CN219917295U - Battery system - Google Patents

Abstract

The embodiment of the utility model discloses a battery system. The battery system comprises a box body, a battery module, a BMS assembly, a converter module and a box cover, wherein the box body forms a first accommodating cavity, a first cooling structure is arranged at the bottom of the box body, the battery module is located in the first accommodating cavity, the BMS assembly and the converter module are sequentially located on one side, deviating from the bottom of the box body, of the battery module, the BMS assembly is electrically connected with the battery module, the converter module is electrically connected with the BMS assembly, a second cooling structure is arranged between the converter module and the BMS assembly, and the box cover is connected with the box body to seal the battery module, the BMS assembly and the converter module. According to the utility model, the cooling structure is arranged at the bottom of the battery module and between the BMS component and the converter module to form a double cooling mode, so that heat generated by chips in the BMS component and the converter module can be taken away while the battery module is cooled, and the overall cooling effect of the battery system is improved.

Description

Battery system

Technical Field

The utility model relates to the field of batteries, in particular to a battery system.

Background

With the rapid growth of population and rapid development of socioeconomic performance, resources and energy are increasingly in shortage, environmental protection is increasingly emphasized, and energy development and saving are an important issue in the world today. Energy is the basis for the existence and development of human society, and modern society based on mineral energy is increasingly frequently subjected to energy deficiency and environmental pollution crisis. Meanwhile, with the advent of the informationized high-tech age, energy application forms are changing, and the demand for renewable and pollution-free high-performance power supplies is rapidly increasing. The lithium ion battery as a novel secondary battery has the advantages of high energy density and power density, high working voltage, long cycle life, environmental protection and the like, and has wide application prospect in the aspects of large energy storage, electric traffic power supply and the like. At present, when the lithium ion battery is assembled to form a battery system, the DCDC exchanger, the BMS component and the battery module can be integrated together, but the heat dissipation effect of the existing battery system is poor, and the service performance of the battery system is affected.

Disclosure of Invention

The embodiment of the utility model provides a battery system, which can solve the problem that the service performance of the battery system is affected due to poor heat dissipation effect of the traditional battery system.

An embodiment of the present utility model provides a battery system including:

the box body is provided with a first accommodating cavity, and a first cooling structure is arranged at the bottom of the box body;

the battery module is positioned in the first accommodating cavity;

the BMS component is positioned on one side of the battery module, which is away from the bottom of the box body, and is electrically connected with the battery module;

the converter module is positioned on one side of the BMS component, which is away from the battery module, and is electrically connected with the BMS component; a second cooling structure is arranged between the converter module and the BMS component;

and the case cover is connected with the case body to seal the battery module, the BMS assembly and the converter module.

Optionally, in some embodiments of the present utility model, the case has a bottom plate and a side plate, and the side plate and the bottom plate enclose the first accommodating cavity; the bottom plate is internally provided with a first cooling channel, the side plate is provided with a first cooling inlet and a first cooling outlet which are communicated with the first cooling channel, and the first cooling channel, the first cooling inlet and the first cooling outlet form the first cooling structure.

Optionally, in some embodiments of the present utility model, a heat conducting layer is disposed between the battery module and the bottom plate; the thickness of the heat conduction layer is greater than or equal to 1mm and less than or equal to 2mm.

Optionally, in some embodiments of the present utility model, the cover includes a support frame and a cover, one side of the support frame is connected to the cover, and the other side of the support frame is connected to the cover; the BMS assembly and the converter module are respectively connected to opposite sides of the support frame, on which the second cooling structure is formed.

Optionally, in some embodiments of the present utility model, the support frame includes a support plate and a border connected to each other, and the support plate and the border enclose to form a second accommodating cavity, and the second accommodating cavity is communicated with the first accommodating cavity; the BMS component is positioned in the second accommodating cavity and connected with one side of the supporting plate facing the box body, and the converter module is connected with one side of the supporting plate facing away from the box body; the support plate is internally provided with a second cooling channel, the frame is provided with a second cooling inlet and a second cooling outlet which are communicated with the second cooling channel, and the second cooling channel, the second cooling inlet and the second cooling outlet form the second cooling structure.

Optionally, in some embodiments of the utility model, a first insulating heat conducting plate is connected between the converter module and the support plate; and/or a second insulating heat conducting plate is connected between the BMS component and the supporting plate.

Optionally, in some embodiments of the present utility model, the battery system includes a first copper bar assembly, a first opening is formed in the support plate, one end of the first copper bar assembly is electrically connected to the BMS assembly, and the other end of the first copper bar assembly is electrically connected to the converter module through the first opening.

Optionally, in some embodiments of the present utility model, an output electrode is disposed on a side of the support frame facing away from the case, a second opening is disposed on the support frame at a position corresponding to the output electrode, and the output electrode extends into the opening; the battery system comprises a second copper bar assembly, one end of the second copper bar assembly is electrically connected with the BMS assembly, and the other end of the second copper bar assembly is electrically connected with the output electrode.

Optionally, in some embodiments of the present utility model, a first groove is formed on a side of the case body facing the case cover, a first protrusion is protruding on a side of the case cover facing the case body, where the position corresponds to the first groove, and the first protrusion is inserted into the first groove, so that the case cover is connected with the case body in a sealing manner; and/or the number of the groups of groups,

the box cover is provided with a first groove, a first protrusion is arranged on one side of the box cover, which faces the box cover, and a second protrusion is arranged on one side of the box cover, which faces the box cover, and corresponds to the position of the first groove.

Optionally, in some embodiments of the present utility model, a third groove is formed on a side of the support frame facing the cover body, a third protrusion is protruding on a side of the cover body facing the support frame, where the position corresponds to the third groove, and the third protrusion is inserted into the third groove, so that the cover body is connected with the support frame in a sealing manner; and/or the number of the groups of groups,

the cover body is provided with a fourth groove facing one side of the support frame, a fourth bulge is arranged on one side of the support frame facing the cover body in a protruding mode at the position corresponding to the fourth groove, and the fourth bulge is inserted into the fourth groove so that the cover body is in sealing connection with the support frame.

The battery system comprises a box body, a battery module, a BMS component, a converter module and a box cover, wherein a first accommodating cavity is formed in the box body, a first cooling structure is arranged at the bottom of the box body, the battery module is located in the first accommodating cavity, the BMS component is located at one side, deviating from the bottom of the box body, of the battery module, the BMS component is electrically connected with the battery module, the converter module is located at one side, deviating from the battery module, of the BMS component, the converter module is electrically connected with the BMS component, a second cooling structure is arranged between the converter module and the BMS component, and the box cover is connected with the box body to seal the battery module, the BMS component and the converter module. According to the utility model, the cooling structure is arranged at the bottom of the battery module and between the BMS component and the converter module to form a double cooling mode, so that heat generated by chips in the BMS component and the converter module can be taken away while the battery module is cooled, the overall cooling effect of the battery system is improved, and the service performance of the battery system is ensured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of an assembled structure of a battery system according to an embodiment of the present utility model;

fig. 2 is a schematic cross-sectional view of a battery system according to an embodiment of the present utility model;

fig. 3 is an exploded view of a battery system according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a supporting frame according to an embodiment of the present utility model;

fig. 5 is a schematic cross-sectional view of a support frame according to an embodiment of the present utility model.

Reference numerals illustrate:

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model. Furthermore, it should be understood that the detailed description is presented herein for purposes of illustration and description only, and is not intended to limit the utility model. In the present utility model, unless otherwise indicated, terms of orientation such as "upper" and "lower" are used to generally refer to the upper and lower positions of the device in actual use or operation, and specifically the orientation of the drawing figures; while "inner" and "outer" are for the outline of the device.

The embodiment of the utility model provides a battery system, which is described in detail below. The following description of the embodiments is not intended to limit the preferred embodiments.

First, as shown in fig. 1 and 3, the battery system 100 includes a case 110 and a battery module 120, the battery module 120 can be formed by connecting a plurality of square-case batteries in series and parallel, the case 110 is formed with a first accommodating cavity 111, the battery module 120 is located in the first accommodating cavity 111, and a first cooling structure 114 is disposed at the bottom of the case 110, that is, the first cooling structure 114 is disposed at the bottom of the battery module 120. In the use process of the battery system 100, the battery module 120 generates a large amount of heat after multiple charging and discharging, and the first cooling structure 114 arranged at the bottom of the case 110 can effectively take away the heat, so as to avoid thermal runaway caused by overhigh temperature of the battery module 120 and influence the use safety of the battery system 100.

The battery system 100 includes a BMS assembly 130, the BMS assembly 130 is positioned at a side of the battery module 120 facing away from the bottom of the case 110, and the BMS assembly 130 is electrically connected with the battery module 120. The BMS module 130 is a battery management system, and is configured to monitor information such as voltage and temperature of the battery module 120, and intelligently manage and maintain each battery unit of the battery module 120, so as to ensure stable operation of the battery module 120.

The battery system 100 includes a converter module 140, the converter module 140 is located at a side of the BMS assembly 130 facing away from the battery module 120, the converter module 140 is electrically connected with the BMS assembly 130, and a second cooling structure 1514 is provided between the converter module 140 and the BMS assembly 130. The converter module 140 can be a DCDC converter, which is a dc conversion device for converting a dc base power source into other voltage types, so as to meet the use requirements of the battery system 100 under different conditions.

During the use of the battery system 100, the chip structures in the BMS assembly 130 and the converter module 140 generate a lot of heat, which may cause damage to the BMS assembly 130 and the converter module 140 if not timely dissipated. By disposing the second cooling structure 1514 between the converter module 140 and the BMS assembly 130, the converter module 140, the second cooling structure 1514 and the BMS assembly 130 are integrally formed into a sandwich structure, i.e., the converter module 140 and the BMS assembly 130 can be simultaneously cooled through the second cooling structure 1514, so as to improve the use performance of the battery system 100.

The battery system 100 further includes a case cover 150, and the case cover 150 is connected with the case body 110 to seal the battery module 120, the BMS assembly 130, and the converter module 140, i.e., the case body 110 and the case cover 150 together form a sealing body, so that the battery system 100 is entirely used in a stable environment, to prevent the external environment from interfering with the battery module 120, the BMS assembly 130, or the converter module 140, thereby ensuring stable use of the battery system 100.

In the embodiment of the utility model, the battery system 100 includes a case 110, a battery module 120, a BMS assembly 130, a converter module 140 and a case cover 150, the case 110 is formed with a first accommodating cavity 111, a first cooling structure 114 is disposed at the bottom of the case 110, the battery module 120 is located in the first accommodating cavity 111, the BMS assembly 130 is located at one side of the battery module 120 facing away from the bottom of the case 110, the BMS assembly 130 is electrically connected with the battery module 120, the converter module 140 is located at one side of the BMS assembly 130 facing away from the battery module 120, the converter module 140 is electrically connected with the BMS assembly 130, a second cooling structure 1514 is disposed between the converter module 140 and the BMS assembly 130, and the case cover 150 is connected with the case 110 to seal the battery module 120, the BMS assembly 130 and the converter module 140. According to the utility model, the cooling structure is arranged at the bottom of the battery module 120 and between the BMS assembly 130 and the converter module 140 to form a double cooling mode, so that heat generated by chips in the BMS assembly 130 and the converter module 140 can be taken away while the battery module 120 is cooled, the whole cooling effect of the battery system 100 is improved, and the service performance of the battery system 100 is ensured.

Optionally, the case 110 has a bottom plate 112 and a side plate 113, and the side plate 113 and the bottom plate 112 enclose a first accommodating cavity 111. A first cooling channel 1141 is formed in the bottom plate 112, and a first cooling inlet 1142 and a first cooling outlet 1143 which are in communication with the first cooling channel 1141 are formed on the side plate 113, and the first cooling channel 1141, the first cooling inlet 1142 and the first cooling outlet 1143 form a first cooling structure 114.

Because the battery module 120 is disposed on the bottom plate 112 of the case 110, the first cooling channel 1141 is directly formed in the bottom plate 112 of the case 110, so that the first cooling channel 1141 can fully cover the bottom surface of the battery module 120, so as to ensure that a sufficient heat exchange area is provided between the battery module 120 and the cooling medium in the first cooling channel 1141, and meanwhile, the number of parts of the battery system 100 can be reduced, which is beneficial to simplifying the assembly of the battery system 100. By disposing the first cooling inlet 1142 and the first cooling outlet 1143 on the side plate 113, the connection between the first cooling structure 114 and the external cooling system is facilitated, and a corresponding cooling channel can be formed on the side plate 113 according to the actual heat dissipation requirement, so as to further improve the heat dissipation effect of the battery module 120.

In some embodiments, a heat conducting layer 160 is disposed between the battery module 120 and the bottom plate 112, and the heat conducting layer 160 can rapidly conduct out the heat generated in the use process of the battery system 100, and then exchange heat through the cooling medium in the first cooling channel 1141, so as to improve the heat exchange efficiency of the battery module 120. The heat conducting layer 160 may be a heat conducting sheet adhered to the bottom end of the battery module 120 or the bottom plate 112 of the case 110, or may be a heat conducting adhesive coated on the bottom end of the battery module 120 or the bottom plate 112 of the case 110, or may be other structures with heat conducting capability, so long as the heat conducting layer 160 is ensured to be arranged to effectively improve the heat exchanging effect of the battery module 120, and no special limitation is made herein.

Wherein the thickness of the heat conductive layer 160 is greater than or equal to 1mm and less than or equal to 2mm. If the thickness of the heat conducting layer 160 is too large, the volume ratio of the battery module 120 in the battery system 100 is affected, so that the energy density design of the battery system 100 is affected; if the thickness of the heat conducting layer 160 is too small, the heat conducting layer 160 cannot perform an effective heat conducting function, and thus the purpose of improving the heat exchange efficiency of the battery module 120 cannot be achieved.

In the actual manufacturing process, the thickness of the heat conducting layer 160 can be set to be 1mm, 1.2mm, 1.5mm, 1.8mm or 2mm, etc., and the specific thickness value thereof can be adaptively adjusted according to the actual use requirement, so that the heat exchanging efficiency of the battery module 120 can be effectively improved without affecting the overall design of the battery system 100, and the method is not particularly limited.

Optionally, the case cover 150 includes a support frame 151 and a cover 152, one side of the support frame 151 is connected with the case 110, and the other side of the support frame 151 is connected with the cover 152, i.e., the case 110, the support frame 151, and the cover 152 are sequentially hermetically connected to implement the encapsulation of the battery module 120, the BMS assembly 130, and the converter module 140.

Wherein, the BMS assembly 130 and the converter module 140 are respectively connected to opposite sides of the support frame 151, and the support frame 151 is formed with a second cooling structure 1514, i.e., the support frame 151 serves to both mount and support the BMS assembly 130 and the converter module 140 and also provides a passage for cooling of the BMS assembly 130 and the converter module 140. By dividing the case cover 150 into two parts, i.e., the support frame 151 and the cover 152, it is possible to facilitate the assembly of the BMS assembly 130 and the converter module 140 and to simultaneously dissipate heat of the BMS assembly 130 and the converter module 140.

In some embodiments, as shown in fig. 4 and 5, the support frame 151 includes a support plate 1512 and a rim 1513 coupled to each other, the support plate 1512 and the rim 1513 enclosing to form a second receiving cavity 1511, the second receiving cavity 1511 being in communication with the first receiving cavity 111, the BMS assembly 130 being positioned within the second receiving cavity 1511 and coupled to a side of the support plate 1512 facing the case 110, and the converter module 140 being coupled to a side of the support plate 1512 facing away from the case 110. Wherein a second cooling channel 1514a is formed in the support plate 1512, a second cooling inlet 1514b and a second cooling outlet 1514c are formed on the frame 1513 in communication with the second cooling channel 1514a, and the second cooling channel 1514a, the second cooling inlet 1514b, and the second cooling outlet 1514c constitute a second cooling structure 1514.

That is, the BMS assembly 130, the support plate 1512 and the converter module 140 together form a sandwich structure to achieve simultaneous heat dissipation of the cooling medium in the second cooling channel 1514a of the support plate 1512 to the BMS assembly 130 and the converter module 140. By forming the second cooling channels 1514a directly within the support plate 1512, the cooling medium within the second cooling channels 1514a is enabled to perform surface-to-surface heat exchange with the chip structures in the BMS assembly 130 and the converter module 140 to ensure heat exchange efficiency.

By providing the second cooling inlet 1514b and the second cooling outlet 1514c on the bezel 1513, connection of the second cooling structure 1514 to an external cooling system is facilitated; meanwhile, since the first cooling inlet 1142 and the first cooling outlet 1143 are provided on the side plate 113 of the case 110, the first cooling inlet 1142, the first cooling outlet 1143, the second cooling inlet 1514b and the second cooling outlet 1514c can be provided on the same side of the battery system 100, thereby facilitating the integrated design of the first cooling structure 114 and the second cooling structure 1514 with the external cooling system.

In other embodiments, as shown in fig. 2, a first insulating heat conducting plate 170 is connected between the converter module 140 and the support plate 1512, that is, the first insulating heat conducting plate 170 is bonded on the side of the support plate 1512 facing away from the case 110, and then the converter module 140 is bonded on the side of the first insulating heat conducting plate 170 facing away from the support plate 1512, so as to achieve insulation between the converter module 140 and the support plate 1512; meanwhile, the first insulating heat conductive plate 170 can also conduct out heat generated during operation of the converter module 140, so that the cooling medium in the second cooling channel 1514a in the support plate 1512 can rapidly take away the heat, thereby improving heat dissipation efficiency of the converter module 140.

In still other embodiments, a second insulating heat conductive plate 180 is connected between the BMS assembly 130 and the support plate 1512, i.e., the second insulating heat conductive plate 180 is bonded to the side of the support plate 1512 facing the case 110, and then the BMS assembly 130 is bonded to the side of the second insulating heat conductive plate 180 facing away from the support plate 1512, so as to achieve insulation between the BMS assembly 130 and the support plate 1512; meanwhile, the second insulating heat conductive plate 180 can also discharge heat generated when the BMS assembly 130 is operated, so that the cooling medium in the second cooling channel 1514a in the support plate 1512 can rapidly take away the heat, thereby improving the heat dissipation efficiency of the BMS assembly 130.

Alternatively, as shown in fig. 2 and 3, the battery system 100 includes a first copper bar assembly 190, a first opening 1515 is formed in the support frame 151, one end of the first copper bar assembly 190 is electrically connected with the BMS assembly 130, and the other end of the first copper bar assembly 190 is electrically connected with the converter module 140 through the first opening 1515. Since the BMS assembly 130 and the converter module 140 are disposed at opposite sides of the support frame 151, respectively, it is necessary to provide a first opening 1515 on the support member so that the first copper bar assembly 190 can electrically connect the BMS assembly 130 and the converter module 140 through the first opening 1515.

The first copper bar assembly 190 may be composed of a plurality of C-shaped copper bars, one end of each C-shaped copper bar is connected with the BMS assembly 130 by a patch, the other end of each C-shaped copper bar is fixedly connected with the converter module 140 by bolts, and connection positions of the C-shaped copper bars are correspondingly adjusted according to circuit designs on the BMS assembly 130 and the converter module 140, so that conduction of an input/output circuit between the BMS assembly 130 and the converter module 140 is only required.

It should be noted that, the first copper bar assembly 190 may also be formed by a plurality of Z-shaped copper bars, or may be formed by mixing a C-shaped copper bar and a Z-shaped copper bar, and the specific structure thereof may be designed in an adaptive manner according to the actual connection requirement, which is not limited in particular herein.

Optionally, an output electrode 220 is disposed on a side of the supporting frame 151 facing away from the case 110, a second opening 1516 is disposed on the supporting frame 151 corresponding to the position of the output electrode 220, and the output electrode 220 extends into the opening; the battery system 100 includes a second copper bar assembly 200, one end of the second copper bar assembly 200 is electrically connected with the BMS assembly 130, and the other end of the second copper bar assembly 200 is electrically connected with the output electrode 220. The output electrode 220 serves as a bridge for connecting the battery system 100 and external devices, and the external devices and the internal battery module 120 can be connected by electrically connecting the output electrode 220 and the BMS assembly 130, thereby enabling the battery system 100 to be put into use.

The second copper bar assembly 200 can be composed of a plurality of L-shaped copper bars, one end of each L-shaped copper bar is connected with the BMS assembly 130 in an inserting mode, the other end of each L-shaped copper bar is connected with the output electrode 220 in a bolt fastening mode, and connection positions of the L-shaped copper bars can be correspondingly adjusted according to circuit designs on the BMS assembly 130 and setting positions of the output electrodes 220, so that conduction of a circuit between the BMS assembly 130 and the output electrodes 220 is only required to be guaranteed.

It should be noted that, in the embodiment of the present utility model, the bolts used for fixedly connecting the second copper bar assembly 200 and the output electrode 220 may be formed by plastic sleeve tablet, so that the output electrodes 220 connected with different L-shaped copper bars may be isolated from each other in an insulating manner, so as to avoid the occurrence of faults of the battery system 100 due to short circuit of the output electrode 220, and thus ensure stable use of the battery system 100.

Optionally, the battery system 100 includes a third copper bar assembly 210, one end of the third copper bar assembly 210 is electrically connected with the output terminal of the battery module 120, and the other end of the third copper bar assembly 210 is electrically connected with the BMS assembly 130. The output end of the battery module 120 includes an anode output end and a cathode output end, the third copper bar assembly 210 includes an anode output copper bar and a cathode output copper bar, the anode output copper bar is used for connecting the anode output end and the BMS assembly 130, and the cathode output copper bar is used for connecting the cathode output end and the BMS assembly 130, so that monitoring and management of information such as voltage and temperature of the battery module 120 by the BMS assembly 130 are achieved.

It should be noted that, the third copper bar assembly 210, the battery module 120 and the BMS assembly 130 can be fixedly connected by using a bolt fastening manner, so as to facilitate assembly; the specific structure of the third copper bar assembly 210 can be designed and adjusted according to the relative positions of the positive output end and the negative output end of the battery module 120 and the BMS assembly 130, such as Z-type or C-type, and the like, which is not particularly limited herein.

Optionally, a first groove 115 is formed on a side of the case body 110 facing the case cover 150, and a first protrusion 1517 is protruding on a side of the case cover 150 facing the case body 110 corresponding to the first groove 115, and the first protrusion 1517 is inserted into the first groove 115, so that the case cover 150 is connected with the case body 110 in a sealing manner. The space between the first protrusion 1517 and the first groove 115 is further filled with a sealant, that is, a dispensing sealing manner of a convex groove is adopted between the case cover 150 and the case 110, so as to improve the tightness of the battery system 100. In addition, the assembly of the cover 150 and the case 110 can be positioned by the cooperation of the first protrusion 1517 and the first groove 115, so that the cover 150 and the case 110 can be precisely and rapidly mounted.

In some embodiments, a second groove is formed on a side of the case cover 150 facing the case body 110, and a second protrusion is formed on a side of the case body 110 facing the case cover 150 at a position corresponding to the second groove, and the second protrusion is inserted into the second groove, so that the case cover 150 is in sealing connection with the case body 110. The sealant is filled between the second protrusion and the second groove, that is, the sealant dispensing sealing mode of the convex groove is adopted between the case cover 150 and the case body 110, so as to improve the tightness of the battery system 100. In addition, the assembly of the case cover 150 and the case body 110 can be positioned by the cooperation of the second protrusion and the second groove, so that the case cover 150 and the case body 110 can be accurately and rapidly mounted.

It should be noted that, the arrangement of the corresponding grooves and protrusions on the case cover 150 and the case body 110 can be adjusted according to the actual structural design requirement, and only the effective sealing between the case cover 150 and the case body 110 is ensured, which is not limited in particular.

Optionally, a third groove 1518 is formed on a side of the support frame 151 facing the cover body 152, and a third protrusion 1521 is protruding on a side of the cover body 152 facing the support frame 151 corresponding to the position of the third groove 1518, where the third protrusion 1521 is inserted into the third groove 1518, so that the cover body 152 is in sealing connection with the support frame 151. The third protrusion 1521 and the third groove 1518 are further filled with a sealant, that is, a dispensing sealing manner with a convex groove is adopted between the cover 152 and the supporting frame 151, so as to improve the tightness of the battery system 100. In addition, the assembly of the cover 152 and the support frame 151 can be positioned by the cooperation of the third protrusion 1521 and the third groove 1518, so as to facilitate the accurate and rapid installation of the cover 152 and the support frame 151.

In some embodiments, a fourth groove is formed on a side of the cover 152 facing the supporting frame 151, and a fourth protrusion is formed on a side of the supporting frame 151 facing the cover 152 at a position corresponding to the fourth groove, and the fourth protrusion is inserted into the fourth groove, so that the cover 152 is in sealing connection with the supporting frame 151. The fourth protrusion and the fourth groove are filled with sealant, that is, a sealant dispensing sealing manner of a convex groove is adopted between the supporting frame 151 and the cover 152, so as to improve the tightness of the battery system 100. In addition, the assembly of the support frame 151 and the cover 152 can be positioned by the mutual cooperation of the fourth protrusion and the fourth groove, so that the support frame 151 and the cover 152 can be accurately and quickly mounted.

It should be noted that, the arrangement modes of the corresponding grooves and the protrusions on the supporting frame 151 and the cover 152 can be adjusted according to the actual structural design requirement, and only the effective sealing between the supporting frame 151 and the cover 152 is ensured, which is not limited in particular.

The foregoing has outlined a detailed description of a battery system in accordance with the embodiments of the present utility model, wherein specific examples are presented herein to illustrate the principles and embodiments of the present utility model and to assist in understanding the method and core concepts of the present utility model; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present utility model, the present description should not be construed as limiting the present utility model.

Claims (10)

1. A battery system, comprising:

the box body is provided with a first accommodating cavity, and a first cooling structure is arranged at the bottom of the box body;

the battery module is positioned in the first accommodating cavity;

the BMS component is positioned on one side of the battery module, which is away from the bottom of the box body, and is electrically connected with the battery module;

the converter module is positioned on one side of the BMS component, which is away from the battery module, and is electrically connected with the BMS component; a second cooling structure is arranged between the converter module and the BMS component;

and the case cover is connected with the case body to seal the battery module, the BMS assembly and the converter module.

2. The battery system of claim 1, wherein the housing has a bottom plate and a side plate, the side plate and the bottom plate enclosing to form the first receiving cavity; the bottom plate is internally provided with a first cooling channel, the side plate is provided with a first cooling inlet and a first cooling outlet which are communicated with the first cooling channel, and the first cooling channel, the first cooling inlet and the first cooling outlet form the first cooling structure.

3. The battery system according to claim 2, wherein a heat conductive layer is provided between the battery module and the bottom plate; the thickness of the heat conduction layer is greater than or equal to 1mm and less than or equal to 2mm.

4. The battery system of claim 1, wherein the case cover comprises a support frame and a cover, one side of the support frame being connected to the case, the other side of the support frame being connected to the cover; the BMS assembly and the converter module are respectively connected to opposite sides of the support frame, on which the second cooling structure is formed.

5. The battery system of claim 4, wherein the support frame comprises a support plate and a rim connected to each other, the support plate and the rim enclosing to form a second receiving cavity, the second receiving cavity in communication with the first receiving cavity; the BMS component is positioned in the second accommodating cavity and connected with one side of the supporting plate facing the box body, and the converter module is connected with one side of the supporting plate facing away from the box body; the support plate is internally provided with a second cooling channel, the frame is provided with a second cooling inlet and a second cooling outlet which are communicated with the second cooling channel, and the second cooling channel, the second cooling inlet and the second cooling outlet form the second cooling structure.

6. The battery system of claim 5, wherein a first insulating heat conducting plate is connected between the converter module and the support plate; and/or a second insulating heat conducting plate is connected between the BMS component and the supporting plate.

7. The battery system of claim 5, wherein the battery system comprises a first copper bar assembly, wherein a first opening is formed in the support plate, one end of the first copper bar assembly is electrically connected with the BMS assembly, and the other end of the first copper bar assembly passes through the first opening to be electrically connected with the converter module.

8. The battery system according to any one of claims 4 to 7, wherein an output electrode is provided on a side of the support frame facing away from the case, a second opening is provided on the support frame at a position corresponding to the output electrode, and the output electrode extends into the opening; the battery system comprises a second copper bar assembly, one end of the second copper bar assembly is electrically connected with the BMS assembly, and the other end of the second copper bar assembly is electrically connected with the output electrode.

9. The battery system according to any one of claims 1 to 7, wherein a first groove is formed in a side of the case body facing the case cover, a first protrusion is provided on a side of the case cover facing the case body at a position corresponding to the first groove, and the first protrusion is inserted into the first groove to seal the case cover with the case body; and/or the number of the groups of groups,

the box cover is provided with a first groove, a first protrusion is arranged on one side of the box cover, which faces the box cover, and a second protrusion is arranged on one side of the box cover, which faces the box cover, and corresponds to the position of the first groove.

10. The battery system according to any one of claims 4 to 7, wherein a third groove is provided on a side of the support frame facing the cover, a third protrusion is provided on a side of the cover facing the support frame at a position corresponding to the third groove, and the third protrusion is inserted into the third groove to seal the cover with the support frame; and/or the number of the groups of groups,

the cover body is provided with a fourth groove facing one side of the support frame, a fourth bulge is arranged on one side of the support frame facing the cover body in a protruding mode at the position corresponding to the fourth groove, and the fourth bulge is inserted into the fourth groove so that the cover body is in sealing connection with the support frame.