Battery

Abstract

The utility model discloses a battery. The battery comprises a shell part, a battery cell assembly and a heat absorption part, the shell part comprises a main body section and a user holding contact section, a containing cavity is formed in the shell part and extends to the user holding contact section along the main body section, and the cross sectional area of the main body section is larger than that of the user holding contact section in the direction from the main body section to the user holding contact section. The battery core assembly is arranged in the accommodating cavity; and the heat absorption part is at least arranged in the user holding contact section. The battery provided by the utility model solves the problem of low electric capacity of the battery caused by the problem that the palm of a human body is scalded by temperature rise during discharging of the battery in the prior art.

Description

Technical Field

[0001] The present application relates to the field of energy storage technology, and in particular, to a battery. Background Art

[0002] At present, cleaning appliances (vacuum cleaners, steam machines, floor scrubbers, etc.) all use secondary batteries as power devices. There are two ways to design batteries for cleaning appliances. In the first design, the battery pack is set at a position far away from the working parts of the cleaning appliances, that is, a separate design. In this design, the battery is placed alone in an area, which reduces the flexibility of the equipment, low space utilization, and increases the overall weight of the battery, which brings inconvenience to people operating the equipment. Another design is to place the battery inside the grip area of ​​the cleaning appliance, and use a shell on the outside of the battery pack to solve the problem of temperature rise during battery discharge and scalding the human palm. This design wastes a lot of space due to the use of a shell design, and loses a lot of battery capacity. In addition, the size of the handle shell is relatively regular, and the battery that can be inserted is relatively small, so the battery capacity can only be made relatively small, and the battery output power is also small. Utility Model Content

[0003] The main purpose of the present application is to provide a battery to at least solve the problem of low battery capacity caused by the temperature rise during battery discharge that causes burns to human palms in the prior art.

[0004] According to one aspect of the present application, a battery is provided, wherein the battery is used to power an external power-consuming device, comprising:

[0005] A shell portion, the shell portion comprising a main body section and a user grip contact section, the shell portion being provided with a receiving cavity, the receiving cavity extending from the main body section to the user grip contact section, and the cross-sectional area of ​​the main body section along the direction from the main body section to the user grip contact section being larger than the cross-sectional area of ​​the user grip contact section;

[0006] A battery cell assembly, wherein the battery cell assembly is arranged in the accommodating cavity;

[0007] A heat absorbing portion is at least arranged inside the user gripping contact section.

[0008] Furthermore, the heat absorption portion includes at least one phase change sheet, and the phase change sheet is arranged inside the user grip contact section and contacts the battery core assembly.

[0009] Furthermore, two opposite sides of the phase change sheet are respectively bonded to the inner wall surface of the user gripping contact section and the battery core assembly through adhesive layers.

[0010] Furthermore, the bonding layer between the phase change sheet and the battery core assembly includes a thermally conductive adhesive layer.

[0011] Furthermore, the phase change film includes a paraffin plastic phase change film.

[0012] Furthermore, the shell portion includes a first shell and a second shell, the first shell and the second shell are detachably connected, the shell portion has a connecting surface located at the connection between the first shell and the second shell and arranged toward the accommodating cavity, and the heat absorption portion is arranged between the connecting surface and the battery cell assembly.

[0013] Further, the accommodating cavity includes a first cavity section and a second cavity section connected to the first cavity section, the first cavity section is located in the main body section, and the second cavity section is located in the user grip contact section;

[0014] The battery cell assembly includes a first battery cell group and a second battery cell group, the first battery cell group is arranged in the first cavity section, the first battery cell group includes n battery cells, the second battery cell group is arranged in the second cavity section, the second battery cell group includes m battery cells; wherein the relationship between n and m satisfies: m≤n.

[0015] Furthermore, the width A of the user grip contact section satisfies the relationship: A≤52mm; and / or,

[0016] The height B of the user gripping contact section satisfies the relationship: B≤38mm; and / or,

[0017] The length C of the user grip contact section satisfies the relationship: 70mm≤C≤160mm.

[0018] Furthermore, an air outlet is provided on the outer peripheral surface of the main body section and / or the end surface of the user grip contact section away from the main body section, and the air outlet is communicated with the accommodating cavity.

[0019] Further, the main body section includes a first surface away from the user grip contact section, the user grip contact section includes a second surface away from the main body section, the air vents include a first air vent and a second air vent, at least one of the first air vents is provided on the first surface, and at least one of the second air vents is provided on the second surface; or,

[0020] The main body section includes a first surface away from the user grip contact section, the periphery of the main body section includes a third surface and a fourth surface arranged opposite to each other, the air vents include a first air vent, a third air vent and a fourth air vent, at least one of the first air vents is opened on the first surface, at least one third air vent is opened on the third surface, and at least one fourth air vent is opened on the fourth surface.

[0021] Further, the battery cell assembly includes a support seat, a first battery cell group and a second battery cell group, the support seat is provided with a first recessed portion and a second recessed portion, and the first recessed portion is located in the accommodating cavity in the main body section, the second recessed portion is located in the accommodating cavity in the user grip contact section, the first battery cell group is arranged in the first recessed portion, the second battery cell group is arranged in the second recessed portion, and the first battery cell group is electrically connected to the second battery cell group.

[0022] Furthermore, the battery cell assembly also includes a battery main control board, a first adapter board is connected to one end of the first battery cell group close to the second battery cell group, and a second adapter board is connected to one end of the second battery cell group close to the first battery cell group, and the first adapter board and the second adapter board are both connected to the battery main control board.

[0023] Furthermore, the battery cell assembly further includes a plurality of foams, and the plurality of foams are at least arranged between the battery cell assembly and the inner wall surface of the accommodating cavity.

[0024] Compared with the prior art, the battery of the present application is provided with a cell assembly in both the main body section and the accommodation cavity in the user grip contact section, thereby improving the space utilization rate of the battery and the overall capacity of the battery. At the same time, a heat absorbing part is provided inside the user grip contact section, which can absorb heat from the cell assembly to prevent the cell assembly in the user grip contact section from heating up and scalding the user's hand. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0026] Figure 1 This is a schematic diagram of the structure of the battery disclosed in this application at a first viewing angle;

[0027] Figure 2 A schematic diagram of the explosion structure of the battery disclosed in this application;

[0028] Figure 3 A schematic diagram of the structure of the battery disclosed in this application at a second viewing angle;

[0029] Figure 4 This is a schematic structural diagram of the battery disclosed in this application at a third viewing angle;

[0030] Figure 5 A schematic diagram of the exploded structure of the battery cell assembly disclosed in this application;

[0031] Figure 6 This is a schematic diagram of the structure of the support base disclosed in this application;

[0032] Figure 7 This is a schematic diagram of the explosion structure of the first type of battery disclosed in this application;

[0033] Figure 8 A schematic diagram of the explosion structure of the second type of battery disclosed in this application;

[0034] Fig. 9 This is a schematic structural diagram of the first adapter board disclosed in this application;

[0035] Fig.10 This is a schematic diagram of the structure of the second adapter board disclosed in this application.

[0036] The above drawings include the following reference numerals:

[0037] 10. Shell; 11. Main body; 12. User grip contact section; 13. Output interface; 14. Accommodation cavity; 15. Input interface; 20. Battery cell assembly; 21. Support seat; 22. First battery cell group; 23. Second battery cell group; 24. Battery main control board; 25. First adapter board; 26. Second adapter board; 27. Foam; 28. Electrical connection sheet; 30. Heat absorption part; 101. First shell; 102. Second shell; 111. First surface; 112. Third surface; 113. Fourth surface; 121. Second surface; 141. First cavity section; 142. Second cavity section; 211. First recessed portion; 212. Second recessed portion; 1111. First air vent; 1121. Third air vent; 1131. Fourth air vent; 1211. Second air vent. DETAILED DESCRIPTION

[0038] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0039] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0040] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0041] See also Figure 1 to Figure 2 As shown, according to an embodiment of the present application, a battery is provided, comprising: a shell 10, a battery cell assembly 20 and a heat absorption portion 30. The shell 10 comprises a main body section 11 and a user grip contact section 12, and a housing cavity 14 is provided in the shell 10, and the housing cavity 14 extends from the main body section 11 to the user grip contact section 12, and the cross-sectional area of ​​the main body section 11 along the direction from the main body section 11 to the user grip contact section 12 is greater than the cross-sectional area of ​​the user grip contact section 12. The battery cell assembly 20 is provided in the housing cavity 14. The heat absorption portion 30 is at least provided inside the user grip contact section 12.

[0042] Specifically, the main body section 11 of the battery is provided with an output interface 13 for connecting to an electrical device, and the user grip contact section 12 is for the operator to grip in order to control the electrical device. The cross-sectional area of ​​the main body section 11 is larger than the cross-sectional area of ​​the user grip contact section 12, that is, a battery cell with a larger capacity can be placed in the main body section 11, and a battery cell with a smaller capacity can be placed in the user grip contact section 12. This means that when the battery is working, the battery cell in the user grip contact section 12 will not heat up too much, so that the heat absorption part 30 can completely absorb the heat of the battery cell in the user grip contact section 12.

[0043] Compared with the prior art, the battery of this embodiment is provided with a cell assembly 20 in both the main body section 11 and the accommodation cavity 14 in the user grip contact section 12, thereby improving the space utilization rate of the battery and the overall capacity of the battery. At the same time, a heat absorption portion 30 is provided inside the user grip contact section 12, which can absorb heat from the cell assembly 20 to prevent the cell assembly 20 in the user grip contact section 12 from heating up and scalding the hands. At the same time, compared with the prior art in which the outer periphery of the outer shell 10 of the battery is covered with a gripping shell for the operator to grip, the user gripping contact section 12 of the outer shell 10 of the battery of this embodiment can be directly gripped by the user, further improving the overall space utilization rate of the battery.

[0044] Furthermore, the heat absorption part 30 includes at least one phase change sheet, which is arranged inside the user grip contact section 12 and in contact with the battery cell assembly 20. Specifically, when the battery is working, the battery cell assembly 20 generates heat, the phase change sheet absorbs the heat, and the material on the phase change sheet gradually changes from one phase to another, thereby preventing the heat from being transferred to the user grip contact section 12 and causing burns to the human hand. At the same time, when the battery is not working, the phase change sheet can gradually release heat, so that the material on the phase change sheet gradually changes to the original phase, thereby increasing the service life of the phase change sheet.

[0045] Furthermore, the two opposite sides of the phase change sheet are respectively bonded to the inner wall surface of the user gripping contact section 12 and the battery cell assembly 20 through adhesive layers. In this embodiment, the adhesive layer mainly plays a fixing role to prevent the phase change sheet from falling off when the battery moves and failing to absorb heat from the battery cell assembly 20.

[0046] In addition, the adhesive layer between the phase change sheet and the battery cell assembly 20 includes a thermally conductive adhesive layer. Specifically, the provision of the adhesive layer prevents the battery cell assembly 20 from directly contacting the phase change sheet, thereby reducing the heat transfer effect between the battery cell assembly 20 and the phase change sheet. In this embodiment, the adhesive layer between the phase change sheet and the battery cell assembly 20 is provided as a thermally conductive adhesive layer to improve the thermal conductivity of the adhesive layer. At the same time, the adhesive layer between the phase change sheet and the inner wall surface of the user grip contact section 12 can be provided as a double-sided adhesive layer, thereby reducing production costs.

[0047] Furthermore, the phase change sheet includes a paraffin plastic phase change sheet. In this embodiment, the phase change temperature of the paraffin plastic phase change sheet is relatively high, that is, the paraffin plastic phase change sheet needs to absorb more heat to undergo phase change, thereby preventing the heat from being transferred to the user's grip contact section 12 after the phase change sheet is completely phase changed, causing burns to the user's hands. At the same time, the phase change process of the paraffin plastic phase change sheet is reversible, which can increase the service life of the phase change sheet.

[0048] Furthermore, the shell portion 10 includes a first shell 101 and a second shell 102, which are detachably connected. The shell portion 10 has a connecting surface located at the connection between the first shell 101 and the second shell 102 and arranged toward the accommodating cavity 14, and the heat absorption portion 30 is arranged between the connecting surface and the battery cell assembly 20.

[0049] Specifically, the first shell 101 and the second shell 102 are detachably connected to facilitate maintenance of the battery. In this embodiment, the heat absorption part 30 includes two phase change sheets, which are respectively connected between the two connecting surfaces of the first shell 101 and the second shell 102 and the battery cell assembly 20 to evenly absorb heat from the battery cell assembly 20. In addition, phase change sheets can be set on both sides of the battery cell assembly 20 close to the inner wall surface of the first shell 101 and the inner wall surface of the battery cell assembly 20 close to the second shell 102, but in this embodiment, the phase change sheet is a paraffin plastic phase change sheet, which can absorb heat from the battery cell assembly 20 for a long time, so there is no need to set too many phase change sheets to avoid a large amount of heat emitted by the battery cell assembly 20 from being transferred to the user's grip contact section 12.

[0050] As attached Figure 5 and attached Figure 6 As shown, the accommodating cavity 14 includes a first cavity section 141 and a second cavity section 142 connected to the first cavity section 141. The first cavity section 141 is located in the main body section 11, and the second cavity section 142 is located in the user grip contact section 12. The battery cell assembly 20 includes a first battery cell group 22 and a second battery cell group 23. The first battery cell group 22 is arranged in the first cavity section 141, and the first battery cell group 22 includes n battery cells. The second battery cell group 23 is arranged in the second cavity section 142, and the second battery cell group 23 includes m battery cells; wherein n and m satisfy the relationship: m≤n.

[0051] Specifically, when m≤n, more cells are arranged in the first cavity section 141, and the heat emitted by the cells in the first cavity section 141 is relatively high when working. However, since the first cavity section 141 is far away from the user grip contact section 12, only a small amount of heat can be transferred to the user grip contact section 12, and it is difficult to cause the temperature of the user grip contact section 12 to rise sharply. However, fewer cells are arranged in the second cavity section 142, and the heat emitted by the cells in the second cavity section 142 is relatively low. Under the effect of heat absorption by the phase change sheet, the temperature of the user grip contact section 12 can prevent the user from scalding the hand. The structure of this embodiment can improve the space utilization of the battery on the one hand, and at the same time will not increase the temperature of the user grip contact section 12 too much, causing the hand to be scalded. Optionally, the number of the second cell group is 1 to 4 pcs, and the number of the first cell group is greater than 4 pcs. When the number of the first cell group and the number of the second cell group are within this range, the battery capacity of the battery can be increased, and the temperature of the user grip contact section 12 can be prevented from being too high. When m>n, there are two situations. One is that the number of cells in the first cell group 22 is too small, which will result in a small battery capacity. The other is that the number of cells in the second cell group 23 is too large, which will cause the temperature of the user holding the contact section 12 to be too high, thereby scalding the user's hand.

[0052] As attached Figure 3 To Attachment Figure 4As shown, the user grip contact section 12 is a rectangular parallelepiped. In order to improve the comfort of human hand holding, the width A of the user grip contact section 12 in this embodiment satisfies the relationship: A≤52mm, for example, it can be 36mm, 38mm, 40mm, 42mm, 44mm, 46mm, 48mm, 50mm and 52mm, which is convenient for human hand to grasp. Optionally, the height B of the user grip contact section 12 satisfies the relationship: B≤38mm, for example, it can be 26mm, 28mm, 30mm, 32mm, 34mm, 36mm and 38mm. When the width A of the user grip contact section 12 and the height B of the user grip contact section 12 are too large, the operator cannot control the battery with one hand, and the volume of the battery is increased, which is not conducive to portable use. Optionally, the length C of the user grip contact segment 12 satisfies the relationship: 70mm≤C≤160mm, for example, C can be 70mm, 80mm, 90mm, 100mm, 110mm, 120mm, 130mm, 140mm, 150mm and 160mm. When the length C of the user grip contact segment 12 is within this range, the length of the user grip contact segment 12 is close to the width of a human hand, which is convenient for a human hand to grasp. When C<70mm, the length of the user grip contact segment 12C is too small, and it is not convenient for a human hand to fully grasp; or when C>160mm, the length of the user grip contact segment 12 is too long, which increases the volume and manufacturing cost of the battery.

[0053] In some specific embodiments, an outer peripheral surface of the main body section 11 and / or an end surface of the user grip contact section 12 away from the main body section 11 is provided with an air outlet, and the air outlet is communicated with the accommodating cavity 14 .

[0054] It is worth mentioning that "air vents are provided on the outer circumferential surface of the main body section 11 and / or the end surface of the user grip contact section 12 away from the main body section 11" refers to one of the three situations: air vents are provided on the outer circumferential surface of the main body section 11, air vents are provided on the end surface of the user grip contact section 12 away from the main body section 11, and air vents are provided on both the outer circumferential surface of the main body section 11 and the end surface of the user grip contact section 12 away from the main body section 11. In this embodiment, the provision of air vents can improve the heat dissipation effect of the battery. Of course, the air vents also have specific effects depending on the specific electrical appliances connected.

[0055] As attached Figure 7 To Attachment Figure 8As shown, the main body section 11 includes a first surface 111 away from the user grip contact section 12, the user grip contact section 12 includes a second surface 121 away from the main body section 11, the air vents include a first air vent 1111 and a second air vent 1211, at least one first air vent 1111 is opened on the first surface 111, and at least one second air vent 1211 is opened on the second surface 121; or, the main body section 11 includes a first surface 111 away from the user grip contact section 12, the periphery of the main body section 11 includes a third surface 112 and a fourth surface 113 arranged opposite to each other, the air vents include a first air vent 1111, a third air vent 1121 and a fourth air vent 1131, at least one first air vent 1111 is opened on the first surface 111, at least one third air vent 1121 is opened on the third surface 112, and at least one fourth air vent 1131 is opened on the fourth surface 113.

[0056] Specifically, the battery of this embodiment includes a variety of different models, and the various different models are used to connect different electrical appliances. For example, in the first model, a plurality of first air vents 1111 are provided on the first surface 111, and a plurality of second air vents 1211 are provided on the second surface 121. The battery of the first model is often used for a hair dryer, that is, the hair dryer is connected to the first surface 111, and the air inlet of the hair dryer is connected to the first air vents 1111. When the hair dryer is working, the air passes through the second air vents 1211 on the second surface 121, enters the user grip contact section 12, and then passes through the main body section 11 and flows into the hair dryer from the first air vents 1111, and is blown out by the hair dryer. The setting of the first model, on the one hand, takes away the heat inside the user grip contact section 12 through the wind flow channel to reduce the temperature of the user grip contact section 12. On the other hand, the hot air taken away can be reused to improve the heat utilization rate of the hair dryer.

[0057] In addition, in the second type of battery, a plurality of first air vents 1111 are provided on the first surface 111, and a plurality of third air vents 1121 and a plurality of fourth air vents 1131 are provided on the third surface 112 and the fourth surface 113, respectively. The second type of battery is often used to be connected with components such as vacuum cleaners, that is, when the vacuum cleaner is working, the air outlet of the vacuum cleaner is connected with the first air vent 1111, and the wind flows into the interior of the main section 11 through the first air vent 1111, and then flows out through the third air vent 1121 and the fourth air vent 1131. The second type of arrangement can take away the heat generated by the battery cell assembly 20 in the main section 11, and will not cause the heat in the main section 11 to flow into the user grip contact section 12, causing the temperature of the user grip contact section 12 to rise.

[0058] In addition, the battery cell assembly 20 includes a support seat 21, a first battery cell group 22 and a second battery cell group 23. The support seat 21 is provided with a first recessed portion 211 and a second recessed portion 212, and the first recessed portion 211 is located in the accommodation cavity 14 in the main body section 11, and the second recessed portion 212 is located in the accommodation cavity 14 in the user grip contact section 12. The first battery cell group 22 is arranged in the first recessed portion 211, and the second battery cell group 23 is arranged in the second recessed portion 212, and the first battery cell group 22 is electrically connected to the second battery cell group 23. It is worth mentioning that in the second type of battery, the support seat 21 has air vents on one side relative to the first surface 111, the third surface 112 and the fourth surface 113.

[0059] Specifically, the shape of the support seat 21 is adapted to the accommodating cavity 14, and the support seat 21 is used to provide support for the battery cells to prevent the first battery cell group 22 or the second battery cell group 23 from moving in the accommodating cavity 14. The first battery cell group 22 and the second battery cell group 23 are electrically connected to ensure that the first battery cell group 22 and the second battery cell group 23 can work simultaneously.

[0060] As attached Figure 7 To Attachment Fig.10 As shown, the battery cell assembly 20 also includes a battery main control board 24, a first adapter board 25 is connected to one end of the first battery cell group 22 close to the second battery cell group 23, and a second adapter board 26 is connected to one end of the second battery cell group 23 close to the first battery cell group 22, and both the first adapter board 25 and the second adapter board 26 are connected to the battery main control board 24.

[0061] In a specific embodiment, the first adapter plate 25 and the second adapter plate 26 are respectively provided with raised areas, and the raised areas are set as the total positive and total negative pads of the battery cell group. After the first battery cell group 22 and the second battery cell group 23 are assembled on the support seat 21, the raised areas of the first adapter plate 25 and the second adapter plate 26 pass through the opening of the first recessed portion 211 of the support seat 21 and the opening of the second recessed portion 212, respectively. The first adapter plate 25 and the second adapter plate 26 are both provided with an electrical connection sheet 28, and the electrical connection sheet 28 is connected to the battery main control board 24. In this embodiment, the first adapter plate 25 and the second adapter plate 26 are both vertically connected to the battery main control board 24. The battery main control board 24 is used for control circuits and protection circuits. In this embodiment, the battery main control board 24 is a BMS main control board, and the electrical connection sheet 28 is made of metal, usually a copper sheet, a nickel sheet, or a copper sheet plated with nickel.

[0062] Furthermore, the battery cell assembly 20 also includes a plurality of foams 27, and the plurality of foams 27 are at least arranged between the battery cell assembly 20 and the inner wall surface of the accommodating chamber 14. Specifically, the first battery cell group 22 includes a plurality of first soft-pack battery cells, and the second battery cell group 23 includes a plurality of second soft-pack battery cells. Foams 27 are arranged between two adjacent first soft-pack battery cells or between two adjacent soft-pack battery cells to prevent the battery cells from squeezing each other when they expand, causing damage to the battery cells. Similarly, foams 27 are arranged between the first battery cell group 22 and the inner wall surface of the accommodating chamber 14, and between the second battery cell group 23 and the inner wall surface of the accommodating chamber 14. In addition, foams 27 are arranged between the support seat 21 and the first battery cell group 22, and between the support seat 21 and the second battery cell group 23, to prevent the support seat 21 from squeezing the battery cells.

[0063] Since the battery of this embodiment can be directly used as a handle, the handle structure of the terminal device can be reduced, thereby reducing the weight of the terminal device. In addition, the battery of this embodiment optimizes the size, reduces the volume of the battery, improves the grip experience of the handle, and is more ergonomic. At the same time, the battery of this embodiment makes full use of the battery space, improves the battery capacity and the battery life of the delayed connection device, and can support the maximum power output of the device. In addition, the temperature of the grip portion is optimized by setting the phase change sheet to avoid burns on the human palm. The battery of this embodiment is also provided with an input interface 15, which is provided on the outer peripheral surface of the user grip contact section 12, and the input interface 15 is connected to the battery main control board 24 for charging the battery. In addition, in this embodiment, the first shell 101, the second shell 102 and the support seat 21 are all made of plastic, and the battery cell is a soft-pack lithium-ion polymer battery cell, and the battery cell is packaged with an aluminum-plastic film to reduce the overall weight of the battery.

[0064] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0065] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0066] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A battery, characterized in that: include: A shell portion (10), the shell portion (10) comprising a main body section (11) and a user grip contact section (12), a receiving cavity (14) being arranged in the shell portion (10), the receiving cavity (14) extending along the main body section (11) to the user grip contact section (12), and along the direction from the main body section (11) to the user grip contact section (12), a cross-sectional area of ​​the main body section (11) is greater than a cross-sectional area of ​​the user grip contact section (12); A battery cell assembly (20), wherein the battery cell assembly (20) is arranged in the accommodating cavity (14); A heat absorbing portion (30), the heat absorbing portion (30) being arranged at least inside the user gripping contact section (12).

2. The battery according to claim 1, characterized in that The heat absorption portion (30) comprises at least one phase change sheet, which is arranged inside the user gripping contact section (12) and in contact with the battery core assembly (20).

3. The battery according to claim 2, characterized in that The opposite sides of the phase change sheet are respectively bonded to the inner wall surface of the user gripping contact section (12) and the battery core assembly (20) through bonding layers.

4. The battery according to claim 3, characterized in that The bonding layer between the phase change sheet and the battery core assembly (20) comprises a thermally conductive adhesive layer.

5. The battery according to claim 2, characterized in that The phase change film comprises a paraffin plastic phase change film.

6. The battery according to claim 1, characterized in that The shell portion (10) comprises a first shell (101) and a second shell (102), wherein the first shell (101) and the second shell (102) are detachably connected, and the shell portion (10) has a connection surface located at the connection between the first shell (101) and the second shell (102) and arranged toward the accommodating cavity (14), and the heat absorption portion (30) is arranged between the connection surface and the battery cell assembly (20).

7. The battery according to any one of claims 1 to 6, characterized in that The accommodating cavity (14) comprises a first cavity section (141) and a second cavity section (142) communicating with the first cavity section (141), the first cavity section (141) being located in the main body section (11), and the second cavity section (142) being located in the user grip contact section (12); The battery cell assembly (20) comprises a first battery cell group (22) and a second battery cell group (23), wherein the first battery cell group (22) is arranged in the first cavity section (141), and the first battery cell group (22) comprises n battery cells, and the second battery cell group (23) is arranged in the second cavity section (142), and the second battery cell group (23) comprises m battery cells; wherein n and m satisfy the relationship: m≤n.

8. The battery according to any one of claims 1 to 6, characterized in that The width A of the user grip contact section (12) satisfies the relationship: A≤52 mm; and / or, The height B of the user gripping contact section (12) satisfies the relationship: B≤38 mm; and / or, The length C of the user gripping contact section (12) satisfies the relationship: 70 mm ≤ C ≤ 160 mm.

9. The battery according to any one of claims 1 to 6, characterized in that An air outlet is provided on the outer peripheral surface of the main body section (11) and / or the end surface of the user grip contact section (12) away from the main body section (11), and the air outlet is connected to the accommodating cavity (14).

10. The battery according to claim 9, characterized in that The main body section (11) comprises a first surface (111) away from the user grip contact section (12), the user grip contact section (12) comprises a second surface (121) away from the main body section (11), the air vents comprise a first air vent (1111) and a second air vent (1211), at least one of the first air vents (1111) is provided on the first surface (111), and at least one of the second air vents (1211) is provided on the second surface (121); or, The main body section (11) includes a first surface (111) away from the user grip contact section (12); the periphery of the main body section (11) includes a third surface (112) and a fourth surface (113) arranged opposite to each other; the air vents include a first air vent (1111), a third air vent (1121) and a fourth air vent (1131); at least one of the first air vents (1111) is provided on the first surface (111), at least one of the third air vents (1121) is provided on the third surface (112), and at least one of the fourth air vents (1131) is provided on the fourth surface (113).

11. The battery according to any one of claims 1 to 6, characterized in that The battery cell assembly (20) comprises a support seat (21), a first battery cell group (22) and a second battery cell group (23); the support seat (21) is provided with a first recessed portion (211) and a second recessed portion (212); the first recessed portion (211) is located in the accommodating cavity (14) in the main body section (11); the second recessed portion (212) is located in the accommodating cavity (14) in the user grip contact section (12); the first battery cell group (22) is arranged in the first recessed portion (211); the second battery cell group (23) is arranged in the second recessed portion (212); and the first battery cell group (22) is electrically connected to the second battery cell group (23).

12. The battery according to claim 11, characterized in that The battery cell assembly (20) further comprises a battery main control board (24); one end of the first battery cell group (22) close to the second battery cell group (23) is connected to a first adapter board (25); one end of the second battery cell group (23) close to the first battery cell group (22) is connected to a second adapter board (26); and both the first adapter board (25) and the second adapter board (26) are connected to the battery main control board (24).

13. The battery according to any one of claims 1 to 6, characterized in that The battery cell assembly (20) further comprises a plurality of foams (27), wherein the plurality of foams (27) are at least arranged between the battery cell assembly (20) and the inner wall surface of the accommodating cavity (14).

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