Battery temperature adjusting system and electric tool

Abstract

The utility model discloses a battery temperature adjusting system, relates to the technical field of electric tool batteries, solves the problem that a battery pack and a charger are large in size and weight after comprising a radiator in the prior art, and mainly adopts the technical scheme that the battery temperature adjusting system comprises the battery pack, the radiator and the charger, the battery pack is provided with a first mounting position, the charger is provided with a second mounting position, and the radiator is detachably connected with the first mounting position and the second mounting position alternatively, so that when the radiator is mounted at the first mounting position, the battery pack is cooled, and when the radiator is mounted at the second mounting position, the battery pack and / or the charger are / is cooled. The battery pack and the charger are mainly used for improving the portability of the battery pack and the charger on the premise that the heat dissipation performance of the battery pack and the charger is not reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power tool batteries, and in particular to a battery temperature regulation system and a power tool. BACKGROUND

[0002] Power tools have extremely wide application scenarios in today's business environment. In actual work processes, power tools need to rely on battery packs to maintain normal operation, and battery packs need chargers to supplement power when the battery level is low. With the continuous progress of technology and the gradual increase of market performance requirements for power tools, the overall output power of power tools continues to increase. In this case, the discharge current of the battery pack also continues to increase. However, continuous large-current discharge can cause a series of problems, the most prominent of which is that the battery pack frequently appears high-temperature protection phenomenon during use. The battery pack in the prior art is provided with a high-temperature protection function, that is, when the battery pack reaches a preset temperature, the current in and out is reduced to protect the service life of the battery pack. This not only has a serious negative impact on work efficiency, but also greatly reduces the use experience of the product.

[0003] The battery pack and the charger in the prior art often use a fixed heat sink. The heat sink of this design is fixedly installed, which increases the overall volume and weight of the battery pack and the charger, and is not convenient to move and carry. When frequent changes of use location or outdoor work are required, the fixed heat sink will bring inconvenience to the user. When the fixed heat sink fails or is damaged, the entire battery pack or charger needs to be disassembled for repair or replacement. This not only increases the difficulty and time cost of maintenance, but also may cause damage to other components, affecting the overall performance and service life of the equipment. UTILITY MODEL CONTENT

[0004] In order to overcome the problem of large volume and weight of the battery pack and the charger containing the heat sink in the prior art, the present application provides a battery temperature regulation system that can increase the portability of the battery pack and the charger without reducing the heat dissipation performance of the battery pack and the charger.

[0005] In order to achieve the above purpose, the present application adopts the following technical solution: a battery temperature regulation system, comprising a battery pack, a heat sink and a charger, the battery pack is provided with a first mounting position, the charger is provided with a second mounting position, and the heat sink is detachably connected with the first mounting position and the second mounting position, so that when the heat sink is mounted on the first mounting position, the battery pack is cooled, and when the heat sink is mounted on the second mounting position, the battery pack and / or the charger is cooled.

[0006] The first mounting position on the battery pack can be connected with the detachable heat sink, so that the user can use the heat sink in different environments. For example, in a place with high ambient temperature, the heat sink can be directly mounted on the battery pack, so that the electric tool continuously dissipates heat for the battery pack during work, ensuring that the battery pack continuously and stably outputs power. When the user comes to a place with low ambient temperature, the heat sink can be detached from the battery pack, so that the overall weight of the electric tool is reduced. Thanks to the detachable connection of the heat sink, the temperature of the battery pack can still be controlled within a reasonable range during high-intensity work of the electric tool, so that the use time of the battery pack is greatly prolonged. When the battery pack needs to be quickly charged due to low power, the heat sink can be connected to the second mounting position of the charger, so that the heat sink can still continuously dissipate heat for the battery pack, greatly improving the charging efficiency of the battery pack and greatly improving the work efficiency. In addition, since the battery pack and the charger share one heat sink, the carrying weight of the electric tool can be greatly reduced, the use volume is reduced, and the user's operation is facilitated.

[0007] Further, when the heat sink is connected to the first mounting position, the heat sink is electrically connected to the battery pack; or when the heat sink is connected to the second mounting position, the heat sink is electrically connected to the charger; or when the heat sink is connected to the second mounting position, the heat sink is electrically connected to the battery pack.

[0008] With the foregoing technical solution, when the heat sink is connected to the battery pack or the charger, an electrical connection is automatically generated, without the need for the user to perform additional complex wiring operations, greatly improving the convenience of use. Whether in a work site or in a charging scene, the user can quickly install the heat sink and put it into use, saving time and effort; the electrical connection between the heat sink and the charger at the second mounting position can reduce the charge and discharge loss of the battery pack, can completely store the power of the charger into the battery pack, and can further reduce the temperature rise of the battery pack during charging and discharge, improve the efficiency of the battery pack during charging, and prolong the service life of the battery pack.

[0009] Further, the charger top is provided with a charging position, and the charging position and / or the second mounting position are inclined by 0°-45° with respect to the bottom surface of the charger.

[0010] With the foregoing technical solution, the inclined charging position and the second mounting position make the connection of the battery pack and the installation of the heat sink more ergonomic, so that the user can operate in a more natural and comfortable posture without having to bend over or stretch his arms, reducing the feeling of fatigue. The inclined charging position can make the connection between the battery pack and the charger more stable, so that the battery pack is not easy to loosen or fall off during charging, ensuring the safety and stability of charging.

[0011] Further, the battery pack comprises a shell and a battery cell, the shell is provided with a heat dissipation channel in communication with the outside, the heat dissipation channel passes through the battery cell, and when the battery pack is connected with the radiator, the radiator communicates with the air inlet of the heat dissipation channel to make the air pass through the battery cell to dissipate heat.

[0012] By adopting the foregoing technical scheme, the heat dissipation channel directly passes through the battery cell, so that the radiator can directly dissipate heat from the battery cell by communicating with the heat dissipation channel. In this way, heat can be quickly transferred from the battery cell to the outside, greatly improving the heat dissipation efficiency. Compared with the traditional indirect heat dissipation mode, this direct heat dissipation path can more effectively reduce the temperature of the battery cell and improve the performance and service life of the battery pack.

[0013] Further, the charger is provided with a charging position at the top, the second mounting position is between the charging position and the shell in the charger, the second mounting position is provided with a first mesh in communication with the inside of the charger and the second mounting position, and a second mesh in communication with the charging position and the second mounting position.

[0014] By adopting the foregoing technical scheme, a smooth heat dissipation channel network is formed between the inside of the charger, the charging position and the second mounting position by arranging the first mesh and the second mesh. When the radiator is mounted on the second mounting position, the radiator can suck the heat of the battery pack and blow it out from the charger, achieving the effect of simultaneously dissipating heat from the battery pack and the charger. In addition, the heat accumulation in the inside of the charger and the charging position can be avoided, and timely heat dissipation can reduce the risk of damage to the charger and the battery pack due to overheating, thereby improving the stability and reliability of the equipment.

[0015] Further, the battery pack comprises a shell and a battery cell, the shell is provided with a heat dissipation channel in communication with the outside, the heat dissipation channel passes through the battery cell, and when the battery pack is connected with the radiator, the radiator communicates with the air inlet of the heat dissipation channel to make the air pass through the battery cell to dissipate heat.

[0016] By adopting the foregoing technical scheme, the heat dissipation channel in the battery pack is connected with the charging position through the third mounting position, so that when the battery pack is charging, the radiator can directly suck away the heat at the battery cell by being mounted on the second mounting position, and also can greatly reduce the temperature of the battery cell by being mounted on the first mounting position, and part of the wind force can be blown into the charger through the third mounting position and the first mesh and the second mesh to avoid heat accumulation in the inside of the charger. This design can enable the user to flexibly install the position of the radiator, thereby maximizing the overall charging efficiency and increasing the service life of electronic components.

[0017] An electric tool comprises the battery temperature regulating system and a machine body, and the battery pack is mounted on the machine body, thereby supplying power to the machine body of the electric tool.

[0018] Adopting the technical scheme, the electric tool adopting the battery temperature adjusting system can flexibly use the radiator in different environments, for example, in a place with high ambient temperature, the radiator can be directly installed on the battery pack, so that the electric tool continuously radiates the battery pack when working, ensuring that the battery pack continuously and stably outputs power, when coming to a place with low ambient temperature, the radiator can be detached from the battery pack, so that the weight of the electric tool as a whole is reduced, thanks to the detachable connection of the radiator, in high-intensity operation of the electric tool, the temperature of the battery pack can still be controlled within a reasonable range, so that the use time of the battery pack is greatly prolonged, when the battery pack needs to be quickly charged due to low power, the radiator can be connected to the second mounting position of the charger at this time, so that the radiator can still continuously radiate the battery pack, greatly improving the charging efficiency of the battery pack, greatly improving the work efficiency, and since the battery pack and the charger share one radiator, the carrying weight of the electric tool can be greatly reduced, the use volume is reduced, and the user operation is facilitated.

[0019] Further, the fuselage is provided with a heat dissipation air duct communicating with the outside, the heat dissipation air duct comprises an air inlet and an air outlet, and the air inlet of the heat dissipation air duct is connected with the third mounting position, so that the heat dissipation channel and the air inlet of the heat dissipation air duct are communicated.

[0020] Adopting the technical scheme, by arranging the heat dissipation air duct on the fuselage, the heat dissipation effect of the radiator can also act on the fuselage of the electric tool, so that the fuselage can be provided with a heat dissipation device, the volume and weight of the electric tool are further reduced, and the portability of the electric tool is increased.

[0021] Further, the control panel of the fuselage is arranged on one side close to the air inlet of the heat dissipation air duct.

[0022] Adopting the technical scheme, the control panel is arranged on one side close to the air inlet of the heat dissipation air duct, so that the control panel can be preferentially contacted with the cooling airflow entering the heat dissipation air duct. In this way, it can be ensured that the control panel can be rapidly cooled during working, so as to reduce the temperature and avoid performance degradation or failure caused by overheating.

[0023] Further, the positive and negative terminals of the radiator are movable, so as to achieve horizontal or vertical plug-in connection between the radiator and the socket of the battery pack or the charger. BRIEF DESCRIPTION OF DRAWINGS

[0024] The application will be further described below in combination with the drawings:

[0025] Figure 1 It is a schematic view of the radiator and the battery pack in the battery temperature adjusting system of the application;

[0026] Figure 2A diagram illustrating the charging of a battery pack connected to a heat sink on a charger;

[0027] Figure 3 A diagram illustrating the charging of a battery pack on a charger connected to a heat sink;

[0028] Figure 4 This is a diagram showing the heat sink installed on the charger.

[0029] Figure 5 A schematic diagram showing a battery pack with a heat sink mounted on a power tool.

[0030] Figure 6 This is a diagram illustrating how the radiator dissipates heat from the battery pack and power tools after it is activated.

[0031] Figure descriptions: 1. Battery pack; 11. First mounting position; 12. Housing; 121. Heat dissipation channel; 13. Third mounting position; 2. Heat sink; 3. Charger; 31. Second mounting position; 32. Charging position; 33. First grid; 34. Second grid; 4. Power tool; 41. Heat dissipation airflow; 42. Control board; 43. Card interface; 5. Positive and negative terminals. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0033] The terms "first," "second," etc. (if present) in the specification and claims of this application are used to distinguish similar objects, not to describe a specific order or sequence. Even if "second" is used before a technical feature for distinction, it does not necessarily imply the presence of "first." It should be understood that in this application, "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. It should be understood that in this application, "multiple" refers to two or more. "And / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, X and / or Y can represent: X alone, X and Y simultaneously, and Y alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "Containing X, Y, and Z," "Containing X, Y, and Z" means that all three X, Y, and Z are included; "Containing X, Y, or Z" means that one of X, Y, and Z is included; "Containing X, Y, and / or Z" means that any one, two, or three of X, Y, and Z are included.

[0034] The technical solutions of this application will be described in detail below with specific embodiments. The following specific embodiments can be combined or substituted with each other according to the actual situation, and the same or similar concepts or processes may not be described again in some embodiments.

[0035] like Figures 1 to 4 As shown, this application provides a battery temperature regulation system, including a battery pack 1, a heat sink 2, and a charger 3. The battery pack 1 is provided with a first mounting position 11, and the charger 3 is provided with a second mounting position 31. The heat sink 2 is detachably connected to either the first mounting position 11 or the second mounting position 31, so that when the heat sink 2 is installed in the first mounting position 11, it dissipates heat from the battery pack 1, and when the heat sink 2 is installed in the second mounting position 31, it dissipates heat from the battery pack 1 and / or the charger 3.

[0036] After adopting the above technical solution, this application has the following advantages: The first mounting position 11 on the battery pack 1 can be connected to a detachable heat sink 2, allowing the user to use the heat sink 2 in different environments. For example, in places with high ambient temperatures, the heat sink 2 can be directly installed on the battery pack 1, so that the power tool 4 can continuously dissipate heat from the battery pack 1 during operation, ensuring a continuous and stable power output from the battery pack 1. When in places with low ambient temperatures, the heat sink 2 can be removed from the battery pack 1, reducing the overall weight of the power tool 4. Thanks to the detachable connection of the heat sink 2, During high-intensity operation of the power tool 4, the temperature of the battery pack 1 can still be controlled within a reasonable range, greatly extending the usage time of the battery pack 1. When the battery pack 1 is low on power and needs to be quickly charged, the heat sink 2 can be connected to the second mounting position 31 of the charger 3, so that the heat sink 2 can continue to dissipate heat for the battery pack 1, greatly improving the charging efficiency of the battery pack 1 and significantly enhancing work efficiency. Furthermore, since the battery pack 1 and the charger 3 share a heat sink 2, the weight of the power tool 4 can be greatly reduced when carried out, the size of the tool can be reduced, and the tool can be operated more conveniently.

[0037] Understandably, the connection between the first mounting position 11 and the heat sink 2 can be secured by screws, pins, clips, external brackets, or other structures.

[0038] Preferably, the heat sink 2 is a cooling fan.

[0039] Understandably, the heat sink 2 can either draw in air or blow air to cool the battery pack 1, depending on the overall structure and performance of the product.

[0040] Furthermore, when the heat sink 2 is connected to the first mounting position 11, the heat sink 2 is electrically connected to the battery pack 1; or, when the heat sink 2 is connected to the second mounting position 31, the heat sink 2 is electrically connected to the charger 3; or, when the heat sink 2 is connected to the second mounting position 31, the heat sink 2 is electrically connected to the battery pack 1.

[0041] By adopting the aforementioned technical solution, an electrical connection is automatically established when the heat sink 2 is connected to the battery pack 1 or the charger 3, eliminating the need for users to perform additional complex wiring operations and greatly improving ease of use. Whether at the work site or in a charging scenario, users can quickly install the heat sink 2 and put it into use, saving time and effort. The electrical connection between the heat sink 2 and the charger 3 at the second mounting position 31 reduces the charging and discharging losses of the battery pack 1, allows the charger 3's power to be fully stored in the battery pack 1, and further reduces the temperature rise of the battery pack 1 during charging and discharging, improving the charging efficiency of the battery pack 1 and extending its lifespan.

[0042] Furthermore, the charger 3 is provided with a charging position 32 on the top, and the charging position 32 or / and the second mounting position 31 are inclined at 0° to 45° relative to the bottom surface of the charger 3.

[0043] By adopting the aforementioned technical solution, the tilted charging position 32 and the second mounting position 31 make the connection between the battery pack 1 and the heat sink 2 more ergonomic. Users do not need to bend over excessively or stretch their arms during operation, allowing for a more natural and comfortable posture and reducing physical fatigue. The tilted charging position 32 also makes the connection between the battery pack 1 and the charger 3 more stable. Gravity prevents the battery pack 1 from loosening or falling off during charging, ensuring safe and stable charging.

[0044] Specifically, the charging position has an open top design, while the second mounting position has a side-open design. A partition is provided between the charging position and the second mounting position to support the battery pack during charging. The charging position has an interface that matches the first mounting position of the battery pack for snapping the battery pack in place, ensuring the stability of the battery pack during charging. The second mounting position is located on the top of the charger housing. The heat sink can enter and exit the second mounting position from the side, and the bottom surface of the second mounting position has a socket that matches the positive and negative terminals for direct electrical connection between the heat sink and the charger.

[0045] Furthermore, the battery pack 1 includes a housing 12 and battery cells. The housing 12 is provided with a heat dissipation channel 121 that communicates with the outside. The heat dissipation channel 121 passes through the battery cells. When the battery pack 1 is connected to the heat sink 2, the heat sink 2 is connected to the air inlet of the heat dissipation channel 121 so that air passes through the battery cells to dissipate heat from them.

[0046] Using the aforementioned technical solution, the heat dissipation channel 121 passes directly through the battery cell, allowing the heat sink 2 to directly dissipate heat from the battery cell through the heat dissipation channel 121. This ensures that heat can be quickly transferred from the battery cell to the outside, greatly improving heat dissipation efficiency. Compared with traditional indirect heat dissipation methods, this direct heat dissipation path can more effectively reduce the temperature of the battery cell and improve the performance and lifespan of the battery pack 1.

[0047] Furthermore, the charger 3 has a charging position 32 on its top, and the second mounting position 31 is located between the charging position 32 and the outer shell inside the charger 3. The second mounting position 31 has a first grid 33 that connects the inside of the charger 3 and the second mounting position 31, and a second grid 34 that connects the charging position 32 and the second mounting position 31.

[0048] By adopting the aforementioned technical solution, and by setting the first grid 33 and the second grid 34, a smooth heat dissipation channel network 121 is formed inside the charger 3, between the charging position 32 and the second mounting position 31. When the heat sink 2 is installed in the second mounting position 31, the heat sink 2 can absorb the heat of the battery pack 1 and blow it out from the direction of the charger 3, achieving the effect of simultaneously dissipating heat from both the battery pack 1 and the charger 3. This also prevents heat accumulation inside the charger 3 and the charging position 32, ensuring timely heat dissipation and reducing the risk of damage to the charger 3 and the battery pack 1 due to overheating, thereby improving the stability and reliability of the equipment.

[0049] Specifically, the control and power supply of the heat sink 2 in the charger 3 are entirely handled by the charger 3. The heat sink 2 is activated mainly after the battery pack 1 is inserted into the charging position 32 and the charger turns on the power switch. The heat sink 2 starts working and continues until the entire charging process is completed. When the temperature of the battery pack 1 drops to the set value, such as 25°C, the temperature information is fed back to the charger 3 for shutdown determination. During the entire charging process, if the battery pack 1 is too hot to reach the charging state, the charger 3 stops charging and waits for the heat sink 2 to dissipate heat from the battery pack 1. When the temperature reaches a safe value, the charger 3 starts charging.

[0050] Understandably, the placement of the heat sink 2 on the battery pack 1 or charger 3 can be different, such as placing it on the side or bottom of the battery pack 1, or on the bottom or side of the charger 3, etc. The overall goal of the solution is to dissipate heat from the battery pack 1.

[0051] Furthermore, the battery pack 1 includes a housing 12 and battery cells. The housing 12 is provided with a heat dissipation channel 121 communicating with the outside. The battery pack 1 is provided with a third mounting position 13. The heat dissipation channel 121 is connected to the third mounting position 13. The battery pack 1 is connected to the charging position 32 through the third mounting position 13.

[0052] Using the aforementioned technical solution, since the heat dissipation channel 121 inside the battery pack 1 is connected to the charging position 32 through the third mounting position 13, the battery pack 1 can, during charging, [the following occurs:] Figure 3 As shown, the heat sink 2 can directly absorb heat from the battery cell by being installed in the second mounting position 31; it can also... Figure 2 As shown, the heat sink 2 significantly reduces the temperature of the battery cell by being installed in the first mounting position 11, and blows some air through the third mounting position 13, the first grid 33 and the second grid 34 into the charger 3, preventing heat accumulation inside the charger 3. This design allows users to flexibly install the heat sink 2, thereby maximizing the overall charging efficiency and increasing the lifespan of electronic components.

[0053] Understandably, in order to effectively utilize the energy of battery pack 1, the radiator 2 can be set to start with a switch, and can be manually started when needed. For example, the fan can be started and stopped according to the temperature data inside battery pack 1. If the temperature of battery pack 1 reaches 60℃, the fan starts; if the temperature drops to 30℃, the fan stops. In addition to temperature control, the battery pack is equipped with low-voltage protection to stop the fan. When the battery pack voltage is lower than the protection value, it can be actively shut off to stop discharging.

[0054] Specifically, the positive and negative terminals 5 of the heat sink 2 are electrically connected to the cells of the battery pack 1, or the positive and negative terminals 5 of the heat sink 2 are electrically connected to the socket of the charger 3.

[0055] like Figure 5 As shown, a power tool 4 includes the aforementioned battery temperature regulation system and a body, wherein the battery pack 1 is mounted on the body, thereby supplying power to the body of the power tool 4.

[0056] Using the aforementioned technical solution, the power tool 4 with the battery temperature regulation system can flexibly use the radiator 2 in different environments. For example, in high-temperature environments, the radiator 2 can be directly installed on the battery pack 1, allowing the power tool 4 to continuously dissipate heat from the battery pack 1 during operation, ensuring a continuous and stable power output from the battery pack 1. When in low-temperature environments, the radiator 2 can be removed from the battery pack 1, reducing the overall weight of the power tool 4. Thanks to the detachable connection of the radiator 2, the temperature of the battery pack 1 can still be controlled within a reasonable range during high-intensity operation of the power tool 4, greatly extending the battery pack 1's usage time. When the battery pack 1 is low on power and needs to be quickly charged, the radiator 2 can be connected to the second mounting position 31 of the charger 3, allowing the radiator 2 to continue dissipating heat from the battery pack 1, greatly improving the charging efficiency of the battery pack 1 and significantly enhancing work efficiency. Furthermore, since the battery pack 1 and the charger 3 share a single radiator 2, the weight of the power tool 4 when carried out can be greatly reduced, its size can be reduced, and it is more convenient for users to operate.

[0057] Furthermore, such as Figure 6 As shown, the body is provided with a heat dissipation air passage 41 that communicates with the outside. The heat dissipation air passage 41 includes an air inlet and an air outlet. The air inlet of the heat dissipation air passage 41 is connected to the third mounting position 13 so that the heat dissipation channel 121 is connected to the air inlet of the heat dissipation air passage 41.

[0058] By adopting the aforementioned technical solution, by setting a heat dissipation air passage 41 on the machine body, the heat dissipation effect of the radiator 2 can also be applied to the machine body of the power tool 4, so that the heat dissipation device can be eliminated from the machine body, further reducing the size and weight of the power tool 4 and increasing the portability of the power tool 4.

[0059] Furthermore, such as Figure 6 As shown, the control board 42 of the machine body is located on the side near the air inlet of the heat dissipation air duct 41.

[0060] By adopting the aforementioned technical solution, the control board 42 is positioned on the side close to the air inlet of the heat dissipation airflow 41, allowing the control board 42 to preferentially contact the cooling airflow entering the heat dissipation airflow 41. This ensures that the control board 42 can quickly dissipate heat during operation, reducing its temperature and preventing performance degradation or malfunction due to overheating.

[0061] Furthermore, the third mounting position 13 is a bayonet, and the power tool 4 is provided with a card interface 43 corresponding to the bayonet. The power tool 4 is detachably connected to the bayonet of the housing 12 through the card interface 43.

[0062] Using the aforementioned technical solution, the power tool 4 is often subjected to vibration and impact during use. The design of the bayonet and interface 43 typically has a certain degree of resistance to vibration and impact, effectively protecting the connection parts from damage. Even in harsh working environments, it ensures a reliable connection between the power tool 4 and the battery pack 1.

[0063] Specifically, the charging port 32 also adopts the design of the card interface 43.

[0064] Furthermore, the positive and negative terminals 5 of the heat sink 2 are movable, allowing the heat sink 2 to be electrically connected to the socket of the battery pack 1 or charger 3 by horizontal or vertical insertion. It should be noted that the movable nature of the positive and negative terminals 5 here means that the positive and negative terminals 5 can be housed within the heat sink 2 in the retracted position and protrude from the heat sink 2 in the extended position when electrically connected to the charger 3 or battery pack 1, and can be switched between the retracted and extended positions. Figure 1 and 2 Above, the positive and negative terminals 5 of the heat sink are vertically inserted into the battery pack 1 to achieve electrical connection; in Figure 3 and 4 On the top, the positive and negative terminals 5 of the heat sink are horizontally connected to the charger 3 to achieve electrical connection.

[0065] The path L in the diagram is a schematic diagram of the airflow path when the radiator dissipates heat.

[0066] Furthermore, the heat dissipation channel 121 includes a side channel and a main channel passing through the battery cell, and the side channel is connected to the third mounting position 13.

[0067] Using the aforementioned technical solution, the side channel is connected to the third mounting position 13, which can focus on heat dissipation of the heat generated at the connection between the battery pack 1 and the charging position 32. Since the side channel is staggered from the main channel, it does not pass through the battery cell. Therefore, the air temperature in the side channel is relatively lower. The lower temperature air can better dissipate heat from the charging position 32, effectively reducing the temperature at the connection between the battery pack 1 and the charger 3, and improving the stability and reliability of the connection.

[0068] Specifically, such as Figure 6 As shown, L1 represents the wind flowing through the main channel, and L2 represents the wind flowing through the side channel.

[0069] In addition to the preferred embodiments described above, this application has other implementation methods. All other embodiments obtained by those skilled in the art based on the embodiments in this application without creative effort are within the scope of protection claimed in this application.

Claims

1. A battery temperature regulating system comprising a battery pack (1), a heat sink (2) and a charger (3), characterized in that, The battery pack (1) is provided with a first mounting position (11), the charger (3) is provided with a second mounting position (31), and the radiator (2) is detachably connected with the first mounting position (11) and the second mounting position (31), so that when the radiator (2) is mounted on the first mounting position (11), the battery pack (1) is cooled, and when the radiator (2) is mounted on the second mounting position (31), the battery pack (1) and / or the charger (3) is cooled.

2. The battery temperature regulating system of claim 1, wherein, When the radiator (2) is connected with the first mounting position (11), the radiator (2) is electrically connected with the battery pack (1); or when the radiator (2) is connected with the second mounting position (31), the radiator (2) is electrically connected with the charger (3); or when the radiator (2) is connected with the second mounting position (31), the radiator (2) is electrically connected with the battery pack (1).

3. The battery temperature regulating system of claim 1, wherein, The charger (3) is provided with a charging position (32) on the top, and the charging position (32) and / or the second mounting position (31) are inclined by 0°-45° relative to the bottom surface of the charger (3).

4. The battery temperature regulating system of claim 1, wherein, The battery pack (1) comprises a shell (12) and a battery cell, the shell (12) is provided with a heat dissipation channel (121) in communication with the outside, the heat dissipation channel (121) passes through the battery cell, and when the battery pack (1) is connected with the radiator (2), the radiator (2) communicates with the air inlet of the heat dissipation channel (121), so that air passes through the battery cell to cool the battery cell.

5. The battery temperature regulating system of claim 1, wherein, The charger (3) is provided with a charging position (32) on the top, and the second mounting position (31) is between the charging position (32) and the shell of the charger (3), the second mounting position (31) is provided with a first mesh (33) in communication with the inside of the charger (3) and the second mounting position (31), and a second mesh (34) in communication with the charging position (32) and the second mounting position (31).

6. The battery temperature regulating system of claim 5, wherein, The battery pack (1) comprises a shell (12) and a battery cell, the shell (12) is provided with a heat dissipation channel (121) in communication with the outside, the battery pack (1) is provided with a third mounting position (13), the heat dissipation channel (121) is in communication with the third mounting position (13), and the battery pack (1) is connected with the charging position (32) through the third mounting position (13).

7. A battery temperature regulating system according to any one of claims 1 and 6, wherein, The positive and negative terminals (5) of the radiator (2) are movable, so that the radiator (2) is transversely or longitudinally plugged into the socket of the battery pack (1) or the charger (3) to achieve electrical connection.

8. An electric power tool (4) comprising the battery temperature adjustment system and the main body according to claim 6, characterized by The battery pack (1) is mounted on the machine body, thereby supplying power to the machine body of the electric tool (4).

9. An electric power tool (4) according to claim 8, characterized in that The machine body is provided with a heat dissipation air duct (41) in communication with the outside, the heat dissipation air duct (41) comprises an air inlet and an air outlet, and the air inlet of the heat dissipation air duct (41) is connected with the third mounting position (13), so that the heat dissipation channel (121) is in communication with the air inlet of the heat dissipation air duct (41).

10. An electric power tool (4) according to claim 8, characterized in that The control panel (42) of the machine body is arranged on one side close to the air inlet of the heat dissipation air duct (41).

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