Battery cell protection assembly for battery cell module and battery pack

Abstract

The invention relates to the technical field of moisture prevention of power batteries, and discloses a battery cell protection assembly for a battery cell module and a battery pack. The cell protection assembly comprises a protection cover, a support frame, an acquisition module, a conductive part, a heat conduction part and a moisture-proof part; the protective cover and the support frame are encircled to form an accommodating space; the collection module, the electric conduction part, the heat conduction part and the moisture-proof part are all arranged in the containing space, a first groove used for containing the moisture-proof part is formed in the supporting frame, a flow guide groove used for collecting condensation is formed in the outer top face of the protective cover, the edge of the protective cover is bent downwards to form a flow guide step, and a notch is formed in the protective cover; the diversion trench is communicated with the drainage step through the gap, so that the collected condensation is guided to the bottom of the peripheral side of the battery cell module, and the condensation is prevented from dripping to a power connection area of the battery cell module; sealing and moisture prevention can be carried out without a full-glue-pouring mode, so that the battery cell module can be repaired or maintained at any time or at regular intervals, and the repair or maintenance cost is greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of power battery moisture protection technology, and in particular to a cell protection component and battery pack for a cell module. Background Technology

[0002] Battery packs play a crucial role in new energy vehicles. A battery pack is a high-voltage, high-capacity battery assembly composed of many individual battery cells. Depending on different requirements, battery packs can be constructed using varying numbers, chemical compositions, and sizes of individual battery cells. For example, battery packs can be classified based on the number of layers: single-layer, double-layer, and multi-layer.

[0003] In existing technologies, double-layer or multi-layer battery packs are usually sealed using a full potting method to prevent internal electrical short circuits caused by condensation due to temperature differences. However, full potting of battery packs results in high subsequent maintenance costs or makes them unrepairable. Summary of the Invention

[0004] The main objective of this invention is to provide a cell protection component and battery pack for a cell module, aiming to solve the technical problem of high maintenance costs caused by condensation prevention in existing battery packs.

[0005] To achieve the above objectives, the present invention provides a cell protection component for a cell module, the cell protection component comprising: Protective cover, support frame, data acquisition module, conductive components, heat-conducting components, and moisture-proof components; The outer top surface of the protective cover is provided with a guide groove for collecting condensation. The edge of the protective cover is bent downward to form a guide step, and a notch is provided on the protective cover. The guide groove communicates with the guide step through the notch to guide the collected condensation to the bottom of the outer periphery of the battery cell module, so as to prevent the condensation from dripping onto the power connection area of ​​the battery cell module. The protective cover and the support frame together form an accommodating space; The acquisition module, the conductive component, the heat-conducting component, and the moisture-proof component are all disposed within the accommodating space, and the support frame is provided with a first groove for accommodating the moisture-proof component.

[0006] Optionally, in one embodiment, the drainage step has an "L" shaped structure; and / or; The cross-section of the guide channel is any one of the following: "V" shaped structure, trapezoidal structure, W shaped structure, or rectangle.

[0007] Optionally, in one embodiment, one side of the support frame is disposed on the battery cell module, the first groove is located on the other side of the support frame, at least one conductive element is provided, the conductive element is disposed on the support frame and located on one or both sides of the moisture-proof element, the acquisition module is disposed on the moisture-proof element, and the two ends of the conductive element are respectively connected to the acquisition module and the power receiving part of the battery cell module.

[0008] Optionally, in one embodiment, the conductive element is provided in multiple ways, the battery cell module has multiple contact parts in its contact area, the support frame has multiple second grooves for accommodating the conductive element, and each second groove has a clearance opening corresponding to each contact part, the contact part protrudes from the clearance opening and is electrically connected to the conductive element.

[0009] Optionally, in one embodiment, multiple heat-conducting elements are provided corresponding to the conductive elements, and one side of each heat-conducting element is disposed on each conductive element, the inner top surface of the protective cover is attached to the other side of each heat-conducting element, and each heat-conducting element is located in the second groove.

[0010] Optionally, in one embodiment, the battery cell module is provided with multiple vent valves, and the first groove is provided with multiple vent channels corresponding to the positions of the multiple vent valves. The moisture-proof component is provided with multiple vent holes corresponding to the multiple vent channels. The vent valves, the vent channels and the vent holes are connected in sequence to form a venting path.

[0011] Optionally, in one embodiment, the cell protection assembly further includes a temperature sensor, one end of which is disposed on the acquisition module and the other end is attached to the cell module.

[0012] Optionally, in one embodiment, the inner top surface of the protective cover has a protrusion corresponding to the first groove, the protrusion engaging with the edge of the first groove to guide the protective cover to self-position during assembly.

[0013] Optionally, in one embodiment, a hydrophobic coating is provided inside the flow channel.

[0014] The present invention also provides a battery pack, a cell module, and a cell protection component as described in any of the preceding claims, wherein the cell protection component is disposed on the cell module.

[0015] In the technical solution provided by this invention, the acquisition module, conductive component, heat-conducting component, and moisture-proof component are arranged within a receiving space formed by the snap-fitting of a protective cover and a support frame. A first groove for accommodating the moisture-proof component is provided on the support frame, allowing the moisture-proof component to absorb steam within the receiving space and prevent condensation into water droplets. A guide channel for collecting condensation is provided on the outer top surface of the protective cover, and the edge of the protective cover is bent downwards to form a drainage step. A notch is opened on the protective cover, allowing the guide channel to connect with the drainage step through the notch. This allows the condensation collected by the guide channel to flow through the notch to the drainage step, which guides the condensation to the bottom of the outer periphery of the battery cell module, preventing condensation from dripping onto the contact area of ​​the battery cell module and causing a short circuit. Because this invention achieves a double moisture-proof effect by providing a condensation drainage path on the outer top surface of the protective cover and by placing a moisture-proof component within the receiving space, it eliminates the need for full potting for sealing and moisture protection. This allows for timely or periodic maintenance or repair of the battery cell module, significantly reducing maintenance or repair costs. Attached Figure Description

[0016] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0017] Figure 1 This is a schematic diagram of a battery cell protection component disposed on a battery cell module according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a battery cell module according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the exploded structure of a battery cell protection component and a battery cell module according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the exploded structure of a battery cell protection assembly according to an embodiment of the present invention; Figure 5 This is a top view of a battery cell protection assembly according to an embodiment of the present invention; Figure 6 This is a partial cross-sectional view of a V-shaped flow channel according to an embodiment of the present invention; Figure 7 This is a partial cross-sectional view of a trapezoidal flow channel according to an embodiment of the present invention; Figure 8 This is a partial cross-sectional view of a W-shaped flow channel according to an embodiment of the present invention; Figure 9 This is a partial cross-sectional schematic diagram of a battery cell protection component disposed on a battery cell module according to an embodiment of the present invention. Figure 10 for Figure 9A magnified view of a section at point A.

[0018] Among them, 200 is the battery cell module; 201 is the power receiving part; 202 is the battery cell body; 203 is the positive terminal; 204 is the negative terminal; 205 is the vent valve; 100 is the battery cell protection assembly; 10 is the protective cover; 101 is the flow guide groove; 102 is the notch; 103 is the flow guide step; 104 is the protrusion; 30 is the support frame; 301 is the first groove; 302 is the second groove; 303 is the clearance opening; 304 is the vent channel; 40 is the acquisition module; and 50 is the conductive component. 60. Heat-conducting component; 70. Moisture-proof component; 701. Vent hole; 80. Temperature sensor. Detailed Implementation

[0019] To facilitate understanding of the present invention, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," "inner," "outer," and similar expressions used in this specification are for illustrative purposes only. In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or implying the number of indicated technical features. Thus, unless otherwise stated, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; "multiple" means two or more. The term "comprising" and any variations thereof mean non-exclusive inclusion, where one or more other features, integers, steps, operations, units, components, and / or combinations thereof may be present or added.

[0020] Furthermore, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections via an intermediate medium, or internal communication between two components. All technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0021] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0022] Please refer to Figures 1 to 3 An embodiment of the present invention discloses a battery pack.

[0023] In one embodiment, such as Figures 1 to 3 As shown, the battery pack integrates a thermal management system and a battery management system. The battery management system, as the core control unit, communicates bidirectionally with the thermal management system: on the one hand, it collects real-time thermal state data such as the battery pack's temperature; on the other hand, it sends commands to the thermal management system according to a preset thermal management strategy to achieve precise control of the battery's operating temperature. The battery pack also includes cell modules 200 and cell protection components 100. The cell protection components 100 are mounted on the cell modules 200. Specifically, the cell module 200 consists of multiple individual cell bodies 202 arranged in series and parallel to form a compact cell group or a battery pack composed of multiple cell modules 200. Each cell body 202 has a contact portion 201 on its top surface, including a positive terminal 203 and a negative terminal 204. Each cell body 202 also has a vent valve 205 located between the positive terminal 203 and the negative terminal 204. The cell protection assembly 100 is provided with multiple conductive elements 50, each conductive element 50 connecting two adjacent cells with different polarities (one positive terminal 203 and one negative terminal 204), so that the cell protection assembly 100 can achieve electrical connection with the cell module 200.

[0024] like Figures 3 to 10As shown, this embodiment of the invention also discloses a battery cell protection component 100. The battery cell protection component 100 includes a protective cover 10, a support frame 30, a data acquisition module 40, a conductive component 50, a heat-conducting component 60, and a moisture-proof component 70. One side of the support frame 30 is disposed on the battery cell module 200, and the protective cover 10 covers the battery cell module 200, so that the protective cover 10 and the support frame 30 form an accommodating space. During the charging and discharging process of the battery cell body 202, steam is generated due to high temperature. The steam is discharged into the accommodating space through the vent valve 205 of the battery cell body 202. The temperature inside the accommodating space is low, which causes the steam to condense. Therefore, the support frame 30... On the other side, a first groove 301 is provided, and the moisture-proof component 70 is placed in the first groove 301 so that the moisture-proof component 70 can absorb the steam in the containment space and prevent the steam from condensing into water droplets when it cools. The conductive component 50 is set on the support frame 30 and is located on one or both sides of the moisture-proof component 70. The heat-conducting component 60 is set on the conductive component 50. The acquisition module 40 is set on the moisture-proof component 70 and is electrically connected to one end of the conductive component 50. The other end of the conductive component 50 is electrically connected to the power receiving part 201 of the cell module 200. The position layout of the moisture-proof component 70 can increase the amount of material used in the moisture-proof component 70 inside the battery pack, thereby improving the anti-condensation effect.

[0025] The protective cover 10 has a guide channel 101 on its outer top surface for collecting condensation, such as... Figure 5 As shown, the cross-section of the guide channel 101 can be rectangular. The edge of the protective cover 10 is bent downward to form a guide step 103. A notch 102 is opened on the protective cover 10. The guide channel 101 is connected to the guide step 103 through the notch 102, so that the condensation collected by the guide channel 101 can flow to the guide step 103 through the notch 102. The guide step 103 has an "L" shaped structure, which facilitates the guidance of condensation. The guide step 103 protrudes from the periphery of the cell module 200, so that the cell protection component 100 can guide the collected condensation to the bottom of the outer periphery of the cell module 200, preventing condensation from dripping onto the power connection area of ​​the cell module 200. At the same time, by setting a moisture-proof component 70 in the accommodating space of the cell protection component 100, the moisture-proof component 70 can absorb the steam in the accommodating space and prevent the steam from condensing into water droplets when it encounters cold. It eliminates the need for full potting for sealing and moisture protection, allowing for timely or periodic maintenance or repair of the battery pack, significantly reducing maintenance or repair costs.

[0026] Specifically, the moisture-proof component 70 is made of a composite material comprising a polymer matrix and a functional moisture-absorbing filler. By selecting different polymer matrices and functional moisture-absorbing fillers, the mechanical properties, temperature resistance, cost, and moisture absorption efficiency of the moisture-proof component 70 can be flexibly adjusted. When the polymer matrix is ​​silicone rubber, the functional moisture-absorbing filler is silica gel powder; when the polymer matrix is ​​fluororubber, the functional moisture-absorbing filler is molecular sieve powder; when the polymer matrix is ​​epoxy resin, the functional moisture-absorbing filler is a mixture of silica gel powder and activated alumina powder. Of course, the moisture-proof component 70 can also be a desiccant, and the desiccant material can be any one of silica gel, molecular sieve, montmorillonite clay, calcium chloride, or calcium oxide.

[0027] In one embodiment, to prevent water accumulation and accelerate drainage, the guide channel 101 has a preferred cross-sectional shape of "V", trapezoidal or W, such as... Figure 6 As shown, the cross-section of the guide channel 101 is a "V" shape. This "V" shape makes the two side walls of the guide channel 101 form a natural funnel shape, which can effectively collect the tiny condensed water droplets dispersed on the outer top surface of the protective cover 10 to the bottom of the guide channel 101, and flow along the inclined bottom of the guide channel 101 towards the notch 102. Its pointed corner design is conducive to the rapid collection of water droplets, reducing the residence time and residue of water droplets in the channel, thereby significantly improving drainage efficiency. Of course, in order to increase the condensation collection area and improve the collection efficiency, multiple "V" shaped guide channels 101 can be set side by side, thus arranging them into a "W" shape structure (such as...). Figure 7 As shown), the tail ends of multiple “V”-shaped guide channels 101 are interconnected and the head ends are interconnected, so that the collected condensate can flow to the guide step 103 through the gap 102.

[0028] Reference Figure 8 As another preferred embodiment, the cross-section of the guide channel 101 can also be designed as a trapezoidal structure. This trapezoidal structure has relatively parallel upper and lower bases, and a sloping side connecting them. Compared to a V-shaped structure, besides the sloping sidewalls accelerating the flow of condensed water droplets to the bottom of the guide channel 101, the trapezoidal structure has a wider bottom, increasing the contact area with the condensate. Even in environments where the battery pack experiences slight shaking, it can stably contain and guide the condensate, effectively preventing liquid overflow. Furthermore, this gentle sidewall design simplifies the manufacturing of injection molds, helping to reduce production costs.

[0029] It should be noted that this invention is not limited to the two specific shapes described above. Any cross-sectional shape capable of collecting and guiding condensation should be included within the scope of protection of this invention.

[0030] Furthermore, to prevent condensation from adhering to and remaining in the guide channel 101 for extended periods, a hydrophobic coating can be applied to the guide channel 101. The hydrophobic coating material can be a fluorinated compound or an organosilicon. Fluorinated compounds offer the strongest hydrophobic properties, providing the lowest surface energy and the most durable hydrophobic effect. Fluorinated compounds exhibit excellent chemical stability, reacting almost entirely with no chemicals, including battery electrolytes (in case of leakage); they also possess good thermal stability, with high-performance fluoropolymers having a wide temperature range, capable of withstanding the operating temperature of the battery pack. Organosilicon compounds demonstrate excellent high and low temperature resistance, fully meeting the temperature requirements of the battery pack, and offer excellent electrical insulation, good chemical stability, good flexibility, and low cost.

[0031] In one implementation, such as Figure 9 and Figure 10 As shown, the cell module 200 is composed of multiple individual cell bodies 202 arranged in series and parallel to form a compact cell group or a battery pack composed of multiple cell modules 200. Each cell body 202 has a contact part 201 on its top surface. The contact part 201 includes a positive terminal 203 and a negative terminal 204. Multiple conductive elements 50 are provided. The support frame 30 has multiple second grooves 302 corresponding to the conductive elements 50. The second grooves 302 are used to accommodate the conductive elements 50. Each second groove 302 has a clearance opening 303 corresponding to each contact part 201. The contact part 201 is exposed from the corresponding clearance opening 303 and electrically connected to the conductive element 50, realizing the internal electrical connection of the cell protection assembly 100. The second grooves 302 play a limiting role for the conductive elements 50.

[0032] Specifically, conductive component 50 is made of aluminum.

[0033] Furthermore, multiple heat-conducting components 60 are provided corresponding to the conductive components 50, and one side of each heat-conducting component 60 is provided on each heat-conducting component 50. The heat-conducting component 60 is located in the second groove 302. The second groove 302 plays a limiting role for the heat-conducting component 60, preventing the heat-conducting component 60 from shifting during assembly. After assembly, the inner top surface of the protective cover 10 is attached to the other side of each heat-conducting component 60, so that the heat-conducting component 60 can transfer the high temperature of the conductive component 50 to the protective cover 10, and then diffuse it into the battery pack through the protective cover 10, so as to avoid the temperature of the conductive component 50 being too high and affecting the battery cell body 202. That is, the temperature difference is balanced by the heat-conducting component 60.

[0034] Specifically, the thermally conductive component 60 is a thermal pad, which is made of silicone or a phase change material. The phase change material is made by using a polymer material (such as polyolefin) as a matrix, encapsulating the phase change material such as paraffin, and supplementing it with thermally conductive fillers. As a preferred option, the thermal pad is made of silicone.

[0035] In one embodiment, one end of the temperature sensor 80 is disposed on the acquisition module 40, and the other end is attached and fixed to two adjacent battery cell bodies 202, spanning the gap between the two adjacent battery cell bodies 202. The temperature sensor transmits the temperature of the surface of the battery cell body 202 to the acquisition module 40. The acquisition module 40 is electrically connected to the battery management system. The acquisition module 40 transmits the acquired temperature data to the battery management system (not shown), enabling the battery management system to accurately control the operating temperature of the battery cell body 202.

[0036] Specifically, the temperature sensor 80 is a negative temperature coefficient thermistor, and the acquisition module 40 is a flexible circuit board.

[0037] In one embodiment, the cell module 200 is composed of multiple individual cell bodies 202 arranged in series and parallel to form a compact cell group or a battery pack composed of multiple cell modules 200. Each cell body 202 has a vent valve 205 on its top surface. The first groove 301 has multiple vent channels 304 corresponding to the positions of the multiple vent valves 205. The moisture-proof component 70 has multiple vent holes 701 corresponding to the multiple vent channels 304. The vent valves 205, vent channels 304 and vent holes 701 are connected in sequence to form a venting path, so that the steam discharged from the vent valves 205 can be effectively absorbed by the moisture-proof component 70, reducing the diffusion area of ​​thermal runaway.

[0038] Specifically, when the battery cell is working normally, the vent valve 205 remains sealed. When the battery cell experiences thermal runaway due to internal short circuits or other reasons, and the internal temperature and pressure rise sharply, the vent valve 205 will rupture or burst open under pressure, releasing high-temperature and high-pressure steam. The venting channels 304 are circular through holes that vertically penetrate the support frame 30. These venting channels 304 correspond one-to-one with the vent valves 205, ensuring that the airflow ejected from any vent valve 205 can be captured by an independent venting channel 304. On the moisture-proof component 70, a vent hole 701 is provided at the position opposite each venting channel 304. The vent hole 701 allows gas to pass through, and at the same time, by utilizing its aperture limitation and the properties of the material of the moisture-proof component 70 itself, it performs preliminary cooling and throttling of the passing steam.

[0039] When a single cell body 202 experiences thermal runaway: The high-temperature, high-pressure steam first opens the vent valve 205 at the top. Because the support frame 30 is in close contact with the top surface of the cell body 202, the ejected airflow is precisely guided into the vent channel 304 directly above, avoiding disorderly diffusion inside the cell assembly and thus protecting adjacent healthy cells.

[0040] The interior of the moisture-proof component 70 is filled with a three-dimensional adsorption network composed of functional fillers (such as silica gel and molecular sieve powder). High-temperature gases come into full contact with this huge specific surface area, and the large amount of water vapor they carry is rapidly adsorbed. At the same time, the heat of the gas is also efficiently absorbed, and the temperature is significantly reduced.

[0041] Through the above process, the high-temperature and flammable substances ejected from the faulty cell body 202 are cooled, dried and absorbed in a very short time, greatly reducing the diffusion area of ​​thermal runaway.

[0042] In one embodiment, the inner top surface of the protective cover 10 is provided with a protrusion 104 corresponding to the position of the first groove 301. The protrusion 104 engages with the edge of the first groove 301 to guide the protective cover 10 to self-position during assembly.

[0043] Specifically, a guide slope is provided at the edge of the first groove 301. This guide slope is made by milling or injection molding, and its angle is preferably 45 degrees, forming a smooth, flared entrance. A matching slope adapted to the guide slope is provided on the edge of the protrusion 104 facing the first groove 301. The operator only needs to roughly align the protective cover 10 above the support frame 30 and then gently lower it. At this time, precise XY plane alignment is not required. When the protective cover 10 descends, the protrusion 104 on it will first contact the edge of the first groove 301 of the support frame 30. Due to the presence of the matching slope of the protrusion 104 and the guide slope of the first groove 301, a sliding fit will be generated between them, guiding the protective cover 10 into the first groove 301 and achieving self-positioning.

[0044] In this embodiment, the acquisition module 40, conductive component 50, heat-conducting component 60, and moisture-proof component 70 are arranged in a receiving space formed by the protective cover 10 and the support frame 30 fastened together. A first groove 301 for receiving the moisture-proof component 70 is provided on the support frame 30, so that the moisture-proof component 70 can absorb the steam in the receiving space and prevent the steam from condensing into water droplets upon cooling. A guide channel 101 for collecting condensation is provided on the outer top surface of the protective cover 10. The edge of the protective cover 10 is bent downward to form a flow-guiding step 103. A notch 102 is opened on the protective cover 10, so that the guide channel 101 is connected to the flow-guiding step 103 through the notch 102. This allows the condensation collected by the guide channel 101 to flow to the flow-guiding step 103 through the notch 102. The flow-guiding step 103 guides the condensation to the bottom of the outer periphery of the battery cell module 200, preventing the condensation from dripping onto the electrical contact area of ​​the battery cell module 200 and causing a short circuit. Because the present invention provides a path for condensation to be drawn out on the outer top surface of the protective cover 10, a moisture-proof component 70 to absorb steam in the containment space, and a heat-conducting component 60 to balance the temperature difference between the conductive component 50 and the protective cover 10, it does not require sealing and moisture-proofing through a full potting method. This allows the battery cell module 200 to be repaired or maintained at any time or periodically, greatly reducing the cost of repair or maintenance.

[0045] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Under the concept of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of the present invention as described above. For the sake of brevity, they are not provided in detail. 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 of the technical features. 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 cell protection assembly for a cell module, characterized in that, The battery cell protection assembly includes: Protective cover, support frame, data acquisition module, conductive components, heat-conducting components, and moisture-proof components; The outer top surface of the protective cover is provided with a guide groove for collecting condensation. The edge of the protective cover is bent downward to form a guide step, and a notch is provided on the protective cover. The guide groove communicates with the guide step through the notch to guide the collected condensation to the bottom of the outer periphery of the battery cell module, so as to prevent the condensation from dripping onto the power connection area of ​​the battery cell module. The protective cover and the support frame together form an accommodating space; The acquisition module, the conductive component, the heat-conducting component, and the moisture-proof component are all disposed within the accommodating space, and the support frame is provided with a first groove for accommodating the moisture-proof component.

2. The cell protection assembly according to claim 1, characterized in that, The drainage steps are in the form of an "L" shape; and / or; The cross-section of the guide channel is any one of the following: "V" shaped structure, trapezoidal structure, W shaped structure, or rectangle.

3. The cell protection assembly according to claim 1, characterized in that, One side of the support frame is disposed on the battery cell module, the first groove is located on the other side of the support frame, at least one conductive element is provided, the conductive element is disposed on the support frame and located on one or both sides of the moisture-proof element, the acquisition module is disposed on the moisture-proof element, and the two ends of the conductive element are respectively connected to the acquisition module and the power receiving part of the battery cell module.

4. The cell protection assembly according to claim 3, characterized in that, The conductive element is provided in multiple ways, and the power receiving area of ​​the battery cell module is provided with multiple power receiving parts. The support frame is provided with multiple second grooves for accommodating the conductive element, and each second groove is provided with a clearance opening corresponding to each power receiving part. The power receiving part is exposed from the clearance opening and electrically connected to the conductive element.

5. The cell protection assembly according to claim 4, characterized in that, Multiple heat-conducting elements are provided corresponding to the conductive elements, and one side of each heat-conducting element is disposed on each conductive element. The inner top surface of the protective cover is attached to the other side of each heat-conducting element, and each heat-conducting element is located in the second groove.

6. The cell protection assembly according to claim 3, characterized in that, The battery cell module is provided with multiple vent valves, and the first groove is provided with multiple vent channels corresponding to the positions of the multiple vent valves. The moisture-proof component is provided with multiple vent holes corresponding to the multiple vent channels. The vent valves, the vent channels and the vent holes are connected in sequence to form a vent path.

7. The cell protection assembly according to claim 1, characterized in that, The battery cell protection assembly also includes a temperature sensor, one end of which is disposed on the acquisition module and the other end is attached to the battery cell module.

8. The cell protection assembly according to claim 1, characterized in that, The inner top surface of the protective cover has a protrusion corresponding to the position of the first groove. The protrusion engages with the edge of the first groove to guide the protective cover to self-position during assembly.

9. The cell protection assembly according to claim 1, characterized in that, A hydrophobic coating is provided inside the flow channel.

10. A battery pack, characterized in that, include: The battery cell module and the battery cell protection component as described in any one of claims 1-9, wherein the battery cell protection component is disposed on the battery cell module and electrically connected to the battery cell module.

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