A multi-channel battery detection circuit and apparatus thereof

Abstract

The present application relates to the technical field of battery detection, and more particularly to a multi-channel battery detection circuit and device thereof. The device comprises a signal transmission module, a battery detection channel, a detection channel selection module, a common control module and a hierarchical selection module. The hierarchical selection module comprises a first decoding chip, a signal input end group of the first decoding chip is connected with a layer selection signal output end group of the signal transmission module, and a signal output end group is connected with an enable end of a corresponding hierarchical common control module in the form of network number. The detection channel selection module comprises a second decoding chip, and a signal input end group of the second decoding chip is connected with a channel signal output end group of the signal transmission module. The present application only needs to modify the signal instruction to be sent, so that another battery detection channel can be quickly switched to work, thereby avoiding interference between different battery detection channels.

Description

Technical Field

[0001] This invention relates to the technical field of battery testing, and more specifically, to a multi-channel battery testing circuit and device thereof. Background Technology

[0002] In the battery production and testing process, battery testing equipment is often needed to test the voltage, internal resistance, and charge / discharge of a batch of batteries to distinguish their quality grades. In existing technology, battery testing equipment generally uses electromagnetic relays, reed relays, and MOSFETs as channel switching drive elements. However, these methods have slow response speeds, are prone to mutual interference, and are also bulky and have high maintenance costs. Summary of the Invention

[0003] To overcome the problems of slow response speed and easy mutual interference in the battery detection devices described in the background art, the present invention provides a multi-channel battery detection circuit and device.

[0004] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows:

[0005] In a first aspect, the present invention provides a multi-channel battery detection circuit, including a signal transmission module for outputting host computer control signals, a plurality of battery detection channels for connecting battery detection slots to a measuring instrument, a plurality of detection channel selection modules for switching each of the battery detection channels, a plurality of common control modules for pre-activating all the battery detection channels at the same level, and a level selection module for switching each of the common control modules.

[0006] The layer selection module includes a first decoding chip. The signal input terminal group of the first decoding chip is connected to the layer selection signal output terminal group of the signal transmission module. The signal output terminal group is connected to the enable terminal of the common control module of each corresponding layer through a network number. The first control output terminal of the common control module is connected to the first control switch module of each battery detection channel in the same layer. The detection channel selection module includes a second decoding chip. The signal input terminal group of the second decoding chip is connected to the channel signal output terminal group of the signal transmission module. The enable terminal is connected to the second control output terminal of the common control module. The channel signal output terminal group is connected to the second control switch module of each corresponding battery detection channel in the same layer through a network number.

[0007] Preferably, each of the common control modules is provided with a logic control module, and the signal output terminal group of the first decoding chip is connected to the enable terminal of the corresponding logic control module in the form of network number; the signal input terminal group of the logic control module is connected to the common signal output terminal group of the signal transmission module, and the first control output terminal is connected to the enable terminal of the second decoding chip.

[0008] Preferably, the detection channel selection module is further provided with a third decoding chip; the second control output terminal of the logic control module is connected to the enable terminal of the third decoding chip; the signal input terminal group of the third decoding chip is connected to the channel signal output terminal group of the signal transmission module, and the channel signal output terminal group is connected to the second control switch modules corresponding to the battery detection channels at the same level in the form of network numbers.

[0009] Preferably, the first decoding chip, the second decoding chip, and the third decoding chip are all of model CD4514BM96.

[0010] Preferably, the logic control module further includes a logic chip, a first transistor, and a second transistor. The signal output terminal group of the first decoding chip is connected to the enable terminal of the logic chip via a network number. The signal input terminal group of the logic chip is connected to the common signal output terminal group of the signal transmission module. The first control output terminal is connected to the base of the first transistor, and the second control output terminal is connected to the base of the second transistor. The collector of the first transistor is connected to the enable terminal of the second decoding chip, and its emitter is grounded. The collector of the second transistor is connected to the enable terminal of the third decoding chip, and its emitter is grounded.

[0011] Preferably, the logic chip is model 4073; both the first transistor and the second transistor are NPN transistors.

[0012] Preferably, both the level selection module and the detection channel selection module are provided with a plurality of Darlington transistor chips for amplifying signals. The Darlington transistor chips are arranged in the form of network numbers between the signal output terminal group of the first decoding chip and the enable terminal of the common control module of each corresponding level, and between the channel signal output terminal group of the second and third decoding chips and the second control switch module of each corresponding battery detection channel at the same level.

[0013] Preferably, the Darlington transistor chip is model TPM2803.

[0014] Preferably, the battery detection channel is further provided with a switch switching module for switching between measuring the positive and negative terminals of the battery and the casing, and the signal input terminal group of the switch switching module is connected to the battery detection switching signal output terminal group of the signal transmission module.

[0015] Secondly, the present invention also provides a multi-channel battery detection device, comprising:

[0016] Host computer;

[0017] Several levels of detection layers;

[0018] A common circuit board used to select and activate the detection layer for detection;

[0019] Several circuit boards matched with each of the aforementioned detection layers; and

[0020] Measuring instrument;

[0021] As described in the first aspect, the signal transmission module and the layer selection module in the multi-channel battery detection circuit are disposed on the common circuit board. Each circuit main board is provided with a common control module and a detection channel selection module. The host computer is connected to the common control module via the signal transmission module, and the common circuit board is connected to the common control module of each circuit main board via the layer selection module. Each common control module is connected to the first control switch module of the corresponding battery detection channel on the same layer, and each detection channel selection module is connected to the second control switch module of the corresponding battery detection channel on the same layer. Each detection layer board is provided with a plurality of battery detection slots and a battery detection channel matching the number of battery detection slots. Each battery detection slot is connected to the measuring instrument via the battery detection channel.

[0022] The beneficial effects of this invention are as follows:

[0023] 1. This invention employs a layer selection module and a detection channel selection module to precisely switch battery detection channels for battery testing. The layer selection module is used to select a specific layer, equivalent to vertical selection; the detection channel selection module is used to select and activate a specific battery detection channel within the layer selected by the layer selection module. When one battery has finished testing, only the sent signal command needs to be modified to quickly switch to another battery detection channel. This achieves rapid response and switching of battery detection channels while avoiding interference between different battery detection channels.

[0024] 2. This invention employs an integrated design to reduce the size of the device and increase its stability. Each working module is integrated into a specific working area, and the modules interact via electrical signals. A miniature signal relay is used to activate the battery detection channel, thus reducing the device's size while increasing its performance stability. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the multi-channel battery detection circuit provided by the present invention.

[0026] Figure 2 The circuit structure diagram of the signal transmission module provided by the present invention.

[0027] Figure 3 The circuit structure diagram of the hierarchy selection module provided by the present invention.

[0028] Figure 4 The circuit structure diagram of the logic control module and the first control switch module of the battery detection channel provided by the present invention.

[0029] Figure 5 The circuit structure diagram of the detection channel selection module provided by the present invention.

[0030] Figure 6 The circuit structure diagram of the second control switch module for the battery detection channel provided by the present invention is shown.

[0031] Figure 7 Another circuit structure diagram of the hierarchy selection module provided by the present invention.

[0032] Figure 8 This is a schematic diagram of the structure of the multi-channel battery detection device provided by the present invention.

[0033] Among them: signal transmission module 10, level selection module 20, common control module 30, detection channel selection module 40, and battery detection channel 50;

[0034] 1. Host computer; 2. Detection layer board; 3. Common circuit board; 4. Circuit main board; 5. Measuring instrument. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0036] Example 1

[0037] like Figure 1As shown, this embodiment provides a multi-channel battery detection circuit, including a signal transmission module 10, a level selection module 20, a common control module 30, a detection channel selection module 40, and a battery detection channel 50. The battery detection channel 50 is mainly used to connect the battery detection slot to the measuring instrument, the detection channel selection module 40 is mainly used to switch between the various battery detection channels 50, and the common control module 30 is mainly used to pre-activate all the battery detection channels at the same level.

[0038] like Figure 2 As shown, the signal transmission module 10 is equipped with a bidirectional optocoupler, model TLP290-4, which connects the host computer to other working modules for signal transmission and electrical isolation between them. The signal transmission module 10 primarily outputs control signals from the host computer. A DIP switch SW1 can also be installed on the signal transmission module 10, allowing for switching between NPN and PNP types of the bidirectional optocoupler.

[0039] Combination Figure 3 As shown, the layer selection module 20 includes a first decoding chip U1, and the signal input terminal group of the first decoding chip U1 is connected to the layer selection signal output terminal group of the signal transmission module 10. A common control module 30 is provided in each layer, which is located in the first integrated module IC1. The signal output terminal group of the layer selection module 20 is connected to the enable terminal of the common control module 30 of each corresponding layer through network numbering, and is used to switch between different layers of the common control module 30.

[0040] Combination Figure 4 As shown, the first control output terminal of the common control module 30 is connected to the first control switch module of each battery detection channel 50 at the same level. The first control switch module is equipped with a first relay K1A, a second relay K2A, and a third relay K3A, which are used to pre-open all battery detection channels 50 at the same level.

[0041] Combination Figure 5 As shown, the detection channel selection module 40 includes a second decoding chip U2. The signal input terminal group of the second decoding chip U2 is connected to the channel signal output terminal group of the signal transmission module 10, and the enable terminal is connected to the second control output terminal of the common control module 30. The channel signal output terminal group is connected to the second control switch modules of each corresponding battery detection channel 50 at the same level through network numbering. The second control switch modules of the battery detection channels 50 are located in the second integrated module IC2.

[0042] like Figure 6As shown, the second control switch module of the battery detection channel 50 is equipped with a fourth relay K4A. The conduction of the second control switch module can be controlled by controlling the conduction of the fourth relay. One end of the fourth relay K4A is connected to the battery terminal via an X1-CON2 connector, and the other end is connected to the normally open contacts of the first relay K1A, second relay K2A, and third relay K3A in each layer, respectively. The battery detection channel 50 is only activated when both the first and second control switch modules are closed.

[0043] Each layer of the detection device is equipped with a common control module 30 and a detection channel selection module 40.

[0044] In some preferred embodiments, the common control module 30 is provided with a logic control module, which is used to select and enable the detection channel selection module 40 at the same level. The logic control module is also provided with a logic chip U4, a first transistor Q1, and a second transistor Q2. The detection channel selection module 40 is also provided with a third decoding chip U3. The signal output terminal group of the first decoding chip U1 is connected to the enable terminal of the logic chip U4 via a network number; the signal input terminal group of the logic chip U4 is connected to the common signal output terminal group of the signal transmission module 10; the first control output terminal is connected to the base of the first transistor Q1; and the second control output terminal is connected to the base of the second transistor Q2. The collector of the first transistor Q1 is connected to the enable terminal of the second decoding chip U2, and its emitter is grounded; the collector of the second transistor Q2 is connected to the enable terminal of the third decoding chip U3, and its emitter is grounded. The signal input terminal group of the third decoding chip U3 is connected to the channel signal output terminal group of the signal transmission module 10. The channel signal output terminal group is connected to the second control switch module of each corresponding battery detection channel 50 at the same level through network numbering.

[0045] The first decoder chip U1, the second decoder chip U2, and the third decoder chip U3 are all model CD4514BM96. The logic chip U4 is model 4073; the first transistor Q1 and the second transistor Q2 are both NPN transistors. Since one decoder chip can output 16 signals, this embodiment can have a maximum of 16*32=512 battery detection channels 50; if 20 battery detection channels 50 are set in one layer of this embodiment, then this embodiment has 16*20=320 battery detection channels 50.

[0046] In this embodiment, both the level selection module 20 and the detection channel selection module 40 are equipped with several Darlington transistor chips, the model of which is TPM2803. The Darlington transistor chips are arranged in a network numbering manner between the signal output terminal group of the first decoder chip U1 and the enable terminal of the common control module 30 of each corresponding level, and between the channel signal output terminal groups of the second decoder chip U2 and the third decoder chip U3 and the second control switch modules of each corresponding battery detection channel 50 at the same level, for amplifying the output signals of the first decoder chip U1, the second decoder chip U2, and the third decoder chip U3.

[0047] In some preferred embodiments, the battery detection channel 50 is further provided with a switch switching module. The switch switching module is mainly used to switch the connection between the positive and negative terminals of the measuring battery and the casing. It includes a third transistor Q3, a fourth transistor Q4, a fifth relay K5A, and a sixth relay K6A. The bases of the third transistor Q3 and the fourth transistor Q4 are respectively connected to the battery detection switching signal output group of the signal transmission module 10. The collector of the third transistor Q3 is connected to one end of the fifth relay K5A, and the collector of the fourth transistor Q4 is connected to one end of the sixth relay K6A. The emitters of both the third transistor Q3 and the fourth transistor Q4 are grounded. The other ends of the fifth relay K5A and the sixth relay K6A are connected to voltage. The auxiliary switches of the fifth relay K5A and the sixth relay K6A are connected between the X1-CON18 connector and the jumper caps on the positive and negative terminals of the battery and the casing.

[0048] Through the structural connection of the above modules, the working principle of this embodiment is as follows: Assuming that the 17th battery detection channel 50 of the 5th layer is selected for operation, the position information of this channel is 5*16+1*17=97 channels. First, the host computer sends the position information of this channel to the data signal and enable signal of the first decoding chip U1 through the signal transmission module 10. As a result, the 7th pin of the signal output terminal group of the first decoding chip U1 outputs a high-level signal M1_ICH_5. After the signal is amplified by the Darlington tube, it drives the first relay K1A, the second relay K2A and the third relay K3A in the common control module 30 of the 5th layer. At the same time, the first decoding chip U1's... Pin 7 also drives the logic chip U4 of layer 5 to output the signal of pin 6 to control the conduction of the second transistor Q2. In turn, the second transistor Q2 conducts and pulls down the enable terminal of the third decoder chip U3 of layer 5, and the third decoder chip U3 is activated. At this time, all channels of layer 5 are pre-enabled. Afterwards, the third decoder chip U3 of layer 5 receives the signal transmitted by the signal transmission module 10 and performs further logic operations, driving the output signal M1_ICH_17 of pin 11 of the third decoder chip U3. After the signal is amplified by the Darlington tube, it drives the contact of the fourth relay K4A to close. Thus, in this embodiment, the 17th battery detection channel 50 of layer 5 has been enabled.

[0049] To measure the voltage between the positive terminal and the casing of the battery, simply drive the third transistor Q3 to drive the fifth relay K5A, and simultaneously insert the second jumper cap. At this time, the positive casing voltage can be measured through pins 5 and 4 of the X1-CON8 connector. When the fifth relay K5A is not activated, the positive and negative terminal voltages of the battery can be measured through pins 5 and 4 of the X1-CON8 connector, thus saving a voltmeter. Similarly, if it is necessary to measure the positive and negative casing voltages, simply drive the K6A relay.

[0050] Example 2

[0051] The difference between this embodiment and the previous one is that:

[0052] like Figure 7 As shown, in this embodiment, the number of control battery detection channels 50 can be increased by adding a fourth decoding chip U5. When the selected number of layers is greater than 16, the host computer sends an enable signal to the fourth decoding chip U5 through the signal transmission module 10. The fourth decoding chip U5 works in the same way as the first decoding chip U1, and the chip model is the same as that of the first decoding chip U1, which is CD4514BM96.

[0053] Through the structural connection of the above modules, the working principle of this embodiment is as follows: Assuming that the 17th battery detection channel 50 of the 17th layer is selected for operation, the position information of this channel is 16*20+1*17=357 channels. First, the host computer sends the position information of this channel to the data signal and enable signal of the fourth decoding chip U5 through the signal transmission module 10. As a result, the 11th pin of the signal output terminal group of the fourth decoding chip U5 outputs a high-level signal M1_ICH_17. After the signal is amplified by the Darlington tube, it drives the first relay K1A, the second relay K2A and the third relay K3A in the common control module 30 of the 17th layer. At the same time, the 11th pin of the fourth decoding chip U5... The pin also drives the logic chip U4 of the 17th layer to output the signal on pin 6 to control the conduction of the second transistor Q2. In turn, the second transistor Q2 conducts and pulls down the enable terminal of the third decoder chip U3 of the 17th layer, thus activating the third decoder chip U3. At this time, all channels of the 17th layer are pre-enabled. Afterward, the third decoder chip U3 of the 17th layer receives the signal transmitted by the signal transmission module 10 and performs further logic operations, driving the output signal M1_ICH_17 from pin 11 of the third decoder chip U3 of the 17th layer. After the signal is amplified by the Darlington transistor, it drives the contact of the fourth relay K4A to close. Thus, in this embodiment, the 17th battery detection channel 50 of the 17th layer has been enabled.

[0054] Example 3

[0055] like Figure 8 As shown, this embodiment provides a multi-channel battery detection device, including: a host computer 1, several layers of detection layers 2, a common circuit board 3, several circuit main boards 4, a measuring instrument 5, and a multi-channel battery detection circuit as described in Embodiment 1 or Embodiment 2.

[0056] In this multi-channel battery detection circuit, the signal transmission module 10 and the layer selection module 20 are mounted on the common circuit board 3, while the common control module 30 and the detection channel selection module 40 are mounted on each layer's main circuit board 4. The main circuit board 4 is integrated into each layer's detection board 2. The battery detection channel 50 is mounted on the detection board 2. The common circuit board 3 is mainly used to select and activate each layer's detection board 2 for detection.

[0057] The host computer 1 is connected to the common control module 30 via the signal transmission module 10, and the common circuit board 3 is connected to the common control module 30 of each circuit motherboard 4 via the layer selection module 20. Each common control module 30 is connected to the first control switch module of the corresponding battery detection channel 50 on the same layer, and each detection channel selection module 40 is connected to the second control switch module of the corresponding battery detection channel 50 on the same layer. Each detection layer board 2 is provided with several battery detection slots, and the number of battery detection channels 50 matches the number of battery detection slots. Each battery detection slot is connected to one side of each battery detection channel 50 via a wire, and the measuring instrument 5 is connected to the other side of each battery detection channel 50 via a wire.

[0058] With the above-described structure, the working steps of this embodiment are as follows: First, the host computer 1 sends a detection command. After receiving the command, the common circuit board 3 activates one of the circuit motherboards 4. This circuit motherboard 4 activates the first control switch module of the battery detection channel 50. Then, the detection channel selection module 40 controls the second control switch module of the battery detection channel 50 to activate, and the battery detection channel 50 becomes conductive, connecting the battery to the tester and starting the test. If channel switching is required, the host computer 1 only needs to send a specific position command to achieve efficient switching.

[0059] Although the description of the present invention has been given in conjunction with the specific embodiments described above, it is obvious to those skilled in the art that many substitutions, modifications, and variations can be made based on the above description. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims. The above embodiments of the present invention are merely examples for clearly illustrating the invention and are not intended to limit the implementation of the invention. For those skilled in the art, other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the claims of the present invention.

Claims

1. A multi-channel battery detection circuit, comprising: The signal transmission module for outputting host computer control signals, a plurality of battery detection channels for connecting the battery detection slots with the measuring instrument, a plurality of detection channel selection modules for switching the battery detection channels, a plurality of common control modules for pre-opening all the battery detection channels of the same level, and a level selection module for switching the selection of a certain level of the layer plate are included. The level selection module includes a first decoding chip, the signal input end group of the first decoding chip is connected with the layer selection signal output end group of the signal transmission module, the signal output end group is connected with the enable end of the common control module of each corresponding level through the form of network numbering; the first control output end of the common control module is connected with the first control switch module of each battery detection channel arranged in the same level; the detection channel selection module includes a second decoding chip, the signal input end group of the second decoding chip is connected with the channel signal output end group of the signal transmission module, the enable end is connected with the second control output end of the common control module, and the channel signal output end group is connected with the second control switch module of each corresponding battery detection channel arranged in the same level through the form of network numbering.

2. The multi-channel battery detection circuit of claim 1, wherein, Each common control module is provided with a logic control module, the signal output end group of the first decoding chip is connected with the enable end of the corresponding logic control module through the form of network numbering; the signal input end group of the logic control module is connected with the common signal output end group of the signal transmission module, and the first control output end is connected with the enable end of the second decoding chip.

3. The multi-channel battery detection circuit of claim 2, wherein, The detection channel selection module is further provided with a third decoding chip; the second control output end of the logic control module is connected with the enable end of the third decoding chip; the signal input end group of the third decoding chip is connected with the channel signal output end group of the signal transmission module, and the channel signal output end group is connected with the second control switch module of each corresponding battery detection channel arranged in the same level through the form of network numbering.

4. The multi-channel battery detection circuit of claim 3, wherein, The model numbers of the first decoding chip, the second decoding chip and the third decoding chip are all CD4514BM96.

5. The multi-channel battery detection circuit of claim 3, wherein, The logic control module is further provided with a logic chip, a first transistor and a second transistor, the signal output end group of the first decoding chip is connected with the enable end of the logic chip through the form of network numbering; the signal input end group of the logic chip is connected with the common signal output end group of the signal transmission module, the first control output end is connected with the base of the first transistor, and the second control output end is connected with the base of the second transistor; the collector of the first transistor is connected with the enable end of the second decoding chip, and the emitter is grounded; the collector of the second transistor is connected with the enable end of the third decoding chip, and the emitter is grounded.

6. The multi-channel battery detection circuit of claim 5, wherein, The model number of the logic chip is 4073, and the first transistor and the second transistor are both NPN transistors.

7. The multi-channel battery detection circuit of claim 1, wherein, The level selection module and the detection channel selection module are each provided with a plurality of Darlington transistor chips for amplifying signals, which are arranged in the form of network numbers between the signal output end group of the first decoding chip and the enable end of the corresponding public control module of each level, and between the channel signal output end group of the second decoding chip and the third decoding chip and the second control switch module of the corresponding battery detection channel of the same level.

8. The multi-channel battery detection circuit of claim 7, wherein, The model of the Darlington transistor chip is TPM2803.

9. The multi-channel battery detection circuit of claim 1, wherein, The battery detection channel is further provided with a switch switching module for switching the measurement of the positive and negative electrodes and the shell, and the signal input end group of the switch switching module is connected with the battery detection switching signal output end group of the signal transmission module.

10. A multi-channel battery detection device, characterized by, It comprises: a host computer; a plurality of detection layer plates arranged in levels; a public circuit board for selecting to open the detection layer plates for detection; a plurality of circuit mainboards matched with each detection layer plate; and a measuring instrument. The signal transmission module and the level selection module in the multi-channel battery detection circuit according to any one of claims 1-9 are arranged on the public circuit board, each of the circuit mainboards is provided with a public control module and a detection channel selection module; the host computer is connected with the public control module through the signal transmission module, and the public circuit board is connected with the public control module of each circuit mainboard through the level selection module; each public control module is connected with the first control switch module of the corresponding battery detection channel of the same level, and each detection channel selection module is connected with the second control switch module of the corresponding battery detection channel of the same level; each detection layer plate is provided with a plurality of battery detection slots and a plurality of battery detection channels matched with the battery detection slots, and each battery detection slot is connected with the measuring instrument through each battery detection channel.

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