Battery protection plate structure, battery and electric device

Abstract

The utility model relates to the technical field of batteries, and discloses a battery protection plate structure, a battery and a power utilization device, the battery protection plate structure has a first direction and a second direction which are intersected, the battery protection plate structure comprises a circuit board, devices and a plastic package body, the devices at least comprise a first device group and a second device group which are distributed at intervals along the first direction, and along the second direction, the first device group and the second device group are arranged at intervals. The thickness of the second device group is smaller than that of the first device group, one side of the plastic package body deviating from the circuit board is provided with a first recessed portion, and the first recessed portion is arranged corresponding to the second device group. According to the battery protection plate structure, the plastic package body area corresponding to the device with smaller thickness is thinned, namely, the thickness of the corresponding plastic package body is reduced, so that the overall weight of the battery protection plate structure is reduced while the three-proofing reliability of a battery product is maintained, and the defects caused by overweight of the battery protection plate structure are further reduced. In addition, the plastic package body is designed to be sunken, so that the surface area of the plastic package body can be increased, and the heat dissipation capability of the battery protection plate structure is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field, concretely relates to a battery protection board structure, battery and electric device. BACKGROUND

[0002] Battery protection board (Protection Circuit Module, abbreviated as PCM) is widely used in various electric devices powered by rechargeable batteries, such as mobile communication devices, electric vehicles, electric bicycles, electric tools, notebook computers, etc. Generally, the battery protection board is installed at the head of the battery, which directly relates to the safety and reliability of the battery.

[0003] At present, in the battery protection board structure, the devices mounted on the circuit board are plastic encapsulated for protection, and finally a cuboid plastic encapsulation structure is formed.

[0004] However, such plastic encapsulation will result in a relatively large weight of the battery protection board, and the weight of the battery will also increase, which is prone to damage the battery protection board when falling, resulting in failure of the battery protection board function, and in severe cases, it may even cause thermal failure of the battery, causing the battery to overheat and posing a risk of battery explosion. UTILITY MODEL CONTENTS

[0005] The utility model provides a kind of battery protection board structure, battery and electric device, to solve or improve the problem that plastic encapsulation battery protection board is relatively large in weight in relevant technology, and the weight of battery will also increase, it is prone to damage battery protection board when falling, resulting in failure of the battery protection board function, and in severe cases, it may even cause thermal failure of the battery, posing a risk of battery explosion.

[0006] In a first aspect, the utility model provides a kind of battery protection board structure, with intersecting first direction X and second direction Y, comprising:

[0007] Circuit board, along the first direction X extends;

[0008] Device, is set on the circuit board, the device second direction Y extends, the device at least includes first device group and second device group, the first device group and the second device group are spaced apart along the first direction X, and along the second direction Y, the thickness of the second device group is less than the thickness of the first device group;

[0009] Plastic encapsulation, is covered on the device, and is connected with the circuit board;

[0010] First recess, is set on the side of the plastic encapsulation away from the circuit board, the first recess along the second direction Y extends, the first recess is set corresponding the second device group.

[0011] In an alternative embodiment, the number of the second device groups is at least two, and a plurality of the second device groups are spaced apart along the first direction X, and the first recesses correspond to the second device groups one by one.

[0012] In an alternative embodiment, along the first direction X, a distance K1 between an end of the plastic package close to the first end of the circuit board and the first end of the circuit board is greater than or equal to 0 millimeter.

[0013] In an alternative embodiment, along the first direction X, a distance K2 between an end of the plastic package close to the second end of the circuit board and the second end of the circuit board is greater than or equal to 0 millimeter.

[0014] In an alternative embodiment, the plastic package comprises at least a first plastic package and a second plastic package, the first plastic package covers the first device group, the second plastic package covers the second device group,

[0015] along the second direction Y, a thickness of the second plastic package is less than a thickness of the first plastic package, so as to form the first recesses,

[0016] and along the first direction X, a first gap is provided between the first plastic package and the second plastic package.

[0017] In an alternative embodiment, the first device group comprises at least a first device and a second device, the first device and the second device are spaced apart along the first direction X, and along the second direction Y, a thickness of the first device is less than a thickness of the second device,

[0018] a second recess is provided on a side of the first plastic package away from the circuit board, the second recess extends along the second direction Y, and the second recess is provided corresponding to the first device.

[0019] In an alternative embodiment, a corner position of the first plastic package is provided with a rounded corner, and / or a corner position of the second plastic package is provided with a rounded corner.

[0020] In an alternative embodiment, the second device group comprises at least two third devices, and a plurality of the third devices are spaced apart along the first direction X,

[0021] the second plastic package comprises at least two second plastic units, a plurality of the second plastic units respectively correspond to cover a plurality of the third devices, and along the first direction X, a second gap is provided between two adjacent second plastic units.

[0022] In a second aspect, the utility model also provides a battery, including the battery protection board structure of any one of above.

[0023] In a third aspect, the utility model also provides a power consumption device, including the battery of above.

[0024] The battery protection board structure provided by the utility model reduces the overall weight of the battery protection board structure while maintaining the three-proof reliability of the battery product, thereby reducing the disadvantages caused by the excessive weight of the battery protection board structure. In addition, the sinking recess design for the plastic package body can also increase the surface area of the plastic package body and improve the heat dissipation capacity of the battery protection board structure. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0026] Figure 1 It is the battery protection board structure schematic diagram of the utility model embodiment one;

[0027] Figure 2 It is the battery protection board structure schematic diagram of the utility model embodiment two;

[0028] Figure 3 It is the battery protection board structure schematic diagram of the utility model embodiment three;

[0029] Figure 4 It is the battery protection board structure schematic diagram of the utility model embodiment four;

[0030] Figure 5 It is the battery protection board structure schematic diagram of the utility model embodiment five.

[0031] BRIEF DESCRIPTION OF DRAWINGS

[0032] 1, circuit board; 101, first end; 102, second end; 2, device; 201, first device group; 2011, first device; 2012, second device; 202, second device group; 2021, third device; 3, plastic package; 301, first plastic package; 3011, first plastic package monomer; 302, second plastic package; 3021, second plastic package monomer; 4, first recess; 5, first gap; 6, second recess; 7, round corner; 8, second gap; 9, resistance-capacitance device; 10, power device; 11, third gap. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0034] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0035] In the description of the present application, it should be noted that, unless otherwise specifically specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication inside two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "over" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. The first feature "under", "below" and "underneath" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0037] The battery protection plate structure, the battery and the electric device according to the embodiments of the present application are described below. Figures 1 to 5 , describes the battery protection plate structure, the battery and the electric device of the utility model embodiment.

[0038] According to the embodiments of the present application, in the first aspect, a battery protection plate structure is provided, the battery protection plate structure has a first direction X and a second direction Y intersecting, in the present embodiment, the first direction X is perpendicular to the second direction Y.

[0039] In the first embodiment of the present application, as shown in Figure 1 , the battery protection plate structure includes a circuit board 1, a device 2, and a plastic package 3. The circuit board 1 extends along the first direction X. The circuit board 1 is called a printed circuit board or a printed circuit board, its English full name is Printed Circuit Board, abbreviated as PCB, which is a support body and carrier for electrical connection of electronic components.

[0040] The device 2 is arranged on the circuit board 1, and the device 2 extends in the second direction Y. Specifically, the circuit board 1 can be single-sided or double-sided. For example, as shown in Figure 1 , the device 2 is installed on one side of the circuit board 1 by welding, pressure connection or the like. The device 2 at least includes a first device group 201 and a second device group 202, the first device group 201 and the second device group 202 are distributed along the first direction X, and along the second direction Y, the thickness of the second device group 202 is less than the thickness of the first device group 201.

[0041] The plastic package 3 is coated on the device 2, and the plastic package 3 is connected with the circuit board 1, so that the device 2 attached to the circuit board 1 is protected by plastic package. Further, as shown in Figure 1 , the side of the plastic package 3 away from the circuit board 1 is provided with a first recess 4, the first recess 4 extends along the second direction Y, and the first recess 4 is arranged corresponding to the second device group 202. It can be understood that, on the basis of ensuring the thickness of the plastic package 3 in the second device group 202 area, the sinking depth of the first recess 4 along the second direction Y can be determined according to the thickness difference between the first device group 201 and the second device group 202.

[0042] In this way, by thinning the region of the plastic package 3 corresponding to the second device group 202, that is, reducing the thickness of the plastic package 3 corresponding to the second device group 202, the overall weight of the battery protection plate structure is reduced while maintaining the three-proofing reliability of the battery product, thereby reducing the disadvantages caused by the excessive weight of the battery protection plate structure. In addition, the sinking and recessing design of the plastic package 3 can also increase the surface area of the plastic package 3 and improve the heat dissipation capacity of the battery protection plate structure, thereby prolonging the service life of the battery.

[0043] In some embodiments of the present application, as shown in Figure 1 The number of the second device group 202 is at least two, the plurality of second device groups 202 are distributed along the first direction X, and the first recessed portion 4 corresponds to the second device group 202 one by one. For example, as shown in Figure 1 The number of the second device group 202 is two, and the first device group 201 and the second device group 202 are alternately distributed along the first direction X, and the number of the first recessed portion 4 is two.

[0044] In this way, by sinking and thinning the region of the plastic package 3 corresponding to the second device group 202 at different positions of the circuit board 1, the use of plastic package glue can be further reduced, thereby further reducing the weight of the battery protection plate structure while ensuring effective protection of the plurality of second device groups 202. It should be noted that the number of the first device group 201 and the second device group 202 can be determined according to actual design requirements.

[0045] In some embodiments of the present application, as shown in Figure 1 Along the first direction X, the distance K1 between one end of the plastic package 3 close to the first end 101 of the circuit board 1 and the first end 101 of the circuit board 1 is greater than or equal to 0 millimeters. It can be understood that, as shown in Figure 1 In the first direction X, the size of the distance K1 depends on the distance between one end of the device 2 close to the first end 101 of the circuit board 1 and the first end 101 of the circuit board 1. For example, K1 can be 0 millimeters, 0.2 millimeters, 0.5 millimeters, or any value between any two values, which is only used as an example and is not limited.

[0046] In this way, by shortening the left end of the plastic package 3, the weight of the plastic package 3 can also be reduced, thereby reducing the overall weight of the battery protection plate structure.

[0047] In some embodiments of the present application, as shown in Figure 1 Along the first direction X, the distance K2 between one end of the plastic package 3 close to the second end 102 of the circuit board 1 and the second end 102 of the circuit board 1 is greater than or equal to 0 millimeters. It can be understood that, as shown inFigure 1 As shown, in the first direction X, the size of the interval K2 depends on the distance between one end of the device 2 close to the second end 102 of the circuit board 1 and the second end 102 of the circuit board 1. For example, K2 can be 0 millimeters, 0.2 millimeters, 0.5 millimeters, or any value between any two values, which is only exemplified herein and is not specifically limited.

[0048] In this way, by shortening the right end of the plastic package 3, the weight of the plastic package 3 can be further reduced, and the overall weight of the battery protection board structure is further reduced.

[0049] In the second embodiment of the utility model, as shown in Figure 2 As shown, the plastic package 3 at least includes a first plastic package 301 and a second plastic package 302, the first plastic package 301 is wrapped on the first device group 201, and the second plastic package 302 is wrapped on the second device group 202. Along the second direction Y, the thickness of the second plastic package 302 is less than the thickness of the first plastic package 301 to form the first recess 4. Moreover, along the first direction X, the first gap 5 is between the first plastic package 301 and the second plastic package 302. Specifically, in the first direction X, the first gap 5 is greater than or equal to 0.2 millimeters. For example, the first gap 5 can be 0.2 millimeters, 0.3 millimeters, 0.5 millimeters, 1 millimeter, or any value between any two values, which is only exemplified herein and is not specifically limited.

[0050] That is, the difference between the second embodiment and the first embodiment is that, along the first direction X, the plastic package 3 is designed as a discontinuous structure, and the local area between the first device group 201 and the second device group 202 is further designed as a sinking and thinning structure.

[0051] In this way, by separating the plastic package 3 into multiple independent unit structures, the weight of the plastic package 3 can be greatly reduced on the basis of ensuring the plastic package thickness around the device 2. It should be noted that the number of the first plastic package 301 and the second plastic package 302 depends on the number of the first device group 201 and the second device group 202, and the first gap 5 is between adjacent first plastic packages 301 and second plastic packages 302.

[0052] In the third embodiment of the utility model, as shown in Figure 3 As shown, the first device group 201 at least includes a first device 2011 and a second device 2012, the first device 2011 and the second device 2012 are distributed along the first direction X, and along the second direction Y, the thickness of the first device 2011 is less than the thickness of the second device 2012. It can be understood that along the second direction Y, the thickness of the second device group 202 is less than the thickness of the first device 2011.

[0053] Moreover, as shown in Figure 3As shown, the first plastic package 301 is provided with a second recess 6 on the side away from the circuit board 1, the second recess 6 extends along the second direction Y, and the second recess 6 corresponds to the first device 2011. That is, the difference between the third embodiment and the second embodiment is that the local area of the first device group 201 is further designed to be sunken and thinned. For example, as shown in Figure 3 As shown, the first device group 201 includes a plurality of resistance-capacitance devices 9 such as resistors, and along the second direction Y, the thickness of at least one of the resistance-capacitance devices 9 is relatively small, and the region of the first plastic package 301 corresponding to the resistance-capacitance device 9 with a relatively small thickness is designed to be sunken and thinned, that is, the second recess 6 is formed.

[0054] In this way, by thinning the plastic package thickness of different regions of the first device group 201, the local thickness of the first plastic package 301 is further refined, and the overall weight of the battery protection plate structure is further reduced. It should be noted that the number of second recesses 6 depends on the number of first devices 2011, and the sunken depth of the second recess 6 along the second direction Y depends on the thickness difference between the second device 2012 and the first device 2011.

[0055] In the fourth embodiment of the utility model, as shown in Figure 4 As shown, the corner position of the first plastic package 301 is provided with a round corner 7, and / or the corner position of the second plastic package 302 is provided with a round corner 7. Preferably, the corner position of the first plastic package 301 and the second plastic package 302 is provided with a round corner 7. It should be noted that the size of the round corner 7 depends on the distance between the side of the plastic package 3 away from the circuit board 1 and the side of the device 2 away from the circuit board 1 along the second direction Y.

[0056] That is, the difference between the fourth embodiment and the third embodiment is that the corner positions of the plastic package 3 are designed to be round. In this way, by rounding the corner positions of the first plastic package 301 and the second plastic package 302, on the one hand, the weight of the plastic package 3 can be further reduced, and on the other hand, the appearance can be improved, which helps to reduce damage caused by sharp corners during manufacturing or use, and improves the overall performance and durability of the plastic package 3.

[0057] In the fifth embodiment of the utility model, as shown in Figure 5 As shown, the second device group 202 includes at least two third devices 2021, and the plurality of third devices 2021 are distributed along the first direction X. The second plastic package 302 includes at least two second plastic package units 3021, and the plurality of second plastic package units 3021 are respectively wrapped on the plurality of third devices 2021, and along the first direction X, the second gap 8 is provided between the adjacent two second plastic package units 3021. It should be noted that the number of third devices 2021 can be determined according to actual design requirements.

[0058] That is, the difference between Embodiment Five and Embodiment Four is that the second plastic package 302 is designed as a discontinuous structure in the first direction X, and the second plastic package 302 is further designed as a local area sinking and thinning structure. For example, as shown in Figure 5 The third device 2021 is a power device 10 such as a transistor, a diode, etc. In order to avoid mutual influence between the power devices 10, the spacing between part of the power devices 10 is large in the first direction X. Based on this, the second plastic package 3021 is used to individually cover the power device 10, and the second gap 8 is formed between adjacent two second plastic packages 3021. Specifically, the second gap 8 is greater than or equal to 0.2 millimeters in the first direction X. For example, the second gap 8 can be 0.2 millimeters, 0.3 millimeters, 0.5 millimeters, 1 millimeter, or any value between any two values, which is only used as an example and is not specifically limited.

[0059] In this way, by splitting the second plastic package 302 into multiple independent single structures, the weight of the second plastic package 302 can be further reduced on the basis of ensuring the thickness of the plastic package around the third device 2021. It should be noted that the number of second plastic packages 3021 depends on the number of third devices 2021, and adjacent two second plastic packages 3021 have a second gap 8 therebetween.

[0060] Of course, in other embodiments, as shown in Figure 5 The first plastic package 301 can also include at least two power devices 10, and the plurality of power devices 10 are spaced apart in the first direction X. The first plastic package 301 includes at least two first plastic packages 3011, and the plurality of first plastic packages 3011 respectively cover the plurality of power devices 10, and adjacent two first plastic packages 3011 have a third gap 11 therebetween in the first direction X. Specifically, the third gap 11 is greater than or equal to 0.2 millimeters in the first direction X. For example, the third gap 11 can be 0.2 millimeters, 0.3 millimeters, 0.5 millimeters, 1 millimeter, or any value between any two values, which is only used as an example and is not specifically limited. Thus, the first plastic package 301 is split into multiple independent single structures, and the power device 10 is further designed as a local area sinking and thinning structure. It should be noted that the number of power devices 10 can be specifically determined according to actual design requirements.

[0061] In addition, when the single plastic sealing area or the multiple plastic sealing areas of the battery protection plate structure product are designed to be sunken and thinned, there are mainly two forming processes: one is to adjust the upper film of the original plastic sealing mold, so that the upper film has a structure opposite to the required plastic sealing shape, and the single plate plastic sealing is formed during injection molding; the other scheme is that the original plastic sealing mold is unchanged, and after injection molding, laser ablation is performed on the part that does not need to be plastic sealed by using laser, so as to form the required sunken and thinned area.

[0062] According to the embodiments of the utility model, the second aspect further provides a battery including the battery protection plate structure in each of the above embodiments. In this way, by thinning the plastic sealing body 3 area corresponding to the second device group 202 with smaller thickness, that is, reducing the thickness of the corresponding plastic sealing body 3, the overall weight of the battery protection plate structure is reduced while maintaining the three-proofing reliability of the battery product, thereby reducing the disadvantages caused by the excessive weight of the battery protection plate structure and improving the service life of the battery. In addition, the sunken recess design of the plastic sealing body 3 can also increase the surface area of the plastic sealing body 3 and improve the heat dissipation capacity of the battery protection plate structure. The derivation process of the beneficial effects is similar to the above-mentioned battery protection plate structure, so it will not be repeated here.

[0063] According to the embodiments of the utility model, the third aspect further provides a power consumption device including but not limited to a mobile communication device, an electric vehicle, an electric bicycle, an electric tool, a notebook computer, etc. The power consumption device includes the battery in the above-mentioned embodiments. In this way, by thinning the plastic sealing body 3 area corresponding to the second device group 202 with smaller thickness, that is, reducing the thickness of the corresponding plastic sealing body 3, the overall weight of the battery protection plate structure is reduced while maintaining the three-proofing reliability of the battery product, thereby reducing the disadvantages caused by the excessive weight of the battery protection plate structure and improving the service life of the battery. In addition, the sunken recess design of the plastic sealing body 3 can also increase the surface area of the plastic sealing body 3 and improve the heat dissipation capacity of the battery protection plate structure. The derivation process of the beneficial effects is similar to the above-mentioned battery protection plate structure, so it will not be repeated here.

[0064] Although the embodiments of the utility model are described in combination with the drawings, various modifications and variations can be made by those skilled in the art without departing from the spirit and scope of the utility model, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A battery protection plate structure having a first direction (X) and a second direction (Y) intersecting, characterized by, The application relates to a circuit board (1) extending along a first direction (X); a device (2) arranged on the circuit board (1), the device (2) extending along a second direction (Y), the device (2) comprising at least a first device group (201) and a second device group (202), the first device group (201) and the second device group (202) being spaced apart along the first direction (X) and along the second direction (Y), the second device group (202) having a thickness smaller than that of the first device group (201); a plastic package (3) covering the device (2) and connected to the circuit board (1); and a first recess (4) arranged on a side of the plastic package (3) facing away from the circuit board (1), the first recess (4) extending along the second direction (Y), the first recess (4) corresponding to the second device group (202). The number of the second device groups (202) is at least two, and a plurality of the second device groups (202) are spaced apart along the first direction (X), and the first recess (4) corresponds to the second device group (202) one by one. Along the first direction (X), the distance K1 between one end of the plastic package (3) close to the first end (101) of the circuit board (1) and the first end (101) of the circuit board (1) is greater than or equal to 0 mm. Along the first direction (X), the distance K2 between one end of the plastic package (3) close to the second end (102) of the circuit board (1) and the second end (102) of the circuit board (1) is greater than or equal to 0 mm. The plastic package (3) comprises at least a first plastic package (301) and a second plastic package (302), the first plastic package (301) covering the first device group (201), the second plastic package (302) covering the second device group (202), 2. The battery protection plate structure of claim 1, wherein Along the second direction (Y), the thickness of the second plastic package (302) is smaller than that of the first plastic package (301) to form the first recess (4), 3. The battery protection plate structure of claim 1, wherein and along the first direction (X), the first plastic package (301) and the second plastic package (302) have a first gap (5) therebetween.

4. The battery protection plate structure of claim 1, wherein The first device group (201) comprises at least a first device (2011) and a second device (2012), the first device (2011) and the second device (2012) being spaced apart along the first direction (X) and along the second direction (Y), the thickness of the first device (2011) being smaller than that of the second device (2012), 5. The battery protection plate structure according to any one of claims 1 to 4, characterized in that, The side of the first plastic package (301) facing away from the circuit board (1) is provided with a second recess (6) extending along the second direction (Y), the second recess (6) corresponding to the first device (2011). The corner position of the first plastic package (301) is provided with a rounded corner (7), and / or the corner position of the second plastic package (302) is provided with a rounded corner (7). ​ 6. The battery protection plate structure of claim 5, wherein ​ ​ 7. The battery protection plate structure of claim 5, wherein ​ 8. The battery protection plate structure of claim 5, wherein, The second device group (202) comprises at least two third devices (2021), and a plurality of the third devices (2021) are spaced apart along the first direction (X), The second plastic package (302) comprises at least two second plastic package units (3021), a plurality of the second plastic package units (3021) respectively correspond to encapsulating a plurality of the third devices (2021), and adjacent two of the second plastic package units (3021) have a second gap (8) along the first direction (X).

9. A battery, characterized by A battery protection plate structure as claimed in any one of claims 1 to 8.

10. An electrical device, characterized by A battery as claimed in claim 9.

Images