Battery fixing plate, battery pack and electric equipment

Abstract

The invention relates to the technical field of battery assembling and manufacturing, in particular to a battery fixing plate, a battery pack and electric equipment. The battery fixing plate comprises a plate body, the plate body is provided with a profiling groove and a discharge groove, the profiling groove is semi-closed to contain a battery, and the discharge groove is used for being communicated with the profiling groove so as to be correspondingly communicated with an anti-explosion valve of the battery. The battery fixing plate is provided with the profiling groove, the profiling groove is used for accommodating the battery, and the discharge groove is communicated with the anti-explosion valve of the battery, so that the anti-explosion valve of the battery can be normally opened to eject high-pressure and high-heat gas through the discharge groove when abnormal conditions that the pressure in the battery is sharply increased and exceeds a safety threshold value and the like occur; and then the air is discharged out of the shell through a pressure release valve on the battery pack, so that the safety and the reliability of the battery pack are improved.

Description

Technical Field

[0001] The present application relates to the technical field of battery assembly and manufacturing, and in particular to a battery fixing plate, a battery pack and an electrical device. Background Art

[0002] At present, when assembling and manufacturing a battery pack, multiple batteries are usually connected and placed in a shell, and then potting glue is added to the shell to fix the batteries in the shell, and finally the upper cover, pressure relief valve and other components are assembled to form a battery pack. The use of potting glue requires that the battery and the shell are fully fixed, otherwise when the battery pack vibrates or falls, the connecting pieces or welding positions between the batteries in the battery pack are prone to breakage.

[0003] However, the explosion-proof valve on the battery is easily blocked by the potting glue. When the pressure inside the battery increases sharply and exceeds the safety threshold or other abnormal conditions occur, the explosion-proof valve cannot be opened, and there is a safety problem of explosion of the battery pack. Summary of the invention

[0004] Based on this, the present application provides a battery fixing plate, a battery pack and electrical equipment to solve the safety problem that the explosion-proof valve is blocked by glue filling, resulting in the explosion-proof valve being unable to open and the battery pack exploding.

[0005] On the one hand, the present application provides a battery fixing plate, including a plate body, on which a contoured groove and a drainage groove are provided. The contoured groove is semi-closed to accommodate the battery, and the drainage groove is used to communicate with the contoured groove to correspond to the explosion-proof valve of the battery.

[0006] In a possible implementation, the contoured groove has a communication port, and the communication port is suitable for facing the explosion-proof valve of the battery to discharge the excrement of the battery to the outside.

[0007] In a possible implementation, the drainage groove is arranged on the side wall of the profiling groove, and one end of the drainage groove extends toward the groove bottom of the profiling groove, and the other end extends out of the profiling groove.

[0008] In a possible implementation, the adjacent side walls of the two profiling grooves are connected, the drainage groove is arranged on the side wall, and the two sides are respectively connected to the two profiling grooves, one end of the drainage groove extends to the bottom of the profiling groove, and the other end extends outside the profiling groove.

[0009] In a possible implementation, the drainage trough is a hollow columnar structure provided on the plate body.

[0010] In a possible implementation, a plurality of profiling grooves are provided, and the drainage groove is located between adjacent profiling grooves and is communicated with at least two profiling grooves respectively.

[0011] In a possible implementation, the drainage grooves correspond to the contoured grooves one by one and are communicated with the corresponding contoured grooves.

[0012] In a possible implementation, along the opening direction of the contoured groove, the length of the drainage groove is L1, the height of the battery is L2, and L1 and L2 satisfy: 1 / 2L2<L1≤L2.

[0013] In one possible implementation, the drainage groove cooperates with the battery accommodated in the contoured groove to form a drainage channel extending outward from the side wall of the contoured groove, and along the connecting direction of the drainage channel, the cross-sectional area of ​​the drainage channel ranges from 10 square millimeters to 100 square millimeters.

[0014] In a possible implementation, the contoured groove includes a fixed groove and an explosion-proof groove, the fixed groove and the explosion-proof groove are interconnected, the fixed groove is used to accommodate a battery, and the battery end surface completely covers the explosion-proof groove, and the communication port of the explosion-proof groove is suitable for facing the explosion-proof valve of the battery.

[0015] In a possible implementation, the explosion-proof groove and the fixing groove are arranged along the groove depth direction of the contoured groove, and the explosion-proof groove is located at a position of the fixing groove away from the battery.

[0016] In a possible implementation, there is a gap between the bottom wall of the contoured groove and the battery received in the contoured groove.

[0017] In one possible implementation, the width of the interval ranges from 3 mm to 5 mm.

[0018] In a possible implementation, there is a gap between the side wall of the contoured groove and the battery received in the contoured groove.

[0019] In a possible implementation, the width of the gap ranges from 0.1 mm to 0.2 mm.

[0020] On the other hand, the present application provides a battery pack, comprising:

[0021] A housing, wherein a receiving cavity is provided in the housing;

[0022] A battery fixing plate, which is arranged in the accommodating cavity and is the battery fixing plate mentioned above;

[0023] The battery is arranged in the contoured groove, and the explosion-proof valve of the battery is located in the contoured groove.

[0024] In a possible implementation, the battery pack further includes foam glue, which is disposed in the accommodating cavity, and the height of the foam glue is greater than the top surface of the battery fixing plate and less than the height of the top of the drainage groove.

[0025] In a possible implementation, the battery pack further includes an upper cover, which is disposed on the shell and is used to seal the accommodating cavity. The upper cover is provided with a pressure relief valve.

[0026] On the other hand, the present application provides an electrical device including the above-mentioned battery pack.

[0027] The battery fixing plate, battery pack and electrical equipment provided by the present application are provided with a contoured groove on the battery fixing plate to accommodate the battery, and a drainage groove is provided on the plate body, the drainage groove is connected to the explosion-proof valve of the battery. When an abnormal situation such as a sharp increase in pressure inside the battery exceeding the safety threshold occurs, the explosion-proof valve of the battery can be opened normally to eject the high-pressure and high-temperature gas through the drainage groove, and then discharged to the outside of the shell through the pressure relief valve on the battery pack, thereby improving the safety and reliability of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 A schematic diagram of the structure of a battery fixing plate provided in an embodiment of the present application;

[0030] Figure 2 A schematic diagram of a partially exploded structure of a battery pack provided in an embodiment of the present application;

[0031] Figure 3 for Figure 2 A schematic diagram of the structure of the battery fixing plate and the battery in the battery pack shown;

[0032] Figure 4 for Figure 2 Schematic diagram of the structure of the battery in the battery pack shown.

[0033] Description of reference numerals:

[0034] 100-battery fixing plate; 10-plate body; 20-profile groove; 21-fixing groove; 22-explosion-proof groove; 30-smoke exhaust part; 40-exhaust groove; 200-battery; 201-explosion-proof valve; 300-battery pack; 301-shell; 302-accommodating chamber; 303-upper cover; 304-pressure relief valve; 305-protective plate; 306-connecting piece; 307-fixed panel. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme in the embodiment of the present application will be described in more detail below in conjunction with the drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals throughout represent the same or similar parts or parts with the same or similar functions. The described embodiments are part of the embodiments of the present application, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application. The embodiments of the present application are described in detail below in conjunction with the drawings.

[0036] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are orientations or positional relationships based on the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0038] The terms "first", "second" and "third" (if any) in the specification and claims of this application and the above drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0039] In addition, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product, or display comprising a series of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to such process, method, product, or display.

[0040] At present, when assembling and manufacturing common battery packs, multiple batteries are usually placed on a fixed bottom plate, and then a fixed panel, connecting plate, protective plate, etc. are assembled to connect multiple batteries, and then placed in a shell. Then, potting glue is added to the shell to fix the battery in the shell, and finally the upper cover, pressure relief valve and other components are assembled to form a battery pack. The use of potting glue requires that the battery and the shell are fully fixed, otherwise when the battery pack vibrates or falls, the connecting piece or welding position between the batteries in the battery pack is prone to breakage.

[0041] However, the explosion-proof valve at the bottom of the battery is easily blocked by the potting glue. When the pressure inside the battery increases sharply and exceeds the safety threshold or other abnormal conditions occur, the explosion-proof valve cannot be opened, and there is a safety problem of explosion of the battery pack.

[0042] After repeated thinking and verification, the inventor found that usually the explosion-proof valve on the battery is located at the bottom of the battery. If the battery fixing plate used to fix the battery in the battery pack is designed, a groove with an opening facing upward and a closed bottom is opened on it, the battery is assembled therein from above, the groove is closed, and the explosion-proof valve at the bottom of the battery is located in the closed groove, the problem of glue blocking the explosion-proof valve during glue filling can be avoided; an upwardly extending channel can also be established on the battery fixing plate to connect the grooves so that the gas ejected from the explosion-proof valve can be discharged upward along the channel, and then discharged to the outside through the pressure relief valve on the battery pack, thereby improving the safety of the battery pack; foam glue can also be used, and the volume of the foam glue increases after foaming to reduce the glue filling volume, thereby avoiding the problem of glue flowing into the groove through the assembly gap in the initial state, and the volume of the foam glue increases after foaming, thereby increasing its height in the shell, bonding and fixing the battery in the shell to the shell, and improving the reliability of the battery.

[0043] In view of this, the present application provides a battery fixing plate for fixing batteries, the battery fixing plate comprising a plate body, the plate body being provided with a contoured groove and a drainage groove, the contoured groove being semi-closed to accommodate the battery, and the drainage groove being used to communicate with the contoured groove so as to correspond to the explosion-proof valve of the battery.

[0044] By arranging a contoured groove on the battery fixing plate to accommodate the battery, and arranging a discharge groove on the plate body, the discharge groove is connected to the explosion-proof valve of the battery. When an abnormal situation such as a sharp increase in pressure inside the battery exceeding the safety threshold occurs, the explosion-proof valve of the battery can be opened normally to eject the high-pressure and high-temperature gas through the discharge groove, and then discharged to the outside of the shell through the pressure relief valve on the battery pack, thereby improving the safety and reliability of the battery pack.

[0045] The contents of the present application will be described in detail below in conjunction with the accompanying drawings so that those skilled in the art can understand the contents of the present application more clearly and in detail.

[0046] Figure 1A schematic diagram of the structure of a battery fixing plate provided in an embodiment of the present application. Figure 2 A schematic diagram of a partial exploded structure of a battery pack provided in an embodiment of the present application. Figure 3 for Figure 2 A schematic diagram of the structure of the battery fixing plate and the battery in the battery pack shown. Figure 4 for Figure 2 Schematic diagram of the structure of the battery in the battery pack shown.

[0047] like Figure 1 and Figure 2 As shown, the battery fixing plate 100 provided in the embodiment of the present application is used in the battery pack 300 to fix the battery 200. The battery fixing plate 100 includes a plate body 10 for placing the battery 200.

[0048] Optionally, the shape of the plate body 10 is the same as the cross-section of the battery pack 300 , so that it is convenient to place the battery 200 into the housing 301 of the battery pack 300 through the plate body 10 .

[0049] In a possible implementation, the battery pack 300 is a cuboid, and the plate body 10 is a rectangle with the same cross-section as the cuboid.

[0050] The plate body 10 is provided with a profiling groove 20. The profiling groove 20 is opened on the top surface of the plate body 10. The profiling groove 20 is used to accommodate the battery 200, so as to fix the battery 200 on the plate body 10.

[0051] The profiling groove 20 is semi-enclosed, that is, the profiling groove 20 is a groove with a closed bottom and an open top. The bottom of the battery 200 is accommodated in the profiling groove 20, so that the top of the profiling groove 20 is closed to prevent glue from flowing into the profiling groove 20 during glue filling.

[0052] like Figure 4 As shown, the bottom of the battery 200 is provided with an explosion-proof valve 201. When the battery 200 is accommodated in the contoured groove 20, the explosion-proof valve 201 is located in the contoured groove 20, that is, the contoured groove 20 has a communication port, and the communication port faces the explosion-proof valve 201 of the battery 200 to discharge the excrement of the battery 200 outward.

[0053] The explosion-proof valve 201 is arranged in the profiling groove 20 , and the profiling groove 20 matches the bottom of the battery 200 , which can prevent the explosion-proof valve 201 from being blocked by glue during glue filling, thereby ensuring the normal use of the explosion-proof valve 201 .

[0054] In a possible implementation, a plurality of contoured grooves 20 are provided on the plate body 10 , so as to fix a plurality of batteries 200 on the battery fixing plate 100 .

[0055] The number of the contoured grooves 20 corresponds to the number of the batteries 200 .

[0056] Optionally, a plurality of contoured grooves 20 are arranged in an array on the plate body 10 , thereby fully utilizing the space of the plate body 10 .

[0057] In a possible implementation, the contoured groove 20 includes a fixed groove 21 and an explosion-proof groove 22. The fixed groove 21 and the explosion-proof groove 22 are connected to each other. The fixed groove 21 is used to accommodate the battery 200, and the end surface of the battery 200 completely covers the explosion-proof groove 22. The communication port of the explosion-proof groove 22 is suitable for facing the explosion-proof valve 201 of the battery 200.

[0058] The explosion-proof groove 22 can be closed by making the end face of the battery 200 completely cover the explosion-proof groove 22, so that the explosion-proof valve 201 of the battery 200 facing the explosion-proof groove 22 will not be blocked or covered by glue during glue filling.

[0059] In a possible implementation, the profiling groove 20 is a stepped hole, the explosion-proof groove 22 and the fixed groove 21 are arranged along the groove depth direction of the profiling groove 20, and the explosion-proof groove 22 is arranged at a position of the fixed groove 21 away from the battery 200, that is, at the bottom wall of the fixed groove 21. The aperture of the explosion-proof groove 22 is smaller than the aperture of the fixed groove 21.

[0060] The battery 200 is arranged on the step of the stepped hole, that is, the battery 200 is accommodated in the fixing groove 21, and the bottom of the battery 200 faces the explosion-proof groove 22, so that the explosion-proof valve 201 is located in the explosion-proof groove 22. The bottom of the battery 200 covers the explosion-proof groove 22, thereby sealing the top of the explosion-proof groove 22, preventing glue from flowing into the explosion-proof groove 22 during glue filling, and blocking the explosion-proof valve 201 located in the explosion-proof groove 22, thereby ensuring the normal use of the explosion-proof valve 201.

[0061] In a possible implementation, when the battery 200 is disposed in the contoured groove 20 , there is a gap between the bottom wall of the contoured groove 20 and the battery 200 accommodated in the contoured groove 20 , and the width of the gap ranges from 3 mm to 5 mm.

[0062] In a possible implementation, the space between the bottom wall of the contoured groove 20 and the battery 200 is the explosion-proof groove 22 , and the width of the space is the depth of the explosion-proof groove 22 .

[0063] In a possible implementation, when the battery 200 is disposed in the contoured groove 20 , there is a gap between the side wall of the contoured groove 20 and the battery 200 accommodated in the contoured groove 20 , and the width of the gap ranges from 0.1 mm to 0.2 mm.

[0064] The setting of the interval reserves a space for the explosion-proof valve 201 at the bottom of the battery 200 to open. If the interval is too small, the bottom wall of the contoured groove 20 will block the explosion-proof valve 201, causing the explosion-proof valve 201 to fail.

[0065] In a possible implementation, there is a gap between the side wall of the contoured groove 20 and the battery 200 , that is, the aperture of the fixing groove 21 is larger than the diameter of the battery 200 , and the width of the gap is half of the difference between the aperture of the fixing groove 21 and the diameter of the battery 200 .

[0066] In a possible implementation, the battery 200 is a cylindrical battery, and the fixing groove 21 and the explosion-proof groove 22 are both circular grooves.

[0067] In a possible implementation, the battery 200 is a cube, such as a laminated battery, and the corresponding fixing groove 21 may be a corresponding rectangle.

[0068] Optionally, the explosion-proof groove 22 may also be configured to have other shapes as long as it can accommodate the explosion-proof valve 201 at the bottom of the battery 200 .

[0069] In a possible implementation, a drainage groove 40 is further provided on the plate body 10 . The drainage groove 40 is communicated with the contoured groove 20 , so as to be correspondingly communicated with the explosion-proof valve 201 of the battery 200 .

[0070] When the pressure inside the battery 200 increases sharply and exceeds the safety threshold, the explosion-proof valve 201 at the bottom of the battery 200 will eject high-pressure and high-temperature gas. The configuration of the contoured groove 20 allows the ejected gas to be first discharged into the corresponding contoured groove 20, then discharged through the discharge groove 40 connected to the contoured groove 20, and finally discharged to the outside of the battery pack 300 through the pressure relief valve 304 in the battery pack 300.

[0071] The drain tank 40 can also discharge electrolyte, contents and other substances in the battery 200 .

[0072] Optionally, the drain groove 40 is connected to both the fixing groove 21 and the explosion-proof groove 22 .

[0073] In a possible implementation, the drainage groove 40 is provided on the side wall of the profiling groove 20, and one end extends toward the groove bottom of the profiling groove 20, and the other end extends outward from the profiling groove 20. That is, the drainage groove 40 is a groove extending upward from the side wall of the profiling groove 20 of the plate body 10. When the battery 200 is accommodated in the profiling groove 20, the side wall of the battery 200 closes one side of the drainage groove 40, so that the drainage groove 40 forms an outwardly extending drainage channel, and the bottom of the drainage channel is connected to the profiling groove 20, and the top connecting port is connected to the internal space of the battery pack 300.

[0074] In a possible implementation, the battery fixing plate 100 further includes a smoke exhaust portion 30 . The smoke exhaust portion 30 is disposed on the plate body 10 and extends upward. The exhaust trough 40 is disposed on the smoke exhaust portion 30 .

[0075] Optionally, the smoke exhaust portion 30 is a portion of the side wall of the fixing groove 21 and is extended in a direction away from the plate body 10 . The exhaust groove 40 is disposed on the side wall of the fixing groove 21 and the smoke exhaust portion 30 .

[0076] In a possible implementation, the drainage groove 40 is located between adjacent contour grooves 20 , and the drainage groove 40 is communicated with the adjacent contour grooves 20 , respectively.

[0077] Optionally, a drainage groove 40 is provided between two adjacent profiling grooves 20 , and the drainage groove 40 is communicated with the two profiling grooves 20 respectively.

[0078] The side walls opposite to each other between the two profiling grooves 20 extend outwards to form a smoke exhaust portion 30 located between the two profiling grooves 20. The smoke exhaust portion 30 is provided with an upwardly extending discharge groove 40, and two batteries 200 are respectively accommodated in one profiling groove 20, and the side walls of the two batteries 200 respectively close one side of the discharge groove 40, thereby forming an upwardly extending discharge channel, and the bottom of the discharge channel is respectively connected to the two profiling grooves 20.

[0079] In other possible implementations, the drainage groove 40 is located between adjacent contoured grooves 20 , and is communicated with at least two contoured grooves 20 , such as two, three or four contoured grooves 20 .

[0080] In a possible implementation, the drainage grooves 40 correspond to the contour grooves 20 one by one, that is, one contour groove 20 corresponds to one drainage groove 40 , and the drainage groove 40 is connected to the corresponding contour groove 20 .

[0081] Every two batteries 200 share one drainage channel, or each battery 200 uses one drainage channel separately, so that heat spread can be avoided.

[0082] In a possible implementation, the drainage groove 40 is generally in the shape of a hollow strip. The strip-shaped drainage groove 40 is formed by slotting the side wall of the profiling groove 20 and extending upward. For example, the adjacent side walls of two adjacent profiling grooves 20 are connected to each other, and the drainage groove 40 is arranged on the side wall. In this case, the drainage groove is in the shape of a hollow strip, and its two side openings are respectively connected to the two profiling grooves 20. One end of the drainage groove 40 extends to the bottom of the profiling groove 20, and the other end extends outside the profiling groove 20. When in use, the openings on both sides of the drainage groove 40 are respectively closed by the corresponding batteries 200, thereby forming an upwardly extending drainage channel.

[0083] In a possible implementation, the drainage groove 40 is a groove separately arranged on the plate body 10, such as a hollow columnar structure, and its bottom is connected to the corresponding profiling groove 20. For example, if it is arranged between two profiling grooves 20, the two profiling grooves 20 are respectively connected to the bottom of the drainage groove 40; if it is arranged between three profiling grooves 20, the three profiling grooves 20 are respectively connected to the bottom of the drainage groove 40; if it is arranged between four profiling grooves 20, the four profiling grooves 20 are respectively connected to the bottom of the drainage groove 40, and so on.

[0084] Optionally, the location, method and number of the drain troughs 40 can be designed according to actual needs.

[0085] In one possible implementation, along the opening direction of the contoured groove 20, that is, along the thickness direction of the plate body 10, the length of the discharge groove 40 is L1, that is, the sum of the depth of the fixing groove 21 and the length of the smoke exhaust portion 30, and the height of the battery 200 is L2, and L1 and L2 satisfy: 1 / 2L2<L1≤L2.

[0086] The length of the drainage groove 40 is higher than half the height of the battery 200 to prevent glue from flowing into the drainage groove 40, and lower than the height of the battery 200 to prevent the battery fixing plate 100 from being higher than the battery 200 mounted thereon after assembly, thereby reducing unnecessary height loss.

[0087] In a possible implementation, along the communication direction of the drainage channel, the cross-sectional area of ​​the drainage channel ranges from 10 square millimeters to 100 square millimeters.

[0088] By setting the opening depth and width of the drainage groove 40 , that is, setting the area of ​​the drainage groove 40 along the opening direction, the high-temperature and high-heat gas discharged from the explosion-proof valve 201 can be discharged smoothly without affecting the structural strength of the battery fixing plate 100 .

[0089] In a possible implementation, the plate body 10 is further provided with weight-reducing holes, which are used to reduce the weight of the battery pack 300 . The weight-reducing holes can also improve the heat dissipation effect of the battery pack 300 .

[0090] The battery fixing plate 100 provided in the embodiment of the present application is provided with a contoured groove 20 , which is used to accommodate the battery 200 , and the contoured groove 20 faces the explosion-proof valve 201 of the battery 200 .

[0091] By providing a contoured groove 20 on the battery fixing plate 100, accommodating the battery 200 with the contoured groove 20, and accommodating the explosion-proof valve 201 of the battery 200 in the contoured groove 20, it is prevented that the explosion-proof valve 201 is blocked by glue during glue filling. When the pressure inside the battery 200 increases sharply and exceeds the safety threshold, the explosion-proof valve 201 of the battery 200 can be opened normally to spray high-pressure and high-temperature gas into the contoured groove 20, and then discharged to the outside of the shell 301 through the pressure relief valve 304 on the battery pack 300, thereby improving the safety and reliability of the battery pack 300.

[0092] In addition, the embodiment of the present application further provides a battery pack 300, including a housing 301, the above-mentioned battery fixing plate 100 and a battery 200. The housing 301 is provided with a receiving cavity 302. The battery fixing plate 100 and the battery 200 are respectively arranged in the receiving cavity 302. The battery 200 is arranged in the contoured groove 20 of the battery fixing plate 100, and the explosion-proof valve 201 of the battery 200 is located in the contoured groove 20.

[0093] In a possible implementation, the battery pack 300 further includes foam glue, and the foam glue is disposed in the accommodating cavity 302 .

[0094] The initial state of foaming glue is liquid and the final state is foam.

[0095] After foaming, the volume of the foam glue will increase. Since the foam glue is arranged in the accommodating cavity 302, the height in the shell 301 will be greatly increased, and the battery 200, the battery fixing plate 100 and the side wall of the accommodating cavity 302 can be fully adhered to each other.

[0096] In the housing 301 , the top surface of the plate body 10 of the battery fixing plate 100 is higher than the liquid level of the foaming glue in the initial state.

[0097] By setting the height of the foam glue, it is possible to prevent the liquid glue from passing through the assembly gap between the battery 200 and the contoured groove 20 , flowing into the contoured groove 20 , and blocking the explosion-proof valve 201 at the bottom of the battery 200 .

[0098] The height of the foamed glue is greater than the top surface of the battery fixing plate 100 and less than the top height of the drain groove 40 , that is, in the housing 301 , the top surface of the smoke exhaust portion 30 disposed on the plate body 10 is higher than the height of the foamed glue.

[0099] By setting the height of the smoke exhaust part 30 , it is possible to prevent the foam glue from blocking the discharge groove 40 provided on the smoke exhaust part 30 after foaming, thereby blocking the discharge channel for exhausting gas.

[0100] The foamed glue cannot flow back into the contoured groove 20 and the drainage groove 40 through the assembly gap; ultimately, the battery 200, the battery fixing plate 100 and the side wall of the accommodating cavity 302 can be fully adhered to each other, and at the same time, the pressure relief valve 304 and the drainage channel on the battery pack 300 will not be blocked, thereby solving the safety problem of the battery 200 and fixing it reliably.

[0101] In a possible implementation, the battery pack 300 further includes an upper cover 303. The upper cover 303 is disposed on the housing 301. The upper cover 303 is used to seal the accommodating cavity 302, thereby sealing the battery in the housing 301. A pressure relief valve 304 is disposed on the upper cover 303.

[0102] In a possible implementation, the battery pack 300 further includes a protective plate 305, a connecting plate 306 and a fixing panel 307. The protective plate 305 is disposed on the top of the battery 200 to protect the battery. The connecting plate 306 is connected to the multiple batteries 200 respectively, so as to connect the batteries 200 in series or in parallel. The fixing panel 307 is used to cooperate with the battery fixing plate 100 to fix the multiple batteries 200.

[0103] In a possible implementation, the battery pack 300 further includes a battery management system (BMS), which is used to monitor and manage the charging and discharging status of the battery 200 .

[0104] In a possible implementation, the battery pack 300 further includes a temperature sensor, which is electrically connected to the battery management system. The temperature sensor is used to monitor the temperature of the battery 200 and trigger an alarm when the temperature exceeds a preset value.

[0105] During assembly, firstly, a certain amount of foam glue is poured into the accommodating cavity 302, and then the battery fixing plate 100 is placed, ensuring that the top surface of the plate body 10 of the battery fixing plate 100 is higher than the liquid level of the foam glue; then the batteries 200 are placed in the contoured grooves 20 of the battery fixing plate 100 in turn, and the fixing panel 307 is assembled to fix multiple batteries 200; the connecting piece 306 is connected to the battery 200 by welding or the like; the protective plate 305 is connected, and finally the upper cover 303 with the pressure relief valve 304 is assembled, and after the foam glue is foamed, the battery 200, the battery fixing plate 100 and the side wall of the accommodating cavity 302 are fully adhered to each other to form a battery pack 300.

[0106] In addition, the embodiment of the present application also provides an electric device, including the above-mentioned battery pack. The electric device also includes an electric device. The battery pack is used to provide electric energy to the electric device.

[0107] The electrical equipment in the embodiments of the present application may be a vehicle, for example, a vehicle may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. Accordingly, the electrical device may be a driving mechanism of the vehicle or a control system of the vehicle.

[0108] In addition, the electrical equipment may also be other energy storage devices, such as mobile phones, portable devices, laptop computers, electric toys, electric tools, ships and spacecraft, etc., among which the spacecraft may include airplanes, rockets, space shuttles or spacecraft.

[0109] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery fixing plate, characterized in that: The invention comprises a plate body (10), wherein the plate body (10) is provided with a profiling groove (20) and a drainage groove (40), wherein the profiling groove (20) is semi-enclosed to accommodate a battery (200), and the drainage groove (40) is used to communicate with the profiling groove (20) so as to be correspondingly connected with an explosion-proof valve (201) of the battery (200).

2. The battery fixing plate according to claim 1, characterized in that: The contoured groove (20) has a communication port, and the communication port is suitable for facing the explosion-proof valve (201) of the battery (200) to discharge the excrement of the battery to the outside.

3. The battery fixing plate according to claim 1, characterized in that: The drainage groove (40) is arranged on the side wall of the profiling groove (20), and one end of the drainage groove extends toward the groove bottom of the profiling groove (20), and the other end of the drainage groove extends out of the profiling groove (20).

4. The battery fixing plate according to claim 1, characterized in that: The adjacent side walls of the two profiling grooves (20) are connected, the drainage groove (40) is arranged on the side wall, and the two sides are respectively connected with the two profiling grooves (20), one end of the drainage groove (40) extends to the groove bottom of the profiling groove (20), and the other end extends outside the profiling groove (20).

5. The battery fixing plate according to claim 1, characterized in that: The drainage trough (40) is a hollow columnar structure provided on the plate body (10).

6. The battery fixing plate according to any one of claims 1 to 5, characterized in that: A plurality of the profiling grooves (20) are provided, and the discharge groove (40) is located between adjacent profiling grooves (20) and is respectively connected to at least two of the profiling grooves (20).

7. The battery fixing plate according to any one of claims 1 to 5, characterized in that: The drainage grooves (40) correspond to the contour grooves (20) one by one and are communicated with the corresponding contour grooves (20).

8. The battery fixing plate according to any one of claims 1 to 5, characterized in that: Along the opening direction of the contoured groove (20), the length of the discharge groove (40) is L1, the height of the battery (200) is L2, and L1 and L2 satisfy: 1 / 2L2<L1≤L2.

9. The battery fixing plate according to any one of claims 1 to 5, characterized in that: The drainage groove (40) cooperates with the battery (200) accommodated in the contoured groove (20) to form a drainage channel extending outward from the side wall of the contoured groove (20); along the connecting direction of the drainage channel, the cross-sectional area of ​​the drainage channel ranges from 10 square millimeters to 100 square millimeters.

10. The battery fixing plate according to any one of claims 1 to 5, characterized in that: The contoured groove (20) comprises a fixed groove (21) and an explosion-proof groove (22); the fixed groove (21) and the explosion-proof groove (22) are communicated with each other; the fixed groove (21) is used to accommodate the battery (200) and the end surface of the battery (200) completely covers the explosion-proof groove (22); and the communication port of the explosion-proof groove (22) is suitable for facing the explosion-proof valve (201) of the battery (200).

11. The battery fixing plate according to claim 10, characterized in that: The explosion-proof groove (22) and the fixing groove (21) are arranged along the groove depth direction of the contoured groove, and the explosion-proof groove (22) is located at a position of the fixing groove (21) away from the battery (200).

12. The battery fixing plate according to any one of claims 1 to 5, characterized in that: There is a gap between the bottom wall of the contoured groove (20) and the battery (200) accommodated in the contoured groove (20).

13. The battery fixing plate according to claim 12, characterized in that: The width of the interval is in the range of 3mm-5mm.

14. The battery fixing plate according to any one of claims 1 to 5, characterized in that: There is a gap between the side wall of the contoured groove (20) and the battery (200) accommodated in the contoured groove (20).

15. The battery fixing plate according to claim 14, characterized in that: The width of the gap is in the range of 0.1 mm to 0.2 mm.

16. A battery pack, characterized in that: include: A housing (301), wherein a receiving cavity (302) is provided in the housing (301); A battery fixing plate (100), the battery fixing plate (100) being arranged in the accommodating cavity (302), the battery fixing plate (100) being the battery fixing plate according to any one of claims 1 to 15; A battery (200) is arranged in the contoured groove (20), and an explosion-proof valve (201) of the battery (200) is located in the contoured groove (20).

17. The battery pack according to claim 16, characterized in that: The battery pack (300) further comprises foam glue, which is arranged in the accommodating cavity (302), and the height of the foam glue is greater than the top surface of the battery fixing plate (100) and less than the height of the top of the drainage groove (40).

18. The battery pack according to claim 16, characterized in that: The battery pack (300) further comprises an upper cover (303), wherein the upper cover (303) is arranged on the shell (301), the upper cover (303) is used to seal the accommodating cavity (302), and the upper cover (303) is provided with a pressure relief valve (304).

19. An electrical equipment, characterized in that: Comprising a battery pack (300) as claimed in any one of claims 16 to 18.

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