Battery and electric device

Abstract

The battery comprises a shell 100, a containing space 110 is formed in the shell 100, a plurality of battery cells 120 arranged in an array are arranged in the containing space 110, the shell 100 is provided with a bottom plate 130 forming the inner bottom face of the containing space 110, and the bottom plate 130 is provided with a plurality of battery cells 120 arranged in the Z direction. A plurality of fins 140 are arranged on one side, far away from the battery core 120, of the bottom plate 130; and the thermoelectric refrigeration unit (200) is arranged in the accommodating space (110), and the thermoelectric refrigeration unit (200) is arranged between the bottom plate (130) and the battery cell (120). According to the scheme, the fins 140 are arranged on the side, away from the battery cell 120, of the bottom plate 130 of the shell 100, on one hand, the strength of the shell can be improved, heat dissipation of the hot end of the thermoelectric refrigeration unit 200 can be accelerated, the performance of rapid cooling or heating of the battery is achieved, and on the other hand, the battery has the advantages of being small in occupied space and easy to manufacture.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery thermal management, and in particular to a battery and a power utilization device. BACKGROUND

[0002] As a core component of energy storage and conversion, batteries have been widely used in electric vehicles and other fields. However, a large amount of heat will be generated during the use of the battery, and if the heat cannot be dissipated in time and effectively, it will have a negative impact on the performance and service life of the battery. To solve the above problems, the liquid cooling system is currently widely used in the battery system, but the liquid cooling system has the disadvantages of high cost, large space occupation, and easy leakage of cooling liquid. CONTENT OF THE UTILITY MODEL

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a new battery and a power utilization device to solve the technical problems of high cost, large space occupation, and easy leakage of cooling liquid of the liquid cooling system used in the battery system.

[0004] In a first aspect, the present application provides a battery, comprising:

[0005] A shell 100, an accommodation space 110 is formed inside the shell 100, a plurality of battery cells 120 arranged in an array are arranged in the accommodation space 110, the shell 100 has a bottom plate 130 forming the bottom surface of the accommodation space 110, and a plurality of fins 140 are arranged on the side of the bottom plate 130 away from the battery cells 120 in the Z direction;

[0006] A thermoelectric refrigeration unit 200 is arranged in the accommodation space 110, and the thermoelectric refrigeration unit 200 is arranged between the bottom plate 130 and the battery cells 120.

[0007] In the present application, a plurality of fins 140 are arranged on the side of the bottom plate 130 of the shell 100 away from the battery cells 120, which can increase the strength of the shell, accelerate the heat dissipation of the hot end of the thermoelectric refrigeration unit 200, and realize the performance of rapid cooling or heating of the battery, and has the characteristics of small space occupation and simple manufacturing.

[0008] In one of the above technical solutions of the battery, the plurality of fins 140 are arranged at intervals in the X direction or the Y direction and extend away from the side of the bottom plate 130 in the Z direction.

[0009] In the present application, the plurality of fins 140 extend away from the side of the bottom plate 130 in the Z direction, which increases the contact area of the fins 140 with the external environment and accelerates the heat dissipation of the fins.

[0010] In one of the battery technical solutions above, the shell 100 and the fin 140 are integrally formed, and the shell 100 and the fin 140 are aluminum profiles.

[0011] In the embodiments of the present application, the shell 100 and the fin 140 are integrally formed, which reduces the difficulty of the preparation process. By using aluminum profiles as the shell 100 and the fin 140, the shell 100 and the fin 140 have the characteristics of easy processing and molding, high-temperature corrosion resistance, good heat transfer and electrical conductivity, etc.

[0012] In one of the battery technical solutions above, the thermoelectric refrigeration unit 200 has a sheet structure, and the thermoelectric refrigeration unit 200 is fixedly connected to the bottom plate 130 and the battery cell 120 through the heat-conducting adhesive 400 on the two sides opposite in the Z direction.

[0013] In the embodiments of the present application, the thermoelectric refrigeration unit 200 is fixedly connected to the bottom plate 130 and the battery cell 120 through the heat-conducting adhesive 400, which reduces the assembly difficulty.

[0014] In one of the battery technical solutions above, the thermoelectric refrigeration unit 200 adopts a thermoelectric refrigeration sheet, which includes a hot end and a cold end. The temperature of the hot end is greater than the temperature of the cold end, and the temperature difference between the hot end and the cold end ranges from 40 to 65℃.

[0015] In one of the battery technical solutions above, the hot end of the thermoelectric refrigeration unit 200 is fixedly connected to the bottom plate 130, and the cold end of the thermoelectric refrigeration unit 200 is fixedly connected to the battery cell 120.

[0016] Through the embodiments of the present application, the cold end of the thermoelectric refrigeration unit 200 can exchange heat with the battery cell 120 to dissipate heat of the battery cell 120, and the bottom plate 130 can exchange heat with the hot end of the thermoelectric refrigeration unit 200 to dissipate heat of the hot end of the thermoelectric refrigeration unit 200.

[0017] In one of the battery technical solutions above, the battery further includes a liquid cooling mechanism 300, and the liquid cooling mechanism 300 at least includes:

[0018] The liquid cooling pipe 310 is arranged in part of the side plate 150 of the shell 100, and both free ends of the liquid cooling pipe 310 protrude to the same side of the shell 100 along the X direction. The liquid cooling pipe 310 is used for the heat exchange liquid to pass through.

[0019] The external water tank 320 is in communication with the liquid cooling pipe 310 and is used for containing the heat exchange liquid.

[0020] The circulating pump 330 is in communication with the liquid cooling pipe 310 and the external water tank 320.

[0021] The embodiment of the application can accelerate the heat dissipation of the shell 100 and the fins 140 by additionally arranging the liquid cooling mechanism 300 in the battery and arranging the liquid cooling pipe 310 in part of the side wall 150 of the shell 100, so that the heat dissipation of the hot end of the thermoelectric refrigeration unit 200 is accelerated.

[0022] In one of the technical solutions of the battery, the two free ends of the liquid cooling pipe 310 are respectively an inlet 311 and an outlet 312;

[0023] The inlet 311 is in communication with the outlet of the circulating pump 330, the outlet 312 is in communication with the inlet of the external water tank 320, and the inlet of the circulating pump 330 is in communication with the outlet of the external water tank 320.

[0024] In one of the technical solutions of the battery, the liquid cooling mechanism 300 further comprises:

[0025] A compressor 340 is connected with the external water tank 320, and is used for pressure control of the liquid cooling mechanism 300 and compression treatment of the heat exchange liquid.

[0026] In the second aspect, the application further provides a power consumption device, which at least comprises the battery according to any one of the first aspect.

[0027] The above one or more technical solutions of the application have at least one or more of the following beneficial effects:

[0028] In the implementation of the technical solutions of the application, the battery comprises: a shell 100, an accommodating space 110 is formed in the shell 100, a plurality of battery cells 120 arranged in an array are arranged in the accommodating space 110, the shell 100 has a bottom plate 130 forming an inner bottom surface of the accommodating space 110, and a plurality of fins 140 are arranged on the side of the bottom plate 130 away from the battery cells 120 in the Z direction; and a thermoelectric refrigeration unit 200 arranged in the accommodating space 110 and arranged between the bottom plate 130 and the battery cells 120. According to the application, the plurality of fins 140 are arranged on the side of the bottom plate 130 of the shell 100 away from the battery cells 120, which can increase the strength of the shell, accelerate the heat dissipation of the hot end of the thermoelectric refrigeration unit 200, realize the performance of rapid cooling or heating of the battery, and has the characteristics of small space occupation and simple manufacturing.

[0029] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following description and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0030] The disclosure of the present application will become more apparent with reference to the drawings. It should be understood by those skilled in the art that the drawings are only for the purpose of illustration and are not intended to limit the scope of protection of the present application. In addition, similar numbers in the figures are used to represent similar components, wherein:

[0031] Figure 1 is an exploded view of the battery provided by the first embodiment of the present application;

[0032] Figure 2 is a sectional view of the battery from one viewing direction provided by the first embodiment of the present application;

[0033] Figure 3 is a perspective structural schematic view of the battery provided by the first embodiment of the present application;

[0034] Figure 4 is a structural schematic view of a partial shell provided by the first embodiment of the present application;

[0035] Figure 5 is a structural schematic view of a liquid cooling mechanism provided by the first embodiment of the present application;

[0036] Figure 6 is a structural schematic view of a liquid cooling mechanism provided by the second embodiment of the present application;

[0037] Figure 7 is a structural schematic view of the battery without a cover provided by the third embodiment of the present application;

[0038] Figure 8 is a structural schematic view of a partial shell and a support beam provided by the third embodiment of the present application.

[0039] Explanation of reference signs:

[0040] 100, shell; 110, accommodation space; 120, battery cell; 130, bottom plate; 140, fin; 150, side wall; 160, cover plate; 170, first opening; 180, second opening; 200, thermoelectric refrigeration unit; 300, liquid cooling mechanism; 310, liquid cooling pipe; 311, liquid inlet; 312, liquid outlet; 320, external water tank; 330, circulating pump; 340, compressor; 400, heat-conducting adhesive; 500, support beam; 510, first support beam; 520, second support beam. DETAILED DESCRIPTION

[0041] Some embodiments of the present application will be described below with reference to the drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present application, and are not intended to limit the scope of protection of the present application.

[0042] As described in the background, the liquid cooling system commonly used in the prior art for heat dissipation of the battery has the disadvantages of high cost, large space occupation, and easy leakage of the cooling liquid. Based on the above problems, the embodiment of the present application creatively proposes a battery and a power equipment with a new structure. A plurality of fins 140 are arranged on the side of the bottom plate 130 of the shell 100 away from the battery cell 120. On the one hand, the strength of the shell can be increased, and the heat dissipation of the hot end of the thermoelectric refrigeration unit 200 can be accelerated, realizing the performance of rapid cooling or heating of the battery. On the other hand, the space occupation is small, and the manufacturing is simple.

[0043] The scheme of the present application will be described in detail below with reference to the drawings and various embodiments.

[0044] Embodiment one

[0045] Figure 1 is an exploded view of the battery provided by the embodiment one of the present application, Figure 2 is a cross-sectional view of the battery provided by the embodiment one of the present application in one viewing direction, Figure 3 is a schematic diagram of the three-dimensional structure of the battery provided by the embodiment one of the present application, as shown in Figures 1 to 3 , the battery provided by the embodiment of the present application mainly includes a shell 100, a thermoelectric refrigeration unit 200, and a liquid cooling mechanism 300. The shell 100 is internally formed with an accommodating space 110, and a plurality of battery cells 120 arranged in an array are arranged in the accommodating space 110. The shell 100 has at least a bottom plate 130, the bottom plate 130 forms the inner bottom surface of the accommodating space 110, and the thermoelectric refrigeration unit 200 is arranged between the bottom plate 130 and the battery cell 120. Along the Z direction, a plurality of fins 140 are arranged on the side of the bottom plate 130 away from the battery cell 120 (i.e. the side exposed to the external environment). By arranging a plurality of fins 140 on the side of the bottom plate 130 of the shell 100 away from the battery cell 120, on the one hand, the strength of the shell can be increased, on the other hand, the heat dissipation of the hot end of the thermoelectric refrigeration unit 200 can be accelerated, realizing the performance of rapid cooling or heating of the battery, and having the characteristics of simple manufacturing.

[0046] It should be noted that, as shown in Figure 1 , in the embodiment of the present application, the X direction is set as the length direction of the battery, the Y direction is set as the width direction of the battery, and the Z direction is set as the height direction of the battery.

[0047] Referring to Figure 1 and Figure 4As shown, the shell 100 comprises a bottom plate 130, a side plate 150 and a cover plate 160. The bottom plate 130, the side plate 150 and the cover plate 160 cooperatively form the accommodating space 110. The bottom plate 130 and the cover plate 160 are respectively arranged on two sides opposite to the side plate 150. In some specific embodiments, the bottom plate 130 and the side plate 150 are fixedly connected together or integrally formed, and the cover plate 160 is detachably connected with the side plate 150, so as to assemble the components such as the battery cell 120 and the thermoelectric refrigeration unit 200 into the accommodating space 110.

[0048] As an exemplary but non-limiting illustration, in the present application, the plurality of fins 140 extend on the bottom plate 130 in the Z direction away from one side of the bottom plate 130, increasing the contact area of the fins 140 with the external environment, thereby accelerating the heat dissipation of the fins 140.

[0049] In some specific embodiments, the plurality of fins 140 are arranged on the bottom plate 130 in the X direction (not shown in the figure);

[0050] In some other specific embodiments, the plurality of fins 140 are arranged on the bottom plate 130 in the Y direction (as shown in the figure); Figure 3

[0051] In some other specific embodiments, the plurality of fins 140 are arranged on the bottom plate 130 in a direction at a preset angle with respect to the X direction or the Y direction (not shown in the figure). It should be noted that the specific size of the preset angle is not limited in the present application, and can be set according to actual product requirements in specific implementation.

[0052] In some specific embodiments, the fins 140 are integrally formed with the shell 100 (specifically with the bottom plate 130 of the shell 100), thereby reducing the assembly process and lowering the difficulty of the preparation process;

[0053] In some other specific embodiments, the fins 140 and the shell 100 are relatively independent components, and the fins 140 are connected to the bottom plate 130 of the shell 100.

[0054] Aluminum profiles have the advantages of high strength, good plasticity, good corrosion resistance, good heat dissipation performance, recyclability, light weight, high safety, etc. Therefore, in some specific embodiments, the shell 100 can be made of aluminum profiles, and further, the fins 140 are also made of aluminum profiles, and the fins 140 are integrally formed with the shell 100.

[0055] It should be noted that the shape and size of the thermoelectric refrigeration unit 200 are not limited in the present application, and can be set according to actual product requirements without departing from the inventive concept of the present application, for example, the shape and size can be set according to the shape and size of the battery cell 120 and the shell 100. As an exemplary but non-limiting illustration, as shown in​Figure 1 As shown, the thermoelectric refrigeration unit 200 is in a sheet structure, thereby increasing the contact area of the thermoelectric refrigeration unit 200 with the battery cell 120 and the bottom plate 130 and improving the heat dissipation effect.

[0056] In order to improve the stability of the assembled battery, the thermoelectric refrigeration unit 200 is fixedly connected with the bottom plate 130 and the battery cell 120 in the embodiment. It should be noted that the connection mode between the thermoelectric refrigeration unit 200, the bottom plate 130 and the battery cell 120 is not limited in the embodiment, and can be selected according to actual needs without departing from the inventive concept of the application. For example, in some specific embodiments, the thermoelectric refrigeration unit 200 can be fixedly connected between the bottom plate 130 and the battery cell 120 by using the heat-conducting adhesive 400. The heat-conducting adhesive 400 has good adhesion and heat conduction (heat dissipation) properties, and the fixed connection between the thermoelectric refrigeration unit 200, the bottom plate 130 and the battery cell 120 by using the heat-conducting adhesive 400 can not only play a sealing role, but also not affect the heat conduction (heat dissipation) properties between them. In specific implementation, the heat-conducting adhesive 400 can also be in a sheet structure, and the thermoelectric refrigeration unit 200 is fixedly connected with the bottom plate 130 and the battery cell 120 through the heat-conducting adhesive 400 on the two sides opposite to each other in the Z direction.

[0057] In some specific embodiments, the thermoelectric refrigeration unit 200 is a thermoelectric refrigeration sheet, which includes a hot end and a cold end. The cold end of the thermoelectric refrigeration unit 200 is fixedly connected with the battery cell 120, and exchanges heat with the battery cell 120 to dissipate heat from the battery cell 120; the hot end of the thermoelectric refrigeration unit 200 is fixedly connected with the bottom plate 130, and exchanges heat with the bottom plate 130 to dissipate heat from the hot end. In this process, the fins 140 exchange heat with the bottom plate 130 to dissipate heat from the bottom plate 130, thereby accelerating the heat dissipation of the hot end. It can be understood that when the thermoelectric refrigeration unit 200 is working, the temperature of the hot end is higher than that of the cold end, and the temperature difference between the hot end and the cold end is in the range of 40-65℃. The temperature of the hot end is reduced by actively dissipating heat through the fins 140, and the temperature of the cold end also decreases accordingly. According to tests, the temperature difference between the hot end and the cold end can reach 65-75℃.

[0058] Referring to Figures 1 to 5 As shown, the battery further includes a liquid cooling mechanism 300 in the embodiment. Further referring to Figure 5As shown, the liquid cooling mechanism 300 includes a liquid cooling pipe 310, an external water tank 320, and a circulating pump 330. The liquid cooling pipe 310 is arranged in the partial side wall 150 of the shell 100, and both free ends of the liquid cooling pipe 310 protrude in the X direction on the same side of the shell 100. The liquid cooling pipe 310 is used for heat exchange liquid to pass through. The external water tank 320 is connected with the liquid cooling pipe 310 and is used for containing the heat exchange liquid. The circulating pump 330 is connected with the liquid cooling pipe 310 and the external water tank 320 and is used for providing power for circulation of the heat exchange liquid in the liquid cooling mechanism 300, so as to ensure that the heat exchange liquid can circulate in the liquid cooling mechanism 300. Further, the circulating pump 330 can also set the flow rate of the heat exchange liquid to make the heat exchange liquid circulate in the liquid cooling mechanism 300 according to the set flow rate. By additionally arranging the liquid cooling mechanism 300 in the battery and arranging the liquid cooling pipe 310 in the partial side wall 150 of the shell 100, the heat dissipation of the shell 100 and the fins 140 can be accelerated, so as to accelerate the heat dissipation of the hot end of the thermoelectric refrigeration unit 200, and then the temperature of the cold end of the thermoelectric refrigeration unit 200 can be further reduced. Through experiments, the temperature difference between the hot end and the cold end can reach 75-85°C.

[0059] In some specific embodiments, the two free ends of the liquid cooling pipe 310 are respectively an inlet 311 and an outlet 312. The inlet 311 is connected with the outlet of the circulating pump 330, the outlet 312 is connected with the inlet of the external water tank 320, and the inlet of the circulating pump 330 is connected with the outlet of the external water tank 320. When the battery works, the circulating pump 330 provides power to draw the heat exchange liquid from the external water tank 320 through the outlet of the external water tank 320, into the circulating pump 330 through the inlet of the circulating pump 330, out of the circulating pump 330 through the outlet of the circulating pump 330, into the liquid cooling pipe 310 through the inlet 311 of the liquid cooling pipe 310, flow in the liquid cooling pipe 310 while dissipating heat for the shell 100 and the fins 140, and finally flow out of the liquid cooling pipe 310 through the outlet 312 of the liquid cooling pipe 310, and then into the external water tank 320 through the inlet of the external water tank 320, to realize circulation in the liquid cooling mechanism 300.

[0060] It can be understood that the liquid cooling pipe 310, the external water tank 320, and the circulating pump 330 are connected through pipes or the like, so that the heat exchange liquid can flow and circulate among them.

[0061] It should be noted that the heat exchange liquid is not specifically limited in the application, and can be selected according to actual needs without deviating from the inventive concept of the application. For example, the heat exchange liquid in the application includes but is not limited to cooling liquid, cooling oil, and the like.

[0062] Further reference is made to Figure 4As shown, in some specific embodiments, the first opening 170 and the second opening 180 are formed on the shell 100. Among them, the first opening 170 and the second opening 180 are formed on the side wall 150 close to the liquid inlet 311 and the liquid outlet 312 (i.e. two free ends) of the liquid cooling pipeline 310. As an exemplary but not restrictive description, in the embodiment of the application, the first opening 170 and the second opening 180 penetrate the side wall 150 along the Y direction. The liquid inlet 311 and the liquid outlet 312 (i.e. two free ends) of the liquid cooling pipeline 310 are exposed outside the shell 100 through the first opening 170 and the second opening 180 respectively, so as to be connected with the circulating pump 330 and the external water tank 320 respectively.

[0063] Embodiment two

[0064] The difference between the embodiment and the embodiment one is that, in the embodiment of the application, the liquid cooling mechanism 300 further comprises a compressor 340. Among them, the same or similar contents in the embodiment as the above-mentioned embodiment one can be referred to the above introduction, and will not be repeated hereinafter. It can be understood that the main function of the compressor 340 is to convert the electrical energy input into the compressor 340 into mechanical energy, and then compress the heat exchange liquid, that is, to provide power for the liquid cooling mechanism 300 to support the work of the liquid cooling mechanism 300. Referring to Figure 6 It is shown that the compressor 340 is connected with the external water tank 320, so as to compress the heat exchange liquid in the external water tank 320 and control the pressure of the liquid cooling mechanism 300.

[0065] By adding the compressor 340 in the liquid cooling mechanism 300, the compressor 340 assists the circulating work of the liquid cooling mechanism 300, increases the heat exchange liquid circulation in the shell 100 to accelerate the heat dissipation of the hot end of the thermoelectric refrigeration unit 200, and further reduces the temperature of the cold end of the thermoelectric refrigeration unit 200. After the test, the temperature difference between the hot end and the cold end can reach 90-100℃.

[0066] It should be noted that the specific implementation of the compressor 340 is not limited in the embodiment of the application, and any known compressor for liquid cooling mechanism can be used in the application without departing from the inventive concept of the application. For example, the compressor 340 can adopt a piston compressor.

[0067] Embodiment three

[0068] The difference between the embodiment and the embodiment one is that, in the embodiment of the application, the battery further comprises a support beam 500. Among them, the same or similar contents in the embodiment as the above-mentioned embodiment one can be referred to the above introduction, and will not be repeated hereinafter. Referring to Figures 7 to 8As shown, the support beam 500 is arranged in the accommodating space 110 inside the shell 100 and between the plurality of battery cells 120. By adding the support beam 500, the strength of the shell of the battery can be further increased, and the stability of the battery can be improved.

[0069] In some specific embodiments, the support beam 500 includes a first support beam 510 and a second support beam 520. The first support beam 510 and the second support beam 520 are arranged to cross each other, and preferably, the first support beam 510 and the second support beam 520 are arranged to be perpendicular to each other. The first support beam 510 and the second support beam 520 cooperate to divide the accommodating space 110 into a plurality of small accommodating spaces, and each small accommodating space can accommodate one or more battery cells 120.

[0070] Further referring to Figure 8 As shown, in some specific embodiments, the first support beam 510 extends along the X direction, and the second support beam 520 extends along the Y direction.

[0071] It should be noted that in the embodiments of the present application, the number of the first support beam 510 and the second support beam 520 is not limited, and in actual implementation, the number can be set according to actual product requirements. For example, as an exemplary but non-limiting description, in the embodiments of the present application, the number of the first support beam 510 can be 1, and the number of the second support beam 520 can be 2.

[0072] Embodiment four

[0073] Corresponding to the above-mentioned embodiments one to three, the present application also provides a power utilization device, which includes the battery as described in any one of the embodiments one to three. In the present embodiment, the same or similar contents as the above-mentioned embodiments one to three can be referred to the foregoing description, and will not be repeated hereinafter.

[0074] Each of the embodiments in the present specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0075] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0076] In addition, the terms "first", "second", etc. are used only for the purpose of description, and should not be understood as indicating or implying relative importance or implying a number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly and specifically limited.

[0077] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. 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.

[0078] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A battery, characterized by, The battery comprises: a shell (100) having an accommodating space (110) formed inside, a plurality of battery cells (120) arranged in an array in the accommodating space (110), and a bottom plate (130) forming a bottom surface of the accommodating space (110), wherein a plurality of fins (140) are arranged on a side of the bottom plate (130) away from the battery cells (120) in a Z direction; a thermoelectric refrigeration unit (200) arranged in the accommodating space (110) and located between the bottom plate (130) and the battery cells (120).

2. The battery of claim 1, wherein, The plurality of fins (140) are arranged at intervals in an X direction or a Y direction and extend away from the bottom plate (130) in the Z direction.

3. The battery of claim 1, wherein, The shell (100) and the fins (140) are integrally formed, and / or the shell (100) and the fins (140) are made of aluminum profiles.

4. The battery of claim 1, wherein, The thermoelectric refrigeration unit (200) has a sheet-like structure, and the thermoelectric refrigeration unit (200) is fixedly connected to the bottom plate (130) and the battery cells (120) through thermally conductive adhesive (400) on two opposite sides in the Z direction.

5. The battery of claim 4, wherein, The thermoelectric refrigeration unit (200) uses a thermoelectric refrigeration sheet, which includes a hot end and a cold end, the temperature of the hot end is greater than that of the cold end, and the temperature difference between the hot end and the cold end ranges from 40 to 65℃.

6. The battery of claim 5, wherein, The hot end of the thermoelectric refrigeration unit (200) is fixedly connected to the bottom plate (130), and the cold end of the thermoelectric refrigeration unit (200) is fixedly connected to the battery cells (120).

7. The battery according to any one of claims 1 to 6, characterized in that, The battery further comprises a liquid cooling mechanism (300), which at least comprises: a liquid cooling pipe (310) arranged in part of a side wall (150) of the shell (100), both free ends of the liquid cooling pipe (310) protrude to the same side of the shell (100) in the X direction, and the liquid cooling pipe (310) is used for heat exchange liquid to pass through; an external water tank (320) in communication with the liquid cooling pipe (310) and used for containing the heat exchange liquid; a circulating pump (330) in communication with the liquid cooling pipe (310) and the external water tank (320).

8. The battery of claim 7, wherein, The two free ends of the liquid cooling pipe (310) are an inlet (311) and an outlet (312), respectively. The inlet (311) is in communication with an outlet of the circulating pump (330), the outlet (312) is in communication with an inlet of the external water tank (320), and an inlet of the circulating pump (330) is in communication with an outlet of the external water tank (320).

9. The battery of claim 8, wherein, The liquid cooling mechanism (300) further comprises: a compressor (340) connected to the external water tank (320) and used for pressure control of the liquid cooling mechanism (300) and compression treatment of the heat exchange liquid.

10. An electrical device, characterized by The battery at least comprises any one of the batteries according to claims 1 to 9.

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