Battery device and electric equipment

Abstract

The utility model relates to the technical field of battery heat exchange, and particularly discloses a battery device and electric equipment.The battery device comprises a box body, a battery monomer assembly and a heat exchanger, the battery monomer assembly and the heat exchanger are arranged in the box body and conduct heat exchange, and the heat exchanger comprises a heat exchange body, a switching part, a current collector and a plugging piece; the heat exchange body comprises a plurality of heat exchange channels, the switching part is arranged at the end of the heat exchange body and provided with switching channels, the switching channels communicate with the heat exchange channels, the current collector is fixed to the switching part and provided with a current collecting cavity, the current collector is provided with a current collecting opening communicating with the current collecting cavity and a plurality of flow dividing openings, and the flow dividing openings communicate with the heat exchange channels through the switching channels. The blocking piece is arranged in the heat exchange body to block the at least one heat exchange channel and / or the blocking piece is arranged on the current collector to block the at least one flow dividing opening. Therefore, at least one heat exchange channel is blocked through the blocking piece, a heat exchange medium is conveniently prevented from entering at least part of the heat exchange channel, and the weight of the heat exchange body is reduced.

Description

[0001] Cross-references to related applications

[0002] This application is based on and claims priority to Chinese patent applications No. 202410501046.5, filed on April 24, 2024, and No. 202420869133.1, filed on April 24, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of battery heat exchange technology, and in particular to a battery device and electrical equipment. Background Technology

[0004] As a rechargeable power source, batteries are increasingly widely used in daily life and industry. When batteries are applied to new energy vehicles, they are mainly used to provide power as the power source for these vehicles.

[0005] In order to maintain the battery device's temperature within a suitable range during use, a heat exchanger is usually installed inside the battery device. However, existing heat exchangers are heavy, which affects the performance of the battery device and the electrical equipment.

[0006] Therefore, how to reduce the weight of heat exchangers is an urgent problem to be solved. Summary of the Invention

[0007] This application aims to at least solve one of the technical problems existing in the prior art. To this end, the first aspect of this application is to provide a battery device that can reduce the weight of the heat exchanger without changing the contact area between the heat exchanger and the battery cell assembly, thereby achieving heat exchange with the battery cell assembly while reducing the weight of the battery device, solving the problem that the heavy weight of the heat exchanger in the prior art affects the performance of the battery device and electrical equipment.

[0008] The second aspect of this application is to provide an electrical device having the aforementioned battery device.

[0009] In a first aspect, the embodiments of the present application provide a battery device, comprising: a box body; a battery monomer assembly arranged in the box body; and a heat exchanger arranged in the box body and configured to exchange heat with the battery monomer assembly; wherein the heat exchanger comprises: a heat exchange body comprising a plurality of heat exchange channels; an adapter arranged at an end of the heat exchange body, the adapter being provided with an adapter channel in communication with the heat exchange channels; and a current collector fixed to the adapter, the current collector being provided with a current collection cavity, a current collection port in communication with the current collection cavity, and a plurality of shunt ports adapted to communicate with the heat exchange channels through the adapter channel; and a blocking member arranged in the heat exchange body to block at least one of the heat exchange channels and / or arranged in the current collector to block at least one of the shunt ports.

[0010] In the technical scheme of the embodiments of the present application, the adapter of the heat exchanger is arranged to comprise an adapter channel, the adapter channel is arranged to communicate with the heat exchange channels, and the shunt ports of the current collector are arranged to communicate with the heat exchange channels through the adapter channel. When the blocking member is arranged in the heat exchange body to block at least one of the heat exchange channels and / or arranged in the current collector to block at least one of the shunt ports, the purpose of blocking the heat exchange channels by the blocking member can be achieved, the difficulty of blocking the heat exchange channels is reduced, and thus the heat exchange medium is prevented from entering at least part of the heat exchange channels, the total content of the heat exchange medium in the heat exchange body is reduced, the weight of the heat exchange body is reduced, and thus the weight of the battery device is reduced and the weight capacity density of the battery device is improved when the heat exchanger is used to exchange heat with the battery monomer assembly.

[0011] In some embodiments, the adapter connects the blocking member and the heat exchange body. The adapter is arranged at the end of the heat exchange body, and the blocking member and the heat exchange body are used to support the adapter at the same time, the position stability of the adapter is improved, and the working performance of the adapter is ensured to a certain extent.

[0012] In some embodiments, the adapter is overmolded on the blocking member and the heat exchange body, so that the adapter, the blocking member, and the heat exchange body form an integral part. In the process of molding the heat exchanger, the blocking member and the heat exchange body are molded first, and then the adapter is integrally molded with the heat exchanger and the blocking member. The connection difficulty of the adapter with the heat exchanger and the blocking member is reduced, the sealing performance and the pressure resistance of the connection between the adapter and the heat exchanger and the blocking member are improved, and the communication between the adapter channel and the heat exchange channel is facilitated.

[0013] In some embodiments, the adapter is a plastic part. On the one hand, the adapter can be overmolded on the heat exchange body, the blocking piece and formed as an integral part with the heat exchange body and the blocking piece, reducing the difficulty of connecting the adapter with the heat exchanger and the blocking piece. On the other hand, the weight of the adapter can be reduced and the manufacturing cost of the adapter can be reduced.

[0014] In some embodiments, the adapter comprises a sleeve ring and an adapter plate, the sleeve ring is sleeved on one end of the heat exchange body, the adapter plate is arranged in the sleeve ring, the adapter channel penetrates through the adapter plate, the sleeve ring is overmolded on the heat exchange body, and the adapter plate is overmolded on the blocking piece. The adapter is overmolded on the blocking piece and the heat exchange body, reducing the difficulty of connecting the adapter with the heat exchanger and the blocking piece.

[0015] In some embodiments, the outer surface of the heat exchange body is provided with a first area, the roughness of the first area is greater than the roughness of the remaining areas, and the first area is in contact with the sleeve ring. In this way, when the adapter is injection molded with the heat exchange body, the first area can be used to increase the bonding force between the heat exchange body and the adapter, thereby increasing the connection strength of the heat exchange body and the adapter, enabling the adapter to be stably arranged on the heat exchange body, increasing the sealing performance and pressure resistance of the connection between the adapter and the heat exchanger, and to some extent, ensuring the working performance of the heat exchanger.

[0016] In some embodiments, the adapter plate is in contact with the end surface of the blocking piece and the heat exchange body, respectively. In this way, the adapter, the blocking piece and the heat exchange body can support each other, improving the structural stability of the heat exchanger as a whole, and to some extent, ensuring the working performance of the heat exchanger.

[0017] In some embodiments, the blocking piece is used to block the heat exchange channel, and a part of the blocking piece protrudes out of the heat exchange channel, so that at least part of the blocking piece protrudes out of the heat exchange channel. Here, when the blocking piece is arranged in the heat exchange body to block the heat exchange channel, at least part of the blocking piece protrudes out of the heat exchange channel. On the one hand, it is convenient to disassemble and assemble the blocking piece. On the other hand, it is also conducive to fixing the blocking piece by using the adapter and / or the current collector, further improving the positional stability of the blocking piece, and to some extent, ensuring the working performance of the blocking piece.

[0018] In some embodiments, the adapter plate is provided with a receiving groove for accommodating the blocking piece. In this way, the part of the blocking piece protruding out of the heat exchange channel can be assembled in the receiving groove of the adapter plate, so as to fix the blocking piece by using the adapter plate, that is, to fix the blocking piece by using the adapter, improve the positional stability of the blocking piece, and to some extent, ensure the working performance of the blocking piece.

[0019] In some embodiments, the adapter is welded to the collector. The adapter and the collector are fixedly connected to each other, and the relative position of the adapter and the collector is stable, so that the flow distribution ports on the collector are connected to the heat exchange channels through the adapter channels, and the working performance of the heat exchange body is ensured to a certain extent.

[0020] In some embodiments, the adapter is sleeved on one end of the collector facing the adapter. The collector and the adapter are fixedly connected to each other, and the contact area of the collector and the adapter is increased, so that the collector and the adapter are stably connected to each other, and the working performance of the heat exchange body is ensured to a certain extent.

[0021] In some embodiments, the sealing member is arranged in the heat exchange body, and the collector is injection molded. When the sealing member is arranged in the heat exchange body, the collector is injection molded, the molding difficulty of the collector is reduced, and the structural stability of the collector is improved, so that the working performance of the collector is ensured to a certain extent.

[0022] In some embodiments, the collector is a plastic part. The weight of the collector is reduced, the manufacturing cost of the collector is reduced, and the connection difficulty of the collector and the adapter is reduced.

[0023] In some embodiments, the heat exchange body is provided with a plurality of partition ribs for partitioning the plurality of heat exchange channels; the sealing member is provided with at least one insertion slot, and at least one of the partition ribs is inserted into the insertion slot so that the sealing member is positioned in the heat exchange body and blocks the heat exchange channels. While the sealing member is arranged in the heat exchange body to block at least one heat exchange channel, the fitting difficulty of the sealing member and the heat exchange body is reduced, and the fitting quality is improved, so that the sealing member can be stably arranged in the heat exchange channel and the sealing effect of the sealing member is improved.

[0024] In some embodiments, the side wall of the sealing member is provided with a limiting protrusion adapted to contact an end surface of the partition rib and / or the heat exchange body to limit the length of the part of the sealing member located in the heat exchange channel. To a certain extent, the sealing member cannot block the end opening of the heat exchange channel, that is, to a certain extent, the part of the heat exchange medium is filled at the end opening of the heat exchange channel, the sealing effect of the sealing member is improved, and the weight of the heat exchanger is reduced.

[0025] In some embodiments, the adapter channel comprises a plurality of adapter channels corresponding to a plurality of heat exchange channels, and each of the flow distribution ports is connected to the heat exchange channel through the adapter channel. This one-to-one correspondence between the flow distribution ports and the heat exchange channels facilitates the transport of the heat exchange medium flowing through the manifold into the heat exchange channel, reduces the difficulty of transporting the heat exchange medium, and enables the heat exchanger to have a temperature regulation function, thereby ensuring the working performance of the heat exchanger to some extent.

[0026] In some embodiments, the blocking member and the manifold are integrally formed to block part of the flow distribution ports. When the blocking member is arranged on the manifold and integrally formed with the manifold, part of the flow distribution ports can be blocked by the blocking member. Since each flow distribution port is connected to the heat exchange channel through the adapter channel, the blocking member can also block part of the heat exchange channels, thereby reducing the total amount of the heat exchange medium in the heat exchange body, reducing the overall weight of the heat exchanger, and achieving the purpose of reducing the weight of the battery device.

[0027] In some embodiments, the battery device comprises a plurality of battery cell assemblies and a plurality of heat exchangers, and the plurality of battery cell assemblies are arranged in multiple rows, and each row of the battery cell assemblies is arranged between two adjacent heat exchangers. This can achieve simultaneous heat exchange of the battery cell assemblies by the two heat exchangers, thereby ensuring the heat exchange effect of the heat exchanger to some extent, maintaining the temperature of the battery cell assemblies within a suitable temperature range, prolonging the service life of the battery cell assemblies, and improving the use safety of the battery cell assemblies.

[0028] In a second aspect, the application provides a power consuming device comprising the battery device described above, which is used to provide electric energy.

[0029] In the technical solution of the embodiments of the application, the battery device described above can be used to ensure the working performance of the power consuming device to some extent, improve the use safety of the power consuming device, and prolong the service life of the power consuming device.

[0030] Additional aspects and advantages of the application will become apparent from the following description, or will be learned through practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the application, the drawings needed in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some of the embodiments of the application, and therefore should not be considered as limiting the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0032] Figure 1Schematic view of an electrical device according to some embodiments of the present application.

[0033] Figure 2 Exploded view of a battery device according to some embodiments of the present application.

[0034] Figure 3 Schematic view of a heat exchanger according to some embodiments of the present application.

[0035] Figure 4 Schematic view of a heat exchanger according to some embodiments of the present application. Figure 3

[0036] Figure 5 Schematic view of a heat exchanger according to some embodiments of the present application.

[0037] Figure 6 Schematic view of a heat exchanger according to some embodiments of the present application. Figure 5 Cross-sectional view along A-A line.

[0038] Figure 7 Schematic view of a heat exchanger according to some embodiments of the present application. Figure 5

[0039] Figure 8 Schematic view of a heat exchanger according to some embodiments of the present application. Figure 7

[0040] Figure 9 Schematic view of a heat exchanger according to some embodiments of the present application.

[0041] Figure 10 Schematic view of a heat exchanger according to some embodiments of the present application. Figure 9

[0042] Figure 11 Schematic view of a heat exchanger according to some embodiments of the present application. Figure 10

[0043] Schematic view of a heat exchanger according to some embodiments of the present application. Figure 12

[0044] Schematic view of a heat exchanger according to some embodiments of the present application. Figure 13

[0045] Schematic view of a heat exchanger according to some embodiments of the present application.

[0046] 1000, electrical device;

[0047] 100, battery device;

[0048] 110, box; 113, first part; 114, second part;

[0049] 120, battery cell assembly;

[0050] 200, controller;​​​​​

[0051] 300, motor;

[0052] 400, heat exchanger;

[0053] 410, heat exchange body; 411, heat exchange channel; 412, partition rib;

[0054] 420, adapter; 421, adapter channel; 422, outer sleeve ring; 423, adapter plate;

[0055] 430, current collector; 431, current collection port; 432, current distribution port; 433, current collection cavity; 434, through hole;

[0056] 440, blocking piece;

[0057] 441, plug-in slot; 442, limiting protrusion; 443, blocking block; 444, communication channel. DETAILED DESCRIPTION

[0058] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0059] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion. The terms "first", "second" and the like in the specification and claims of the present application and the above description of drawings are used to distinguish different objects, not to describe a particular order or primary and secondary relationship.

[0060] In the present application, the phrase "embodiment" means that the specific features, structures or characteristics described in conjunction with the embodiment can be included in at least one embodiment of the present application. The appearance of this phrase at various places in the specification does not necessarily mean the same embodiment, nor is it an independent or alternative embodiment to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0061] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "attachment" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. 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.

[0062] The term "and / or" in the present application only describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in the present application generally represents that the front and rear associated objects have an "or" relationship.

[0063] In the embodiments of the present application, the same reference signs represent the same parts, and for the sake of brevity, the detailed description of the same parts is omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device, are only exemplary and should not constitute any limitation on the present application.

[0064] "Multiple" appearing in the present application means two or more (including two).

[0065] At present, from the development of market situation, the application of battery device is more and more extensive. The battery device is not only applied to the energy storage power supply system of hydropower, thermal power, wind power and solar power station, but also widely used in electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, as well as military equipment, aerospace and other fields.

[0066] With the continuous expansion of the application field of battery device, the market demand is also increasing.

[0067] When the battery device works, a large amount of heat will be generated due to the discharge of the positive and negative electrodes of the battery monomer and the chemical reaction of the electrolyte inside the battery monomer, resulting in the temperature rise of the battery monomer.

[0068] In the prior art, in order to reduce the temperature of the battery monomer, a heat exchanger is usually arranged in the battery device, and heat exchange between the heat exchanger and the battery monomer is used to maintain the temperature of the battery monomer within a suitable temperature range, to ensure the working performance of the battery monomer to a certain extent, prolong the service life of the battery monomer, and improve the use safety of the battery monomer.

[0069] The heat exchanger generally comprises an inlet liquid header, an outlet liquid header, and a heat exchange body arranged between the inlet liquid header and the outlet liquid header. The heat exchange medium is introduced into the heat exchange body through the inlet liquid header, flows in the heat exchange body, and is discharged from the outlet liquid header. The heat exchange medium is a fluid, which can be a cooling medium or a heating medium. The fluid can circulate in the heat exchange body to achieve heat exchange with the battery monomer, so as to achieve the purpose of adjusting the temperature of the battery device.

[0070] However, the applicant finds that the heat exchanger itself and the heat exchange medium introduced into the heat exchanger can greatly increase the weight of the battery device, which is not conducive to the lightweight setting of the battery device. When the heavy battery device is applied to a vehicle, the mass of the vehicle is increased, the cruising range of the vehicle is shortened, and the heavy battery device means that more energy is needed to overcome inertia during acceleration and braking of the vehicle, thereby affecting the acceleration and braking performance of the vehicle and posing a potential threat to driving safety.

[0071] In order to solve the above problems, combined with Figures 1-13 The battery device 100 provided by the embodiments of the present application can reduce the weight of the heat exchanger 400 without changing the contact area of the heat exchanger 400 and the battery monomer assembly 120. The specific scheme is to arrange the heat exchanger 400 in the battery device 100 to include a heat exchange body 410, an adapter 420, a header 430, and a blocking piece 440. The heat exchange body 410 includes a plurality of heat exchange channels 411. The adapter 420 is arranged to have an adapter channel 421. The shunt port 432 of the header 430 is arranged to communicate with the heat exchange channel 411 through the adapter channel 421. In this way, whether the blocking piece 440 is arranged in the heat exchange body 410 to block at least one heat exchange channel 411 or the blocking piece 440 is arranged in the header 430 to block at least one shunt port 432, the blocking piece 440 can be used to block part of the heat exchange channel 411 to reduce the difficulty of blocking the heat exchange channel 411, thereby facilitating the prevention of the heat exchange medium from entering part of the heat exchange channel 411, thereby reducing the weight of the heat exchange body 410 and improving the weight capacity density of the battery device 100.

[0072] It should be noted that, in the technical solutions of the present application, the at least one heat exchange passage 411 is blocked by the blocking member 440, and / or the at least one flow distribution port 432 is blocked by the blocking member 440, so as to block the at least one heat exchange passage 411 by the blocking member 440. In this way, the heat exchange medium flowing through the current collector 430 can flow into the heat exchange passage 411 which is not blocked by the blocking member 440, so as to realize heat exchange between the heat exchange medium and the battery cell assembly 120, achieve the purpose of dissipating heat of the battery cell assembly 120 by the heat exchange body 410, and maintain the temperature of the battery device 100 within a suitable temperature range. At the same time, the heat exchange passage 411 blocked by the blocking member 440 does not flow into the heat exchange medium, which can effectively reduce the total content of the heat exchange medium in the heat exchange body 410, thereby reducing the weight of the heat exchange medium, and on the other hand, the heat exchange passage 411 in the heat exchange body 410 which is not connected to the heat exchange medium is a hollow structure, which can effectively reduce the weight of the heat exchange body 410 itself, thereby realizing the purpose of reducing the overall weight of the heat exchanger 400, achieving the purpose of reducing the weight of the battery device 100, and achieving the purpose of weight reduction, which is beneficial to improve the weight capacity density of the battery device 100, and solves the technical problem that the weight of the heat exchanger 400 in the prior art is relatively heavy, which increases the weight of the battery device 100.

[0073] At the same time, whether the blocking member 440 is arranged in the heat exchange body 410 to block the at least one heat exchange passage 411, or the blocking member 440 is arranged in the current collector 430 to block the at least one flow distribution port 432, the blocking member 440 can block part of the heat exchange passages 411, and the blocking difficulty of the heat exchange passages 411 is reduced.

[0074] That is to say, the battery device 100 of the present application can reduce its own weight without changing the contact area between the heat exchanger 400 and the battery cell assembly 120.

[0075] In addition, the heat exchanger 400 disclosed in the embodiments of the present application can be used for cooling or heating the battery cell assembly 120, that is, the heat exchanger 400 can cool the battery cell assembly 120, and can also heat and warm up the battery cell assembly 120 working in a low temperature environment, so that the temperature of the battery cell assembly 120 reaches the working temperature interval to normally supply power.

[0076] The embodiments of the present application also provide a power utilization equipment 1000 using the battery device 100 of the present application as a power supply. The power utilization equipment 1000 can be, but is not limited to, a mobile phone, a tablet computer, a notebook computer, an electric toy, an electric tool, an electric vehicle, an electric car, a ship, a spacecraft, etc.

[0077] The electric toy can include a fixed or mobile electric toy, such as a game machine, an electric car toy, an electric ship toy, an electric plane toy, and the like; the spacecraft can include an airplane, a rocket, a space shuttle, a spacecraft, and the like; the electric tool includes a metal cutting electric tool, a grinding electric tool, an assembling electric tool, and a railway electric tool, such as an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact electric drill, a concrete vibrator, and an electric planer, and the like.

[0078] The following embodiments are described in detail for the convenience of illustration, taking the electric device 1000 as a vehicle as an example, and the structure of the electric device 1000 and the battery device 100 of the present application is introduced in detail.

[0079] Please refer to Figure 1 The electric device 1000 is a vehicle, which can be a fuel car, a gas car, or a new energy car, and the new energy car can be a pure electric car, a hybrid car, or an extended range car. The vehicle is provided with a battery device 100, which can be arranged at the bottom, head or tail of the vehicle. The battery device 100 can be used for power supply of the vehicle, for example, the battery device 100 can be used as the operating power supply of the vehicle.

[0080] As shown in Figure 1 , the vehicle can also include a controller 200 and a motor 300, the controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, for the working power demand of the vehicle during starting, navigation and driving.

[0081] In some embodiments of the present application, the battery device 100 can not only be used as the operating power supply of the vehicle, but also be used as the driving power supply of the vehicle, instead of or partially instead of fuel or natural gas to provide driving power for the vehicle.

[0082] The battery device 100 according to the embodiments of the present application is described below with reference to the accompanying drawings of the specification.

[0083] In combination with Figure 2 and Figure 3 , the battery device 100 includes a box body 110, a battery monomer assembly 120 and a heat exchanger 400.

[0084] As shown in Figure 2 , the battery monomer assembly 120 is arranged in the box body 110. To achieve the use of the box body 110 to support and protect the battery monomer assembly 120, to improve the structural stability of the battery monomer assembly 120, to prolong the service life of the battery monomer assembly 120, and to improve the use safety of the battery monomer assembly 120.

[0085] In some embodiments, as shown in Figure 2As shown, the box 110 can include a first part 113 and a second part 114, the first part 113 and the second part 114 are mutually coverable, and the first part 113 and the second part 114 jointly define a containing cavity for containing the battery monomer assembly 120, so as to reduce the difficulty of forming the box 110.

[0086] In the first part 113 can be a hollow structure with one end open, and the second part 114 can be a plate structure, the second part 114 is coverable on the open side of the first part 113 (not shown in the example), so that the first part 113 and the second part 114 jointly define the containing cavity; or the second part 114 can be a hollow structure with one end open, and the first part 113 can be a plate structure (not shown in the example), and the first part 113 is coverable on the open side of the second part 114, so that the first part 113 and the second part 114 cooperate to jointly define the containing cavity; or, as shown in the example, Figure 2 As shown, the first part 113 and the second part 114 are both hollow structures with one side open, the open side of the first part 113 is coverable on the open side of the second part 114 to define the containing cavity, and the box 110 formed by the first part 113 and the second part 114 can be in various shapes, such as a cylinder, a cube or a cuboid, etc.

[0087] Of course, in some other embodiments of the present application, the battery device 100 can also not include the box 110, but only include the battery monomer assembly 120 and the heat exchange body 410, which will not be described here.

[0088] The battery device 100 mentioned in the embodiments of the present application refers to a single physical module including a plurality of battery monomers to provide higher voltage and capacity. For example, the battery device 100 mentioned in the present application can be a battery monomer assembly 120 or a plurality of battery monomers, etc. The battery monomer assembly 120 generally includes a plurality of battery monomers. The battery device 100 generally includes a box 110 for packaging a plurality of battery monomer assemblies 120 or a plurality of battery monomers, and the box 110 can to some extent avoid the influence of liquid or other foreign matters on the charging or discharging of the battery monomers.

[0089] It should also be noted that in the battery device 100, the plurality of battery monomers can be connected in series, in parallel or in a mixed manner, the mixed manner means that the plurality of battery monomers are connected in series and in parallel, and the plurality of battery monomers can be directly connected in series, in parallel or in a mixed manner, and then the battery monomer assembly 120 composed of the plurality of battery monomers is contained in the box 110.

[0090] In some embodiments, as shown in the example, Figure 2As shown, the battery device 100 includes a plurality of battery cell assemblies 120. In the process of assembling the battery device 100, the battery device 100 can also be formed by a plurality of battery cells being connected in series, in parallel, or in a mixed manner to form the battery cell assemblies 120, and then the plurality of battery cell assemblies 120 are connected in series, in parallel, or in a mixed manner to form an integral whole and are accommodated in the box body 110.

[0091] In some embodiments, the battery device 100 can further include other structures. For example, the battery device 100 can further include an electrical connector for realizing electrical connection between the plurality of battery cells.

[0092] Here, the electrical connector can be understood as a busbar.

[0093] In addition, Figure 2 As shown in FIG. 1, the battery cell is formed in a cuboid shape. In other embodiments of the present application, the battery cell can also be in a cylindrical shape, a polygonal prism shape, a flat shape, or other shapes.

[0094] In the present application, the battery cell can include a lithium ion secondary battery, a lithium ion primary battery, a lithium-sulfur battery, a sodium lithium ion battery, a sodium ion battery, or a magnesium ion battery, and the like, and the embodiments of the present application are not limited thereto. The battery cell can be in a cylindrical shape, a flat shape, a cuboid shape, or other shapes, and the embodiments of the present application are not limited thereto. The battery cell is generally classified into three types according to the packaging method: cylindrical battery cells, square battery cells, and soft-pack battery cells, and the embodiments of the present application are not limited thereto.

[0095] For example, the battery cell generally includes a shell, an electrode assembly, and an electrolyte. The shell is used to accommodate the electrode assembly and the electrolyte, and the shell is provided with at least one positive pole and at least one negative pole. The electrode assembly includes one or more electrode assemblies, and the electrode assembly is formed by stacking or winding a positive electrode sheet, a negative electrode sheet, and a separator film.

[0096] The positive electrode sheet generally includes a positive current collector and a positive active material layer, and the positive active material layer is directly or indirectly coated on the positive current collector. A plurality of positive electrode tabs are stacked together and are electrically connected to the positive pole. For example, the plurality of positive electrode tabs stacked together can be directly welded to the positive pole to form an electrical connection. Alternatively, the electrode assembly can further include a positive adapter plate, the plurality of positive electrode tabs stacked together are welded to one end of the positive adapter plate, and the other end of the positive adapter plate is welded to the positive pole, so that the positive electrode tabs are electrically connected to the positive pole.

[0097] The negative electrode tab generally can include a negative electrode current collector and a negative electrode active material layer, the negative electrode active material layer is coated on the negative electrode current collector directly or indirectly, and a plurality of negative electrode tabs are laminated together and in electrical connection with the negative electrode post. Exemplarily, the plurality of negative electrode tabs laminated together can be directly welded to the negative electrode post to form the electrical connection; or the battery cell assembly can further include a negative electrode adapter sheet, the plurality of negative electrode tabs laminated together are welded to one end of the negative electrode adapter sheet, and the other end of the negative electrode adapter sheet is welded to the negative electrode post, so that the negative electrode tabs are in electrical connection with the negative electrode post. The material of the separator is not limited, for example, it can be polypropylene or polyethylene, etc.

[0098] The heat exchanger 400 is arranged in the box body 110, and is configured to exchange heat with the battery cell assembly 120 to adjust the temperature of the battery cell assembly 120 by using the heat exchange body 410, so that the temperature of the battery cell assembly 120 can be maintained within a suitable temperature range, thereby prolonging the service life of the battery cell assembly 120 and improving the use safety of the battery cell assembly 120.

[0099] It should be noted that the heat exchanger 400 disclosed in the embodiments of the present application exchanges heat with the battery cell assembly 120, which can be used for cooling or heating the battery cell assembly 120, that is, the heat exchanger 400 can cool the battery cell assembly 120, or heat and warm up the battery cell assembly 120 working in a low-temperature environment, so that the temperature of the battery cell assembly 120 reaches the working interval temperature to normally supply power.

[0100] In the embodiments of the present application, the heat exchanger 400 is arranged in the box body 110, and is configured to exchange heat with the battery cell assembly 120 to adjust the temperature of the battery cell assembly 120 by using the heat exchange body 410, so that the temperature of the battery cell assembly 120 can be maintained within a suitable temperature range, thereby prolonging the service life of the battery cell assembly 120 and improving the use safety of the battery cell assembly 120. Figures 3-13 As shown in

[0101] As shown in Figures 3-8 The heat exchange body 410 includes a plurality of heat exchange channels 411. The heat exchange channels 411 are mainly used to fill the heat exchange medium, so as to realize the heat exchange between the heat exchange body 410 and the battery cell assembly 120, thereby achieving the purpose of adjusting the temperature of the battery cell assembly 120 by using the heat exchanger 400, and to a certain extent, guaranteeing the working performance of the battery cell assembly 120.

[0102] As shown in Figure 2 , Figure 3 and Figure 9 The adapter part 420 is arranged at the end of the heat exchange body 410, and the adapter part 420 is provided with an adapter channel 421, and the adapter channel 421 is in communication with the heat exchange channel 411. In this way, the heat exchange medium flowing through the adapter channel 421 can flow to the heat exchange channel 411, so as to transport the heat exchange medium to the heat exchange channel 411, and to a certain extent, guarantee the working performance of the heat exchanger 400.

[0103] Combination Figure 2 , Figure 3 and Figure 9 As shown, the collector 430 is fixed to the transfer part 420. The collector 430 has a collection cavity 433 inside. The collector 430 has a collection port 431 communicating with the collection cavity 433 and multiple branch ports 432. The branch ports 432 are adapted to communicate with the heat exchange channel 411 through the transfer channel 421. In this way, the heat exchange medium flowing through the collector 430 can enter the heat exchange channel 411 in sequence through the branch ports 432 and the transfer channel 421, so that the heat exchanger 400 has the function of temperature regulation.

[0104] In some embodiments, when the heat exchanger 400 is applied to the battery device 100, the surface of the heat exchange body 410 perpendicular to its thickness direction can be used to contact the battery cell assembly 120 in order to achieve heat exchange between the heat exchanger 400 and the battery cell assembly 120.

[0105] Meanwhile, the heat exchanger body 410 can also provide stable support, constraint and anti-deformation effect for the battery cell assembly 120.

[0106] In some embodiments, a plurality of heat exchange channels 411 extend from one end to the other end of the heat exchange body 410 along its length, and a collector 430 is disposed at both ends of the heat exchange body 410 along its length. The fluid can circulate unidirectionally within the heat exchange body 410, that is, the fluid can enter from the collector 430 at one end of the heat exchange body 410 and then be discharged directly from the collector 430 at the other end of the heat exchange body 410.

[0107] Of course, in some other embodiments, the fluid may also circulate repeatedly within the heat exchanger body 410 before being discharged through the collector 430.

[0108] Combination Figure 5 , Figure 6 and Figure 9As shown, the blocking member 440 is arranged in the heat exchange body 410 to block the at least one heat exchange passage 411 and / or the blocking member 440 is arranged in the current collector 430 to block the at least one distribution port 432. Here, it is referred to that the blocking member 440 is arranged in the heat exchange body 410 to block the at least one heat exchange passage 411; or, the blocking member 440 is arranged in the current collector 430 to block the at least one distribution port 432; or, the blocking member 440 is arranged in the heat exchange body 410 to block the at least one heat exchange passage 411 and the blocking member 440 is arranged in the current collector 430 to block the at least one distribution port 432, because the adapter passage 421 of the adapter 420 is in communication with the heat exchange passage 411 and the distribution port 432 is adapted to be in communication with the heat exchange passage 411 through the adapter passage 421, so that the application can achieve the purpose of blocking the heat exchange passage 411 by the blocking member 440 whether the heat exchange passage 411 is blocked by the blocking member 440 or the distribution port 432 is blocked by the blocking member 440, so as to reduce the difficulty of blocking the heat exchange passage 411.

[0109] In a specific example, when the blocking member 440 is arranged in the current collector 430 to block the at least one distribution port 432, the distribution port 432 is not in communication with the current collecting cavity 433, so as to avoid the heat exchange medium in the current collecting cavity 433 from entering the heat exchange passage 411 through the distribution port 432 to a certain extent.

[0110] It should be noted that because the heat exchange body 410 includes a plurality of heat exchange passages 411, when the plurality of heat exchange passages 411 are filled with heat exchange medium, the weight of the heat exchange body 410 is excessively increased, and then the weight of the battery device 100 is increased, which affects the use performance of the battery device 100.

[0111] Therefore, the application arranges the blocking member 440 to block the at least one heat exchange passage 411, so that the heat exchange medium flowing through the current collector 430 is prevented from entering the part of the heat exchange passages 411, the total content of the heat exchange medium in the heat exchange body 410 is effectively reduced, the weight of the heat exchange medium in the heat exchange body 410 is reduced, the heat exchange passages 411 which are not filled with the heat exchange medium in the heat exchange body 410 are hollow structures, the weight of the heat exchange body 410 itself is effectively reduced, the overall weight of the heat exchanger 400 is reduced, the weight of the battery device 100 is reduced, and the weight capacity density of the battery device 100 is improved.

[0112] It should be further noted that when the blocking member 440 is arranged in the heat exchange body 410 to block at least one heat exchange channel 411, both ends of the heat exchange channel 411 are blocked by the blocking member 440; when the blocking member 440 is arranged in the collector 430 to block at least one branch port 432, the collector 430 located at both ends of the heat exchange body 410 is provided with the blocking member 440, so that the heat exchange channel 411 can be effectively blocked by the blocking member 440, avoiding the heat exchange medium from entering the blocked heat exchange channel 411, and effectively reducing the weight of the heat exchanger 400.

[0113] As can be seen from the above structure, the battery device 100 of the embodiment of the application, by arranging the heat exchanger 400, arranging the adapter part 420 of the heat exchanger 400 to include the adapter channel 421, and arranging the adapter channel 421 to communicate with the heat exchange channel 411, and arranging the branch port 432 of the collector 430 to communicate with the heat exchange channel 411 through the adapter channel 421, when the blocking member 440 is arranged in the heat exchange body 410 to block at least one heat exchange channel 411 and / or the blocking member 440 is arranged in the collector 430 to block at least one branch port 432, the purpose of blocking the heat exchange channel 411 by the blocking member 440 can be achieved, thereby facilitating the prevention of the heat exchange medium from entering at least part of the heat exchange channel 411, realizing the reduction of the total content of the heat exchange medium in the heat exchange body 410, and the heat exchange channel 411 in the heat exchange body 410 not being communicated with the heat exchange medium is a hollow structure, thereby reducing the weight of the heat exchange body 410, and being beneficial to improving the weight capability density of the battery device 100.

[0114] At the same time, arranging the blocking member 440 in the heat exchange body 410 to block at least one heat exchange channel 411 and / or arranging the blocking member 440 in the collector 430 to block at least one branch port 432 can also reduce the difficulty of blocking the heat exchange channel 411.

[0115] That is to say, the heat exchanger 400 of the application can reduce the fluid capacity in the heat exchanger 400 while not changing the contact area with the battery monomer assembly 120, so as to improve the weight capability density of the battery device 100.

[0116] It can be understood that, compared with the prior art, by arranging the adapter part 420 to be the adapter channel 421, and arranging the adapter channel 421 to communicate with the heat exchange channel 411, whether the heat exchange channel 411 is blocked by the blocking member 440 or the branch port 432 is blocked by the blocking member 440, the purpose of blocking the heat exchange channel 411 by the blocking member 440 can be achieved, thereby reducing the difficulty of blocking the heat exchange channel 411, facilitating the prevention of the heat exchange medium flowing through the collector 430 from entering part of the heat exchange channel 411, effectively reducing the overall weight of the heat exchanger 400, achieving the purpose of reducing the weight of the battery device 100, and being beneficial to improving the weight capability density of the battery device 100.

[0117] It should be noted that the heat exchanger 400 of the present application is used to accommodate a fluid (heat exchange medium) to regulate the temperature of the battery cell assembly 120, and in the case of cooling the battery cell assembly 120, the heat exchanger 400 can accommodate a cooling medium to regulate the temperature of the battery cell assembly 120, at this time, the heat exchanger 400 can also be referred to as a cooling member, a cooling system, a cooling plate, a liquid cooling plate, etc. In addition, the heat exchanger 400 can also be used to heat the battery cell assembly 120, and the present application is not limited thereto.

[0118] Among them, the heat exchange medium of the present application can be water, refrigerant, etc.

[0119] In some embodiments, as shown in Figure 3 and Figure 9 The heat exchange body 410 can be a flat tube, and the cross section of the heat exchange channel 411 can be a regular shape such as a circle, a rectangle, an ellipse, etc. or other special-shaped.

[0120] In some embodiments, the adapter 420 connects the sealing member 440 and the heat exchange body 410. That is, when the adapter 420 is arranged at one end of the heat exchange body 410, the adapter 420 connects the sealing member 440 and the heat exchange body 410 at the same time, so as to realize the cooperation of the sealing member 440 and the heat exchange body 410 to support the adapter 420 at the same time, improve the position stability of the adapter 420, and to a certain extent, ensure the working performance of the adapter 420.

[0121] At the same time, connecting the adapter 420 to the sealing member 440 can also support the sealing member 440 with the adapter 420, so as to improve the position stability of the sealing member 440 and improve the sealing effect of the sealing member 440.

[0122] In a specific example, when the blocking piece 440 is arranged in the heat exchange body 410 to block the at least one heat exchange channel 411, in the process of assembling the heat exchange body 410, the blocking piece 440 can be first arranged in the heat exchange channel 411 (for example, by pushing the blocking piece 440 into the heat exchange channel 411 by means of an external driving piece), so as to realize the matching connection between the blocking piece 440 and the heat exchange channel 411. After the blocking piece 440 and the heat exchange channel 411 are assembled, the adapter 420 is connected to the blocking piece 440 and the heat exchange body 410 respectively, so as to realize the fixed connection between the adapter 420 and the blocking piece 440 and the heat exchange body 410. When the blocking piece 440 is arranged in the collector 430 to block the at least one branch port 432, in the process of assembling the heat exchange body 410, the blocking piece 440 can be first arranged on the collector 430, and the blocking piece 440 and the collector 430 can be welded, bonded or integrally formed. After the blocking piece 440 and the collector 430 are assembled, the adapter 420 is connected to the blocking piece 440 and the heat exchange body 410 respectively, so as to realize the fixed connection between the adapter 420 and the blocking piece 440 and the heat exchange body 410.

[0123] In some embodiments, the adapter 420 is overmolded on the blocking piece 440 and the heat exchange body 410, so that the adapter 420, the blocking piece 440 and the heat exchange body 410 form an integral piece. It can be understood here that, in the process of assembling the heat exchange body 410, the blocking piece 440 and the heat exchange body 410 can be first processed and connected in place, and then the adapter 420 is integrally injection molded with the heat exchange body 410 and the blocking piece 440, so as to realize the secondary injection molding and overmolding of the adapter 420 on the blocking piece 440 and the heat exchange body 410. In this way, the connection between the adapter 420 and the heat exchange body 410 and the blocking piece 440 is realized, which can not only reduce the connection difficulty of the adapter 420 and the heat exchange body 410 and the blocking piece 440, but also ensure the connection strength of the adapter 420 and the heat exchange body 410 and the blocking piece 440 to some extent, so that the adapter 420 can be stably arranged at the end of the heat exchange body 410, thereby facilitating the matching communication between the adapter channel 421 and the heat exchange channel 411, and facilitating the matching connection between the heat exchange body 410 and the collector 430 by means of the adapter 420, and reducing the matching connection difficulty of the heat exchange body 410 and the collector 430, and ensuring the working performance of the heat exchanger 400 to some extent.

[0124] It should be noted that, by overmolding the adapter 420 on the blocking piece 440 and the heat exchange body 410 to realize the matching connection between the adapter 420 and the heat exchange body 410 and the blocking piece 440, the sealing property and the pressure resistance of the connection between the adapter 420 and the heat exchange body 410 can be increased compared with welding, bonding or clamping, thereby realizing the communication between the adapter channel 421 and the heat exchange channel 411.

[0125] In some embodiments, the adapter 420 is a plastic part. That is, the adapter 420 is made of plastic material, which on the one hand enables the adapter 420 to be overmolded on the heat exchange body 410 and formed as an integral part with the heat exchange body 410, reducing the difficulty of connecting the adapter 420 with the heat exchanger 400; on the other hand, it can also reduce the weight of the adapter 420 and reduce the manufacturing cost of the adapter 420.

[0126] In some embodiments, in combination with Figure 3 and Figure 4 As shown in Figs. 4 and 5, the adapter 420 includes a sleeve ring 422 and an adapter plate 423, the sleeve ring 422 is sleeved on one end of the heat exchange body 410, the adapter plate 423 is arranged in the sleeve ring 422, the adapter channel 421 penetrates through the adapter plate 423, the sleeve ring 422 is overmolded on the heat exchange body 410, and the adapter plate 423 is overmolded on the plugging piece 440. Thus, the adapter 420 is overmolded with the heat exchange body 410 and the plugging piece 440, reducing the difficulty of connecting the adapter 420 with the heat exchange body 410 and the plugging piece 440, and increasing the sealing performance and pressure resistance of the connection between the adapter 420 and the heat exchange body 410 and the plugging piece 440.

[0127] In a specific example, in combination with Figure 3 and Figure 4 As shown in Figs. 4 and 5, the adapter 420 has a thin wall to form the sleeve ring 422, the sleeve ring 422 is connected with one end of the heat exchange body 410, the area where the cooling medium needs to flow through is set as a through hole to form the adapter channel 421, and the other areas are all solid to form the adapter plate 423.

[0128] In some embodiments, the outer surface of the heat exchange body 410 is provided with a first area, the roughness of the first area is greater than that of the remaining areas, and the first area is in contact with the sleeve ring 422. Thus, the heat exchange body 410 is in contact with the adapter 420, which is conducive to overmolding the adapter 420 on the heat exchange body 410.

[0129] In some embodiments, the outer surface of the heat exchange body 410 is provided with a first area, the roughness of the first area is greater than that of the remaining areas, and the first area is in contact with the sleeve ring 422. Thus, the heat exchange body 410 is in contact with the adapter 420, which is conducive to overmolding the adapter 420 on the heat exchange body 410.

[0130] It should be noted that the first area herein can be understood as the area close to the end of the heat exchange body 410. Between the two end areas, the heat exchange body 410 further has a second area, which can be understood as the remaining area of the heat exchange body 410. By setting the roughness of the first area to be greater than the roughness of the remaining area, the bonding force between the heat exchange body 410 and the adapter 420 can be increased when the first area is in contact with the sleeve ring 422 and / or the adapter plate 423, so as to increase the connection strength of the heat exchange body 410 and the adapter 420.

[0131] In some embodiments, the heat exchange body 410 is made of a metal material. The first area of the heat exchange body 410 is roughened to increase the roughness of the first area, so as to set the roughness of the first area to be greater than the roughness of the remaining area.

[0132] Here, the roughness value of the first area is not specifically limited, and the greater the roughness value, the better.

[0133] Of course, in other embodiments, a plurality of protrusions and / or a plurality of grooves can also be arranged in the first area. The cooperation of the plurality of protrusions and / or the plurality of grooves can also increase the roughness of the first area, so as to set the roughness of the first area to be greater than the roughness of the remaining area, and increase the bonding force between the heat exchange body 410 and the adapter 420.

[0134] In addition, by making the heat exchange body 410 of a metal material, the heat exchange body 410 can be conveniently roughened, the structural strength of the heat exchange body 410 can be improved, the service life of the heat exchange body 410 can be prolonged, and the heat exchange performance of the heat exchange body 410 can also be ensured to a certain extent.

[0135] In other embodiments, the heat exchange body 410 can also be made of plastic.

[0136] In a specific example, the sleeve ring 422 is sleeved on the first area to realize the contact cooperation between the first area and the sleeve ring 422. In this way, while the adapter 420 is arranged at one end of the heat exchange body 410, the connection difficulty of the adapter 420 and the heat exchange body 410 can be reduced, and the connection strength of the adapter 420 and the heat exchange body 410 can be improved.

[0137] In other embodiments, the side wall of the heat exchange channel 411 in the heat exchange body 410 which does not need to be filled with a cooling medium can also be roughened. When the adapter 420 is injection molded, the adapter 420 is in contact with the side wall of the heat exchange channel 411 in the heat exchange body 410 which does not need to be filled with a cooling medium. In this way, the injection molding cooperation between the adapter 420 and the heat exchange body 410 can also be realized, and the cooperation strength can be improved. That is, the sleeve ring 422 is not limited to being sleeved on the heat exchange body 410.

[0138] In some embodiments, the adapter plate 423 is in contact with the end face of the blocking member 440 and the heat exchange body 410 respectively. In this way, the adapter plate 420, the blocking member 440 and the heat exchange body 410 can support each other to improve the structural stability of the heat exchanger 400 as a whole and to ensure the working performance of the heat exchanger 400 to a certain extent.

[0139] In some embodiments, the adapter plate 423 is in contact with the end face of the blocking member 440 and the heat exchange body 410 respectively. In this way, the adapter plate 420, the blocking member 440 and the heat exchange body 410 can support each other to improve the structural stability of the heat exchanger 400 as a whole and to ensure the working performance of the heat exchanger 400 to a certain extent. Figures 3-8 As shown, the blocking member 440 is used to block the heat exchange channel 411, and a part of the blocking member 440 protrudes out of the heat exchange channel 411, so that at least part of the blocking member 440 protrudes out of the heat exchange channel 411. Here, when the blocking member 440 is arranged in the heat exchange body 410 to block the heat exchange channel 411, a part of the blocking member 440 protrudes out of the heat exchange channel 411, which is beneficial to the assembly and disassembly of the blocking member 440, and is also beneficial to the fixation of the blocking member 440 by the adapter plate 420 and / or the current collector 430, further improving the positional stability of the blocking member 440 and ensuring the working performance of the blocking member 440 to a certain extent.

[0140] That is, in some embodiments of the present application, a separate blocking member 440 can be provided, and the blocking member 440 is used to directly block the heat exchange channel 411.

[0141] It should be noted that when the blocking member 440 is used to directly block the heat exchange channel 411, the blocking member 440 can be arranged in the heat exchange body 410 first (such as by an external driving member to push the blocking member 440 and push the blocking member 440 into the heat exchange channel 411), and then the blocking member 440 and the heat exchange body 410 are embedded as inserts and integrally injection molded with the adapter plate 420, so as to facilitate the secondary injection molding of the adapter plate 420 to cover the blocking member 440 and the heat exchange body 410, realize the cooperative connection of the adapter plate 420 with the blocking member 440 and the heat exchange body 410, and thus realize the blocking of part of the heat exchange channel 411 of the heat exchange body 410 by the blocking member 440.

[0142] In some embodiments, the adapter plate 423 is in contact with the end face of the blocking member 440 and the heat exchange body 410 respectively. In this way, the adapter plate 420, the blocking member 440 and the heat exchange body 410 can support each other to improve the structural stability of the heat exchanger 400 as a whole and to ensure the working performance of the heat exchanger 400 to a certain extent.

[0143] In summary, the adapter 420 is designed to accommodate the accommodation groove to avoid the plugging member 440, so that when the adapter 420 is overmolded on the heat exchange body 410, the adapter 420 can be connected with the heat exchange body 410 and the plugging member 440 at the same time, improving the position stability of the plugging member 440, thereby realizing the local plugging of the heat exchange body 410.

[0144] In a specific example, the plugging member 440 is first embedded in the heat exchange channel 411, and then the adapter 420 is overmolded with one end of the heat exchange body 410, thereby realizing the plugging of the heat exchange channel 411.

[0145] In some embodiments, in combination with Figure 3 , Figure 4 , Figure 7 and Figure 8 , the plugging member 440 is formed as a plug block, the plug block is shaped according to the heat exchange channel 411 to be plugged, and the plug block is embedded in the end of the heat exchange channel 411 to realize the arrangement of the plugging member 440 in the heat exchange body 410 to plug at least one heat exchange channel 411 and reduce the assembly difficulty of the plugging member 440.

[0146] Wherein, the plug block and the heat exchange channel 411 can adopt an interference fit to increase the connection strength of the plug block and the heat exchange channel 411, so that the plug block can be stably arranged in the heat exchange channel 411, thereby improving the plugging effect of the plugging member 440.

[0147] It should be noted that the plug block mentioned here can be a metal plug block or a plastic plug block.

[0148] In some embodiments, in the length direction of the heat exchange channel 411, the contact length of the plug block with the heat exchange channel 411 is greater than 10mm, to further increase the connection strength of the plug block and the heat exchange channel 411, so that the plug block can be stably arranged in the heat exchange channel 411, thereby improving the plugging effect of the plugging member 440.

[0149] It should be noted that when multiple heat exchange channels 411 need to be plugged, multiple adjacent heat exchange channels 411 can be plugged, so that one plugging member 440 can be used to plug multiple heat exchange channels 411, thereby reducing the plugging difficulty of multiple heat exchange channels 411.

[0150] Of course, multiple plugging members 440 can also be provided, and the multiple plugging members 440 correspond one-to-one to multiple heat exchange channels 411 to be plugged, so that the plugging member 440 can also be used to plug the heat exchange channel 411; at the same time, one plugging member 440 can also be used to plug part of the heat exchange channels 411.

[0151] In addition, when multiple plugging members 440 are provided, adjacent plugging members 440 can be independent of each other or can be connected in cooperation.

[0152] In other embodiments, as shown in Figure 4 , Figure 12 and Figure 13 , the blocking member 440 extends along the arrangement direction of the plurality of heat exchange channels 411, the blocking member 440 covers the end of the heat exchange body 410, the blocking member 440 is provided with a blocking block 443 towards one side of the heat exchange body 410, and the blocking member 440 is further provided with a communication channel 444, the blocking member 440 is connected to the end of the heat exchange body 410, the blocking block 443 is used to fit in the heat exchange channel 411, and the communication channel 444 communicates with the corresponding heat exchange channel 411, so that the blocking of at least one heat exchange channel 411 by the blocking member 440 can also be achieved.

[0153] In some embodiments, the current collector 430 is welded and fixed with the adapter 420. While achieving the fixed cooperation of the current collector 430 and the adapter 420, the fixed connection strength of the current collector 430 and the adapter 420 can also be improved, so that the relative position of the current collector 430 and the adapter 420 is stable, thereby enabling the shunt port 432 on the current collector 430 to communicate with the heat exchange channel 411 through the adapter channel 421, ensuring the working performance of the current collector 430 to a certain extent, and also reducing the fixed connection difficulty of the current collector 430 and the adapter 420.

[0154] In summary, in the heat exchanger 400 of the present application, the adapter 420 on the one hand secondarily injection-molds and covers the blocking member 440 and the heat exchange body 410, so that the adapter 420, the blocking member 440 and the heat exchange body 410 form an integral piece, and on the other hand the adapter 420 is welded and fixed with the current collector 430, thereby realizing the cooperative connection of the current collector 430, the blocking member 440 and the heat exchange body 410, solving the technical problem that the metal heat exchange body 410 and the injection-molded current collector 430 and the metal blocking member 440 cannot be integrally welded with multiple different materials in the prior art, and also solving the technical problem that the metal heat exchange body 410 and the metal blocking member 440 are welded and then connected with the injection-molded current collector 430, which has a high cost, and the technical problem that the blocking member 440 cannot be directly welded with the heat exchange body 410.

[0155] In some embodiments, as shown in Figure 3 , Figure 5 and Figure 6 , the adapter 420 is sleeved on the end of the current collector 430 towards the adapter 420. Here, it can be understood that, in the process of cooperative connection of the adapter 420 and the current collector 430, the current collector 430 has an end towards the adapter 420 and an end away from the adapter 420, and the adapter 420 is sleeved on the end of the current collector 430 towards the adapter 420, which can reduce the connection difficulty of the adapter 420 and the current collector 430, thereby facilitating the fixed connection of the adapter 420 and the current collector 430.

[0156] Meanwhile, by sleeving the adapter 420 on the end of the current collector 430 facing the adapter 420, compared with directly connecting the adapter 420 on the end of the current collector 430, the sleeve is arranged to reduce the difficulty of fixing the current collector 430 and the adapter 420, and also can increase the contact area of the current collector 430 and the adapter 420, thereby ensuring the connection quality of the current collector 430 and the adapter 420 to a certain extent, so that the current collector 430 and the adapter 420 can form a stable fixed connection, so that the shunt port 432 on the current collector 430 can be connected to the heat exchange channel 411 through the adapter channel 421, so as to utilize the current collector 430 to transport the heat exchange medium to the heat exchange channel 411, and to a certain extent, ensure the working performance of the heat exchange body 410.

[0157] It should be noted that when the adapter 420 includes the sleeve ring 422, the sleeve ring 422 can be sleeved on the end of the current collector 430 facing the adapter 420 to sleeve the adapter 420 on the current collector 430, thereby reducing the difficulty of matching the adapter 420 and the current collector 430.

[0158] In some embodiments, the adapter 420 is sleeved on the end of the current collector 430 facing the adapter 420 and is welded, bonded or integrally injection molded with the current collector 430 to realize the fixed connection of the adapter 420 and the current collector 430.

[0159] Of course, in other embodiments, the end of the adapter 420 facing the current collector 430 can be abutted with the end of the current collector 430 facing the adapter 420, and then connected by welding or bonding, so that the fixed connection of the adapter 420 and the current collector 430 can also be realized.

[0160] It should be noted that the adapter 420 and the current collector 430 are fixedly connected by welding, bonding or integrally injection molding, which can improve the sealing performance of the connection between the adapter 420 and the current collector 430, thereby avoiding the arrangement of a sealing member between the adapter 420 and the current collector 430 to a certain extent, reducing the cost of the heat exchanger 400, and reducing the size of the heat exchanger 400, so that the thickness of the current collector 430 in the thickness direction is thinner, and is suitable for thinner battery monomer assemblies 120.

[0161] In a specific example, one end of the adapter 420 is sleeved on the end of the heat exchange body 410 facing the adapter 420, and the other end of the adapter 420 is sleeved on the end of the current collector 430 facing the adapter 420, to realize the fixed connection of the adapter 420 and the heat exchange body 410 and the current collector 430, and to reduce the connection difficulty and improve the connection quality.

[0162] In some embodiments, the sealing member 440 is arranged in the heat exchange body 410, and the current collector 430 is injection molded. Here, when the sealing member 440 is arranged in the heat exchange body 410, the current collector 430 is processed and formed by using an injection molding process, thereby reducing the molding difficulty of the current collector 430 and facilitating to improve the structural stability of the current collector 430 and to ensure the working performance of the current collector 430 to a certain extent.

[0163] That is, compared with arranging the sealing member 440 on the current collector 430, arranging the sealing member 440 in the heat exchange body 410 can reduce the molding difficulty of the current collector 430.

[0164] In some embodiments, the current collector 430 is a plastic member. That is, the current collector 430 is made of a plastic material, which facilitates to make the material of the current collector 430 the same as the material of the adapter 420, thereby facilitating to realize the fixed connection between the adapter 420 and the current collector 430, reducing the connection difficulty of the adapter 420 and the current collector 430, and improving the connection quality.

[0165] Meanwhile, by setting the current collector 430 to be made of a plastic material, the weight of the current collector 430 can be reduced and the manufacturing cost of the current collector 430 can be reduced.

[0166] In some embodiments, in combination with Figure 3 and Figure 4 As shown, the heat exchange body 410 is provided with a plurality of partition ribs 412 for partitioning a plurality of heat exchange channels 411. Here, the heat exchange body 410 is provided with a plurality of partition ribs 412, and the plurality of partition ribs 412 are used to partition a plurality of heat exchange channels 411 in the heat exchange body 410, thereby reducing the molding difficulty of the plurality of heat exchange channels 411. Meanwhile, the plurality of partition ribs 412 can also support the heat exchange body 410, thereby facilitating to improve the structural strength and the structural stability of the heat exchange body 410, to ensure the working performance of the heat exchange body 410 to a certain extent, and to prolong the service life of the heat exchange body 410.

[0167] Optionally, as shown in Figure 4 The sealing member 440 is provided with at least one insertion slot 441, and the at least one partition rib 412 is inserted into the insertion slot 441 to position the sealing member 440 in the heat exchange body 410 and to seal the heat exchange channel 411. In this way, while realizing the arrangement of the sealing member 440 in the heat exchange body 410 to seal the at least one heat exchange channel 411, the cooperation difficulty of the sealing member 440 and the heat exchange body 410 can be reduced, and the cooperation quality can be improved, so that the sealing member 440 can be stably arranged in the heat exchange channel 411, and the sealing effect of the sealing member 440 can be improved.

[0168] In some embodiments, in combination with Figure 3 and Figure 4As shown, the side wall of the blocking member 440 is provided with a limiting protrusion 442, which is adapted to be in contact with the end face of the partition rib 412 and / or the heat exchange body 410, so as to limit the length of the part of the blocking member 440 located in the heat exchange channel 411. Here, it is referred to that the limiting protrusion 442 is in contact with the end face of the partition rib 412; or, the limiting protrusion 442 is in contact with the end face of the heat exchange body 410; or, the limiting protrusion 442 is in contact with the end face of the partition rib 412 and the heat exchange body 410 at the same time, so as to limit the length of the part of the blocking member 440 located in the heat exchange channel 411, to a certain extent, avoid that the blocking member 440 cannot block the end opening of the heat exchange channel 411, that is, to a certain extent, avoid that part of the heat exchange medium is filled at the end opening of the heat exchange channel 411, so as to improve the blocking effect of the blocking member 440, and facilitate to reduce the weight of the heat exchanger 400.

[0169] In some embodiments, the limiting protrusion 442 is in contact with the adapter plate 423, so as to realize the contact and cooperation between the blocking member 440 and the adapter part 420, facilitate to support the blocking member 440 by the adapter part 420, improve the position stability of the blocking member 440, and to a certain extent, ensure the blocking effect of the blocking member 440.

[0170] In some embodiments, in combination with Figure 2 , Figure 3 and Figure 9 As shown, the adapter channel 421 includes a plurality of adapter channels 421, and the plurality of adapter channels 421 are correspondingly arranged with the plurality of heat exchange channels 411. Each of the flow distribution ports 432 is in communication with the heat exchange channel 411 through the adapter channel 421. So as to realize the one-to-one correspondence between the flow distribution port 432 and the heat exchange channel 411, thereby facilitating to transport the heat exchange medium flowing through the manifold 430 into the heat exchange channel 411 by the flow distribution port 432, reducing the transportation difficulty of the heat exchange medium, and making the heat exchanger 400 have the function of temperature adjustment, to a certain extent, ensuring the working performance of the heat exchanger 400.

[0171] In addition, by arranging the adapter part 420 into a plurality of adapter channels 421, and arranging the plurality of adapter channels 421 to be correspondingly arranged with the plurality of heat exchange channels 411, the heat exchange channel 411 can also be blocked by blocking the adapter channel 421, further reducing the blocking difficulty of the heat exchange channel 411.

[0172] In some embodiments, in combination with Figure 9 , Figure 10 and Figure 11As shown, the blocking member 440 and the current collector 430 are integrally formed to block the partial flow ports 432. Here, when the blocking member 440 is arranged on the current collector 430 and integrally formed with the current collector 430, the blocking member 440 can block the partial flow ports 432, because each flow port 432 is communicated with the heat exchange channel 411 through the adapter channel 421. In this way, the blocking member 440 can also block the partial heat exchange channels 411, so as to reduce the total amount of the heat exchange medium in the heat exchange body 410, thereby reducing the overall weight of the heat exchanger 400 and the weight of the battery device 100.

[0173] Meanwhile, by arranging the blocking member 440 and the current collector 430 as an integrally formed member, the matching connection between the blocking member 440 and the heat exchange body 410 can be omitted, the assembly difficulty of the blocking member 440 is reduced, and the connection strength between the blocking member 440 and the current collector 430 is increased, so that the blocking member 440 can be stably arranged on the current collector 430, and the working performance of the blocking member 440 is ensured to a certain extent.

[0174] In some embodiments, the current collector 430 is provided with a plurality of flow ports 432, and the blocking member 440 is integrally formed with the current collector 430 and blocks the partial flow ports 432, so as to block the corresponding heat exchange channels 411.

[0175] In some embodiments, as shown in Figure 9 As shown, the current collector 430 is provided with a through hole 434 formed as a draft hole, so as to reduce the difficulty of integrally forming the current collector 430.

[0176] In some embodiments, the battery device 100 includes a plurality of battery cell assemblies 120 and a plurality of heat exchangers 400, the plurality of battery cell assemblies 120 are arranged in multiple rows, and each row of battery cell assemblies 120 is arranged between two adjacent heat exchangers 400. In this way, the battery cell assemblies 120 can be simultaneously heat-exchanged by the two heat exchangers 400, so as to ensure the heat exchange effect of the heat exchanger 400 to a certain extent, thereby maintaining the temperature of the battery cell assemblies 120 in a suitable temperature range, prolonging the service life of the battery cell assemblies 120, and improving the use safety of the battery cell assemblies 120.

[0177] Hereinafter, the battery device 1000 of the embodiments of the present application will be described with reference to the accompanying drawings.

[0178] As shown in Figure 1 and Figure 2 The battery device 100 of the embodiments of the present application is used to provide electric energy.

[0179] Since the battery device 100 of this application embodiment has the above-mentioned technical effects, the electrical equipment 1000 of this application embodiment also has the above-mentioned technical effects. That is, by adopting the battery device 100 of this application, the working performance of the electrical equipment 1000 can be guaranteed to a certain extent, the safety of the electrical equipment 1000 can be improved, and the service life of the electrical equipment 1000 can be extended.

[0180] Meanwhile, because the battery device 100 is lightweight, when it is used to provide power to the electrical equipment 1000, the weight of the electrical equipment 1000 can be reduced. If the electrical equipment 1000 is formed into a vehicle, it will help extend the vehicle's range and, to a certain extent, prevent the battery device 100 from affecting the vehicle's acceleration and braking performance too much, thereby improving the vehicle's driving safety and enhancing the driving experience.

[0181] It is understood that other configurations and operations of the battery device 100 and the electrical device 1000 according to the embodiments of this application are known to those skilled in the art and will not be described in detail here.

[0182] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0183] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A battery device, characterized by, The application relates to a battery pack, comprising: a box (110); a battery cell assembly (120) arranged in the box (110); a heat exchanger (400) arranged in the box (110) and configured to exchange heat with the battery cell assembly (120); wherein the heat exchanger (400) comprises: a heat exchange body (410) comprising a plurality of heat exchange channels (411); an adapter (420) arranged at an end of the heat exchange body (410) and provided with an adapter channel (421) in communication with the heat exchange channels (411); a current collector (430) fixed to the adapter (420) and provided with a current collection cavity (433), a current collection port (431) and a plurality of shunt ports (432) in communication with the current collection cavity (433) and the heat exchange channels (411) through the adapter channel (421); a blocking member (440) arranged in the heat exchange body (410) to block at least one of the heat exchange channels (411) and / or arranged in the current collector (430) to block at least one of the shunt ports (432).

2. The battery device according to claim 1, characterized by The adapter (420) connects the blocking member (440) and the heat exchange body (410).

3. The battery device of claim 2, wherein The adapter (420) is overmolded on the blocking member (440) and the heat exchange body (410) to form an integral part.

4. The battery device of claim 3, wherein The adapter (420) is made of plastic.

5. The battery device of claim 3, wherein The adapter (420) comprises a sleeve ring (422) and an adapter plate (423), the sleeve ring (422) is sleeved on one end of the heat exchange body (410), the adapter plate (423) is arranged in the sleeve ring (422), the adapter channel (421) penetrates through the adapter plate (423), the sleeve ring (422) is overmolded on the heat exchange body (410), and the adapter plate (423) is overmolded on the blocking member (440).

6. The battery device of claim 5, wherein An outer surface of the heat exchange body (410) is provided with a first region having a roughness greater than that of other regions, and the first region is in contact with the sleeve ring (422).

7. The battery device of claim 5, wherein The adapter plate (423) is in contact with end faces of the blocking member (440) and the heat exchange body (410) respectively.

8. The battery device of claim 5, wherein, The blocking member (440) is used for blocking the heat exchange channels (411), and a part of the blocking member (440) protrudes out of the heat exchange channels (411) so that at least part of the blocking member (440) protrudes out of the heat exchange channels (411).

9. The battery device of claim 8, wherein, The adapter plate (423) is provided with a containing groove for containing the blocking member (440).

10. The battery device of claim 1, wherein, The adapter (420) is welded to the current collector (430).

11. The battery device of claim 1, wherein The adapter (420) is sleeved on one end of the current collector (430) facing the adapter (420).

12. The battery device of claim 1, wherein, The sealing member (440) is arranged in the heat exchange body (410), and the current collector (430) is injection molded.

13. The battery device of claim 12, wherein, The current collector (430) is a plastic part.

14. The battery device of any one of claims 1-13, wherein, The heat exchange body (410) is provided with a plurality of partition ribs (412) for partitioning the plurality of heat exchange channels (411). The sealing member (440) is provided with at least one insertion slot (441), and at least one of the partition ribs (412) is inserted into the insertion slot (441) so that the sealing member (440) is positioned in the heat exchange body (410) and blocks the heat exchange channels (411).

15. The battery device of claim 14, wherein, The side wall of the sealing member (440) is provided with a limiting protrusion (442) adapted to contact the end surface of the partition rib (412) and / or the heat exchange body (410) to define the length of the part of the sealing member (440) positioned in the heat exchange channel (411).

16. The battery device of any one of claims 1-13, wherein, The adapter channel (421) includes a plurality of adapter channels (421) corresponding to a plurality of heat exchange channels (411), and each shunt port (432) communicates with the heat exchange channel (411) through the adapter channel (421).

17. The battery device of claim 16, wherein, The sealing member (440) and the current collector (430) are an integral part to block part of the shunt port (432).

18. The battery device of claim 1, wherein, The battery device includes a plurality of battery cell assemblies (120) and a plurality of heat exchangers (400), and the plurality of battery cell assemblies (120) are arranged in multiple rows, and each row of battery cell assemblies (120) is arranged between two adjacent heat exchangers (400).

19. An electrical device, characterized by The battery device according to any one of claims 1-18 is used to provide electric energy.

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