Battery pack and vehicle

Abstract

The invention discloses a battery pack and a vehicle, and relates to the field of batteries. The battery pack comprises an upper cover, a detection assembly and a heating assembly. The upper cover is a conductor; the detection assembly is used for detecting a water accumulation layer on the upper cover and comprises a conductive part arranged on the upper cover and an insulating layer arranged between the conductive part and the upper cover in a spaced mode. A water containing gap is formed in the insulating layer, the water containing gap is arranged in a penetrating mode in the thickness direction of the insulating layer, and the upper cover and the conductive piece are conducted when the water accumulation layer is contained in the water containing gap; the detection assembly is connected with the upper cover and the conductive part so as to detect working parameters of a circuit between the upper cover and the conductive part. The heating assembly is electrically connected with the detection assembly and used for heating the upper cover according to the detection result of the detection assembly so as to dry the water accumulation layer. According to the battery pack provided by the embodiment of the invention, intelligent detection and efficient treatment of the water accumulation condition can be realized, so that the use reliability of the battery pack is improved.

Description

Technical Field

[0001] The present invention relates to the field of batteries, and in particular to a battery pack and a vehicle. Background Art

[0002] At present, the battery pack design of some new energy vehicles is equipped with a buffer plate on the upper cover to mitigate external impact. However, due to the special-shaped structure of the upper cover, the buffer plate and the upper cover cannot be completely fitted together, resulting in gaps. In rainy days, when the vehicle is driving through water, or when the temperature drops and condensation occurs, these gaps are prone to water accumulation, which may have an adverse effect on the safety and performance of the battery pack.

[0003] Therefore, there is room for improvement in the battery pack. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the first aspect of the present invention aims to provide a battery pack that can realize intelligent detection and efficient processing of water accumulation, thereby improving the reliability of the battery pack.

[0005] A second aspect of the present invention aims to provide a vehicle.

[0006] According to the first aspect of the present invention, the battery pack includes an upper cover, a detection component and a heating component. The upper cover is a conductor; the detection component is used to detect the water layer on the upper cover, and the detection component includes: a conductive part arranged on the upper cover, and an insulating layer separated between the conductive part and the upper cover; a water-containing gap is provided on the insulating layer, and the water-containing gap is arranged through the thickness direction of the insulating layer, and the upper cover and the conductive part are connected when the water layer is contained in the water-containing gap; the detection component is respectively connected to the upper cover and the conductive part to detect the circuit working parameters between the upper cover and the conductive part; the heating component is electrically connected to the detection component, and the heating component is used to heat the upper cover according to the detection result of the detection component to dry the water layer.

[0007] According to the battery pack of the embodiment of the present invention, water accumulation is detected by setting a detection component and utilizing the electrical connection between the conductive member and the upper cover and the insulating layer provided therebetween. By providing a water-containing gap on the insulating layer, when the water-accumulated layer is accommodated in the water-containing gap, the upper cover and the conductive member can be connected, thereby realizing the detection function of the detection component. By providing a heating component and electrically connecting the heating component to the detection component, the heating component can be heated in time when the detection component detects water accumulation, so as to effectively evaporate the accumulated water and improve the reliability of the battery pack.

[0008] According to some embodiments of the battery pack of the present invention, the upper cover is a conductor, and the detection component includes: a conductive part, which is arranged on the upper cover; an insulating layer, which is separated from the conductive part and the upper cover, and a water-containing gap is provided on the insulating layer, and the water-containing gap is arranged to penetrate in the thickness direction of the insulating layer, and the upper cover and the conductive part are conductive when the water accumulation layer is accommodated in the water-containing gap; the detection component is respectively connected to the upper cover and the conductive part to detect the circuit operating parameters between the upper cover and the conductive part.

[0009] In some embodiments, the conductive member is a conductive layer, and the conductive layer covers the insulating layer.

[0010] In some optional embodiments, the conductive layer is aluminum foil or graphite paper.

[0011] According to the battery pack of some embodiments of the present invention, the insulating layer is a double-sided adhesive layer, and the conductive member is adhered to the upper cover through the insulating layer.

[0012] In some optional embodiments, a protrusion is provided on the upper surface of the upper cover, and at least a portion of the water-containing gap is provided along an edge of the protrusion.

[0013] In some optional embodiments, a groove is provided on the upper surface of the upper cover, and at least a portion of the water-containing gap is arranged opposite to the groove.

[0014] In some optional embodiments, the width of the water-containing gap is 1-20 mm.

[0015] The battery pack according to some embodiments of the present invention further includes: a buffer plate provided on the upper cover, and the detection component is located between the buffer plate and the upper cover.

[0016] In some optional embodiments, the detection component is adhered to the buffer plate and the upper cover.

[0017] In the battery pack according to some embodiments of the present invention, the heating assembly includes a heating film.

[0018] According to some embodiments of the present invention, the battery pack further includes: a temperature detection element, which is used to detect the temperature of the battery pack, and the heating component is electrically connected to the temperature detection element to control the operation according to the detection results of the detection component and the temperature detection element.

[0019] The vehicle according to the second embodiment of the present invention comprises the battery pack according to the first embodiment of the present invention.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 An exploded view of a battery pack in some embodiments of the present invention;

[0023] Figure 2 Schematic diagram of the structure of the insulating layer in some embodiments of the present invention;

[0024] Figure 3 A cross-sectional view of an upper cover in some embodiments of the present invention;

[0025] Figure 4 A circuit diagram of a detection circuit in some embodiments of the present invention;

[0026] Figure 5 The following is the working principle of the detection component in some embodiments of the present invention.

[0027] Reference numerals:

[0028] Battery pack 100 , upper cover 10 , protrusion 11 , groove 12 , detection assembly 20 , conductive member 22 , lead end 221 , wire 222 , connector 223 , insulating layer 24 , water-containing gap 241 , buffer plate 40 , tray 50 , external plug-in port 51 . DETAILED DESCRIPTION

[0029] Embodiments of the present invention are described in detail below, examples of which 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 invention, and cannot be understood as limiting the present invention.

[0030] In the description of the present invention, it should be understood that the terms "thickness", "upper", "lower", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention 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 therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "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 a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] It is worth noting that, combined with Figure 1 In the structure of the battery pack 100, the upper cover 10 serves as a top cover, which can provide necessary physical protection for the battery pack 100 to ensure that external objects will not directly touch or damage the internal structure of the battery.

[0033] However, the upper surface of the upper cover 10 of the battery pack 100 has a special-shaped structure, resulting in gaps. In rainy days, wading or condensation conditions, these gaps are prone to water accumulation, which may have an adverse effect on the battery pack 100.

[0034] In order to improve the above problems, refer to Figure 1 - Figure 4 A battery pack 100 according to an embodiment of the first aspect of the present invention is described.

[0035] like Figure 1-Figure 2 As shown, the battery pack 100 according to the embodiment of the present invention includes: an upper cover 10, a detection component 20 and a heating component.

[0036] The detection component 20 is used to detect the water layer on the upper cover 10. The heating component is electrically connected to the detection component 20, and the heating component is used to heat the upper cover 10 according to the detection result of the detection component 20 to dry the water layer.

[0037] The upper cover 10 serves as a top protective layer of the battery pack 100 and plays a role in preventing external objects from directly damaging the internal structure of the battery.

[0038] The detection component 20 is responsible for detecting whether a water accumulation layer is formed on the upper cover 10 .

[0039] In some embodiments, the working mode of the detection component 20 may include manually initiating the detection by a user and / or automatically initiating the detection according to a predetermined period.

[0040] In some cases, the detection component 20 is manually started by the user. This means that when the operator suspects or is sure that there may be water accumulation on the upper cover 10 of the battery pack 100, they can start the detection component 20 by manual operation (such as pressing a button, switching a switch, or triggering through a software interface) to perform an immediate water accumulation test on the upper cover 10. This method gives the operator the power of direct intervention and control, allowing them to respond quickly according to the actual situation to ensure the safe operation of the battery pack 100.

[0041] In other cases, the detection component 20 automatically starts the detection according to a predetermined period. In this way, the detection component 20 automatically starts the detection component 20 according to the preset time interval and performs periodic water accumulation detection on the upper cover 10. This automatic detection mechanism helps to timely discover and deal with potential water accumulation problems, reduce safety hazards caused by human negligence, and also reduce the burden on operators and improve the intelligent level of battery pack 100 management.

[0042] In some cases, the detection component 20 can be manually triggered by the operator as needed, or can automatically perform the detection task at a set time interval. This dual mode setting not only meets the needs of immediate detection, but also ensures regular automatic monitoring, thereby enhancing the reliability and practicality of the battery pack 100.

[0043] In some embodiments, once the detection component 20 identifies the presence of accumulated water, an electrical signal is triggered.

[0044] Specifically, when water accumulation is detected, the detection component 20 generates an electrical signal and transmits it to the battery management system (BMS) or other components. This electrical signal can be used to trigger subsequent actions, such as starting a heating device to evaporate the accumulated water, or sending a warning message to the driver to remind them to pay attention to the status of the battery pack 100.

[0045] In some embodiments, the heating component is electrically connected to the detection component 20. When the detection component 20 sends out or interrupts an electrical signal, the heating component responds and starts a heating function.

[0046] This detection-to-heating process can ensure that the water layer is effectively dried in a short time. Through such a setting, it is possible to avoid performance degradation or safety hazards caused by water accumulation in the battery pack 100.

[0047] In some embodiments, the upper cover 10 is a conductor, and the detection component 20 includes: a conductive member 22 and an insulating layer 24. The conductive member 22 is provided on the upper cover 10, and the insulating layer 24 is separated between the conductive member 22 and the upper cover 10; a water-containing gap 241 is provided on the insulating layer 24, and the water-containing gap 241 is arranged through in the thickness direction of the insulating layer 24, and the upper cover 10 and the conductive member 22 are connected when the water layer is contained in the water-containing gap 241; the detection component 20 is connected to the upper cover 10 and the conductive member 22 respectively to detect the circuit working parameters between the upper cover 10 and the conductive member 22. Here, the detection component 20 connects the upper cover 10 and the conductive member 22 in a detection circuit, and determines whether the conductive member 22 and the upper cover 10 are connected by changing a certain working parameter in the detection circuit. Among them, the setting of the detection circuit and the determination of whether the two electrical components are connected by the change of the working parameters of the circuit can adopt the known schemes in the prior art, and no specific restrictions are made here on the detection circuit and the selection of working parameters. The working parameters may be voltage, resistance, current, etc. The detection circuit itself is not the core solution of the present application. The detection circuit itself is a prior art. The core technical point of the present application is to use the detection circuit to detect whether there is water accumulation on the upper cover 10 of the battery pack 100.

[0048] In the above technical solution, the upper cover 10 acts as a conductor and has good electrical conductivity, which means that when water or other conductive media come into contact with the upper cover 10, it can conduct current.

[0049] The conductive member 22 is disposed on the upper cover 10, but is not in direct contact with the upper cover 10. The conductive member 22 is also made of a conductive material to ensure that a conductive path can be formed with the upper cover 10 under certain conditions (such as when there is accumulated water).

[0050] The insulating layer 24 is located between the conductive member 22 and the upper cover 10. The main function of this insulating layer 24 is to prevent accidental current conduction between the conductive member 22 and the upper cover 10 when there is no water accumulation. The insulating layer 24 needs to have good insulation performance and a certain mechanical strength to ensure that its performance remains stable during long-term use.

[0051] The water-containing gaps 241 are provided on the insulating layer 24. These water-containing gaps 241 are provided through the thickness direction of the insulating layer 24, which means that they can contain a certain amount of accumulated water.

[0052] On the one hand, the water-containing gap 241 can collect and temporarily store moisture that may penetrate into the battery pack 100 , which helps prevent moisture from directly contacting internal electronic components, thereby extending the service life and safety of the battery pack 100 .

[0053] On the other hand, when the water accumulation layer is contained in these water-containing gaps 241 , the accumulated water will act as a bridge, connecting the conductive member 22 and the upper cover 10 , thereby forming a temporary conductive path.

[0054] Optionally, there are one or more water-containing gaps 241 .

[0055] When there is a single water-containing gap 241, it can be located at the center of the insulating layer 24 or set according to the expected water accumulation area. This setting simplifies the structure, reduces the manufacturing cost, and can effectively deal with water accumulation detection in a specific area. A single water-containing gap 241 can ensure that when the water accumulation reaches a certain level, a conductive path can be quickly formed, thereby triggering the response mechanism of the detection component 20.

[0056] When a wider range of water accumulation detection is required, there can be multiple water-containing gaps 241. These water-containing gaps 241 can be evenly distributed on the insulating layer 24 to form a grid, strip or other shape to cover a larger area or a specific water accumulation path. The construction of multiple water-containing gaps 241 provides higher redundancy and reliability. Even if one or several of the water-containing gaps 241 are blocked or fail to detect water accumulation, the other water-containing gaps 241 can still work normally, ensuring the effectiveness of the detection component 20.

[0057] Whether there is one or more water-containing gaps 241, their size and shape can be adjusted according to actual application scenarios, such as designing the water-containing gap 241 into a strip shape, or designing the water-containing gap 241 into a ring shape, or designing the water-containing gap 241 into a polygonal shape or other irregular shapes.

[0058] The conductive member 22 in the detection component 20 is connected to the upper cover 10, and together they form a detection circuit for detecting water accumulation. In a normal state without water accumulation, the insulating layer 24 effectively cuts off the direct electrical contact between the upper cover 10 and the conductive member 22, so that the detection circuit is in a disconnected state, and the detection component 20 judges that there is no water accumulation in the current environment.

[0059] However, once the accumulated water penetrates into the water-containing gap 241 on the insulating layer 24, the accumulated water acts as a bridge, temporarily connecting the conductive member 22 and the upper cover 10, so that the originally disconnected detection circuit can be closed. At this time, the detection component 20 can detect this change and immediately determine that the accumulated water exists.

[0060] Once the detection component 20 confirms the presence of accumulated water, it will quickly trigger the heating component electrically connected thereto. The heating component will then start the heating function to heat up, so as to effectively evaporate the accumulated water, thereby eliminating potential safety hazards.

[0061] As the accumulated water gradually evaporates, the water layer between the conductive member 22 and the upper cover 10 eventually disappears, and the detection circuit returns to its initial disconnected state. This change is accurately captured by the detection component 20 again, indicating that the water accumulation problem has been solved and the battery pack 100 has returned to a normal safe state.

[0062] In summary, the battery pack 100 of the embodiment of the present invention realizes intelligent monitoring and efficient processing of water accumulation through the coordinated work of the detection component 20 and the heating component, thereby providing a strong guarantee for the safe operation of the battery pack 100.

[0063] like Figure 1 As shown, in some embodiments, the conductive member 22 is a conductive layer, and the conductive layer covers the insulating layer 24 .

[0064] Specifically, when the conductive layer covers the insulating layer 24, when accumulated water contacts the conductive layer, the water forms electrical contact with the conductive layer, thereby generating an electrical effect, so that the detection component 20 can accurately capture the presence of accumulated water.

[0065] Furthermore, since the conductive layer is covered on the insulating layer 24, it forms a continuous, large detection area. This means that even if the accumulated water only covers a portion of the conductive layer, the detection mechanism can be triggered. Therefore, the conductive layer covering the insulating layer 24 can improve the detection sensitivity of accumulated water and expand the detection range.

[0066] In some optional embodiments, the conductive layer is aluminum foil or graphite paper.

[0067] This is because aluminum foil has good flexibility and plasticity, can be easily bent and fitted onto surfaces of various shapes, and has a low production cost, which helps reduce manufacturing costs.

[0068] Graphite paper is a thin film material with graphite as the main component. The conductivity of graphite paper is comparable to that of some metals. In addition, the conductivity of graphite paper is stable and can maintain good current transmission capabilities in a variety of environments.

[0069] In summary, when selecting the conductive layer, it is necessary to make adjustments based on specific needs, cost budget and other factors.

[0070] According to some embodiments of the battery pack 100 of the present invention, the insulating layer 24 is a double-sided adhesive layer, and the conductive member 22 is adhered to the upper cover 10 through the insulating layer 24 .

[0071] The double-sided adhesive layer has a certain adhesion, which can ensure that the conductive member 22 is firmly bonded to the upper cover 10. This tight bond helps prevent the conductive member 22 from loosening or falling off due to vibration or impact during the use of the battery pack 100, thereby improving the stability of the detection function of the battery pack 100.

[0072] By using a double-sided adhesive layer as the insulating layer 24, complex processes such as traditional fastener fixing or welding can be omitted, thereby simplifying the assembly process of the battery pack 100 and improving production efficiency. In addition, the pasting operation of the double-sided adhesive layer is relatively simple and does not require special tools or equipment, further reducing production costs.

[0073] In addition, the double-sided adhesive layer has good insulation performance. In daily use, the double-sided adhesive layer can effectively isolate the electrical connection between the conductive member 22 and the upper cover 10, so that the conductive member 22 and the upper cover 10 remain insulated, avoiding improving the detection accuracy of the detection component 20.

[0074] In some optional embodiments, the double-sided adhesive layer may be an adhesive layer of a PET (PET, i.e., polyethylene terephthalate) substrate, or an adhesive layer of a PP (PP, i.e., polypropylene) substrate.

[0075] When the double-sided adhesive layer is a PET-based adhesive layer, PET can provide stable support, so that the double-sided adhesive layer is not easy to deform or fail during long-term use. In addition, the double-sided adhesive layer of the PET-based material usually has good adhesion and peel strength, which can ensure that the conductive member 22 and the upper cover 10 can fit tightly under different temperature and humidity conditions and are not easy to fall off, ensuring the position of the water-containing gap 241 is accurate, and improving the detection accuracy of the detection component 20.

[0076] When the double-sided adhesive layer is a PP-based adhesive layer, PP has good flexibility and processing performance, and can adapt to the complex shape and dynamic stress between the upper cover 10 and the conductive member 22 , thereby ensuring a reliable connection between the conductive member 22 and the upper cover 10 .

[0077] In some optional embodiments, such as Figure 3 As shown, a protrusion 11 is provided on the upper surface of the upper cover 10 , and at least a portion of the water-containing gap 241 is provided along the edge of the protrusion 11 .

[0078] The protrusion 11 provided on the upper cover 10 allows the water-containing gap 241 to be arranged along the edge of the protrusion 11. Therefore, the protrusion 11 provides a clear and definite boundary for the water-containing gap 241, and this boundary ensures that the position of the water-containing gap 241 on the upper cover 10 is accurately defined and controlled, thereby the battery pack 100 can more accurately detect the presence of water accumulation, thereby improving the accuracy and reliability of the battery pack 100 in detecting water accumulation.

[0079] In some optional embodiments, combined with Figure 3 A groove 12 is provided on the upper surface of the upper cover 10 , and at least a portion of the water-containing gap 241 is arranged opposite to the groove 12 .

[0080] The water-containing gap 241 is used to collect and temporarily store moisture that may penetrate into the battery pack 100. In this embodiment, at least a portion of the water-containing gap 241 is configured to be aligned with the groove 12 of the upper cover 10. This means that when there are water droplets or water accumulation on the upper surface of the upper cover 10, the water can more easily flow into the groove 12 through the water-containing gap 241. This arrangement can use a physical structure to guide the accumulated water to flow to the water-containing gap 241, rather than allowing it to freely diffuse to the entire surface of the upper cover 10.

[0081] When the accumulated water enters the water-containing gap 241 and finally contacts the groove 12 of the upper cover 10, the upper cover 10 and the conductive member 22 can form a temporary current path, thereby causing the detection component 20 to send a signal and start the heating component to start heating. As the temperature rises, the accumulated water begins to evaporate and gradually turns into water vapor, thereby effectively reducing the potential threat of accumulated water to the battery pack 100.

[0082] In some optional embodiments, the width of the water-containing gap 241 is 1-20 mm. Specifically, the width of the water-containing gap 241 is set to d, such as Figure 2-Figure 3 As shown, d can be 1mm, 5mm, 10mm, 15mm, 20mm, etc. Here, the width d of the water-containing gap 241 is controlled within the range of 1-20mm. On the one hand, it can ensure that the water-containing gap 241 has a certain capacity to accommodate and buffer the accumulated water that accidentally infiltrates, thereby preventing the accumulated water from directly impacting or penetrating the sensitive components of the battery pack 100, thereby improving the waterproof performance and operational safety of the battery pack 100. On the other hand, by limiting the width of the water-containing gap 241 to no more than 20mm, it can effectively prevent the accumulated water from excessively spreading in the gap. If the gap is too wide, the accumulated water may only adhere to the bottom of the water-containing gap 241 due to lack of sufficient constraints, and it is difficult to contact the upper cover 10. By limiting the width of the water-containing gap 241 to no more than 20mm, it is helpful to control and predict the contact between the accumulated water and the conductive member 22. Within an appropriate width range, the accumulated water can more easily contact the conductive member 22 through the water-containing gap 241, thereby activating the heating component.

[0083] According to the present invention, some Figure 1 In the illustrated embodiment, the battery pack 100 further includes: a buffer plate 40 disposed on the upper cover 10 , and the detection assembly 20 is located between the buffer plate 40 and the upper cover 10 .

[0084] In the present technical solution, the layout of the detection component 20 not only reduces the distance between the detection component 20 and the water-containing gap 241, thereby improving the detection efficiency and accuracy of the detection component 20 for water accumulation; at the same time, the buffer plate 40 also plays a certain protective role, which can effectively reduce and buffer the impact of external forces on the battery pack 100, thereby enhancing the durability and reliability of the battery pack 100.

[0085] In some optional embodiments, the detection component 20 is adhered to the buffer plate 40 and the upper cover 10 .

[0086] First, the bonding connection method is faster than the traditional mechanical fixing method. It does not require cumbersome alignment, fastening and other steps, and only requires the detection component 20 to be installed through an appropriate amount of adhesive or through a glue layer, which can save installation time and reduce errors caused by improper installation.

[0087] Secondly, the bonding method reduces the complexity of the installation process. The bonding method does not require additional fixings and fasteners, thus simplifying the installation process.

[0088] Finally, the bonding method also facilitates the subsequent maintenance and replacement of the detection component 20. When the detection component 20 fails or needs to be upgraded, the detection component 20 can be easily removed from the buffer plate 40 and the upper cover 10 by removing the adhesive using appropriate tools or solvents. Then, the new detection component 20 can be bonded to the predetermined position according to the same steps. This maintenance method is not only simple and quick, but also does not cause any damage to other parts of the battery pack 100.

[0089] According to the battery pack 100 of some embodiments of the present invention, the heating component includes a heating film.

[0090] First, the heating film can reduce the space occupied by the upper cover 10. The heating film is relatively thin and can be directly attached to the preset position without requiring additional installation space, thereby making more effective use of the internal space of the vehicle, thereby improving the control ability of the battery pack 100 over water accumulation without increasing the volume occupied by the battery pack 100.

[0091] Secondly, the heating film also has a relatively fast heating efficiency and response speed. It can respond to instructions quickly, start quickly and reach a predetermined heating temperature, thereby effectively evaporating the accumulated water and improving the reliability of the battery pack 100.

[0092] In some optional embodiments, the heating film is attached to the lower surface of the upper cover 10, or the battery pack 100 includes a liquid cooling plate, and the heating film is attached to the liquid cooling plate.

[0093] When the heating film is attached to the lower surface of the upper cover 10 , the upper cover 10 can be directly heated, so that the accumulated water in the water-containing gap 241 can be discharged as quickly as possible.

[0094] When the heating film is attached to the liquid cooling plate, the liquid cooling plate can be heated up after the heating is started, thereby evaporating the accumulated water.

[0095] According to some embodiments of the present invention, the battery pack 100 further includes: a temperature detection element, which is used to detect the temperature of the battery pack 100. The heating component is electrically connected to the temperature detection element to control the operation according to the detection results of the detection component 20 and the temperature detection element.

[0096] In the above technical solution, the temperature detection element is used to detect the real-time temperature of the battery pack 100. The heating component and the temperature detection element are electrically connected through a circuit to form an intelligent system.

[0097] For example, when the detection component 20 detects a water accumulation environment, at this time, if the temperature detection component detects that the ambient temperature is lower than the preset safety threshold, it is determined that it is suitable to use the heating component. Then, the heating component will be activated and start working to increase the ambient temperature and promote the rapid evaporation of the accumulated water. This process helps to keep the battery pack 100 dry and prevent problems such as short circuits and corrosion caused by moisture.

[0098] Alternatively, when the detection component 20 detects a water accumulation environment, if the temperature detection component determines that the ambient temperature exceeds a preset high temperature threshold, then in order to prevent the heating component from further raising the ambient temperature, the heating component will not be activated. At this time, the detection component 20 can alert the operator to intervene through the battery management system to safely handle the water accumulation problem.

[0099] In some optional embodiments, the detection component 20 is connected to the conductive member 22 and the upper cover 10 respectively through two lead-out terminals 221. Specifically, the conductive member 22 is provided with one lead-out terminal 221, and the upper cover 10 is provided with another lead-out terminal 221. The core module of the detection circuit is located in the battery pack 100 and can be connected to the core module through the two lead-out terminals 221.

[0100] Optionally, the lead-out terminal 221 on the conductive member 22 includes: a wire 222 and a connector 223. The lead-out terminal 221 on the upper cover 10 may include: a wire 222 and a connector 223, or may only include the connector 223. This facilitates plug-in connection.

[0101] Further optionally, the battery pack 100 includes a tray 50, and the upper cover 10 is disposed on the tray 50. The tray 50 is provided with an external plug-in interface 51 of the battery pack 100, and the lead-out terminal 221 on the conductive member 22 can extend into the battery pack 100 through the external plug-in interface 51 to be connected to the core module of the detection circuit.

[0102] According to some embodiments of the present invention, the battery pack 100, wherein the detection circuit involved in the detection component 20 can be seen in Figure 4 :

[0103] 1. Initial state: the Ro port is connected to the conductive member 22, and the tray 50 is grounded.

[0104] In a dry environment, an open circuit is formed between the Ro port and the ground, and the voltage at Ri is obtained by dividing the reference voltage Vref provided by the chip through the voltage drop of the diode D1 and then through the resistor R2.

[0105] 2. When there is water accumulation in the environment, the water will seep in and cause the impedance between the Ro port and the ground to decrease.

[0106] This change affects the voltage divider network composed of R1 and R2, causing the voltage at Ri to change.

[0107] 3. If the voltage change detected at Ri exceeds the preset threshold, this indicates that the humidity has reached a level that requires treatment.

[0108] At this point, the battery management system will send a signal to activate the heating component to drive off the moisture.

[0109] As the heating process proceeds, the moisture gradually evaporates, and the impedance between the Ro port and the ground is restored, causing the voltage value at Ri to return to a normal level.

[0110] 4. Back to normal:

[0111] When the voltage at Ri returns to within the set threshold range, it indicates that the humidity has dropped to a safe level.

[0112] At this point, the battery management system stops the heating process.

[0113] The vehicle according to the second embodiment of the present invention includes the battery pack 100 according to the first embodiment of the present invention.

[0114] It is worth noting that the vehicle can be a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. The vehicle is provided with a battery pack 100, and the battery pack 100 can be arranged at the bottom, head or tail of the vehicle. The battery pack 100 can be used to power the vehicle. For example, the battery pack 100 can be used as an operating power source for the vehicle. In some embodiments of the present application, the battery pack 100 can not only be used as an operating power source for the vehicle, but also as a driving power source for the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0115] By providing a battery pack 100 that can intelligently detect and efficiently handle water accumulation on the upper cover 10, the safety and reliability of the vehicle are improved.

[0116] Reference below Figure 1 - Figure 3 The battery pack 100 according to the embodiment of the present invention is described in detail with a specific embodiment. It is worth noting that the following description is only an exemplary description and is not a specific limitation of the present invention.

[0117] Reference Figure 1 The battery pack 100 includes: an upper cover 10 , a detection component 20 , a heating component and a buffer plate 40 .

[0118] The upper cover 10 is a conductor.

[0119] The detection component 20 is located between the buffer plate 40 and the upper cover 10 and adhered to the buffer plate 40 and the upper cover 10, and is used to detect the water layer on the upper cover 10.

[0120] The detection assembly 20 includes a conductive member 22 and an insulating layer 24 .

[0121] Reference Figure 2 , the conductive member 22 is disposed on the upper cover 10. The insulating layer 24 is separated between the conductive member 22 and the upper cover 10. A water-containing gap 241 is provided on the insulating layer 24, and the water-containing gap 241 is arranged through the thickness direction of the insulating layer 24. When the water layer is contained in the water-containing gap 241, the upper cover 10 and the conductive member 22 are connected. The detection component 20 is connected to the upper cover 10 and the conductive member 22 respectively to detect the circuit working parameters between the upper cover 10 and the conductive member 22.

[0122] The conductive member 22 is a conductive layer, and the conductive layer covers the insulating layer 24 .

[0123] The insulating layer 24 is a double-sided adhesive layer, and the conductive member 22 is adhered to the upper cover 10 through the insulating layer 24 .

[0124] Reference Figure 3 The upper surface of the upper cover 10 is provided with a protrusion 11 and a groove 12, and at least a portion of the water-containing gap 241 is arranged along the edge of the protrusion 11. At least a portion of the water-containing gap 241 is arranged opposite to the groove 12.

[0125] The width of the water-containing gap 241 is d.

[0126] The heating assembly includes a heating film.

[0127] The heating component is electrically connected to the detection component 20 , and is used to heat the upper cover 10 according to the detection result of the detection component 20 to dry the water layer.

[0128] Other components of the battery pack 100 according to the embodiment of the present invention, such as the vehicle and the like, and operations are known to those skilled in the art and will not be described in detail here.

[0129] Refer to the following Figure 5 , describing the working principle of the battery pack 100 according to some embodiments of the present invention.

[0130] The BMS detection component in the battery pack is turned on and the functional integrity of the water detection circuit is checked first. If the water detection circuit does not work properly, the BMS will immediately trigger the abnormal alarm of the water detection circuit to remind the operator to pay attention and take corresponding measures. If the water detection circuit functions normally, the process continues.

[0131] The detection component then checks whether the voltage value at point Ri is within the preset threshold range. If the voltage value is within the normal range, it indicates that the current battery pack state is stable and no immediate intervention is required. Therefore, the BMS will instruct the battery pack module to enter sleep mode and disconnect the heating circuit to save energy. After a preset period of time t, the detection component will be re-awakened for subsequent monitoring and management.

[0132] However, if the voltage value at point Ri exceeds the preset threshold range, it indicates that the battery pack may be in an abnormal state and requires further inspection. At this time, the BMS will turn to detect whether the maximum temperature recorded by the NTC (negative temperature coefficient thermistor) is higher than the cooling start temperature T. If the NTC maximum temperature is higher than T, it means that the current temperature of the battery pack is acceptable and there is no need to start the heating function, so the heating circuit will remain disconnected.

[0133] On the contrary, if the maximum NTC temperature is lower than the cooling start temperature T, it indicates that the battery pack needs to be heated. In this case, the BMS will control the heating circuit to be energized, thereby starting the heating process to evaporate the accumulated water efficiently.

[0134] In summary, the workflow of the battery pack of the embodiment of the present application reflects the intelligence and automation of the battery pack 100 in water accumulation detection and heating management, and can make corresponding judgments and decisions based on real-time conditions to ensure the safety and reliability of the battery pack 100.

[0135] In the description of this specification, the description with reference to the terms "embodiment", "example", etc. 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 invention. In this specification, the schematic representation of the above terms does 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.

[0136] Although embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A battery pack, characterized in that: include: An upper cover, wherein the upper cover is a conductor; A detection component, the detection component is used to detect the water accumulation layer on the upper cover, the detection component comprises: a conductive member arranged on the upper cover, and an insulating layer separated between the conductive member and the upper cover; a water-containing gap is arranged on the insulating layer, the water-containing gap is arranged through the thickness direction of the insulating layer, and the upper cover and the conductive member are connected when the water accumulation layer is accommodated in the water-containing gap; the detection component is connected to the upper cover and the conductive member respectively to detect the circuit working parameters between the upper cover and the conductive member; A heating component is electrically connected to the detection component, and is used to heat the upper cover according to the detection result of the detection component to dry the water layer.

2. The battery pack according to claim 1, characterized in that: The conductive element is a conductive layer, and the conductive layer covers the insulating layer.

3. The battery pack according to claim 2, characterized in that: The conductive layer is aluminum foil or graphite paper.

4. The battery pack according to claim 1, characterized in that: The insulating layer is a double-sided adhesive layer, and the conductive member is adhered to the upper cover through the insulating layer.

5. The battery pack according to claim 1, characterized in that: A protrusion is provided on the upper surface of the upper cover, and at least a portion of the water-containing gap is arranged along an edge of the protrusion.

6. The battery pack according to claim 1, characterized in that: The upper surface of the upper cover is provided with a groove, and at least a portion of the water-containing gap is arranged opposite to the groove.

7. The battery pack according to claim 1, characterized in that: The width of the water-containing gap is 1-20 mm.

8. The battery pack according to any one of claims 1 to 7, characterized in that: Also includes: A buffer plate is arranged on the upper cover, and the detection component is located between the buffer plate and the upper cover.

9. The battery pack according to claim 8, characterized in that: The detection component is adhered to the buffer plate and the upper cover.

10. The battery pack according to any one of claims 1 to 7, characterized in that: The heating assembly includes a heating film.

11. The battery pack according to any one of claims 1 to 7, characterized in that: Also includes: A temperature detection component is used to detect the temperature of the battery pack. The heating component is electrically connected to the temperature detection component to control the operation according to the detection results of the detection component and the temperature detection component.

12. A vehicle, characterized in that: Comprising a battery pack according to any one of claims 1-11.

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