Battery pack and electric device

Abstract

The utility model relates to a battery pack and a power utilization device. The battery pack comprises a battery cell group, a heat exchange plate, an acquisition assembly and an isolation assembly, the battery cell group comprises a plurality of battery cells arranged side by side, all the battery cells form a heat exchange surface, and each battery cell comprises a pole located on the heat exchange surface. And the heat exchange plate and the heat exchange surface are oppositely spaced in a first direction intersected with the side-by-side direction of the battery cell groups to form a glue filling space. The acquisition assembly is arranged in the glue filling space and comprises an acquisition terminal and an acquisition circuit board, and the acquisition circuit board extends along the side-by-side direction and is connected with the pole through the acquisition terminal so as to acquire the state information of the battery cell group. The isolation assembly is arranged in the glue filling space and at least blocks the heat-conducting glue in the glue filling space from flowing to the flow path of the acquisition circuit board. According to the technical scheme, the use amount of the heat-conducting glue can be reduced, and the weight of the battery pack is reduced.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to battery packs and electrical devices. Background Technology

[0002] The battery pack is a key component of electric vehicles, and its performance and cost directly affect the large-scale application of electric vehicles. A battery pack typically consists of multiple cells connected in series and / or parallel to meet voltage and power requirements. Inside the battery pack, data acquisition components collect data such as temperature and voltage from each group of cells to monitor the battery pack's operating status.

[0003] During operation, battery cells generate heat, and battery packs typically contain liquid cooling plates to cool them. The data acquisition components usually do not require cooling and do not come into contact with the liquid cooling plates. To improve heat transfer efficiency between the liquid cooling plates and the cells, thermally conductive adhesive is usually filled in the gap between them. However, this flowing thermally conductive adhesive can easily seep into the space between the data acquisition components and the liquid cooling plates, increasing the amount of adhesive used and consequently making the entire battery pack heavier, which is detrimental to achieving a lightweight battery pack. Utility Model Content

[0004] Therefore, it is necessary to provide a battery pack and power device to address the problem that the large amount of thermally conductive adhesive used results in a large overall weight of the battery pack, which is not conducive to achieving battery pack lightweighting.

[0005] In a first aspect, this application provides a battery pack, comprising:

[0006] A battery cell assembly includes multiple battery cells arranged side by side, all of which have a heat exchange surface, and each of the battery cells includes an electrode located on the heat exchange surface;

[0007] The heat exchange plate and the heat exchange surface are spaced apart in a first direction that intersects with the parallel direction of the battery cell assembly to form a filling space;

[0008] A data acquisition component, located in the glue-filling space, includes a data acquisition terminal and a data acquisition circuit board; the data acquisition circuit board extends along the parallel direction and is connected to the electrode post via the data acquisition terminal to acquire the status information of the battery cell assembly;

[0009] An isolation component is disposed in the filling space and at least obstructs the flow path of the thermally conductive adhesive in the filling space to the acquisition circuit board.

[0010] In some embodiments, the isolation assembly includes a partition and an adhesive barrier, the acquisition assembly is supported on the partition, and the partition is insulated between the acquisition assembly and the heat exchange surface;

[0011] The adhesive blocking component cooperates with the partition to prevent the thermally conductive adhesive in the adhesive filling space from flowing onto the flow path of the acquisition circuit board.

[0012] In some embodiments, the partition plate forms an isolation groove that opens toward the heat exchange plate, the isolation groove extends along the parallel direction, the adhesive blocking member includes a cover plate that covers the opening of the isolation groove, the acquisition circuit board and the acquisition terminal are both located in the isolation groove, and the cover plate obstructs the flow path of the thermally conductive adhesive in the adhesive filling space toward the isolation groove.

[0013] In some embodiments, the partition plate has flanges at both opposite ends along the second direction. The flanges are folded away from the heat exchange surface. Each flange includes a first edge strip and a second edge strip connected to each other. The first edge strip forms the sidewall of the isolation groove. The second edge strips of the two flanges extend towards each other and form the opening of the isolation groove at intervals. The cover plate is inserted into the isolation groove and abuts against the second edge strip to cooperate with the flanges and jointly obstruct the flow path of the thermally conductive adhesive in the filling space to the isolation groove. The first direction, the second direction, and the parallel direction intersect each other and are not coplanar.

[0014] In some embodiments, the battery cell assembly includes end plates located at both ends in the side-by-side direction, and the cover plate is fixedly connected to the end plates.

[0015] In some embodiments, the adhesive blocking component includes an adhesive blocking strip disposed between the partition and the heat exchange plate, the adhesive blocking strip protruding from the heat exchange surface in the first direction and abutting against the heat exchange plate; two adhesive blocking strips are spaced apart along the second direction to form an adhesive blocking space together with the heat exchange plate, and at least a portion of the acquisition circuit board is located in the adhesive blocking space;

[0016] The first direction, the second direction, and the parallel direction intersect each other but are not coplanar.

[0017] In some embodiments, the acquisition circuit board has a first end face facing the heat exchange plate, and the adhesive strip is fixed on both sides of the first end face along a second direction. The adhesive strip, the first end face, and the heat exchange plate together enclose the adhesive-resistant space.

[0018] In some embodiments, the adhesive barrier strip is configured as a deformable element that can be compressed and deformed in the first direction.

[0019] In some embodiments, the partition plate has two protruding spacers on the side opposite to the heat exchange surface, the two spacers are spaced apart along the second direction, the acquisition circuit board is located between the two spacers, the adhesive strip is attached to the spacers, and each spacer has a notch for the acquisition terminal to pass through.

[0020] In some embodiments, the adhesive-resistant strip is positioned higher than the spacer strip in the first direction.

[0021] In some embodiments, the battery cell assembly includes an explosion-proof valve disposed on a second end face of the battery cell assembly where it intersects with the heat exchange surface.

[0022] In some embodiments, the battery pack includes a sealant assembly having a pressure relief channel, and the explosion-proof valve is connected to the pressure relief channel.

[0023] In some embodiments, the adhesive baffle assembly includes a first adhesive baffle and a second adhesive baffle that both extend longitudinally along the parallel direction. The first adhesive baffle is disposed on the second end face and has an avoidance hole to avoid the explosion-proof valve. The second adhesive baffle is assembled and connected to the first adhesive baffle, and the two together form the pressure relief channel. The avoidance hole connects the explosion-proof valve and the pressure relief channel.

[0024] Secondly, this application provides an electrical device including a battery pack as described in any of the above embodiments, the battery pack being used to provide electrical energy.

[0025] Compared with the prior art, this application has the following beneficial effects:

[0026] The aforementioned battery pack and power supply device utilize thermally conductive adhesive to fill the space between the heat exchange plate and the heat exchange surface of the battery cells, thereby ensuring more uniform heat conduction between the heat exchange plate and the heat exchange surface. Compared to existing technologies where thermally conductive adhesive exists between the acquisition circuit board and the heat exchange plate, the insulating component prevents the thermally conductive adhesive in the filling space from flowing to the acquisition circuit board, reducing the amount of thermally conductive adhesive used and lowering the overall weight of the battery pack, thus contributing to its lightweight design. Attached Figure Description

[0027] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0028] Figure 1 This is a schematic diagram of the external shape of a battery pack according to some embodiments.

[0029] Figure 2This is a schematic diagram of the structure of a battery cell assembly according to some embodiments.

[0030] Figure 3 This is a schematic diagram of the assembly of the acquisition components and cell groups in a battery pack according to some embodiments.

[0031] Figure 4 This is an exploded view of a battery pack according to some embodiments.

[0032] Figure 5 for Figure 4 The image shows a cross-sectional view of the battery pack.

[0033] Figure 6 for Figure 5 Enlarged view of point A in the middle.

[0034] Figure 7 for Figure 5 The diagram shows a partial structural schematic of the battery pack.

[0035] Figure 8 for Figure 7 Enlarged view of point B in the middle.

[0036] Figure 9 for Figure 7 A partial decomposition diagram of the structure shown.

[0037] Figure 10 This is an exploded view of a battery pack according to other embodiments.

[0038] Figure 11 for Figure 10 The image shows a cross-sectional view of the battery pack.

[0039] Figure 12 for Figure 11 Enlarged view of point C in the middle.

[0040] Figure 13 for Figure 11 The diagram shows a partial structural schematic of the battery pack.

[0041] Figure 14 for Figure 13 Enlarged view of point D in the middle.

[0042] Figure 15 for Figure 13 Enlarged view of point E in the middle.

[0043] Figure 16 This is a partial structural diagram of a battery pack according to some embodiments.

[0044] Figure 17 for Figure 16 Enlarged view of point F in the middle.

[0045] Figure 18 for Figure 17An exploded view of the structure shown.

[0046] Figure 19 This is a partial structural diagram of a battery pack according to some embodiments.

[0047] Figure 20 This is a schematic diagram of the structure of the first baffle plate in some embodiments.

[0048] Figure 21 This is a schematic diagram of the internal structure of a battery pack according to some embodiments.

[0049] The reference numerals in the detailed embodiments are as follows:

[0050] 100. Battery pack; 10. Cell assembly; 11. Cell; X. Side-by-side direction; Z. First direction; Y. Second direction; S. Heat exchange surface; 11a. Terminal post; 11b. Groove; 11c. Explosion-proof valve; d2. Second end face; 12. End plate; 20. Heat exchange plate; k1. Filling space; 21. Flow channel; 30. Data acquisition assembly; 31. Data acquisition circuit board; d1. First end face; 32. Data acquisition terminal; 40. Isolation component; 41. Partition plate; c1. Isolation groove; 41a. Flanged edge; a1. First side strip; a2. Second side strip; 41b. Spacer strip; b1. Notch; 42. Adhesive blocking component; 42a. Cover plate; 42b. Adhesive blocking strip; k2. Adhesive blocking space; 50. Manifold; 60. Adhesive blocking component; t. Pressure relief channel; 61. First adhesive blocking plate; 62. Second adhesive blocking plate; h. Clearance hole; g1. Slot;

[0051] g2, hook; p1, limiting groove; p2, limiting protrusion; p21, first part; p22, second part; 70, box body; 71, surrounding beam; k3, installation space; k31, sub-space; 72, intermediate beam; k4, exhaust space; 80, box cover. Detailed Implementation

[0052] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0053] In the description of this application, it should be understood that, where they appear, the terms “center,” “longitudinal,” “lateral,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “clockwise,” “counterclockwise,” “axial,” “radial,” and “circumferential” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0054] Furthermore, where applicable, 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0055] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., shall be interpreted broadly. For example, they may refer to a fixed connection, a detachable connection, or an integral part; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; they may refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0056] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0057] It should be noted that, if an element is described as "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is described as "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0058] This application addresses the problem that the large amount of thermally conductive adhesive used results in a heavy battery pack, which is not conducive to achieving lightweight battery packs. It first provides a battery pack solution.

[0059] To facilitate understanding, some structures / components involved in the embodiments of this application will be introduced first.

[0060] The battery pack involved in this application embodiment can be used as a power source for electrical devices, providing electrical energy to them. Electrical devices can be, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, etc. Taking a vehicle as an example, the battery can be located at the rear, front, or bottom of the vehicle. The battery can provide electrical energy for the vehicle's drive and also for the vehicle's control system.

[0061] The battery pack includes a housing that protects the internal components of the battery pack. In some embodiments, reference is made to... Figure 1 The enclosure includes a housing 70 and a cover 80. The housing 70 forms an open-end receiving space, and the cover 80 closes the open end of the housing 70 to seal the receiving space. The internal components of the battery pack 100 are housed within the receiving space. Of course, other conventional forms can also be used for the enclosure.

[0062] The battery pack 100 also includes a cell assembly 10 housed within a casing. (See reference...) Figure 2 The battery cell assembly 10 consists of multiple battery cells 11 arranged in a side-by-side direction X. In some embodiments, end plates 12 are provided at both ends of the battery cell assembly 10 in the side-by-side direction X to fix the battery cells 11 (see reference). Figure 3 The end plates 12 at both ends can be fixed by side plates or other structures to bundle or clamp multiple cells 11 into groups. Multiple cell groups 10 can be arranged within the battery pack 100. In other embodiments, the cells 11 of the cell group 10 can also be fixed together by means of adhesive or other methods.

[0063] The battery cell 11 (also known as a single battery cell) is the smallest unit in the battery pack 100 where electrochemical reactions occur. The battery cell 11 can be a pouch cell, a rigid cell, or other types. Specifically, the battery cell 11 can be a prismatic cell, a cylindrical cell, or other types. The battery cell 11 typically includes a package and an electrode assembly, with the electrode assembly encapsulated within the package. In one embodiment, the package includes a housing and end caps, which together form a receiving cavity, within which the electrode assembly is mounted. The housing and end caps can be, but are not limited to, metallic materials such as aluminum or steel.

[0064] Electrode assemblies typically include a positive electrode, a negative electrode, and a separator separating the positive and negative electrodes. An electrolyte can be injected into the battery cell, allowing it to penetrate the electrode assembly and provide ion migration pathways for electrochemical reactions, as well as conductivity. Electrode assemblies can be in the form of wound or stacked types. One or more electrode assemblies can be installed within the battery cell 11.

[0065] The battery cell 11 typically also includes a terminal 11a, which is conductive. One end of the terminal 11a can extend out of the battery cell 11 to connect to an external circuit, and the other end can be directly or indirectly electrically connected to the tab of the electrode assembly. An adapter piece can be provided between the terminal 11a and the tab to ensure a reliable electrical connection. The battery cell 11 may also be equipped with explosion-proof structures (such as explosion-proof valve 11c, explosion-proof grooves, etc.) to release pressure when the internal pressure of the battery cell 11 is too high, reducing the risk of explosion.

[0066] The battery pack 100 typically also includes a data acquisition component 30 for collecting operating data (temperature / voltage) of the battery cells 11. The battery pack 100 may also include a battery management system (BMS), to which the data acquisition component 30 is connected and sends the collected operating data of the battery cells 11 to the BMS.

[0067] Reference Figure 3 The acquisition component 30 includes an acquisition circuit board 31 and acquisition terminals 32. The acquisition terminals 32 are directly or indirectly connected to the electrode post 11a to acquire voltage / temperature data of the battery cell 11. In some embodiments, refer to... Figure 3 The battery pack 100 includes a busbar 50, which is electrically connected to the terminal 11a of the battery cell 11 by means of welding, snap-fit, or other methods. The acquisition terminal 32 is indirectly connected to the terminal 11a through the busbar 50.

[0068] The acquisition circuit board 31 can be an FPC (flexible printed circuit board), FCB (printed circuit board), etc., and is connected to the BMS via connection terminals to send the data acquired by the acquisition terminals 32 to the BMS. There are usually multiple acquisition terminals 32, arranged on both sides of the acquisition circuit board 31 in the width direction to acquire data from multiple battery cells 11. The acquisition terminals 32 and the acquisition circuit board 31 can be soldered or integrally connected to achieve signal transmission. Optionally, the acquisition terminals 32 are made of metal foil covered with an insulating film. Optionally, the acquisition circuit board 31 extends in a strip shape along the parallel direction X of the battery cell group 10, and the acquisition terminals 32 are arranged on one or both sides in its width direction, so that the acquisition assembly 30 can acquire the voltage / temperature data of each battery cell 11 in the entire battery cell group 10.

[0069] The battery pack 100 in the embodiments of this application will be described in detail below.

[0070] Reference Figures 4 to 6 The battery pack 100 provided in this application embodiment includes a cell assembly 10, a heat exchange plate 20, a data acquisition component 30, and an isolation component 40. The cell assembly 10 includes a plurality of cells 11 arranged side-by-side, all cells 11 forming a heat exchange surface S, and each cell 11 including a terminal post 11a located on the heat exchange surface S. The heat exchange plate 20 and the heat exchange surface S are spaced apart in a first direction Z intersecting the side-by-side direction X of the cell assembly 10 to form a filling space k1. The data acquisition component 30 is disposed in the filling space k1 and includes a data acquisition terminal 32 and a data acquisition circuit board 31. The data acquisition circuit board 31 extends along the side-by-side direction X and is connected to the terminal post 11a via the data acquisition terminal 32 to acquire the status information of the cell assembly 10. The isolation component 40 is disposed in the filling space k1 and at least blocks the flow path of the thermally conductive adhesive within the filling space k1 to the data acquisition circuit board 31.

[0071] The side-by-side direction X of the cell assembly 10 is the arrangement direction of each cell 11 in the cell assembly 10. If the cell 11 is a square cell, the side-by-side direction X corresponds to the thickness direction of the cell 11. In a certain operating state, the heat exchange surface S of the cell assembly 10 is located on one or both sides in the height direction of the cell assembly 10, and the electrode post 11a of each cell 11 is arranged on the heat exchange surface S.

[0072] The heat exchange plate 20 is provided with a flow channel 21 (see reference). Figure 6 The heat exchange medium flows within the flow channel 21. The type of heat exchange medium is not limited; it can be liquid, gas, or a mixture of two phases. The presence of the heat exchange medium causes the temperature of the heat exchange plate 20 to be higher or lower than the temperature of the battery cell assembly 10, allowing the heat exchange plate 20 to heat or cool the battery cell 11.

[0073] The heat exchange plate 20 and the heat exchange surface S are arranged at intervals relative to each other along the first direction Z, forming a filling space k1 between them (refer to...). Figure 6In one operating state, the first direction Z is vertical, corresponding to the height direction of the battery cell assembly 10. The heat exchange plate 20 and the heat exchange surface S can conduct heat through the thermally conductive adhesive in the filling space k1, enabling the heat exchange plate 20 to regulate the temperature of the battery cell assembly 10. Filling the space between the heat exchange plate 20 and the heat exchange surface S with thermally conductive adhesive results in more uniform heat conduction. It should be noted that since the heat exchange plate 20 can completely cover one or both sides of the battery cell assembly 10 in the height direction, the end faces of the battery cell assembly 10 located on one or both sides in its height direction can both be heat exchange surfaces S. The heat exchange plate 20 can not only regulate the temperature within the filling space k1 through the filling space k1, but can also contact one or both end faces of the battery cell assembly 10 in the height direction to achieve temperature regulation and improve heat exchange efficiency. That is, the thermally conductive adhesive can also be filled on one or both end faces of the battery cell assembly 10 in the height direction to achieve heat exchange with the heat exchange plate 20.

[0074] The acquisition component 30 and the isolation component 40 are disposed in the glue filling space k1. Specifically, the isolation component 40 forms an isolation space within the glue filling space k1, and at least the acquisition circuit board 31 is located in the isolation space. This allows the isolation component 40 to be positioned in the flow path of the thermally conductive adhesive from the glue filling space k1 to the acquisition circuit board 31, thereby hindering the flow of the thermally conductive adhesive to the acquisition circuit board 31 and reducing the amount of thermally conductive adhesive used.

[0075] In this embodiment, the battery pack 100 fills the filling space k1 between the heat exchange plate 20 and the heat exchange surface S of the cell assembly 10 with thermally conductive adhesive. This makes the heat conduction between the heat exchange plate 20 and the heat exchange surface S more uniform. Compared with the prior art where there is thermally conductive adhesive between the acquisition circuit board 31 and the heat exchange plate 20, the thermally conductive adhesive in the filling space k1 cannot flow to the acquisition circuit board 31 due to the barrier of the isolation component 40. This reduces the amount of thermally conductive adhesive used, lowers the overall weight of the battery pack 100, and helps to achieve a lightweight battery pack 100.

[0076] It is worth noting that in some embodiments, the acquisition component 30 is entirely arranged within the isolation space formed by the isolation component 40. In other embodiments, the acquisition terminal 32 is located outside the isolation space formed by the isolation component 40. When the acquisition terminal 32 is located outside the isolation space, the thermally conductive adhesive can flow to the acquisition terminal 32, covering the acquisition terminal 32, the electrode 11a, and even the busbar 50, and conducting their heat to the heat exchange plate 20, thus preventing the electrode 11a from overheating.

[0077] In some embodiments, refer to Figure 6 The isolation assembly 40 includes a partition 41 and a resistive element 42. The acquisition assembly 30 is supported on the partition 41, which is insulated between the acquisition assembly 30 and the heat exchange surface S. The resistive element 42 cooperates with the partition 41 to prevent the thermally conductive adhesive in the filling space k1 from flowing to the acquisition circuit board 31.

[0078] The partition 41 has an insulating effect and is positioned between the acquisition component 30 and the heat exchange surface S. It serves to insulate and isolate the battery cell 11 and the acquisition component 30, preventing leakage current from the battery cell 11 from adversely affecting the acquisition component 30. The partition 41 may be, but is not limited to, made of plastic. It is readily understood that the partition 41 has a clearance portion to allow electrical connection between the battery cell 11a and the acquisition terminal 32, or between the acquisition terminal 32 and the busbar 50. Figure 6 It is understood that when the battery pack 100 includes a busbar 50, the busbar 50 can be disposed on the separator 41 and electrically connected to the terminal post 11a via a clearance on the separator 41, and the acquisition terminal 32 is connected to the busbar 50.

[0079] The adhesive blocking component 42 is located on the side of the partition 41 away from the battery cell 11, and works together with the partition 41 to form an isolation space. At least the acquisition circuit board 31 is located in the isolation space to prevent the thermally conductive adhesive in the filling space k1 from flowing to the acquisition circuit board 31.

[0080] At this time, the isolation component 40 can not only isolate the thermally conductive adhesive and the acquisition circuit board 31, but also insulate the acquisition component 30 and the battery cell 11. It has multiple uses and the functions of the isolation component 40 are more abundant, and the structure of the battery pack 100 is simplified.

[0081] In some embodiments, combined with Figures 6 to 9 Understandably, the partition 41 has an isolation groove c1 that opens toward the heat exchange plate 20. The isolation groove c1 extends along the parallel direction X. The adhesive blocking component 42 includes a cover plate 42a that covers the opening of the isolation groove c1. The acquisition circuit board 31 and the acquisition terminal 32 are both located in the isolation groove c1. The cover plate 42a obstructs the flow path of the thermally conductive adhesive in the adhesive filling space k1 toward the isolation groove c1.

[0082] Understandably, the isolation groove c1 is located on the side of the separator 41 opposite to the battery cell 11. At this time, the isolation groove c1 forms the isolation space mentioned above. The acquisition circuit board 31 and the acquisition terminal 32 are both arranged in the isolation space. In this way, less thermal conductive adhesive flows to the acquisition circuit board 31 and the acquisition terminal 32, which can greatly reduce the amount of thermal conductive adhesive used, and the weight of the battery pack 100 is significantly reduced.

[0083] Specifically, the cover plate 42a can be arranged inside the isolation groove c1 or outside the isolation groove c1, and there is no specific limitation.

[0084] In practical applications, the acquisition component 30 is first installed in the isolation groove c1 through the opening of the isolation groove c1, and then the cover plate 42a is placed on top to seal the isolation groove c1. In this way, the thermally conductive adhesive and the acquisition component 30 are isolated, while also facilitating the installation of the acquisition component 30.

[0085] Specifically, in some embodiments, refer to Figure 8The partition plate 41 has flanges 41a at both opposite ends along the second direction Y. The flanges 41a are folded away from the heat exchange surface S. Each flange 41a includes a first side strip a1 and a second side strip a2 connected to each other. The first side strip a1 forms the sidewall of the isolation groove c1. The second side strips a2 of the two flanges 41a extend towards each other and form the opening of the isolation groove c1 at intervals. The cover plate 42a is inserted into the isolation groove c1 and abuts against the second side strip a2 to cooperate with the flanges 41a and jointly obstruct the flow path of the thermally conductive adhesive in the filling space k1 to the isolation groove c1. The first direction Z, the second direction Y, and the parallel direction X intersect each other but are not coplanar.

[0086] In one usage state, the first direction Z corresponds to the vertical direction, and the second direction Y and the side-by-side direction X are two roughly perpendicular horizontal directions.

[0087] Specifically, after folding the edge of the partition 41 twice, a flange 41a with a first edge strip a1 and a second edge strip a2 is obtained. The two opposing flanges 41a are spaced apart to form an isolation groove c1. Compared with fixing other structures on the partition 41 to form the isolation groove c1 by separate connection, this method is simpler and more economical.

[0088] Furthermore, a slot is formed between the second edge strips a2 of the two flanges 41a, and the cover plate 42a is inserted into the isolation groove c1 and the slot is closed. This can reduce the space occupied by the isolation component 40 in the first direction Z, which helps to increase the size of the filling space k1 in the first direction Z and further reduce the amount of thermally conductive adhesive used.

[0089] It is worth noting that the end surface of the cover plate 42a facing the heat exchange plate 20 in the first direction Z is usually in contact with the inner wall of the heat insulation groove so that the cover plate 42a closes the groove opening.

[0090] In some embodiments, refer to Figure 7 and Figure 8 The battery cell assembly 10 includes an end plate 12 located in the parallel direction X, and a cover plate 42a is fixedly connected to the end plate 12.

[0091] Specifically, the methods for fixing the end plate 12 and the cover plate 42a include fastening and snap-fitting. For example, both the cover plate 42a and the end plate 12 are provided with threaded holes, and screws are installed in the threaded holes of both to fix them together. Optionally, the screws are installed on the cover plate 42a and the end plate 12 along the first direction Z (which can be the vertical direction in actual use) for easy operation.

[0092] At this point, the end plate 12 is used to fix the cover plate 42a, which is simple and easy to implement.

[0093] Of course, in other embodiments, the cover plate 42a may also be fixedly connected to the partition plate 41.

[0094] The above embodiments provide a solution that uses the isolation groove c1 formed by the cover plate 42a and the partition plate 41 as a heat insulation space to prevent the thermally conductive adhesive in the filling space k1 from flowing to the acquisition circuit board 31. The following embodiments will provide other configuration options for the isolation component 40.

[0095] In some embodiments, combined with Figure 10 , Figure 11 and Figure 12 The adhesive resist component 42 includes an adhesive resist strip 42b disposed between the partition plate 41 and the heat exchange plate 20. The adhesive resist strip 42b protrudes from the heat exchange surface S in a first direction Z and abuts against the heat exchange plate 20. Two adhesive resist strips 42b are spaced apart along a second direction Y to form an adhesive resist space k2 together with the heat exchange plate 20. At least a portion of the acquisition circuit board 31 is located in the adhesive resist space k2.

[0096] The adhesive resist 42 can extend along the extension direction of the acquisition circuit board 31 and is roughly strip-shaped. The adhesive resist space k2 serves as an isolation space, where the adhesive resist strip 42b and the heat exchange plate 20 work together to prevent the thermally conductive adhesive from flowing to the acquisition circuit board 31.

[0097] Specifically, one end of the adhesive blocking component 42 abuts against the heat exchange plate 20, and the other end abuts against the partition plate 41. The three together form the adhesive blocking space k2. At this time, the entire acquisition circuit board 31 is located in the adhesive blocking space k2, and the acquisition terminal 32 can be located inside or outside the adhesive blocking space k2.

[0098] Alternatively, one end of the adhesive resisting component 42 abuts against the heat exchange plate 20, and the other end abuts against the acquisition circuit board 31. The acquisition circuit board 31, the heat exchange plate 20 and the adhesive resisting component 42 together form the adhesive resisting space k2. The first end face d1 of the acquisition circuit board 31 in the first direction Z is located in the adhesive resisting space k2.

[0099] Regardless of the method, the adhesive barrier 42 can separate the space between the acquisition circuit board 31 and the heat exchange plate 20 from the adhesive filling space k1, effectively reducing the amount of thermally conductive adhesive used and reducing the weight of the battery pack 100.

[0100] Specifically, in some embodiments, combined with Figure 13 , Figure 14 and Figure 15 The acquisition circuit board 31 has a first end face d1 facing the heat exchange plate 20, and a resist strip 42b is fixed on two sides of the first end face d1 along the second direction Y. The resist strip 42b, the first end face d1, and the heat exchange plate 20 together form a resist space k2.

[0101] There is a gap between the first end face d1 and the heat exchange plate 20. One end of the adhesive blocking element 42 is disposed on the first end face d1 and located on both sides of the first end face d1 in the second direction Y. At this time, the thermally conductive adhesive cannot flow into the space between the first end face d1 and the heat exchange plate 20 due to the obstruction of the adhesive blocking element 42, and the amount of thermally conductive adhesive used is significantly reduced.

[0102] Since the acquisition terminals 32 extend from both ends of the acquisition circuit board 31 in the second direction Y, and the resistive adhesive 42 is disposed on the first end face d1, the resistive adhesive 42 will not interfere with the extension of the acquisition terminals 32, and there is no need to avoid the acquisition terminals 32, thus simplifying the structure of the resistive adhesive 42. Since the acquisition terminals 32 are located outside the resistive adhesive space k2, they can be covered with thermally conductive adhesive to transfer heat with the heat exchange plate 20, which helps to reduce the heat of the electrode post 11a connected to the acquisition terminals 32 and improve the situation of heat accumulation on the electrode post 11a.

[0103] Further in the embodiments, refer to Figure 14 and Figure 15 Two spacer bars 41b protrude from the side of the partition plate 41 away from the heat exchange surface S, and the two spacer bars 41b are spaced apart along the second direction Y. The acquisition circuit board 31 is located between the two spacer bars 41b, and the adhesive strip 42b is attached to the spacer bars 41b. Each spacer bar 41b has a notch b1 for the acquisition terminal 32 to pass through.

[0104] The two spacers 41b form a limiting space. When assembling the battery pack 100, the acquisition circuit board 31 is installed within the limiting space, and the acquisition terminal 32 protrudes through the notch b1 on the spacer 41b. In this way, the acquisition component 30 is positioned and installed by setting the spacers 41b.

[0105] Specifically, the spacer 41b is positioned higher than the first end face d1 of the acquisition circuit board 31 in the first direction Z, so that the resist strip 42b supported on the first end face d1 and the spacer 41b can be fitted together in the second direction Y. In this way, gaps that can accommodate thermally conductive adhesive can be avoided between the resist strip 42b and the spacer 41b, reducing the amount of thermally conductive adhesive used.

[0106] In one specific embodiment, reference is made to Figure 12 In the first direction Z, the adhesive strip 42b is set higher than the spacer 41b. The spacer 41b mainly serves to position and install the acquisition component 30. If its height is set too high, it will increase the weight of the battery pack 100. Therefore, setting the spacer 41b lower than the adhesive strip 42b can reduce the material used for the spacer 41b and reduce the weight of the battery pack 100.

[0107] It should be noted that, in order to improve the support stability of the adhesive strip 42b on the first end face d1, the adhesive strip 42b and the first end face d1 can be fixedly connected by means of bonding or other methods.

[0108] In some embodiments, the adhesive barrier strip 42b is configured as a deformable element that can be compressed and deformed in a first direction Z.

[0109] Specifically, the adhesive-resistant element 42 can be a deformable element made of a flexible material (such as silicone, rubber, etc.) or a deformable element formed by an elastic telescopic structure. For example, the elastic telescopic structure includes two frames that enclose a closed space, the two frames nested together and movable toward or away from each other along a first direction Z to change the height of the closed space, and an elastic element disposed within the closed space to provide an elastic force that causes the two frames to move away from each other.

[0110] When assembling the battery pack 100, thermally conductive adhesive is typically applied to the heat exchange surface S and / or the heat exchange plate 20 first. Then, an external force is applied to the heat exchange plate 20, causing the thermally conductive adhesive to flow and fill the adhesive-filling space k1 between the heat exchange surface S and the heat exchange plate 20. Furthermore, the adhesive-resistant strip 42b is designed to be compressible. During the application of external force, the adhesive-resistant strip 42b can be compressed to a certain thickness, controlling the thickness of the thermally conductive adhesive. Moreover, since the adhesive-resistant strip 42b is a deformable component, during the downward pressing of the heat exchange plate 20, the adhesive-resistant strip 42b and the heat exchange plate 20 are not in rigid contact. This effectively prevents concave deformation on the side of the heat exchange plate 20 in contact with the adhesive-resistant strip 42b, reducing the risk of deformation and collapse of the internal flow channel 21 of the heat exchange plate 20.

[0111] Understandably, in some embodiments, the spacer 41b is set lower than the adhesive barrier 42b in the first direction Z to prevent the heat exchange plate 20 from being obstructed by the spacer 41b and undergoing concave deformation when it is pressed down.

[0112] In some embodiments, see Figure 2 , Figure 6 and Figure 12 The heat exchange surface S is recessed in the first direction Z where it intersects with the parallel direction X of the battery cell assembly 10, and the electrode post 11a is located in the recess 11b.

[0113] The groove 11b extends along the parallel direction X of the cell assembly 10 and passes through both ends of the cell assembly 10. In the conventional setting, the electrode post 11a usually protrudes from the heat exchange surface S. After setting the collection component 30 and the isolation component 40 at the electrode post 11a, the overall height of the cell 11 will be large, resulting in a large filling space between the heat exchange surface S and the heat exchange plate 20, a large amount of thermally conductive adhesive is consumed, and the overall height is increased, which is not conducive to space utilization.

[0114] At this point, a groove 11b is provided on the heat exchange surface S, and the electrode post 11a is placed in the groove 11b. The collection component 30 and the isolation component 40 are correspondingly arranged in the groove 11b. This reduces the filling space, significantly reduces the amount of thermally conductive adhesive used, and the weight of the battery pack 100 is significantly reduced. At the same time, the thermally conductive adhesive fills the filling space k1, so that the heat exchange plate 20 can regulate the temperature of the electrode post 11a and improve the heat exchange efficiency. It should be noted that the configuration of this application does not change the overall structural shape of the heat exchange plate 20. The side of the heat exchange plate 20 opposite to the heat exchange surface S is flat, avoiding the problems of poor heat exchange effect and difficulty in processing caused by changing the structure of the heat exchange plate 20.

[0115] In some embodiments, combined with Figure 2 and Figure 4 It is understood that the battery cell assembly 10 has heat exchange surfaces S at both opposite ends in the first direction Z, and each battery cell 11 has multiple pole posts 11a on each heat exchange surface S, and each heat exchange surface S is equipped with a heat exchange plate 20.

[0116] Specifically, each battery cell 11 includes multiple sets of electrode posts, and each set of electrode posts includes two electrodes 11a, namely a positive electrode and a negative electrode. Optionally, each heat exchange surface S may be provided with one set of electrode posts. Understandably, the electrode assembly located inside the battery cell 11 includes multiple tabs, each tab being electrically connected to a corresponding electrode 11a.

[0117] Compared to the traditional configuration of only one positive terminal and one negative terminal, this embodiment configures multiple terminals 11a on the cell 11, which can increase the current flow area between the tab and the terminal 11a, reduce the internal resistance of the battery, help improve the charging and discharging capacity of the cell 11, improve its low-temperature performance, reduce charging time, and improve the temperature rise during fast charging.

[0118] In some embodiments, refer to Figure 2 The battery cell assembly 10 includes an explosion-proof valve 11c, which is located on the second end face d2 where the battery cell assembly 10 intersects with the heat exchange surface S.

[0119] Specifically, the second end face d2 is located at at least one end of the cell assembly 10 in the second direction Y. The explosion-proof valve 11c can be arranged on at least one of the second end faces d2. In this case, the explosion-proof valve 11c avoids the heat exchange surface S, and the thermally conductive adhesive in the filling space k1 cannot cover the explosion-proof valve 11c, thus not affecting the pressure relief of the explosion-proof valve 11c.

[0120] In some embodiments, refer to Figure 16 The battery pack 100 also includes a sealant assembly 60, which forms a pressure relief channel t, and the explosion-proof valve 11c is connected to the pressure relief channel t.

[0121] Specifically, the glue-blocking assembly 60 is disposed on the second end face d2 of the battery cell assembly 10, and the explosion-proof valve 11c extends into the pressure relief channel t formed by the glue-blocking assembly 60. When the explosion-proof valve 11c is opened, the high-pressure and high-temperature flue gas ejected from it can be smoothly discharged from the pressure relief channel t.

[0122] In practical applications, to improve the temperature of the battery cell 11, in addition to filling the space between the heat exchange surface S and the heat exchange plate 20 with thermally conductive adhesive, thermally conductive adhesive can also be filled on the side of the battery cell 11 to improve the heat exchange efficiency between the battery cell 11 and the heat exchange plate 20. Since the explosion-proof valve 11c is located on the side of the battery cell 11, a baffle assembly 60 is installed on the side of the battery cell 11 to prevent the thermally conductive adhesive from covering the explosion-proof valve 11c, ensuring that the explosion-proof valve 11c can release pressure smoothly.

[0123] Further in the embodiments, refer to Figure 17 and Figure 18 The sealing assembly 60 includes a first sealing plate 61 and a second sealing plate 62 extending longitudinally along the parallel direction X. The first sealing plate 61 is located on the second end face d2 and has a clearance hole h for avoiding the explosion-proof valve 11c. The second sealing plate 62 is assembled and connected to the first sealing plate 61, and the two together form the pressure relief channel t. The clearance hole h connects the explosion-proof valve 11c and the pressure relief channel t.

[0124] Typically, each explosion-proof valve 11c is equipped with a clearance hole h. The explosion-proof valve 11c extends into the clearance hole h, and may even extend into the pressure relief channel t. The first baffle plate 61 and the second end face d2 can be fitted together for better adhesive resistance.

[0125] The first baffle plate 61 and the second baffle plate 62 extend approximately along the parallel direction X of the cell assembly 10, and together they form a pressure relief channel t, which is open at both ends in the parallel direction X. The first baffle plate 61 and the second baffle plate 62 can be fastened together, snapped together, etc.

[0126] At this point, a pressure relief channel t is formed by the first baffle plate 61 and the second baffle plate 62, which has a simple structure and is easy to implement.

[0127] Furthermore, referring to Figure 17 and Figure 18 One of the first baffle plate 61 and the second baffle plate 62 is provided with a slot g1 and the other is provided with a hook g2. Both the slot g1 and the hook g2 extend along the parallel direction X. The hook g2 can be inserted into the slot g1 along the parallel direction X and hooked with the slot g1.

[0128] Combination Figure 17 It is understood that a barb is formed inward at the opening of the slot g1, and the hook g2 is inserted into the slot g1 and hooked with the barb to prevent the hook g2 from coming out of the slot g1.

[0129] At this point, the first baffle plate 61 and the second baffle plate 62 are fixed by the cooperation of the slot g1 and the hook g2, making assembly more convenient.

[0130] In some embodiments, the battery cell assembly 10 includes end plates 12 at both ends located in the parallel direction X, and a first baffle plate 61 is limitedly connected to the end plates 12. That is, the first baffle plate 61 is fixed to the battery cell assembly 10 through the end plates 12 at both ends, eliminating the need to set a connection structure on the battery cell 11, simplifying the structure of the battery cell 11 and reducing manufacturing costs.

[0131] Specifically, in the embodiments, refer to Figure 18 and Figure 19 One of the end plate 12 and the first baffle plate 61 is provided with a limiting groove p1. One end of the limiting groove p1 is open in its own extension direction, and the other is provided with a limiting protrusion p2. The limiting protrusion p2 is inserted into the limiting groove p1 in a concave-convex fit along the open end of the limiting groove p1.

[0132] The limiting groove p1 extends in a direction intersecting the parallel direction X (e.g., the second direction Y mentioned above), with one end open and the other end closed. The limiting protrusion p2 extends in the same direction as the limiting groove p1 and can be inserted into the limiting groove p1 along the open end of the limiting groove p1, and engage with the limiting groove p1 in a concave-convex manner.

[0133] At this time, the end plate 12 and the first baffle plate 61 are assembled and fixed by the cooperation of the limiting groove p1 and the limiting protrusion p2, which is easy to operate.

[0134] Furthermore, combined Figure 20 and Figure 19 It is understood that the limiting protrusion p2 includes a first part p21 and a second part p22 that are arranged intersectingly. The first part p21 passes through the opening of the limiting groove p1, and the second part p22 is located inside the limiting groove p1. In the width direction of the limiting groove p1, the size of the second part p22 is larger than the size of the first part p21.

[0135] Specifically, both the first part p21 and the second part p22 are longitudinally arranged along the extension direction of the limiting groove p1. The width direction of the limiting groove p1 is approximately perpendicular to its depth direction and extension direction. The first part p21 passes through the opening of the limiting groove p1 and connects to the end plate 12 or the first baffle plate 61. The second part p22 is located inside the limiting groove p1.

[0136] Since the second part p22 is larger than the first part p21 in the width direction of the limiting groove p1, the second part p22 and the first part p21 are connected in a roughly T-shape or L-shape (corresponding to the roughly T-shaped or L-shaped cross-section of the limiting groove p1). Thus, the second part p22 cannot disengage from the limiting groove p1 along its opening, and the end plate 12 is more securely fitted to the first baffle plate 61.

[0137] In some embodiments, refer to Figure 21 The battery pack 100 includes a housing 70, which includes a surrounding beam 71 and a central beam 72. The surrounding beam 71 encloses a mounting space k3. The central beam 72 is located within the mounting space and divides the mounting space into multiple sub-spaces k31. Each sub-space k31 contains a battery cell assembly 10. A baffle assembly 60 is located between the second end face d2 and the central beam 72. The central beam 72 forms an exhaust space k4 with the heat exchange plate 20 at intervals in the first direction Z. A pressure relief channel t communicates with the exhaust space k4.

[0138] Specifically, two surrounding beams 71 are arranged at intervals in the parallel direction X of the cell assembly 10. The two ends of the two surrounding beams 71 in the second direction Y are connected to the inner wall of the housing 70. The surrounding beams 71 and the inner wall of the housing 70 together enclose the installation space k3.

[0139] The intermediate beam 72 divides the placement space k3 into multiple subspaces k31 to separate the individual cell groups 10 and improve the structural stability of the battery pack 100. The two ends of the intermediate beam 72 may be fixedly connected to the surrounding beam 71.

[0140] The heat exchange plate 20 exchanges heat with the battery cell assembly 10 in each sub-space k31 and covers the intermediate beam 72. An exhaust space k4 is formed between the intermediate beam 72 and the heat exchange plate 20, so that the flue gas discharged from the pressure relief channel t can be discharged outward from the exhaust space k4, making the exhaust smoother.

[0141] Furthermore, each surrounding beam 71 is positioned higher than the heat exchange surface S in the first direction Z. In practical applications, thermally conductive adhesive is poured into the placement space k3 formed by the surrounding beam 71. Since the surrounding beam 71 is higher than the first heat exchange surface S, it can be ensured that the thermally conductive adhesive will not overflow from the area where the battery pack 10 is located, avoiding waste of thermally conductive adhesive and further reducing the amount of thermally conductive adhesive used.

[0142] Furthermore, the electrical device provided in this application includes the battery pack 100 described in any of the above embodiments, and the battery pack 100 is used to provide electrical energy. This electrical device possesses the beneficial effects described in any of the above embodiments.

[0143] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0144] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A battery pack (100), characterized in that, include: A battery cell assembly (10) includes a plurality of battery cells (11) arranged side by side, all of the battery cells (11) having a heat exchange surface (S), and each of the battery cells (11) includes an electrode (11a) located on the heat exchange surface (S); The heat exchange plate (20) and the heat exchange surface (S) are spaced apart in a first direction (Z) that intersects with the parallel direction (X) of the battery cell assembly (10) to form a filling space (k1); A data acquisition component (30) is provided in the glue filling space (k1) and includes a data acquisition terminal (32) and a data acquisition circuit board (31). The data acquisition circuit board (31) extends along the parallel direction (X) and is connected to the electrode post (11a) via the data acquisition terminal (32) to acquire the status information of the battery cell assembly (10). An isolation component (40) is disposed in the filling space (k1) and at least obstructs the flow path of the thermally conductive adhesive in the filling space (k1) to the acquisition circuit board (31).

2. The battery pack (100) according to claim 1, characterized in that, The isolation assembly (40) includes a partition (41) and a barrier (42). The acquisition assembly (30) is supported on the partition (41). The partition (41) is insulated between the acquisition assembly (30) and the heat exchange surface (S). The adhesive blocking component (42) cooperates with the partition (41) to prevent the thermally conductive adhesive in the filling space (k1) from flowing to the acquisition circuit board (31).

3. The battery pack (100) according to claim 2, characterized in that, The partition (41) has an isolation groove (c1) that opens toward the heat exchange plate (20). The isolation groove (c1) extends along the parallel direction (X). The adhesive blocking member (42) includes a cover plate (42a) that covers the opening of the isolation groove (c1). The acquisition circuit board (31) and the acquisition terminal (32) are both located in the isolation groove (c1). The cover plate (42a) obstructs the flow path of the thermally conductive adhesive in the filling space (k1) toward the isolation groove (c1).

4. The battery pack (100) according to claim 3, characterized in that, The partition (41) has flanges (41a) at both ends of its opposite sides along the second direction (Y). The flanges (41a) are folded away from the heat exchange surface (S). Each flange (41a) includes a first side strip (a1) and a second side strip (a2) that are connected to each other. The first side strip (a1) forms the sidewall of the isolation groove (c1). The second side strips (a2) of the two flanges (41a) extend towards each other and form the opening of the isolation groove (c1) at intervals. The cover plate (42a) is inserted into the isolation groove (c1) and abuts against the second side strip (a2) to cooperate with the flanges (41a) and jointly obstruct the flow path of the thermally conductive adhesive in the filling space (k1) to the isolation groove (c1). The first direction (Z), the second direction (Y) and the parallel direction (X) intersect each other and are not coplanar. The battery cell assembly (10) includes end plates (12) located at both ends in the parallel direction (X), and the cover plate (42a) is fixedly connected to the end plates (12).

5. The battery pack (100) according to claim 2, characterized in that, The adhesive blocking component (42) includes an adhesive blocking strip (42b) disposed between the partition plate (41) and the heat exchange plate (20). The adhesive blocking strip (42b) protrudes from the heat exchange surface (S) in the first direction (Z) and abuts against the heat exchange plate (20). Two adhesive blocking strips (42b) are spaced apart along the second direction (Y) to form an adhesive blocking space (k2) together with the heat exchange plate (20). At least a portion of the acquisition circuit board (31) is located in the adhesive blocking space (k2). The first direction (Z), the second direction (Y), and the side-by-side direction (X) intersect each other but are not coplanar.

6. The battery pack (100) according to claim 5, characterized in that, The acquisition circuit board (31) has a first end face (d1) facing the heat exchange plate (20), and the adhesive resist strip (42b) is fixed on both sides of the first end face (d1) along the second direction (Y). The adhesive resist strip (42b), the first end face (d1), and the heat exchange plate (20) together form the adhesive resist space (k2); and / or, The adhesive barrier strip (42b) is configured as a deformable element that can be compressed and deformed in the first direction (Z).

7. The battery pack (100) according to claim 6, characterized in that, The partition plate (41) has two protruding spacers (41b) on the side opposite to the heat exchange surface (S). The two spacers (41b) are spaced apart along the second direction (Y). The acquisition circuit board (31) is located between the two spacers (41b). The adhesive strip (42b) is attached to the spacers (41b). Each spacer (41b) has a notch (b1) for the acquisition terminal (32) to pass through. In the first direction (Z), the adhesive barrier strip (42b) is positioned higher than the spacer strip (41b).

8. The battery pack (100) according to any one of claims 1-7, characterized in that, The battery cell assembly (10) includes an explosion-proof valve (11c), which is located on the second end face (d2) where the battery cell assembly (10) intersects with the heat exchange surface (S). The battery pack (100) includes a baffle assembly (60) having a pressure relief channel (t), and the explosion-proof valve (11c) is connected to the pressure relief channel (t).

9. The battery pack (100) according to claim 8, characterized in that, The adhesive baffle assembly (60) includes a first adhesive baffle plate (61) and a second adhesive baffle plate (62) that both extend longitudinally along the parallel direction (X). The first adhesive baffle plate (61) is located on the second end face (d2) and has an avoidance hole (h) to avoid the explosion-proof valve (11c). The second adhesive baffle plate (62) is assembled and connected to the first adhesive baffle plate (61), and the two together form the pressure relief channel (t). The avoidance hole (h) connects the explosion-proof valve (11c) and the pressure relief channel (t).

10. An electrical device, characterized in that, Includes a battery pack (100) as described in any one of claims 1-9, the battery pack (100) being used to provide electrical energy.

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