Battery cell monitoring assembly and battery module

Abstract

The application discloses an electric core monitoring assembly and a battery module, and belongs to the technical field of batteries. The electric core monitoring assembly comprises a bottom shell, the bottom shell comprises a bottom wall, a side wall and a wind guide cover, and the bottom wall is provided with a through hole; the side wall is connected to the outer circumferential edge of the bottom wall and cooperates with the bottom wall to define a containing groove, and the side wall is provided with a first heat dissipation air inlet; the wind guide cover is connected to the side of the bottom wall away from the containing groove and covers the through hole, and the wind guide cover is provided with a first wind guide wall opposite to the bottom wall and a second wind guide wall connected between the first wind guide wall and the bottom wall, and the second wind guide wall is provided with a second heat dissipation air inlet. The wind guide cover forms a flow guide space between the bottom wall and an external mounting surface, an additional heat dissipation path is constructed, the overall heat dissipation area is increased, and the heat dissipation performance of the electric core monitoring assembly is improved.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a cell monitoring component and a battery module. Background Technology

[0002] Cell monitoring modules (CSC modules) are key components in energy storage battery systems. They are mainly used to monitor parameters such as cell voltage and temperature in real time to ensure the safe and stable operation of the battery system.

[0003] To ensure the reliability of CSC modules during long-term operation, heat dissipation performance is crucial. In existing technologies, heat dissipation holes are typically provided on the sidewalls of the CSC module housing to achieve air convection cooling. However, relying solely on these sidewall ventilation holes results in a limited heat dissipation area, a single heat dissipation path, and low overall heat dissipation efficiency, making it difficult to meet the heat dissipation requirements of modules operating at high power densities. Utility Model Content

[0004] This application provides a cell monitoring component and a battery module to at least partially solve the above-mentioned technical problems.

[0005] To achieve the above objectives, according to a first aspect of this application, a battery cell monitoring component is provided, including a bottom housing, the bottom housing comprising: The bottom wall has through holes; A sidewall is connected to the outer periphery of the bottom wall and together with the bottom wall defines a receiving groove; the sidewall is provided with a first heat dissipation vent. An air guide shroud is connected to the side of the bottom wall away from the receiving groove and covers the through hole. The air guide shroud has a first air guide wall disposed opposite to the bottom wall and a second air guide wall connected between the first air guide wall and the bottom wall. The second air guide wall is provided with a second heat dissipation vent.

[0006] Optionally, the sidewall is further provided with an opening, and the cell monitoring assembly further includes a printed circuit board assembly having connector terminals. The printed circuit board assembly is housed in the receiving groove, and the connector terminals are opposite to the opening.

[0007] Optionally, the sidewall includes: Two first sidewalls are arranged opposite to each other in a first direction; Two second sidewalls are disposed opposite each other in a second direction and are connected between the two first sidewalls; Wherein, the first direction intersects with the second direction, one of the first sidewalls is provided with the opening, and at least one of the other first sidewall and the two second sidewalls is provided with the first heat dissipation vent.

[0008] Optionally, in the first direction, the second air guide wall has a second heat dissipation vent on the side opposite to the first side wall with the opening.

[0009] Optionally, the second air guide wall includes: Two first air guide walls are arranged opposite to each other in the second direction; The second air guide wall is connected between the two first air guide walls, and the second air guide wall is also connected to the bottom wall; The first air guide wall is connected between the two first air guide sub-walls and is also connected to the second air guide sub-wall.

[0010] Optionally, the connection section between the second air guide wall and the first air guide wall is arc-shaped.

[0011] Optionally, the first sidewall with the opening is positioned opposite the battery cell; at least one second sidewall is provided with the first heat dissipation vent, and a baffle is protruding from the side of the second sidewall with the first heat dissipation vent away from the receiving groove. In the first direction, the baffle is positioned between the battery cell and the first heat dissipation vent.

[0012] Optionally, the connector terminals are provided in multiple ways, the openings are provided in multiple ways, and the sidewall opposite to the receiving groove is provided with multiple grooves. The multiple grooves are respectively arranged adjacent to the multiple openings, and the multiple grooves have different shapes to correspond to the multiple connector terminals respectively.

[0013] Optionally, the cell monitoring assembly further includes a heat sink, which is thermally connected to the printed circuit board assembly.

[0014] Optionally, the cell monitoring component further includes a thermal pad, with the heat sink and the printed circuit board assembly respectively attached to opposite sides of the thermal pad to achieve a thermally conductive connection between the heat sink and the printed circuit board assembly.

[0015] Optionally, the cell monitoring assembly further includes a cover plate, which covers the opening of the receiving groove; The outer periphery of the cover plate and the end of the side wall opposite to the bottom wall are engaged to make the cover plate detachably connected to the bottom shell.

[0016] According to a second aspect of this application, a battery module is provided, including a battery cell and a battery cell monitoring component as described above.

[0017] In the battery cell monitoring assembly of this application embodiment, the problem of ineffective heat dissipation during close mounting is solved by setting an air guide shroud on the outer side of the bottom wall of the bottom shell. Specifically, the air guide shroud includes a first air guide wall disposed opposite to the bottom wall, and a second air guide wall connecting the first air guide wall and the bottom wall. During assembly, the first air guide wall faces the external mounting surface, and the second air guide wall, as a connecting structure, keeps the first air guide wall and the bottom wall spaced apart, thereby forming an internal space for airflow guidance between them. This internal space communicates with the receiving groove through a through hole on the bottom wall and with the external environment through a second heat dissipation vent on the second air guide wall. Cooling airflow enters from the second heat dissipation vent, flows in the internal space of the air guide shroud, and enters the receiving groove through the through hole, achieving convective heat dissipation for the components built into the bottom shell. Compared with the shell structure that only relies on heat dissipation holes on the side walls, this solution forms an airflow guidance space between the bottom wall and the external mounting surface through the air guide shroud, constructing an additional heat dissipation path, increasing the overall heat dissipation area, and improving the heat dissipation performance of the battery cell monitoring assembly.

[0018] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0020] Figure 1 This is an exploded view of the battery cell monitoring component provided in an exemplary embodiment of this disclosure; Figure 2 yes Figure 1 A schematic diagram of the bottom shell structure; Figure 3 yes Figure 2 A partial structural diagram of the bottom shell; Figure 4 yes Figure 1 A structural diagram of the bottom shell from another perspective; Figure 5 yes Figure 4 A partial structural diagram of the bottom shell; Figure 6 yes Figure 1 An exploded view of the printed circuit board assembly, thermal pad, and heat sink in the diagram. Figure 7 yes Figure 1 A schematic diagram of the cover plate in the middle.

[0021] Explanation of reference numerals in the attached figures: 100. Battery cell monitoring assembly; 1. Bottom shell; 101. Receiving groove; 11. Bottom wall; 111. Through hole; 12. Side wall; 121. First side wall; 122. Second side wall; 1201. First heat dissipation vent; 1202. Opening; 1203. Groove; 1204. Clip groove; 13. Air guide cover; 131. First air guide wall; 132. Second air guide wall; 1321. First air guide sub-wall; 1322. Second air guide sub-wall; 1320. Second heat dissipation vent; 14. Baffle; 2. Printed circuit board assembly; 21. Connecting terminal; 3. Heat sink; 31. Substrate; 32. Heat dissipation fins; 4. Thermal pad; 5. Cover plate; 51. Snap-fit; 6. Support column; 7. First screw; 8. Second screw. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0023] Please see Figures 1 to 3 This application provides a battery cell monitoring component 100, which includes a bottom shell 1. The bottom shell 1 includes a bottom wall 11, a side wall 12, and an air guide shroud 13. The bottom wall 11 has a through hole 111. The side wall 12 is connected to the outer periphery of the bottom wall 11 and together with the bottom wall 11 defines a receiving groove 101. The side wall 12 has a first heat dissipation vent 1201. The air guide shroud 13 is connected to the side of the bottom wall 11 away from the receiving groove 101 and covers the through hole 111. The air guide shroud 13 has a first air guide wall 131 disposed opposite to the bottom wall 11 and a second air guide wall 132 connected between the first air guide wall 131 and the bottom wall 11. The second air guide wall 132 has a second heat dissipation vent 1320.

[0024] The technical solution of this application solves the problem of ineffective heat dissipation in the fitted installation state by setting an air guide shroud 13 on the outer side of the bottom wall 11 of the bottom shell 1. Specifically, the air guide shroud 13 includes a first air guide wall 131 disposed opposite to the bottom wall 11, and a second air guide wall 132 connecting the first air guide wall 131 and the bottom wall 11. During assembly, the first air guide wall 131 faces the external mounting surface, and the second air guide wall 132 serves as a connecting structure, keeping the first air guide wall 131 and the bottom wall 11 spaced apart, thereby forming an internal space for airflow guidance between them. This internal space communicates with the receiving groove 101 through the through hole 111 on the bottom wall 11, and communicates with the external environment through the second heat dissipation vent 1320 on the second air guide wall 132. Cooling airflow enters from the second heat dissipation vent 1320, flows in the internal space of the air guide shroud 13, and enters the receiving groove 101 through the through hole 111, realizing convective heat dissipation for the built-in components of the bottom shell 1. Compared to a housing structure that relies solely on heat dissipation holes on the side wall 12, this solution creates an additional heat dissipation path by forming a flow guide space between the bottom wall 11 and the external mounting surface through the air guide shroud 13, thereby increasing the overall heat dissipation area and improving the heat dissipation performance of the cell monitoring component 100.

[0025] Please see Figures 4 to 6 In some embodiments, the sidewall 12 is further provided with an opening 1202. The cell monitoring assembly 100 also includes a printed circuit board assembly 2, which has connector terminals 21. The printed circuit board assembly 2 is housed in a receiving groove 101, and the connector terminals 21 are opposite to the opening 1202. In these embodiments, by providing an opening 1202 in the sidewall 12 and aligning the connector terminals 21 of the printed circuit board assembly 2 with the opening 1202, convenient docking between the cell monitoring assembly 100 and external wiring harnesses or connectors is achieved. This design allows for electrical connection without disassembling the housing, improving assembly efficiency and maintenance convenience.

[0026] Please see Figure 4 and Figure 5In some embodiments, the sidewall 12 includes two first sidewalls 121 and two second sidewalls 122. The two first sidewalls 121 are disposed opposite each other in a first direction; the two second sidewalls 122 are disposed opposite each other in a second direction and connected between the two first sidewalls 121. The first direction intersects the second direction. One first sidewall 121 has an opening 1202, and at least one of the other first sidewall 121 and the two second sidewalls 122 has a first heat dissipation vent 1201. In these embodiments, since the opening 1202 opposite to the connector 21 is located on one first sidewall 121, and the first heat dissipation vent 1201 is located on the opposite first sidewall 121 or second sidewall 122, the exhaust direction of the heat dissipation airflow is offset from the insertion / removal direction of the connector 21. This layout effectively isolates the heat dissipation path from the electrical interface in space, thereby preventing hot air from blowing directly onto the connector 21 or external connection harness, while preventing hot air from flowing back into the receiving groove 101 through the opening 1202, reducing heat accumulation and improving the effectiveness and reliability of heat dissipation.

[0027] Please see Figure 4 and Figure 5 In some embodiments, the other first sidewall 121 and the two second sidewalls 122 are each provided with a plurality of first heat dissipation vents 1201. In these embodiments, the distribution of multiple heat dissipation openings 1202 on the three sidewalls 12 further increases the total heat dissipation area and improves air convection efficiency. This layout allows hot air to be discharged more evenly from the three sides of the housing, avoiding localized heat accumulation, while ensuring that all heat dissipation directions are separated from the sidewall 12 where the opening 1202 with the connector terminal 21 is located, ensuring spatial isolation between the heat dissipation path and the electrical interface.

[0028] Please see Figure 3 In some embodiments, in the first direction, the second air guide wall 132 has a second heat dissipation vent 1320 on the side opposite to the first side wall 121 with the opening 1202 (which can be understood as the first side wall 121 located on the rear side) (which can be understood as the front side of the second air guide wall 132). In these embodiments, since the second heat dissipation vent 1320 is located on the side of the second air guide wall 132 opposite to the first side wall 121 with the opening 1202, the airflow direction discharged from the second heat dissipation vent 1320 is away from the area where the connector terminal 21 is located. This arrangement avoids the hot air discharged from the air guide shroud 13 from directly facing the opening 1202, preventing it from causing thermal shock to the connector interface or flowing back into the receiving groove 101 through the opening 1202, which is beneficial to improving the independence of the heat dissipation path and the safety of the electrical connection.

[0029] Please see Figure 3In some embodiments, the second air guide wall 132 includes two first air guide sub-walls 1321 and a second air guide sub-wall 1322. The two first air guide sub-walls 1321 are arranged opposite to each other in a second direction. The second air guide sub-wall 1322 is connected between the two first air guide sub-walls 1321 and is also connected to the bottom wall 11. The first air guide wall 131 is connected between the two first air guide sub-walls 1321 and also connected to the second air guide sub-wall 1322. In these embodiments, the two first air guide sub-walls 1321 are arranged opposite to each other in a second direction, and together with the second air guide sub-wall 1322, they form a stable air guide frame, which helps to form a continuous internal airflow channel and improves the structural strength and airflow guiding performance of the air guide shroud 13.

[0030] Please see Figure 3 In some embodiments, the connection section between the second air guide wall 1322 and the first air guide wall 131 is arc-shaped. In these embodiments, the arc-shaped structure guides the airflow to a smooth turn, reducing flow resistance and improving the flow efficiency of cooling airflow within the interior space of the air guide shroud 13. Simultaneously, the arc transition helps to disperse structural stress, improving the overall strength and deformation resistance of the air guide shroud 13.

[0031] Please see Figure 4 and Figure 5 In some embodiments, a first sidewall 121 with an opening 1202 (which can be understood as...) Figure 4 A first sidewall 121 located at the top is positioned opposite the battery cell; at least one second sidewall 122 is provided with a first heat dissipation vent 1201, and a baffle 14 protrudes from the side of the second sidewall 122 with the first heat dissipation vent 1201 away from the receiving groove 101. In a first direction, the baffle 14 is positioned between the battery cell and the first heat dissipation vent 1201. In these embodiments, the baffle 14 protruding from the outer side of the second sidewall 122 with the first heat dissipation vent 1201, positioned in the first direction between the battery cell and the first heat dissipation vent 1201, can prevent electrolyte, ejected material, or flame from entering the receiving groove 101 from the first heat dissipation vent 1201 when the battery cell experiences abnormal ejection. This design improves the structural protection capability of the battery cell monitoring component 100 under extreme operating conditions, reduces the risk of internal circuit damage or short circuit caused by external ejected material intrusion, and enhances the safety performance of the component.

[0032] Please see Figure 4 and Figure 5In some embodiments, multiple connector terminals 21 are provided, and multiple openings 1202 are correspondingly provided. Multiple grooves 1203 are provided on the side wall 12 opposite to the receiving groove 101. The multiple grooves 1203 are respectively arranged adjacent to the multiple openings 1202, and the multiple grooves 1203 have different shapes to correspond to the multiple connector terminals 21. In these embodiments, the different shaped grooves 1203 serve as structural identifiers, forming a one-to-one correspondence with each connector terminal 21. During assembly, the differences in shape provide position identification and channel differentiation, helping operators accurately complete the insertion operation, reducing the risk of misconnection, and improving assembly efficiency.

[0033] Please see Figure 1 and Figure 6 In some embodiments, the cell monitoring assembly 100 further includes a heat sink 3, which is thermally connected to the printed circuit board assembly 2. In these embodiments, the heat sink 3 can dissipate the heat generated by the heat-generating components on the printed circuit board assembly 2 (PCBA) to the surrounding environment, improving the heat dissipation capacity of key components and reducing their operating temperature. This design helps improve the thermal conditions of the circuit and, in conjunction with the structure of the first heat dissipation vent 1201 and the air guide shroud 13, forms a multi-path heat dissipation mechanism, further enhancing the overall thermal management performance of the assembly.

[0034] Please see Figure 6 In some embodiments, the heat sink 3 is made of aluminum or copper and includes a substrate 31 thermally connected to the printed circuit board assembly 2 and heat dissipation fins 32 arrayed on the substrate 31. The heat sink 3 increases the heat exchange area with the air through the heat dissipation fins 32, thereby improving the heat dissipation capacity of the printed circuit board assembly 2 and facilitating the effective conduction and dissipation of heat to the surrounding environment.

[0035] Please see Figure 1 and Figure 6 In some embodiments, the cell monitoring assembly 100 further includes a thermal pad 4, with the heat sink 3 and the printed circuit board assembly 2 respectively attached to opposite sides of the thermal pad 4 to achieve a thermally conductive connection between the heat sink 3 and the printed circuit board assembly 2. In these embodiments, the thermal pad 4 fills the tiny gap between the heat sink 3 and the printed circuit board assembly 2, reducing the interface thermal resistance and improving the heat conduction efficiency. This design effectively avoids localized high temperatures caused by poor contact, ensuring the stable operation of the printed circuit board assembly 2.

[0036] In some embodiments, the thermal pad 4 is a thermally conductive silicone pad with good compression resilience and interface filling ability, which can effectively fill the micro gap between the two, reduce the interface thermal resistance, and improve the thermal conduction efficiency.

[0037] Please see Figure 1 and Figure 7In some embodiments, the cell monitoring assembly 100 further includes a cover plate 5, which covers the opening of the receiving groove 101. The outer periphery of the cover plate 5 and the end of the side wall 12 opposite to the bottom wall 11 are engaged, so that the cover plate 5 and the bottom shell 1 are detachably connected. In these embodiments, the cover plate 5 and the bottom shell 1 are detachably connected by the engagement of the outer periphery and the end of the side wall 12, and assembly can be completed without the use of fasteners. This design simplifies the installation process and helps to improve the efficiency of automated assembly; at the same time, it supports manual disassembly, and no external tools such as screwdrivers are needed during maintenance or repair, which improves the ease of assembly and subsequent maintenance of the cell monitoring assembly 100.

[0038] Please see Figure 3 , Figure 5 and Figure 7 In some examples, the outer periphery of the cover plate 5 is provided with a snap fastener 51, and the end of the side wall 12 opposite to the bottom wall 11 is provided with a snap groove 1204. During assembly, the snap fastener 51 elastically deforms and snaps into the snap groove 1204, thereby achieving reliable fixation between the cover plate 5 and the bottom shell 1. This connection method does not require the use of fasteners and supports manual installation and disassembly. While ensuring structural stability, it improves the assembly efficiency and maintenance convenience of the cell monitoring component 100.

[0039] Please see Figure 1 In some embodiments, two printed circuit board assemblies 2 are provided to increase the number of monitoring channels or achieve functional redundancy, thereby improving the data processing capability and system reliability of the cell monitoring assembly 100. Correspondingly, two heat sinks 3 and two thermal pads 4 are also provided to form independent heat conduction paths with each printed circuit board assembly 2, achieving efficient heat dissipation management. The cell monitoring assembly 100 also includes a support post 6, a first screw 7, and a second screw 8 for layered fixing of the two printed circuit board assemblies 2.

[0040] This application exemplarily describes the assembly process of the cell monitoring component 100 as follows: First, please refer to... Figure 6 Stack one of the printed circuit board assembly 2, thermal pad 4, and heat sink 3 in sequence, aligning their mounting holes. Insert the first screw 7 from the underside of the printed circuit board assembly 2 and tighten it to secure the printed circuit board assembly 2 to the heat sink 3. Similarly, stack the other printed circuit board assembly 2, thermal pad 4, and heat sink 3 in the same manner, aligning the holes, and use the first screw 7 to complete the other connection. Then, please refer to... Figure 1Place the base shell 1 on the workbench with its receiving slot 101 facing upwards and the air guide shroud 13 facing downwards. Place one of the pre-connected printed circuit board assemblies 2 into the base shell 1, aligning the side with the connector terminal 21 with the opening 1202 of the base shell 1. Secure it to the base shell 1 using the support column 6, which engages with the mounting holes on the base shell 1. Next, place another printed circuit board assembly 2 on the support column 6 in the same direction, adjust its position to align the mounting holes, and then use the second screw 8 to lock it to the top of the support column 6, forming a double-layered mounting structure. Finally, close the cover plate 5 onto the receiving slot 101, engaging the snap-fit ​​51 on the outer periphery of the cover plate 5 with the snap-fit ​​groove 1204 on the side wall 12 of the base shell 1, completing the overall assembly of the cell monitoring assembly 100. This design enables the stacking of two printed circuit board assemblies 2 by sharing a common support column 6, which helps to improve structural compactness and space utilization. It also supports step-by-step assembly and independent maintenance, thereby enhancing the integration and manufacturability of the components.

[0041] According to a second aspect of this application, a battery module is provided, including a battery cell and a battery cell monitoring component 100. The battery cell monitoring component 100 is as described above. Since this battery module adopts all the technical solutions of all the above embodiments, it has at least the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here.

[0042] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0043] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0044] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0045] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A cell monitoring component (100), characterized in that, Includes a bottom shell (1), said bottom shell (1) comprising: The bottom wall (11) is provided with a through hole (111); A side wall (12) is connected to the outer periphery of the bottom wall (11) and together with the bottom wall (11) defines a receiving groove (101). The side wall (12) is provided with a first heat dissipation vent (1201). An air guide shroud (13) is connected to the side of the bottom wall (11) away from the receiving groove (101) and covers the through hole (111). The air guide shroud (13) has a first air guide wall (131) disposed opposite to the bottom wall (11) and a second air guide wall (132) connected between the first air guide wall (131) and the bottom wall (11). The second air guide wall (132) is provided with a second heat dissipation vent (1320).

2. The cell monitoring component (100) according to claim 1, characterized in that, The sidewall (12) is also provided with an opening (1202), and the cell monitoring assembly (100) further includes a printed circuit board assembly (2), the printed circuit board assembly (2) having a connector terminal (21), the printed circuit board assembly (2) being housed in the receiving groove (101), and the connector terminal (21) being opposite to the opening (1202).

3. The cell monitoring component (100) according to claim 2, characterized in that, The sidewall (12) includes: Two first sidewalls (121) are arranged opposite each other in a first direction; Two second sidewalls (122) are disposed opposite each other in a second direction and are connected between the two first sidewalls (121); Wherein, the first direction intersects with the second direction, one of the first sidewalls (121) is provided with the opening (1202), and at least one of the other first sidewall (121) and the two second sidewalls (122) is provided with the first heat dissipation vent (1201).

4. The cell monitoring component (100) according to claim 3, characterized in that, In the first direction, the second air guide wall (132) has a second heat dissipation vent (1320) on the side opposite to the first side wall (121) with the opening (1202).

5. The cell monitoring component (100) according to claim 4, characterized in that, The second air guide wall (132) includes: Two first air guide walls (1321) are arranged opposite to each other in the second direction; The second air guide wall (1322) is connected between the two first air guide walls (1321), and the second air guide wall (1322) is also connected to the bottom wall (11); The first air guide wall (131) is connected between the two first air guide sub-walls (1321) and is connected to the second air guide sub-wall (1322).

6. The cell monitoring component (100) according to claim 5, characterized in that, The connection section between the second air guide wall (1322) and the first air guide wall (131) is arranged in an arc shape.

7. The cell monitoring component (100) according to claim 3, characterized in that, The first sidewall (121) with the opening (1202) is positioned opposite to the battery cell; at least one second sidewall (122) is provided with the first heat dissipation vent (1201), and a baffle (14) is protruding from the side of the second sidewall (122) with the first heat dissipation vent (1201) away from the receiving groove (101). In the first direction, the baffle (14) is positioned between the battery cell and the first heat dissipation vent (1201).

8. The cell monitoring component (100) according to claim 2, characterized in that, The connector (21) is provided in multiple ways, and the opening (1202) is provided in multiple ways. The sidewall (12) away from the receiving groove (101) is provided with multiple grooves (1203). The multiple grooves (1203) are respectively arranged adjacent to the multiple openings (1202), and the multiple grooves (1203) have different shapes to correspond to the multiple connectors (21).

9. The cell monitoring component (100) according to claim 2, characterized in that, The cell monitoring assembly (100) also includes a heat sink (3), which is thermally connected to the printed circuit board assembly (2).

10. The cell monitoring assembly (100) according to claim 9, characterized in that, The cell monitoring component (100) also includes a thermal pad (4), on which the heat sink (3) and the printed circuit board assembly (2) are respectively attached to opposite sides to achieve thermally conductive connection between the heat sink (3) and the printed circuit board assembly (2).

11. The cell monitoring component (100) according to claim 1, characterized in that, The cell monitoring assembly (100) also includes a cover plate (5), which covers the opening of the receiving groove (101); The outer periphery of the cover plate (5) and the end of the side wall (12) opposite to the bottom wall (11) are engaged to make the cover plate (5) detachably connected to the bottom shell (1).

12. A battery module, characterized in that, Includes battery cells and a battery cell monitoring assembly (100) as described in any one of claims 1 to 11.

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