Battery, battery module and electric equipment

Abstract

The utility model provides a battery, a battery module and electric equipment, and relates to the technical field of batteries, the battery comprises a first shell, a second shell, a cover body, a partition plate and a battery, the second shell is arranged in the first shell, and one part of the second shell is connected with the inner wall surface of the first shell; the partition plate is arranged in the first shell and divides the second cavity into a first liquid cooling channel and a second liquid cooling channel, the first liquid cooling channel is provided with a first liquid conveying opening, the second liquid cooling channel is provided with a second liquid conveying opening, a second end, away from the first end, of the partition plate is provided with a communication opening, and the battery is arranged in the first cavity. According to the battery, the battery module and the electric equipment provided by the utility model, liquid cooling can be carried out on the battery, and cooling liquid flows through a liquid cooling flow channel formed by the first liquid cooling channel and the second liquid cooling channel and can cover the whole surface of the battery, so that the liquid cooling effect on the battery is further improved; and the balance of the maximum capacity performance and better liquid cooling of the battery is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to a battery, a battery module and an electrical device. Background Art

[0002] Battery thermal management can solve the problem of thermal dissipation or thermal runaway caused by the battery operating at too high or too low a temperature, thereby improving the overall performance of the battery.

[0003] In the related art, the battery liquid cooling method usually uses a liquid cooling plate to integrate multiple batteries for liquid cooling and heat dissipation. There is easily a gap in the connection between the liquid cooling plate and the battery, which prevents the battery from completely contacting the liquid cooling plate, thereby affecting the liquid cooling effect. In addition, this battery liquid cooling method has problems such as low mechanical strength of soft-pack batteries and difficulty in designing liquid cooling channels when applied to soft-pack batteries. It cannot be changed according to the actual layout requirements of the battery and has poor applicability. Utility Model Content

[0004] The purpose of the utility model is to provide a battery, a battery module and an electrical device, which can perform liquid cooling on the battery, improve the liquid cooling effect on the battery cell, and achieve a balance between a larger capacity performance and a better liquid cooling effect of the battery.

[0005] The first aspect of the utility model provides a battery, comprising:

[0006] a first shell;

[0007] A second shell is arranged inside the first shell along a first direction, and a portion of the second shell is connected to an inner wall surface of the first shell, and a gap is formed between the remaining portion of the second shell and the first shell to form a liquid cooling channel;

[0008] A battery cell, wherein the battery cell is disposed in the second shell;

[0009] A partition is provided in the liquid cooling channel along the second direction and separates the liquid cooling channel into a first liquid cooling channel and a second liquid cooling channel, the first liquid cooling channel is provided with a first infusion port, the second liquid cooling channel is provided with a second infusion port, the first infusion port and the second infusion port are both located at the same end of the first shell, and the partition is provided with a connecting port at a position away from the first infusion port or the second infusion port, and the first liquid cooling channel is connected with the second liquid cooling channel through the connecting port.

[0010] In a possible embodiment of the present invention, both the first shell and the second shell are cylindrical structures, and the central axis of the first shell does not coincide with the central axis of the second shell.

[0011] In a possible embodiment of the present invention, the cross-sectional area of ​​the first liquid cooling channel gradually decreases in a direction from the partition plate to a connection position between the first shell and the second shell;

[0012] The cross-sectional area of ​​the second liquid cooling channel gradually decreases in a direction from the partition plate to a connection position between the first shell and the second shell.

[0013] In a possible embodiment of the present invention, the first shell is a square structure, the second shell is a cylindrical structure, and a portion of the second shell is tangent to the inner wall surface of the first shell.

[0014] In a possible embodiment of the present invention, the volume of the first liquid cooling channel is equal to the volume of the second liquid cooling channel, and the first liquid cooling channel and the second liquid cooling channel are symmetrically arranged.

[0015] In a possible embodiment of the present invention, the sum of the cross-sectional area of ​​the first liquid-cooling channel and the cross-sectional area of ​​the second liquid-cooling channel is S1, and the cross-sectional area S2 of the battery cell satisfies: 0.2S2≤S1≤0.5S2.

[0016] In a possible embodiment of the present invention, the battery cell includes a plurality of sub-battery cells, the plurality of sub-battery cells are sequentially connected in series and packaged, and the sub-battery cells are wound soft-pack battery cells.

[0017] A second aspect of the present invention provides a battery module, the battery module comprising the battery described in any one of the above embodiments, wherein the battery is provided in plurality and distributed in a display manner, and the battery module further comprises:

[0018] A connecting component, wherein the first liquid cooling channels of two adjacent batteries or the second liquid cooling channels of two adjacent batteries are connected through the connecting component,

[0019] And / or the first liquid-cooling channel and the second liquid-cooling channel of two adjacent batteries are connected through the connecting component.

[0020] In a possible embodiment of the present invention, the connecting component includes a connecting tube and a connecting piece, and the connecting tube is connected to the first infusion port and the second infusion port respectively through the connecting piece.

[0021] A third aspect of the present invention provides an electrical device, which includes: a battery as described in any one of the above embodiments, or a battery module as described in any one of the above embodiments.

[0022] The beneficial effects of the embodiments of the utility model include:

[0023] The battery provided by the utility model can perform liquid cooling on the battery core, and a second shell is provided for installing the battery core, and a first liquid cooling channel and a second liquid cooling channel are formed to cover the battery core, and the infusion ports of the first liquid cooling channel and the second liquid cooling channel are located on the same side, and the liquid cooling flow channel formed by the cooling liquid flowing through the first liquid cooling channel and the second liquid cooling channel can cover the entire area of ​​the battery, and the connecting port is provided at the second end of the partition away from the first end to ensure that the cooling liquid flows through the first liquid cooling channel and then flows into the second liquid cooling channel, thereby improving the liquid cooling effect on the battery; the second shell is abutted against the inner wall surface of the first shell, so that the cross-sectional area of ​​the second shell for installing the battery core is larger, and a battery with a larger volume capacity can be placed, so that the battery core has a larger capacity size, and under the premise of ensuring the battery performance, a balance between a larger capacity performance and a better liquid cooling effect is achieved.

[0024] The battery module provided by the embodiment of the utility model includes the above-mentioned battery, wherein a plurality of batteries are arranged and distributed in a display manner, and the battery module integrates and installs a plurality of batteries, which is beneficial to continuous heat exchange of the coolant and improves the liquid cooling and heat dissipation effect of the battery module.

[0025] The electric device provided by the embodiment of the utility model includes the above-mentioned battery or the above-mentioned battery module, and cools and dissipates the heat of the battery or battery module in the electric device through a liquid cooling channel, thereby reducing the temperature of the electric device during use and increasing the service life of the electric device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A schematic diagram of the three-dimensional structure of a battery provided in some embodiments of the present utility model;

[0028] Figure 2 A schematic diagram of the three-dimensional structure of a battery provided in some embodiments of the present utility model from another angle;

[0029] Figure 3 A cross-sectional view of a battery provided in some embodiments of the present invention Figure 1 ;

[0030] Figure 4 A cross-sectional view of another battery provided in some embodiments of the present invention Figure 2 ;

[0031] Figure 5 The cross-sectional view of the battery provided in some embodiments of the present invention is shown in FIG. Figure 3 ;

[0032] Figure 6 A schematic diagram of the three-dimensional structure of a battery module provided in some embodiments of the present utility model;

[0033] Figure 7 A schematic diagram of liquid cooling channels in series of battery modules provided in some embodiments of the present utility model;

[0034] Figure 8 Schematic diagram of parallel connection of liquid cooling channels of battery modules provided in some embodiments of the present invention.

[0035] Description of main component symbols;

[0036] 100-battery; 110-first shell; 120-second shell; 130-cover; 140-partition; 141-connecting port; 150-first liquid cooling channel; 160-second liquid cooling channel; 170-battery cell; 171-sub-battery cell; 200-battery module; 210-connecting assembly; 211-connecting pipe; 212-connecting piece; X-first direction; Y-second direction. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0040] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0041] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0042] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0044] Please refer to Figure 1 and Figure 2 An embodiment of the present application provides a battery 100 , which includes a first shell 110 , a second shell 120 , a battery cell 170 and a partition 140 .

[0045] It should be noted that if Figures 2 to 6 As shown, the first direction X is taken as the length direction of the battery 100, and the second direction Y is taken as the width direction of the separator 140 of the battery 100, wherein the second direction Y is perpendicular to the first direction X. It can be understood that the above definition is only for the convenience of understanding the relative position relationship of the battery 100, and should not be understood as a limitation to the present application.

[0046] Specifically, combined Figures 1 to 3As shown, the second shell 120 is arranged in the first shell 110 along the first direction X, and a part of the second shell 120 is connected to the inner wall surface of the first shell 110, and a gap is provided between the remaining part of the second shell 120 and the first shell 110 to form a liquid cooling channel; the battery cell 170 is arranged in the second shell 120, and the second shell 120 is provided for installing the battery cell 170, and heat is exchanged with the battery cell 170 through the coolant in the liquid cooling channel, so as to achieve the purpose of liquid cooling the battery cell 170.

[0047] In this embodiment, please refer to Figure 3 , the partition 140 is arranged in the liquid cooling channel along the second direction Y and separates the liquid cooling channel into a first liquid cooling channel 150 and a second liquid cooling channel 160, the first liquid cooling channel 150 is provided with a first infusion port, the second liquid cooling channel 160 is provided with a second infusion port, the first infusion port and the second infusion port are both located at the same end of the first shell 110, and the partition 140 is provided with a connecting port 141 at a position away from the first infusion port or the second infusion port, the first liquid cooling channel 150 is connected with the second liquid cooling channel 160 through the connecting port 141, forming the first liquid cooling channel 150 and the second liquid cooling channel 160 can be covered on the battery cell 170, the infusion ports of the first liquid cooling channel 150 and the second liquid cooling channel 160 are located on the same side, accordingly, as Figure 1 As shown, the liquid cooling channel formed by the coolant flowing through the first liquid cooling channel 150 and the second liquid cooling channel 160 can cover the entire area of ​​the battery 100, and the connecting port 141 is arranged at the second end of the partition 140 away from the first end to ensure that the coolant flows through the first liquid cooling channel 150 and then flows into the second liquid cooling channel 160, thereby improving the liquid cooling effect on the battery 100; the second shell 120 abuts against the inner wall surface of the first shell 110, so that the cross-sectional area of ​​the second shell 120 for installing the battery cell 170 is larger, and the battery cell 170 with a larger volume capacity can be placed, so that the battery cell 170 has a larger capacity size.

[0048] It can be understood that the cover 130 is also included. When the cover 130 is covered on the first shell 110, the first shell 110 and the second shell 120 are both hollow closed shells. The second shell 120 is a battery compartment for placing the battery cell 170. The battery compartment is located in the first shell 110. The gap between the first shell 110 and the second shell 120 forms a liquid cooling channel. The coolant in the liquid cooling channel exchanges heat with the battery cell 170 in the battery compartment. Figure 1 As shown, the cooling liquid can flow from the first infusion port into the first liquid cooling channel 150, flow through the connecting port 141 through the second liquid cooling channel 160 and flow out through the second infusion port, or the cooling liquid can flow from the second infusion port into the second liquid cooling channel 160, flow through the connecting port 141 through the first liquid cooling channel 150 and flow out through the first infusion port, which is not limited here.

[0049] Alternatively, if Figure 3 As shown, the first shell 110 and the second shell 120 are both cylindrical structures, and the central axis of the first shell 110 does not coincide with the central axis of the second shell 120. Accordingly, when the second shell 120 of the cylindrical structure is arranged in the first shell 110 of the cylindrical structure along the first direction X, the central axis of the second shell 120 of the cylindrical structure and the central axis of the first shell 110 of the cylindrical structure are not collinear, which is an eccentric design, so that the cross-sectional area of ​​the second shell 120 is larger, and a battery cell 170 with a larger volume capacity can be placed, while ensuring that the liquid cooling channel has sufficient volume, so as to achieve a balance between the volume capacity of the battery cell 170 and the volume of the liquid cooling channel. Exemplarily, the cross-sectional diameter of the first shell 110 is L, and the cross-sectional diameter of the second shell 120 is l, satisfying l<L, the connection position where the first shell 110 and the second shell 120 are connected is located at the lowest point of the first shell 110, and the batteries 100 are arranged in a display manner along the second direction Y, and the connection position is located at the lowest point of each battery 100.

[0050] Furthermore, the cross-sectional area of ​​the first liquid cooling channel 150 gradually decreases in the direction of the connection position of the first shell 110 and the second shell 120 along the partition 140; the cross-sectional area of ​​the second liquid cooling channel 160 gradually decreases in the direction of the connection position of the first shell 110 and the second shell 120 along the partition 140. In other words, the spacing of the liquid cooling channels at the position where the partition 140 is set is the largest, and the liquid cooling channels are separated into the first liquid cooling channel 150 and the second liquid cooling channel 160 by the partition 140, and at the same time, there is enough cross-sectional area for setting the first infusion port and the second infusion port, so as to avoid the cross-sectional area of ​​the first infusion port and the second infusion port being too small and the liquid flow being too small, which affects the liquid cooling effect, and ensures that the coolant has enough flow and flow rate when flowing in and out. Exemplarily, the second shell 120 is inscribed in the first shell 110.

[0051] It can be understood that the second shell 120 is a cylindrical hollow structure, so that the cylindrical battery cell 170 can be placed in the second shell 120. The second shell 120 is in contact with the battery cell 170 for heat conduction, and the purpose of liquid cooling the battery cell 170 is achieved through the first liquid cooling channel 150 and the second liquid cooling channel 160, which has a better technical effect.

[0052] Alternatively, if Figure 4 As shown, the first shell 110 is a square structure, the second shell 120 is a cylindrical structure, and a portion of the second shell 120 is tangent to the inner wall surface of the first shell 110, that is, the first shell 110 can adopt a square shell, and the specific shape of the first shell 110 can be determined according to actual needs, and the shape of the first shell 110 is not limited to this.

[0053] Optionally, refer to Figure 3 and Figure 4 , the volume of the first liquid cooling channel 150 is equal to the volume of the second liquid cooling channel 160, and the first liquid cooling channel 150 and the second liquid cooling channel 160 are symmetrically arranged. At this time, the connection position of the first shell 110 and the second shell 120 is arranged relative to the position of the partition 140, and the liquid cooling channel is divided into the first liquid cooling channel 150 and the second liquid cooling channel 160. The first liquid cooling channel 150 and the second liquid cooling channel 160 are connected only by the connecting port 141. The flow channel design of the liquid cooling channel that can flow through the entire surface area of ​​the second shell 120 improves the liquid cooling effect on the battery cell 170 in the second shell 120.

[0054] Optionally, combined Figure 3 and Figure 4 As shown, the sum of the cross-sectional area of ​​the first liquid cooling channel 150 and the cross-sectional area of ​​the second liquid cooling channel 160 is S1, and the cross-sectional area of ​​the battery cell 170 is S2, which satisfies: 0.2S2≤S1≤0.5S2, that is, it can be expressed as: on the one hand, the sum S1 of the cross-sectional area of ​​the first liquid cooling channel 150 and the cross-sectional area of ​​the second liquid cooling channel 160 is greater than or equal to 0.2S2 of the cross-sectional area of ​​the battery cell 170, so that the liquid cooling channel has sufficient cross-sectional area for heat exchange with the battery cell 170 to achieve a better liquid cooling effect; on the other hand, the sum S1 of the cross-sectional area of ​​the first liquid cooling channel 150 and the second liquid cooling channel 160 is less than or equal to 0.5S2 of the cross-sectional area of ​​the battery cell 170, so that the second shell 120 has sufficient capacity volume to accommodate a battery cell 170 of a larger volume, thereby achieving a balance between the liquid cooling effect and the capacity specification of the battery cell 170. Exemplarily, S2 is 800mm 2 , S1 is 400mm 2 At this time, the liquid cooling channel has a sufficient cross-sectional area for heat exchange with the battery cell 170 to achieve a better liquid cooling effect. In addition, S1 can also be 160mm 2 , which can increase the capacity of the battery cell 170 in the second shell 120 and improve the product performance of the battery cell 170 in the second shell 120. Of course, the sizes of S1 and S2 are not limited to this. In other embodiments, when S2 is 700 mm 2 When S1 is 350mm 2 ; When S2 is 900mm 2 When S1 is 180mm 2 , 250mm 2 、300mm 2 、350mm 2 、410mm 2 , 450mm 2 Etc., I won’t list them all here.

[0055] Alternatively, if Figure 5 As shown, the battery cell 170 includes a plurality of sub-cells 171, and the plurality of sub-cells 171 are connected in series in sequence along the second direction Y and are packaged. The sub-cell 171 is a wound soft-pack battery cell. The battery cell 170 can connect and package a plurality of wound soft-pack battery cells. Exemplarily, the sub-cell 171 is a wound soft-pack battery cell, and the wound soft-pack battery cell has a wound structure. The sub-cell 171 can be wrapped by an aluminum-plastic film, and the opposite ends of the sub-cell 171 respectively have a positive electrode sheet and a negative electrode sheet, and adjacent sub-cells 171 are connected through electrodes.

[0056] It can be understood that the mechanical strength of the soft-pack battery is relatively weak, and the soft-pack battery can be wound to form a cylindrical structure.

[0057] The embodiment of the utility model further provides a battery module 200, the battery module 200 includes a battery 100 as in any of the aforementioned embodiments, a plurality of batteries 100 are provided and arranged in a display manner, and the batteries 100 are arranged in a display manner along the second direction Y, and the battery module 200 further includes a connecting component 210. The first liquid cooling channels 150 of two adjacent batteries 100 or the second liquid cooling channels 160 of two adjacent batteries 100 are connected through the connecting component 210, and the first liquid cooling channels 150 and the second liquid cooling channels 160 of two adjacent batteries 100 may also be connected through the connecting component 210, that is, in a battery module 200, there are multiple connection modes between the liquid cooling channels of two adjacent batteries 100. Exemplarily, the first liquid-cooling channel 150 of one battery 100 is connected to the first liquid-cooling channel 150 of another battery 100, or the second liquid-cooling channel 160 of one battery 100 is connected to the second liquid-cooling channel 160 of another battery 100, or the first liquid-cooling channel 150 of one battery 100 is connected to the second liquid-cooling channel 160 of another battery 100, and the liquid-cooling channels of two adjacent batteries 100 are connected, so that the liquid-cooling channels of multiple batteries 100 of the battery module 200 can be connected.

[0058] It is understandable that the manner of connecting the first liquid cooling channels 150 or the second liquid cooling channels 160 of the plurality of batteries 100 to form a liquid cooling channel is not specifically limited. Figure 1 As shown, the dotted line in the figure shows the flow path schematic diagram of the liquid cooling channel.

[0059] Optionally, the connecting component 210 includes a connecting tube 211 and a connecting piece 212, the connecting tube 211 is connected to the first infusion port and the second infusion port respectively through the connecting piece 212, the connecting piece 212 and the connecting tube 211 cooperate with each other to connect the liquid cooling channel between the two batteries 100, thereby achieving the purpose of planning and designing the liquid cooling channel.

[0060] Optionally, refer to Figure 7 , the liquid cooling channel can adopt a series structure (the dotted line in the figure represents the liquid cooling channel), and the liquid cooling channel of the series structure constitutes a liquid cooling flow channel; Figure 8 As shown, the liquid cooling channel can also adopt a parallel structure. The liquid cooling channel of the parallel structure constitutes multiple liquid cooling channels, and the liquid cooling channel of the series structure flows only through one liquid cooling channel. Compared with the liquid cooling channel of the series structure, the liquid cooling channel of the parallel structure can more quickly cover the cooling liquid through the liquid inlet to the range area of ​​each layer through multiple liquid cooling channels, and has a faster liquid cooling effect. For example, the battery 100 of the battery module 200 is distributed in a three-layer display, and the connecting component 210 between the battery 100 of the first layer and the battery 100 of the second layer is designed in parallel, and the connecting component 210 between the battery 100 of the second layer and the battery 100 of the third layer is designed in parallel, and so on. When a series liquid cooling channel or a parallel liquid cooling channel is adopted, the liquid cooling channel is planned and designed as a whole, which can cover the area of ​​all batteries 100 in the battery module 200, keep the liquid cooling channel unobstructed, and facilitate the continuous heat exchange of the coolant.

[0061] It can be understood that the pipe diameter of the connecting component 210 refers to the pipe diameter of the connecting tube 211 and the first infusion port or the second infusion port when connected through the connecting piece 212 .

[0062] Optionally, whether it is a series liquid cooling channel or a parallel liquid cooling channel, in the liquid cooling channel, from the liquid inlet to the liquid outlet, the pipe diameter N of the liquid cooling channel near the liquid outlet, and the pipe diameter M of the liquid cooling channel near the liquid inlet satisfy M<N, that is, the pipe diameter N of the connecting component 210 near the liquid outlet is larger than the pipe diameter M of the connecting component 210 near the liquid inlet. After the coolant enters through the liquid inlet, the temperature of the coolant near the liquid outlet is higher than the temperature of the coolant near the liquid inlet after heat exchange. By increasing the pipe diameter at the liquid outlet to increase the liquid flow rate, the temperature difference of the entire liquid cooling channel is balanced, and the liquid cooling effect at different positions of the battery module 200 can be kept basically consistent, with better technical effects.

[0063] An embodiment of the present invention further provides an electrical device, comprising a battery 100 as in any one of the aforementioned embodiments, or a battery module 200 as in any one of the aforementioned embodiments.

[0064] In summary, the embodiments of the present invention have the following beneficial effects, including:

[0065] The battery 100 provided by the utility model can cool the battery cell 170 by liquid cooling, and the second housing 120 is provided for mounting the battery cell 170, and the first liquid cooling channel 150 and the second liquid cooling channel 160 are formed to cover the battery cell 170, and the infusion ports of the first liquid cooling channel 150 and the second liquid cooling channel 160 are located on the same side, and the liquid cooling channel formed by the coolant flowing through the first liquid cooling channel 150 and the second liquid cooling channel 160 can cover the entire area of ​​the battery 100, and the communication port 141 is provided at the portion of the partition 140 away from the first end. The second end can ensure that the coolant flows through the first liquid cooling channel 150 and then flows into the second liquid cooling channel 160, thereby improving the liquid cooling effect on the battery 100; the second shell 120 abuts against the inner wall surface of the first shell 110, so that the cross-sectional area of ​​the second shell 120 for installing the battery cell 170 is larger, and a battery 100 with a larger volume capacity can be placed, so that the battery cell 170 has a larger capacity size. Under the premise of ensuring the performance of the battery 100, a balance is achieved between the battery 100 having a larger capacity performance and a better liquid cooling effect.

[0066] The battery module 200 provided in the embodiment of the utility model includes the above-mentioned battery 100, and the battery 100 is provided in plurality and is distributed in a display manner. The battery module 200 integrates and installs the plurality of batteries 100, and can form a series liquid cooling channel or a parallel liquid cooling channel. The liquid cooling channel is overall planned and designed to cover the area of ​​all batteries in the battery module 200, keep the liquid cooling channel unobstructed, and facilitate continuous heat exchange of the coolant, thereby improving the liquid cooling heat dissipation effect of the battery module 200.

[0067] The electric device provided by the embodiment of the utility model includes the above-mentioned battery 100 or the above-mentioned battery module 200, and cools and dissipates the heat of the battery 100 or the battery module 200 in the electric device through a liquid cooling channel, thereby reducing the temperature of the electric device during use and increasing the service life of the electric device.

[0068] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limiting, and thus other examples of the exemplary embodiments may have different values.

[0069] The above-mentioned embodiments only express several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A battery, characterized in that: include: A first housing (110); A second shell (120) is arranged inside the first shell (110) along a first direction (X), and a portion of the second shell (120) is connected to an inner wall surface of the first shell (110), and a gap is formed between the remaining portion of the second shell (120) and the first shell (110) to form a liquid cooling channel; A battery core (170), the battery core (170) being arranged in the second shell (120); A partition (140), wherein the partition (140) is arranged in the liquid cooling channel along the second direction (Y) and separates the liquid cooling channel into a first liquid cooling channel (150) and a second liquid cooling channel (160), wherein the first liquid cooling channel (150) is provided with a first infusion port, and the second liquid cooling channel (160) is provided with a second infusion port, wherein the first infusion port and the second infusion port are both located at the same end of the first shell (110), and the partition (140) is provided with a connecting port (141) at a position away from the first infusion port or the second infusion port, and the first liquid cooling channel (150) is connected to the second liquid cooling channel (160) through the connecting port (141).

2. The battery according to claim 1, characterized in that The first shell (110) and the second shell (120) are both cylindrical structures, and the central axis of the first shell (110) does not coincide with the central axis of the second shell (120).

3. The battery according to claim 2, characterized in that The cross-sectional area of ​​the first liquid cooling channel (150) gradually decreases in a direction from the partition (140) to a connection position between the first shell (110) and the second shell (120); The cross-sectional area of ​​the second liquid cooling channel (160) gradually decreases in a direction from the partition (140) to a connection position between the first shell (110) and the second shell (120).

4. The battery according to claim 1, characterized in that The first shell (110) is a square structure, the second shell (120) is a cylindrical structure, and a portion of the second shell (120) is tangent to the inner wall surface of the first shell (110).

5. The battery according to claim 1, characterized in that The volume of the first liquid cooling channel (150) is equal to the volume of the second liquid cooling channel (160), and the first liquid cooling channel (150) and the second liquid cooling channel (160) are symmetrically arranged.

6. The battery according to any one of claims 1 to 5, characterized in that: The sum of the cross-sectional area of ​​the first liquid cooling channel (150) and the cross-sectional area of ​​the second liquid cooling channel (160) is S1, and the cross-sectional area S2 of the battery cell (170) satisfies: 0.2S2≤S1≤0.5S2.

7. The battery according to any one of claims 1 to 5, characterized in that: The battery cell (170) comprises a plurality of sub-battery cells (171), wherein the plurality of sub-battery cells (171) are sequentially connected in series and packaged, and the sub-battery cells (171) are wound soft-package battery cells (170).

8. A battery module, characterized in that: A battery (100) comprising the battery (100) according to any one of claims 1 to 7, wherein a plurality of the batteries (100) are arranged and distributed in a display manner, and the battery module (200) further comprises: A connecting component (210), wherein the first liquid cooling channels (150) of two adjacent batteries (100) or the second liquid cooling channels (160) of two adjacent batteries (100) are connected via the connecting component (210), And / or the first liquid cooling channel (150) and the second liquid cooling channel (160) of two adjacent batteries (100) are connected via the connecting component (210).

9. The battery module according to claim 8, characterized in that: The communication component (210) comprises a communication tube (211) and a connecting piece (212); the communication tube (211) is connected to the first infusion port and the second infusion port respectively through the connecting piece (212).

10. An electrical device, characterized in that: include: The battery (100) according to any one of claims 1 to 7, or the battery module (200) according to claim 8 or 9.

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