Power supply device and vehicle

Abstract

The utility model provides a power supply device and a vehicle. The power supply device comprises a battery module, a heating part, a battery management module BMS and a power generation part. Wherein the battery module comprises a plurality of battery units, the battery units are used for storing and outputting electric energy, and single batteries are arranged in the battery units; the heating component is arranged on the outer side of the battery module, and the heating component is used for heating the battery module to a preset temperature according to the temperature of the battery module collected by the battery management module BMS; the power generation component is connected with the battery module and the heating component, and the power generation component is used for charging the battery module or supplying power to the heating component for heating according to the temperature of the battery module and the SOC of the battery module collected by the battery management module BMS.

Description

Technical Field

[0001] The present disclosure relates to the technical field of new energy batteries, and in particular, to a power supply device and a vehicle. Background Art

[0002] With the progress of new energy technology and large-scale production, the manufacturing and use costs of new energy batteries are decreasing, making electric vehicles and other new energy devices more affordable. Moreover, compared with traditional vehicles powered by fossil fuels, new energy batteries help reduce greenhouse gas emissions and air pollution.

[0003] However, in the north, especially in the northeast region, affected by the low-temperature environment, the winter temperature reaches -40 degrees Celsius. Vehicles using new energy batteries as the power source often fail to start at low temperatures or cannot be powered on after being stationary for a period of time, affecting daily use. Summary of the Utility Model

[0004] The purpose of this application is to provide a power supply device and a vehicle. On the one hand, this power supply device can solve the problem of starting new energy vehicles at low temperatures, and on the other hand, it can ensure the constant temperature effect of the battery of the new energy vehicle during short-term parking.

[0005] To solve the above technical problems, in the first aspect of the embodiments of the present disclosure, a power supply device is provided. The power supply device includes: a battery module 7, a heating component 4, a battery management module BMS 3, and a power generation component 11;

[0006] Among them, the battery module 7 includes a plurality of battery cells, and the battery cells are used for storing and outputting electric energy;

[0007] The heating component 4 is deployed outside the battery module 7, and the heating component 4 is used to heat the battery module 7 to a preset temperature according to the temperature of the battery module 7 collected by the battery management module BMS 3;

[0008] The power generation component 11 is connected to the battery module 7 and the heating component. The power generation component is used to charge the battery module 7 or supply power to the heating component for heating according to the temperature of the battery module 7 and the SOC of the battery module 7 collected by the battery management module BMS3.

[0009] In some embodiments, the power generation component 11 is a photovoltaic power generation device.

[0010] In some embodiments, the power supply device includes a flame-retardant heat-insulating foam 8 and an outer box 10;

[0011] The flame-retardant heat-insulating foam 8 is disposed between the battery module 7 and the outer box 10, and is used for flame retardancy and insulation between the battery module and the outer box, and for heat preservation of the battery module.

[0012] In some embodiments, the power supply device includes an insulating plate 9 disposed outside the battery module 7 and the heating component 4 for insulating between battery cells, between the battery module and the outer case 10, and between the heating component and the battery module.

[0013] In some embodiments, the battery module 7 is provided with a battery positive electrode 6 and a battery negative electrode 2 for inputting and outputting current to charge and discharge the battery module.

[0014] In some embodiments, the power supply device includes two battery connection terminals 5;

[0015] The two battery connection terminals 5 are respectively connected to the battery positive electrode 6 and the battery negative electrode 2 of the battery module 7;

[0016] The battery connection terminals serve as the input connection terminals of the power supply device during charging of the power supply device and as the output connection terminals of the power supply device during discharging of the power supply device.

[0017] In some embodiments, the battery management module BMS 3 is further configured to monitor the status data of the battery module 7;

[0018] The status data of the battery module includes: the battery voltage and the battery terminal temperature corresponding to the single battery; and the battery loop current, the battery pack terminal voltage, and the battery system insulation resistance corresponding to the battery module.

[0019] In some embodiments, the power supply device includes an audible and visual alarm;

[0020] The audible and visual alarm is configured to issue corresponding audible and visual warnings when the status data of the battery module 7 collected by the battery management module BMS 3 is abnormal.

[0021] A second aspect of the embodiments of the present disclosure provides a vehicle including the power supply device and a driving body, and the power supply device is configured to provide driving electric energy for the driving body.

[0022] In some embodiments, the power generation component 11 of the power supply device is disposed on the roof.

[0023] The embodiments of the present disclosure provide a power supply device, which includes: a battery module, a heating component, a battery management module BMS, and a power generation component. The heating component of the power supply device can heat the battery module to a preset temperature according to the temperature of the battery module collected by the battery management module BMS, and the power generation component can charge the battery module or supply power to the heating component for heating according to the temperature of the battery module and the SOC of the battery module collected by the battery management module BMS. On the one hand, the problem that new energy vehicles are difficult to start at low temperatures can be solved, and on the other hand, the effect of maintaining the battery at a constant temperature during short-term parking of new energy electric vehicles can be ensured. Description of the Drawings

[0024] To more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0025] Figure 1 is a schematic structural diagram of the power supply device disclosed in the embodiments of the present disclosure;

[0026] Figure 2 is a schematic distribution diagram of the heating components in the power supply device disclosed in the embodiments of the present disclosure;

[0027] Figure 3 is a schematic diagram of the power generation process of the power generation component disclosed in the embodiments of the present disclosure;

[0028] Figure 4A and Figure 4B is a schematic structural diagram of the outer box of the power supply device disclosed in the embodiments of the present disclosure;

[0029] Figure 5 is a schematic structural diagram of the power generation component disclosed in the embodiments of the present disclosure.

[0030] Explanation of Reference Numerals

[0031] 1. Temperature control module

[0032] 2. Battery negative electrode

[0033] 3. Battery management module BMS

[0034] 4. Heating component

[0035] 5. Battery terminal

[0036] 6. Battery positive electrode

[0037] 7. Battery module

[0038] 8. Flame-retardant heat-insulating foam

[0039] 9. Insulating board

[0040] 10. Outer box

[0041] 11. Power generation component Detailed Embodiments

[0042] The following further describes the embodiments of the present disclosure in conjunction with the accompanying drawings and embodiments. The detailed descriptions and drawings of the following embodiments are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms, not limited to the specific embodiments disclosed herein, but including all technical solutions falling within the scope of the claims.

[0043] The present disclosure provides these embodiments to make the present disclosure thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, the components of materials, numerical expressions and values set forth in these embodiments should be construed as merely exemplary, rather than as limitations.

[0044] It should be noted that in the description of the present disclosure, unless otherwise specified, the meaning of "a plurality" is greater than or equal to two; the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present disclosure. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0045] In addition, the "first", "second" and similar terms used in the present disclosure do not denote any order, quantity or importance, but are only used to distinguish different parts. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range. The terms "including" or "comprising" and the like mean that the elements before this term cover the elements listed after this term, and do not exclude the possibility of also covering other elements.

[0046] It should also be noted that in the description of the present disclosure, unless otherwise clearly defined and limited, the terms "mounted", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances. When it is described that a specific device is located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0047] All terms used in this disclosure have the same meanings as those understood by those of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, such as those, should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense, unless specifically defined as such herein.

[0048] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the specification.

[0049] Embodiment

[0050] Figure 1 is a schematic structural diagram of the power supply device disclosed in the embodiments of the present disclosure. Figure 5 is a schematic structural diagram of the power generation component disclosed in the embodiments of the present disclosure. Referring to Figure 1 , Figure 5 , the embodiments of the present disclosure provide a power supply device, which includes: a battery module 7, a heating component 4, a battery management module BMS 3, and a power generation component 11.

[0051] Specifically, the battery management module (abbreviated as BMS) is a key component used to monitor and manage the battery operating state in electric vehicles, energy storage systems, etc. The BMS is mainly responsible for preventing overcharging and over-discharging of the battery, extending the battery life, and monitoring the battery state in real time. The core functions of the BMS include battery operating state monitoring, charge and discharge management, equalization between single cells, and battery protection, etc.

[0052] The basic composition of the BMS can be divided into a main control module and a slave control module. Among them, the main control module is responsible for measuring and controlling system-level parameters such as the total voltage and total current of the battery pack, while the slave control module is responsible for measuring parameters such as the voltage and temperature of single cells.

[0053] Among them, the battery module 7 includes a plurality of battery cells, and the battery cells are used to store and output electric energy.

[0054] In some embodiments, the single cell is a new energy battery, such as a lithium-ion battery (including lithium iron phosphate battery, ternary lithium battery), nickel-metal hydride battery, or sodium-ion battery. Among them, the lithium-ion battery is the most widely used battery type in current new energy vehicles, and has advantages such as high energy density, long cycle life, and light weight. The lithium-ion battery has become the mainstream power source for electric vehicles, is suitable for pure electric vehicles and plug-in hybrid electric vehicles, and can provide a longer cruising range and higher power performance.

[0055] In some embodiments, the power generation component 11 is a photovoltaic power generation device.

[0056] In some embodiments, the battery module 7 is provided with a battery positive electrode 6 and a battery negative electrode 2 for inputting and outputting current to charge and discharge the battery module.

[0057] In some embodiments, the power supply device includes two battery connection terminals 5; the two battery connection terminals are respectively connected to the battery positive electrode 6 and the battery negative electrode 2 of the battery module 7; the battery connection terminals serve as the input connection terminals of the power supply device when the power supply device is charging, and serve as the output connection terminals of the power supply device when the power supply device is discharging.

[0058] The heating component 4 is deployed outside the battery module 7, and the heating component is used to heat the battery module to a preset temperature according to the temperature of the battery module collected by the battery management module BMS 3.

[0059] Figure 2 is a schematic diagram of the distribution of the heating component in the power supply device disclosed in the embodiments of the present disclosure. Refer to Figure 2 、 Figure 1 , Figure 2 The heating component 4 in [relevant reference] has a special outer shape structure, which can uniformly heat each battery cell in the battery module 7, so that the temperature of the battery module 7 can be kept above 0°C during charging and use.

[0060] Figure 2 In [relevant reference], the heating component 4 is arranged Figure 1 around the battery module 7 in [relevant reference], and an insulating board 9 is pasted on the outside to protect the battery module 7 and the heating component 4.

[0061] In some embodiments, the heating component is a heating plate or a heating wire.

[0062] In some embodiments, a temperature sensor is integrated in the battery management module BMS 3. The temperature sensor is used to collect the temperature of each battery cell, and after comprehensively analyzing the collected temperature of each battery cell, the battery module is heated accordingly according to the result of the comprehensive analysis.

[0063] For example, the average value, maximum value, minimum value, or median value corresponding to the temperature of each battery cell collected can be used as the measured temperature of the entire battery module, and then the measured temperature is compared with a preset threshold. When the measured temperature is lower than the preset threshold, the heating component 4 is started to heat to raise the temperature of the battery module.

[0064] In some embodiments, the power supply device includes a temperature control module 1. The temperature control module 1 can communicate with the battery management module BMS 3. The battery management module BMS 3 sends the temperature data of the battery module 7 collected to the temperature control module 1, and the temperature control module 1 heats the heating component 4 according to the received temperature data of the battery module to control the temperature of the battery module.

[0065] Specifically, taking the usage process of an electric tricycle charged and discharged by the power supply device provided in the embodiments of the present disclosure as an example, the heating process of the heating component 4 will be specifically described. Among them, the electric tricycle includes the power supply device provided in the embodiments of the present disclosure and a driving body, and the power supply device is used to provide driving electric energy for the driving body.

[0066] During the charging process of the power supply device of the electric tricycle at sub-zero temperatures, when the power supply device of the tricycle is connected Figure 1 to the battery terminal 5, the current enters the interior of the power supply device.

[0067] When the battery management module BMS 3 collects that the temperature of the battery module 7 is lower than 0°C, the temperature control module 1 starts the heating component 4 to heat the battery module; when the temperature of the battery module reaches 0°C to 5°C, the current enters the battery module 7 to charge the single cells in the battery module; when the temperature of the battery module is higher than 0°C, the current directly enters the battery module 7 to charge the single cells in the battery module.

[0068] When the temperature of the battery module is lower than 0°C, the temperature control module 1 starts the heating module for heating. When the temperature of the battery module is higher than 5°C, the battery management module BMS 3 communicates with the temperature control module to transmit temperature data, and the temperature control module 1 stops the heating component 4 from heating, so as to complete the normal use of the power supply device of the electric tricycle at sub-zero temperatures.

[0069] When the tricycle is working, charging or temporarily parked at sub-zero temperatures, the battery module 7 discharges, and the temperature control module 1 starts to preheat the heating component 4 and performs a constant-temperature cycle of the heating component.

[0070] In some other embodiments, when the temperature of any one of the multiple battery cells is lower than a preset threshold, the heating component 4 can also be started to heat to raise the temperature of the battery module 7.

[0071] In some embodiments, the battery management module BMS 3 and the temperature sensors are independently deployed. The multiple temperature sensors detect and collect the temperatures of the multiple battery cells, and transmit the collected temperature data to the battery management module BMS for further analysis and processing.

[0072] The power generation component is connected to the battery module 7 and the heating component 4, and the power generation component is used to charge the battery module or supply power to heat the heating component according to the temperature of the battery module collected by the battery management module BMS3 and the SOC of the battery module.

[0073] Among them, SOC refers to the state of charge of the battery, which is the ratio of the remaining battery power to its rated capacity, usually expressed as a percentage. The SOC of the battery is used to help users understand the remaining battery power and ensure that the battery remains within a reasonable power range during use, avoiding overcharging or discharging, which may affect the battery performance and lifespan. By regularly monitoring the SOC, effective management and maintenance of the battery can be carried out. For example, when the battery power is low, it can be charged in a timely manner, or unnecessary charging can be avoided when the battery power is sufficient, so as to extend the service life of the battery.

[0074] Specifically, Figure 3 is a schematic diagram of the power generation process of the power generation component disclosed in the embodiment of the present disclosure. Referring to Figure 3 the charging process of the power generation component will be specifically described.

[0075] Among them, the power generation component is a photovoltaic power generation device, such as a solar panel.

[0076] When the temperature of the battery module 7 collected by the battery management module BMS 3 is less than 0°C, the photovoltaic power generation device preferentially heats the battery module, which can maintain a high energy conversion efficiency; when the temperature of the battery module is greater than 0°C and the battery is severely discharged, for example, the battery SOC is less than 20%, the battery module is preferentially charged; when the temperature of the battery module is heated to greater than 25°C and the corresponding battery SOC is charged to reach 100%, the photovoltaic power is abandoned.

[0077] When the temperature of the battery module 7 measured by the battery management module BMS 3 is greater than 0°C, the photovoltaic power generation device preferentially charges the battery module; when the corresponding battery SOC of the battery module reaches 100% and the temperature of the battery module is low, for example, the temperature of the battery module is less than 10°C, the excess photovoltaic power is used to heat the battery module until the temperature of the battery module reaches 25°C, and then enters the photovoltaic power abandonment mode, which can provide an excellent temperature space for battery storage and use, and at the same time reduce the problem of battery low-temperature attenuation.

[0078] It should be noted that the average SOC data of all single cells corresponding to all battery cells in the battery module can be used as the battery SOC corresponding to the battery module. For example, the ratio of the sum of the remaining battery powers of all single cells to the sum of the rated capacities of all single cells is used as the battery SOC corresponding to the battery module.

[0079] In some embodiments, the power supply device includes a flame-retardant heat-insulating foam 8 and an outer box 10. Among them, the outer box 10 adopts a sheet metal baking paint process, which has a simple structure and high space utilization rate.

[0080] Figure 4A and Figure 4B is a schematic diagram of the outer box structure of the power supply device disclosed in the embodiment of the present disclosure. Referring to Figure 4A andFigure 4B The outer box has structural dimensions of length 494 ± 2 mm, width 315 ± 2 mm, and height 278.75 ± 2 mm, which can meet the optimal utilization rate of the internal structural space.

[0081] The flame-retardant and heat-insulating foam 8 is arranged between the battery module 7 and the outer box 10, and is used for flame retardancy and insulation between the battery module and the outer box, as well as heat preservation of the battery module.

[0082] In some embodiments, the power supply device includes an insulating plate 9 made of epoxy resin. The insulating plate 9 is arranged outside the battery module 7 and the heating component 4, and is used for insulation between battery cells, between the battery module and the outer box 10, and between the heating component and the battery module.

[0083] Specifically, Figure 2 is a schematic diagram of the distribution of the heating component 4 in the power supply device disclosed in the embodiment of the present disclosure. Referring to Figure 2 , Figure 2 the heating component 4 is arranged around the battery module 7 in Figure 1 , and an insulating plate 9 is pasted on the outside to protect the battery module 7 and the heating component 4.

[0084] In some embodiments, the battery management module BMS 3 is further used to monitor the status data of the battery module 7. Among them, the status data of the battery module includes: the battery voltage and the battery terminal temperature corresponding to the single battery; and the battery loop current, the battery pack terminal voltage, and the battery system insulation resistance corresponding to the battery module.

[0085] In some embodiments, the power supply device includes an audible and visual alarm; the audible and visual alarm is used to emit corresponding audible and visual warnings when the status data of the battery module 7 collected by the battery management module BMS 3 is abnormal.

[0086] The embodiment of the present disclosure also provides a vehicle, including the power supply device and the driving body, and the power supply device is used to provide driving electric energy for the driving body.

[0087] In some embodiments, the power generation component of the power supply device is arranged on the roof. Specifically, Figure 5 is a schematic diagram of the structure of the power generation component disclosed in the embodiment of the present disclosure. Referring to Figure 5 , the power generation component 11 is a solar panel, and the solar panel can be adjusted according to the size of the tricycle roof. During the day, the solar panel generates electricity to charge the battery module in the power supply device of the vehicle.

[0088] An embodiment of the present disclosure provides a power supply device, which includes: a battery module, a heating component, a battery management module BMS, and a power generation component. The heating component of the power supply device can heat the battery module to a preset temperature according to the temperature of the battery module collected by the battery management module BMS, and the power generation component can charge the battery module or supply power to the heating component according to the temperature of the battery module and the SOC of the battery module collected by the battery management module BMS. On the one hand, it can solve the problem that new energy vehicles are difficult to start at low temperatures, and on the other hand, it can ensure the effect of maintaining the battery at a constant temperature when the new energy electric vehicle is parked for a short time.

[0089] So far, the embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0090] Although some specific embodiments of the present disclosure have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for the purpose of illustration and not for the purpose of limiting the scope of the present disclosure. Those skilled in the art should understand that the above embodiments can be modified or partial technical features can be equivalently replaced without departing from the scope and spirit of the present disclosure. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way.

Claims

1. A power supply device, characterized in that: The power supply device comprises: a battery module (7), a heating component (4), a battery management module BMS (3) and a power generation component (11); Wherein, the battery module (7) comprises a plurality of battery cells, and the battery cells are used to store and output electrical energy; The heating component (4) is disposed outside the battery module (7), and the heating component (4) is used to heat the battery module (7) to a preset temperature according to the temperature of the battery module (7) collected by the battery management module BMS (3); The power generation component (11) is connected to the battery module (7) and the heating component, and is used to charge the battery module (7) or supply power to the heating component for heating according to the temperature of the battery module (7) and the SOC of the battery module (7) collected by the battery management module BMS (3).

2. The power supply device according to claim 1, characterized in that: The power generation component (11) is a photovoltaic power generation device.

3. The power supply device according to claim 1, characterized in that: The power supply device comprises flame-retardant heat-insulating foam (8) and an outer box (10); The flame retardant and heat-insulating foam (8) is arranged between the battery module (7) and the outer box (10) and is used for flame retardancy and insulation between the battery module and the outer box, as well as heat preservation of the battery module.

4. The power supply device according to claim 3, characterized in that: The power supply device comprises an insulating plate (9), which is arranged outside the battery module (7) and the heating component (4) and is used for insulating between the battery cells, between the battery module and the outer box (10), and between the heating component and the battery module.

5. The power supply device according to claim 1, characterized in that: The battery module (7) is provided with a battery positive electrode (6) and a battery negative electrode (2) for inputting and outputting current to charge and discharge the battery module.

6. The power supply device according to claim 1, characterized in that: The power supply device comprises two battery connection terminals (5); The two battery connection terminals (5) are respectively connected to the battery positive electrode (6) and the battery negative electrode (2) of the battery module (7); The battery connection terminal serves as an input connection terminal of the power supply device when the power supply device is charged, and serves as an output connection terminal of the power supply device when the power supply device is discharged.

7. The power supply device according to claim 1, characterized in that: The battery management module BMS (3) is also used to monitor the status data of the battery module (7); The state data of the battery module includes: the battery voltage and battery pole temperature corresponding to the single battery in the battery module; And the battery loop current, battery pack terminal voltage and battery system insulation resistance corresponding to the battery module.

8. The power supply device according to claim 7, characterized in that: The power supply device includes an audible and visual alarm; The sound and light alarm is used to issue a corresponding sound and light warning when the status data of the battery module (7) collected by the battery management module BMS (3) is abnormal.

9. A vehicle, characterized in that: It comprises the power supply device and the driving body as described in any one of claims 1 to 8, wherein the power supply device is used to provide driving power to the driving body.

10. The vehicle according to claim 9, characterized in that The power generation component (11) of the power supply device is arranged on the roof of the vehicle.

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