Battery management component, battery pack and gardening tool

Abstract

According to the battery management component, the battery pack and the gardening tool, the battery management component comprises at least two of the control device, the data conversion device and the working mode switching device, the control device is connected with the data acquisition device to obtain parameter information of a battery cell, and the data conversion device is connected with the working mode switching device. And the control device is also connected with the external equipment through the data conversion device, the obtained parameter information of the battery cell and the information of the external equipment are mutually transmitted through the data conversion device, and the charging and discharging parameter information of the battery can be accurately determined, so that the charging and discharging of the battery pack are more efficiently controlled, and the experience feeling of a user is improved.

Description

[Technical Field]

[0001] The utility model relates to the technical field of batteries, and in particular to a battery management component, a battery pack and a garden tool. [Background Art]

[0002] With the wide popularity of lithium battery products, garden electric tools have also widely entered everyone's field of vision. At present, the battery packs on the market generally have low battery life, cannot meet the battery life requirements of users, and have low safety when multiple packs are combined, and require a long charging time.

[0003] In view of this, it is necessary to provide a battery management component to overcome the defects of the prior art. [Summary of the Invention]

[0004] Aiming at the deficiencies of the related art, the purpose of the utility model is to provide a battery management component, a battery pack and a garden tool, which can accurately and precisely determine the information related to the working state of the battery.

[0005] In a first aspect, the utility model provides a battery management component, which includes at least two of a control device, a data conversion device, and a working mode switching device;

[0006] The control device is respectively connected to the battery and an external device;

[0007] The external device is used for charging and discharging the battery;

[0008] Wherein the control device is connected to the data conversion device,

[0009] And / or,

[0010] The control device is connected to the working mode switching device;

[0011] The data conversion device can be used for data transmission between the control device and the external device;

[0012] The working mode switching device can be used for switching the working mode of the external device.

[0013] In one embodiment, the battery management component further includes a data acquisition device, and the data acquisition device is connected to the control device and the battery.

[0014] In one embodiment, the control device is connected to the data conversion device, and the data conversion device is connected to the external device.

[0015] In one embodiment, the data acquisition device acquires the battery parameters, and the data acquisition device includes at least one of a voltage detection device, a temperature detection device, and a current detection device;

[0016] The voltage detection device is connected to the battery to measure the voltage information of the battery;

[0017] And / or

[0018] The temperature detection device is connected to the battery to measure the temperature information of the battery;

[0019] And / or

[0020] The current detection device is connected to the battery to measure the current information of the battery.

[0021] In one embodiment, the battery parameters are transmitted in multiple lines between the control device and the data conversion device;

[0022] The transmission mode between the data conversion device and the external device is single-line and / or multi-line transmission.

[0023] In one embodiment, the control device includes a processor, a discharge switch, a charge switch, and an information processing device,

[0024] The processor is respectively connected to the information processing device, the discharge switch, and the charge switch.

[0025] In one embodiment, the first end of the discharge switch and the first end of the charge switch are connected to the positive electrode of the battery;

[0026] The third end of the discharge switch and the third end of the charge switch are connected to the processor;

[0027] The second end of the discharge switch is connected to the fourth end of the charge switch;

[0028] In one embodiment, the battery management component further includes a protection device, and the protection device is connected to the positive electrode of the battery and the positive input end of the battery management component;

[0029] The protection device is used to prevent thermal runaway during the charging or discharging process of the battery.

[0030] In a second aspect, the present utility model provides a battery pack, and the battery pack includes the battery management component provided in the first aspect embodiment above.

[0031] In a third aspect, the present utility model provides a garden tool, and the garden tool includes the battery pack provided in the second aspect embodiment above.

[0032] Compared with the related technologies, the utility model has the following beneficial effects: The battery management component, battery pack and garden tool provided by the utility model, the battery management component includes at least two of a control device, a data conversion device, and a working mode switching device. The control device is connected to the data acquisition device to obtain parameter information of the battery cells. The control device is also connected to an external device through the data conversion device, and the parameter information of the battery cells obtained is transmitted to and from the external device through the data conversion device, so as to accurately determine the charge and discharge parameter information of the battery, thereby more efficiently controlling the charge and discharge of the battery pack and improving the user experience. [Description of the Drawings]

[0033] The following further describes in detail the specific embodiments of the utility model with reference to the drawings:

[0034] Figure 1 It is a schematic framework diagram of a battery management component according to a preferred embodiment of the utility model;

[0035] Figure 2 It is a schematic framework diagram of a battery management component according to a preferred embodiment of the utility model;

[0036] Figure 3 It is a schematic framework diagram of a battery management component according to a preferred embodiment of the utility model;

[0037] Figure 4 It is a schematic framework diagram of a battery management component according to a preferred embodiment of the utility model;

[0038] Figure 5 It is a schematic framework diagram of a battery management component according to a preferred embodiment of the utility model;

[0039] The meanings of the reference numerals in the drawings:

[0040] 1 Battery 6 External device

[0041] 2 Data acquisition device 7 Fuse

[0042] 3 Control device 8 Battery management component

[0043] 4 Data conversion device 21 Voltage detection device

[0044] 22 Temperature detection device 32 Processor

[0045] 23 Current detection device 33 Discharge switch

[0046] 31 Information processing device 34 Charge switch [Specific Embodiments]

[0047] The terms used in the present utility model are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. For example, the terms indicating orientation or positional relationship such as "upper", "lower", "front", "rear", etc. are only based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device / component referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present utility model.

[0048] Please refer to Figure 2 As described above, the present utility model provides a battery management component 8, which includes a data acquisition device 2 and a control device 3. The battery management component 8 is connected to a battery pack 1 and an external device 5 through a data conversion device 4. The data acquisition device 2 is connected to both ends of the battery pack 1 and is used to acquire battery parameter information of the battery pack.

[0049] In practical applications, the implementation of the battery management system 8 can be realized on a circuit board, which is directly connected to the battery pack 1 to control the external output and input of the battery pack 1.

[0050] Please refer to Figure 2 As shown, the positive output terminal controlled by the battery management system 8 is P+, and the negative output terminal is P-. Among them, the positive terminal of the battery pack 1 is B+, and the negative terminal is B-. In this embodiment, the battery pack 1 can be a single-cell battery or a battery pack formed by connecting multiple batteries in series and parallel.

[0051] Please refer to Figure 3 As shown, the data acquisition module 2 includes a voltage detection device 21, a temperature detection device 22, and a current detection device 23. The voltage detection device 21, the temperature detection device 22, and the current detection device 23 are respectively connected to the battery pack 1 and the control device 3. The voltage detection device is used to measure the voltage parameter information of the battery pack 1, the temperature detection device 22 is used to detect the temperature parameter information of the battery pack 1, and the current detection device 23 is used to detect the current parameter information of the battery pack 1.

[0052] The voltage detection device 21 can also measure the voltage of a single cell in the battery pack 1 and the voltage of each power supply module; the temperature detection device 22 is composed of multiple temperature sensors and can detect the temperature of a single cell inside the battery pack 1, as well as the temperature of power devices (not shown in the figure) and sampling devices (not shown in the figure) in the battery management component 8. The current detection device is used to detect the charging current and discharging current of the main circuit of the circuit.

[0053] Please refer to Figure 4, the control device 3 includes an information processing device 31, a processor 32, a discharge switch 33, and a charging switch 34. The information processing device 31 is connected to the data acquisition device 2 and is used to process the parameter information of the battery pack 1 collected by the data acquisition device 2, convert the voltage parameter signal, temperature parameter signal, and current parameter signal into electrical signals and transmit them to the processor 32. The discharge switch 33 and the charging switch 34 are connected to the processor 32. The first end of the discharge switch 33 and the first end of the charging switch 34 are connected to the positive end of the battery pack 1. The third end of the discharge switch 33 and the third end of the charging switch 34 are connected to the processor 32. The second end of the discharge switch 33 is connected to the fourth end of the charging switch 34. After receiving the data processed by the signal processing device 31, the processor 32 calculates the optimal discharge parameters and optimal charging parameters of the battery pack 1 through the SOC. Among them, the optimal discharge parameters are at least one of whether the battery pack 1 allows discharge and the discharge power, and the optimal charging parameters are the shortest charging time for the battery pack 1 to be charged with the maximum current without overheating during charging.

[0054] The processor 32 is connected to the data conversion device 4 and transmits the optimal discharge parameters and optimal charging parameters of the processed battery pack 1 to the data conversion device 4. The data conversion device 4 transmits the optimal discharge parameters and optimal charging parameters to the external device 5.

[0055] Multi-line data transmission is performed between the processor 32 and the data conversion device 4, including but not limited to I2C, SPI, etc. The data conversion device 4 and the external device 5 can perform single-line data transmission through UART serial communication or DHT11, or can perform multi-line data transmission through a CAN bus, etc.

[0056] The external device 5 is at least two devices with different functions. In this embodiment, the external device can be a charger or a gardening tool. The external device 5 can also transmit the data it receives to the control device 3 through the data conversion device 4.

[0057] In practical applications, the control device 3 can also be implemented by a main control circuit composed of multiple connections. Of course, the control device 3 can be implemented by a microcontroller unit (MCU). This embodiment does not limit this.

[0058] In some scenarios, protection measures can also be set to prevent the occurrence of thermal runaway, such as Figure 5 As shown, in one embodiment, the above-mentioned battery management component 8 further includes a protection device 7 for preventing thermal runaway during the charging or discharging process of the battery pack 1. Optionally, the protection device 7 can be a fuse. In other embodiments, the protection device can also be an anti-reverse circuit or a fuse. This embodiment does not limit other embodiments.

[0059] In addition, the present utility model provides a battery pack, which includes the battery management component provided in any of the above embodiments. The battery pack is composed of the battery pack 1 and the battery management component 8.

[0060] A garden tool is also provided, which includes the battery pack provided in any of the above embodiments.

[0061] A battery management component, a battery pack and a garden tool provided by the present utility model can collect the parameter information of the battery pack through the data acquisition device of the battery management component, and through calculation, can better and more accurately control the charging and discharging of the battery pack, ensuring the safety of the battery, meeting the user's needs and increasing the user satisfaction.

[0062] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0063] The above-described embodiments only represent several implementation manners of the embodiments of the present disclosure. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the embodiments of the present disclosure, several deformations and improvements can still be made, and these all belong to the protection scope of the embodiments of the present disclosure. Therefore, the protection scope of the patent of the embodiments of the present disclosure should be subject to the appended claims.

Claims

1. A battery management component, characterized in that: The battery management component includes: at least two of a control device, a data conversion device, and a working mode switching device; The control device is connected to the battery and the external device respectively; The external device is used for charging and discharging the battery; The control device is connected to the data conversion device. and, or, The control device is connected to the working mode switching device; The data conversion device can be used for data transmission between the control device and the external device; The working mode switching device can be used to switch the working mode of the external device.

2. The battery management component according to claim 1, characterized in that: The battery management component also includes a data acquisition device, which is connected to the control device and the battery.

3. The battery management component according to claim 1, characterized in that: The control device is connected to the data conversion device, and the data conversion device is connected to the external device.

4. The battery management component according to claim 2, characterized in that: The data acquisition device collects battery parameters, and the data acquisition device includes: at least one of a voltage detection device, a temperature detection device, and a current detection device; The voltage detection device is connected to the battery to measure the voltage information of the battery; and, or The temperature detection device is connected to the battery to measure the temperature information of the battery; and, or The current detection device is connected to the battery to measure the current information of the battery.

5. The battery management component according to claim 4, characterized in that: The battery parameters are transmitted through multiple lines between the control device and the data conversion device; The transmission mode between the data conversion device and the external device is single-line and / or multi-line transmission.

6. The battery management component according to claim 1, characterized in that: The control device comprises: a processor, a discharge switch, a charge switch and an information processing device, and the processor is connected to the information processing device, the discharge switch and the charge switch respectively.

7. The battery management component according to claim 6, characterized in that: The first end of the discharge switch and the first end of the charge switch are connected to the positive electrode of the battery; The third end of the discharge switch and the third end of the charge switch are connected to the processor; The second end of the discharge switch is connected to the fourth end of the charge switch.

8. The battery management component according to any one of claims 1 to 7, characterized in that: The battery management component further comprises a protection device, wherein the protection device is connected to the positive electrode of the battery and the positive input terminal of the battery management component; The protection device is used to prevent thermal runaway during charging or discharging of the battery.

9. A battery pack, characterized in that: The battery pack comprises the battery management component according to any one of claims 1 to 8.

10. A garden tool, characterized in that: The garden tool comprises the battery pack according to claim 9.

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