A single battery capacity detection device for battery pack balancing control

Abstract

The present invention discloses a single battery capacity detection device for battery pack equalization control, including a battery parameter sensor. One end of the top of the battery parameter sensor is connected to a zero-line connector, and the other end of the top of the battery parameter sensor is connected to a protective sleeve. The periphery of the protective sleeve is sleeved with a protective shell. An insertion socket adapted to the protective sleeve is opened inside the protective shell. One side of the inside of the insertion socket is provided with a power connection sleeve, and a jack is opened inside the power connection sleeve. A groove adapted to the power connection sleeve is opened on one side of the protective sleeve, and a plug adapted to the jack is installed in the groove. One side of the power connection sleeve is connected to a live-line connector penetrating the protective shell. Through the design of a power inspection mechanism, metal elastic pieces, a protective sleeve and other structures, the present invention can facilitate personnel to judge the positive and negative poles of the battery before detection, avoid incorrect connection, make the measurement result more accurate, facilitate the assembly and use of the device by the user, and optimize the use process.

Description

Technical Field

[0001] The present invention relates to the technical field of battery capacity detection, and particularly to a single battery capacity detection device for battery pack balancing control. Background Art

[0002] With the continuous development of battery technology, battery packs are increasingly widely used in various fields, such as electric vehicles, energy storage systems, etc. The performance stability of the battery pack directly affects the operation efficiency and safety of the equipment. In practical applications, due to performance differences between battery monomers, such as internal resistance, capacity, etc., uneven phenomena will occur during the charging and discharging process of the battery pack, thereby affecting the overall performance and service life of the battery pack. Therefore, it is particularly important to perform balancing control on the battery pack. Currently, there are mainly two common battery pack balancing control methods: passive balancing and active balancing. Passive balancing achieves balancing by consuming the power of high-power batteries, while active balancing achieves balancing by transferring power. However, both of these methods require accurate capacity detection of the individual batteries in the battery pack in order to perform effective balancing control on the battery pack.

[0003] Traditional battery capacity detection devices mostly directly connect the wires of the test instrument to the positive and negative electrodes of the battery to achieve testing. However, when there are no obvious signs indicating the positive and negative electrodes on the battery or the detection device, incorrect connection of the positive and negative electrodes of the detection device to the battery will cause the current to flow in the opposite direction, resulting in incorrect measurement results, abnormal circuits, and thus damage to the detection instrument. Summary of the Invention

[0004] The purpose of the present invention is to solve the drawbacks existing in the prior art, such as: when there are no obvious signs indicating the positive and negative electrodes on the battery or the detection device, incorrect connection of the positive and negative electrodes of the detection device to the battery will cause the current to flow in the opposite direction, resulting in incorrect measurement results, abnormal circuits, and thus damage to the detection instrument.

[0005] To achieve the above purpose, the present invention provides the following technical solution:

[0006] A single battery capacity detection device for battery pack balancing control, including a battery parameter sensor. One end of the top of the battery parameter sensor is connected to a zero wire connector, and the other end of the top of the battery parameter sensor is connected to a protective sleeve. The protective sleeve is sleeved with a protective shell on the outside. An insertion socket adapted to the protective sleeve is opened inside the protective shell. A power connection sleeve is installed on one side inside the insertion socket, and a jack is opened inside the power connection sleeve. A groove adapted to the power connection sleeve is opened on one side of the protective sleeve, and a plug adapted to the jack is installed in the groove. One side of the power connection sleeve is connected to a live wire connector penetrating through the protective shell;

[0007] A housing is installed at the top of the protective shell. An electric testing mechanism is installed inside the housing. One side of the electric testing mechanism is connected to a metal elastic sheet whose bottom extends into the socket. A pressing mechanism is installed inside the socket at the top of the metal elastic sheet;

[0008] One side of the battery parameter sensor is installed with a mounting bracket. A sliding groove is formed inside the mounting bracket. A slider is slidably installed inside the sliding groove. One end of the slider is installed with a movable table. Connecting platforms are installed at the bottoms of both ends of the mounting bracket.

[0009] The battery parameter sensor is connected to a storage battery discharge monitor through a data cable. The ends of the live wire connector and the neutral wire connector are connected to a lithium battery. The storage battery discharge monitor and the lithium battery are connected through a wire.

[0010] Preferably, the electric testing mechanism includes a contact piece, a connecting spring, a neon lamp, and a resistor. One side of the contact piece is connected to the connecting spring. The neon lamp is installed on one side of the connecting spring. The resistor is connected to one side of the neon lamp.

[0011] Preferably, the top of the contact piece extends out of the housing. A perspective window is installed on the surface of the housing around the neon lamp. One side of the resistor is connected to the metal elastic sheet.

[0012] Preferably, the pressing mechanism includes a fixed frame, a reset spring, a pressing plate, and a push plate. The reset spring is installed inside the fixed frame. The pressing plate is installed at the bottom of the reset spring. The push plate installed at the bottom of the pressing plate penetrates through the fixed frame.

[0013] Preferably, the pressing plate is movably installed inside the fixed frame. The top of the fixed frame is connected to the inner wall of the socket. An insulating block that contacts the metal elastic sheet is installed at the bottom of the push plate.

[0014] Preferably, clamping rings are installed around the periphery of the protective sleeve. The distance between the clamping rings is greater than the length of the plug. A clamping groove adapted to the clamping rings is formed inside the socket.

[0015] Preferably, bumps are installed around the periphery of the protective sleeve on the other side of the protective shell. Insulating rubber sleeves are sleeved around the live wire connector and the neutral wire connector.

[0016] Preferably, an adhesive board is installed on one side of the mounting bracket. A display screen is installed on the other side of the battery parameter sensor.

[0017] Preferably, a plurality of hanging holes are formed at the top of one side of the mounting bracket. An indicating platform corresponding to the hanging holes is installed at the top of the mounting bracket.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. During the use of the present invention, the live wire connector is connected to the electrode on the lithium battery. After connection, the user touches the contact piece with a finger. At this time, the current path forms a loop through the live wire connector, resistor, neon lamp, contact piece, human body, and the ground, causing one of the electrodes inside the neon lamp to light up. After lighting up, the positive and negative electrodes of the lithium battery are judged by observing whether the lit electrode is at the front end or the rear end inside the neon lamp, quickly determining the positive and negative poles of the lithium battery, making the measurement data more accurate.

[0020] 2. The present invention designs the protective shell and the protective cover as a detachable structure. During use, by controlling the depth of insertion of the protective cover into the protective shell, while connecting and disconnecting the live wire connector and the battery parameter sensor, it can also control the connection and disconnection between the power connection sleeve and the metal elastic piece by using the protective cover, avoiding short circuits and electric leakage caused by accidentally touching the contact piece on the electric testing mechanism during the detection of the capacity of the lithium battery.

[0021] 3. The present invention is equipped with a pressing mechanism. During use, it can always maintain a downward pressure on the metal elastic piece, and as the metal elastic piece rotates and deforms, it compresses the return spring. Thus, after the protective cover is pulled out, the return spring can be used to push the push plate to drive the metal elastic piece to automatically reset, ensuring the normal operation of the electric testing mechanism.

[0022] 4. The present invention designs multiple installation methods. During use, different installation methods can be selected according to requirements to install the battery parameter sensor. After installation, the pulling force of the self-weight of the battery parameter sensor on the live wire connector and the neutral wire connector can be reduced, avoiding loosening of the live wire connector and the neutral wire connector due to pulling, and ensuring the normal operation of the battery parameter sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0024] Figure 2 is a side view of an embodiment of the present invention;

[0025] Figure 3 is a cross-sectional view of the protective shell of an embodiment of the present invention;

[0026] Figure 4 is a cross-sectional view of the protective shell and the housing of an embodiment of the present invention;

[0027] Figure 5 is a schematic structural diagram of the protective cover of an embodiment of the present invention;

[0028] Figure 6 is an unfolded view of the mounting bracket of an embodiment of the present invention;

[0029] Figure 7This is a schematic structural diagram of the live-line checking mechanism and the pressing mechanism in the embodiment of the present invention;

[0030] Figure 8 This is a schematic structural diagram of the battery parameter sensor and the battery discharge monitor in the embodiment of the present invention.

[0031] In the figure: 1, live wire connector; 2, housing; 3, perspective window; 4, live-line checking mechanism; 401, contact piece; 402, connecting spring; 403, neon lamp; 404, resistor; 5, metal elastic sheet; 6, pressing mechanism; 601, fixing frame; 602, reset spring; 603, pressing plate; 604, pushing plate; 7, protective shell; 8, power connection sleeve; 9, jack; 10, socket; 11, card slot; 12, protective sleeve; 13, snap ring; 14, convex block; 15, plug; 16, neutral wire connector; 17, battery parameter sensor; 18, display screen; 19, mounting bracket; 20, paste board; 21, connecting platform; 22, movable platform; 23, slider; 24, chute; 25, suspension hole; 26, indicating platform; 27, battery discharge monitor; 28, lithium battery. Specific embodiments

[0032] It is easy to understand that according to the technical solution of the present invention, without changing the essence of the present invention, those of ordinary skill in the art can propose various structural ways and implementation ways that can be mutually replaced. Therefore, the following specific embodiments and the drawings are only exemplary descriptions of the technical solution of the present invention, and should not be regarded as all of the present invention or as a limitation or restriction on the technical solution of the present invention.

[0033] A single battery capacity detection device for battery pack equalization control proposed by the present invention, for example, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 8As shown in the figure, it includes a battery parameter sensor 17. One end at the top of the battery parameter sensor 17 is connected to a zero - line connector 16, and the other end at the top of the battery parameter sensor 17 is connected to a protective sleeve 12. A protective shell 7 is sleeved around the periphery of the protective sleeve 12. Among them, the interface installed at the bottom on the other side of the battery parameter sensor 17 is electrically connected to the equalization control system. Both the protective sleeve 12 and the protective shell 7 are made of insulating materials. An insertion socket 10 adapted to the protective sleeve 12 is provided inside the protective shell 7. On one side inside the insertion socket 10, a power - connection sleeve 8 is installed, and a jack 9 is provided inside the power - connection sleeve 8. Among them, the power - connection sleeve 8 is made of conductive metal material. A groove adapted to the power - connection sleeve 8 is provided on one side of the protective sleeve 12, and a plug 15 adapted to the jack 9 is installed in the groove. One side of the power - connection sleeve 8 is connected to a live - wire connector 1 passing through the protective shell 7. Among them, metal connectors are provided on one side of both the live - wire connector 1 and the zero - line connector 16. The metal connectors are connected to the protective shell 7 through wires. By changing the shape of the wires connecting the metal connectors to the protective shell 7, different conditions can be met. The battery parameter sensor 17 is connected to a battery discharge monitor 27 through a data line. The ends of the live - wire connector 1 and the zero - line connector 16 are connected to a lithium battery 28. The battery discharge monitor 27 and the lithium battery 28 are connected through a wire. Among them, the battery parameter sensor 17 is composed of a voltage sensor and a current sensor. The voltage sensor is responsible for measuring the voltage of the battery, while the current sensor measures the current flow during battery charging and discharging. Generally, the voltage sensor uses the voltage - division principle to divide the voltage of the lithium battery 28 into an appropriate level, and then converts it into a digital signal through an analog circuit or an analog - to - digital conversion circuit, so as to accurately measure the voltage value of the battery. Specifically, during use, first connect the metal connectors on the live - wire connector 1 and the zero - line connector 16 to the positive and negative electrodes of the lithium battery 28 respectively. After connection, insert the protective sleeve 12 into the inside of the insertion socket 10 so that the protective sleeve 12 is sleeved around the periphery of the power - connection sleeve 8, and insert the plug 15 into the inside of the jack 9. After insertion, electrical connection is achieved among the live - wire connector 1, the power - connection sleeve 8, and the plug 15. Connect the test line of the battery discharge monitor 27 to the positive and negative electrodes of the lithium battery 28 to ensure firm and reliable connection. At the same time, connect the output end of the battery parameter sensor 17 to the input end of the battery discharge monitor 27 through a data line. When the battery discharge monitor 27 is in use, it performs constant - current discharge on the lithium battery 28, obtains the real - time voltage and current parameters of the lithium battery 28 by using the battery parameter sensor 17, and transmits the detected parameters to the inside of the battery discharge monitor 27 through the data line to monitor the voltage change of the lithium battery 28, thereby calculating the capacity of the lithium battery 28;

[0034] As Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 7As shown, a housing 2 is installed on the top of a protective shell 7. An electroscope mechanism 4 is installed inside the housing 2. One side of the electroscope mechanism 4 is connected to a metal shrapnel 5 whose bottom extends into the socket 10. Among them, the electroscope mechanism 4 includes a contact piece 401, a connecting spring 402, a neon lamp 403, and a resistor 404. One side of the contact piece 401 is connected to the connecting spring 402. The connecting spring 402 is installed with the neon lamp 403 on one side. One side of the neon lamp 403 is connected to the resistor 404. The top of the contact piece 401 extends out of the housing 2. A perspective window 3 is installed on the surface of the housing 2 around the neon lamp 403. One side of the resistor 404 is connected to the metal shrapnel 5. Among them, the perspective window 3 is made of a transparent material. The resistance value of the resistor 404 can be selected according to the size of the measured circuit. The neon lamp 403 contains two electrodes and neon gas inside. When measuring alternating current, both electrodes in the neon lamp 403 are bright. When measuring direct current, only one electrode in the neon lamp 403 is bright. The internal space of the neon lamp 403 can be divided into a front end and a rear end. Among them, the front end is the part of the neon lamp 403 close to the resistor 404 inside, and the rear end is the part of the neon lamp 403 close to the contact piece 401 inside. When the front end of the neon lamp 403 lights up, the measured circuit is negative. When the rear end of the neon lamp 403 lights up, the measured circuit is positive. The connecting spring 402 can effectively maintain good contact between the neon lamp 403 and the resistor 404. Specifically, when the protective sleeve 12 is not inserted into the socket 10, the bottom of the metal shrapnel 5 is in contact with the power connection sleeve 8. After the live wire connector 1 is connected to the electrode of the lithium battery 28, the user touches the contact piece 401 with a finger. At this time, the current path forms a loop through the live wire connector 1, the resistor 404, the neon lamp 403, the contact piece 401, the human body, and the ground, causing one electrode inside the neon lamp 403 to be bright. After it is bright, the positive and negative poles of the lithium battery 28 are judged by observing whether the bright electrode is located at the front end or the rear end inside the neon lamp 403, so as to facilitate the user to quickly determine the positive and negative poles of the lithium battery 28 without obvious marks, avoiding situations such as incorrect connection leading to inaccurate data and instrument damage. The perspective window 3 facilitates the user to observe the neon lamp 403 installed inside the housing 2;

[0035] As Figure 3 , Figure 4 and Figure 7As shown, a pressing mechanism 6 is installed inside the socket 10 at the top of the metal elastic sheet 5; the pressing mechanism 6 includes a fixing frame 601, a return spring 602, a pressing plate 603 and a pushing plate 604. A return spring 602 is installed inside the fixing frame 601. The bottom of the return spring 602 is installed with a pressing plate 603. The bottom of the pressing plate 603 is installed with a pushing plate 604 that penetrates the fixing frame 601. Among them, the pressing plate 603 is movably installed inside the fixing frame 601. The top of the fixing frame 601 is connected to the inner wall of the socket 10. The bottom of the pushing plate 604 is installed with an insulating block that contacts the metal elastic sheet 5. The fixing frame 601 is used to limit the movement track of the pressing plate 603. The ends of the return spring 602 are respectively connected to the inner wall of the fixing frame 601 and the pressing plate 603; specifically, when the protective sleeve 12 is not inserted into the socket 10, the pushing plate 604 and the pressing plate 603 squeeze the metal elastic sheet 5 under the action of the return spring 602, so that the bottom of the metal elastic sheet 5 remains in contact with the power connection sleeve 8, forming a complete circuit between the live wire connector 1 and the power inspection mechanism 4, so as to realize the judgment of the electrode. When the protective sleeve 12 is inserted into the socket 10, the protective sleeve 12 is sleeved around the power connection sleeve 8. The metal elastic sheet 5 disconnects the connection with the power connection sleeve 8 under the extrusion of the protective sleeve 12 and deforms and flips upward. After flipping, the protective sleeve 12 disconnects the connection between the metal elastic sheet 5 and the power connection sleeve 8, so that the current cannot be transmitted to the power inspection mechanism 4 through the metal elastic sheet 5, and the power inspection mechanism 4 stops working. During the upward flipping process of the metal elastic sheet 5, the return spring 602 is compressed through the pushing plate 604 and the pressing plate 603. Thus, after the protective sleeve 12 is pulled out, the return spring 602 is used to push the pushing plate 604 to drive the metal elastic sheet 5 to reset;

[0036] As Figure 2 and Figure 6As shown, an installation bracket 19 is installed on one side of the battery parameter sensor 17. A chute 24 is provided inside the installation bracket 19. A slider 23 is slidably installed inside the chute 24. One end of the slider 23 is installed with a movable platform 22. Connecting platforms 21 are installed at the bottoms of both ends of the installation bracket 19. Among them, the slider 23 is of a T-shaped structure, the chute 24 is a T-shaped groove, and bolts are movably installed inside both the movable platform 22 and the connecting platform 21; a paste board 20 is installed on one side of the installation bracket 19. Among them, a film is attached to the surface of the paste board 20; a display screen 18 is installed on the other side of the battery parameter sensor 17. Among them, the display screen 18 is electrically connected to the battery discharge monitor 27; a plurality of suspension holes 25 are provided at the top of one side of the installation bracket 19, and an indicating platform 26 corresponding to the suspension holes 25 is installed at the top of the installation bracket 19; specifically, during use, the data obtained by the battery parameter sensor 17 is displayed in a digital display manner by the display screen 18. After the live wire connector 1 is connected to the lithium battery 28, the battery parameter sensor 17 is installed according to requirements using different structures on the installation bracket 19. First, it can be selected to lift the film on the surface of the paste board 20 and use the paste board 20 to adhesively connect the installation bracket 19 to the external structure; secondly, it can be selected to use the suspension holes 25 to cooperate with external suspension nails to suspend and install the battery parameter sensor 17. Since the suspension holes 25 are located on the side of the installation bracket 19, they are not easy to observe during installation due to the obstruction of the battery parameter sensor 17. Therefore, during the suspension process, the indicating platform 26 can facilitate the user to judge the hole positions of the suspension holes 25, thereby making it more convenient for the user to quickly install the battery parameter sensor 17; finally, it can be selected to use bolts to pass through the connecting platform 21 and be threadedly connected to the external structure, and then the position of the slider 23 inside the chute 24 can be adjusted according to requirements. During the sliding process of the slider 23 inside the chute 24, the movable platform 22 is driven to move simultaneously. After the movable platform 22 is adjusted to the corresponding hole position, bolts are used for connection, so as to connect the battery parameter sensor 17 to the external structure in a multi-point fixed manner, increasing the stability of the battery parameter sensor 17 during the detection process;

[0037] As Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown in the figure, a snap ring 13 is installed around the periphery of the protective sleeve 12, and a slot 11 adapted to the snap ring 13 is provided inside the socket 10. The distance between the snap rings 13 is greater than the length of the plug 15. A convex block 14 is installed around the periphery of the protective sleeve 12 on the other side of the protective shell 7. Insulating rubber sleeves are sleeved around the periphery of the live wire connector 1 and the neutral wire connector 16. Among them, the number of slots 11 is not less than two. Specifically, when the protective sleeve 12 is inserted into the socket 10 during use, the snap ring 13 is snapped into the first slot 11. While connecting the protective sleeve 12 to the protective shell 7, it prevents the plug 15 from contacting the power connection sleeve 8. After the electrode detection is completed, manually push the protective sleeve 12 to insert the plug 15 into the inside of the jack 9. After insertion, the cooperation of the slot 11 and the snap ring 13 can prevent the protective sleeve 12 from falling off. The convex block 14 can increase the contact surface between the protective sleeve 12 and the user during use, increasing the stress points of the protective sleeve 12, so that the user can pull out the protective sleeve 12 from the inside of the socket 10 for disassembly. The insulating rubber sleeve can wrap and protect the live wire connector 1 and the neutral wire connector 16 during use, avoiding the occurrence of electric leakage after the connection of the live wire connector 1 and the neutral wire connector 16, and improving the safety performance after connection.

[0038] Working principle of the present invention: After inserting the protective sleeve 12 into the socket 10 before use, the snap ring 13 snaps into the first card slot 11. While connecting the protective sleeve 12 to the protective shell 7, it prevents the plug 15 from contacting the power connection sleeve 8. Under the action of the return spring 602, the push plate 604 and the pressure plate 603 squeeze the metal elastic sheet 5, so that the bottom of the metal elastic sheet 5 remains in contact with the power connection sleeve 8. The live wire connector 1 is connected to the electrode on the lithium battery 28. After the connection, the user touches the contact piece 401 with a finger. At this time, the current path forms a loop through the live wire connector 1, the resistor 404, the neon lamp 403, the contact piece 401, the human body and the ground, making one electrode inside the neon lamp 403 bright. After it becomes bright, the positive and negative poles of the lithium battery 28 are judged by observing whether the bright electrode is at the front end or the rear end inside the neon lamp 403, quickly determining the positive and negative poles of the lithium battery 28. After the positive and negative poles are judged, the live wire connector 1 and the neutral wire connector 16 are respectively connected to the positive and negative poles of the lithium battery 28. Manually push the protective sleeve 12 to insert the plug 15 into the jack 9. After insertion, the cooperation of the card slot 11 and the snap ring 13 can prevent the protective sleeve 12 from falling off. At the same time, the protective sleeve 12 is sleeved on the periphery of the power connection sleeve 8. Under the extrusion of the protective sleeve 12, the metal elastic sheet 5 disconnects from the power connection sleeve 8 and deforms and flips upward, so that the current cannot be transmitted to the power verification mechanism 4 through the metal elastic sheet 5, and the power verification mechanism 4 stops working. During the flipping process, the return spring 602 is compressed by the push plate 604 and the pressure plate 603. The live wire connector 1 is electrically connected to the battery parameter sensor 17 through the power connection sleeve 8 and the plug 15. After the connection is completed, according to the need, the film on the surface of the adhesive plate 20 can be lifted, and the adhesive plate 20 is used to paste and connect the mounting frame 19 to the external structure; or the hanging hole 25 can be used to cooperate with the external hanging nail to hang and install the battery parameter sensor 17. During the hanging process, the indicating platform 26 can facilitate the user to judge the hole position of the hanging hole 25;Alternatively, after using bolts to pass through the connection platform 21 and threadedly connect it to an external structure, the position of the slider 23 inside the chute 24 can be adjusted according to requirements. During the process of the slider 23 sliding inside the chute 24, the movable platform 22 is driven to move simultaneously. After adjusting the movable platform 22 to the corresponding hole position, bolts are used to pass through the movable platform 22 and connect it to the hole to install the battery parameter sensor 17 at the designated position. The battery discharge monitor 27 is connected to the lithium battery 28 through a wire. The output end of the battery parameter sensor 17 is connected to the input end of the battery discharge monitor 27 using a data cable. When in use, the battery discharge monitor 27 performs constant current discharge on the lithium battery 28, uses the battery parameter sensor 17 to obtain the real-time voltage and current parameters of the lithium battery 28, and transmits the detected parameters to the inside of the battery discharge monitor 27 through the data cable to monitor the voltage change of the lithium battery 28, thereby calculating the capacity of the lithium battery 28, and displaying the capacity data of the lithium battery 28 detected by the battery discharge monitor 27 in a digital display manner through the display screen 18 for easy reading.

[0039] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", "vertical", "horizontal", "top", "bottom", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0040] In the description of this patent, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "coupling", "setting" should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0041] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "several" is two or more unless otherwise clearly and specifically defined.

[0042] The technical scope of the present invention is not limited to the content described above. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical idea of the present invention, and these deformations and modifications should all fall within the protection scope of the present invention.

Claims

1. A single battery capacity detection device for battery pack equalization control, characterized in that: It includes a battery parameter sensor (17). One end at the top of the battery parameter sensor (17) is connected to a zero-line connector (16), and the other end at the top of the battery parameter sensor (17) is connected to a protective sleeve (12). A protective shell (7) is sleeved around the periphery of the protective sleeve (12). An insertion socket (10) adapted to the protective sleeve (12) is provided inside the protective shell (7). A power connection sleeve (8) is installed on one side inside the insertion socket (10), and a jack (9) is provided inside the power connection sleeve (8). A groove adapted to the power connection sleeve (8) is provided on one side of the protective sleeve (12), and a plug (15) adapted to the jack (9) is installed in the groove. One side of the power connection sleeve (8) is connected to a live-line connector (1) penetrating the protective shell (7); A housing (2) is installed on the top of the protective shell (7). An electricity inspection mechanism (4) is installed inside the housing (2). One side of the electricity inspection mechanism (4) is connected to a metal elastic sheet (5) whose bottom extends into the insertion socket (10). A pressing mechanism (6) is installed inside the insertion socket (10) at the top of the metal elastic sheet (5); An installation bracket (19) is installed on one side of the battery parameter sensor (17). A sliding groove (24) is provided inside the installation bracket (19). A slider (23) is slidably installed inside the sliding groove (24). One end of the slider (23) is installed with a movable platform (22). Connecting platforms (21) are installed at the bottoms of both ends of the installation bracket (19); The battery parameter sensor (17) is connected to a storage battery discharge monitor (27) through a data cable. The ends of the live-line connector (1) and the zero-line connector (16) are connected to a lithium battery (28). The storage battery discharge monitor (27) and the lithium battery (28) are connected through a wire.

2. The single battery capacity detection device for battery pack balancing control according to claim 1, characterized in that: The electricity inspection mechanism (4) includes a contact piece (401), a connecting spring (402), a neon lamp (403), and a resistor (404). A connecting spring (402) is connected to one side of the contact piece (401). A neon lamp (403) is installed on one side of the connecting spring (402). A resistor (404) is connected to one side of the neon lamp (403).

3. The single battery capacity detection device for battery pack equalization control according to claim 2, characterized in that: The top of the contact piece (401) extends out of the housing (2). A perspective window (3) is installed on the surface of the housing (2) around the neon lamp (403). One side of the resistor (404) is connected to the metal elastic sheet (5).

4. A single battery capacity detection device for battery pack balancing control according to claim 1, characterized in that: The pressing mechanism (6) includes a fixing frame (601), a reset spring (602), a pressing plate (603), and a pushing plate (604). A reset spring (602) is installed inside the fixing frame (601). A pressing plate (603) is installed at the bottom of the reset spring (602). A pushing plate (604) penetrating the fixing frame (601) is installed at the bottom of the pressing plate (603).

5. The single battery capacity detection device for battery pack balancing control according to claim 4, characterized in that: The pressing plate (603) is movably installed inside the fixing frame (601). The top of the fixing frame (601) is connected to the inner wall of the insertion socket (10). An insulating block in contact with the metal elastic sheet (5) is installed at the bottom of the pushing plate (604).

6. The single battery capacity detection device for battery pack equalization control according to claim 1, characterized in that: A snap ring (13) is installed around the periphery of the protective cover (12), the distance between the snap rings (13) is greater than the length of the plug (15), and a card slot (11) adapted to the snap ring (13) is provided inside the socket (10).

7. A single battery capacity detection device for battery pack equalization control according to claim 1, characterized in that: A convex block (14) is installed around the periphery of the protective cover (12) on the other side of the protective shell (7), and insulating rubber sleeves are sleeved around the live wire connector (1) and the neutral wire connector (16).

8. A single battery capacity detection device for battery pack equalization control according to claim 1, characterized in that: A sticker (20) is installed on one side of the mounting bracket (19), and a display screen (18) is installed on the other side of the battery parameter sensor (17).

9. A single battery capacity detection device for battery pack equalization control according to any one of claims 1-8, characterized in that: A plurality of suspension holes (25) are provided at the top of one side of the mounting bracket (19), and an indicating platform (26) corresponding to the suspension holes (25) is installed on the top of the mounting bracket (19).

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