Charging equipment using multiplexing line mode
By using isolation chips and isolated power supplies in lithium battery chargers, CANL and CANH signals are connected to the common ground and positive lines, and the 12V voltage of the isolated power supply is connected to the negative lines, and the three wires are connected to the charging, solving the existing technology The structural complexity and cost increase caused by multiple lines simplifies the design and production of charging equipment.
Patent Information
- Application Number
- CN202421235833.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-05-31
AI Technical Summary
The signal communication between existing lithium batteries and chargers requires multiple lines, resulting in complex charger structure and increased production costs.
Using an isolation chip and an isolated power supply, the CANL and CANH of the communication signal are connected to the common ground GND and positive line BAT+ of the rechargeable battery, respectively, and the 12V voltage of the isolated power supply is connected to the negative line to realize the connection of three wires. Charge.
The internal structure of the charging unit and the rechargeable battery is simplified, the use of wires is reduced, and the production cost is reduced.
Smart Images
Figure CN222169380U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of charging parts, and in particular to a charging device using a multiplexed line mode. Background Art
[0002] With the popularization of batteries, traditional batteries are gradually withdrawing from the market, and lithium batteries are gradually occupying the dominant position in the battery market. Different from the charging method of lead-acid batteries, lithium batteries often need to communicate with the charger for signal communication to achieve a better charging effect, and signal communication requires additional wiring terminals to lead out, which will increase the complexity of the internal structure of the charger. Existing lithium batteries and chargers generally use CAN communication mode for signal communication. The CAN communication mode uses two wires, and a power line for activating the power supply is also required. In addition, the original charger and battery are connected with three wires, namely the positive wire, the negative wire and the ground wire, resulting in a total of six wires required for connecting the charger and the battery. At the same time, these wiring terminals are added to the charger, and the battery must also be equipped with the same wiring terminals as the charger in order to match the wiring terminals on the charger, so the internal wiring and structure of the battery become complicated, and the production cost is also increased accordingly. Utility Model Content
[0003] In view of the shortcomings of the prior art, the utility model provides a charging device using a multiplexed line method.
[0004] The purpose of the utility model is achieved through the following solutions:
[0005] A charging device using a multiplexed line method, comprising:
[0006] A charging unit, the charging unit comprising a power system, a first control system, a first isolation chip, a first activation power supply, a first isolation power supply and a first auxiliary power supply, the power system is electrically connected to the first control system, the first control system is electrically connected to the first isolation chip, and the first auxiliary power supply is electrically connected to the power system, the first control system and the first activation power supply respectively;
[0007] The power system has three ports, BAT-, BAT+ and GND; the first isolation chip includes a primary side and a secondary side; the primary side has four ports, VCC, RXD, TXD and GND; the secondary side has four ports, Vref, CANL, CANH and Rs; the first isolated power supply has input terminal No. 1, input terminal No. 2, output terminal No. 5 and output terminal No. 7; the GND port of the power system is electrically connected to the CANL port of the first isolation chip and output terminal No. 5 of the first isolated power supply; the BAT+ port of the power system is electrically connected to the CANH port of the first isolation chip; the BAT- port of the power system is electrically connected to output terminal No. 7 of the first isolated power supply; input terminal No. 1 and input terminal No. 2 of the first isolated power supply are electrically connected to the first activation power supply; and
[0008] A rechargeable battery, wherein the rechargeable battery comprises a BMS system, a second control system, a second isolation chip, a second activation power supply, a second isolation power supply, a second auxiliary power supply and a battery pack, wherein the BMS system is electrically connected to the second control system, the BMS system is electrically connected to the battery pack, the BMS system is electrically connected to the three ports BAT-, BAT+ and GND of the power system, the second control system is electrically connected to the second isolation chip, and the second auxiliary power supply is electrically connected to the BMS system, the second control system and the second activation power supply respectively;
[0009] The second isolation chip includes a primary side and a secondary side, the primary side has four ports, VCC, RXD, TXD and GND, the secondary side has four ports, Vref, CANL, CANH and Rs, the second isolated power supply has output terminal No. 1, output terminal No. 2, input terminal No. 5 and input terminal No. 7, the CANL port of the second isolation chip is electrically connected to the corresponding CANL port of the first isolation chip; the CANH port of the second isolation chip is electrically connected to the CANH port of the first isolation chip, the CANH port of the second isolation chip is electrically connected to the BAT+ port of the power system, the output terminal No. 1 and the output terminal No. 2 of the second isolated power supply are electrically connected to the second activation power supply, the input terminal No. 7 of the second isolated power supply is electrically connected to the BAT-port of the power system, the input terminal No. 7 of the second isolated power supply is electrically connected to the output terminal No. 7 of the first isolated power supply, and the input terminal No. 5 of the second isolated power supply is electrically connected to the output terminal No. 5 of the first isolated power supply.
[0010] In one embodiment, the charging unit further includes a first other power supply, the first other power supply is electrically connected to the first auxiliary power supply system, and the first other power supply is electrically connected to Vref of the secondary side of the first isolation chip.
[0011] In one embodiment, the rechargeable battery further includes a second other power supply, the second other power supply is electrically connected to the second auxiliary power supply system, and the second other power supply is electrically connected to Vref of the secondary side of the second isolation chip.
[0012] In one implementation manner, the first other power supply voltage is 5V.
[0013] In one implementation manner, the second other power supply voltage is 5V.
[0014] In one implementation manner, the voltage at output terminal No. 7 of the first isolated power supply is 12V.
[0015] In one embodiment, the voltage at the input terminal 2 of the second activation power supply is 12V.
[0016] Compared with the prior art, the utility model has at least the following advantages:
[0017] The utility model discloses a charging device using a multiplexed line method, by using an isolation chip and an isolation power supply, connecting CANL and CANH of a communication signal to a common ground line GND of a rechargeable battery and a positive line BAT+ of the rechargeable battery respectively; connecting the 12V voltage and the common ground line GND of a first isolation power supply and a second isolation power supply in a charging unit and a rechargeable battery to a negative line of the rechargeable battery and the common ground line GND respectively, thereby the charging unit and the rechargeable battery can be connected for charging using only three wires, thereby reducing the use of wires and simplifying the internal structures of the charging unit and the rechargeable battery. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:
[0019] Figure 1 is the circuit structure diagram,
[0020] Among them, the figure is marked as a charging device 10 using a multiplexed line method; 100. Charging unit, 110. Power system; 120. First control system; 130. First isolation chip; 140. First activation power supply; 150. First isolation power supply; 160. First auxiliary power supply; 170. First other power supply; 200. Rechargeable battery; 210. BMS system; 220. Second control system; 230. Second isolation chip; 240. Second activation power supply; 250. Second isolation power supply; 260. Second auxiliary power supply; 270. Battery pack; 280. Second other power supply. DETAILED DESCRIPTION
[0021] The following will disclose multiple embodiments of the present invention with drawings. For the purpose of clear description, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present invention. In other words, in some embodiments of the present invention, these practical details are not necessary. In addition, in order to simplify the drawings, some conventional structures and components will be depicted in a simple schematic manner in the drawings.
[0022] It should be noted that all directional indications such as up, down, left, right, front, back... in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.
[0023] In addition, in the present utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present utility model. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0024] In order to further understand the content, features and effects of the utility model, the following embodiments are given as examples and described in detail with reference to the accompanying drawings:
[0025] like Figure 1 As shown, a charging device 10 using a multiplexed line method includes: a charging unit 100 and a rechargeable battery 200. The charging unit 100 is internally provided with a power system 110, a first control system 120, a first activation power supply 140, a first isolated power supply 150, a first isolation chip 130 and a first auxiliary power supply 160, wherein the first isolation chip 130 is ISO1050DUB, and the first isolated power supply is H1212S-2WR2.
[0026] The first auxiliary power supply 160 is electrically connected to the power system 110, the first control system 120, and the first activation power supply 140. The first auxiliary power supply 160 is also connected to the mains power supply. The mains power supply transmits electric energy to the first auxiliary power supply 160, so that the first auxiliary power supply 160 is activated, thereby providing electric energy to the power system 110, the first control system 120, and the first activation power supply 140, so that the power system 110, the first control system 120, and the first activation power supply 130 can start to work normally.
[0027] The first isolated power supply 150 has input terminal No. 1, input terminal No. 2, output terminal No. 5 and output terminal No. 7. Input terminal No. 1 and input terminal No. 2 of the first isolated power supply 150 are electrically connected to the first activation power supply 140. When the first activation power supply 140 is working, power is supplied to input terminal No. 1 and input terminal No. 2 of the first isolated power supply 150, thereby activating the first isolated power supply 150.
[0028] like Figure 1 As shown, the rechargeable battery 200 is internally provided with a BMS system 210, a second control system 220, a second isolation chip 230, a second activation power supply 240, a second isolated power supply 250, a second auxiliary power supply 260 and a battery pack 270, wherein the second isolation chip 130 model is ISO1050DUB, and the second isolated power supply model is H1212S-2WR2.
[0029] The second auxiliary power supply 260 is electrically connected to the BMS system 210, the second control system 220, and the second activation power supply 240. The second isolated power supply 250 has output terminal No. 1, output terminal No. 2, input terminal No. 5, and input terminal No. 7. Output terminal No. 1 and output terminal No. 2 of the second isolated power supply 250 are electrically connected to the second activation power supply 240.
[0030] Reference Figure 1 As shown, the first isolation chip 130 and the second isolation chip 260 both include a primary side and a secondary side, the primary side includes four ports, VCC, RXD, TXD and GND, and the secondary side includes four ports, Vref, CANL, CANH and Rs;
[0031] The first control system 120 is electrically connected to the four ports of the primary side VCC, RXD, TXD and GND of the first isolation chip 150, and the second control system 220 is electrically connected to the four ports of the primary side VCC, RXD, TXD and GND of the second isolation chip 250;
[0032] The power system 110 includes three ports, namely BAT-, BAT+ and GND. The GND port is electrically connected to the CANL port of the first isolation chip 130 and the No. 5 output terminal of the first isolation power supply 150. The BAT+ port is electrically connected to the CANH port of the first isolation chip 130. The BAT- port is electrically connected to the No. 7 output terminal of the first isolation power supply 150. The charging method of the rechargeable battery 200 is direct current charging. The power system 110 is an AC / DC module, which can rectify the city power and convert the alternating current into direct current, thereby realizing the DC charging function of the charging unit 100 for the rechargeable battery 200. The model of the AC / DC module is HE24P24LRN.
[0033] The three ports BAT-, BAT+ and GND of the power system 110 are electrically connected to the BMS system 210, the BAT+ port is electrically connected to the CANH pin of the second isolation chip 230, and the BAT- port is electrically connected to the No. 2 input terminal of the second isolation power supply 250;
[0034] The power system 110 is electrically connected to the first control system 120 .
[0035] It should be noted that when the first auxiliary power supply 160 supplies power to the power system 110, the first control system 120 and the first activation power supply 140, the first control system 120 sends a charging signal instruction to the power system 110, and at the same time, the first control system 120 supplies power to the first isolation chip 130 through the VCC port, and sends signal instructions CANH and CANL to the inside of the first isolation chip 130 through the TXD port of the primary side of the first isolation chip 130. Through the signal processing of the first isolation chip 130, the CANH and CANL digital signals are isolated for analog signal transmission, thereby using the connecting wires of the GND port of the power system 110 and the connecting wires of the BAT+ port for transmission, so that there is no need to separately lead out the CANH and CANL transmission lines for transmitting the CANH and CANL signals, thereby reducing the number of wires and simplifying the structure.
[0036] Reference Figure 1 The output terminal No. 5 of the first isolated power supply 150 is electrically connected to the input terminal No. 1 of the second isolated power supply 250 , and the output terminal No. 7 of the first isolated power supply 150 is electrically connected to the input terminal No. 2 of the second isolated power supply 250 .
[0037] The first auxiliary power supply 160 provides electric energy to the first activation power supply 140, so that the first isolated power supply 150 is activated, thereby, the first isolated power supply 150 transfers electric energy to the second isolated power supply 250, the second isolated power supply 250 is activated, and the second isolated power supply 250 provides electric energy to the second activation power supply 240; when the second activation power supply 240 is activated, it provides electric energy to the BMS system 210 and the second control system 220, ensuring that the BMS system 210 and the second control system 220 can work normally.
[0038] It should be noted that the first isolated power supply 150 has a negative voltage output, and the output voltage is direct current, so the output terminal No. 7 of the first isolated power supply 150 can be directly output through the BAT- of the power system 110, and the output terminal No. 5 is GND, which can be shared with the GND port of the power system 110, so that the two output lines of the isolated power supply can be shared with the BAT- and GND of the power system 110 to achieve the purpose of simplifying the wires.
[0039] like Figure 1 As shown, the CANL port of the first isolation chip 130 is electrically connected to the CANL port of the second isolation chip 230, the CANH port of the first isolation chip 130 is electrically connected to the CANH port of the second isolation chip 230, the BMS system 210 is electrically connected to the second control system 220, and the BMS system 210 is electrically connected to the battery pack 270.
[0040] When the CANH and CANL signals are transmitted to the secondary CANL port and CANH port of the second isolation chip 230 through the connection lines of the BAT+ port and the GND port of the power system 110, and then transmitted to the second control system 220 through the primary RXD port, the second control system 220 controls the start of the BMS system 210. When the BMS system 210 is turned on, the battery pack 270 can be charged, thereby completing the complete steps of the charging unit 100 charging the rechargeable battery 200.
[0041] In another embodiment, the charging unit 100 further includes a first other power supply 170, which is electrically connected to the first auxiliary power supply 160, and the first other power supply 170 is electrically connected to the Vref port of the secondary side of the first isolation chip 130. Specifically, the voltage of the first other power supply 170 is 5V.
[0042] It should be noted that the Vref port of the first isolation chip 130 is a reference voltage port. Accessing the reference voltage can ensure the stable operation of the first isolation chip 130 and avoid malfunction of the first isolation chip 130 due to fluctuations in the input voltage Vcc.
[0043] In another embodiment, the rechargeable battery 200 further includes a second other power supply 280, which is electrically connected to the second auxiliary power supply 260, and the second other power supply 280 is electrically connected to Vref of the secondary side of the second isolation chip 230. Specifically, the voltage of the second other power supply 280 is 5V.
[0044] It should be noted that the Vref port of the second isolation chip 230 is a reference voltage port. Accessing the reference voltage can ensure the stable operation of the second isolation chip 230 and avoid malfunction of the second isolation chip 230 due to fluctuations in the input voltage Vcc.
[0045] Preferably, the voltage of output terminal 7 of the first isolated power supply 150 is 12V.
[0046] Preferably, the voltage of input terminal 2 of the second activation power supply 240 is 12V.
[0047] The above is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.
Claims
1. A charging device using a multiplexed line method, characterized in that: include: A charging unit, the charging unit comprising a power system, a first control system, a first isolation chip, a first activation power supply, a first isolation power supply and a first auxiliary power supply, the power system is electrically connected to the first control system, the first control system is electrically connected to the first isolation chip, and the first auxiliary power supply is electrically connected to the power system, the first control system and the first activation power supply respectively; The power system has three ports, BAT-, BAT+ and GND; the first isolation chip includes a primary side and a secondary side; the primary side has four ports, VCC, RXD, TXD and GND; the secondary side has four ports, Vref, CANL, CANH and Rs; the first isolated power supply has input terminal No. 1, input terminal No. 2, output terminal No. 5 and output terminal No. 7; the GND port of the power system is electrically connected to the CANL port of the first isolation chip and the output terminal No. 5 of the first isolated power supply; the BAT+ port of the power system is electrically connected to the CANH port of the first isolation chip; the BAT- port of the power system is electrically connected to the output terminal No. 7 of the first isolated power supply; the input terminal No. 1 and the input terminal No. 2 of the first isolated power supply are electrically connected to the first activation power supply; and A rechargeable battery, wherein the rechargeable battery comprises a BMS system, a second control system, a second isolation chip, a second activation power supply, a second isolation power supply, a second auxiliary power supply and a battery pack, wherein the BMS system is electrically connected to the second control system, the BMS system is electrically connected to the battery pack, the BMS system is electrically connected to the three ports BAT-, BAT+ and GND of the power system, the second control system is electrically connected to the second isolation chip, and the second auxiliary power supply is electrically connected to the BMS system, the second control system and the second activation power supply respectively; The second isolation chip includes a primary side and a secondary side, the primary side has four ports, VCC, RXD, TXD and GND, the secondary side has four ports, Vref, CANL, CANH and Rs, the second isolation power supply has output terminal 1, output terminal 2, input terminal 5 and input terminal 7, and the CANL port of the second isolation chip is electrically connected to the corresponding CANL port of the first isolation chip; The CANH port of the second isolation chip is electrically connected to the CANH port of the first isolation chip, the CANH port of the second isolation chip is electrically connected to the BAT+ port of the power system, the output terminal No. 1 and the output terminal No. 2 of the second isolated power supply are electrically connected to the second activation power supply, the input terminal No. 7 of the second isolated power supply is electrically connected to the BAT- port of the power system, the input terminal No. 7 of the second isolated power supply is electrically connected to the output terminal No. 7 of the first isolated power supply, and the input terminal No. 5 of the second isolated power supply is electrically connected to the output terminal No. 5 of the first isolated power supply.
2. A charging device using a multiplexed line method according to claim 1, characterized in that: The charging unit also includes a first other power supply, the first other power supply is electrically connected to the first auxiliary power supply system, and the first other power supply is electrically connected to Vref of the secondary side of the first isolation chip.
3. A charging device using a multiplexed line method according to claim 1, characterized in that: The rechargeable battery also includes a second other power supply, the second other power supply is electrically connected to the second auxiliary power supply system, and the second other power supply is electrically connected to Vref of the secondary side of the second isolation chip.
4. A charging device using a multiplexed line method according to claim 2, characterized in that: The first other power supply voltage is 5V.
5. A charging device using a multiplexed line method according to claim 3, characterized in that: The second other power supply voltage is 5V.
6. A charging device using a multiplexed line method according to claim 1, characterized in that: The voltage at output terminal No. 7 of the first isolated power supply is 12V.
7. A charging device using a multiplexed line method according to claim 1, characterized in that: The voltage at the input terminal No. 2 of the second activation power supply is 12V.