Battery device, new energy vehicle and energy storage device

Abstract

The application provides a battery device, a new energy vehicle and an energy storage device, and relates to the technical field of battery corrosion prevention technology.The battery device comprises a battery box body, the battery box body comprises a box frame and a bottom guard plate, and a first containing cavity is formed between the box frame and the bottom guard plate.A first cold plate is arranged in the first containing cavity, a lower containing cavity is formed between the first cold plate and the bottom guard plate, and a humidity sensor is arranged in the lower containing cavity.The lower containing cavity is formed between the bottom guard plate and the first cold plate of the battery device, and the humidity sensor is arranged in the lower containing cavity.The humidity sensor can detect the humidity in the lower containing cavity.The humidity in the lower containing cavity will increase due to the failure of waterproofing between the bottom guard plate and the box frame caused by some reasons.The humidity sensor can timely detect the increase of humidity in the lower containing cavity, and then timely detect the failure of waterproofing between the bottom guard plate and the box frame, so that timely maintenance is achieved, and the maintenance cost of customers is reduced.

Description

Technical Field

[0001] This invention relates to the technical field of battery corrosion prevention technology, and in particular to a battery device, a new energy vehicle, and an energy storage device. Background Technology

[0002] Currently, during factory testing of power batteries, the airtightness of the battery pack is checked, along with the insulation resistance. Internal insulation testing is also used to detect any waterproofing failures within the pack. However, there is currently no effective testing method to assess the waterproofing effect between the cold plate and the bottom protective plate.

[0003] However, during vehicle operation, uneven road surfaces, the presence of foreign objects, or other special road conditions can cause the bottom of the battery to scrape against the ground, leading to the failure of the underbody protection plate. This, in turn, causes the waterproofing between the underbody protection plate and the battery cold plate to fail. Since there are currently no effective methods to test the waterproofing between the cold plate and the underbody protection plate, the battery cold plate can corrode upon contact with water. Because most batteries use a CTP (Cell-to-Pack) design, once the battery cold plate corrodes, the battery will become unusable, resulting in significant after-sales maintenance costs for customers. In severe cases, it may pose a safety risk to the battery, causing personal injury and property damage to customers. Summary of the Invention

[0004] The purpose of this invention is to provide battery devices, new energy vehicles, and energy storage devices to alleviate the technical problems of waterproof failure of the bottom protective plate of the battery device, corrosion of the cold plate, resulting in safety risks to the power battery and causing personal and property losses to customers.

[0005] The present invention provides a battery device, including a battery housing, the battery housing including a housing frame and a bottom protective plate, the bottom protective plate being connected to the bottom of the housing frame, and a first receiving cavity with an upper opening being formed between the housing frame and the bottom protective plate. A first cold plate is disposed in the first receiving cavity, and a lower receiving cavity is formed between the first cold plate and the bottom protective plate. A humidity sensor is disposed in the lower receiving cavity.

[0006] In an optional embodiment, the first cold plate divides the first receiving cavity into an upper receiving cavity and a lower receiving cavity; A battery management component is provided inside the upper cavity, and the humidity sensor is connected to the battery management component.

[0007] In an optional implementation, a wireless signal receiver is also included, which is used to receive signals from the humidity sensor; the wireless signal receiver is connected to the battery management component via a wiring harness.

[0008] In an optional embodiment, the bottom protective plate is provided with a plurality of reinforcing protrusions, and a mounting cavity is formed between two adjacent reinforcing protrusions; the humidity sensor is disposed in the mounting cavity.

[0009] In an optional embodiment, the bottom guard plate is provided with a lower screw hole in the area corresponding to the box frame, and the box frame is provided with an upper screw hole corresponding to the lower screw hole. Furthermore, a waterproof rubber ring is provided on the side of the bottom protective plate facing the box frame, and a lower through hole corresponding to the lower screw hole is provided on the waterproof rubber ring; The screw is inserted from the side of the bottom protective plate away from the box frame into the lower screw hole, and then into the upper screw hole through the lower hole of the waterproof rubber ring.

[0010] In an optional embodiment, the first cold plate is provided with an upper through hole corresponding to the lower screw hole, and the first cold plate is located between the housing frame and the bottom protective plate.

[0011] In an optional embodiment, the battery management component is disposed in the upper cavity and abuts against the first cold plate.

[0012] In an optional embodiment, at least two spacers are provided in the upper cavity, and the two ends of the spacers are respectively connected to the housing frame; a battery cell is placed between two adjacent spacers.

[0013] In an optional embodiment, the battery housing further includes an upper cover plate disposed on the housing frame, and the upper cover plate, the housing frame, and the bottom protective plate together define the first receiving cavity.

[0014] The battery device provided by this invention forms a lower cavity between the bottom protective plate and the first cold plate. A humidity sensor is installed in the lower cavity to detect the humidity inside. If the waterproofing between the bottom protective plate and the housing frame fails due to various reasons, the humidity inside the lower cavity will increase. The humidity sensor can detect the increase in humidity in the lower cavity in a timely manner, thereby detecting the waterproofing failure between the bottom protective plate and the housing frame in a timely manner, allowing for timely repair, reducing the customer's maintenance costs, reducing the safety risks of the power battery, and avoiding personal and property losses to the customer.

[0015] The present invention provides a new energy vehicle, including the battery device described in any of the foregoing embodiments, wherein the battery device is used to provide electrical energy.

[0016] Compared with the prior art, the new energy vehicle provided by the present invention has the battery device provided by the present invention, and thus has all the beneficial effects of the battery device provided by the present invention.

[0017] The present invention provides an energy storage device, including the battery device described in any of the foregoing embodiments, wherein the battery device is used to store electrical energy.

[0018] Compared with the prior art, the energy storage device provided by the present invention has the battery device provided by the present invention, and thus has all the beneficial effects of the battery device provided by the present invention. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the battery housing frame, first cold plate, and bottom protective plate of the battery device provided in an embodiment of the present invention; Figure 2 A schematic diagram of the battery box frame and bottom protective plate of the battery device provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the bottom protective plate of the battery device provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the first cold plate of the battery device provided in an embodiment of the present invention; Figure 5 This is a structural schematic diagram of the first cold plate of the battery device provided in an embodiment of the present invention from another angle.

[0021] Icons: 100-Box frame; 200-Spare plate; 300-First cold plate; 301-Top perforation; 400-Bottom guard plate; 401-Reinforcing protrusion; 402-Lower screw hole; 500-Waterproof rubber ring; 501-Lower perforation; 600-Wireless signal receiver; 700-Upper cavity; 800-Humidity sensor; 900-Battery management component. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0024] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0025] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0026] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0027] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0028] In this application, "multiple" means two or more (including two).

[0029] Judging from the current market development, the application of rechargeable batteries is becoming increasingly widespread. They can be used not only in energy storage power systems such as hydropower, thermal power, wind power and solar power plants, but also in various electric vehicles such as electric cars, electric motorcycles and electric cars. They can also be used in fields such as robotics, military equipment and aerospace.

[0030] Battery devices are typically composed of multiple battery cells, and the performance of each battery cell directly determines the overall performance of the battery device. Temperature is a key factor affecting the performance, lifespan, and safety of battery cells. Both excessively high and low temperatures can affect the operating state of battery cells. Excessively high temperatures accelerate side reactions, causing rapid capacity decay of battery cells and preventing them from storing and releasing electrical energy properly. High and low temperatures reduce the activity of battery cells, leading to decreased charging and discharging efficiency. Battery cells exposed to extreme temperature environments for extended periods can also accelerate the aging of the internal structure of the battery device, shortening its lifespan.

[0031] A first cold plate 300 is installed inside the battery device to regulate the temperature of the individual battery cells, ensuring they operate at a suitable temperature. The first cold plate 300, through contact with the battery cells, forms a heat transfer pathway. A flow channel is pre-set within the first cold plate 300, serving as a transport channel for the thermal management medium. This channel allows the medium to circulate and exchange heat with the battery cells, thereby regulating their temperature. The core function of the thermal management mechanism is to regulate the temperature of the battery cells through heat exchange. When the battery device is in a low-temperature environment leading to reduced activity, the thermal management medium acts as a heat transfer carrier, transferring heat generated by external heat sources to the battery cells, thus raising their temperature. Conversely, when the battery cells generate significant heat during charging and discharging, causing their temperature to rise, the thermal management medium absorbs and carries away the heat released by the battery cells, thereby cooling them. The thermal management medium can be water, an aqueous ethylene glycol solution, heat transfer oil, or a refrigerant.

[0032] That is, the first cold plate 300 can both cool down and heat up the battery cells. It can heat up or cool down according to the actual working needs of the battery cells, thereby ensuring that the battery device can be in a suitable operating temperature range.

[0033] When the bottom protective plate 400 of the battery device is damaged, the first cold plate 300 is corroded, which seriously affects the normal operation of the battery cells.

[0034] Example Reference Figures 1-5The present invention provides a battery device, including a battery housing, the battery housing including a housing frame 100 and a bottom protective plate 400, the bottom protective plate 400 being connected to the bottom of the housing frame 100, and a first receiving cavity with an upper opening being formed between the housing frame 100 and the bottom protective plate 400. A first cold plate 300 is disposed in the first receiving cavity, and a lower receiving cavity is formed between the first cold plate 300 and the bottom protective plate 400. A humidity sensor 800 is disposed in the lower receiving cavity.

[0035] The battery device can be used in, but is not limited to, electrical devices such as automobiles, ships, or aircraft, and can also be used in energy storage devices. The battery housing frame 100 of this battery device has a bottom protective plate 400 at its lower end, located at the very bottom of the battery device. When the battery device is used in automobiles, uneven road surfaces, the presence of foreign objects, or other special road conditions can cause the bottom protective plate 400 to rub against surfaces, resulting in its failure to provide protection. This can lead to waterproofing failure between the bottom protective plate 400 and the first cold plate 300 of the power battery. If this is not detected and addressed in time, the first cold plate 300 of the power battery will corrode upon contact with water. Since most batteries use a CTP (Cell-to-Pack) design, once the first cold plate 300 of the power battery corrodes, the power battery will become unusable, resulting in significant after-sales maintenance costs for customers. In severe cases, it may pose a safety risk to the power battery, causing personal injury and property damage to customers.

[0036] A bottom protective plate 400 is provided at the lower end of the housing frame 100. The bottom protective plate 400 seals the lower end of the housing frame 100 and forms a first receiving cavity inside the housing frame 100. The first receiving cavity is used to place the battery cell. A first cold plate 300 is provided inside the first receiving cavity. The first cold plate 300 is used to regulate the temperature of the battery cell so that the battery cell is at a suitable temperature. The first receiving cavity can be of various shapes, such as a cylinder, a cuboid, etc.

[0037] When the bottom protective plate 400 is damaged, water can enter the lower cavity through the bottom protective plate 400. After the water enters the lower cavity, the humidity of the lower cavity changes. The humidity sensor 800 is used to detect the humidity in the lower cavity. The humidity sensor 800 can transmit the humidity of the lower cavity in a timely manner, thereby determining whether the bottom protective plate 400 is damaged and whether the seal between the bottom protective plate 400 and the box frame 100 has failed.

[0038] In an optional embodiment, the first cold plate 300 divides the first receiving cavity into an upper receiving cavity 700 and the lower receiving cavity; A battery management component 900 is provided inside the upper cavity 700, and the humidity sensor 800 is connected to the battery management component 900.

[0039] In some embodiments, a first cold plate 300 is disposed within a first cavity, dividing the first cavity into an upper cavity 700 and a lower cavity, wherein the volume of the upper cavity 700 is larger than that of the lower cavity; the upper cavity 700 is used to assemble battery cells, and the lower cavity is smaller in volume than the upper cavity 700. The humidity sensor 800 is disposed within the lower cavity; during use, the lower cavity is located below the upper cavity 700, meaning the horizontal position of the upper cavity 700 is generally higher than that of the lower cavity. If a leak occurs at the connection between the housing frame 100 and the bottom protective plate 400, or if the bottom protective plate 400 is damaged, water can easily enter the lower cavity, causing a change in the humidity within the lower cavity. The humidity sensor 800 is used to monitor the humidity within the lower cavity.

[0040] The battery management component 900 determines whether water has entered the lower cavity, i.e. whether the bottom protective plate 400 is damaged, based on the signal sent by the humidity sensor 800. If the humidity in the lower cavity is abnormal, the battery management component 900 reports a fault. This allows for timely maintenance of the battery device, preventing corrosion of the first cold plate 300 and reducing the maintenance cost of the battery device.

[0041] Reference Figure 1 and Figure 2 In an optional embodiment, a wireless signal receiver 600 is also included, which is used to receive signals from the humidity sensor 800; the wireless signal receiver 600 is connected to the battery management component 900 via a wiring harness.

[0042] To prevent water from entering the upper cavity 700 after the bottom protective plate 400 is damaged, a wireless signal receiver 600 is installed inside the housing frame 100. The wireless signal receiver 600 is located at the upper end of the first cold plate 300, and the humidity sensor 800 is located at the lower end of the first cold plate 300. Wireless transmission is achieved between the humidity sensor 800 and the wireless signal receiver 600, so that signal transmission can be achieved without damaging the first cold plate 300. This avoids the problem of increased water leakage risk to the first cold plate 300 due to the wiring harness connecting the humidity sensor 800 and the battery management component 900 passing through the first cold plate 300.

[0043] The humidity sensor 800 has a built-in wireless communication module, which eliminates the need for wiring and extends battery life. The humidity sensor 800 is located between the bottom protective plate 400 and the first cold plate 300. Since the humidity sensor 800 can transmit wirelessly, there is no need to set up a channel on the first cold plate 300, which helps to ensure the sealing of the first cold plate 300 and reduces the risk of water leakage.

[0044] In an optional embodiment, the bottom protective plate 400 is provided with a plurality of reinforcing protrusions 401, and an installation cavity is formed between two adjacent reinforcing protrusions 401; the humidity sensor 800 is disposed in the installation cavity.

[0045] In some embodiments, the gap between the bottom protective plate 400 and the first cold plate 300 is small. In order to enable the humidity sensor 800 to be assembled in the lower cavity, a plurality of reinforcing protrusions 401 are provided on the bottom protective plate 400. The reinforcing protrusions 401 can increase the strength of the bottom protective plate 400, and an installation cavity is formed between adjacent reinforcing protrusions 401. The humidity sensor 800 is installed in the installation cavity. This effectively reduces the impact of installing the humidity sensor 800 on the first cold plate 300 and the bottom protective plate 400 and other structures.

[0046] The humidity sensor 800 is installed in the mounting cavity formed between adjacent reinforcing protrusions 401. This effectively reduces the installation height of the humidity sensor 800, meaning that the humidity sensor 800 is in a lower position, where the humidity is higher, making it easier to detect humidity abnormalities.

[0047] Reference Figure 2 and Figure 3 In an optional embodiment, the bottom guard plate 400 is provided with a lower screw hole 402 in the area corresponding to the box frame 100, and the box frame 100 is provided with an upper screw hole corresponding to the lower screw hole 402. Furthermore, a waterproof rubber ring 500 is provided on the side of the bottom protective plate 400 facing the box frame 100, and a lower through hole 501 corresponding to the lower screw hole 402 is provided on the waterproof rubber ring 500. The screw is inserted from the side of the bottom protective plate 400 away from the box frame 100 into the lower screw hole 402, the lower through hole 501 of the waterproof rubber ring 500, and then into the upper screw hole.

[0048] In an optional embodiment, the first cold plate 300 is provided with an upper through hole 301 corresponding to the lower screw hole 402, and the first cold plate 300 is located between the box frame 100 and the bottom protective plate 400.

[0049] In some embodiments, a plurality of lower screw holes 402 are provided on the bottom protective plate 400, and an upper screw hole is provided on the housing frame 100, with the lower screw holes 402 corresponding to the upper screw holes one by one; a waterproof rubber ring 500 is provided on the bottom protective plate 400, and a lower through hole 501 corresponding to the lower screw holes 402 is provided on the waterproof rubber ring 500; a screw is inserted into the upper screw hole after passing through the lower screw hole 402 and the lower through hole 501 in sequence; the bottom protective plate 400 and the housing frame 100 are connected by the screw; the screw can be screwed into the upper screw hole or connected to the nut provided on the housing frame 100, thus connecting the screw to the housing frame 100, thereby connecting the bottom protective plate 400 and the housing frame 100.

[0050] The first cold plate 300 can be provided with a clearance hole or an upper through hole 301. Taking the first cold plate 300 with an upper through hole 301 as an example, the first cold plate 300 is provided with an upper through hole 301 that corresponds one-to-one with the upper screw hole. The screw can pass through the lower screw hole 402, the lower through hole 501, and the upper through hole 301 in sequence and then be inserted into the upper screw hole to realize the connection between the screw and the housing frame 100.

[0051] In an optional embodiment, the battery management component 900 is disposed in the upper cavity 700 and abuts against the first cold plate 300.

[0052] Reference Figure 1 and Figure 2 In an optional embodiment, at least two spacers 200 are provided in the upper cavity 700, and the two ends of the spacers 200 are respectively connected to the housing frame 100; a battery cell is placed between two adjacent spacers 200.

[0053] One or more battery cells are disposed within the upper cavity 700. The battery cells can be connected in series, in parallel, or in a mixed configuration. A mixed configuration means that multiple battery cells are connected in both series and parallel configurations. The assembly of multiple battery cells is placed within the upper cavity 700. The battery cells can be secondary batteries, primary batteries, lithium-sulfur batteries, sodium-ion batteries, etc. The battery cells can be cylindrical, rectangular, or other shapes.

[0054] Multiple spacers 200 are provided in the upper cavity 700, and battery cells are arranged between two adjacent spacers 200. The spacers 200 arrange the multiple battery cells neatly along a preset direction.

[0055] In an optional embodiment, the battery housing further includes an upper cover plate disposed on the housing frame 100, and the upper cover plate, the housing frame 100, and the bottom protective plate 400 together define the first receiving cavity.

[0056] The top cover plate, the frame 100, and the first cold plate 300 of the battery box form a sealed space for placing the battery cells; the bottom protective plate 400 and the waterproof rubber ring 500 form a bottom protective layer and simultaneously form a bottom protective sealed space, which plays a role in corrosion protection and structural protection of the first cold plate 300.

[0057] A humidity sensor 800 located above the bottom guard plate 400 detects humidity changes in the lower cavity and transmits the humidity parameters to a wireless signal receiver 600 via a wireless signal. The wireless signal receiver 600 receives the signal and determines whether the humidity value is within the normal range. If the humidity is within the normal range, it sends a corresponding flag bit to the battery management component 900 through the power supply and communication harness, and the battery management component 900 does not need to report a fault. When the bottom guard plate 400 or the waterproof gasket 500 fails, moisture enters the lower cavity through the gaps in the bottom guard plate 400 or the waterproof gasket 500, causing the humidity in the lower cavity to rise. The wireless signal receiver 600 receives the humidity value sent by the humidity sensor 800. When the humidity exceeds the normal range, it sends a corresponding flag bit to the battery management component 900, and the battery management component 900 sends a fault signal to the vehicle's instrument panel. The vehicle's instrument panel alerts the customer that the bottom guard plate 400 of the battery unit has failed, realizing a bottom protection failure alarm for the battery unit, thereby reducing corrosion and damage to the first cold plate 300 caused by protection failure.

[0058] The thermal management system of the battery management component 900 includes the first cold plate 300, which is responsible for heat regulation and ensures the temperature stability of the battery device through heat exchange with the individual battery cells.

[0059] The battery device provided by this invention forms a lower cavity between the bottom protective plate 400 and the first cold plate 300. A humidity sensor 800 is installed in the lower cavity, which can detect the humidity in the lower cavity. If the waterproofing between the bottom protective plate 400 and the housing frame 100 fails due to some reasons, the humidity in the lower cavity will increase. The humidity sensor 800 can detect the increase in humidity in the lower cavity in time, thereby detecting the waterproofing failure between the bottom protective plate 400 and the housing frame 100 in time, allowing for timely repair, reducing the customer's maintenance costs, reducing the safety risks of the power battery, and avoiding personal and property losses to the customer.

[0060] During factory testing of power batteries, the airtightness of the battery pack and the insulation resistance of the power batteries are checked. During battery use, internal insulation testing can also detect waterproofing failures within the pack, allowing for problem identification and risk mitigation. However, the seal between the first cold plate 300 and the bottom protective plate 400 cannot be tested during factory testing, nor can the waterproofing effect between these two plates be effectively detected during battery use. If leakage occurs during use, there is no continuous monitoring, leading to corrosion of the first cold plate 300 and ultimately rendering the entire battery pack unusable, requiring battery replacement and incurring high after-sales costs.

[0061] The battery device is equipped with a humidity sensor 800, which can detect the humidity between the first cold plate 300 and the bottom protective plate 400, thereby promptly detecting whether the bottom protective plate 400 is damaged, preventing the first cold plate 300 from being corroded, and reducing the maintenance and repair costs of the battery device.

[0062] The present invention provides a new energy vehicle, including the battery device described in any of the foregoing embodiments, wherein the battery device is used to provide electrical energy.

[0063] Compared with the prior art, the new energy vehicle provided by the present invention has the battery device provided by the present invention, and thus has all the beneficial effects of the battery device provided by the present invention.

[0064] The new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle, or a range-extended electric vehicle, etc.; the new energy vehicle is equipped with a battery device inside, which is used for power supply; the battery device can be located at the bottom of the new energy vehicle, or at the front or rear of the new energy vehicle, etc.; the battery device can be used as the operating power source for the new energy vehicle, and the new energy vehicle can also include a controller, a motor, and instrument lights. The controller is used to control the battery device to supply power to the motor, for example, for the power needs of starting, navigation, and driving the new energy vehicle.

[0065] This battery device can be used as a control power source for new energy vehicles, and can also serve as a driving power source for new energy vehicles, replacing or partially replacing fuel or natural gas as the power source for new energy vehicles.

[0066] The present invention provides an energy storage device, including the battery device described in any of the foregoing embodiments, wherein the battery device is used to store electrical energy.

[0067] Compared with the prior art, the energy storage device provided by the present invention has the battery device provided by the present invention, and thus has all the beneficial effects of the battery device provided by the present invention.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A battery device, characterized in that, The battery housing includes a housing frame (100) and a bottom protective plate (400), the bottom protective plate (400) being connected to the bottom of the housing frame (100), and a first receiving cavity with an upper opening being formed between the housing frame (100) and the bottom protective plate (400). A first cold plate (300) is provided in the first receiving cavity, and a lower cavity is formed between the first cold plate (300) and the bottom protective plate (400). A humidity sensor (800) is provided in the lower cavity.

2. The battery device according to claim 1, characterized in that, The first cold plate (300) divides the first receiving cavity into an upper receiving cavity (700) and a lower receiving cavity; A battery management component (900) is provided in the upper cavity (700), and the humidity sensor (800) is connected to the battery management component (900).

3. The battery device according to claim 2, characterized in that, It also includes a wireless signal receiver (600) for receiving signals from the humidity sensor (800); the wireless signal receiver (600) is connected to the battery management component (900) via a wiring harness.

4. The battery device according to claim 1, characterized in that, The bottom protective plate (400) is provided with a plurality of reinforcing protrusions (401), and an installation cavity is formed between two adjacent reinforcing protrusions (401); the humidity sensor (800) is disposed in the installation cavity.

5. The battery device according to claim 1, characterized in that, The bottom guard plate (400) is provided with a lower screw hole (402) in the area corresponding to the box frame (100), and the box frame (100) is provided with an upper screw hole corresponding to the lower screw hole (402); A waterproof rubber ring (500) is provided on the side of the bottom protective plate (400) facing the box frame (100), and a lower through hole (501) corresponding to the lower screw hole (402) is provided on the waterproof rubber ring (500). The screw is inserted from the side of the bottom guard plate (400) away from the box frame (100) into the lower screw hole (402), and then into the upper screw hole through the lower through hole (501) of the waterproof rubber ring (500).

6. The battery device according to claim 5, characterized in that, The first cold plate (300) is provided with an upper through hole (301) corresponding to the lower screw hole (402), and the first cold plate (300) is located between the box frame (100) and the bottom guard plate (400).

7. The battery device according to claim 2, characterized in that, At least two spacers (200) are provided in the upper cavity (700), and the two ends of the spacers (200) are respectively connected to the housing frame (100); a battery cell is placed between two adjacent spacers (200).

8. The battery device according to claim 2, characterized in that, The battery housing also includes an upper cover plate, which is disposed on the housing frame (100), and the upper cover plate, the housing frame (100), and the bottom protective plate (400) together define the first receiving cavity.

9. A new energy vehicle, characterized in that, Includes the battery device according to any one of claims 1-8, the battery device being used to provide electrical energy.

10. An energy storage device, characterized in that, Includes the battery device according to any one of claims 1-8, the battery device being used for storing electrical energy.

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