Battery integrated box, new energy vehicle and equipment thereof

Abstract

The application relates to the technical field of power equipment cooling, and discloses a battery integrated box body, which comprises a bottom plate formed by adjacently and fixedly connecting a plurality of base plates, and cooling flow channels are integrally formed in the base plates; the two ends of the bottom plate are connected with connecting pieces for connecting the cooling flow channels on the adjacent base plates; a new energy automobile comprises a vehicle body, the vehicle body is provided with the battery box body; and a device utilizes the battery box body. According to the application, the cooling flow channels are integrally formed on the base plates, and the connecting pieces for connecting the adjacent cooling flow channels are connected at the two ends of the bottom plate, so that the bottom plate has good heat dissipation effect and high strength, and the problem that the comprehensive performance and the production cost of the battery box body are difficult to balance in the prior art is solved.

Description

Technical Field

[0001] This invention relates to the field of power equipment cooling technology, specifically to a battery integrated housing, a new energy vehicle and its equipment. Background Technology

[0002] Power electronic equipment generates a significant amount of heat during operation, requiring heat dissipation to ensure its proper functioning. Taking new energy vehicles as an example, cooling devices are typically installed inside the battery pack enclosure to control its temperature. Current cooling devices primarily utilize liquid cooling plates. The battery enclosure structure currently consists of a base plate and a frame welded around it. A liquid cooling plate is then fixed to the battery enclosure, utilizing the heat exchange medium flowing within the liquid cooling plate to dissipate heat from the battery.

[0003] Existing liquid cooling plates mainly include harmonica tube type, stamped type, blown type, and parallel flow tube type. Among them, harmonica tube type and blown type liquid cooling plates have the advantages of simple structure, low cost, and light weight, but their load-bearing capacity is poor and they are prone to deformation and damage during use. Stamped type and parallel flow tube type liquid cooling plates have better heat exchange effect, but their structure is complex, manufacturing cost is high, and installation is difficult. Therefore, it is necessary to improve the existing cooling devices to overcome their complex structure and poor heat dissipation effect.

[0004] In summary, the existing battery housing structure fails to achieve a good balance between overall performance, processing costs, and installation costs. Furthermore, in the current battery housing structure, the liquid cooling plate is mounted on the base plate, requiring heat transfer from the base plate during the heat dissipation process, resulting in low heat dissipation efficiency within the battery housing. The processing and installation of the liquid cooling plate itself incur significant costs, and mounting the liquid cooling plate on the base plate increases the weight of the battery housing, which is also detrimental to the range of new energy vehicles. Therefore, it is necessary to improve the existing battery housing structure to balance the overall performance and production costs of the battery housing. Summary of the Invention

[0005] The present invention aims to provide a battery integrated housing, a new energy vehicle and related equipment to solve the problem of balancing the overall performance and production cost of battery housings in the prior art.

[0006] To solve the above problems, the present invention adopts the following technical solution: a battery integrated box, including a base plate formed by several adjacent and fixedly connected substrates, wherein a cooling channel is integrally formed in the substrate; both ends of the base plate are connected to connectors for connecting the cooling channels on adjacent substrates.

[0007] The principle of this solution is as follows: In this application, the base plate is a plate-like structure formed by several adjacent and fixedly connected substrates, giving the base plate strong strength. Cooling channels are opened in the substrates. During use, heat exchange medium flows into the cooling channels in the substrates, which can dissipate heat from the battery box. It is equivalent to directly forming the cooling channels in the base plate, eliminating the need to install a separate liquid cooling plate with cooling channels. Moreover, in this application, multiple substrates directly form the base plate. Since there is no need to introduce a new liquid cooling plate, it can not only effectively simplify the structure of the cooling device and reduce the weight of the cooling device, but also the cooling channels are equivalent to being directly opened in the base plate, allowing the heat in the battery box to be quickly exchanged and carried away, thereby giving the battery box a better cooling effect.

[0008] In this application, connectors are used to connect the cooling channels of adjacent substrates, thereby enabling the adjacent cooling channels to communicate. When heat exchange medium is injected into the cooling channels, the heat exchange medium can flow sequentially along the cooling channels within the substrate, and the heat exchange medium can flow through all cooling channels in sequence, thereby enabling the heat exchange medium to flow through the entire base plate and achieve a good cooling effect. At the same time, since connectors are connected to both ends of the base plate, the connectors can play an auxiliary role in fixing the adjacent substrates, thereby effectively improving the overall strength of the base plate.

[0009] The beneficial effects of this plan are:

[0010] 1. The battery housing has a good cooling effect: Compared with the existing battery housing with a liquid cooling plate connected to the base plate, the base plate in this application is composed of multiple substrates, and then cooling channels are opened in the substrates, so that the base plate can directly play the cooling role of the liquid cooling plate. It is equivalent to integrating the liquid cooling plate with the base plate. Thus, when the heat exchange medium flows through the cooling channels, the battery housing can be cooled and dissipated quickly and fully, achieving a better cooling effect.

[0011] 2. The battery box has good strength: In this application, the base plate is made of multiple base plates fixedly connected together. While ensuring that the battery box has good heat dissipation performance, it also has good strength. Moreover, by setting connectors, the connectors can play an auxiliary supporting and fixing role between adjacent base plates, thereby making the connection between base plates more stable and further improving the strength of the overall structure.

[0012] 3. Lower Manufacturing Costs: In this application, the cooling channels are directly formed within the substrate. Combined with existing technologies, the substrate and its cooling channels can be obtained in one step using lightweight materials such as extruded aluminum alloys. The substrate and cooling channels are easy to process and have a fast forming speed, resulting in low forming costs. Then, friction stir welding is used to form a stable connection between adjacent substrates. The entire processing is simple and low-cost. Furthermore, the connection between adjacent cooling channels is achieved through connectors at both ends of the base plate, eliminating the need to process connecting channels on the substrate, simplifying the substrate processing steps, further reducing manufacturing difficulty and costs. Therefore, the battery integrated housing of this application ensures good mechanical and heat dissipation performance while also offering advantages in ease of processing and low production costs, achieving a good balance between overall battery housing performance and processing costs.

[0013] 4. The cooling channels can withstand high pressure:

[0014] During the research and development process, the inventors found that liquid cooling plates in existing technologies generally only have the function of cooling and heat dissipation, but cannot play a heating role. However, batteries need to be in a certain temperature range to work normally during use. Therefore, when the temperature is low, the battery needs to be heated. In existing technologies, heaters are generally used to heat the heat exchange medium, and then the heat exchange medium is used to heat the battery. This results in the heat exchange system structure of the battery box being complex and occupying a large space in existing technologies.

[0015] To address this problem, the inventors designed a heat exchange system that can both cool and heat the battery casing. The system works by using a circulating heat exchange medium on a liquid-cooled plate and controlling its flow direction to switch between cooling and heating functions. During cooling, the liquid-cooled plate acts as an evaporator to cool the battery casing; during heating, it acts as a condenser to heat the casing. Furthermore, during heating, the heat exchange medium within the liquid-cooled plate is under high temperature and pressure. Existing liquid-cooled plates cannot withstand the high pressure of the heat exchange medium during heating, easily leading to leaks.

[0016] In this application, since the cooling channel is integrally formed within the substrate, when the heat exchange medium flows through the cooling channel to perform the heating function, even if the pressure of the heat exchange medium is high, the cooling channel on the substrate can stably transmit the heat exchange medium to achieve heat exchange. Therefore, in special application scenarios where the cooling channel needs to withstand high pressure, the battery housing in this application can achieve stable transmission of the heat exchange medium.

[0017] 5. Lighter overall weight of the battery box: In this application, the original base plate and liquid cooling plate are directly integrated, so that the multiple fixedly connected base plates can not only serve as the load-bearing function of the base plate, but also achieve the effect of heat dissipation of the battery box. The entire base plate structure is simpler and the weight is reduced. For power equipment such as new energy vehicles, this can effectively enhance the driving range of new energy vehicles.

[0018] Preferably, as an improvement, the connector includes a connecting plate fixedly connected to the end of the substrate, the connecting plate having a plurality of connecting channels, and the cooling channels on adjacent substrates are all connected to the connecting channels by branch channels.

[0019] In this solution, after the connecting plate is fixedly connected to the substrate, the adjacent cooling channels can be connected through the connecting channel and the branch channel. The connecting plate has a simple structure and is easy to install.

[0020] Preferably, as an improvement, the connecting plate is provided with a connecting groove, and one or more connecting channels are connected to the connecting groove.

[0021] In this solution, connecting grooves are set on the connecting plate, and one or more connecting channels are connected to these grooves. When there are two or more connecting channels, heat exchange medium can be injected into the connecting grooves. The heat exchange medium can simultaneously enter the bottom plate through two connecting channels, thereby improving the efficiency of the heat exchange medium entering the bottom plate and enhancing the heat exchange effect. Simultaneously, because the heat exchange medium enters the bottom plate through different connecting channels, when the heat exchange medium enters the bottom plate from a single inlet and flows out from a single outlet, the temperature of the heat exchange medium becomes close to the actual temperature of the bottom plate due to heat exchange, resulting in a decrease in cooling or heating effect closer to the outlet. This solution, by setting multiple inlets, effectively mitigates the impact of this problem and promotes uniform heat exchange in the bottom plate. Therefore, this solution can effectively improve the heat exchange effect of the bottom plate when the bottom plate area is large or the required heat exchange efficiency is high.

[0022] Preferably, as an improvement, the connecting plate has a connecting groove, and a sealing plate for sealing the connecting groove is fixedly connected to the connecting plate, the sealing plate and the connecting groove forming the connecting flow channel.

[0023] In this solution, a connecting groove is directly opened on the connecting plate, and then the connecting groove is sealed by a sealing plate, so that the sealing groove serves as a connecting flow channel. The sealing groove is easy to process and the sealing plate is easy to install, and the processing of the connecting flow channel can be completed at a low processing cost.

[0024] Preferably, as an improvement, the connecting plate has an installation groove, the sealing plate is fixedly connected in the installation groove, and the side of the sealing plate is flush with the side of the connecting plate.

[0025] In this design, by setting an installation groove on the connecting plate, the sealing plate can be quickly and accurately installed into the installation groove for fixation. At the same time, the side of the sealing plate is flush with the side of the connecting plate, so that the side of the connecting plate is still a complete flat surface, which facilitates the connection between the connecting plate and other components inside the battery box.

[0026] Preferably, as an improvement, the substrate has multiple cooling channels, each of which is divided into multiple channel groups, and adjacent channel groups are connected by the connector.

[0027] In this solution, multiple cooling channels are set on a substrate and divided into multiple groups. Then, the adjacent groups of channels are connected by the connecting channels on the connecting plate, so that the flow rate of the heat exchange medium in the substrate can be increased, thereby improving the heat dissipation performance.

[0028] Preferably, as an improvement, the connecting plate is connected to a connector, and the substrate is provided with a connecting hole that mates with the connector.

[0029] In this solution, the connection head and mating hole are used to enable the connection plate and the substrate to quickly and accurately form a mating during installation. At the same time, the connection strength between the connection plate and the substrate is improved, thereby enhancing the overall structural strength.

[0030] Preferably, as an improvement, one of the cooling channels is the connecting hole.

[0031] In this solution, one of the cooling channels is used as a connecting hole, which avoids the need to process mating holes on the substrate. The mating hole is directly formed when the cooling channel is formed on the substrate, reducing processing steps and lowering costs.

[0032] Preferably, as an improvement, the connecting plate and the base plate are provided with a slot structure for mutual insertion.

[0033] In this solution, the slot can be set on the substrate or the connecting plate. When the connecting plate is connected to the substrate, it is first inserted through the slot structure, and then the connecting plate and the substrate are fixed, thereby improving the connection strength between the substrate and the insertion plate.

[0034] A new energy vehicle includes a vehicle body, on which the battery box is provided.

[0035] A device that utilizes the aforementioned battery housing.

[0036] In this embodiment, for devices that use battery housing structures, such as commercial vehicles, buses, transport vehicles, or other power equipment, good heat dissipation performance can be achieved while ensuring good strength of the battery housing. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of Embodiment 1 of the present invention.

[0038] Figure 2 This is an exploded view of the connection between the connecting plate, sealing plate, and substrate in Embodiment 1.

[0039] Figure 3 This is a schematic diagram of the flow path of the heat exchange medium in Embodiment 1 of the present invention.

[0040] Figure 4 This is a cross-sectional view of the connection between the substrate and the connecting plate in Embodiment 2 of the present invention.

[0041] Figure 5 A schematic diagram of Embodiment 4 of the present invention.

[0042] Figure 6 This is a cross-sectional view of the connection between the substrate and the connecting plate in Embodiment 4 of the present invention.

[0043] Figure 7 This is a schematic diagram of the flow path of the heat exchange medium in Embodiment 4 of the present invention.

[0044] Figure 8 This is a cross-sectional front view of the connection between the substrate and the connecting plate in Embodiment 5 of the present invention. Detailed Implementation

[0045] The following detailed description illustrates the specific implementation method:

[0046] The reference numerals in the accompanying drawings include: base plate 1, base plate 101, cooling channel 1011, connecting plate 2, connecting groove 201, branch channel 202, mounting groove 203, connecting groove 204, connecting channel 205, sealing plate 3, and connector 4.

[0047] Example 1

[0048] This embodiment is basically as shown in the attached figure. Figure 1 As shown: A battery integrated housing includes a base plate 1 formed by horizontally adjacent and fixedly arranged several substrates 101. The number of substrates 101 can be one or more, the specific number being determined according to the size of the base plate 1. When there are multiple substrates 101, adjacent substrates 101 are fixed to each other by friction stir welding. Before the substrates 101 are fixed to each other, a combination... Figure 2The substrate 101 has cooling channels 1011 arranged along the length of the substrate 101. In this embodiment, the cooling channels 1011 in the substrate 101 are integrally formed by extrusion, and multiple cooling channels 1011 are formed in the same substrate 101. The multiple cooling channels 1011 are divided into multiple channel groups. In this embodiment, the number of channel groups in the same substrate 101 is six groups, and the number of cooling channels 1011 in each channel group is three. In other embodiments other than this embodiment, the number of channel groups in the same substrate 101 and the number of cooling channels 1011 in the channel groups can be changed according to actual cooling requirements, which will not be elaborated here.

[0049] like Figure 1 As shown, both the front and rear ends of the base plate 1 are connected to connectors. These connectors are used to connect adjacent cooling groups. In this embodiment, the connector is a connecting plate 2 fixedly connected to the end of the base plate 1. Figure 2 The top surface of the connecting plate 2 has a downwardly extending connecting groove 201, and a mounting groove 203. The area of ​​the mounting groove 203 is larger than that of the connecting groove 201, so that the bottom wall of the mounting groove 203 and the side wall of the connecting groove 201 form a stepped surface. A sealing plate 3 is fixedly connected to the mounting groove 203 by friction stir welding. The bottom surface of the sealing plate 3 is in contact with the bottom wall of the mounting groove 203, and the sealing plate 3 seals the top opening of the connecting groove 201, so that the sealing plate 3 and the connecting groove 201 form a connecting flow channel. The connecting plate 2 has a branch channel 202 connecting the cooling group and the connecting flow channel. The connecting channel 202 connects the cooling flow channels 1011 between adjacent cooling groups. To avoid the sealing plate 3 affecting the flatness of the top surface of the connecting plate 2, the top surface of the sealing plate 3 is flush with the top surface of the connecting plate 2.

[0050] like Figure 2 As shown, the connecting plate 2 faces the side wall of the substrate 101 ( Figure 2 The connector 4 is integrally formed on the rear side wall of the substrate 101. The end of the substrate 101 is provided with a mating hole that mates with the connector 4. In this embodiment, when the substrate 101 is extruded, an additional cooling channel 1011 is formed, so that the additional cooling channel 1011 can be directly used as a mating hole, thereby eliminating the need to process the mating hole at the end of the substrate 101, simplifying the processing process and reducing the processing cost.

[0051] like Figure 3 As shown, in this embodiment, the heat exchange medium of the battery housing during use is... Figure 3 The water nozzle at the upper right end of the connecting plate 2 injects the heat exchange medium into the connecting channel. In other embodiments besides this one, other structures besides the water nozzle can be used to inject the heat exchange medium into the connecting channel, which will not be listed here; then the heat exchange medium passes through... Figure 2After passing through the branch channel 202, the medium enters the cooling channel 1011 and then flows from the other end of the cooling channel 1011 into the connecting channel of the connecting plate 2 on the opposite side. It then flows into the next adjacent cooling group through the guide of the connector until the heat exchange medium flows through all the cooling groups in sequence and then flows out from the lower left end of the connecting plate 2, so that the heat exchange medium can completely flow through the bottom plate 1 and cool the bottom plate 1.

[0052] A new energy vehicle includes a vehicle body, in which the aforementioned battery box is installed; and a device that uses the aforementioned battery box, enabling the device to have good heat dissipation and strength. In particular, for a heat exchange system designed by the inventor that simultaneously provides cooling and heating functions, during the heating process, because the cooling channel 1011 is integrally formed within the substrate 101, and adjacent substrates 101 are fixed together by friction stir welding, and the connecting plate 2 is also fixed to the substrate 101 by friction stir welding, the cooling channel 1011 in the liquid cooling plate can withstand the greater pressure of the heat exchange medium, ensuring the stable operation of the entire heat exchange system.

[0053] Example 2

[0054] The difference between Embodiment 2 and Embodiment 1 is that in Embodiment 1, connector 4 is used to connect to the substrate 101, while in this embodiment, as shown... Figure 4 As shown, a slot structure for mutual insertion is provided between the connecting plate 2 and the substrate 101, so that the connecting plate 2 and the substrate 101 form a stable connection. In this embodiment, the slot is provided on the left side wall of the connecting plate 2, and the right end of the substrate 101 is inserted into the slot. Then, the substrate 101 and the connecting plate 2 are welded by through-through friction stir welding. In other embodiments other than this embodiment, the slot can be provided on the substrate 101, and the connecting plate 2 can be inserted into the slot on the substrate 101, so that the connecting plate 2 and the substrate 101 can also form a stable fit. This will not be described in detail here.

[0055] Example 3

[0056] The difference between Embodiment 3 and Embodiment 2 is that, in Embodiment 2, a slot structure is used to connect the substrate 101 and the connecting plate 2. In this embodiment, when the substrate 101 and the connecting plate 2 are connected by a slot structure, a connector 4 can also be provided between the substrate 101 and the connecting plate 2 to enhance the connection strength between the connecting plate 2 and the substrate 101. When the connecting plate 2 and the substrate 101 are engaged, the connector 4 can guide the substrate 101 and the connecting plate 2 to engage quickly and accurately. It also plays a stabilizing role for the substrate 101 and the connecting plate 2 during the friction stir welding process, thereby making the welding more stable.

[0057] Example 4

[0058] The difference between Example 4 and Example 3 is as follows: Figure 5 and Figure 6 As shown, in this embodiment, both connecting plates 2 are formed with connecting grooves 204 arranged along the length direction of the connecting plate 2, combined with Figure 7 One or more connecting channels on the connecting plate 2 are connected to the connecting groove 204 by a connecting channel 205. In this embodiment, the connecting groove 204 is connected to two of the connecting channels. One of the connecting channels is located at the end of the connecting plate 2 and the other is located in the middle of the connecting plate 2. The connecting channels located at the ends of the two connecting plates 2 are located at both ends of the bottom plate 1.

[0059] In this embodiment, by setting a connecting groove 204 on the connecting plate 2 and connecting two connecting channels to the connecting groove 204, and combining the positions of the connecting channels connected to the connecting groove 204, the cooling group on the entire base plate 1 is divided into upper and lower parts. The cooling channels 1101 of the two cooling groups are independent of each other, and all the cooling channels 1101 in each cooling group are connected in the order of sequential connection as in Embodiment 1. Therefore, the flow path of the heat exchange medium in the entire base plate 1 is basically as follows. Figure 7 As shown by the dashed line.

[0060] Taking the heat exchange medium flowing from the lower right of the base plate 1 into the connecting groove 204 in the right connecting plate 2 as an example, the heat exchange medium first flows into the connecting groove 204 located on the right side of the base plate 1. A portion of the heat exchange medium flows into the connecting channel corresponding to the first sealing plate 3 at the lower right of the right connecting plate 2, and then flows into the heat exchange channel group in the lower half of the base plate 1 to perform heat exchange operation on the base plate 1. Finally, it flows into the connecting channel corresponding to the sealing plate 3 in the middle of the left connecting plate 2, and then flows into the connecting groove 204 in the left connecting plate 2. The connecting groove 204 in the side connecting plate 2 flows out of the bottom plate 1; another part of the heat exchange medium in the connecting groove 204 of the right connecting plate 2 flows into the connecting channel corresponding to the sealing plate 3 in the middle of the connecting plate 2, and then flows into the heat exchange channel group in the upper half of the bottom plate 1 to perform heat exchange operation on the bottom plate 1. Finally, it flows into the connecting channel corresponding to the sealing plate 3 in the upper part of the left connecting plate 2, and then flows into the connecting groove 204 in the left connecting plate 2, and then flows out of the bottom plate 1 from the connecting groove 204 in the left connecting plate 2.

[0061] In this embodiment, the heat exchange channel assembly of the entire base plate 1 is divided into two independent parts by connecting the two connecting channels on the connecting plate 2 and the connecting groove 204. The heat exchange medium in the connecting groove 204 simultaneously enters the heat exchange channel assembly of the two separated parts for heat exchange. Taking refrigeration as an example, the lower temperature heat exchange medium flows in from one end and the middle of the base plate 1 and flows out from the middle and the other end on the opposite side of the base plate 1. This achieves a more uniform cooling or heating effect compared to the method of setting only one inlet and outlet in Embodiment 1, thus providing a more uniform heating or cooling effect on the battery in the battery box, which is conducive to the battery working more stably and efficiently. In other embodiments besides this one, different numbers of connecting channels can be set to connect the connecting groove 204 according to the actual heat exchange requirements, so as to reasonably supply heat exchange medium to different positions of the base plate 1, so that the base plate 1 meets the heat exchange requirements.

[0062] Example 5

[0063] The difference between Example 5 and Example 4 is as follows: Figure 8 As shown, when forming a slot on the left side wall of the connecting plate 2, the side wall of the slot is inclined towards the middle of the connecting plate 2. Correspondingly, the top and bottom surfaces of the right end of the substrate 101 are provided with mating surfaces that are inclined inwards towards the substrate 101. The inclination angle of the mating surfaces is equal to that of the slot. When the right end of the substrate 101 is inserted into the slot, along... Figure 8 The substrate 101 is inserted into the slot perpendicular to the paper surface, thereby making the right end of the substrate 101 fit with the left end of the connecting plate 2.

[0064] In this embodiment, by providing an inclined surface in the slot at the left end of the connecting plate 2 and a matching mating surface at the right end of the substrate 101, on the one hand, the mating surface and the inclined surface of the slot can form a locking relationship, thereby making the connection between the connecting plate 2 and the substrate 101 more stable and further enhancing the structural strength of the battery box; on the other hand, since the mating surface on the substrate 101 is inclined inwards, when the substrate 101 and the connecting plate 2 are welded using through-through friction stir welding, even if the material at the weld seam melts, the molten material tends to move inwards towards the interior of the substrate 101 (corresponding to...). Figure 8 The leftward aggregation of molten material can reduce the flow of molten material into the heat exchange channel 1011 and prevent blockage of the heat exchange channel 1011.

[0065] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A battery integrated housing, characterized in that: The system includes a base plate formed by fixing several adjacent substrates together, with cooling channels integrally formed within each substrate. Both ends of the base plate are connected to connectors for connecting the cooling channels on adjacent substrates. Each connector includes a connecting plate fixedly connected to the end of a substrate, and the connecting plate has several connecting channels. The cooling channels on adjacent substrates are connected to these connecting channels by branch channels. The connecting plate has a connecting groove, with one or more connecting channels communicating with it. The entire heat exchange channel assembly of the base plate is divided into two or more independent parts. The heat exchange medium flows in from the connecting groove on one side of the base plate, and a portion of the heat exchange medium flows into the first connecting channel on the connecting plate on one side of the base plate, and then flows from this connecting channel into the corresponding independent part of the base plate. The heat exchange medium in the bottom plate is exchanged through the heat exchange channel assembly. The medium then flows into the connecting channel corresponding to the connecting plate on the other side of the bottom plate, and from there into the connecting groove in the connecting plate on the other side of the bottom plate. Finally, it flows out of the bottom plate through the connecting groove. The remaining heat exchange medium in the connecting groove of the connecting plate on one side of the bottom plate flows into the connecting channel corresponding to the remaining independent part of the bottom plate. It then flows into the heat exchange channel assembly corresponding to the independent part of the bottom plate to exchange heat with the bottom plate. Finally, it flows into the connecting channel corresponding to the connecting plate on the other side of the bottom plate, and from there into the connecting groove in the connecting plate on the other side of the bottom plate. Finally, it flows out of the bottom plate through the connecting groove.

2. The battery integrated housing according to claim 1 is characterized in that: The connecting plate has a connecting groove, and a sealing plate for sealing the connecting groove is fixedly connected to the connecting plate. The sealing plate and the connecting groove form the connecting flow channel.

3. The battery integrated housing according to claim 2, characterized in that: The connecting plate has an installation groove, and the sealing plate is fixedly connected in the installation groove. The side of the sealing plate is flush with the side of the connecting plate.

4. The battery integrated housing according to claim 1, characterized in that: The substrate has multiple cooling channels, each of which is divided into multiple channel groups, and adjacent channel groups are connected by the connector.

5. A battery integrated housing according to claim 1, characterized in that: The connecting plate is connected to a connector, and the base plate is provided with a connecting hole that mates with the connector.

6. A battery integrated housing according to claim 5, characterized in that: One of the cooling channels is the aforementioned connecting hole.

7. A battery integrated housing according to claim 1, characterized in that: The connecting plate and the base plate are provided with a slot structure for mutual insertion.

8. A new energy vehicle utilizing a battery integrated housing as described in any one of claims 1-7.

9. An apparatus utilizing a battery integrated housing as described in any one of claims 1-7.

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