CN212008662U

CN212008662U - Multichannel battery detection system

Info

Publication number: CN212008662U
Application number: CN202020124458.9U
Authority: CN
Inventors: 贾小林通; 肖迪; 何小月
Original assignee: Wuhan Lixing Technology Co ltd
Current assignee: Wuhan Lixing Technology Co ltd
Priority date: 2020-01-20
Filing date: 2020-01-20
Publication date: 2020-11-24
Anticipated expiration: 2030-01-20

Abstract

The utility model belongs to the technical field of battery detection, in particular to a multi-channel battery detection system, which comprises a multi-channel battery detection IO port circuit module, a heat dissipation structure and a battery test fixture; the multi-channel battery detection IO port circuit module is used for providing a plurality of parallel battery detection channels; the heat dissipation structure is used for dissipating heat of the multi-channel battery detection IO port circuit module; the battery test fixture is used for connecting the detection interface of the battery detection IO port circuit module with the detected battery. The system can detect a plurality of batteries simultaneously, one channel corresponds to one battery, and when the detection is needed, the battery test fixture is inserted into an IO port, and the other end of the battery test fixture is connected with the battery. The whole IO port circuit is located in one mounting box, and the internal circuit structure is cooled through the cooling structure. The system has the advantages of ingenious design, small occupied space, high circuit integration degree, high heat dissipation efficiency, portability, flexible application scene and wide market popularization prospect.

Description

Multichannel battery detection system

Technical Field

The utility model belongs to the technical field of the battery detects, concretely relates to multichannel battery detecting system.

Background

In the production process of the battery, the detection of the battery performance is an essential link. The electrical detection means of the battery generally comprises overcharge, overdischarge, external short circuit and forced discharge, and the detection indexes comprise internal resistance, maximum discharge current, constant current precision, battery capacity and the like. The detection method commonly used at present is that a meter pen of a manual handheld battery test instrument detects batteries one by one, and the method has low efficiency and is easy to have the phenomena of misdetection and missed detection.

At present, the efficiency of battery detection equipment is low, the performance of a battery can only be detected by a single battery, and the detection of multiple batteries by multiple channels in parallel cannot be realized. When multiple channels are required to be detected simultaneously, new IO port circuits need to be redesigned, each channel can only be designed on one board, and if a plurality of IO port circuits are combined on one board, too many IOs put forward new requirements on the design layout of the PCB. In addition, the multi-channel board has large power consumption, so that the heat productivity is large, and how to effectively arrange and dissipate heat is an urgent problem to be solved.

Disclosure of Invention

The utility model aims at overcoming the difficult problem of multichannel battery detection design manufacturing among the prior art.

Therefore, the utility model provides a multichannel battery detection system, which comprises a multichannel battery detection IO port circuit module, a heat dissipation structure and a battery test fixture;

the multi-channel battery detection IO port circuit module is used for providing a plurality of parallel battery detection channels;

the heat dissipation structure is used for dissipating heat of the multichannel battery detection IO port circuit module;

the battery test fixture is used for connecting the detection interface of the battery detection IO port circuit module with the detected battery.

Preferably, the multi-channel battery detection IO port circuit module includes a main control circuit, a board selection circuit, a chip selection circuit, and a multi-channel output circuit;

the board selection circuit comprises a 74HC85 chip and 4-way switches SW used for inputting 4A input pins of the 74HC85 chip, the board selection circuit comprises a 74HC238 chip, the multi-channel output circuit comprises a plurality of 74HC574 chips, and Y0-Y7 output pins of the 74HC238 chip are respectively connected with at least one CP pin of the 74HC574 chip;

the 8 serial ports of the master control circuit are respectively connected with the input pins of the 74HC574 chip, the other 4 serial ports of the master control circuit are respectively connected with the 4B input pins of the 74HC85 chip, and the OUT < A ═ B > output pin of the 74HC85 chip is connected with the E3 enabling pin of the 74HC238 chip.

Preferably, the main control circuit, the board selection circuit, the chip selection circuit and the multi-channel output circuit are all arranged on one PCB.

Preferably, the heat dissipation structure comprises a mounting box, an air inlet is arranged at the front end of the mounting box, a fan is arranged at the rear end of the mounting box, a PCB support and a heat sink are arranged in the mounting box, the PCB support comprises a PCB support base plate for mounting a PCB and a separation plate for separating the PCB from a rear power supply, a plurality of vent holes are transversely arranged on the separation plate, and the air inlet, the vent holes and the fan are sequentially communicated to form a lower heat dissipation air duct;

the radiator is located above the PCB supporting base plate, the radiator is connected with the PCB supporting base plate through bolts, and the air inlet, the radiator and the fan are sequentially communicated to form an upper radiating air channel.

Preferably, the heat sink is a heat sink, and each heat sink groove of the heat sink is parallel to the axial direction of the fan.

Preferably, the battery test fixture is including being used for connecting multichannel battery detection IO mouth circuit module's aviation plug, cable and clip, aviation plug includes the electrical detection head, the clip includes crossbeam and holding head, the holding head with the crossbeam is articulated, aviation plug with the connection can be dismantled to the one end of cable, the crossbeam of clip with the other end fixed connection of cable, the pinch point of holding head is equipped with electrical contact, the electrical detection head with electrical contact electricity is connected.

Preferably, the multi-channel battery detection IO port circuit module includes a plurality of aviation sockets located at the same vertical height, and each aviation jack is plugged with each aviation plug in a one-to-one correspondence manner.

Preferably, the aviation socket further comprises a fixing plate, and two adjacent aviation sockets are plugged into one fixing plate.

The utility model has the advantages that: the utility model provides a multichannel battery detection system, which comprises a multichannel battery detection IO port circuit module, a heat dissipation structure and a battery test fixture; the multi-channel battery detection IO port circuit module is used for providing a plurality of parallel battery detection channels; the heat dissipation structure is used for dissipating heat of the multi-channel battery detection IO port circuit module; the battery test fixture is used for connecting the detection interface of the battery detection IO port circuit module with the detected battery. The system can detect a plurality of batteries simultaneously, the IO ports of all the channels are independent, one channel corresponds to one battery, when detection is needed, only one IO port needs to be inserted into the battery test fixture, and the other end of the battery test fixture is connected with the battery. The whole IO port circuit is located in one mounting box, and the internal circuit structure is cooled through the cooling structure. The system has the advantages of ingenious design, small occupied space, high circuit integration degree, high heat dissipation efficiency, portability, flexible application scene and wide market popularization prospect.

The present invention will be described in further detail with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic view of the internal assembly structure of the multi-channel battery test system of the present invention;

fig. 2 is a schematic diagram of a rear view perspective three-dimensional structure of the multi-channel battery detection system of the present invention;

fig. 3 is a schematic perspective view of the overall assembly bottom view internal structure of the heat dissipation structure of the multi-channel battery detection system of the present invention;

FIG. 4 is a schematic view of an aviation socket structure of the multi-channel battery detection system of the present invention;

FIG. 5 is a circuit diagram of the multi-channel battery detection IO port circuit of the multi-channel battery detection system of the present invention;

fig. 6 is a partial multi-channel output circuit diagram of the multi-channel battery detection IO port circuit of the multi-channel battery detection system of the present invention.

Fig. 7 is a schematic view of the clamp structure of the multi-channel battery detection system of the present invention.

Description of reference numerals: the system comprises a system 1, an air inlet 2, a fan 3, a PCB 4, a PCB isolation plate 5, a vent hole 6, an aviation socket 7, a switch 8, a main frame 9, a front panel 10, a lower cover plate 11, a power socket 12, an upper cover plate 13, an air outlet 14, a radiating fin 15, a power supply 16, a fixing plate 17, a cable 18, a cross beam 19, a clamping head 20 and an aviation plug 21.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.

The embodiment of the utility model provides a multichannel battery detection system, including multichannel battery detection IO mouth circuit module, heat radiation structure and battery test fixture; the multi-channel battery detection IO port circuit module is used for providing a plurality of parallel battery detection channels; the heat dissipation structure is used for dissipating heat of the multichannel battery detection IO port circuit module; the battery test fixture is used for connecting the detection interface of the battery detection IO port circuit module with the detected battery. The system can detect a plurality of batteries simultaneously, the IO ports of all the channels are independent, one channel corresponds to one battery, when detection is needed, only one IO port needs to be inserted into the battery test fixture, and the other end of the battery test fixture is connected with the battery. The whole IO port circuit is located in one mounting box, and the internal circuit structure is cooled through the cooling structure. The system has the advantages of ingenious design, small occupied space, high circuit integration degree, high heat dissipation efficiency, portability, flexible application scene and wide market popularization prospect.

In a preferred embodiment, as shown in fig. 5 and 6, the multi-channel battery detection IO port circuit module includes a main control circuit, a board selection circuit, a chip selection circuit, and a multi-channel output circuit; the board selection circuit comprises a 74HC85 chip and 4-way switches SW used for inputting 4A input pins of the 74HC85 chip, the board selection circuit comprises a 74HC238 chip, the multi-channel output circuit comprises a plurality of 74HC574 chips, and Y0-Y7 output pins of the 74HC238 chip are respectively connected with at least one CP pin of the 74HC574 chip; the 8 serial ports of the master control circuit are respectively connected with the input pins of the 74HC574 chip, the other 4 serial ports of the master control circuit are respectively connected with the 4B input pins of the 74HC85 chip, and the OUT < A ═ B > output pin of the 74HC85 chip is connected with the E3 enabling pin of the 74HC238 chip.

The working principle is as follows: firstly, in the process of equipment installation production or deployment, the operator numbers the board-selection address, namely manually selects the state of the 4-way switch SW to input the A input pin. Considering a board select circuit B (of course, there may be a plurality of parallel board select circuits, such as B1, B2, etc., each board select module corresponds to 8 74HC574), where the board select circuit is formed by connecting BM-4-SW (i.e., 4-way switch SW) and 74HC85, the B input of 74HC85 is BUS _ COMP 0-BUS _ COMP3 (i.e., BUS _ COMP), the a input is 4-way switch SW, and the value of OUT < a ═ B > is output to the E3 enable pin of 74HC238 chip by comparing the values of the a input and the B input. Suppose that BUS _ A _ CLK1 of the chip selection circuit needs to be controlled to select the IO pin corresponding to the 74HC574 chip. That is, only the value of the signal corresponding to the pin D7 (BUS _ GPIO _7) of the chip 74HC574 needs to be modified, that is, the other BUS _ GPIOs except for the pin D7 need to use the original value. There are two ways of outputting the electrical signal. One is an automatic locking mode: the main control circuit input BUS _ COMPx, BUS _ CLK _ ADDx of 74HC238 are quick selection mode input pins. BUS _ A _ CLKx (chip select signal, current output CLK1 value) of 74HC238 corresponds to the CP pin of 74HC 574. Since 74HC574 is rising edge locked, 74HC238 is high in the chip select, producing exactly one rising edge; meanwhile, due to the hysteresis of 74HC85 and 74HC238, the signal of BUS _ GPIO _ x is completely stable when 74HC574 is locked, and no problem is caused in control. The other is a manual locking mode, which assists in locking the IO output by using BUS _ FAST _ CTRL of 74HC 238: the method comprises the steps of closing 74HC238 by BUS _ FAST _ CTRL, outputting BUS _ COMPx, BUS _ A _ CLKx and BUS _ GPIO _ x signals, and then starting BUS _ FAST _ CTRL, wherein proper time delay is inserted in the steps to ensure stable time sequence.

Specifically, for the extended IO, the plate select address does not limit 4 bits (i.e. four B inputs of 74HC85, BUS _ COMP 0-BUS _ COMP3), the chip select address does not limit 3 bits (74HC238 three eight decoder), and the data bit width does not limit 16 bits (i.e. two parallel 74HC574 chips are chip-selected at a time); the main control chip has no limitation. Thus, 2 can be expanded⁴*2³2048 IO ports by 16. Other extension bits can be obtained according to the algorithm, and are not described in detail herein. Among them, the position of 74HC85 is limited by a digital comparator.

If the width of any one circuit board block is increased, the IO number can be exponentially increased; of course, clipping may be used (including clipping bit width and address width, and even clipping the board selection level).

In a preferred scheme, the chip selection circuit and the multi-channel output circuit are both arranged on one PCB 4. The output of a plurality of IO ports can be realized to a board, design and manufacturing cost are greatly simplified, and the manufacturing difficulty is also reduced. The production efficiency is improved, and the resources are saved.

In a preferred scheme, as shown in fig. 1 to 3, the system 1 includes a mounting box, an air inlet 2 is arranged at the front end of the mounting box, a fan 3 is arranged at the rear end of the mounting box, a PCB support is arranged in the mounting box, the PCB support includes a PCB support base plate for mounting a PCB 4 and a separation plate for separating the PCB 4 from a rear power supply, a plurality of vent holes 6 are transversely arranged on the separation plate, and the air inlet 2, the vent holes 6 and the fan 3 are sequentially communicated to form an upper heat dissipation air duct; the radiator is located below the PCB supporting base plate, the radiator is connected with the PCB supporting base plate through bolts, and the air inlet 2, the radiator and the fan 3 are sequentially communicated to form a lower radiating air duct. The outside air enters from the air inlet 2, passes over the PCB board 4 and then through the ventilation holes 6 and finally reaches the fan 3. Therefore, the mounting box is a cuboid, the front end of the mounting box is provided with the air inlets 2, the fan 3 is arranged at the rear end of the mounting box, the PCB support is arranged in the middle of the fan 3, and the PCB 4 is arranged on the PCB support. The space of the mounting box is divided into two parts by the isolation plate on the PCB bracket. Due to the existence of the PCB isolation board 5, the PCB 4 close to the front end of the mounting box is isolated from other heating sources such as a power supply close to the rear end of the mounting box, and the influence of heat convection exchange among different heating sources on the working performance of each other is avoided. On one hand, the upper half space of the mounting box is provided with an upper heat dissipation channel. Be equipped with a plurality of ventilation holes 6 on the division board, under fan 3's suction effect, external cold air gets into from air intake 2, earlier through the PCB board 4 that is close to the mounting box front end, cools off electronic components on PCB board 4, rethread ventilation hole 6, reach fan 3 behind other sources that generate heat such as the power that is close to the mounting box rear end, take away the heat in the source that generates heat such as PCB board 4 and power 16 through the air outlet 14 that is located fan 3 rear end at last. On the other hand, the lower half space of the mounting box is provided with a lower heat dissipation channel. The cold air enters from the air inlet 2 and firstly passes through the radiator, the radiator is the radiating fins 15, and because the radiating grooves of the radiating fins are narrow and small and are arranged in parallel, a lower radiating air channel can be formed in the process of sucking by the fan 3, so that the air speed is high when the cold air passes through the radiating fins, and the heat on the radiating fins can be taken away more efficiently. In addition, the PCB 4 is positioned at the upstream of the heat dissipation air duct, other heating sources such as a power supply and the like are positioned at the downstream as much as possible, and the upstream and the downstream are separated by the isolation board, so that the normal work of the PCB 4 can be effectively ensured not to be influenced by the heat of other heating sources, and the circuit safety and the service life of the PCB 4 are improved.

The mounting box comprises a main frame 9, a front panel 10, an upper cover plate 13 and a lower cover plate 11, openings are formed in the upper end, the lower end and the front end of the main frame 9, the upper cover plate 13 is connected with an upper end bolt of the main frame 9, the lower cover plate 11 is connected with a lower end bolt of the main frame 9, the front panel 10 is connected with a front end bolt of the main frame 9, and the main frame 9, the front panel 10, the upper cover plate 13 and the lower cover plate 11 enclose and form a closed space for mounting a battery detection circuit structure. As described above, the main frame 9, the front panel 10, the upper cover 13, and the lower cover 11 may be assembled by bolts to enclose a single closed space, and the battery detection circuit may be installed in the closed space. The main frame 9 includes a rear plate, a left side plate and a right side plate, and the three plates are integrally formed to form a semi-closed space with an open front end, an open upper end and an open lower end, and a certain height. The rear end is provided with a power socket 12 for external power supply, and the front end is provided with a switch 8 for turning on or off the whole system 1. During installation, the lower cover plate 11 is installed firstly, the upper end of the lower cover plate 11 is provided with a 90-degree angle folding block, the 90-degree angle folding block is buckled on the side wall of the main frame 9, and then the lower cover plate 11 is installed with a bolt for fastening connection. And then the circuit structure and other parts are installed in the closed space. And finally, an upper cover plate 13 is installed, a 90-degree corner block is also arranged at the lower end of the upper cover plate 13, the upper cover plate 13 is fastened and connected through an upper cover plate 13 installation bolt, and the upper cover plate 13 and the lower cover plate 11 are installed in the same way. And finally, a front panel 10 is installed, and the front panel 10 is connected with two free end bolts of the front opening of the main frame 9.

Preferably, the heat sink is a heat sink 15, and each heat sink groove of the heat sink 15 is parallel to the axial direction of the fan 3.

Preferably, as shown in fig. 7, the battery test fixture includes an aviation plug 21, a cable 18 and a clip, where the aviation plug 21 is used to connect the multi-channel battery test IO port circuit module, the aviation plug 21 includes an electrical detection head, the clip includes a beam 19 and a clamping head 20, the clamping head 20 is hinged to the beam 19, the aviation plug 21 is detachably connected to one end of the cable 18, the beam 19 of the clip is fixedly connected to the other end of the cable 18, a clamping point of the clamping head 20 is provided with an electrical contact, and the electrical detection head is electrically connected to the electrical contact. The cable 18 is the enameled wire, has many signal lines in, and 18 tail ends of the cable bury underground in the crossbeam 19 of clip, are equipped with the wire casing in the crossbeam 19 of clip, so walk the dark line in inside and introduce the signal line to the clamping head 20 of clip, also can walk the open wire, tie up the cable 18 on the clip through ribbon or viscose means to it can to be electrically connected the end of signal with the electrical contact of clamping head 20.

Preferably, as shown in fig. 4, the multi-channel battery detection IO port circuit module includes a plurality of aviation sockets 7 located at the same vertical height, and each aviation socket is plugged with each aviation plug in a one-to-one correspondence manner. The aviation socket is characterized by further comprising fixing plates, and every two adjacent aviation sockets 7 are inserted into one fixing plate 17. As shown in fig. 1 and 4, a fixing plate 17 is mounted on the inner side of the front panel 10 by means of bolts, and the fixing plate 17 can fix two aircraft sockets 7. The height of each fixing plate 17 is positioned by a bolt hole of the front panel 10. This ensures that the height of each aircraft socket 7 is uniform.

The above examples are merely illustrative of the present invention and do not limit the scope of the present invention, and all designs identical or similar to the present invention are within the scope of the present invention.

Claims

1. A multi-channel battery test system, comprising: the multi-channel battery test IO port circuit module comprises a multi-channel battery test IO port circuit module, a heat dissipation structure and a battery test clamp;

2. The multi-channel battery test system of claim 1, wherein: the multichannel battery detection IO port circuit module comprises a main control circuit, a board selection circuit, a chip selection circuit and a multichannel output circuit;

3. The multi-channel battery test system of claim 2, wherein: the main control circuit, the board selection circuit, the chip selection circuit and the multi-channel output circuit are all distributed on one PCB.

4. The multi-channel battery test system of claim 1, wherein: the heat dissipation structure comprises a mounting box, an air inlet is formed in the front end of the mounting box, a fan is arranged at the rear end of the mounting box, a PCB support and a radiator are arranged in the mounting box, the PCB support comprises a PCB supporting base plate for mounting a PCB and a separation plate for separating the PCB from a rear-end power supply, a plurality of ventilation holes are formed in the separation plate in the transverse direction, and the air inlet, the ventilation holes and the fan are sequentially communicated to form a lower heat dissipation air channel;

5. The multi-channel battery test system of claim 4, wherein: the radiator is a radiating fin, and each radiating groove of the radiating fin is parallel to the axial direction of the fan.

6. The multi-channel battery test system of claim 1, wherein: the battery test fixture comprises an aviation plug, a cable and a clamp, wherein the aviation plug, the cable and the clamp are used for connecting the multichannel battery detection IO port circuit module, the aviation plug comprises an electric detection head, the clamp comprises a cross beam and a clamping head, the clamping head is hinged to the cross beam, the aviation plug is detachably connected with one end of the cable, the cross beam of the clamp is fixedly connected with the other end of the cable, an electric contact is arranged at a clamping point of the clamping head, and the electric detection head is electrically connected with the electric contact.

7. The multi-channel battery test system of claim 6, wherein: the multichannel battery detection IO port circuit module comprises a plurality of aviation sockets located at the same vertical height, and each aviation jack is correspondingly spliced with each aviation plug one by one.

8. The multi-channel battery test system of claim 7, wherein: the aviation socket is characterized by further comprising fixing plates, and every two adjacent aviation sockets are connected with one fixing plate in an inserting mode.