Open circuit and short circuit detection assembly and open circuit and short circuit detection equipment

Abstract

The utility model provides an open circuit and short circuit detection assembly and open circuit and short circuit detection equipment. The open circuit and short circuit detection assembly comprises a control chip module, an input circuit and an alarm module. The control chip module is respectively connected with the input circuit and the alarm module; the input circuit is respectively connected with a power port and a communication port of a battery pack of a product to be detected through the quick release interface; the control chip module is used for receiving the first measurement voltage and the second measurement voltage sent by the input circuit, determining that the power supply port is short-circuited when the first measurement voltage is not in a first preset measurement voltage range, and sending a first alarm signal to the alarm module; and when the second measurement voltage is not in the second preset measurement voltage range, determining that the communication port is short-circuited, and sending a second alarm signal to the alarm module. The open circuit and short circuit detection assembly is designed to carry out open circuit and short circuit testing on the electric tool battery pack packaged through glue pouring, so that the fault rate of products such as electric tools is reduced, and the use safety of the products such as the electric tools is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of battery safety, in particular to an open circuit and short circuit detection component and an open circuit and short circuit detection device. Background Art

[0002] At present, products such as power tools are all packaged by glue, and hardware-related tests cannot be performed before power is turned on. At the same time, SMT (Surface Mounted Technology) packaging components are becoming increasingly miniaturized. Sometimes when a product is hit, it is difficult to visually detect whether there is a problem with the battery pack inside the product. If there is a short circuit in the battery pack inside the product, powering on will cause damage to the circuit, amplification of the fault, and even burn expensive test equipment. Utility Model Content

[0003] In view of this, the purpose of the utility model is to provide an open circuit and short circuit detection component and an open circuit and short circuit detection device, so as to reduce the failure rate of products such as electric tools, and thus ensure the safe use of products such as electric tools.

[0004] In the first aspect, an embodiment of the utility model provides an open circuit and short circuit detection component, including: a control chip module, an input circuit and an alarm module; the control chip module is respectively connected to the input circuit and the alarm module; the input circuit is respectively connected to the power port and the communication port of the battery pack of the product to be detected through a quick-release interface; the control chip module is used to receive a first measurement voltage and a second measurement voltage sent by the input circuit, and when the first measurement voltage is not within a first preset measurement voltage range, it is determined that the power port is short-circuited, and a first alarm signal is sent to the alarm module; when the second measurement voltage is not within a second preset measurement voltage range, it is determined that the communication port is short-circuited, and a second alarm signal is sent to the alarm module.

[0005] Furthermore, the open circuit and short circuit detection component also includes: the open circuit and short circuit detection component also includes: a power supply circuit; the power supply circuit includes a second socket; the second socket is connected to the input power supply; pins 2 and 5 of the second socket are used to power the open circuit and short circuit detection component.

[0006] Furthermore, the input circuit includes: an A1 socket, a fourth socket, a fifteenth resistor, a sixteenth resistor, an eighteenth resistor, a thirteenth resistor and a seventeenth resistor; the fourth socket is connected to the battery pack of the product to be detected; the control chip module is connected to the A1 socket; the first end of the fifteenth resistor and the first end of the eighteenth resistor are respectively connected to the power supply circuit; pin 1 of the fourth socket is respectively connected to the second end of the fifteenth resistor and the first end of the sixteenth resistor, pin 2 is connected to the second end of the eighteenth resistor, and pin 3 is respectively connected to the first end of the seventeenth resistor and the second end of the thirteenth resistor; pin 2 of the A1 socket is connected to the second end of the sixteenth resistor, and pin 1 is connected to the first end of the thirteenth resistor; pin 4 of the fourth socket and the second end of the seventeenth resistor are both grounded; the input circuit is used to detect the first measurement voltage of the power port and the second measurement voltage of the communication port of the battery pack of the product to be detected, and send the first measurement voltage and the second measurement voltage to the control chip module, so that the control chip module determines the state of the battery pack of the product to be detected according to the first measurement voltage and the second measurement voltage.

[0007] Furthermore, the alarm module also includes: a buzzer alarm circuit; the buzzer alarm circuit is connected to the filter circuit; the buzzer alarm circuit includes a buzzer, a third transistor, a fifty-third resistor and a jumper; the jumper is connected to the control chip module, and pin 1 is connected to the first end of the fifty-third resistor; the second end of the fifty-third resistor is connected to the first end of the third transistor; the buzzer is respectively connected to the filter circuit and the third end of the third transistor; the buzzer alarm circuit is used to alarm according to the first alarm signal sent by the control chip module.

[0008] Furthermore, the alarm module also includes: an alarm light module; the alarm light module includes a third connector, a connected first light-emitting diode and a fourth resistor, a connected second light-emitting diode and a fifth resistor, and a connected third light-emitting diode and a sixth resistor; the first ends of the first light-emitting diode, the second light-emitting diode and the third light-emitting diode are respectively connected to the power supply circuit; the second end of the fourth resistor is connected to pin 4 of the third connector; the second end of the fifth resistor is connected to pin 6 of the third connector; the second end of the sixth resistor is connected to pin 7 of the third connector; the third connector is connected to the control chip module; the alarm light module is used to light up the light according to the second alarm signal sent by the control chip module.

[0009] Furthermore, the first light emitting diode lights up green; the second light emitting diode lights up yellow; and the third light emitting diode lights up red.

[0010] In the second aspect, an embodiment of the utility model provides an open circuit and short circuit detection device, including a housing and a PCB mainboard, and also includes an open circuit and short circuit detection component of any one of the above 7 items; the open circuit and short circuit detection component is arranged on the PCB mainboard; the PCB mainboard is arranged in the housing.

[0011] Furthermore, the open circuit and short circuit detection device includes: a quick-connect socket; the quick-connect socket is arranged on the PCB main board and is connected to the open circuit and short circuit detection component.

[0012] Furthermore, the shell is a transparent acrylic shell.

[0013] The embodiment of the utility model provides an open circuit and short circuit detection component and an open circuit and short circuit detection device, including: a control chip module, an input circuit and an alarm module; the control chip module is connected to the input circuit and the alarm module respectively; the input circuit is connected to the power port and the communication port of the battery pack of the product to be detected respectively through a quick release interface; the control chip module is used to receive the first measurement voltage and the second measurement voltage sent by the input circuit, when the first measurement voltage is not within the first preset measurement voltage range, it is determined that the power port is short-circuited, and a first alarm signal is sent to the alarm module; when the second measurement voltage is not within the second preset measurement voltage range, it is determined that the communication port is short-circuited, and a second alarm signal is sent to the alarm module. In this method, an open circuit and short circuit detection component is designed to perform open circuit and short circuit tests on the glue-filled encapsulated power tool battery pack, thereby reducing the failure rate of products such as power tools, thereby ensuring the safety of the use of products such as power tools.

[0014] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by practicing the utility model. The purpose and other advantages of the utility model are realized and obtained by the structures specifically pointed out in the description, claims and drawings.

[0015] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of an open circuit and short circuit detection component provided in Embodiment 1 of the present utility model;

[0018] Figure 2 A schematic diagram of the main chip of the control chip module provided in the first embodiment of the utility model;

[0019] Figure 3 A schematic diagram of a power supply circuit provided in Embodiment 1 of the present utility model;

[0020] Figure 4 A schematic diagram of a filter circuit provided in Embodiment 1 of the present utility model;

[0021] Figure 5 A schematic diagram of an input circuit provided in Embodiment 1 of the present utility model;

[0022] Figure 6 A schematic diagram of power port detection provided in Embodiment 1 of the present utility model;

[0023] Figure 7 A schematic diagram of communication port detection provided in Embodiment 1 of the present utility model;

[0024] Figure 8 A schematic diagram of an alarm module provided in Embodiment 1 of the present utility model;

[0025] Fig. 9 A schematic diagram of a buzzer alarm circuit provided in Embodiment 1 of the present utility model;

[0026] Fig.10 A schematic diagram of an open circuit and short circuit detection device provided in Embodiment 2 of the present utility model;

[0027] Fig.11 A schematic diagram of the top surface of a PCB mainboard provided in Embodiment 2 of the present utility model;

[0028] Fig.12 A schematic diagram of the bottom surface of a PCB mainboard provided in Embodiment 2 of the present utility model;

[0029] Fig.13 A schematic diagram of a PCB mainboard circuit provided for the second embodiment of the utility model;

[0030] Fig.14 A physical picture of the open circuit and short circuit detection device provided in the second embodiment of the utility model.

[0031] Icons: 1-control chip module; 2-input circuit; 3-alarm module; 4-power supply circuit; 5-filter circuit; 6-buzzer alarm circuit; 7-alarm light module; 11-housing; 12-PCB mainboard; 13-open circuit and short circuit detection component; 14-quick-connect socket; U1-main chip; J2-second socket; C1-filter capacitor; JA1-A1 socket; J4-fourth socket; J3-third socket; J8-jumper; R15-fifteenth resistor; R16-sixteenth resistor; R18-eighteenth resistor; R13-thirteenth resistor; R17-seventeenth resistor; JSSpeak-buzzer; Q3-third transistor; R53-fifty-third resistor; R56-fifty-sixth resistor; D1-first light-emitting diode; R4-fourth resistor; D2-second light-emitting diode; R5-fifth resistor; D3-third light-emitting diode; R6-sixth resistor. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] To facilitate understanding of this embodiment, the embodiment of the utility model is described in detail below.

[0034] Embodiment 1:

[0035] Figure 1 A schematic diagram of an open circuit and short circuit detection component provided in Example 1 of the utility model.

[0036] Reference Figure 1 The open circuit and short circuit detection component includes: a control chip module 1, an input circuit 2 and an alarm module 3; the control chip module 1 is connected to the input circuit 2 and the alarm module 3 respectively.

[0037] Here, the control chip module 1 is a MCU (Microcontroller Unit).

[0038] Reference Figure 2 The control chip module 1 is composed of a main chip U1 and its auxiliary circuits. The main chip U1 is connected to the input circuit 2 through the (ADC0) PC1 pin and the (ADC1) PC1 pin. The (ADC0) PC1 pin is used to obtain the first measurement voltage, and the (ADC1) PC1 pin is used to obtain the second measurement voltage.

[0039] The input circuit 2 is connected to the power port and the communication port of the battery pack of the product to be tested respectively through the quick release interface.

[0040] Here, the power port refers to the positive pole of the battery pack. By performing an open circuit and short circuit test on the power port, it can be determined whether there is a short circuit inside the battery pack to ensure the circuit safety of the battery pack itself.

[0041] The communication port refers to the interface connecting the battery pack of the product to be tested and the BMS (Battery Management System) of the product to be tested. The communication port of the battery pack of the product to be tested is connected to the BMS through the CAN bus. The BMS can detect the status, temperature, voltage and other information of the battery pack of the product to be tested, and perform necessary control and management. By performing an open circuit and short circuit test on the communication port of the battery pack of the product to be tested, it is determined whether the communication between the battery pack of the product to be tested and the BMS is short-circuited.

[0042] The control chip module 1 is used to receive the first measurement voltage and the second measurement voltage sent by the input circuit 2. When the first measurement voltage is not within the first preset measurement voltage range, it is determined that the power port is short-circuited and a first alarm signal is sent to the alarm module 3; when the second measurement voltage is not within the second preset measurement voltage range, it is determined that the communication port is short-circuited and a second alarm signal is sent to the alarm module 3.

[0043] Here, the first preset measurement voltage range and the second preset measurement voltage range are both preset according to actual conditions.

[0044] In one embodiment, referring to Figure 3 The open circuit and short circuit detection component also includes: a power supply circuit 4; the power supply circuit 4 includes a second socket J2; the second socket J2 is connected to the input power supply; a filter circuit 5; the filter circuit 5 is connected to pins 2 and 5 of the power supply circuit 4.

[0045] Here, the input power supply is a 5V regulated power supply.

[0046] Pins 2 and 5 of the second connector J2 are used to supply power to the open circuit and short circuit detection component.

[0047] In one embodiment, referring to Figure 4 The open circuit and short circuit detection component also includes: a filter circuit 5; the filter circuit 5 is connected to the 2nd and 5th pins of the power circuit 4; the filter circuit 5 includes a filter capacitor C1; the first end of the filter capacitor C1 is connected to the power circuit 4, and the second end of the filter capacitor C1 is grounded.

[0048] The filter circuit 5 is used to help the open circuit and short circuit detection component reduce noise such as ripples and interference in the signal, so as to provide a smoother DC output and protect subsequent circuits from unintentional interference.

[0049] In one embodiment, referring to Figure 5 The input circuit 2 includes: an A1 socket JA1, a fourth socket J4, a fifteenth resistor R15, a sixteenth resistor R16, an eighteenth resistor R18, a thirteenth resistor R13 and a seventeenth resistor R17; the fourth socket J4 is connected to the battery pack of the product to be detected.

[0050] The control chip module 1 is connected to the A1 socket JA1; the first end of the fifteenth resistor R15 and the first end of the eighteenth resistor R18 are respectively connected to the power supply circuit 4; the pin 1 of the fourth socket J4 is respectively connected to the second end of the fifteenth resistor R15 and the first end of the sixteenth resistor R16, the pin 2 is connected to the second end of the eighteenth resistor R18, and the pin 3 is respectively connected to the first end of the seventeenth resistor R17 and the second end of the thirteenth resistor R13; the pin 2 of the A1 socket is connected to the second end of the sixteenth resistor R16, and the pin 1 is connected to the first end of the thirteenth resistor R13; the pin 4 of the fourth socket J4 and the second end of the seventeenth resistor R17 are both grounded.

[0051] Input circuit 2 is used to detect a first measurement voltage at a power port and a second measurement voltage at a communication port of a battery pack of a product to be detected, and send the first measurement voltage and the second measurement voltage to control chip module 1, so that control chip module 1 determines a state of the battery pack of the product to be detected based on the first measurement voltage and the second measurement voltage.

[0052] Specifically, refer to Figure 6 When the fourth connector J4 is connected to the battery pack of the product to be tested, it is equivalent to connecting the second end of the fifteenth resistor R15 to the positive power supply terminal (B+) of the battery pack of the product to be tested, and the negative terminal of the battery pack is grounded. At this time, the positive terminal of the product to be tested can form a first equivalent resistance RL to the ground, assuming that RL is about 100KΩ. When the fourth connector J4 is connected to the battery pack of the product to be tested, it is equivalent to connecting a 100K fifteenth resistor R15 in series with the positive terminal (B+) of the battery pack of the product to be tested, and the power supply voltage U in is 5V, at this time the first measured voltage U on B+ out1 :

[0053] When the power port of the battery pack of the product to be tested operates normally, the first measured voltage at B+ should be 2.5 V. The corresponding first preset measurement voltage range is set according to the first measured voltage.

[0054] When the first measured voltage is less than 2V, or close to 0V, the control chip module 1 determines that the power port of the battery pack of the product to be tested is short-circuited. The control chip module 1 sends a control signal to the alarm module 3, so that the alarm light turns red and the buzzer JSSpeak sounds long to sound an alarm.

[0055] When the battery pack of the product to be detected is greater than 3V, or close to 5V, the control chip module 1 determines that the open circuit and short circuit detection component is in a no-load standby state. The control chip module 1 sends a control signal to the alarm module 3, so that the alarm light turns yellow.

[0056] Reference Figure 7 , when the fourth connector J4 is connected to the battery pack of the product to be tested, it is equivalent to that the second end of the eighteenth resistor R18 is connected to the CAN_H (CAN high) signal line of the CAN bus; the first end of the seventeenth resistor R17 is connected to the CAN_L (CAN low) signal line of the CAN bus, and the second equivalent resistor RLcan is between CAN_H and CAN_L. Assuming that RLcan is 203Ω, the seventeenth resistor R17 is 1KΩ, the eighteenth resistor R18 is 1KΩ, and the supply voltage U in is 5V. According to the series voltage division formula, the second measured voltage U at the CAN_L end of the battery pack of the product to be tested is out2 for:

[0057] The second measured voltage of the communication port of the battery pack of the product to be tested in a normal state is 2.27 V. The corresponding second preset measured voltage range is set according to the second measured voltage.

[0058] When the second measured voltage is not within + / -0.1V of 2.27V, the control chip module 1 determines that the communication port of the battery pack of the product to be tested has a short circuit or an open circuit. The control chip module 1 sends a control signal to the alarm module 3 to light up the red light of the alarm lamp, so that the buzzer JSSpeak will sound for 1 second and stop for 1 second in an alternating manner until the user removes the product and stops the alarm and returns to the standby state.

[0059] In one embodiment, referring to Figure 8 The alarm module 3 also includes: a buzzer alarm circuit 6; the buzzer alarm circuit 6 is connected to the filter circuit 5.

[0060] Reference Fig. 9 The buzzer alarm circuit 6 includes a buzzer JSSpeak, a third transistor Q3, a fifty-third resistor R53 and a jumper J8; the jumper J8 is connected to the control chip module, and pin 1 is connected to the first end of the fifty-third resistor R53; the second end of the fifty-third resistor R53 is connected to the first end of the third transistor Q3; the buzzer JSSpeak is respectively connected to the filter circuit 5 and the third end of the third transistor Q3.

[0061] Here, the first end of the fifty-sixth resistor R56 is connected to the connection line between the second end of the fifty-third resistor R53 and the first end of the third transistor Q3. The second end of the third transistor Q3 and the second end of the fifty-sixth resistor R56 are grounded respectively. The buzzer JSSpeak is a 5V buzzer JSSpeak.

[0062] Reference Figure 2 , jumper J8 is connected to the PB3 pin of the main chip U1.

[0063] The buzzer alarm circuit is used to alarm according to the first alarm signal sent by the control chip module. Here, when the control chip module 1 determines that there is a short circuit in the power port, a control signal is sent to the buzzer alarm circuit to make the buzzer JSSpeak keep beeping and alarming until the user removes the product to be detected and then stops the alarm and returns to the standby state. When the control chip module 1 determines that there is a short circuit or open circuit in the communication port, a control signal is sent to the buzzer alarm circuit to make the buzzer JSSpeak alarm in an alternating manner of beeping for 1 second and stopping for 1 second until the user removes the product to be detected and then stops the alarm and returns to the standby state.

[0064] In one embodiment, referring to Figure 8 The alarm module 3 also includes: an alarm light module 7; the alarm light module 7 includes a third socket J3, a connected first light-emitting diode D1 and a fourth resistor R4, a connected second light-emitting diode D2 and a fifth resistor R5, and a connected third light-emitting diode D3 and a sixth resistor R6; the first ends of the first light-emitting diode D1, the second light-emitting diode D2 and the third light-emitting diode D3 are respectively connected to the power supply circuit 4; the second end of the fourth resistor R4 is connected to the 4th pin of the third socket J3; the second end of the fifth resistor R5 is connected to the 6th pin of the third socket J3; the second end of the sixth resistor R6 is connected to the 7th pin of the third socket J3; the third socket J3 is connected to the control chip module.

[0065] Here, the first light emitting diode D1 lights up green; the second light emitting diode D2 lights up yellow; and the third light emitting diode D3 lights up red.

[0066] When the control chip module 1 determines that the open circuit and short circuit detection components are unloaded, the control alarm light turns yellow, indicating standby. When the control chip module 1 determines that there is a short circuit or open circuit in the communication port or power port, the control alarm light turns red, indicating a fault. When the control chip module 1 does not detect a short circuit or open circuit in the communication port or power port, the control alarm light turns green, indicating a pass.

[0067] The embodiment of the utility model provides an open circuit and short circuit detection component, including: a control chip module, an input circuit and an alarm module; the control chip module is connected to the input circuit and the alarm module respectively; the input circuit is connected to the power port and the communication port of the battery pack of the product to be detected respectively through a quick release interface; the control chip module is used to receive the first measurement voltage and the second measurement voltage sent by the input circuit, when the first measurement voltage is not within the first preset measurement voltage range, it is determined that the power port is short-circuited, and a first alarm signal is sent to the alarm module; when the second measurement voltage is not within the second preset measurement voltage range, it is determined that the communication port is short-circuited, and a second alarm signal is sent to the alarm module. In this method, an open circuit and short circuit detection component is designed to perform open circuit and short circuit tests on the power port and the communication port of the glue-filled encapsulated power tool battery pack respectively, thereby reducing the failure rate of products such as power tools, and thus ensuring the safety of the use of products such as power tools.

[0068] Embodiment 2:

[0069] Fig.10 Schematic diagram of the open circuit and short circuit detection equipment provided in the second embodiment of the utility model.

[0070] Fig.11 This is a schematic diagram of the top surface of a PCB mainboard provided in Embodiment 2 of the present utility model.

[0071] Fig.12 This is a schematic diagram of the bottom surface of the PCB mainboard provided in Example 2 of the utility model.

[0072] Fig.13 This is a schematic diagram of a PCB mainboard circuit provided in Embodiment 2 of the present utility model.

[0073] Reference Fig.10 The open circuit and short circuit detection device includes a housing 11 and a PCB main board 12, and also includes the above-mentioned open circuit and short circuit detection component 13; the open circuit and short circuit detection component 13 is arranged on the PCB main board 12; the PCB main board 12 is arranged in the housing 11.

[0074] Here, the PCB main board 12 (printed circuit board) is an Arduino UNO R3 development board.

[0075] In one embodiment, the open circuit and short circuit detection device includes: a quick-connect socket 14 ; the quick-connect socket 14 is arranged on the PCB main board 12 and connected to the open circuit and short circuit detection component 13 .

[0076] Here, the quick-connect interface is a modular component. When applied to different products, different quick-connect interfaces can be replaced. It is convenient and quick, making it easier to disassemble and assemble for future maintenance, replacement and upgrade, and ordinary users can operate it.

[0077] Fig.14 A physical picture of the open circuit and short circuit detection device provided in the second embodiment of the utility model.

[0078] In one embodiment, referring to Fig.14 The shell 11 is a transparent acrylic shell 11.

[0079] Here, the main body of the housing 11 is a rectangular parallelepiped, which is convenient for placement and storage.

[0080] The housing 11 is made of a transparent acrylic material, which is effective in transmitting light, so that the user can more conveniently observe the on and off information of the warning light on the open circuit and short circuit detection component 13.

[0081] An embodiment of the utility model provides an open circuit and short circuit detection device. In this method, by encapsulating the open circuit and short circuit detection component into a structure in a transparent shell, the user can be clearly reminded of the working status of the open circuit and short circuit detection device and whether there is a short circuit or an open circuit in the product to be detected, thereby reducing the failure rate of products such as power tools and ensuring the safe use of products such as power tools.

[0082] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system and device described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0083] In addition, in the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0084] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the utility model can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the utility model. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc., which can store program codes.

[0085] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are 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 cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0086] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the utility model, which are used to illustrate the technical solution of the utility model, rather than to limit it. The protection scope of the utility model is not limited thereto. Although the utility model is described in detail with reference to the above-mentioned embodiments, ordinary technicians in this field should understand that any technician familiar with the technical field can still modify the technical solution recorded in the above-mentioned embodiments within the technical scope disclosed by the utility model, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solution of the embodiment of the utility model, and should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.

Claims

1. An open circuit and short circuit detection component, characterized in that: include: A control chip module, an input circuit and an alarm module; the control chip module is connected to the input circuit and the alarm module respectively; The input circuit is connected to the power port and the communication port of the battery pack of the product to be tested respectively through the quick release interface; The control chip module is used to receive the first measurement voltage and the second measurement voltage sent by the input circuit. When the first measurement voltage is not within the first preset measurement voltage range, it is determined that the power port is short-circuited and a first alarm signal is sent to the alarm module; when the second measurement voltage is not within the second preset measurement voltage range, it is determined that the communication port is short-circuited and a second alarm signal is sent to the alarm module.

2. The open circuit and short circuit detection component according to claim 1, characterized in that: The open circuit and short circuit detection component further includes: a power supply circuit; the power supply circuit includes a second socket; the second socket is connected to the input power supply; Pins 2 and 5 of the second socket are used to supply power to the open circuit and short circuit detection component.

3. The open circuit and short circuit detection component according to claim 2, characterized in that: The open circuit and short circuit detection component also includes: a filter circuit; the filter circuit is connected to pins 2 and 5 of the power circuit; the filter circuit includes a filter capacitor; the first end of the filter capacitor is connected to the power circuit, and the second end of the filter capacitor is grounded.

4. The open circuit and short circuit detection component according to claim 3, characterized in that: The input circuit includes: an A1 socket, a fourth socket, a fifteenth resistor, a sixteenth resistor, an eighteenth resistor, a thirteenth resistor and a seventeenth resistor; the fourth socket is connected to the battery pack of the product to be tested; The control chip module is connected to the A1 socket; the first end of the fifteenth resistor and the first end of the eighteenth resistor are respectively connected to the power circuit; the pin 1 of the fourth socket is respectively connected to the second end of the fifteenth resistor and the first end of the sixteenth resistor, the pin 2 is connected to the second end of the eighteenth resistor, and the pin 3 is respectively connected to the first end of the seventeenth resistor and the second end of the thirteenth resistor; the pin 2 of the A1 socket is connected to the second end of the sixteenth resistor, and the pin 1 is connected to the first end of the thirteenth resistor; the pin 4 of the fourth socket and the second end of the seventeenth resistor are both grounded; The input circuit is used to detect the first measurement voltage of the power port and the second measurement voltage of the communication port of the battery pack of the product to be detected, and send the first measurement voltage and the second measurement voltage to the control chip module, so that the control chip module determines the state of the battery pack of the product to be detected based on the first measurement voltage and the second measurement voltage.

5. The open circuit and short circuit detection component according to claim 4, characterized in that: The alarm module further comprises: a buzzer alarm circuit; the buzzer alarm circuit is connected to the filter circuit; The buzzer alarm circuit includes a buzzer, a third transistor, a fifty-third resistor and a jumper; the jumper is connected to the control chip module, and pin 1 is connected to the first end of the fifty-third resistor; the second end of the fifty-third resistor is connected to the first end of the third transistor; the buzzer is connected to the filter circuit and the third end of the third transistor respectively; The buzzer alarm circuit is used to alarm according to the first alarm signal sent by the control chip module.

6. The open circuit and short circuit detection component according to claim 5, characterized in that: The alarm module also includes: an alarm light module; The warning light module includes a third connector, a first light emitting diode and a fourth resistor connected, a second light emitting diode and a fifth resistor connected, and a third light emitting diode and a sixth resistor connected; the first ends of the first light emitting diode, the second light emitting diode and the third light emitting diode are respectively connected to the power supply circuit; the second end of the fourth resistor is connected to the 4th pin of the third connector; the second end of the fifth resistor is connected to the 6th pin of the third connector; the second end of the sixth resistor is connected to the 7th pin of the third connector; the third connector is connected to the control chip module; The alarm light module is used to light up the light according to the second alarm signal sent by the control chip module.

7. The open circuit and short circuit detection component according to claim 6, characterized in that: The first light emitting diode lights up green; the second light emitting diode lights up yellow; and the third light emitting diode lights up red.

8. An open circuit and short circuit detection device, characterized in that: It comprises a housing and a PCB mainboard, and also comprises the open circuit and short circuit detection component described in any one of claims 1 to 7; the open circuit and short circuit detection component is arranged on the PCB mainboard; the PCB mainboard is arranged in the housing.

9. The open circuit and short circuit detection device according to claim 8, characterized in that: The open circuit and short circuit detection device comprises: a quick-connect socket; the quick-connect socket is arranged on the PCB main board and is connected to the open circuit and short circuit detection component.

10. The open circuit and short circuit detection device according to claim 8, characterized in that: The shell is a transparent acrylic shell.

Images