss and the third boss, and a gap is formed between the second boss and the first boss and the third boss; the female end ring groove is divided into a first groove, a second groove and a third groove by two ribs; the male end positive and negative electrode connecting needles include a male end positive electrode connecting needle and a male end negative electrode connecting needle, the female end positive and negative electrode connecting needles include a female end positive electrode connecting needle and a female end negative electrode connecting needle, the male end positive electrode connecting needle is embedded in the first boss, and the male end negative electrode connecting needle is embedded in the first boss. In the three bosses, the male end hot plug signal needle is embedded in the second boss; the female end positive connection needle is arranged in the first groove, the female end negative connection needle is arranged in the third groove, and the female end hot plug signal needle is arranged in the second groove. The first boss is inserted into the first groove, the second boss is inserted into the second groove, and the third boss is inserted into the third groove, so that the male end positive connection needle and the male end negative connection needle are first directly in contact with the female end positive connection needle and the female end negative connection needle, and then the male end hot plug signal needle is directly in contact with the female end hot plug signal needle.

[0009] As a further improvement of the present invention, the first boss is flush with the third boss, and the height of the second boss is lower than that of the first boss and the third boss.

[0010] As a further improvement of the present invention, the male positive and negative connecting needles include two male positive connecting needles and two male negative connecting needles, and the two male positive connecting needles pass through the back side of the male body and are electrically connected together through the first conductive metal sheet; the two male negative connecting needles pass through the back side of the male body and are electrically connected together through the second conductive metal sheet; the female positive and negative connecting needles include two female positive connecting needles and two female negative connecting needles, and the two female positive connecting needles pass through the back side of the female body and are electrically connected together through the third conductive metal sheet; the two female negative connecting needles pass through the back side of the female body and are electrically connected together through the fourth conductive metal sheet.

[0011] As a further improvement of the present invention, the male end of the connector also includes a male end PCB circuit board and a plurality of male end data transmission signal pins, the male end PCB circuit board is installed on the back of the male end body, the male end data transmission signal pin is embedded in the second boss, the bottom end of the male end data transmission signal pin passes through the back of the male end body and is electrically connected to the male end PCB circuit board, and a male end connecting wire socket is formed at one end of the male end PCB circuit board.

[0012] As a further improvement of the present invention, the female end of the connector also includes a female end PCB circuit board and a plurality of female end data transmission signal pins, the female end PCB circuit board is installed on the back of the female end body, the female end data transmission signal pin is arranged in the second groove, the bottom end of the female end data transmission signal pin passes through the back of the female end body and is electrically connected to the female end PCB circuit board, and a female end connecting wire socket is formed at one end of the female end PCB circuit board.

[0013] As a further improvement of the present invention, the female end ring groove is a circular ring protruding from the female end body, a plurality of convex ribs are formed on the outer surface of the circular ring, and the first boss, the second boss and the third boss form a circular shape as a whole.

[0014] As a further improvement of the present invention, it also includes a rubber ring, which is sleeved outside the male end protrusion and sealed with the male end body. After the circular ring is plugged into the male end protrusion, the convex ribs on the outer side of the circular ring are in elastic contact with the rubber ring.

[0015] A hot-swap control system is mainly composed of a battery pack, a control circuit board and a high-power battery connector. The control circuit board is electrically connected to the charging and discharging circuit of the battery pack. The male positive and negative connecting pins and the male hot-swap signal pin of the connector male end of the high-power battery connector are electrically connected to the control circuit board through a line. The female positive and negative connecting pins of the connector female end of the high-power battery connector are electrically connected to the control circuit of the load. The female hot-swap signal pin of the connector female end of the high-power battery connector is electrically connected to the positive line of the control circuit of the load. When the male hot-swap signal pin contacts the female hot-swap signal pin, a connection signal is fed back to the control circuit board. The control circuit board controls the on and off of the charging and discharging circuit of the battery pack according to the received connection signal.

[0016] The beneficial effects of the present invention are:

[0017] 1. The high-power battery connector of the present invention comprises a male connector and a female connector, the male connector comprises a male body and a male boss, the female connector comprises a female body and a female ring groove, and a male positive and negative connecting pin for realizing electric transmission is arranged in the male boss of the male connector, and a male hot plug signal pin for realizing hot plug control is arranged; and a female positive and negative connecting pin for realizing electric transmission corresponding to the male positive and negative connecting pin is arranged in the female ring groove, and a male hot plug signal pin for realizing hot plug control corresponding to the male hot plug signal pin is arranged in the female ring groove, and the male hot plug signal pin and the female hot plug signal pin are designed to be disconnected first, and the connection between the male positive and negative connecting pins and the female positive and negative connecting pins is designed to be disconnected later, the high-power battery connector of the present invention can support unlimited hot plugging (powered or loaded operation), can provide protection for hot plugging of high-power loads, and will not reduce the life of the connector due to misoperation.

[0018] 2. The present invention proposes a hot-swap control system for a high-power battery connector, which is mainly composed of a battery pack, a control circuit board and a high-power battery connector. The control circuit board is mainly used to collect the connection signal after the male hot-swap signal pin of the battery connector contacts the female hot-swap signal pin, and control the on and off of the battery pack's charge and discharge circuit according to the connection signal. That is, after the male hot-swap signal pin contacts the female hot-swap signal pin, the control circuit board will obtain a connection signal, and the control circuit board will realize the conduction of the battery pack's charge and discharge circuit through the control circuit. On the contrary, after the male hot-swap signal pin disconnects from the female hot-swap signal pin, the control circuit board loses the connection signal, and the charge and discharge circuit of the battery pack will be powered off through the control circuit. In this way, when the battery end is inserted into the locomotive end, although the positive and negative electrodes of the battery end first contact with the positive and negative electrodes of the locomotive end, at this time, the control circuit board of the battery end controls the lithium battery through the control circuit to be not powered, so no electric spark will be generated. After the hot plug signal pin of the battery end contacts the hot plug signal pin of the locomotive end, a feedback signal is given to the control circuit board of the battery end, and the control circuit board immediately turns on or delays the set time to turn on the battery pack of the battery end through the control circuit to formally power on, thereby avoiding electric sparks when the connector is plugged in. On the contrary, when the battery end is unplugged from the locomotive end, the hot plug signal pin of the battery end and the hot plug signal pin of the locomotive end will first disconnect. At this time, the control circuit board of the battery end will immediately disconnect the power supply of the battery end due to the loss of the feedback signal of the hot plug signal pin. Since the battery end is already in a power-off state, when the positive and negative electrodes of the battery end are disconnected from the positive and negative electrodes of the locomotive end, no electric spark will occur. In this way, it is possible to avoid the generation of electric sparks in the high-power battery connector during the hot plug process, and solve the problem of reduced connector life due to hot plug. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1is a three-dimensional diagram of a high-power battery connector of the present invention;

[0020] Figure 2 It is a side view of the high-power battery connector of the present invention;

[0021] Figure 3 for Figure 2 Middle AA section view;

[0022] Figure 4 It is a bottom view of the high-power battery connector of the present invention;

[0023] Figure 5 for Figure 4 Middle BB section view;

[0024] Figure 6 It is a front view of the male end of the connector in the present invention;

[0025] Figure 7 It is a back view of the male end of the connector in the present invention;

[0026] Figure 8 It is a front view of the female end of the connector in the present invention;

[0027] Fig. 9 It is a back view of the female end of the connector in the present invention;

[0028] Fig.10 This is a working principle diagram of the hot-swap control system of the present invention.

[0029] Combined with the attached drawings, the following description is given:

[0030] 1-connector male end, 110-male end body, 120-male end boss, 121-first boss, 122-second boss, 123-third boss, 131-male end positive connection pin, 132-male end negative connection pin, 140-male end hot plug signal pin, 150-first conductive metal sheet, 160-second conductive metal sheet, 170-male end PCB circuit board, 180-male end data transmission signal pin, 190-male end connection line socket, 2-connector female end, 21 0-female end body, 220-female end ring groove, 221-rib plate, 222-first groove, 223-second groove, 224-third groove, 225-convex rib, 231-female end positive connection pin, 232-female end negative connection pin, 240-female end hot plug signal pin, 250-third conductive metal sheet, 260-fourth conductive metal sheet, 270-female end PCB circuit board, 280-female end data transmission signal pin, 290-female end connecting wire socket, 3-rubber ring. DETAILED DESCRIPTION

[0031] In order to more clearly understand the technical content of the present invention, the following embodiments are described in detail, the purpose of which is only to better understand the content of the present invention but not to limit the scope of protection of the present invention. The components in the structure of the embodiment drawings are not scaled according to normal proportions, so they do not represent the actual relative sizes of the structures in the embodiments. The above or upper side of the structure or surface mentioned therein includes the situation where there are other layers in the middle.

[0032] Examples, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9As shown, a high-power battery connector includes a connector male end 11 and a connector female end 2, wherein the connector male end 1 includes a male end body 110, a male end boss 120 formed on one side of the male end body 110, a male end positive and negative electrode connection needle and a male end hot plug signal needle 140 embedded in the male end boss 120, and the connector female end 2 includes a female end body 210, a female end ring groove 220 formed on the female end body 210, a female end positive and negative electrode connection needle and a female end hot plug signal needle 140 arranged in the female end ring groove 220. The male end hot plug signal pin 240 is connected to the female end ring groove 220, the female end positive and negative connection pins are connected to the conductive jacks at the front end of the male end positive and negative connection pins, the spring contact at the front end of the female end hot plug signal pin 240 is in contact with the needle head groove at the front end of the male end hot plug signal pin 140, and the male end positive and negative connection pins are first in contact with the female end positive and negative connection pins, and then the male end hot plug signal pin 140 is in contact with the female end hot plug signal pin 240. In this way, the plug-in positioning function of the connector can be realized by plugging the male end boss 120 of the connector male end 1 and the female end ring groove 220 of the connector female end 2. In addition to providing male end positive and negative connecting pins for realizing electrical transmission in the male end boss 120, the present invention also provides a male end hot plug signal pin 140 for realizing hot plug control. Similarly, female end positive and negative connecting pins for realizing electrical transmission corresponding to the male end positive and negative connecting pins are provided in the female end ring groove 220, and a male end hot plug signal pin 140 for realizing hot plug control corresponding to the male end hot plug signal pin 140 is provided in the female end ring groove 220. In particular, in order to avoid sparks generated when the male and female positive and negative connecting pins are disconnected when the male end 1 and the female end 2 of the connector are unplugged with power, the present invention designs the male end hot plug signal pin 140 and the female end hot plug signal pin 240 to disconnect first, and the connection between the male end positive and negative connecting pins and the female end positive and negative connecting pins is designed to disconnect later. That is to say, when the male end 1 and the female end 2 of the connector are plugged into each other, the connection between the male end positive and negative connecting pins and the female end positive and negative connecting pins is designed to contact first, and the connection between the male end hot plug signal pin 140 and the female end hot plug signal pin 240 is designed to contact later. In this way, the high-power battery connector of the present invention can support unlimited hot plugging (powered or loaded operation), can provide protection for hot plugging of high-power loads, and will not reduce the life of the connector due to misoperation.

[0033] In order to achieve that when the male end 1 of the connector and the female end 2 of the connector are plugged into each other, the positive and negative connecting pins of the male end contact with the positive and negative connecting pins of the female end first, and the hot plug signal pin 140 of the male end contacts with the hot plug signal pin 240 of the female end later. In specific implementation, the height of the hot plug signal pin 140 of the male end can be designed to be lower than the positive and negative connecting pins of the male end, or the height of the hot plug signal pin 240 of the female end can be designed to be lower than the positive and negative connecting pins of the female end, based on the plug-in surface. Or, at the same time, the height of the hot plug signal pin 140 of the male end can be designed to be lower than the positive and negative connecting pins of the male end, and the height of the hot plug signal pin 240 of the female end can be designed to be lower than the positive and negative connecting pins of the female end.

[0034] In order to achieve a more firm and stable connection between the male end 1 and the female end 2 of the connector and avoid electrical connection between the positive and negative connecting pins of the female end and the hot plug signal pin 240 of the female end, preferably, see Figure 6 , Figure 7 , Figure 8 and Fig. 9The male end boss 120 of the connector male end 1 is mainly composed of a first boss 121, a second boss 122 and a third boss 123, the second boss 122 is located between the first boss 121 and the third boss 123, and a gap is formed between the second boss 122 and the first boss 121 and the third boss 123; the female end annular groove 220 is divided into a first groove 222, a second groove 223 and a third groove 224 by two ribs 221; the male end positive and negative electrode connecting needles include a male end positive electrode connecting needle 131 and a male end negative electrode connecting needle 132, the female end positive and negative electrode connecting needles include a female end positive electrode connecting needle 231 and a female end negative electrode connecting needle 232, the male end positive electrode connecting needle 131 is embedded in the first boss 121, and the male end negative electrode connecting needle 1 32 is embedded in the third boss 123, and the male hot-plug signal needle 140 is embedded in the second boss 122; the female positive connecting needle 231 is arranged in the first groove 222, the female negative connecting needle 232 is arranged in the third groove 224, and the female hot-plug signal needle 240 is arranged in the second groove 223. The first boss 121 is inserted into the first groove 222, the second boss 122 is inserted into the second groove 223, and the third boss 123 is inserted into the third groove 224, so that the male positive connecting needle 131 and the male negative connecting needle 132 are first directly in contact with the female positive connecting needle 231 and the female negative connecting needle 232, and then the male hot-plug signal needle 140 is directly in contact with the female hot-plug signal needle 240. In this way, since the positions of the male positive connection pin 131 and the male negative connection pin 132 on the male end boss 120 correspond to the positions of the female positive connection pin 231 and the female negative connection pin 232 in the female end ring groove 220, after the male end 1 of the connector and the female end 2 of the connector are assembled, the male positive and negative connection pins can be plugged into the conductive jacks at the front ends of the female positive and negative connection pins, and the male hot plug signal pin 140 and the female hot plug signal pin 240 can also be in direct elastic contact to achieve signal connectivity. Since the female end ring groove 220 is divided into three independent groove spaces by two ribs 221, the independent setting of the female positive and negative connection pins and the female hot plug signal pin 240 is achieved, thereby avoiding the generation of electrical continuity between the female positive and negative connection pins and the female hot plug signal pin 240. When the female end annular groove 220 is a ring body protruding from the female end body 210, the two ribs 221 can play a role in increasing the strength of the ring body. Preferably, in order to increase the firmness when plugged into each other, the middle position of the second boss 122 is designed to be convex arc-shaped, and the corresponding positions of the middle parts of the two ribs 221 are designed to be concave arc-shaped. At the same time, the middle positions of the first boss 121 and the third boss 123 are also designed to be concave arc-shaped.

[0035] In order to make the plugging of the connector male end 1 and the connector female end 2 more stable and reliable, preferably, the high-power battery connector of the present invention also includes a rubber ring 3, which is sleeved outside the male end protrusion and is sealed and connected to the male end body 110. After the ring is plugged into the male end protrusion, the rib 225 on the outer side of the ring is in elastic contact with the rubber ring 3. Here, the rubber ring 3 plays a damping role on the one hand, so as to reduce the left and right shaking of the male end boss 120 of the connector male end 1 and the female end annular groove 220 of the connector female end 2 after being plugged into each other. On the other hand, it plays a sealing role to prevent foreign matter from entering the annular groove at the bottom of the male end protrusion.

[0036] In the above structure, the shape of the female end ring groove 220 is not limited. Preferably, the female end ring groove 220 is a circular ring protruding from the female end body 210, and a plurality of convex ribs 225225 are formed on the outer surface of the circular ring. The first boss 121, the second boss 122 and the third boss 123 form a circular shape as a whole. In this way, the female end ring groove 220 protrudes from the female end body 210, and the female end ring groove 220 and the first, second and third bosses 123 form a circular shape as a whole, which is convenient for plugging between the male end 1 of the connector and the female end 2 of the connector. The plurality of convex ribs 225 formed on the outer surface of the circular ring play a role in increasing the structural strength on the one hand, and on the other hand, when the convex ribs 225 and the rubber ring 3 cooperate with each other, the grooves between the adjacent convex ribs 225 play a role in ventilation, which is convenient for pulling out the male end 1 of the connector from the female end 2 of the connector. Preferably, an annular groove for avoiding the circular ring is formed around the bottom end of the male end boss 120, so that when the male end boss 120 is inserted into the circular ring, the front end of the circular ring is inserted into the annular groove.

[0037] Since the connection between the female end hot plug signal pin 240 and the male end hot plug signal pin 140 is achieved by crimping the spring contact and the needle slot, in order to reduce the signal delay in this compression space, preferably, the first boss 121 is flush with the third boss 123, and the height of the second boss 122 is lower than the first boss 121 and the third boss 123. And by controlling the height of the second boss 122 to be lower than the first boss 121 and the third boss 123, it can be ensured that the male end positive and negative connection pins contact with the female end positive and negative connection pins first, and then the male end hot plug signal pin 140 contacts with the female end hot plug signal pin 240, so that the high-power battery connector has a hot plug function.

[0038] In the above structure, the shapes of the male body 110 and the female body 210 are not limited. As a preferred embodiment, the present invention designs the male body 110 and the female body 210 into a square shape, but it is not limited to this. Those skilled in the art can design the male body 110 and the female body 210 into other regular shapes (such as circular, elliptical) or irregular shapes (such as polygonal prisms) according to actual needs. Similarly, the present invention designs the female ring groove 220 of the female body 210 into a circle, and the first boss 121, the second boss 122 and the third boss 123 are designed to be circular as a whole. But it is not limited to this. Those skilled in the art can design the ring into other regular shapes (such as square, rectangular) or irregular shapes (such as polygonal prisms) according to actual needs.

[0039] Preferably, see Figure 6 and Fig. 9 The male positive and negative electrode connecting needles include two male positive electrode connecting needles 131 and two male negative electrode connecting needles 132. The two male positive electrode connecting needles 131 pass through the back side of the male end body 110 and are electrically connected together through the first conductive metal sheet 150; the two male negative electrode connecting needles 132 pass through the back side of the male end body 110 and are electrically connected together through the second conductive metal sheet 160; the female positive and negative electrode connecting needles include two female positive electrode connecting needles 231 and two female negative electrode connecting needles 232. The two female positive electrode connecting needles 231 pass through the back side of the female end body 210 and are electrically connected together through the third conductive metal sheet 250; the two female negative electrode connecting needles 232 pass through the back side of the female end body 210 and are electrically connected together through the fourth conductive metal sheet 260. In this way, by connecting the two male positive connecting needles 131 and the two female positive connecting needles 231 for conductivity, and connecting the two male negative connecting needles 132 and the two female negative connecting needles 232 for conductivity, a larger current can be conducted to meet the charging and discharging needs of high-power batteries. Among them, the first conductive metal sheet 150 is used to realize the conductive connection of the two male positive connecting needles 131. Specifically, a nickel sheet can be used to weld the two male positive connecting needles 131 to the nickel sheet, and the external positive wire can also be welded to the nickel sheet, so as to realize the conductive connection between the male positive connecting needle 131 and the positive wire of the battery end. The functions of the second conductive metal sheet 160, the third conductive metal sheet 250, and the fourth conductive metal sheet 260 are the same as those of the first conductive metal sheet 150. As a preferred embodiment, the present invention designs square ring grooves on the back of the male body 110 and the female body 210. The first and second conductive metal sheets 160 can be accommodated in the square ring grooves of the male body 110, and the third and fourth conductive metal sheets 260 can be accommodated in the square ring grooves of the female body 210 to form a protective effect on the conductive metal sheets and the positive and negative connecting needles.

[0040] Preferably, see Figure 6 and Fig. 9 The connector male end 1 also includes a male PCB circuit board 170 and a plurality of male data transmission signal pins 180. The male PCB circuit board 170 is installed on the back of the male body 110. The male data transmission signal pins 180 are embedded in the second boss 122. The bottom ends of the male data transmission signal pins 180 pass through the back of the male body 110 and are electrically connected to the male PCB circuit board 170. A male connecting wire socket 190 is formed at one end of the male PCB circuit board 170. The connector female end 2 also includes a female end PCB circuit board 270 and a plurality of female end data transmission signal pins 280. The female end PCB circuit board 270 is installed on the back of the female end body 210. The female end data transmission signal pin 280 is arranged in the second groove 223. The bottom end of the female end data transmission signal pin 280 passes through the back of the female end body 210 and is electrically connected to the female end PCB circuit board 270. A female end connection line socket 290 is formed at one end of the female end PCB circuit board 270. In this way, the electrical properties of the plurality of data transmission signal pins can be led out to the connection line socket through the PCB circuit board. The connection line socket is used to connect the signal connection line of the locomotive end or the battery end, so as to realize the transmission of the battery end data to the locomotive end data. As a preferred embodiment, the connector male end 1 and the connector female end 2 in the present invention each illustrate four data transmission signal pins for transmitting power, voltage, temperature and mileage data. Therefore, the male end connecting cable socket 190 adopts a four-pin socket, and correspondingly, the female end connecting cable socket 290 also adopts a four-pin socket.

[0041] In the above structure, the male end PCB circuit board 170 is designed on the back of the male end body 110, and multiple male end data transmission signal pins 180 and male end hot plug signal pins 140 are integrated together on the second boss 122 located in the middle position, and arranged in a straight line; the female end PCB circuit board 270 is designed on the back of the female end body 210, and multiple female end data transmission signal pins 280 and female end hot plug signal pins 240 are integrated together in the second groove 223 located in the middle position, and arranged in a straight line. While realizing the data transmission and hot plug signal control of the connector, the structure of the connector is optimized and it is very convenient for production and manufacturing.

[0042] See also Fig.10The present invention also proposes a hot-swap control system, which is mainly composed of a battery pack, a control circuit board and the above-mentioned high-power battery connector. The control circuit board is electrically connected to the charging and discharging circuit of the battery pack, and the male positive and negative connecting pins of the connector male end 1 of the high-power battery connector and the male hot-swap signal pin 140 are electrically connected to the control circuit board through a line; the female positive and negative connecting pins of the connector female end 2 of the high-power battery connector are electrically connected to the control circuit of the load, and the female hot-swap signal pin 240 of the connector female end 2 of the high-power battery connector is electrically connected to the positive line of the control circuit of the load. When the male hot-swap signal pin 140 contacts the female hot-swap signal pin 240, a connection signal is fed back to the control circuit board, and the control circuit board controls the on and off of the charging and discharging circuit of the battery pack according to the received connection signal.

[0043] In the above structure, the control circuit board is mainly used to collect the connection signal after the male hot-plug signal pin 140 contacts the female hot-plug signal pin 240, and control the on and off of the battery pack's charge and discharge circuit according to the connection signal. Preferably, the control circuit board is composed of a control chip and a control circuit, and the male hot-plug signal pin 140 is connected to the control chip through a line. Since the female hot-plug signal pin 240 is connected to the positive line of the load's control circuit through a line, after the male hot-plug signal pin 140 contacts the female hot-plug signal pin 240, the control chip will obtain a connection signal, such as a high-level signal or a current signal. At this time, the control chip will send instructions to the control circuit to realize the conduction of the battery pack's charge and discharge circuit, for example, by controlling the switch element to turn on, to realize the conduction of the battery pack's charge and discharge circuit. On the contrary, after the male hot plug signal pin 140 is disconnected from the female hot plug signal pin 240, the control chip loses the connection signal and sends instructions to the control circuit to cut off the power of the charging and discharging circuit of the battery pack. In this way, it can avoid the generation of electric sparks in the high-power battery connector during the hot plug process and solve the problem of reduced connector life due to hot plug.

[0044] The working principle of the hot-swap control system of the present invention is as follows:

[0045] The structure of the high-power battery connector is improved, and male positive and negative connecting pins for realizing electrical transmission are arranged in the male end boss 120 of the male end 1 of the connector, and a male hot plug signal pin 140 for realizing hot plug control is also arranged. Similarly, female positive and negative connecting pins for realizing electrical transmission corresponding to the male positive and negative connecting pins are arranged in the female end ring groove 220, and a male hot plug signal pin 140 for realizing hot plug control corresponding to the male hot plug signal pin 140 is arranged in the female end ring groove 220. In particular, in order to avoid electric sparks generated when the positive and negative connecting pins of the male and female ends are disconnected when the male end 1 of the connector and the female end 2 of the connector are unplugged while powered on, the present invention designs the male end hot plug signal pin 140 and the female end hot plug signal pin 240 to be disconnected first, and the connection between the male end positive and negative connecting pins and the female end positive and negative connecting pins is designed to be disconnected later. That is to say, when the male end 1 of the connector and the female end 2 of the connector are plugged into each other, the connection between the male end positive and negative connecting pins and the female end positive and negative connecting pins is designed to be in contact first, and the connection between the male end hot plug signal pin 140 and the female end hot plug signal pin 240 is designed to be in contact later. In this way, when the male end 1 of the connector of the present invention is set as the battery end on the lithium battery, and the female end 2 of the connector of the present invention is set as the locomotive end on the battery car, when the battery end is inserted into the locomotive end, although the positive and negative electrodes of the battery end are first in contact with the positive and negative electrodes of the locomotive end, at this time, the control circuit board of the battery end controls the lithium battery through the control circuit to be not energized, so no sparks will be generated. After the hot plug signal pin of the battery end is in contact with the hot plug signal pin of the locomotive end, a signal is fed back to the control circuit board of the battery end, and the control circuit board immediately turns on or delays the set time through the control circuit to officially energize the battery pack at the battery end, thereby avoiding sparks when the connector is plugged in.

[0046] Similarly, when the battery end is unplugged from the locomotive end, the hot-plug signal pin of the battery end and the hot-plug signal pin of the locomotive end will first disconnect. At this time, the control circuit board of the battery end will immediately disconnect the power supply of the battery end due to the loss of the feedback signal of the hot-plug signal pin. Since the battery end is already in a power-off state, no electric spark will occur when the positive and negative poles of the battery end and the positive and negative poles of the locomotive end are disconnected. Therefore, the high-power battery connector and hot-plug control system of the present invention can support unlimited hot plugging of high-power batteries (powered or loaded operation), can provide protection for hot plugging of high-power loads, and will not reduce the life of the connector due to misoperation.

[0047] In the above-mentioned embodiment of the present invention, an example of connecting the male end 1 of the connector with the battery end is given. In other embodiments, the male end 1 of the connector and the female end 2 of the connector can be replaced, and the connection method of the male and female hot plug signal pins 240 can be changed at the same time.

[0048] The above embodiments are to describe the preferred embodiments of the present invention in detail with reference to the accompanying drawings. Those skilled in the art may make various modifications or changes to the above embodiments without departing from the essence of the present invention, which shall fall within the protection scope of the present invention.

Claims

1. A high-power battery connector, characterized in that: The invention comprises a male connector (1) and a female connector (2), wherein the male connector comprises a male body (110), a male boss (120) formed on one side of the male body, male positive and negative electrode connection pins and a male hot plug signal pin (140) embedded in the male boss, and the female connector comprises a female body (210), a female ring groove (220) formed on the female body, female positive and negative electrode connection pins and a female hot plug signal pin (140) embedded in the male boss. The male end hot plug signal pin (240) is connected to the female end ring groove, the female end positive and negative electrode connection pins are connected to the conductive jacks at the front ends of the male end positive and negative electrode connection pins, the spring contact at the front end of the female end hot plug signal pin abuts against the needle head groove at the front end of the male end hot plug signal pin, and the male end positive and negative electrode connection pins are first in contact with the female end positive and negative electrode connection pins, and then the male end hot plug signal pin is in contact with the female end hot plug signal pin; Taking the mutual plugging surface as a reference, the height of the male end hot plug signal pin is lower than the male end positive and negative electrode connection pins or / and the height of the female end hot plug signal pin is lower than the female end positive and negative electrode connection pins; The male end boss is mainly composed of a first boss (121), a second boss (122) and a third boss (123), the second boss is located between the first boss and the third boss, and a gap is formed between the second boss and the first boss and the third boss; the female end annular groove is divided into a first groove (222), a second groove (223) and a third groove (224) by two ribs (221); the male end positive and negative electrode connecting needles include a male end positive electrode connecting needle (131) and a male end negative electrode connecting needle (132), the female end positive and negative electrode connecting needles include a female end positive electrode connecting needle (231) and a female end negative electrode connecting needle (232), and the male end positive electrode connecting needle is embedded in the In the first boss, the male negative connection needle is embedded in the third boss, and the male hot-plug signal needle is embedded in the second boss; the female positive connection needle is arranged in the first groove, the female negative connection needle is arranged in the third groove, and the female hot-plug signal needle is arranged in the second groove. The first boss is inserted into the first groove, the second boss is inserted into the second groove, and the third boss is inserted into the third groove, so that the male positive connection needle and the male negative connection needle are first directly in contact with the female positive connection needle and the female negative connection needle, and then the male hot-plug signal needle is directly in contact with the female hot-plug signal needle; The male end positive and negative electrode connecting needles include two male end positive electrode connecting needles and two male end negative electrode connecting needles, and the two male end positive electrode connecting needles are electrically connected together through the first conductive metal sheet (150) after passing through the back side of the male end body; the two male end negative electrode connecting needles are electrically connected together through the second conductive metal sheet (160) after passing through the back side of the male end body; the female end positive and negative electrode connecting needles include two female end positive electrode connecting needles and two female end negative electrode connecting needles, and the two female end positive electrode connecting needles are electrically connected together through the third conductive metal sheet (250) after passing through the back side of the female end body; the two female end negative electrode connecting needles are electrically connected together through the fourth conductive metal sheet (260) after passing through the back side of the female end body; The male end of the connector further comprises a male end PCB circuit board (170) and a plurality of male end data transmission signal pins (180), wherein the male end PCB circuit board is mounted on the back of the male end body, the male end data transmission signal pins are embedded in the second boss, the bottom ends of the male end data transmission signal pins pass through the back of the male end body and are electrically connected to the male end PCB circuit board, and a male end connection line socket (190) is formed at one end of the male end PCB circuit board.

2. The high-power battery connector according to claim 1, characterized in that: The first boss is flush with the third boss, and the second boss is lower in height than the first boss and the third boss.

3. The high-power battery connector according to claim 1, characterized in that: The female end of the connector also includes a female end PCB circuit board (270) and a plurality of female end data transmission signal pins (280), wherein the female end PCB circuit board is installed on the back side of the female end body, and the female end data transmission signal pins are arranged in the second groove, and the bottom ends of the female end data transmission signal pins pass through the back side of the female end body and are electrically connected to the female end PCB circuit board, and a female end connection line socket (290) is formed at one end of the female end PCB circuit board.

4. The high-power battery connector according to claim 1, characterized in that: The female end annular groove is a circular ring protruding from the female end body, a plurality of convex ribs (225) are formed on the outer surface of the circular ring, and the first boss, the second boss and the third boss form a circular shape as a whole.

5. The high-power battery connector according to claim 4, characterized in that: It also includes a rubber ring (3), which is sleeved outside the male end boss and is sealed with the male end body. After the circular ring is plugged into the male end boss, the convex ribs on the outer side of the circular ring are in elastic contact with the rubber ring.

6. A hot-swap control system, characterized in that: It is mainly composed of a battery pack, a control circuit board and the high-power battery connector according to any one of claims 1 to 5, the control circuit board is electrically connected to the charging and discharging circuit of the battery pack, the male positive and negative connecting pins of the male end of the connector and the male hot-plug signal pin of the high-power battery connector are electrically connected to the control circuit board through a line, the female positive and negative connecting pins of the female end of the connector of the high-power battery connector are electrically connected to the control circuit of the load, the female hot-plug signal pin of the female end of the connector of the high-power battery connector is electrically connected to the positive line of the control circuit of the load, and when the male hot-plug signal pin contacts the female hot-plug signal pin, a connection signal is fed back to the control circuit board, and the control circuit board controls the on and off of the charging and discharging circuit of the battery pack according to the received connection signal.

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