Battery management device and battery pack

Abstract

The utility model provides a battery management device and a battery pack. The battery management device comprises a shell, a main board assembly and a slave board assembly, a partition plate is arranged in the inner space of the shell and used for dividing the inner space of the shell into at least two cavities. And the main board assembly and the slave board assembly are respectively arranged in different chambers. According to the battery management device and the battery pack provided by the invention, the BMC and CMC assembly work can be completed at the same time only by positioning the shell in the battery pack, and by reducing the use amount of the bracket, the assembly difficulty, the preparation cost and the weight of the battery pack can be reduced, and the space utilization rate of the battery pack can be further improved; therefore, the energy density of the battery pack is improved. Meanwhile, the main board assembly and the slave board assembly are arranged in different cavities in the shell to ensure that the main board assembly and the slave board assembly have better insulativity, so that the main board assembly and the slave board assembly are prevented from influencing each other during operation, heat dissipation is facilitated, and stable operation of the battery management device can be ensured.

Description

TECHNICAL FIELD

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

[0002] With the continuous development of new energy vehicles, power batteries gradually develop towards high energy density and high volume utilization rate. When designing the battery pack (Pack) internally, the space occupancy rate of the battery cell gradually increases, and the space left for other structural parts and electrical devices is less and less.

[0003] The BMS (Battery Management System) module is used for monitoring and controlling the battery pack. The BMS module usually includes a battery management control board (BMC, hereinafter referred to as the main board) and a cell sampling control board (CMC, hereinafter referred to as the slave board). Most battery packs need to place at least one main board and one slave board, and there are also cases where one main board and multiple slave boards need to be placed in the battery pack.

[0004] The applicant finds that in the related art, the main board and the slave board are two independent components, and the two are separately fixed and connected in the battery pack by a support. Since multiple supports occupy a large space in the battery pack, it will adversely affect the energy density and space utilization rate of the battery pack. At the same time, multiple supports will also lead to complex assembly of the battery pack, high cost and weight. Practical new type content

[0005] Therefore, the purpose of the present application is to provide a battery management device and a battery pack to at least partially solve the problem of adversely affecting the overall performance of the battery pack due to the need for separate supports for the main board and the slave board.

[0006] To achieve the above purpose, the first aspect of the present application provides a battery management device, comprising: a housing, a main board assembly and a slave board assembly; a partition plate is arranged in the internal space of the housing, and the partition plate is used to divide the internal space of the housing into at least two chambers; the main board assembly and the slave board assembly are arranged in different chambers.

[0007] Optionally, the partition plate is provided with a plurality of flow channels for circulating heat exchange medium.

[0008] Optionally, the housing comprises a middle base plate and two covers, the two covers are respectively connected to the opposite sides of the middle base plate, each cover and the middle base plate form the chamber, and the part of the middle base plate between the two chambers constitutes the partition plate.

[0009] Optionally, the two opposite plate surfaces of the intermediate substrate are formed with connecting frames protruding from the plate surfaces, and the cover is detachably sleeved on the corresponding connecting frame.

[0010] Optionally, the connecting frame is snap-fitted with the cover.

[0011] Optionally, the main plate assembly and the slave plate assembly are respectively connected in the corresponding cover.

[0012] Optionally, at least one of the main plate assembly and the slave plate assembly comprises a carrier plate connected with a device, and the cover is provided with a connecting column assembly adjacent to the surface of the intermediate substrate, and the carrier plate is connected to the corresponding cover through the connecting column assembly.

[0013] Optionally, the connecting column assembly comprises an intermediate column body thermally connected with the carrier plate, and a supporting column body adjacent to the intermediate column body; the supporting column body abuts against the plate surface of the carrier plate adjacent to the cover.

[0014] Optionally, the device comprises a terminal, and a through avoiding opening is provided on at least the cover, and the terminal is exposed through the avoiding opening.

[0015] Optionally, the partition plate is provided with a plurality of flow channels for circulating heat exchange medium; the intermediate substrate is provided with a plurality of through holes penetrating in the direction perpendicular to the thickness direction of the partition plate, and the through holes are configured as the flow channels.

[0016] Optionally, the radial cross-sectional shape of the through hole is rectangular, the dimension of the rectangle along the thickness direction of the partition plate is defined as the height of the rectangle, and the dimension of the rectangle perpendicular to the height is defined as the width of the rectangle; the height of the rectangle is 5-10 mm, and the width of the rectangle is 10-15 mm.

[0017] Based on the same inventive concept, the second aspect of the present application further provides a battery pack comprising the battery management device according to the first aspect.

[0018] As can be seen from the above, the battery management device and the battery pack provided by the present application integrate the main plate assembly and the slave plate assembly in the same shell, which can reduce the overall volume of the BMS module on the one hand, thereby improving the space utilization of the battery pack; on the other hand, only the shell needs to be positioned in the battery pack to complete the assembly of the BMC and the CMC at the same time, by reducing the amount of support used, not only can the assembly difficulty, the preparation cost and the weight of the battery pack be reduced, but also the space utilization of the battery pack can be further improved, thereby improving the energy density of the battery pack.

[0019] Meanwhile, the main plate assembly and the slave plate assembly are arranged in different cavities in the shell to ensure good insulation therebetween, thereby avoiding mutual influence of the main plate assembly and the slave plate assembly during operation, facilitating heat dissipation, and ensuring stable operation of the battery management device. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present application or related art, the drawings needed to be used in the embodiments or related art description will be briefly introduced. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort.

[0021] Figure 1 It is a perspective view of the battery management device according to an embodiment of the present application.

[0022] Figure 2 It is an exploded view of the battery management device according to an embodiment of the present application.

[0023] Figure 3 It is a perspective view of the middle substrate of the battery management device according to an embodiment of the present application.

[0024] Figure 4 It is a perspective view of the cover body with the main plate assembly or the slave plate assembly of the battery management device according to an embodiment of the present application.

[0025] Figure 5 It is a perspective view of the middle substrate of the battery management device according to an embodiment of the present application. Figure 2 It is an enlarged view of part A of the middle substrate.

[0026] Figure 6 It is a perspective view of the middle substrate of the battery management device according to another structure of an embodiment of the present application.

[0027] Explanation of reference signs:

[0028] 100, shell; 200, partition plate; 300, avoiding opening;

[0029] 400, main plate assembly; 410, bearing plate; 420, terminal;

[0030] 500, slave plate assembly; 600, flow channel;

[0031] 700, middle substrate; 710, connecting frame; 711, clamping protrusion; 720, through hole;

[0032] 800, cover body; 810, connecting column assembly; 811, middle column body; 8111, supporting column segment; 8112, hot melting column segment; 812, supporting column body; 813, reinforcing rib; 820, clamping hole. DETAILED DESCRIPTION

[0033] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and in conjunction with the specific embodiments.

[0034] It should be noted that the relative arrangement of the components, numerical expressions and values set forth in these embodiments do not limit the scope of the present application unless otherwise specifically stated.

[0035] It should be understood that the sizes of the various portions shown in the drawings are not necessarily drawn to scale for the sake of convenience of description.

[0036] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the scope of the application or its application or uses.

[0037] It should be noted that unless otherwise defined, technical terms or scientific terms used in the embodiments of the present application should be understood as their common meanings to those skilled in the art to which the present application pertains. The terms "first", "second" and similar terms used in the embodiments of the present application do not represent any order, number or importance, but are only used to distinguish different components. The terms "include" or "contain" and similar terms mean that the elements or objects before the terms encompass the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms "connect" or "connected" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms "up", "down", "left", "right" and the like are only used to represent relative positional relationships, and when the absolute positions of the described objects are changed, the relative positional relationships can also be changed accordingly.

[0038] Figure 1 a perspective view of a battery management device is shown, Figure 2 an exploded view of a battery management device is shown.

[0039] As Figure 1 and Figure 2 The embodiments of the present application provide a battery management device, comprising: a housing 100, a main board assembly 400 and a slave board assembly 500; a partition plate 200 is arranged in the internal space of the housing 100, and the partition plate 200 is used to divide the internal space of the housing 100 into at least two chambers; the main board assembly 400 and the slave board assembly 500 are arranged in different chambers respectively.

[0040] Illustratively, the chamber can be a closed space; or the chamber can be a space communicating with the outside through an opening.

[0041] Exemplarily, one, two or more partition plates 200 can be arranged in the inner space of the shell 100 to divide the inner space of the shell 100 into two or more chambers. The number and relative positions of the partition plates 200 can be adaptively designed according to the number requirement, distribution position and space requirement of the chambers, which are not limited herein.

[0042] In the embodiment, the mainboard assembly 400 for implementing the mainboard function and the slaveboard assembly 500 for implementing the slaveboard function are integrated in the same shell 100, and when the battery pack is assembled, the mainboard assembly 400 and the slaveboard assembly 500 can be simultaneously assembled by positioning the shell 100 in the battery pack. Moreover, the mainboard assembly 400 and the slaveboard assembly 500 are arranged in different chambers in the shell 100 respectively, which can ensure good insulation between the two assemblies to avoid mutual influence between the two assemblies, thereby improving the stability of the battery management device.

[0043] The battery management device provided in the embodiment integrates the mainboard assembly 400 and the slaveboard assembly 500 in the same shell 100, which can reduce the overall volume of the BMS module, thereby improving the space utilization of the battery pack using the battery management device of the embodiment. On the other hand, the assembly of the BMC and the CMC can be simultaneously completed by positioning the shell 100 in the battery pack, which can reduce the assembly difficulty, preparation cost and weight of the battery pack, and further improve the space utilization of the battery pack, thereby improving the energy density of the battery pack.

[0044] Meanwhile, the mainboard assembly 400 and the slaveboard assembly 500 are arranged in different chambers in the shell 100 to ensure good insulation between the two assemblies, thereby avoiding mutual influence between the mainboard assembly 400 and the slaveboard assembly 500 during operation, facilitating heat dissipation, and ensuring stable operation of the battery management device of the embodiment.

[0045] For example, Figure 1 and Figure 2 In some embodiments, the partition plate 200 is provided with a plurality of flow channels 600 for flowing the heat exchange medium.

[0046] Exemplarily, each flow channel 600 can be directly communicated with the outside to enable air or cooling liquid as the heat exchange medium to flow in the flow channel 600.

[0047] Exemplarily, each flow channel 600 can be communicated with a medium source (such as a liquid pump for providing cooling liquid) through a pipeline to enable cooling liquid as the heat exchange medium to flow in the flow channel 600.

[0048] Exemplarily, the plurality of flow channels 600 can be arranged in a single row with parallel intervals, or can be arranged in double rows or multiple rows.

[0049] For example, at least two of the plurality of flow channels 600 can intersect.

[0050] In combination with the foregoing, it can be understood that the shell 100 is divided into chambers by the partition plate 200, that is, the same partition plate 200 can be in contact with the space in at least two chambers. Therefore, by providing the flow channel 600 in the partition plate 200, the heat exchange medium flowing through the partition plate 200 can exchange heat with at least two chambers, efficiently exchange heat with the main plate assembly 400 and / or the slave plate assembly 500 in the shell 100, control the temperature of the main plate assembly 400 and the slave plate assembly 500 within a preset temperature range, and ensure that the main plate assembly 400 and the slave plate assembly 500 can operate stably, thereby helping to prolong the service life of the battery management device.

[0051] Figure 3 A perspective view of the intermediate substrate 700 is shown as follows: Figure 2 and Figure 3 In some embodiments, the shell 100 includes an intermediate substrate 700 and two cover bodies 800, the two cover bodies 800 are respectively connected to opposite sides of the intermediate substrate 700, each cover body 800 and the intermediate substrate 700 enclose a chamber, and the part of the intermediate substrate 700 between the two chambers is configured as a partition plate 200.

[0052] For example, the cover body 800 and the intermediate substrate 700 can be detachably connected or fixedly connected.

[0053] For example, the main plate assembly 400 can be connected to the intermediate substrate 700 or the cover body 800; similarly, the slave plate assembly 500 can be connected to the intermediate substrate 700 or the cover body 800.

[0054] For example, the main plate assembly 400 is installed in the shell 100. When the cover body 800 and the intermediate substrate 700 are separated from each other, the main plate assembly 400 is connected to the inside of the cover body 800 or the corresponding position of the intermediate substrate 700 relative to the cover body 800. After the main plate assembly 400 is connected, the cover body 800 is connected to the intermediate substrate 700. At this time, the main plate assembly 400 is located in the chamber enclosed by the cover body 800 and the intermediate substrate 700.

[0055] In this embodiment, the shell 100 is provided as a split connection structure including the cover body 800 and the intermediate substrate 700, which facilitates the installation of the main plate assembly 400 and the slave plate assembly 500 in the chamber of the shell 100, can effectively reduce the assembly difficulty of the battery management device, improve the assembly efficiency, and help batch production.

[0056] For example, Figure 2In some embodiments, the two oppositely arranged plate surfaces of the intermediate substrate 700 are each formed with a protruding plate surface connecting frame 710, and the cover 800 is detachably sleeved on the corresponding connecting frame 710.

[0057] For example, the connecting frame 710 is a continuous frame structure with the first end connected to the second end, and the internal space enclosed by the connecting frame 710 is used to form a chamber.

[0058] For example, the connecting frame 710 can be detachably connected to the cover 800 by means of insertion, clamping or fasteners.

[0059] For example, the transverse (i.e., perpendicular to the Z direction) cross-sectional shape of the connecting frame 710 matches the transverse cross-sectional shape of the cover 800. Figure 2

[0060] The connecting frame 710 protruding from the plate surface (the partition plate 200) of the intermediate substrate 700 can serve as a connection basis between the cover 800 and the intermediate substrate 700, so that the cover 800 can be connected to the intermediate substrate 700 through the connecting frame 710.

[0061] At the same time, the cover 800 and the connecting frame 710 are designed to be detachably connected, so that when the main board assembly 400 or the slave board assembly 500 fails, the corresponding cover 800 can be directly removed, so that the failed main board assembly 400 or slave board assembly 500 is exposed, facilitating maintenance or replacement.

[0062] For example, Figure 2 In some embodiments, the connecting frame 710 is clamped with the cover 800.

[0063] For example, Figure 2 Since the cover 800 is sleeved on the connecting frame 710, the clamping protrusion 711 can be arranged on the outer side wall of the connecting frame 710, and the clamping hole 820 (or the clamping groove) matched with the clamping protrusion 711 can be arranged on the side wall of the cover 800. When the clamping protrusion 711 enters the clamping hole 820, the cover 800 and the connecting frame 710 can be connected. Similarly, the clamping protrusion 711 can be arranged on the inner side wall of the cover 800, and the clamping hole 820 matched with the clamping protrusion 711 can be arranged on the outer side wall of the connecting frame 710, so that the cover 800 and the connecting frame 710 can be connected.

[0064] ​The cover 800 is snap-fitted with the connecting frame 710, so that the cover 800 and the intermediate substrate 700 can be quickly disassembled, which helps to improve the assembly efficiency and maintenance efficiency of the battery management device. At the same time, since the cover 800 is sleeved on the connecting frame 710, the structure (such as the snap-fit protrusion 711) for realizing the snap-fitting can be arranged between the cover 800 and the connecting frame 710, without occupying the external space of the battery management device, so that the structure of the battery management device is more compact, and the space utilization and energy density of the battery pack using the battery management device of the embodiment can be improved.

[0065] Figure 4 The perspective view of the cover 800 connected with the main board assembly 400 or the slave board assembly 500 is shown as Figure 2 and Figure 4 In some embodiments, the main board assembly 400 and the slave board assembly 500 are connected in the corresponding cover 800, respectively.

[0066] For example, the main board assembly 400 and the slave board assembly 500 can be connected with the cover 800 through a bracket, a fastener or an adhesive layer.

[0067] For example, when one of the slave board assemblies 500 of the battery management device fails, since the slave board assembly 500 is connected in the cover 800, when the slave board assembly 500 with failure needs to be taken out from the battery management device, the cover 800 connected with the slave board assembly 500 with failure is separated from the intermediate substrate 700, so that the slave board assembly 500 with failure can be disassembled from the battery management device for maintenance. Since the intermediate substrate 700 does not need to be moved during the process of taking out the slave board assembly 500 with failure, the other normal main board assembly 400 and slave board assembly 500 in the battery management device can not be affected, which helps to simplify the maintenance process of the battery management device, and thus the maintenance efficiency can be effectively improved.

[0068] For example, the main board assembly 400 and the slave board assembly 500 are connected with the cover 800 through a bracket, a fastener or an adhesive layer. Figure 2 and Figure 4 In some embodiments, at least one of the main board assembly 400 and the slave board assembly 500 includes a carrier plate 410 connected with a device; the surface of the cover 800 facing the intermediate substrate 700 is provided with a connecting column assembly 810, and the carrier plate 410 is connected to the corresponding cover 800 through the connecting column assembly 810.

[0069] For example, the carrier plate 410 can be a rigid plate structure.

[0070] For example, the carrier plate 410 includes a PCB circuit board, and the device includes an electrical device electrically connected with the PCB circuit board.

[0071] Exemplarily, the bearing plate 410 and the connecting column assembly 810 can be connected through hot melt connection, fastener connection or clamping, etc.

[0072] Exemplarily, when the bearing plate 410 is a polygonal plate, the connecting column assembly 810 can be arranged corresponding to the top corner position and the center position of the bearing plate 410, so as to improve the connection reliability and stability between the bearing plate 410 and the connecting column assembly 810.

[0073] Exemplarily, the connecting column assembly 810 and the cover 800 can be fixedly connected through hot melt connection, riveting, bonding, one-piece forming connection or fastener connection, etc.

[0074] In the embodiment, the bearing plate 410 can at least play a role of positioning and supporting the device, and when the bearing plate 410 is connected with the cover 800, the device can be connected inside the cover 800 through the bearing plate 410, which helps to reduce the assembly difficulty of the battery management device, and thus can effectively improve the assembly efficiency and be helpful for batch production.

[0075] Figure 5 Exemplarily, the connecting column assembly 810 and the cover 800 can be fixedly connected through hot melt connection, riveting, bonding, one-piece forming connection or fastener connection, etc. Figure 2 Exemplarily, the connecting column assembly 810 and the cover 800 can be fixedly connected through hot melt connection, riveting, bonding, one-piece forming connection or fastener connection, etc. Figure 4 and Figure 5 In some embodiments, the connecting column assembly 810 includes an intermediate column body 811 which is hot melt connected with the bearing plate 410, and a support column body 812 which is arranged adjacent to the intermediate column body 811; the support column body 812 abuts against the plate surface of the bearing plate 410 close to the cover 800.

[0076] Exemplarily, each connecting column assembly 810 includes a plurality of support column bodies 812, and the plurality of support column bodies 812 can be uniformly arranged around the intermediate column body 811.

[0077] Exemplarily, the root of the support column body 812 is provided with a reinforcing rib 813, and the reinforcing rib 813 extends to the adjacent support column body 812 or extends to the intermediate column body 811.

[0078] Exemplarily, the intermediate column body 811 can include a larger-diameter supporting column segment 8111 and a smaller-diameter hot melt column segment 8112 which is arranged on the top of the supporting column segment 8111; the supporting column segment 8111 is used for supporting the bearing plate 410, and the hot melt column segment 8112 is used for hot melt connection with the bearing plate 410.

[0079] When the bearing plate 410 and the connecting column assembly 810 are connected, the top end of the intermediate column body 811 can pass through the bearing plate 410 through the via hole arranged on the bearing plate 410. Then, the part of the intermediate column body 811 passing through the bearing plate 410 is hot melt shaped, and after the hot melt part is cooled and shaped, the bearing plate 410 and the intermediate column body 811 can be connected.

[0080] Through the support of the support column 812 to the bearing plate 410, the bearing plate 410 and the surface of the cover 800 can be kept gap, which helps to prevent the device on the bearing plate 410 from interfering with the cover 800.

[0081] As Figure 4 In some embodiments, the device includes a terminal 420, and at least a through-avoiding opening 300 is provided on the cover 800, and the terminal 420 is exposed through the avoiding opening 300.

[0082] Exemplarily, the avoiding opening 300 can be provided on the side wall of the cover 800.

[0083] Exemplarily, Figure 6 Another structure of the intermediate substrate 700 is shown in the perspective view, as Figure 6 The connecting frame 710 is also provided with a through-avoiding opening 300.

[0084] The main plate assembly 400 or the slave plate assembly 500 can be electrically connected to the external circuit through the terminal 420. Since the main body of the terminal 420 is located in the cavity to be connected with other devices and the bearing plate 410 in the cavity, in order to expose the connecting end of the terminal 420, at least an avoiding opening 300 can be provided on the cover 800 to make the connecting end of the terminal 420 extend out of the cover 800 through the avoiding opening 300, thereby realizing electrical connection with the external circuit.

[0085] As Figure 1 And Figure 3 In some embodiments, the intermediate substrate 700 is provided with a plurality of through holes 720 penetrating in the direction perpendicular to the thickness direction of the partition plate 200 (perpendicular to the direction of the Z direction as Figure 3 The through hole 720 is configured as a flow channel 600.

[0086] After the cold air from the outside enters the flow channel 600 configured by the through hole 720, it can exchange heat with the main plate assembly 400 or the slave plate assembly 500 in the cavity through the partition plate 200, so as to reduce the temperature of the main plate assembly 400 or the slave plate assembly 500, and the air with the increased temperature is discharged along the flow channel 600, thereby realizing heat dissipation to the outside.

[0087] The flow channel 600 configured by the through hole 720 realizes air cooling and heat dissipation in the embodiment. On the one hand, the structure of the through hole 720 is relatively simple, which can reduce the molding difficulty of the intermediate substrate 700 and help to reduce the preparation cost of the battery management device. On the other hand, since there is flowing air in the battery pack, the battery management device utilizes the flowing air in the battery pack to realize air cooling and heat dissipation, without the need to increase additional pipelines and medium conveying devices, which helps to reduce the assembly difficulty and preparation cost of the battery pack.

[0088] As Figure 3 In some embodiments, the radial cross-sectional shape of the through hole 720 is rectangular, the dimension of the rectangular along the thickness direction of the partition plate 200 (such as the Z direction in Figure 3 In some embodiments, the radial cross-sectional shape of the through hole 720 is rectangular, the dimension of the rectangular along the thickness direction of the partition plate 200 (such as the Z direction in Figure 3 In some embodiments, the radial cross-sectional shape of the through hole 720 is rectangular, the dimension of the rectangular along the thickness direction of the partition plate 200 (such as the Z direction in

[0089] For example, H can be 5mm, 6mm, 7mm, 8mm, 9mm or 10mm.

[0090] For example, L can be 10mm, 11mm, 12mm, 13mm, 14mm or 15mm.

[0091] If L or H is too small, the cross-sectional area of the through hole 720 will be small, that is, the flow area of the flow channel 600 formed by the through hole 720 will be small, which will result in a small air flow through the flow channel 600, and the air cooling effect of the battery management device will be poor. If L or H is too large, the size of the middle substrate 700 must also be set larger, which will result in that the battery management device needs to occupy a larger space in the battery pack, and the space utilization and energy density in the battery pack will be low.

[0092] To avoid the above problems, in the present embodiment, H is limited to 5mm≤H≤10mm, and L is limited to 10mm≤L≤15mm, which can ensure that the battery management device occupies a smaller space, and at the same time, the air flow through the through hole 720 is large, so that the battery management device has a good air cooling effect.

[0093] Based on the same inventive concept, in combination with the description of the battery management device in the above various embodiments, the present embodiment provides a battery pack, which has the corresponding technical effects of the battery management device in the above various embodiments, which will not be described here.

[0094] A battery pack comprising the battery management device as described in the above various embodiments.

[0095] It should be noted that the above describes some embodiments of the present application. Other embodiments are within the scope of the appended claims.

[0096] Each of the embodiments in the present application is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be mutually referred to.

[0097] The description of the application is presented for purposes of illustration and description, and not by limitation. Numerous modifications and variations on the embodiments described herein will be apparent to those of ordinary skill in the art in light of the foregoing description. The embodiments described herein are chosen and described in order to best explain the principles of the application and its practical application to thereby enable others skilled in the art to best utilize the application. Various embodiments of the application are contemplated and can be made without departing from the spirit or scope of the application.

[0098] It should be understood that any of the above-described embodiments can be implemented in the form of control logic using hardware (e.g. an application specific integrated circuit or field programmable gate array) or a combination of hardware and software (e.g. software running on a processor or microprocessor). The software can be software stored in a computer readable storage medium such as RAM (random access memory) or ROM, for example, erasable programmable ROM, electrically erasable programmable ROM, flash memory or the like.

[0099] Although the application has been described in conjunction with specific embodiments thereof, numerous alternatives, modifications, and variations will be readily apparent to those of ordinary skill in the art. Such alternatives, modifications, and variations are intended to fall within the ambit of the present application.

[0100] It is intended that the application be construed as including all such alternatives, modifications and variations as fall within the scope of the present application. Accordingly, the application is not to be restricted except in accordance with the following claims.

Claims

1. A battery management device, characterized by, The battery management device comprises: a shell, a main plate assembly and a slave plate assembly; an internal space of the shell is provided with a partition plate, the partition plate is used to divide the internal space of the shell into at least two chambers, and the main plate assembly and the slave plate assembly are arranged in different chambers respectively.

2. The battery management device of claim 1, wherein, The partition plate is provided with a plurality of flow channels for flowing heat exchange medium.

3. The battery management device of claim 1, wherein, The shell comprises a middle base plate and two cover bodies, the two cover bodies are connected to opposite sides of the middle base plate respectively, each cover body and the middle base plate enclose the chamber, and a part of the middle base plate between the two chambers is configured as the partition plate.

4. The battery management device of claim 3, wherein, Opposite two plate surfaces of the middle base plate are each formed with a connecting frame of a convex plate surface, and the cover body is detachably sleeved in the corresponding connecting frame.

5. The battery management device of claim 4, wherein, The connecting frame and the cover body are snap-fitted.

6. The battery management device of claim 3, wherein, The main plate assembly and the slave plate assembly are connected to the corresponding cover bodies respectively.

7. The battery management apparatus according to claim 3, characterized by, At least one of the main plate assembly and the slave plate assembly comprises a carrier plate connected with a device, and the cover body is provided with a connecting column assembly close to the surface of the middle base plate, and the carrier plate is connected to the corresponding cover body through the connecting column assembly.

8. The battery management apparatus according to claim 7, characterized by, The connecting column assembly comprises an intermediate column body thermally connected with the carrier plate, and a support column body arranged adjacent to the intermediate column body; and the support column body abuts against the plate surface of the carrier plate close to the cover body.

9. The battery management apparatus according to claim 7, characterized by, The device comprises a terminal, and a through avoiding opening is arranged on at least the cover body, and the terminal is exposed through the avoiding opening.

10. The battery management device of claim 3, wherein, The partition plate is provided with a plurality of flow channels for flowing heat exchange medium. The middle base plate is provided with a plurality of through holes penetrating in a direction perpendicular to the thickness direction of the partition plate, and the through holes are configured as the flow channels.

11. The battery management apparatus according to claim 10, wherein A radial cross-sectional shape of the through hole is a rectangle, a dimension of the rectangle along the thickness direction of the partition plate is defined as a height of the rectangle, and a dimension of the rectangle perpendicular to the height is defined as a width of the rectangle; the height of the rectangle is 5mm to 10mm, and the width of the rectangle is 10mm to 15mm.

12. A battery pack, characterized by, The battery management device comprises: a shell, a main plate assembly and a slave plate assembly; an internal space of the shell is provided with a partition plate, the partition plate is used to divide the internal space of the shell into at least two chambers, and the main plate assembly and the slave plate assembly are arranged in different chambers respectively. The partition plate is provided with a plurality of flow channels for flowing heat exchange medium. The shell comprises a middle base plate and two cover bodies, the two cover bodies are connected to opposite sides of the middle base plate respectively, each cover body and the middle base plate enclose the chamber, and a part of the middle base plate between the two chambers is configured as the partition plate. Opposite two plate surfaces of the middle base plate are each formed with a connecting frame of a convex plate surface, and the cover body is detachably sleeved in the corresponding connecting frame. The connecting frame and the cover body are snap-fitted. The main plate assembly and the slave plate assembly are connected to the corresponding cover bodies respectively. At least one of the main plate assembly and the slave plate assembly comprises a carrier plate connected with a device, and the cover body is provided with a connecting column assembly close to the surface of the middle base plate, and the carrier plate is connected to the corresponding cover body through the connecting column assembly. The connecting column assembly comprises an intermediate column body thermally connected with the carrier plate, and a support column body arranged adjacent to the intermediate column body; and the support column body abuts against the plate surface of the carrier plate close to the cover body. The device comprises a terminal, and a through avoiding opening is arranged on at least the cover body, and the terminal is exposed through the avoiding opening. The partition plate is provided with a plurality of flow channels for flowing heat exchange medium. The middle base plate is provided with a plurality of through holes penetrating in a direction perpendicular to the thickness direction of the partition plate, and the through holes are configured as the flow channels. A radial cross-sectional shape of the through hole is a rectangle, a dimension of the rectangle along the thickness direction of the partition plate is defined as a height of the rectangle, and a dimension of the rectangle perpendicular to the height is defined as a width of the rectangle; the height of the rectangle is 5mm to 10mm, and the width of the rectangle is 10mm to 15mm.

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