System for detecting line sequence of acquisition line of battery pack

Abstract

The utility model relates to the technical field of battery pack line sequence detection, and discloses a system for detecting the line sequence of a battery pack acquisition line, which comprises a docking port and a display module, the docking port comprises a plurality of line banks, the line banks are sequentially connected with each battery of a battery pack, and the display module comprises a plurality of display circuits. Each display circuit is connected between two adjacent interfaces of the line bank, each display circuit comprises a switch tube Q37 and a switch tube Q2, a signal B0 input by the line bank passes through a resistor R19 and then is input to a base electrode of the switch tube Q37, a collector electrode of the switch tube Q37 is connected with a resistor R20 in series and then is connected with a base electrode of the switch tube Q2, and the switch tube Q37 and the switch tube Q2 are connected in series. A collector electrode of the switch tube Q2 is connected in series with a resistor R22 and a diode LED19 and then is connected to a main power supply LEDCOM end; the circuit diagram is simple in structure and easy to implement, whether the installation sequence of the collection lines is correct or not in the production process can be rapidly detected, visual display can be achieved through the light-emitting diodes, and the positions of the collection lines with wrong installation can be rapidly located by checking whether light is emitted or not.

Description

Technical Field

[0001] This utility model relates to the field of battery pack wiring sequence detection technology, specifically to a battery pack wiring sequence detection system. Background Technology

[0002] In today's battery pack manufacturing industry, with the ever-increasing demands on battery performance from various electronic devices, the battery pack manufacturing process has become a critical link. Battery packs typically need to connect to the Battery Management System (BMS) via signal acquisition cables to achieve accurate monitoring and effective control of the battery pack's status. Currently, in the actual production process of battery packs, signal acquisition cables are mostly connected to the BMS one by one by manual soldering. However, this manual operation method has significant limitations. On the one hand, due to fatigue and negligence during long hours of repetitive work, operators are prone to missing connections on the acquisition cables. This will prevent the BMS from obtaining complete battery information, thus affecting its management functions of the battery pack. On the other hand, even if all acquisition cables are connected, it is difficult to completely avoid misconnections. Once the wiring sequence is incorrect, the BMS will receive chaotic battery signals, unable to properly parse and process this data. This will prevent accurate monitoring of key parameters such as battery voltage, current, and temperature, and hinder the effective implementation of overcharge protection, over-discharge protection, and equalization control functions. In severe cases, incorrect signal feedback can even damage the internal circuitry of the BMS, reducing the safety and reliability of the battery pack and affecting the overall product performance and lifespan. Therefore, it is necessary to check the order of the wiring. Existing detection methods are complex and difficult to implement. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a battery pack acquisition line sequence system.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A battery pack detection acquisition line sequence system includes an interface and a display module. The interface includes several terminal blocks, which are sequentially connected to each battery in the battery pack. The display module includes several display circuits, each of which is connected between two adjacent interfaces of the terminal blocks. Each display circuit includes a switching transistor Q37 and a switching transistor Q2. The signal B0 input from the terminal block is passed through resistor R19 and then input to the base of the switching transistor Q37. The collector of the switching transistor Q37 is connected in series with resistor R20 and then to the base of the switching transistor Q2. The emitter of the switching transistor Q2 is grounded. The collector of the switching transistor Q2 is connected in series with resistor R22 and diode LED19 and then to the main power supply LEDCOM terminal.

[0006] In this invention, preferably, the emitter of the switching transistor Q37 is connected to the input signal B1 of the adjacent port of the terminal block, and the input signal B1 is connected to the same display circuit.

[0007] In this invention, preferably, the display circuits are evenly arranged and connected to the main power supply LEDCOM terminal.

[0008] In this invention, preferably, six display circuits are arranged in a row, corresponding to the six batteries in the battery pack.

[0009] In this utility model, preferably, a total of 3 rows of display circuits are provided.

[0010] In this invention, preferably, some ports of the terminal block are further connected in series with Zener diodes and then connected to the main power supply LEDCOM terminal.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] The system circuit diagram of this utility model has a simple structure and is easy to implement. It can quickly detect whether the sequence of the acquisition lines is installed correctly during the production process. The LEDs can be used to display the information intuitively, and the incorrectly installed acquisition lines can be quickly located by checking whether they are lit. Attached Figure Description

[0013] Figure 1 This is a display circuit diagram of a battery pack detection acquisition line sequence system according to the present invention.

[0014] Figure 2 This is a circuit diagram of the terminal block of the battery pack detection acquisition line sequence system described in this utility model. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0018] Please see Figure 1 and Figure 2 This utility model provides a battery pack acquisition cable sequence detection system, which can detect whether the acquisition cable sequence is disordered and accurately locate the error position through indicator lights. Specifically, it includes an interface and a display module. The interface includes several terminal blocks, which are sequentially connected to each battery in the battery pack. The display module includes several display circuits, each connected between two adjacent interfaces of the terminal block. Each display circuit includes a switching transistor Q37 and a switching transistor Q2. The signal B0 input from the terminal block is passed through resistor R19 and input to the base of the switching transistor Q37. The collector of the switching transistor Q37 is connected in series with resistor R20 and then to the base of the switching transistor Q2. The emitter of the switching transistor Q2 is grounded. The collector of the switching transistor Q2 is connected in series with resistor R22 and diode LED19 and then to the main power supply LEDCOM terminal. The emitter of the switching transistor Q37 is connected to the input signal B1 of the adjacent port of the terminal block, and the input signal B1 is also connected to the same display circuit.

[0019] Specifically, there are four terminal blocks, which can be expanded as needed. The corresponding display module contains multiple display circuits, each corresponding to a battery in the battery pack. The circuit structure and implementation principle of each display circuit are identical. Taking one circuit as an example, when terminal block P1 is connected to the battery pack's acquisition terminal, input signals B0 and B1 will have a voltage corresponding to the battery. If the voltage is correct, B1 will be higher than B0. At this time, B1 forms a loop through the emitter to the base of switching transistor Q37, then through resistor R19 to B0, turning on the PNP switching transistor Q37. B1 then passes through the emitter to the collector, through resistor R20 to the base of switching transistor Q2, turning on Q2. LED19 then receives power from the main power supply terminal of LEDCOM, passes through resistor R22 to the collector and emitter of switching transistor Q2, forming a loop, and the LED lights up. When the battery pack wiring sequence is reversed, the PN junction of switch Q37 is reverse-biased, and switch Q37 does not conduct. Switch Q2 is pulled down by pull-down resistor R21, and switch Q2 does not conduct. LED19 is not powered and does not light up, proving that the battery wiring sequence in this channel is incorrect. This allows for a direct visual identification of which part of the wiring is faulty, reducing troubleshooting difficulty and time, and improving efficiency.

[0020] The display circuits are evenly arranged and connected to the main power supply LEDCOM terminal. Some ports of the terminal block are also connected in series with Zener diodes before being connected to the main power supply LEDCOM terminal. This allows the highest total voltage under different series configurations to be collected at the main power supply LEDCOM terminal, providing the overall voltage to the display circuits. This arrangement effectively avoids interference or damage to the display circuits caused by power supply voltage fluctuations, ensuring the stable operation of the entire detection system.

[0021] In one specific embodiment, six display circuits are arranged in a row, corresponding to the six batteries in the battery pack, for a total of three rows of display circuits. This layout closely matches the layout of the battery pack wiring, making it easy to implement and operate.

[0022] In one specific embodiment, in the layout of the PCB board, each LED in the display circuit is marked with the letters "BATn". If the corresponding LED's acquisition line is connected correctly, the LED will light up; if incorrect, the corresponding LED will not light up. The markings on the PCB can quickly locate the corresponding battery acquisition string number, which needs to be checked.

[0023] The above description is a detailed description of the preferred embodiments of the present utility model. However, the embodiments are not intended to limit the scope of the patent application of the present utility model. All equivalent changes or modifications made under the technical spirit of the present utility model should fall within the patent scope covered by the present utility model.

Claims

1. A battery pack pickup line A line sequence system characterized by The interface includes several wiring rows, each of which is connected with each battery of the battery pack in turn, and the display module includes several display circuits, each of which is connected between two adjacent interfaces of the wiring rows, and each display circuit includes a switch tube Q37 and a switch tube Q2, the input signal B0 of the wiring row is input to the base of the switch tube Q37 through a resistor R19, the collector of the switch tube Q37 is connected with the base of the switch tube Q2 in series through a resistor R20, the emitter of the switch tube Q2 is grounded, and the collector of the switch tube Q2 is connected with the total power supply LEDCOM end in series through a resistor R22 and a diode LED19.

2. The system for detecting the sequence of battery harvesting lines according to claim 1, wherein, The emitter of the switch tube Q37 is connected with the input signal B1 of the adjacent port of the wiring row, and the input signal B1 is input to the same display circuit.

3. A system for detecting the sequence of battery pack harvesting lines as recited in claim 2, wherein, The display circuits are arranged uniformly and connected with the total power supply LEDCOM end.

4. The system for detecting the sequence of battery harvesting lines according to claim 1, wherein, Each six display circuits are arranged as a row, and correspond to six batteries of the battery pack.

5. A system for detecting the sequence of battery pack harvesting lines as recited in claim 4, wherein, There are three rows of display circuits in total.

6. The system for detecting the sequence of battery harvesting lines according to claim 1, wherein, Some ports of the wiring row are connected with the total power supply LEDCOM end in series through a voltage stabilizing diode.

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