Charger and power supply device

Abstract

The utility model discloses a charger and a power supply device, and relates to the technical field of power supply equipment. The charger comprises a box body; the charger system is arranged in the box body, and the charger system is used for being electrically connected with a battery pack and a load; and the battery management system is arranged in the box body, the battery management system is arranged independent of the charger system, the battery management system is used for being connected with the battery pack, and the battery management system is used for managing the use of the battery pack. According to the charger provided by the invention, the health management of the battery pack can be realized while the charger function is provided.

Description

Technical Field

[0001] The present application relates to the technical field of power supply equipment, and in particular to a charger and a power supply device. Background Art

[0002] The charger converts the mains voltage into a DC output voltage suitable for various electronic devices and stores the electrical energy in the battery.

[0003] However, the charger in the existing locomotive can only charge the battery and provide power to the locomotive load, and its functions are relatively simple. Utility Model Content

[0004] The present application provides a charger and a power supply device, which can provide charger functions while achieving health management of the battery pack.

[0005] The present application provides a charger, comprising:

[0006] Box;

[0007] A charger system is provided in the box, and is used to electrically connect the battery pack and the load;

[0008] A battery management system is provided in the box, and the battery management system is provided independently of the charger system. The battery management system is used to connect to the battery pack and manage the use of the battery pack.

[0009] In some possible embodiments, the battery management system includes a detection unit and a main control unit, the detection unit is connected to the main control unit via a first CAN bus, the detection unit is used to connect to the battery pack, and the detection unit is used to detect the voltage and temperature of each battery in the battery pack in real time.

[0010] In some possible implementations, the detection unit includes several detection modules, any of which is connected to at least one storage battery in the battery pack, and is configured to detect the voltage and temperature of the storage battery to which it is connected.

[0011] In some possible implementations, the battery management system further includes a current sensor, which is connected to the main control unit and the power supply end of the battery pack respectively, and is used to detect the output current of the battery pack.

[0012] In some possible implementations, the battery management system further includes a display unit, and the display unit is connected to the main control unit via a 485 bus.

[0013] In some possible implementations, the battery management system further includes a storage unit, which is connected to the main control unit via a second CAN bus, and the detection data of the detection unit is stored in the storage unit.

[0014] In some possible implementations, the battery management system further includes a circuit breaker, one end of the circuit breaker is connected to the main control unit, and the other end of the circuit breaker is connected to the power supply line of the battery pack.

[0015] In some possible implementations, the battery management system further includes a speaker connected to the main control unit, and the speaker is configured to provide an alarm function.

[0016] In addition, the present application also provides a power supply device, including the charger provided in the above embodiments;

[0017] The battery pack is connected to the charger system and the battery management system respectively.

[0018] In some possible implementations, the battery pack includes a plurality of batteries, and the battery management system includes a main control unit and a plurality of detection modules;

[0019] Any of the batteries is connected to one of the detection modules, and any of the detection modules is connected to at least one of the batteries.

[0020] The beneficial effects of this application are as follows: In the charger provided by this application, the charger system and battery management system are integrated into the same housing, and the battery management system is independently provided. Thus, the charger system and battery management system can be integrated without disrupting the electrical relationship of the original charger system, achieving the original functions of the charger while also achieving health management of the battery pack. At the same time, the utilization rate of the original charger's internal space can be improved, and the additional space occupied by the installation equipment due to the separate battery management system can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 Shows a schematic structural diagram of a power supply device in some embodiments;

[0023] Figure 2 Shows a schematic structural diagram of a charger in some embodiments;

[0024] Figure 3 A schematic diagram of the internal structure of a charger in some embodiments is shown.

[0025] Description of main component symbols:

[0026] 1000-charger;

[0027] 100-Charger system;

[0028] 200 - battery management system; 210 - main control unit; 220 - detection unit; 221 - detection module; 231 - first CAN bus; 232 - second CAN bus; 240 - display unit; 250 - 485 bus; 260 - current sensor; 270 - circuit breaker; 280 - storage unit;

[0029] 300-cabinet;

[0030] 2000-battery pack;

[0031] 3000-load. DETAILED DESCRIPTION

[0032] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0033] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0035] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0036] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0037] like Figures 1 to 3 As shown, an embodiment provides a charger 1000 , which may include a housing 300 , a charger system 100 , and a battery management system 200 .

[0038] The charger system 100 and the battery management system 200 are both housed in a housing 300, and the battery management system 200 operates independently of the charger system 100. During use, both the charger system 100 and the battery management system 200 are connected to the battery pack 2000, with the charger 1000 also connected to the power-receiving load 3000. The charger system 100 converts the electrical energy output by the battery pack 2000 to output power that meets the requirements of the load 3000 and transmits it to the load 3000. The battery management system 200 is used to manage the operating status of the battery pack 2000, including the charging and discharging processes of the battery pack 2000. The load 3000 can be a power-receiving device in a locomotive with a rated DC voltage of 110V. The locomotive can be a high-speed EMU passenger train or a multi-unit passenger train.

[0039] Of course, in other embodiments, the load 3000 may also be a power receiving structure in electric vehicles, electric trucks and other electrical equipment.

[0040] In the charger 1000 provided herein, the charger system 100 and the battery management system 200 are integrated into the same housing 300, and the battery management system 200 is independently provided. This allows the charger system 100 and the battery management system 200 to be integrated without disrupting the existing electrical connections of the charger system 100. This allows for the management of the battery pack 2000 while maintaining the original functions of the charger 1000. This also improves the internal space utilization of the existing charger 1000 and avoids the additional space occupied by the separate battery management system 200.

[0041] In some embodiments, the hardware structure of the charger system 100 may be rearranged to free up space for installing the hardware structure of the battery management system 200 .

[0042] In other embodiments, when there is enough space on one side of the hardware structure of the charger system 100 for arranging the hardware structure of the battery management system 200 , there is no need to rearrange the hardware structure of the charger system 100 .

[0043] In the embodiment, the specific structure of the charger system 100 is not specifically limited here, and a charger system 100 adapted to the load 3000 can be selected as needed.

[0044] like Figure 1 As shown, the battery management system 200 may include a main control unit 210 and a detection unit 220 in communication with each other. The detection unit 220 may be connected to the battery pack 2000 and may detect the voltage and temperature of each battery in the battery pack 2000. The detection unit 220 may transmit the detected data to the main control unit 210, which may analyze and process the received detected data. In some embodiments, the main control unit 210 may utilize an STM32F407ZGT6 chip, which has a main frequency of up to 168 MHz.

[0045] In some embodiments, battery pack 2000 may include 48 batteries connected in parallel. Detection unit 220 may include four parallel detection modules 221. Each detection module 221 can connect to 12 batteries. Each detection module 221 can perform real-time temperature and voltage monitoring on each of the 12 batteries connected to it, and transmit the data to main control unit 210 for analysis and processing. In some embodiments, detection module 221 may utilize the MC33771 battery cell acquisition chip, and each detection module 221 can connect to up to 14 batteries.

[0046] In other embodiments, the battery pack 2000 may include 4, 6, 12, 36, or 48 batteries. The detection unit 220 may include 1, 3, or 5 detection modules 221. Each battery is connected to a detection module 221, and each detection module 221 may be connected to at least one battery.

[0047] In some embodiments, the detection module 221 may be communicatively connected to the main control unit 210 via a first controller area network (CAN) bus, that is, the detection module 221 may be communicatively connected to the main control unit 210 via a first CAN bus 231 .

[0048] like Figure 1 As shown, the battery management system 200 also includes a current sensor 260. One end of the current sensor 260 is connected to the main control unit 210, and the other end of the current sensor 260 can be connected to the power supply terminal of the battery pack 2000. The main control unit 210 can perform analog-to-digital (AD) conversion sampling on the current sensor 260. Thus, the current sensor 260 can detect the output current of the battery pack 2000 and send the detection signal to the main control unit 210, which then analyzes and processes the detection data.

[0049] In some embodiments, the battery management system 200 further includes a display unit 240, which can be communicatively connected to the main control unit 210 via the 485 bus 250. During operation, the main control unit 210 can send detection data to the display unit 240, and the display unit 240 can display the operating parameters of each battery.

[0050] In one embodiment, the battery management system 200 further includes a storage unit 280, which is communicatively connected to the main control unit 210 via the second CAN bus 232. The main control unit 210 can transmit detection data transmitted by the detection module 221 and the current sensor 260 to the storage unit 280, where the data is stored for subsequent retrieval. In some embodiments, the storage unit 280 can utilize an IS61LV51216 memory chip.

[0051] like Figure 1 As shown, the battery management system 200 further includes a circuit breaker 270. One end of the circuit breaker 270 can be connected to the main control unit 210, and the other end of the circuit breaker 270 can be connected to the power supply terminal of the battery pack 2000. In addition, the main control unit 210 can perform AD sampling on the circuit breaker 270. During operation, the circuit breaker 270 can be used to provide circuit protection.

[0052] In addition, the battery management system 200 further includes a speaker (not shown), which can be connected to the main control unit 210. When an abnormality occurs in the battery in the battery pack 2000, the speaker can sound an alarm to remind the operator to perform timely inspection and maintenance.

[0053] During operation, the detection module 221 can monitor the voltage and temperature of each battery in real time and transmit the detection data to the main control unit 210. Simultaneously, the current sensor 260 can detect the output current of the battery pack 2000 and transmit the detection data to the main control unit 210. The main control unit 210 can analyze and process the received detection data to determine whether each battery is operating properly. Taking voltage as an example, the main control unit 210 can compare the detected voltage data with a preset voltage. If the output voltage of a battery is lower than the preset voltage, it indicates that the battery is abnormal. The main control unit 210 can control the speaker to sound an alarm to alert the operator. At the same time, the main control unit 210 can transmit the battery's address information to the display unit 240, which displays it, allowing the operator to accurately identify the abnormal battery. It is understandable that each battery can be configured with unique address information and stored in the storage unit 280 , and preset values ​​such as preset voltage can also be stored in the storage unit 280 , and the main control unit 210 can retrieve them from the storage unit 280 .

[0054] In addition to realizing the original functions of the charger 1000, the charger 1000 provided in the embodiment can also realize the use management of the battery pack 2000. It can perform real-time voltage, current, temperature, S0C (battery state of charge), SOH (battery capacity, health) and other data detection on each battery in the battery pack 2000, and effectively evaluate the battery capacity and working status, and realize early warning, alarm, positioning and display functions for batteries that may have faults, so that operators can promptly detect faults and perform repairs.

[0055] like Figure 1 As shown, an embodiment further provides a power supply device, which may include a battery pack 2000 and a charger 1000 provided in the embodiment. The battery pack 2000 may be connected to the charger 1000. Furthermore, the battery pack 2000 may be electrically connected to a load 3000 to provide power to the load 3000.

[0056] In some embodiments, battery pack 2000 may include multiple batteries, each of which may be connected to a detection module 221, and each detection module 221 may be connected to at least one battery. In some embodiments, battery pack 2000 may include 48 batteries, and each detection module 221 may be connected to 12 batteries.

[0057] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0058] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A charger, characterized in that: include: Box; A charger system is provided in the box, and is used to electrically connect the battery pack and the load; A battery management system is provided in the box, and the battery management system is provided independently of the charger system. The battery management system is used to connect to the battery pack and manage the use of the battery pack.

2. The charger according to claim 1, characterized in that The battery management system includes a detection unit and a main control unit. The detection unit is connected to the main control unit via a first CAN bus. The detection unit is used to connect to the battery pack and detect the voltage and temperature of each battery in the battery pack in real time.

3. The charger according to claim 2, characterized in that: The detection unit includes a plurality of detection modules, any of which is connected to at least one storage battery in the battery pack, and is used to detect the voltage and temperature of the storage battery to which it is connected.

4. The charger according to claim 2, characterized in that: The battery management system further includes a current sensor, which is connected to the main control unit and the power supply end of the battery pack respectively, and is used to detect the output current of the battery pack.

5. The charger according to any one of claims 2 to 4, characterized in that: The battery management system further includes a display unit, which is connected to the main control unit via a 485 bus.

6. The charger according to any one of claims 2 to 4, characterized in that: The battery management system further includes a storage unit connected to the main control unit via a second CAN bus, and the detection data of the detection unit is stored in the storage unit.

7. The charger according to claim 2, characterized in that: The battery management system further includes a circuit breaker, one end of which is connected to the main control unit, and the other end of which is connected to the power supply circuit of the battery pack.

8. The charger according to claim 2, characterized in that: The battery management system further includes a speaker connected to the main control unit, and the speaker is used to provide an alarm function.

9. A power supply device, characterized in that: comprising a battery pack and a charger according to any one of claims 1 to 8; The battery pack is connected to the charger system and the battery management system respectively.

10. The power supply device according to claim 9, characterized in that: The battery pack includes a plurality of storage batteries, and the battery management system includes a main control unit and a plurality of detection modules; Any of the batteries is connected to one of the detection modules, and any of the detection modules is connected to at least one of the batteries.

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