Drive management structure of battery pack and battery pack

Abstract

The utility model relates to the technical field of battery packs, and discloses a driving management structure of a battery pack and the battery pack, which comprises a shell, a battery driving unit and a battery management system, a first accommodating cavity and a second accommodating cavity are formed in the shell; the battery driving unit comprises a fuse, a pre-charging resistor, a pre-charging relay, a main positive relay and a main negative relay; the fuse, the pre-charging resistor, the pre-charging relay, the quick-charging relay and the main negative relay are integrally arranged in the first accommodating cavity; according to the utility model, the battery driving unit and the battery management system which are originally dispersed are integrated into a compact integrated structure, so that the overall integration level of the system is greatly improved, the production cost and material consumption of structures such as a shell and the like are remarkably reduced, and the service life of the battery management system is prolonged. In addition, the manufacturing process and subsequent installation and maintenance steps are simplified, deployment can be completed quickly and efficiently, the working efficiency is further improved, and both economical efficiency and practicability are considered.

Description

Technical Field

[0001] This utility model relates to the field of battery pack technology, specifically to the drive management structure of a battery pack and the battery pack itself. Background Technology

[0002] In traditional battery pack designs, the battery drive unit (BDU) and battery management system (BMS) are arranged in a separate structure, each occupying different spaces and connected by additional connectors. This design not only results in inefficient use of the internal space of the battery pack, limiting its energy density and overall compactness, but also increases manufacturing costs and maintenance complexity due to the introduction of redundant components. Utility Model Content

[0003] In view of this, the present invention provides a drive management structure for a battery pack and a battery pack, in order to solve the problem that the separate structure layout of the battery drive unit and the battery management system results in inefficient use of the internal space of the battery pack, and increases manufacturing costs and maintenance complexity.

[0004] In a first aspect, this utility model provides a drive management structure for a battery pack, including a housing, a battery drive unit, and a battery management system; the housing has a first receiving cavity and a second receiving cavity inside; the battery drive unit includes a fuse, a pre-charge resistor, a pre-charge relay, a main positive relay, and a main negative relay, wherein the fuse, the pre-charge resistor, the pre-charge relay, the main positive relay, and the main negative relay are integrated and disposed in the first receiving cavity; the battery management system is disposed in the second receiving cavity and is electrically connected to the battery drive unit.

[0005] Beneficial effects: By setting a first and a second receiving cavity within the housing, and placing the battery drive unit in the first receiving cavity and the battery management system in the second receiving cavity, the battery drive unit and the battery management system can be separated from each other. This effectively isolates potential electromagnetic interference and thermal effects between the two, ensuring the stable operation of their respective functions. Furthermore, it integrates the originally dispersed battery drive unit and battery management system into a compact, integrated structure, greatly improving the overall integration of the system. This significantly reduces the production cost and material consumption of the housing and other structures, saves space within the battery pack, simplifies the manufacturing process and subsequent installation and maintenance steps, and enables rapid and efficient deployment, further improving work efficiency and balancing economy and practicality.

[0006] In one optional embodiment, the housing includes a support, an upper cover plate, and a lower cover plate; the support includes a first receiving groove and a second receiving groove, the first receiving groove and the second receiving groove being respectively disposed on both sides of the support; the upper cover plate is disposed on the side where the first receiving groove is located, and together with the first receiving groove, forms the first receiving cavity; the lower cover plate is disposed on the side where the second receiving groove is located, and together with the second receiving groove, forms the second receiving cavity.

[0007] Beneficial effects: By setting the first and second receiving slots on both sides of the support, independent and functionally distinct first and second receiving cavities are formed within the housing. This not only ensures that the components within the first and second receiving cavities do not interfere with each other, but also reserves sufficient space for the maintenance and upgrade of the battery drive unit and battery management system. This ensures both the compactness of the structure and the convenience of installation and maintenance of the battery drive unit and battery management system.

[0008] In one optional embodiment, the support includes a first base plate and a second base plate, which are arranged sequentially along a first direction of the housing; in a second direction of the housing, the first base plate and the second base plate are spaced apart and connected to the second base plate by a connecting plate; the lower cover plate is located on the same plane as the first base plate and is arranged opposite to the second base plate; the first direction and the second direction are perpendicular to each other.

[0009] Beneficial effects: By staggering the first and second base plates, the second receiving cavity can accommodate the battery management system, while the first receiving cavity has sufficient volume to accommodate the battery drive unit. This balances the space requirements of the two battery management systems and the battery drive unit, and maximizes the utilization of the internal space of the housing.

[0010] In one alternative embodiment, the upper cover is detachably connected to the first receiving groove.

[0011] Beneficial effects: By detachably connecting the upper cover plate to the first receiving slot, it is convenient to install and remove the upper cover plate from the first receiving slot, simplifying the installation and removal process of the battery drive unit and improving the installation and maintenance efficiency of the battery drive unit.

[0012] In one alternative embodiment, the lower cover is detachably connected to the second receiving groove.

[0013] Beneficial effects: By detachably connecting the lower cover plate to the second receiving slot, the installation and removal of the lower cover plate and the second receiving slot are facilitated, simplifying the installation and removal process of the battery management system and improving the installation and maintenance efficiency of the battery management system.

[0014] In one optional embodiment, a first through hole and a second through hole are sequentially spaced apart on the side wall of the housing; the battery driving unit further includes a first lead and a second lead; one end of the first lead is located outside the housing, and the other end passes through the first through hole and is connected to the positive terminal of the battery driving unit; the second lead is spaced apart from the first lead, one end is located outside the housing, and the other end passes through the second through hole and is connected to the negative terminal of the battery driving unit.

[0015] Beneficial effects: The ends of the first and second leads furthest from the battery drive unit are used to connect to the terminals of the total positive and negative output terminals of the battery in the battery pack. The ends of the first and second leads closest to the battery drive unit are directly connected to the positive or negative terminal of the battery drive unit. Compared with the traditional method of setting out terminal blocks at the total positive and negative output terminals of the battery pack, using terminal blocks to lead out the positive and negative terminals of the battery, and connecting the total positive and negative output terminals of the battery to the battery drive unit through intermediate connectors, this method eliminates the terminal blocks and intermediate connectors. This not only saves costs, simplifies the assembly process, and saves space, but also improves current transmission efficiency and stability, effectively reduces resistance and energy loss, and significantly improves the overall performance of the battery drive unit.

[0016] In one alternative embodiment, the battery drive unit further includes a flexible circuit board, through which the fuse, the precharge resistor, the precharge relay, the main positive relay, and the main negative relay are connected.

[0017] Beneficial effects: Connecting fuses, pre-charge resistors, pre-charge relays, main positive relays, and main negative relays via flexible circuit boards improves the overall reliability and stability of the system compared to traditional wiring harness connections. It also reduces the risk of failures caused by messy wiring harnesses, saves internal space in the housing, and reduces costs.

[0018] In one alternative embodiment, the flexible circuit board, the fuse, the precharge resistor, the precharge relay, the main positive relay, and the main negative relay are all welded together.

[0019] Beneficial effects: By welding the flexible circuit board, fuse, precharge resistor, precharge relay, main positive relay, and main negative relay together, not only is the stability and reliability of the electrical connection between the components ensured, but the risk of failure due to poor contact or looseness is also effectively reduced.

[0020] In an optional embodiment, a high-voltage control board is further included, which is disposed within the first accommodating cavity, and both the battery management system and the battery drive unit are connected to the high-voltage control board.

[0021] Beneficial effects: By setting up a high-voltage control board, key parameters such as voltage and current collected from the battery drive unit are transmitted to the battery management system for real-time monitoring, analysis and control, thereby ensuring the safety and efficiency of the battery pack.

[0022] In one alternative implementation, a shunt is provided on the high-voltage control board, the shunt being connected to the battery management system.

[0023] Beneficial effects: The shunt can accurately monitor the current value in the high-voltage circuit, ensuring that the battery pack and other high-voltage components operate within the normal operating range; when an abnormal current is detected, such as exceeding the set threshold, the shunt can transmit this information to the battery management system, triggering corresponding protection mechanisms, such as cutting off the power supply and reducing the output power, to prevent damage to the battery pack and other high-voltage components, thereby improving system safety and optimizing battery management.

[0024] Secondly, this utility model also provides a battery pack, including the aforementioned battery pack drive management structure.

[0025] Since the battery pack includes the aforementioned battery pack drive management structure, it has the same effect as the battery pack drive management structure, and will not be described in detail here. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this utility model, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is an exploded view of the drive management structure of the battery pack according to an embodiment of the present invention;

[0028] Figure 2 This is a side view of the drive management structure of the battery pack according to an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the support structure according to an embodiment of the present utility model;

[0030] Figure 4 This is a schematic diagram of the connection between the support and the upper cover plate in an embodiment of the present utility model;

[0031] Figure 5 This is a schematic diagram of the connection between the battery drive unit and the support in an embodiment of the present invention;

[0032] Figure 6This is a top view of the connection between the battery drive unit and the support in an embodiment of the present invention;

[0033] Figure 7 This is a schematic diagram of the connection between the battery drive unit and the high-voltage control board in an embodiment of the present invention.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Housing; 11. Support; 111. First receiving groove; 112. Second receiving groove; 113. First base plate; 114. Second base plate; 12. Upper cover plate; 13. Lower cover plate; 14. First through hole; 15. Second through hole; 2. Battery drive unit; 21. Fuse; 22. Precharge resistor; 23. Precharge relay; 24. Main positive relay; 25. Fast charge relay; 26. First lead; 27. Second lead; 28. Flexible circuit board; 29. ​​Main negative relay; 3. Battery management system; 4. High voltage control board; 41. Shunt. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0037] The following is combined with Figures 1 to 7 The following describes embodiments of the present invention.

[0038] According to an embodiment of the present invention, a drive management structure for a battery pack is provided, including a housing 1, a battery drive unit 2, and a battery management system 3; the housing 1 has a first receiving cavity and a second receiving cavity inside; the battery drive unit 2 includes a fuse 21, a pre-charge resistor 22, a pre-charge relay 23, a main positive relay 24, and a main negative relay 29, wherein the fuse 21, the pre-charge resistor 22, the pre-charge relay 23, the main positive relay 24, and the main negative relay 29 are integrated and disposed in the first receiving cavity; the battery management system 3 is disposed in the second receiving cavity and is electrically connected to the battery drive unit 2.

[0039] By setting a first receiving cavity and a second receiving cavity within the housing 1, and placing the battery drive unit 2 in the first receiving cavity and the battery management system 3 in the second receiving cavity, the battery drive unit 2 and the battery management system 3 can be separated from each other. This not only effectively isolates potential electromagnetic interference and thermal effects between the two, ensuring the stable operation of their respective functions, but also integrates the originally dispersed battery drive unit 2 and battery management system 3 into a compact integrated structure, greatly improving the overall integration of the system. This not only significantly reduces the production cost and material consumption of the housing 1 and other structures, saving space within the battery pack, but also simplifies the manufacturing process and subsequent installation and maintenance steps, enabling rapid and efficient deployment, further improving work efficiency, and balancing economy and practicality.

[0040] Specifically, the battery drive unit 2 may also include a fast charging relay 25.

[0041] Specifically, the battery drive unit 2 and the battery management system 3 are connected via a wiring harness. The battery management system 3 controls the pre-charge relay 23, the main positive relay 24, and the main negative relay 29 in the battery drive unit 2, thereby controlling the battery drive unit 2.

[0042] In one embodiment, the housing 1 includes a support 11, an upper cover plate 12, and a lower cover plate 13; the support 11 includes a first receiving groove 111 and a second receiving groove 112, the first receiving groove 111 and the second receiving groove 112 being respectively disposed on both sides of the support 11; the upper cover plate 12 is disposed on the side where the first receiving groove 111 is located, and together with the first receiving groove 111, forms the first receiving cavity; the lower cover plate 13 is disposed on the side where the second receiving groove 112 is located, and together with the second receiving groove 112, forms the second receiving cavity.

[0043] By setting the first receiving groove 111 and the second receiving groove 112 on both sides of the support 11, the housing 1 is divided into an independent and functionally distinct first receiving cavity and a second receiving cavity. This not only ensures that the components in the first receiving cavity and the second receiving cavity do not interfere with each other, but also reserves sufficient space for the maintenance and upgrading of the battery drive unit 2 and the battery management system 3. This ensures both the compactness of the structure and the convenience of installation and maintenance of the battery drive unit 2 and the battery management system 3.

[0044] In one embodiment of this invention, along the height direction of the housing 1 (i.e. Figure 1 In the second direction shown, the first receiving groove 111 and the second receiving groove 112 are respectively disposed on both sides of the support 11. In another embodiment of this invention, along the length direction of the housing 1 (i.e., Figure 1In the first direction shown, the first receiving groove 111 and the second receiving groove 112 are respectively disposed on both sides of the support 11. In another embodiment of this embodiment, the first receiving groove 111 and the second receiving groove 112 are respectively disposed on both sides of the support 11 along the width direction of the housing 1.

[0045] Specifically, support 11 is formed by injection molding.

[0046] In one embodiment, the support 11 includes a first base plate 113 and a second base plate 114, the first base plate 113 and the second base plate 114 being arranged sequentially along a first direction of the housing 1; in a second direction of the housing 1, the first base plate 113 and the second base plate 114 are spaced apart and connected to the second base plate 114 by a connecting plate; the lower cover plate 13 is located on the same plane as the first base plate 113 and is arranged opposite to the second base plate 114; the first direction and the second direction are perpendicular to each other.

[0047] By staggering the first base plate 113 and the second base plate 114, the first cavity has sufficient volume to accommodate the battery management system 3 while ensuring that the second cavity can accommodate the battery management system 3. This balances the space requirements of the two battery management systems 3 and the battery driving unit 2, and maximizes the utilization of the internal space of the housing 1.

[0048] In a specific implementation, the second base plate 114 is provided with a connecting hole to facilitate the connection between the battery management system 3 and the battery drive unit 2 via a wiring harness.

[0049] In one embodiment, the upper cover 12 is detachably connected to the first receiving groove 111.

[0050] By detachably connecting the upper cover plate 12 to the first receiving groove 111, the installation and removal of the upper cover plate 12 and the first receiving groove 111 are facilitated, simplifying the installation and removal process of the battery drive unit 2 and improving the installation and maintenance efficiency of the battery drive unit 2.

[0051] In a specific embodiment, the upper cover plate 12 is detachably connected to the first receiving groove 111 via a first buckle.

[0052] In one embodiment of this invention, both sides of the upper cover plate 12 are detachably connected to the first receiving groove 111 via first snap fasteners. In another embodiment, one end of the upper cover plate 12 may be hinged to the first receiving groove 111, and the other end may be detachably connected to the first receiving groove 111 via first snap fasteners.

[0053] In an alternative embodiment, the top cover 12 may also be detachably connected to the first receiving groove 111 by fasteners such as screws.

[0054] In one embodiment, the lower cover plate 13 is detachably connected to the second receiving groove 112.

[0055] By detachably connecting the lower cover plate 13 to the second receiving groove 112, the installation and removal of the lower cover plate 13 and the second receiving groove 112 are facilitated, simplifying the installation and removal process of the battery management system 3 and improving the installation and maintenance efficiency of the battery management system 3.

[0056] In a specific embodiment, the lower cover plate 13 is detachably connected to the second receiving groove 112 via a second snap fastener.

[0057] In one embodiment of this invention, both sides of the lower cover plate 13 are detachably connected to the second receiving groove 112 via second snap fasteners. In another embodiment, one end of the lower cover plate 13 may be hinged to the second receiving groove 112, and the other end may be detachably connected to the second receiving groove 112 via second snap fasteners.

[0058] In an alternative embodiment, the lower cover plate 13 may also be detachably connected to the second receiving groove 112 by fasteners such as screws.

[0059] In one embodiment, the sidewall of the housing 1 is provided with a first through hole 14 and a second through hole 15 at intervals; the battery driving unit 2 further includes a first lead 26 and a second lead 27; one end of the first lead 26 is located outside the housing 1, and the other end passes through the first through hole 14 and is connected to the positive terminal of the battery driving unit 2; the second lead 27 is spaced apart from the first lead 26, one end is located outside the housing 1, and the other end passes through the second through hole 15 and is connected to the negative terminal of the battery driving unit 2.

[0060] The ends of the first lead 26 and the second lead 27 furthest from the battery drive unit 2 are used to connect to the terminals of the total positive output terminal and the total negative output terminal of the battery in the battery pack. The ends of the first lead 26 and the second lead 27 close to the battery drive unit 2 are directly connected to the positive or negative terminal of the battery drive unit 2. Compared with the traditional method of setting out terminal blocks at the total positive output terminal and the total negative output terminal of the battery pack, using the terminal blocks to lead out the positive and negative terminals of the battery, and connecting the total positive output terminal and the total negative output terminal of the battery to the battery drive unit 2 through intermediate connectors, the terminal blocks and intermediate connectors are eliminated. This not only saves costs, simplifies the assembly process, and saves space, but also improves current transmission efficiency and stability, effectively reduces resistance and energy loss, and significantly improves the overall performance of the battery drive unit 2.

[0061] In a specific implementation, the first lead 26 is connected to the positive terminal of the battery drive unit 2 via fasteners such as bolts to form the main positive output terminal of the battery pack.

[0062] Specifically, the first lead-out electrode 26 can be a copper busbar, aluminum busbar, or other connecting busbar.

[0063] In a specific implementation, the second lead 27 is connected to the negative terminal of the battery drive unit 2 via fasteners such as bolts to form the main negative output terminal of the battery pack.

[0064] Specifically, the second lead 27 can be a copper busbar, aluminum busbar, or other connecting busbar.

[0065] In one embodiment, the battery drive unit 2 further includes a flexible circuit board 28, through which the fuse 21, the pre-charge resistor 22, the pre-charge relay 23, the main positive relay 24, and the main negative relay 29 are connected.

[0066] By connecting the fuse 21, pre-charge resistor 22, pre-charge relay 23, main positive relay 24 and main negative relay 29 via flexible circuit board 28, the overall reliability and stability of the system are improved compared with the traditional wiring harness connection method. The risk of failure caused by messy wiring harness is reduced, the internal space of the housing 1 can be better saved, and the cost is reduced.

[0067] In one embodiment, the flexible circuit board 28, the fuse 21, the precharge resistor 22, the precharge relay 23, the main positive relay 24, and the main negative relay 29 are all welded together.

[0068] By welding the flexible circuit board 28, fuse 21, pre-charge resistor 22, pre-charge relay 23, main positive relay 24, and main negative relay 29 together, not only is the stability and reliability of the electrical connection between the components ensured, but the risk of failure due to poor contact or looseness is also effectively reduced.

[0069] In one embodiment, a high-voltage control board 4 is also included, which is disposed in the first accommodating cavity, and the battery management system 3 and the battery drive unit 2 are both connected to the high-voltage control board 4.

[0070] By setting up a high-voltage control board 4, the key parameters such as voltage and current collected in the battery drive unit 2 are transmitted to the battery management system 3 for real-time monitoring, analysis and control, thereby ensuring the safety and efficiency of the battery pack.

[0071] In one embodiment, the high-voltage control board 4 is welded to the flexible circuit board 28.

[0072] By welding the high-voltage control board 4 and the flexible circuit board 28 together, not only is the stability and reliability of the electrical connection between the high-voltage control board 4 and the flexible circuit board 28 ensured, but the risk of failure due to poor contact or loosening is also effectively reduced.

[0073] In a specific implementation, the nickel strip in the flexible circuit board 28 is connected to electronic components such as the fuse 21, the pre-charge resistor 22, the pre-charge relay 23, the main positive relay 24, and the main negative relay 29, and then the flexible circuit board 28 is welded to the high-voltage control board 4.

[0074] In a specific implementation, the flexible circuit board 28 on the battery drive unit 2 is used to collect the high voltage signal of the battery drive unit 2 and then integrate the high voltage signal onto the high voltage control board 4.

[0075] In a specific implementation, the high-voltage control board 4 is also equipped with a shunt 41. The shunt 41 can accurately monitor the current value in the high-voltage circuit to ensure that the battery pack and other high-voltage components operate within the normal operating range. When an abnormal current is detected, such as exceeding a set threshold, the shunt 41 can transmit this information to the battery management system 3 to trigger the corresponding protection mechanism, such as cutting off the power supply or reducing the output power, to prevent damage to the battery pack and other high-voltage components, thereby improving system safety and optimizing battery management.

[0076] Specifically, the shunt 41 body is installed in the high voltage control board 4 and connected to the main board of the battery management system 3 via a wiring harness.

[0077] According to an embodiment of the present invention, another aspect provides a battery pack including the aforementioned battery pack drive management structure.

[0078] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A drive management structure for a battery pack, characterized in that, include: The housing (1) has a first receiving cavity and a second receiving cavity inside; The battery drive unit (2) includes a fuse (21), a pre-charge resistor (22), a pre-charge relay (23), a main positive relay (24), and a main negative relay (29). The fuse (21), the pre-charge resistor (22), the pre-charge relay (23), the main positive relay (24), and the main negative relay (29) are integrated in the first receiving cavity. The battery management system (3) is disposed in the second accommodating cavity and is electrically connected to the battery drive unit (2).

2. The drive management structure of the battery pack according to claim 1, characterized in that, The housing (1) includes: The support (11) includes a first receiving groove (111) and a second receiving groove (112), the first receiving groove (111) and the second receiving groove (112) being respectively disposed on both sides of the support (11); The upper cover plate (12) is disposed on the side where the first receiving groove (111) is located, and together with the first receiving groove (111) forms the first receiving cavity; The lower cover plate (13) is located on the side where the second receiving groove (112) is located, and together with the second receiving groove (112) forms the second receiving cavity.

3. The battery pack drive management structure according to claim 2, characterized in that, The support (11) includes a first base plate (113) and a second base plate (114), the first base plate (113) and the second base plate (114) are arranged sequentially along a first direction of the housing (1); in a second direction of the housing (1), the first base plate (113) and the second base plate (114) are spaced apart and connected to the second base plate (114) by a connecting plate; the lower cover plate (13) is located on the same plane as the first base plate (113) and is arranged opposite to the second base plate (114); the first direction and the second direction are perpendicular to each other.

4. The battery pack drive management structure according to claim 2, characterized in that, The upper cover plate (12) is detachably connected to the first receiving groove (111); And / or, the lower cover plate (13) is detachably connected to the second receiving groove (112).

5. The drive management structure of the battery pack according to any one of claims 1 to 4, characterized in that, The side wall of the housing (1) is provided with a first through hole (14) and a second through hole (15) at intervals; the battery drive unit (2) further includes: The first lead-out electrode (26) has one end located outside the housing (1) and the other end passing through the first through hole (14) and connected to the positive electrode of the battery drive unit (2). The second lead (27) is spaced apart from the first lead (26), with one end located outside the housing (1) and the other end passing through the second through hole (15) and connected to the negative terminal of the battery drive unit (2).

6. The drive management structure of the battery pack according to any one of claims 1 to 4, characterized in that, The battery drive unit (2) also includes a flexible circuit board (28), and the fuse (21), the pre-charge resistor (22), the pre-charge relay (23), the main positive relay (24) and the main negative relay (29) are connected through the flexible circuit board (28).

7. The battery pack drive management structure according to claim 6, characterized in that, The flexible circuit board (28), the fuse (21), the precharge resistor (22), the precharge relay (23), the main positive relay (24), and the main negative relay (29) are all welded together.

8. The battery pack drive management structure according to claim 6, characterized in that, It also includes a high-voltage control board (4), which is disposed in the first accommodating cavity. The battery management system (3) and the battery drive unit (2) are both connected to the high-voltage control board (4).

9. The drive management structure for the battery pack according to claim 8, characterized in that, The high-voltage control board (4) is equipped with a shunt (41), which is connected to the battery management system (3).

10. A battery pack, characterized in that, The drive management structure includes the battery pack according to any one of claims 1 to 9.

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