Upper cover and battery box with same

Abstract

The utility model provides an upper cover and a battery box body with the same, the upper cover is buckled on a lower box body with a top opening, the upper cover comprises a plate-shaped cover body, the upper cover further comprises at least one pair of clamping arms, each clamping arm is arranged on the bottom surface of the cover body facing the lower box body, and the clamping arms are arranged on the bottom surface of the cover body facing the lower box body. The upper box body and the lower box body extend downwards to two opposite sides of the module contained in the lower box body; the driving connection mechanism is arranged on the cover body and is in driving connection with the clamping arms; and the pair of clamping arms can be close to or far away from each other under the driving of the driving connecting mechanism. The utility model has the effects of being suitable for new energy battery packs of different models, facilitating the installation of the new energy battery packs of different models, and reducing the manufacturing cost and complexity.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, in particular to an upper cover and a battery box having the same. Background Art

[0002] With the rise of great changes in the contemporary automobile industry, major automobile manufacturers have shifted their focus to new energy vehicles. Pure electric vehicles, as new energy vehicles, are increasingly favored by all sectors of society. In new energy electric vehicles, new energy batteries are key components that determine the endurance and safety of electric vehicles, and are the key constraints for electric vehicles to gain market recognition and customer trust.

[0003] In the related art, different car models are equipped with different types of new energy batteries, and the existing new energy battery pack installation method is relatively fixed, which is difficult to adapt to new energy battery packs of different sizes, so the installation structure needs to be redesigned, which increases manufacturing costs and complexity. Utility Model Content

[0004] In view of this, the utility model aims to propose an upper cover and a battery box having the same, which is suitable for different types of new energy battery packs and is convenient for installing different types of new energy battery packs to reduce manufacturing costs and complexity.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] An upper cover is buckled on a lower box body with an open top, comprising a plate-shaped cover body, and the upper cover also includes:

[0007] At least one pair of clamping arms, each of which is disposed on the bottom surface of the cover body facing the lower box body and extends downward to two opposite sides of the module accommodated in the lower box body;

[0008] The driving connection mechanism is arranged on the cover body and is drivingly connected to the clamping arms; due to the driving of the driving connection mechanism, the pair of clamping arms can be moved closer to or farther away from each other.

[0009] Furthermore, a guide device is fixedly provided on the bottom surface of the cover body, and a pair of clamping arms are slidably fitted on the guide device.

[0010] Furthermore, an air outlet is transparently provided on the cover body, and an air blowing device is retained in the air outlet to guide the airflow below the cover body to the top of the cover body through the air outlet;

[0011] A dustproof net is embedded in the air outlet.

[0012] Furthermore, the drive connection mechanism includes:

[0013] A power device, fixedly held on the cover body, to output rotational power;

[0014] The connecting rod structure is hinged to the pair of clamping arms; the connecting rod structure receives the rotational power output by the power device, thereby pushing and pulling the pair of clamping arms away from or close to each other.

[0015] Further, the clamping arms are constructed into at least two pairs;

[0016] A synchronization mechanism is connected to the power output end of the power device to synchronously transmit the rotational power output by the power device to the connecting rod structures matching each pair of the clamping arms.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] The upper cover described in the utility model is provided with a cover body that is buckled on the lower box body, and a clamping arm and a driving connection mechanism that drives a pair of clamping arms to move closer to or away from each other are provided on the side of the cover body close to the lower box body; the battery pack is installed in the lower box body after being connected to the upper cover; when the battery packs are of different models, the driving connection mechanism adapts the upper cover to battery packs of different models by adjusting the distance between the same pair of clamping arms; there is no need to design different installation structures according to different models of battery packs, which achieves the effect of facilitating the installation of battery packs of different models to reduce manufacturing costs and complexity.

[0019] Secondly, by arranging a guide device on the bottom surface of the cover body, the sliding trajectory of the clamping arms is limited to be consistent when the distance between the same pair of clamping arms is adjusted; the same pair of two clamping arms are still in a facing state after being driven by the driving connection mechanism, so as to better clamp and fix the battery pack.

[0020] In addition, by opening an air outlet on the cover body and arranging a blowing device at the air outlet, the air flow below the cover body can flow to the top of the cover body through the air outlet, thereby achieving heat dissipation for the battery pack connected under the cover body; at the same time, a dustproof net is set at the air outlet to block external impurities.

[0021] By setting a power device that outputs rotational power and cooperating with a connecting rod structure, a pair of clamping arms can be pushed and pulled away from or closer to each other, thereby achieving synchronous movement of the two clamping arms in the same group, clamping the battery pack in the center position of the two clamping arms, and reducing the possibility of displacement of the battery pack after being fixed.

[0022] Two pairs of clamping arms are provided to achieve multi-point fixation of the battery pack along the length direction of the battery pack, thereby improving the stability of the battery pack after fixation; at the same time, by setting a synchronization mechanism, the two pairs of clamping arms can clamp the battery pack at the same time, thereby improving the synchronization of the two groups of clamping arms. At the same time, the setting of the synchronization mechanism reduces the setting of the power source.

[0023] The utility model also provides a battery box, comprising a lower box with an open top, wherein the upper cover as described above is buckled on the open top of the lower box.

[0024] Furthermore, two oppositely disposed side panels constituting the lower box body are respectively provided with ventilation holes, and a heat conducting part adjacent to the module and fixedly connected to the lower box body is provided on the flow path of the airflow introduced through the ventilation holes.

[0025] Furthermore, a plurality of heat conducting plates are fixedly provided on the outside of the lower box body, and the heat conducting plates are arranged at intervals along the height direction of the lower box body.

[0026] Furthermore, the bottom plate of the lower box body is constructed with a circuitously arranged cooling channel, and the cooling channel is covered with a cooling fin that follows the shape of the cooling channel; a water storage device and a pumping device that is controllably connected to the water storage device are fixed to the outside of the lower box body, and a liquid circulation loop is provided between the pumping device and the cooling channel.

[0027] Furthermore, the liquid circulation loop includes a liquid inlet pipe connected between the liquid outlet of the pumping device and the liquid inlet of the cooling channel, and a liquid return pipe connected between the liquid outlet of the cooling channel and the liquid inlet of the pumping device.

[0028] The battery box described in the utility model is equipped with the above-mentioned upper cover, which is convenient for installing and fixing the battery pack; the ventilation holes on the opposite side panels of the lower box cooperate with the air outlets on the cover body to achieve the exchange of gas in the lower box with external gas, which is convenient for heat dissipation of the battery pack in the box.

[0029] Secondly, by fixing a heat conducting sheet outside the lower box body, the heat dissipation area of ​​the lower box body is increased, thereby improving the heat dissipation performance of the lower box body.

[0030] In addition, cooling channels, cooling fins, water storage devices and pumping devices are provided to dissipate heat from the battery pack in the box. Compared with air heat transfer, the establishment of a liquid circulation loop has a higher heat dissipation efficiency. Water cooling can quickly conduct heat to the cooling channel, and then transfer it to the water storage device through the cooling channel and pumping device. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0032] Figure 1 This is a schematic diagram of the structure of the display upper cover connected to the battery pack according to an embodiment of the utility model;

[0033] Figure 2 This is a schematic diagram showing some parts of the guiding device according to an embodiment of the utility model;

[0034] Figure 3 This is a schematic diagram showing some parts of the connecting rod structure according to the embodiment of the utility model;

[0035] Figure 4 This is a schematic diagram showing some parts of a power device according to an embodiment of the utility model;

[0036] Figure 5 This is a schematic diagram showing some parts of the synchronization mechanism according to the embodiment of the utility model;

[0037] Figure 6 The embodiment of the utility model is an exploded view showing the cooling channel;

[0038] Figure 7 The embodiment of the utility model is a cross-sectional view showing a check valve;

[0039] Figure 8 The present invention is a schematic diagram showing some parts of a heat conduction sheet.

[0040] Description of reference numerals: 1. clamping arm;

[0041] 2. Driving connection mechanism;

[0042] 201, power device; 202, connecting rod structure; 2021, rotating rod; 2022, transmission rod; 2023, first connecting rod;

[0043] 3. Cover body;

[0044] 301, air outlet; 302, air blowing device; 303, dust screen; 304, handle;

[0045] 4. Guide device;

[0046] 401, guide rail; 402, slider; 403, guide groove; 404, guide rod;

[0047] 5. Synchronous mechanism;

[0048] 501, synchronous sprocket; 502, synchronous chain;

[0049] 6. Lower box;

[0050] 601, vent; 602, heat conducting part; 6021, high thermal conductivity metal; 6022, heat conducting sheet; 603, heat conducting sheet; 604, cooling channel; 605, cooling sheet; 606, fixing ear plate;

[0051] 7. Water storage device;

[0052] 8. Pumping device;

[0053] 801, check valve;

[0054] 9. Liquid circulation loop;

[0055] 901, liquid inlet pipe; 902, liquid return pipe. DETAILED DESCRIPTION

[0056] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0057] In the description of the present invention, it should be noted that if there are terms such as "upper", "lower", "inner", "outer" and the like indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if there are terms such as "first" and "second", they are also used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0058] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection" and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0059] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0060] Embodiment 1

[0061] The present embodiment relates to a top cover which is applicable to different types of new energy battery packs to facilitate the installation of different types of new energy battery packs, thereby reducing manufacturing costs and complexity.

[0062] In terms of overall structure, the upper cover is buckled on the lower box body 6 with an open top, and includes a plate-shaped cover body 3. The upper cover also includes: at least one pair of clamping arms 1, each clamping arm 1 is arranged on the bottom surface of the cover body 3 facing the lower box body 6, and extends downward to two opposite sides of the module accommodated in the lower box body 6; a driving connection mechanism 2 is arranged on the cover body 3 and is drivingly connected to the clamping arms 1; due to the drive of the driving connection mechanism 2, the pair of clamping arms 1 can be close to or away from each other.

[0063] As configured above, the upper cover of this embodiment is provided with a cover body 3 which is buckled on the lower box body 6, and a clamping arm 1 and a driving connection mechanism 2 which drives a pair of clamping arms 1 to move closer to or away from each other are provided on the side of the cover body 3 close to the lower box body 6; the battery pack is installed in the lower box body 6 after being connected to the upper cover; when the battery packs are of different models, the driving connection mechanism 2 adapts the upper cover to battery packs of different models by adjusting the distance between the two clamping arms 1 of the same pair; there is no need to design different installation structures according to different models of battery packs, thereby facilitating the installation of battery packs of different models to reduce manufacturing costs and complexity.

[0064] Based on the above overall introduction, in this embodiment, the upper cover, such as Figures 1 to 4 As shown, the cover 3 is a rectangular plate-like structure, and at least one pair of clamping arms 1 is provided, which are provided below the cover 3. If two or more pairs of clamping arms 1 are provided, the clamping arms 1 are distributed along the length direction of the cover 3, and the distribution direction of the clamping arms 1 is the same as the length direction of the battery pack; the clamping arms 1 are rectangular columnar structures, and the two opposite faces of the two clamping arms 1 in the same group are planes and parallel to each other, and the battery pack is clamped between the same pair of two clamping arms 1. A handle 304 is also provided on the cover 3 for easy access to the cover 3. The handle 304 is provided to facilitate the staff to lift the cover 3 when assembling the cover 3 with the battery pack.

[0065] In order to improve the stability of the same pair of clamping arms 1 when they are close to or away from each other, a guide device 4 is fixedly provided on the bottom surface of the cover body 3, and a pair of clamping arms 1 are slidably fitted on the guide device 4. The guide device 4 includes a guide rail 401 and a slider 402. The length direction of the guide rail 401 is the same as the width direction of the cover body 3. The guide rails 401 of multiple groups of guide devices 4 are parallel to each other. Guide grooves 403 are provided on the guide rails 401 so that the guide rails 401 form guide rods 404 along their length direction. The sliders 402 are hooked on the guide rods 404 and slide along the length direction of the guide rods 404. The guide grooves 403 on the same guide rail 401 are opened from both ends of the guide rail 401 in the length direction to the center, and the guide grooves 403 on the same guide rail 401 are not connected. The clamping arm 1 is fixedly connected to the side of the slider 402 away from the cover body 3.

[0066] By arranging a guide device 4 on the bottom surface of the cover body 3, it is achieved that when the distance between the same pair of clamping arms 1 is adjusted, the sliding trajectory of the clamping arms 1 is limited to be consistent; the same pair of two clamping arms 1 are still in a facing state after being driven by the driving connection mechanism 2, so as to achieve better clamping and fixing of the battery pack.

[0067] In order to make the container equipped with the cover 3 have good heat dissipation ability, Figures 1 to 4As shown, an air outlet 301 is transparently provided on the cover body 3, and a blower device 302 is retained in the air outlet 301 to guide the airflow below the cover body 3 to the top of the cover body 3 through the air outlet 301; a dustproof net 303 is embedded in the air outlet 301. As an implementable embodiment, in this embodiment, there are two air outlets 301, and the two air outlets 301 are distributed along the length direction of the cover body 3; the dustproof net 303 is located above the blower device 302; the blower device 302 can promote the gas below the cover body 3 to flow to the top of the cover body 3 through the air outlet 301, for example, a fan is selected. By opening an air outlet 301 on the cover body 3 and arranging a blowing device 302 at the air outlet 301, the air flow below the cover body 3 flows through the air outlet 301 to the top of the cover body 3, thereby achieving heat dissipation for the battery pack connected under the cover body 3; at the same time, a dustproof net 303 is set at the air outlet 301 to block external impurities.

[0068] In order to make the battery pack located in the middle of the same pair of clamping arms 1 after clamping, the fixed battery pack is arranged in the center relative to the cover body 3, such as Figures 2 to 4 As shown, the driving connection mechanism 2 includes a power device 201 and a connecting rod structure 202. The power device 201 is fixed on the cover body 3 to output rotational power; the connecting rod structure 202 is hinged to a pair of clamping arms 1; the connecting rod structure 202 receives the rotational power output by the power device 201, and pushes and pulls the pair of clamping arms 1 away from or closer to each other.

[0069] The connecting rod structure 202 includes a rotating rod 2021, a transmission rod 2022 and a first connecting rod 2023. The end of the rotating rod 2021 passes through the cover body 3 and the guide rail 401 in sequence from the upper surface of the cover body 3 and is rotatably connected thereto. The transmission rod 2022 is vertically fixedly connected to the end of the rotating rod 2021, and the trajectory formed by the rotation of the transmission rod 2022 is parallel to the cover body 3, and the transmission rod 2022 is located on the extension line of the two guide grooves 403. A set of driving connection mechanisms 2 has a set of connecting rod structures 202, and a set of connecting rod structures 202 includes two first connecting rods 2023, one end of the two first connecting rods 2023 is rotatably connected to the two ends of the transmission rod 2022, and the remaining ends of the two first connecting rods 2023 are rotatably connected to the sliders 402 connected to the two clamping arms 1 of the same set. Specifically, the rotation axis of the first connecting rod 2023 and the transmission rod 2022 and the rotation axis of the slider 402 are perpendicular to the cover body 3. The power device 201 is fixed to the upper surface of the cover body 3. In this embodiment, the power device 201 is located above the cover body 3. In this embodiment, the power device 201 is a motor, and the output shaft of the motor is coaxially fixedly connected to the head end of the rotating rod 2021.

[0070] When in use, the motor is started, and the output shaft of the motor drives the rotating rod 2021 to rotate, thereby driving the transmission rod 2022 to rotate with the length center line of the rotating rod 2021 as the rotation axis. Since the two ends of the first connecting rod 2023 are respectively connected to the slider 402 and the transmission rod 2022 for rotation, the two clamping arms 1 in the same group are driven to move closer to or farther from each other. By setting a power device 201 that outputs rotating power and cooperating with the connecting rod structure 202 to push and pull a pair of clamping arms 1 away from or closer to each other, the synchronous movement of the two clamping arms 1 in the same group is achieved, and the battery pack is clamped in the center position of the two clamping arms 1, reducing the possibility of displacement of the fixed battery pack.

[0071] In order to improve the clamping stability of the battery pack, such as Figures 2 to 4 As shown, the clamping arms 1 are constructed into at least two pairs; a synchronization mechanism 5 is connected to the power output end of the power device 201 to synchronously transmit the rotational power output by the power device 201 to the connecting rod structure 202 matching each pair of clamping arms 1. As an implementable method, two pairs of clamping arms 1 are provided in this embodiment, and the two pairs of clamping arms 1 are distributed along the length direction of the cover body 3 and are located at both ends of the length direction of the cover body 3. Two pairs of clamping arms 1 are provided to achieve multi-point fixation of the battery pack along the length direction of the battery pack, thereby improving the stability of the battery pack after fixation; at the same time, by setting the synchronization mechanism 5, the two pairs of clamping arms 1 can clamp the battery pack at the same time, thereby improving the synchronization of the two groups of clamping arms 1. At the same time, the setting of the synchronization mechanism 5 reduces the setting of the power source and reduces energy consumption.

[0072] Based on the purpose of synchronously controlling the two pairs of clamping arms 1, in order to improve the transmission stability of the two sets of connecting rod structures 202, the synchronization mechanism 5 includes a synchronous sprocket 501 and a synchronous chain 502. Two synchronous sprockets 501 are provided, and the two synchronous sprockets 501 are respectively coaxially sleeved on the circumferential outer walls of the two rotating rods 2021 and fixedly connected to the rotating rods 2021. The synchronous chain 502 meshes and connects the two synchronous sprockets 501. As an optional embodiment, the synchronous sprocket 501 and the synchronous chain 502 can be replaced by a pulley and a belt, and it is only necessary to achieve synchronous control of the two pairs of clamping arms 1.

[0073] When the upper cover of this embodiment is in use, the power device 201 is started, and under the transmission action of the synchronous sprocket 501 and the synchronous chain 502, the two rotating rods 2021 rotate synchronously, and the rotation of the rotating rod 2021 drives the transmission rod 2022 to rotate with the center line of the length direction of the rotating rod 2021 as the rotation axis, thereby driving the first connecting rod 2023 to rotate, and under the limiting action of the guide rail 401, the two clamping arms 1 in the same group move to the side away from each other until the distance between the clamping arms 1 in the same group is greater than the width of the battery pack, and then the shell is placed above the battery pack, and the power device 201 is started. The power device 201 drives the rotating rod 2021 to rotate in the opposite direction, so that the clamping arm 1 clamps the battery pack.

[0074] After the battery pack is fixed and clamped, the blowing device 302 is started, and the blowing device 302 transmits the gas below the cover 3 to the top of the cover 3 through the air outlet 301. This process improves the circulation rate of the gas around the battery pack and accelerates the heat dissipation of the battery pack.

[0075] By setting a cover body 3 that is buckled on the lower box body 6, and setting a clamping arm 1 and a driving connection mechanism 2 that drives a pair of clamping arms 1 to move closer to or away from each other on the side of the cover body 3 close to the lower box body 6; the battery pack is installed in the lower box body 6 after being connected to the upper cover; when the battery packs are of different models, the driving connection mechanism 2 adapts the upper cover to battery packs of different models by adjusting the distance between the same pair of clamping arms 1; there is no need to design different installation structures according to different models of battery packs, which facilitates the installation of battery packs of different models to reduce manufacturing costs and complexity.

[0076] Embodiment 2

[0077] This embodiment relates to a battery box, such as Figures 4 to 8 As shown, it includes a lower box body 6 with an open top, and the upper cover as above is fastened to the open top of the lower box body 6; as set as above, by assembling the upper cover, it is convenient to install and fix the battery pack; by opening ventilation holes 601 on the opposite side panels of the lower box body 6, cooperating with the air outlets 301 on the cover body 3, the exchange of gas in the lower box body 6 and external air is realized, which is convenient for heat dissipation of the battery pack in the box.

[0078] The lower box body 6 is also connected with a fixing ear plate 606 for facilitating the connection between the box body and the vehicle. The ear plate is a plate-like structure with a through hole.

[0079] In order to facilitate the gas in the lower box 6 to be discharged from the air outlet 301, the gas in the space enclosed by the upper cover and the lower box 6 can flow to achieve heat dissipation of the battery pack; Figures 4 to 8 As shown, two oppositely disposed side panels constituting the lower box body 6 are respectively provided with ventilation holes 601 , and a heat conducting part 602 adjacent to the module and fixedly connected to the lower box body 6 is provided on the flow path of the airflow introduced through the ventilation holes 601 .

[0080] The heat conducting part 602 includes a high heat conducting metal 6021 and a heat conducting sheet 6022. The high heat conducting metal 6021 is fixedly connected in the vent 601 and distributed along the length direction of the lower box 6. The heat conducting sheet 6022 is fixedly connected to one side of the high heat conducting metal 6021 close to the inside of the lower box 6. By fixing the heat conducting sheet 603 outside the lower box 6, the heat dissipation area of ​​the lower box 6 is increased, thereby improving the heat dissipation performance of the lower box 6.

[0081] In order to improve the heat dissipation performance of the lower box 6, a plurality of heat conducting sheets 603 are fixedly provided on the outside of the lower box 6, and the heat conducting sheets 603 are arranged at intervals along the height direction of the lower box 6. The heat conducting sheets 603 are fixedly connected to the lower box 6, which increases the heat dissipation area of ​​the lower box 6, improves the heat dissipation efficiency, and further improves the heat dissipation rate of the battery pack in the box.

[0082] In order to enhance the heat dissipation performance of the box, Figures 4 to 8 As shown, the bottom plate of the lower box body 6 is constructed with a circuitously arranged cooling channel 604, and the cooling channel 604 is covered with a cooling fin 605 conforming to the cooling channel 604; a water storage device 7 and a pumping device 8 controllably connected to the water storage device 7 are fixed to the outside of the lower box body 6, and a liquid circulation loop 9 is provided between the pumping device 8 and the cooling channel 604.

[0083] The water storage device 7 is fixedly connected to the side wall of the lower box body 6 which is not connected to the heat conducting plate 603 and has no ventilation holes; the water storage device 7 is a water tank with a water injection hole and can withstand pressure, and the pumping device 8 is a circulating water pump. The water inlet pipeline and the water return pipeline connected between the pumping device 8 and the water storage device 7 are both connected to a check valve 801. The liquid circulation loop 9 includes a liquid inlet pipe 901 connected between the liquid outlet of the pumping device 8 and the liquid inlet of the cooling channel 604, and a liquid return pipe 902 connected between the liquid outlet of the cooling channel 604 and the liquid inlet of the pumping device 8.

[0084] The cooling channel 604, cooling fins 605, water storage device 7 and pumping device 8 are provided to dissipate heat from the battery pack in the box. The establishment of the liquid circulation loop 9 has a higher heat dissipation efficiency than air heat transfer. Water cooling can quickly conduct heat to the cooling channel 604, and then transfer it to the water storage device 7 through the cooling channel 604 and the pumping device 8.

[0085] When the battery box of this embodiment is used, the pumping device 8 is started, and the pumping device 8 pumps the liquid cooling medium in the water storage device 7 from the liquid inlet pipe 901 to the cooling channel 604 through the pipeline. After the heat generated by the battery pack is heat-exchanged with the cooling medium in the cooling channel 604, the cooling medium after absorbing heat flows back to the water storage device 7 from the liquid return pipe 902 under the action of the pumping device 8, forming a complete cooling liquid circulation loop. The air blowing device 302 is started, and the outside air flows into the battery box from the vent 601 and flows out from the air outlet 301, which increases the gas circulation rate in the box and improves the heat dissipation efficiency of the battery pack.

[0086] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An upper cover, which is buckled on a lower box body with an open top, comprises a plate-shaped cover body, characterized in that: The upper cover also includes: At least one pair of clamping arms, each of which is disposed on the bottom surface of the cover body facing the lower box body and extends downward to two opposite sides of the module accommodated in the lower box body; The driving connection mechanism is arranged on the cover body and is drivingly connected to the clamping arms; due to the driving of the driving connection mechanism, the pair of clamping arms can be moved closer to or farther away from each other.

2. The upper cover according to claim 1, characterized in that: A guide device is fixedly provided on the bottom surface of the cover body, and a pair of clamping arms are slidably matched on the guide device.

3. The upper cover according to claim 1, characterized in that: An air outlet is transparently provided on the cover body, and a blower device is retained in the air outlet to guide the airflow below the cover body to the top of the cover body through the air outlet; A dustproof net is embedded in the air outlet.

4. The upper cover according to any one of claims 1 to 3, characterized in that: The drive connection mechanism comprises: A power device, fixedly held on the cover body, to output rotational power; The connecting rod structure is hinged to the pair of clamping arms; the connecting rod structure receives the rotational power output by the power device, thereby pushing and pulling the pair of clamping arms away from or close to each other.

5. The upper cover according to claim 4, characterized in that: The clamping arms are configured into at least two pairs; A synchronization mechanism is connected to the power output end of the power device to synchronously transmit the rotational power output by the power device to the connecting rod structures matching each pair of the clamping arms.

6. A battery box, comprising a lower box with an open top, characterized in that: An upper cover as claimed in any one of claims 1 to 4 is buckled onto the top opening of the lower box body.

7. The battery case according to claim 6, characterized in that: Two oppositely disposed side plates constituting the lower box body are respectively provided with ventilation holes, and a heat conducting part adjacent to the module and fixedly connected to the lower box body is provided on the flow path of the airflow introduced through the ventilation holes.

8. The battery case according to claim 6, characterized in that: A plurality of heat conducting sheets are fixedly provided on the outside of the lower box body, and the heat conducting sheets are arranged at intervals along the height direction of the lower box body.

9. The battery case according to any one of claims 6 to 8, characterized in that: The bottom plate of the lower box body is constructed with a circuitous cooling channel, and the cooling channel is covered with a cooling fin that follows the shape of the cooling channel; a water storage device and a pumping device that is controllably connected to the water storage device are fixed to the outside of the lower box body, and a liquid circulation loop is provided between the pumping device and the cooling channel.

10. The battery case according to claim 9, characterized in that: The liquid circulation loop includes a liquid inlet pipe connected between the liquid outlet of the pumping device and the liquid inlet of the cooling channel, and a liquid return pipe connected between the liquid outlet of the cooling channel and the liquid inlet of the pumping device.

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