Battery device and battery cabinet

Abstract

The utility model discloses a battery device and a battery cabinet, and relates to the technical field of batteries, the battery device comprises a casing, the casing is provided with a cooling cavity, the cooling cavity is filled with a cooling medium, the casing is convexly provided with a first heat transfer part, and the casing is concavely provided with a mounting groove; the battery monomers are immersed in the cooling medium; the heat dissipation assembly is arranged in the mounting groove; the first heat transfer part is in contact with the cooling medium so as to transfer the heat of the battery monomers to the heat dissipation assembly, and the heat dissipation assembly is used for dissipating the heat of the battery monomers to the outside of the shell; the technical scheme provided by the utility model has the technical effects that the first heat transfer part is convexly arranged on the inner side wall of the shell towards the cooling cavity, so that the heat dissipation area of the first heat transfer part in contact with the cooling medium is increased, the heat dissipation effect of the battery monomer is further improved, and the service life of the battery monomer is further prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field especially relates to a battery device and battery cabinet. BACKGROUND

[0002] Power lithium ion battery monomer is often applied to the internal power source power supply of ship, vehicle or aircraft etc., has the advantages such as long service life and high operating voltage compared with traditional battery, but power lithium ion battery monomer needs to cool battery monomer in the use process, to avoid the occurrence of safety accident caused by battery monomer overheating. The existing liquid cooling technology of battery monomer has poor heat dissipation effect, and thus shortens the service life of battery monomer. SUMMARY

[0003] The utility model discloses a battery device and battery cabinet, to improve the efficiency of battery monomer heat dissipation.

[0004] To achieve the above-mentioned purpose, the battery device provided by the utility model, including the casing, with cooling cavity, the cooling cavity is filled with cooling medium, the inner side wall of the casing is formed with the first heat transfer part towards the cooling cavity, the outer side wall of the casing opposite to the first heat transfer part is recessed to form the mounting groove towards the cooling cavity;

[0005] Battery monomer, set in the cooling cavity, the battery monomer is immersed in the cooling medium;And

[0006] Heat dissipation assembly, at least part heat dissipation assembly is set in the mounting groove;

[0007] The first heat transfer part contacts the cooling medium, to transfer the heat of the battery monomer to the heat dissipation assembly, and the heat dissipation assembly is used to dissipate the heat of the battery monomer to the outside of the casing.

[0008] In an embodiment, the casing includes an upper cover and an outer shell, the top end of the outer shell has an opening, the upper cover covers the opening, the upper cover is recessed to form the first heat transfer part towards one side close to the opening, the outer side wall of the upper cover opposite to the first heat transfer part is recessed to form the mounting groove towards the cooling cavity, and the outer shell has the cooling cavity.

[0009] In an embodiment, the two sides of the upper cover are respectively provided with the second heat transfer part connected with the first heat transfer part, the second heat transfer part is located above the first heat transfer part, the first heat transfer part is arranged between the two second heat transfer parts, and the inner side wall of the second heat transfer part and the inner side wall of the outer shell form a cavity communicating with the cooling cavity.

[0010] In an embodiment, the battery device further comprises a first seal arranged at a joint of the upper cover and the housing, and the first seal is configured to seal the upper cover and the housing.

[0011] In an embodiment, the battery device further comprises a battery management system and a battery sampling assembly, the battery management system comprises a battery management circuit board, the battery sampling assembly is electrically connected to the battery monomer and the battery management circuit board respectively, the battery sampling assembly is configured to collect voltage signals and / or temperature signals of the battery monomers and transmit the collected signals to the battery management circuit board, and the battery management circuit board is configured to control the battery monomers.

[0012] In an embodiment, the battery device further comprises a second seal, the upper cover has a sealing port configured to connect a sampling line of the battery monomers to the battery sampling assembly, and the second seal is filled between the sealing port and the sampling line, and the second seal is configured to seal the sealing port and the sampling line.

[0013] In an embodiment, the cooling medium comprises at least one of polysiloxane, mineral oil defoamer, and siloxane.

[0014] In an embodiment, the heat dissipation assembly comprises a plurality of fins and a base, the base is arranged in the mounting groove, a plurality of the fins are arranged on a side of the base away from the cabinet, and the fins are arranged in a first direction, and the fins are configured to dissipate heat of the battery monomers to the outside of the cabinet.

[0015] In an embodiment, the cabinet is made of cast aluminum material, a side of the base away from the fins has a first contact plane, the base abuts against the mounting groove through the first contact plane, and in the first direction, a length of the first contact plane is smaller than a length of the mounting groove.

[0016] The utility model further provides a battery cabinet which comprises the battery device of the above-mentioned embodiments.

[0017] The technical scheme of the utility model improves the heat dissipation area of the first heat transfer part in contact with the cooling medium, so that the heat dissipation assembly, the first heat transfer part and the cooling medium can dissipate heat of the battery monomers to the outside of the cabinet, thereby avoiding uneven heating of the battery monomers, improving the heat dissipation effect of the battery monomers, and prolonging the service life of the battery monomers. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below only constitute some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative labor.

[0019] Figure 1 The structure sectional view of the battery device provided by the present application is shown in the embodiment.

[0020] Figure 2 The structure top view of the battery device provided by the present application is shown in the embodiment.

[0021] Figure 3 The structure side view of the battery device provided by the present application is shown in the embodiment.

[0022] Explanation of reference signs:

[0023] 1, casing; 11, cooling cavity; 12, first heat transfer part; 13, mounting groove; 14, upper cover; 141, second heat transfer part; 1411, cavity; 15, shell; 2, battery monomer; 3, heat dissipation assembly; 31, fin; 32, base; 321, first contact plane.

[0024] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments only constitute some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0026] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture, and if the specific posture changes, the directional indications also change accordingly.

[0027] In addition, if the description of "first", "second" and the like is involved in the embodiments of the utility model, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, also not within the protection scope required by the utility model.

[0028] The utility model provides a kind of battery device.

[0029] Please refer to Figures 1 to 3 In an embodiment of the utility model, the battery device includes shell 1, battery monomer 2, heat dissipation component 3;The shell 1 has cooling cavity 11, the cooling cavity 11 is filled with cooling medium, the inner side wall of the shell 1 is formed with first heat transfer part 12 towards the cooling cavity 11, the outer side wall of the shell 1 is recessed to form mounting groove 13 towards the cooling cavity 11 against the first heat transfer part 12;The battery monomer 2 is located in the cooling cavity 11, the battery monomer 2 is immersed in the cooling medium;And at least part of heat dissipation component 3 is arranged in the mounting groove 13;The first heat transfer part 12 contacts with the cooling medium, to transfer the heat of the battery monomer 2 to the heat dissipation component 3, and the heat dissipation component 3 is used to heat the heat of the battery monomer 2 to the shell 1.

[0030] The technical scheme of the utility model installs at least part of heat dissipation component 3 in mounting groove 13, by setting the inner side wall of shell 1 to form first heat transfer part 12 towards cooling cavity 11, to improve the heat dissipation area of the contact between first heat transfer part 12 and cooling medium, so that heat dissipation component 3 cooperates with first heat transfer part 12 and cooling medium to heat the heat of battery monomer 2 to the shell 1, to avoid uneven heating of battery monomer 2, to improve the heat dissipation effect of battery monomer 2, to improve the service life of battery monomer 2.

[0031] In the embodiment, the battery cells 2 can be arranged in multiple, and the multiple battery cells 2 can be connected in series, and the multiple battery cells 2 connected in series can form a battery module. The battery module can be arranged in multiple, and the voltage of the battery device is further improved, and more different devices are further adapted to the application. The shell 1 has a cooling cavity 11 for placing the battery module and filling the cooling medium, so that the battery cells 2 or the battery module adopt the cooling medium immersion mode for heat dissipation, thereby avoiding the top and bottom temperature difference between the battery cells 2 in the battery module being too large, thereby ensuring the consistency of the temperature difference between the battery cells 2, thereby improving the cycle life of the battery cells 2. The inner side wall of the shell 1 is provided with a first heat transfer part 12, and the outer side wall of the shell 1 opposite to the first heat transfer part 12 is recessed to form a mounting groove 13, so that the heat dissipation assembly 3 is more conveniently assembled in the mounting groove 13, and the heat dissipation area of the heat dissipation assembly 3 and the first heat transfer part 12 is further improved. The side of the first heat transfer part 12 close to the cooling medium has a second contact plane, and the first heat transfer part 12 contacts the cooling medium through the second contact plane, thereby improving the contact area of the first heat transfer part 12 and the cooling medium, and further improving the heat transfer efficiency of the heat of the battery cells 2 to the heat dissipation assembly 3 through the cooling medium and the first heat transfer part 12, thereby improving the heat dissipation efficiency of the heat dissipation assembly 3.

[0032] As shown in Figure 1 The shell 1 includes an upper cover 14 and a shell 15, the top end of the shell 15 has an opening, the upper cover 14 covers the opening, the upper cover 14 is recessed to form the first heat transfer part 12 close to the opening, the outer side wall of the upper cover 14 opposite to the first heat transfer part 12 is recessed to form the mounting groove 13 towards the cooling cavity 11, and the shell 15 has the cooling cavity 11.

[0033] In the embodiment, the upper cover 14 is arranged to cover the opening, thereby improving the air tightness of the shell 1. The shell 15 is made of cast aluminum material, so that the cooling medium can dissipate the heat of the battery cells 2 to the outside through the shell 15, thereby improving the heat dissipation efficiency of the battery cells 2. In order to further improve the air tightness of the shell 15 and the structural strength of the shell 15, the splicing parts of the shell 15 are processed by full welding process. The first heat transfer part 12 and the mounting groove 13 are arranged on the upper cover 14, and the heat dissipation assembly 3 is arranged in the mounting groove 13, so that the bottom end of the heat dissipation assembly 3 contacts the first heat transfer part 12, thereby facilitating the installation of the heat dissipation assembly 3, and facilitating the heat transfer part 12 to transfer heat to the heat dissipation assembly 3. The heat of the battery cells 2 is transferred to the outside through the cooling medium, the first heat transfer part 12 and the heat dissipation assembly 3, thereby improving the heat dissipation efficiency of the battery cells 2.

[0034] As shown in Figure 1As shown, two sides of the upper cover 14 are respectively provided with a second heat transfer part 141 connected with the first heat transfer part 12, the second heat transfer part 141 is located above the first heat transfer part 12, and the first heat transfer part 12 is arranged between the two second heat transfer parts 141, and a cavity 1411 in communication with the cooling cavity 11 is formed between the inner side wall of the second heat transfer part 141 and the inner side wall of the shell 15.

[0035] In the embodiment, the cavity 1411 in communication with the cooling cavity 11 is formed between the inner side wall of the second heat transfer part 141 and the inner side wall of the shell 15, so that the cooling medium can be in contact with the first heat transfer part 12 and the second heat transfer part 141 at the same time in the cavity 1411, thereby increasing the contact area of the upper cover 14 and the cooling medium, and further enabling the cooling medium to quickly dissipate heat to the external environment through the first heat transfer part 12, the second heat transfer part 141 and the heat dissipation assembly 3, thereby improving the heat dissipation efficiency of the battery monomer 2.

[0036] In the embodiment, the battery device further comprises a first sealing member (not shown), which is arranged at the connection between the upper cover 14 and the shell 15, and is used for sealing the upper cover 14 and the shell 15. The first sealing member can be a sealing ring, a sealing strip or a rubber ring, etc. The upper cover 14 is sealingly connected to the shell 15 through the first sealing member, thereby improving the air tightness of the upper cover 14 and the shell 15.

[0037] In the embodiment, the battery device further comprises a battery management system and a battery sampling assembly, the battery management system comprises a battery management circuit board, the battery sampling assembly is electrically connected with the battery monomer 2 and the battery management circuit board respectively, the battery sampling assembly is used for collecting voltage signals and / or temperature signals of the battery monomer 2, and transmitting the collected signals to the battery management circuit board, and the battery management circuit board is used for controlling the battery monomer 2.

[0038] In the embodiment, the battery sampling assembly is used to collect the use state parameters of the battery monomer 2 and feed back to the battery management circuit board, so that the battery management circuit board can timely adjust the discharge power of the battery monomer 2 according to the use state parameters of the battery monomer 2, thereby reducing the situation that the battery monomer 2 loses control due to overheating, and prolonging the service life of the battery monomer 2.

[0039] In the embodiment, the battery device further comprises a second sealing member, the upper cover 14 has a sealing port for connecting the sampling line of the battery monomer 2 to the battery sampling assembly, and the second sealing member is filled between the sealing port and the sampling line, and is used for sealing the sealing port and the sampling line.

[0040] In the embodiment, the battery sampling assembly can include a sampling circuit board arranged outside the casing 1, so as to facilitate the user to install and dismount, and to facilitate the user to know the use state parameters of the battery monomer 2. The second sealing member can be a sealing ring, a sealing strip or a rubber ring, and the sampling line is sealed and connected to the sealing opening through the second sealing member, so as to improve the air tightness of the sampling line and the casing 1.

[0041] In the embodiment, the cooling medium includes at least one of polysiloxane, mineral oil defoamer and siloxane, so that the cooling medium has the characteristics of extremely low volatility, high thermal conductivity and low cost, thereby the cooling medium can be well preserved in the cooling cavity 11, so as to simplify the sealing structure between the upper cover 14 and the shell 15, thereby the battery device does not need to be injected with cooling medium and maintained during the whole life cycle, thereby the production cost and use cost of the application are reduced. The cooling medium also has a flash point greater than 350℃ and is non-flammable, thereby ensuring the inhibition of the battery module in the case of overheating, thereby reducing the use of fire-fighting medium, and thereby reducing the fire-fighting design cost.

[0042] As shown in Figure 1 and Figure 3 The heat dissipation assembly 3 includes a plurality of fins 31 and a base 32, the base 32 is arranged in the mounting groove 13, and a plurality of fins 31 are arranged on the side of the base 32 away from the casing 1, and a plurality of fins 31 are arranged in the first direction, and the fins 31 are used to dissipate heat of the battery monomer 2 to the outside of the casing 1.

[0043] In the embodiment, the heat dissipation assembly 3 includes a plurality of fins 31 and a base 32, and a plurality of fins 31 are arranged in the first direction, so as to increase the heat dissipation area of the heat dissipation assembly 3, and thereby improve the heat dissipation efficiency of the heat dissipation assembly 3.

[0044] As shown in Figure 1 The casing 1 is made of cast aluminum material, and the side of the base 32 away from the fin 31 has a first contact plane 321, and the base 32 abuts against the mounting groove 13 through the first contact plane 321, and in the first direction, the length of the first contact plane 321 is smaller than the length of the mounting groove 13.

[0045] In the embodiment, the casing 1 is made of cast aluminum material, so that part of the heat generated by the battery monomer 2 can be dissipated through the casing 1. The base 32 is arranged to abut against the mounting groove 13 through the first contact plane 321, so that the base 32 and the mounting groove 13 are more closely attached, thereby improving the heat conduction efficiency between the base 32 and the first heat transfer part 12. In the first direction, the length of the first contact plane 321 is smaller than the length of the mounting groove 13, thereby improving the contact area of the base 32 and the mounting groove 13, and further improving the heat dissipation area of the heat dissipation assembly 3 and the first heat transfer part 12, and further improving the heat dissipation efficiency of the heat dissipation assembly 3.

[0046] The utility model discloses still propose a kind of battery cabinet, the battery cabinet includes battery device, the specific structure of the battery device refers to above-mentioned embodiment, since the battery cabinet has adopted all technical solutions of above-mentioned all embodiments, at least have all beneficial effects brought by the technical scheme of above-mentioned embodiment, here no longer one by one elaboration. Among them, the overall cooling process of battery device is: when battery monomer 2 is in heating state in charging and discharging process, the heat on battery monomer 2 is dissipated to external environment through cooling medium, first heat transfer part 12 and heat dissipation assembly 3. When battery device is installed in battery cabinet interior, the whole battery device is directly blown to through heat exchange equipment (such as heat dissipation fan) or air conditioner integrated in battery cabinet, so that heat dissipation assembly 3 and casing 1 can respectively dissipate the heat generated by battery monomer 2, to realize the cooling of battery monomer 2.

[0047] The above-mentioned is only the exemplary embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure transformation made by using the utility model specification and drawing contents, or direct / indirect application in other related technical fields is included in the patent protection range of the utility model.

Claims

1. A battery device, characterized by, include: The housing has a cooling cavity filled with a cooling medium. The inner sidewall of the housing protrudes towards the cooling cavity to form a first heat transfer part, and the outer sidewall of the housing opposite to the first heat transfer part is recessed towards the cooling cavity to form a mounting groove. A battery cell is disposed within the cooling chamber and is immersed in the cooling medium; as well as A heat dissipation component, at least a portion of which is disposed within the mounting slot; The first heat transfer section contacts the cooling medium to transfer the heat from the battery cell to the heat dissipation assembly, which dissipates the heat from the battery cell to the outside of the casing.

2. The battery device of claim 1, wherein The housing includes a top cover and an outer shell. The top of the outer shell has an opening, and the top cover closes to the opening. The top cover is recessed towards the side near the opening to form the first heat transfer part. The outer side wall of the top cover opposite to the first heat transfer part is recessed towards the cooling cavity to form the mounting groove. The outer shell has the cooling cavity inside.

3. The battery device of claim 2, wherein The upper cover has a second heat transfer part on each side connected to the first heat transfer part. The second heat transfer part is located above the first heat transfer part, and the first heat transfer part is located between the two second heat transfer parts. A cavity communicating with the cooling chamber is formed between the inner wall of the second heat transfer part and the inner wall of the outer shell.

4. The battery device of claim 2, wherein The battery device further includes a first seal, which is disposed at the connection between the upper cover and the outer casing, and is used to seal the upper cover and the outer casing.

5. The battery device of claim 4, wherein The battery device further includes a battery management system and a battery sampling component. The battery management system includes a battery management circuit board. The battery sampling component is electrically connected to the battery cell and the battery management circuit board respectively. The battery sampling component is used to collect the voltage signal and / or temperature signal of the battery cell and transmit the collected signal to the battery management circuit board. The battery management circuit board is used to control the battery cell.

6. The battery device of claim 5, wherein The battery device further includes a second seal, the upper cover has a sealing opening, the sealing opening is used for the sampling line of the battery cell to connect to the battery sampling assembly, the second seal is filled between the sealing opening and the sampling line, and the second seal is used to seal the sealing opening and the sampling line.

7. The battery device of claim 1, wherein The heat dissipation assembly includes multiple fins and a base. The base is disposed in the mounting groove, and the multiple fins are disposed on the side of the base away from the housing. The multiple fins are spaced apart along a first direction, and the fins are used to dissipate heat from the battery cell to the outside of the housing.

8. The battery device of claim 7, wherein The housing is made of cast aluminum. The base has a first contact plane on the side opposite to the fins. The base abuts against the mounting groove through the first contact plane. Along the first direction, the length of the first contact plane is smaller than the length of the mounting groove.

9. A battery cabinet characterized by Includes the battery device as described in any one of claims 1 to 8.

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