A battery base short circuit detection device

Abstract

This utility model discloses a battery base short-circuit detection device, comprising: a housing, the shape of which is adapted to the vehicle battery slot; an integrated circuit board, the integrated circuit board being installed inside the housing, and a main control chip electrically connected to the integrated circuit board; a terminal base, the terminal base being installed on the housing and electrically connected to the integrated circuit board; and a display screen, the display screen being installed on the housing and electrically connected to the integrated circuit board. This utility model designs the housing of the battery base short-circuit detection device to be identical in structure to the battery, allowing the housing to be directly inserted into the vehicle battery slot like a battery, making detection and battery replacement as convenient and quick. For operational vehicles, using this device can quickly detect whether the base terminals in the vehicle battery slot are short-circuited, avoiding unnecessary losses caused by short circuits in the base terminals during battery replacement.

Description

Technical Field

[0001] This utility model relates to the field of signal detection and protection equipment technology, and in particular to a short-circuit detection device for a battery base. Background Technology

[0002] Shared two-wheeled electric vehicles are a type of transportation that uses electricity to assist human riding. In recent years, the rapid popularization of shared two-wheeled electric vehicles has brought us great convenience and facilitated people's short-distance green travel. Shared two-wheeled electric vehicles generally use a battery swapping model to replenish energy, that is, replenishing energy by replacing batteries instead of charging. Battery swapping only takes 1-3 minutes, which is much faster than charging, greatly improving vehicle operating efficiency and avoiding long-term downtime caused by charging.

[0003] However, the inventors have discovered the following problems in the battery swapping process of shared two-wheeled electric vehicles: when a fully charged battery is reinserted into the battery slot of the shared two-wheeled electric vehicle, a short circuit may occur between the terminals of the base in the battery slot, which may trigger battery protection or communication signal abnormality after the battery is inserted. In severe cases, it may even cause the battery to catch fire, ultimately causing the operating vehicle to malfunction and resulting in losses. Utility Model Content

[0004] The purpose of this invention is to solve some problems existing in the prior art and to propose a battery base short circuit detection device. The device has the same shape as the battery and contains an integrated circuit board. The device can detect whether there is a short circuit between the base terminals in the vehicle battery compartment, ensuring that the operating vehicle can work normally.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: A short-circuit detection device for a battery base, comprising: A housing whose shape is adapted to the vehicle's battery compartment; An integrated circuit board is installed inside the housing, and a main control chip is electrically connected to the integrated circuit board; A terminal base, which is mounted on the housing and electrically connected to the integrated circuit board; and A display screen is mounted on the housing and electrically connected to the integrated circuit board.

[0006] In some embodiments, the terminal base is provided with a plurality of interfaces.

[0007] In some embodiments, a buzzer is also included, which is electrically connected to the integrated circuit board.

[0008] In some embodiments, a power supply interface is also included, which is electrically connected to the integrated circuit board.

[0009] In some embodiments, it further includes at least two buttons, which are electrically connected to the integrated circuit board.

[0010] In some embodiments, the housing includes an upper cover, a middle body, and a lower base, wherein the upper cover and the lower base are respectively fixedly installed at the upper and lower ends of the middle body.

[0011] In some embodiments, the intermediate body is a hollow structure.

[0012] In some embodiments, both the integrated circuit board and the display screen are fixedly mounted on the upper cover.

[0013] In some embodiments, the upper cover is provided with a handle.

[0014] In some embodiments, the lower base is provided with a mounting groove, and the terminal base is fixedly installed in the mounting groove.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This invention designs the housing of the battery base short circuit detection device to be identical to the structure of the battery. The housing can be directly inserted into the vehicle battery slot just like the battery, making detection and battery replacement as convenient and quick. For vehicles in operation, this device can quickly detect whether the base terminals in the vehicle battery slot are short-circuited, avoiding unnecessary losses caused by short circuits in the base terminals during battery replacement. Attached Figure Description

[0016] Figure 1 This is a three-dimensional short circuit detection device for battery base. Figure 1 ; Figure 2 This is a three-dimensional short circuit detection device for battery base. Figure 2 ; Figure 3 This is a cross-sectional view of the battery base short-circuit detection device; Figure 4 This is an exploded view of the battery base short-circuit detection device; Figure 5 This is the front view of the terminal base; Figure 6 This is a schematic diagram of the working principle of the battery base short circuit detection device; Figure 7 This is the circuit diagram illustrating the working principle of the battery base short-circuit detection device.

[0017] Figure label: 1. Housing, 101. Top cover, 1011. Handle, 102. Middle body, 103. Lower base, 1031. Mounting slot; 2. Integrated circuit board; 3. Terminal base; 4. Display screen; 5. Main control chip; 6. Buzzer; 7. Power supply interface; 8. Buttons. Detailed Implementation

[0018] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses consistent with some aspects of this application as detailed in the appended claims.

[0019] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, the technical or scientific terms used in this application should be understood in their ordinary sense by one of ordinary skill in the art to which this utility model pertains. The words “a” or “one” and similar terms used in this application specification and claims do not indicate a limitation of quantity, but rather indicate the presence of at least one. “A plurality” includes two, equivalent to at least two. The words “comprising” or “including” and similar terms mean that the element or object preceding “comprising” or “including” covers the element or object listed following “comprising” or “including” and its equivalents, and does not exclude other elements or objects. The words “connected” or “linked” and similar terms are not limited to physical or mechanical connections and can include electrical connections, whether direct or indirect. The singular forms “a,” “the,” and “the” used in this application specification and appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0020] like Figure 1-7 As shown, a battery base short-circuit detection device of one or more preferred embodiments of this application will be disclosed and described in the following description.

[0021] Please refer to the following for details. Figure 1-3A battery base short-circuit detection device includes a housing 1, an integrated circuit board 2, a terminal base 3, and a display screen 4. Specifically, the housing 1 has the same shape as the battery, meaning it is compatible with the vehicle battery slot and can be inserted into it like the battery. The integrated circuit board 2 is installed inside the housing 1 and is electrically connected to a main control chip 5. The terminal base 3 is installed on the housing 1 and electrically connected to the integrated circuit board 2, and is compatible with the terminals of the battery base inside the vehicle battery slot. The display screen 4 is installed on the housing 1 and electrically connected to the integrated circuit board 2. When the housing 1 is inserted into the vehicle battery slot, the terminal base 3 engages with the terminals of the battery base inside the vehicle battery slot. The terminal base 3 detects the resistance between the terminals of the battery base inside the vehicle battery slot and transmits the data to the main control chip 5. The main control chip 5 processes the data and sends it to the display screen 4, where the results are displayed.

[0022] Please refer to the following for details. Figure 1 and 4 The housing 1 includes an upper cover 101, a middle body 102, and a lower base 103. The upper cover 101 and the lower base 103 are respectively fixedly installed at the upper and lower ends of the middle body 102. In this embodiment, the upper cover 101, the middle body 102, and the lower base 103 are fixedly installed by screws. Specifically, the middle body 102 has multiple screw holes at its upper and lower ends, and the upper cover 101 and the lower base 103 have through holes corresponding to the screw holes. Screws pass through the through holes and are tightened in the screw holes, thereby achieving a fixed connection between the upper cover 101, the middle body 102, and the lower base 103.

[0023] Please refer to the following for details. Figure 3 The central main body 102 has a hollow structure, which has the advantage of being lightweight.

[0024] Please refer to the following for details. Figure 3 Both the integrated circuit board 2 and the display screen 4 are fixedly mounted on the upper cover 101. In this embodiment, the integrated circuit board 2 and the display screen 4 are fixedly mounted by screws. Specifically, the upper cover 101 has multiple screw holes inside, and the integrated circuit board 2 and the display screen 4 have through holes corresponding to the screw holes. Screws pass through the through holes and are tightened into the screw holes to achieve a fixed connection between the integrated circuit board 2, the display screen 4, and the upper cover 101.

[0025] In this embodiment, the upper cover 101 is provided with a slot, which is aligned with the display screen 4 and used to display the display screen 4.

[0026] Please refer to the following for details. Figure 1 The upper cover 101 is provided with a handle 1011, which makes it easy to pick up the device.

[0027] Please refer to the following for details. Figure 4The lower base 103 is provided with a mounting groove 1031, and the terminal base 3 is fixedly installed in the mounting groove 1031. In this embodiment, the integrated circuit board 2 and the display screen 4 are fixedly installed by screws. Specifically, the lower base 103 has multiple screw holes inside, which communicate with the bottom wall of the mounting groove 1031. The terminal base 3 has through holes corresponding to the screw holes. Screws pass through the through holes and are tightened in the screw holes, thereby achieving a fixed connection between the terminal base 3 and the lower base 103.

[0028] In this embodiment, the housing 1 is made of plastic.

[0029] In this embodiment, the main control chip 5 is an STM32 series chip.

[0030] In this embodiment, display screen 4 is an OLED display panel.

[0031] Please refer to the following for details. Figure 5 The terminal base 3 is provided with several interfaces. In this embodiment, the number of interfaces is 14. Different combinations of interfaces are electrically connected to form different interface groups. There are 5 interface groups, namely power+, power-, charging-, CAN-H and CAN-L. Specifically, terminal base 3 has 14 different interfaces, which are adapted to the terminals inside the vehicle battery compartment. For ease of understanding, the interfaces on terminal base 3 are labeled 1 to 14. Each interface has a terminal block on the back. Interfaces 1 and 8, and interfaces 7 and 14 form the power+ interface group; interfaces 4 and 11 form the power- interface group; interfaces 3 and 12 form the charging- interface group; interfaces 2 and 13 form the CAN-H interface group; and interfaces 6 and 7 form the CAN-L interface group. The terminals inside the vehicle battery compartment can also be divided in this way, resulting in a total of 5 groups of terminals inside the vehicle battery compartment. The resistance between any two groups of terminals inside the vehicle battery compartment needs to be tested. If the resistance between any two groups of terminals inside the vehicle battery compartment is less than a set value, it is considered abnormal. A total of 10 tests are required. Interfaces 5 and 10 are empty interfaces and do not need to be tested.

[0032] In this embodiment, CAN-H and CAN-L are CAN interfaces, which are commonly used communication interfaces in the prior art. Therefore, in other feasible embodiments, the communication interface can also be a commonly used UART interface, IIC interface, or SPI interface, etc.

[0033] Please refer to the following for details. Figure 3 A short circuit detection device for a battery base also includes a buzzer 6, which is electrically connected to an integrated circuit board 2. The buzzer 6 is directly controlled and driven by a main control chip 5 and serves as an alarm signal. When the resistance between two terminals is detected to be less than a set value, the buzzer 6 will sound an alarm.

[0034] Please refer to the following for details. Figure 1 A battery base short circuit detection device further includes a power supply interface 7, which is electrically connected to an integrated circuit board 2. It is powered by an external power source through the power supply interface 7. The external power source can be a power bank or other portable power source that supports the power supply interface 7.

[0035] In this embodiment, the power supply interface 7 is type-C, and the upper cover 101 has a slot on the side, in which the power supply interface 7 is hidden.

[0036] Please refer to the following for details. Figure 1 A battery base short-circuit detection device further includes two buttons 8, namely an ST button 8 and a QU button 8, which are electrically connected to an integrated circuit board 2. The T button 8 is the start button; pressing this button initiates the detection. The QU button 8, when briefly pressed, displays the device firmware version; when pressed for more than three seconds, it displays the resistance value between the terminal groups of the base in each vehicle battery compartment.

[0037] This utility model is a short-circuit detection device for a battery base, and its working principle is combined with the attached... Figure 6-7 illustrate: Please refer to the following for details. Figure 6 Connecting to an external power source via power interface 7, this battery base short-circuit detection device can be inserted into the vehicle battery slot like a regular battery. Once correctly inserted, the five different interface groups of terminal base 3 will match the terminal groups in the vehicle battery slot. Pressing the ST button 8 will perform a discharge operation, releasing the charge between the positive and negative terminals of the vehicle base power supply. After discharge, the terminal group detection stage begins, performing pairwise resistance tests on the terminal groups in the vehicle battery slot. If the resistance between any two terminals is less than the set value, it is considered abnormal, and NG will be displayed on the display screen 4, and the buzzer 6 will sound an alarm. If the resistance between all pairs of terminal groups is greater than the set value, the test passes, and OK will be displayed on the display screen 4.

[0038] Please refer to the following for details. Figure 7Specifically, when detecting a short circuit between power supply + and power supply -, the main control chip 5 controls SW_HA and SW_LB to output high-level signals. At this time, MOSFETs Q2 and Q5 are turned on. The main control chip 5 reads the voltage value of ADC1. If there is a short circuit between power supply + and power supply -, then the voltage value of ADC1 read by the main control chip 5 is equal to the on-state voltage drop of MOSFET Q5, which is much less than 0.1V. That is, the resistance values ​​of power supply + and power supply - can be calculated through the resistance value of R5, and compared with the set resistance value to determine the two interface groups. Is it normal? When detecting a short circuit between the power supply- and charging-, the main control chip 5 controls SW_HB and SW_LC to output high-level signals. At this time, MOSFETs Q4 and Q8 are turned on. The main control chip 5 reads the voltage value of ADC2 and calculates the resistance value between the power supply- and charging- based on the resistance value of resistor R10. Similarly, by controlling SW_HA and SW_LC to output high-level signals, the resistance value between the power supply+ and charging- can be detected. By controlling SW_HA and SW_LD to output high-level signals, the resistance value between the power supply+ and charging- can be detected. Based on the resistance value of resistor R5, the resistance between power supply + and CAN-H can be detected; by controlling SW_HA and SW_LE to output a high level through main control chip 5, the resistance between power supply + and CAN-L can be detected; by controlling SW_HB and SW_LD to output a high level through main control chip 5, the resistance between power supply - and CAN-H can be detected based on the resistance value of resistor R10; by controlling SW_HB and SW_LE to output a high level through main control chip 5, the resistance between power supply - and CAN-H can be detected based on the resistance value of resistor R10. The resistance between source- and CAN-L is measured; the main control chip 5 controls SW_HC and SW_LD to output high levels, and the resistance between charging- and CAN-H can be detected based on the resistance value of resistor R17; the main control chip 5 controls SW_HC and SW_LE to output high levels, and the resistance between charging- and CAN-L can be detected based on the resistance value of resistor R17; the main control chip 5 controls SW_HD and SW_LE to output high levels, and the resistance between CAN-H and CAN-L can be detected based on the resistance value of resistor R24. Ultimately, this achieves resistance detection between each pair of the five interfaces, i.e., short-circuit detection.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A short-circuit detection device for a battery base, characterized in that, include: Housing (1), the shape of which is adapted to the vehicle battery compartment; An integrated circuit board (2) is installed inside the housing (1), and a main control chip (5) is electrically connected to the integrated circuit board (2). Terminal base (3), which is mounted on the housing (1) and electrically connected to the integrated circuit board (2); as well as Display screen (4), which is mounted on the housing (1) and electrically connected to the integrated circuit board (2).

2. The battery base short-circuit detection device according to claim 1, characterized in that, The terminal base (3) is provided with several interfaces.

3. The battery base short-circuit detection device according to claim 1 or 2, characterized in that, It also includes a buzzer (6), which is electrically connected to the integrated circuit board (2).

4. The battery base short-circuit detection device according to claim 3, characterized in that, It also includes a power supply interface (7), which is electrically connected to the integrated circuit board (2).

5. The battery base short-circuit detection device according to claim 4, characterized in that, It also includes at least two buttons (8), which are electrically connected to the integrated circuit board (2).

6. The battery base short-circuit detection device according to claim 1, characterized in that, The housing (1) includes an upper cover (101), a middle body (102) and a lower base (103), with the upper cover (101) and the lower base (103) respectively fixedly installed on the upper and lower ends of the middle body (102).

7. The battery base short-circuit detection device according to claim 6, characterized in that, The intermediate main body (102) is a hollow structure.

8. The battery base short-circuit detection device according to claim 6, characterized in that, Both the integrated circuit board (2) and the display screen (4) are fixedly mounted on the upper cover (101).

9. The battery base short-circuit detection device according to claim 6, characterized in that, A handle (1011) is provided on the upper end cover (101).

10. The battery base short-circuit detection device according to claim 6, characterized in that, The lower base (103) is provided with a mounting groove (1031), and the terminal base (3) is fixedly installed in the mounting groove (1031).

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