CN109980307A - A kind of lithium battery group device for fast detecting and detection method - Google Patents

Abstract

The invention discloses a rapid detection device and detection method for a lithium battery pack, comprising a detection socket, a detection plug and a signal processor for converting detected battery information into visual data, wherein the detection plug is connected to the signal processor, The detection socket is fixed on the lithium battery shell, the detection plug is pluggable and arranged on the detection socket, the lithium battery pack is provided with a protection board for internal management of the battery, and the detection socket is connected to the internal circuit of the protection board, The signal processor collects the battery information of the lithium battery from the protection board by inserting the detection plug on the detection socket. The detection device and the corresponding detection method of the present invention can reduce the difficulty in the maintenance and detection of the lithium battery pack of the electric bicycle, and can quickly detect the lithium battery pack without disassembling the lithium battery casing.

Description

A kind of lithium battery pack rapid detection device and detection method

technical field

The invention relates to a lithium battery detection technology, in particular to a lithium battery pack rapid detection device and a detection method.

Background technique

As a new type of green and environmental protection product powered by power, electric bicycles have been highly valued by many countries. Lithium-ion batteries have gradually become one of the best choices for electric bicycle power batteries due to their long life, high cost performance, fast charging and green environmental protection. In the process of using lithium battery packs for electric bicycles, high waterproof and dustproof requirements must be met, such as ultrasonic welding, gluing and other processes, but this brings great difficulties to the after-sales testing of lithium battery packs.

At present, most of the electric vehicle lithium battery packs to be tested in the market are disassembled and then tested with testing tools, which not only requires more manpower and material resources, damages the lithium battery pack shell, but also causes Detection efficiency is low.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a lithium battery pack rapid detection device and detection method, which can reduce the difficulty of maintenance and detection of electric bicycle lithium battery packs, and can quickly detect lithium battery packs without disassembling the lithium battery casing.

In order to achieve the above purpose of the invention, the present invention adopts the following technical solutions: a lithium battery pack rapid detection device, comprising a detection socket, a detection plug and a signal processor for converting the detected battery information into visual data, the The detection plug is connected to the signal processor, the detection socket is fixed on the lithium battery shell, the detection plug is pluggable and arranged on the detection socket, the lithium battery pack is provided with a protection board for internal management of the battery, and the detection socket is connected to On the internal circuit of the protection board, the signal processor collects battery information of the lithium battery from the protection board by inserting the detection plug into the detection socket.

When the lithium battery pack is detected, the inspector inserts the detection plug into the detection socket, connects the signal processor to the protection board inside the lithium battery pack, and obtains the battery information inside the battery pack through the protection board. The information is converted into a digital signal that is displayed to the inspector.

Compared with the prior art, the lithium battery pack rapid detection device using the above technical solution has the following beneficial effects:

1. The use of the lithium battery pack rapid detection device of the present invention can maximize the extraction of battery information of the lithium battery pack, without destroying the lithium battery pack shell structure, ensuring that the lithium battery pack shell and the internal structure of the lithium battery pack are complete.

2. The tester directly inserts the test plug into the test socket on the lithium battery pack to test the battery information of the lithium battery pack, which makes the lithium battery test more rapid and convenient, and improves the battery test efficiency.

Preferably, the protection board is provided with detection contacts for sending battery information inside the lithium battery pack, the detection contacts are connected to the internal circuit of the protection board, and the socket pins are connected to the protection board through the detection contacts.

Preferably, the detection socket is provided with a socket pin for collecting battery information, the socket pin is arranged through the detection socket, one end of the socket pin is connected to the collection contact, and the other end of the socket pin is exposed to the detection socket. outside of the socket.

Preferably, the detection plug is provided with a plug pin. During the detection, the detection plug is inserted into the detection socket. One end of the plug pin is connected to the socket pin and is exposed at one end of the detection socket. The other end is connected to the signal processor. The socket pins and the plug pins cooperate with each other to conduct the battery signal, which is convenient for the transmission of the signal and the detection of the battery information of the lithium battery pack.

Preferably, the detection contacts include an A collection point and a B collection point for collecting battery information, and a ground collection point for grounding output.

Preferably, the detection socket is provided with three socket pins, and the three socket pins are respectively connected to the A collection point, the B collection point and the ground collection point.

Preferably, the detection socket is provided with a limit groove, the detection plug is provided with a limit bump, and the limit groove and the limit bump have the same shape; when the detection plug is inserted into the detection socket, the limit The bump is located in the limit groove to ensure the connection stability of the detection plug and the detection socket.

Preferably, a signal line is also included, and the signal line is connected to the detection plug and the signal processor.

In order to achieve the above purpose of the invention, the present invention also adopts the following technical solutions: a method for rapid detection of a lithium battery pack according to the above-mentioned rapid detection device, the internal circuit of the protection board collects the battery information of the lithium battery pack, and sends the battery information through the detection contact The detection plug is inserted into the detection socket, and the socket pins are connected with the plug pins to transmit battery information; the signal processor receives the battery information and converts the battery information into digital signals.

Preferably, the battery information includes a battery pack total voltage signal, a battery pack single string voltage signal, and a battery pack voltage difference signal.

Description of drawings

1 is a schematic structural diagram of an embodiment of a lithium battery pack rapid detection device according to the present invention;

FIG. 2 is a schematic diagram of the internal structure of the detection socket and the detection plug in this embodiment.

Reference numerals: 1, detection socket; 11, socket pin; 12, limit groove; 2, detection plug; 21, plug pin; 22, signal wire; 23, limit bump; 3, signal processor ; 4. Shell; 5. Protection plate; 51. Detection contact.

Detailed ways

Embodiments of the present invention are described in more detail below with reference to the accompanying drawings.

As shown in Figure 1, the lithium battery pack rapid detection device includes a detection socket 1, a detection plug 2 and a signal processor 3 for converting the detected battery information into visual data. Managed protection panels 5. The signal processor 3 collects battery information inside the lithium battery pack from the protection board 5 through the detection socket 1 and the detection plug 2 . The protection board 5 is provided with a detection contact 51 for sending battery information inside the lithium battery pack, and the detection contact 51 is connected to the internal circuit on the protection board 5. In this embodiment, the lithium battery pack is a lithium battery for electric bicycles. The battery pack, the protection board 5 refers to the BMS board with the battery management system used inside the lithium battery of the electric bicycle. By collecting battery information from the BMS board, the battery information that can be collected in this embodiment includes, but is not limited to, the total voltage signal of the battery pack, the voltage signal of a single string of the battery pack, and the voltage difference signal of the battery pack.

In order to facilitate the detection of the lithium battery pack, the detection socket 1 is fixed on the casing 4 of the lithium battery pack, and the detection plug 2 is pluggable and arranged on the detection socket 1. When detection is required, insert the detection plug 2 into the detection socket 1 for detection. After completion, pull out the detection plug 2 from the detection socket 1. The whole process will not cause damage to the lithium battery pack casing 4 and the internal structure, and the entire detection process can be completed by one plugging and unplugging, which is convenient and quick, and facilitates the fixing of the detection device.

2 is a schematic diagram of the internal structure of the detection socket 1 and the detection plug 2 on the lithium battery pack casing 4. In this embodiment, in order to facilitate the connection between the detection plug 2 and the detection socket 1 and the transmission of battery information to be stable, the detection socket 1 and the detection plug 2 are internally provided with pins. The detection socket 1 is provided with a socket pin 11, and the socket pin 11 is arranged through the detection socket 1. One end of the socket pin 11 is located inside the lithium battery pack, and the other end is exposed outside the detection socket 1. The socket pin 11 is located in the lithium battery pack. One end inside the battery pack is in contact with the detection contact 51 on the corresponding protection plate 5 .

The detection plug 2 is provided with a plug pin 21 , one end of the plug pin 21 is exposed outside the detection plug 2 , and the other end is inside the detection plug 2 , and is connected to the signal processor 3 through a signal line 22 . In order to ensure that the detection plug 2 and the detection socket 1 can be firmly connected, the detection socket 1 is provided with a limit groove 12, the side of the detection plug 2 with the plug pins 21 is provided with a limit bump 23, the limit groove 12 and the limit The shape of the position bumps 23 is the same. When the detection plug 2 is inserted into the detection socket 1 , the limit bumps 23 are located in the limit grooves 12 . When the lithium battery pack is detected, the detection plug 2 is inserted into the detection socket 1 , and the limiting groove 12 and the limiting bump 23 are engaged and fixed to each other. At this time, the plug pin 21 is connected to the socket pin 11 exposed at one end of the detection socket 1, and the entire measurement circuit is opened up. The entire power collection process and steps are: S1: The internal circuit of the protection board 5 collects the battery information of the lithium battery pack, and sends the battery information through the detection contact 51; S2: The detection plug 2 is inserted into the detection socket 1, and the socket pin 11 and The plug pin 21 is connected to transmit the battery information; S3: The signal processor 3 receives the battery information and converts the battery information into a digital signal.

The signal processor 3 adopts AD conversion technology to convert the analog signal collected in the circuit into a digital signal after collecting the battery information of the lithium battery pack. In this embodiment, the signal processor 3 adopts a lithium battery detector, which can process the digital signal for hours in actual use, and can collect it in stages to avoid data duplication.

In this embodiment, the protection board 5 is provided with three detection contacts 51 , which are the A collection point and the B collection point for collecting battery information, and the grounding collection point for grounding output. As shown in FIG. 2 , in order to transmit and process the collected signals of the three detection contacts 51 , there are also three socket pins 11 , plug pins 21 and corresponding signal lines 22 , which are respectively connected with the A collection point, the B collection point and the corresponding signal line 22 . The grounding collection points correspond one by one. The A collection point, the B collection point, and the ground collection point are connected to the terminals of the lithium battery BMS inside the lithium battery pack. The control signal of the acquisition point A is the VMEN-voltage monitoring signal, and an external pull-up resistor is connected to VMEN. When a low-level signal is input to the VMEN pin, the signal processor 3 monitors the voltage output; when VMEN outputs a low-level interrupt signal, The detection and acquisition object of the signal processor 3 changes, and each pulse signal monitors the single-core voltage once. The control signal of the B collection point is half of the voltage of the VMON-output single cell, and the ground collection point is GND-signal output ground.

The above are the preferred embodiments of the present invention. For those of ordinary skill in the art, without departing from the principles of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention.

Claims (10)

1. a kind of lithium battery group device for fast detecting, it is characterised in that: including detection socket (1), test plug (2) and for inciting somebody to action The battery information detected is converted to the signal processor (3) of viewdata, test plug (2) the connection signal processor (3), the detection socket (1) is fixed on lithium battery group shell (4), and the pluggable setting of test plug (2) is inserted in detection The protection board (5) for inside battery management is equipped on mouth (1), in lithium battery group, the detection socket (1) is connected to protection board (5) on internal circuit, the signal processor (3) is plugged in detection socket (1) by test plug (2) from protection board (5) Acquire the battery information of lithium battery.

2. lithium battery group device for fast detecting according to claim 1, it is characterised in that: the protection board (5) is equipped with For sending the detection contact (51) of the battery information inside lithium battery group, detection contact (51) connection protection board (5) is interior Portion's circuit, the socket contact pin (11) pass through detection contact (51) connection protection board (5).

3. lithium battery group device for fast detecting according to claim 2, it is characterised in that: set on the detection socket (1) There is the socket contact pin (11) for acquiring battery information, the socket contact pin (11) runs through setting in detection socket (1), socket One end of contact pin (11) connects collect contacts, the exposed outside in detection socket (1) of the other end of socket contact pin (11).

4. lithium battery group device for fast detecting according to claim 3, it is characterised in that: set on the test plug (2) Having plug insertion pin (21), when detection, the test plug (2) is plugged in detection socket (1), and the one of the plug insertion pin (21) Hold connection socket contact pin (11) exposed one end in detection socket (1), the other end connection signal processor of plug insertion pin (21) (3).

5. lithium battery group device for fast detecting according to claim 2, it is characterised in that: the detection contact (51) includes It further include the ground connection collection point for being grounded output for acquiring the collection point A and the collection point B of battery information.

6. lithium battery group device for fast detecting according to claim 5, it is characterised in that: set on the detection socket (1) There are three socket contact pin (11), three socket contact pins (11) are separately connected the collection point A, the collection point B and ground connection collection point.

7. lithium battery group device for fast detecting according to claim 1, it is characterised in that: set on the detection socket (1) Have limiting groove (12), the test plug (2) is equipped with spacing block set (23), limiting groove (12) and spacing block set (23) Shape is identical；When test plug is plugged in detection socket (1), spacing block set (23) is located in limiting groove (12).

8. lithium battery group device for fast detecting according to claim 1, it is characterised in that: further include signal wire (22), institute State signal wire (22) connecting detection plug (2) and signal processor (3).

9. a kind of lithium battery group rapid detection method described in any one of -8 according to claim 1, it is characterised in that:

S1: protection board (5) internal circuit acquires the battery information of lithium battery group, and sends battery letter by detection contact (51) Breath；

S2: in test plug (2) insertion detection socket (1), socket contact pin (11) is connect with plug insertion pin (21), transmitting electricity Pond information；

S3: the signal processor (3) receives battery information, and converts digital signal for battery information.

10. lithium battery group rapid detection method according to claim 9, it is characterised in that: the battery information includes electricity Pond group total voltage signal, battery pack list string voltage signal and battery voltage difference signal.