Battery device

Abstract

The utility model discloses an embodiment of a battery device, which comprises: an outer shell, a battery body and an air extraction mechanism; the outer shell is provided with a wind flow passage and a shell air inlet, the shell air inlet is communicated with the air inlet end of the wind flow passage; the battery body is arranged in the wind flow passage, and the battery body comprises a plurality of battery cell modules, a first air gap is arranged between adjacent battery cell modules, and the first air gap is communicated with the wind flow passage; the air extraction mechanism is fixed to the outer shell, and the air inlet of the air extraction mechanism is communicated with the air outlet end of the wind flow passage. The battery device of the utility model is used to solve the problem of poor heat dissipation effect of the local position of the battery in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery device. Background Technology

[0002] With the development of renewable energy, battery modules, as key components of energy storage, are receiving increasing attention. During battery operation, especially during high-rate charging and discharging, the battery cells continuously generate a large amount of heat. If this heat cannot be dissipated promptly and evenly, it can lead to excessively high and uneven temperatures within the battery module. Localized overheating not only accelerates battery aging and reduces capacity but can also trigger thermal runaway, causing serious safety incidents. Therefore, an efficient and reliable thermal management system is a crucial aspect of battery technology development.

[0003] Currently, air cooling remains the mainstream solution for many battery systems due to its advantages such as simple structure, low cost, and convenient maintenance. However, traditional air cooling systems mostly use a fan-driven blowing structure. After the cooling airflow enters the airflow channel of the battery, it is prone to generating eddies and turbulence due to obstruction during its forward movement. The cells closer to the fan have better cooling effect, while the cells farther away from the fan suffer from insufficient airflow and air pressure, resulting in a sharp drop in heat dissipation efficiency and leading to poor heat dissipation in some parts of the battery module. Utility Model Content

[0004] The purpose of this invention is to propose a battery device that aims to solve the problem of poor heat dissipation in localized areas of batteries in the prior art.

[0005] To achieve one or more of the above objectives or other objectives, this utility model proposes a battery device, which includes: an outer casing, a battery body, and a ventilation mechanism. The outer casing is provided with an airflow channel and an air inlet, and the air inlet is connected to the air inlet end of the airflow channel; The battery body is located in the airflow channel. The battery body includes multiple cell modules. A first air passage gap is provided between adjacent cell modules. The first air passage gap is connected to the airflow channel. The exhaust mechanism is fixed to the outer casing, and the air inlet of the exhaust mechanism is connected to the air outlet of the airflow channel.

[0006] In some embodiments of the battery device of this utility model, the airflow channel is straight.

[0007] In some embodiments of the battery device of this utility model, the battery device further includes: a temperature detection mechanism and a control module; The temperature detection mechanism is located on the surface of the plurality of battery cell modules and / or at the connection end of the plurality of battery cell modules; The control module is communicatively connected to the temperature detection mechanism to control the ventilation mechanism.

[0008] In some embodiments of the battery device of this utility model, each of the battery cell modules includes: a mounting frame, multiple battery cell bodies, a positive electrode conductive plate, and a negative electrode conductive plate; The mounting bracket has installation space; Multiple battery cell bodies are installed in the installation space, and a second air passage gap is provided between adjacent battery cell bodies. The second air passage gap is connected to the airflow channel through the installation space. The positive electrode conductive plate is disposed on the mounting frame and electrically connected to the positive terminal of the plurality of battery cell bodies; The negative electrode conductive plate is disposed on the mounting frame and electrically connected to the negative terminals of the plurality of battery cell bodies; The positive electrode plate of each of the battery cell modules is connected to the negative electrode plate of another battery cell module or the total positive terminal of the battery body; The negative electrode plate of each of the battery cell modules is connected to the positive electrode plate of another battery cell module or the total negative terminal of the battery body.

[0009] In some embodiments of the battery device of this utility model, the temperature detection mechanism includes: a cell temperature detection component and an interface temperature detection component; The cell temperature detection component is disposed on the surface of the plurality of cell bodies and is communicatively connected to the control module; The interface temperature detection component is located on the positive electrode conductive plate and the negative electrode conductive plate of the plurality of battery cell modules, and is communicatively connected to the control module.

[0010] In some embodiments of the battery device of this utility model, the outer casing includes: a first end plate, a second end plate, and a ring plate; The air inlet of the housing is located on the first end plate; The second end plate is provided with a housing air outlet, which is connected to the airflow channel and the air inlet of the exhaust mechanism respectively; The ring plate is provided with the airflow channel, and the two ends of the ring plate are respectively fixed around the first end plate and the second end plate.

[0011] In some embodiments of the battery device of this utility model, the first end plate is provided with a plurality of housing air inlets, which are arranged in a matrix.

[0012] In some embodiments of the battery device of this utility model, the battery device further includes a safety disconnect mechanism, which is connected to the main connection terminal of the battery body. The control module is also communicatively connected to the safety disconnect mechanism to control the connection of the ventilation mechanism.

[0013] In some embodiments of the battery device of this utility model, the safety disconnect mechanism is provided with a temperature self-detection module, which is used to detect the temperature of the safety disconnect mechanism itself, and the temperature self-detection module is communicatively connected to the control module.

[0014] In some embodiments of the battery device of this utility model, the plurality of battery cell modules are stacked and / or arranged side by side, and a first air gap is provided between every two battery cell modules. Each of the cell modules is electrically connected to the main connection terminal of an adjacent cell module or battery body.

[0015] The present invention has the following beneficial effects: The battery device proposed in this utility model introduces external gas into the airflow channel through the air inlet of the housing, and then uses a suction mechanism to exhaust the gas in the airflow channel, so that the introduced gas can dissipate heat on the outer surface of the battery body. Then, through the first air gap, the introduced gas can dissipate heat on the inner surface of the battery body. Moreover, the air inlet of the suction mechanism is connected to the air outlet of the airflow channel, so that the gas at the air inlet of the airflow channel is guided to the air outlet of the airflow channel, avoiding the situation where the heat dissipation effect of the battery body at the air outlet of the airflow channel is much worse than that at the air inlet of the airflow channel due to insufficient air volume and air pressure. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] in: Figure 1 This is a schematic diagram of the battery device in one embodiment of the present invention; Figure 2 This is a schematic diagram of the battery device without the top plate in one embodiment of the present invention; Figure 3 This is a schematic diagram of the battery body of the battery device in one embodiment of the present invention; Figure 4 This is a partial structural diagram of the battery body of the battery device in one embodiment of the present invention; Figure 5 This is a connection block diagram of the battery device in one embodiment of the present invention; Figure 6 This is a schematic diagram of the assembly structure of two battery cell modules in one embodiment of the present invention; Figure 7 for Figure 6 Another structural diagram from a different perspective; Figure 8 This is a schematic diagram of the structure of a single cell module of the battery device in one embodiment of the present invention; Figure 9 This is a structural schematic diagram of the disassembled state of a single cell module of the battery device in one embodiment of the present invention; Figure 10 This is a partial structural schematic diagram of a single cell module of a battery device in one embodiment of the present invention, viewed from another perspective.

[0018] The image is labeled with: 10. Outer casing; 101. Airflow channel; 102. Air inlet of the casing; 11. First end plate; 12. Second end plate; 13. Ring plate; 131. Bottom plate; 132. Side plate; 133. Top plate; 14. Auxiliary mounting lugs; 20. Battery body; 21. Cell module; 211. Mounting bracket; 21101. First bracket; 21102. Second bracket; 2111. Mounting space; 2112. Through hole; 2113. Cell insertion hole; 2114. Terminal hole; 2115. Plate insertion post; 2116. First suspended top piece; 2117. Second suspended top piece; 2118. Suspended clip; 2119. Suspension 212. Hollow connector; 213. Cell body; 214. Positive electrode conductive plate; 215. Negative electrode conductive plate; 216. Second air gap; 217. Connecting card group; 2161. Snap-fit ​​component; 2162. Fitting component; 217. Suspended heat dissipation gap; 218. Module through hole; 22. First air gap; 23. Main positive terminal; 24. Main negative terminal; 25. Transition conductor; 26. Insulating plate; 27. Screw; 28. Module mounting plate; 30. Exhaust mechanism; 40. Temperature detection mechanism; 41. Cell temperature detection component; 42. Interface temperature detection component; 50. Control module; 60. Safety disconnect mechanism. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Reference Figures 1 to 10 The first embodiment of this utility model proposes a battery device, which includes: a housing 10, a battery body 20, and a ventilation mechanism 30. The outer casing 10 is provided with an airflow channel 101 and an air inlet 102, and the air inlet 102 is connected to the air inlet end of the airflow channel 101. The battery body 20 is disposed in the airflow channel 101. The battery body 20 includes a plurality of battery cell modules 21. A first air passage gap 22 is provided between adjacent battery cell modules 21. The first air passage gap 22 is connected to the airflow channel 101. The exhaust mechanism 30 is fixed to the outer casing 10, and the air inlet of the exhaust mechanism 30 is connected to the air outlet of the airflow channel 101.

[0021] In this embodiment, when the exhaust mechanism 30 is not in operation, the air outside the outer shell 10 is introduced into the airflow channel 101 through the air inlet 102 of the shell. The air circulates in the airflow channel 101 and flows over the entire outer surface of the battery body 20. The first air gap 22 is used to allow the air to flow over the surface of each cell module 21, and then the air is discharged through the air outlet duct at the exhaust mechanism 30.

[0022] When the exhaust mechanism 30 is activated, it increases the air pressure in the airflow channel 101, accelerates the airflow speed in the airflow channel 101, and facilitates the continuous introduction of air that has not undergone heat exchange into the airflow channel 101, thereby improving the heat dissipation effect of the battery body 20.

[0023] By utilizing the first air gap 22, not only can the outer surface of each cell module 21 inside the battery body 20 be cooled, but the resistance to airflow can also be reduced, thus reducing the occurrence of poor local heat dissipation in the battery body 20.

[0024] By using the exhaust mechanism 30, the air in the airflow channel 101 is pressurized to reduce the resistance of the incoming air and avoid the situation where the heat dissipation effect of the battery body 20 at the air outlet end of the airflow channel 101 is much worse than that at the air inlet end of the airflow channel 101.

[0025] In other embodiments of the battery device of this utility model, the outer shell 10 at the air inlet 102 is also equipped with a ventilation mechanism 30 to reduce the resistance of air flowing into the airflow channel 101.

[0026] In some embodiments of the battery device of this utility model, reference is made to... Figure 2 The airflow channel 101 is in a straight line shape.

[0027] In this embodiment, the heat generated by multiple battery cell modules 21 is dispersed by accelerating air convection, thereby reducing the resistance to the forward flow of air.

[0028] In some embodiments of the battery device of this utility model, reference is made to... Figure 2 and Figure 5 The battery device also includes: a temperature detection mechanism 40 and a control module 50; The temperature detection mechanism 40 is disposed on the surface of the plurality of battery cell modules 21 and / or the connection end of the plurality of battery cell modules 21; The control module 50 is communicatively connected to the temperature detection mechanism 40 to control the ventilation mechanism 30.

[0029] In this embodiment, the temperature detection mechanism 40 is used to detect the temperature at different locations, and the control module 50 controls the rotation speed of the exhaust mechanism 30 based on the temperature detected by the temperature detection mechanism 40 to achieve precise heat dissipation.

[0030] In some embodiments of the battery device of this utility model, reference is made to... Figures 6 to 10 Each of the battery cell modules 21 includes: a mounting frame 211, multiple battery cell bodies 212, a positive electrode conductive plate 213, and a negative electrode conductive plate 214; Mounting bracket 211 has installation space 2111; Multiple battery cell bodies 212 are installed in the installation space 2111, and a second air passage gap 215 is provided between adjacent battery cell bodies 212. The second air passage gap 215 is connected to the airflow channel 101 through the installation space 2111. The positive electrode conductive plate 213 is disposed on the mounting frame 211 and electrically connected to the positive terminal of the plurality of battery cell bodies 212; The negative electrode conductive plate 214 is disposed on the mounting frame 211 and is electrically connected to the negative terminals of the plurality of battery cell bodies 212; The positive electrode conductive plate 213 of each of the battery cell modules 21 is connected to the negative electrode conductive plate 214 of another battery cell module 21 or the total positive terminal 23 of the battery body 20. The negative electrode plate 214 of each of the battery cell modules 21 is connected to the positive electrode plate 213 of another battery cell module 21 or the total negative terminal 24 of the battery body 20.

[0031] In this embodiment, the positive terminals of multiple battery cell bodies 212 are connected using the positive electrode connecting plate 213, the negative terminals of multiple battery cell bodies 212 are connected using the negative electrode connecting plate 214, and the positions of multiple battery cell bodies 212 are defined using the mounting bracket 211. The large-volume battery is first divided into multiple small-volume battery cell bodies 212, which initially improves the heat dissipation efficiency of the battery body 20. Then, the heat dissipation efficiency of each battery cell body 212 is further improved by using the second air gap 215 between adjacent battery cell bodies 212. Compared with the large-volume battery as a whole, when the external air passes through the battery body 20, it can not only carry away the heat of the overall surface of the battery body 20, but also carry away the heat inside the battery body 20, thereby improving the heat dissipation efficiency of the battery body 20.

[0032] Specifically, when the battery cell module 21 is located on the outermost side, the second air gap 215 can be connected to the airflow channel 101 only through the mounting space 2111. When the battery cell module 21 is located on the inner side, the second air gap 215 needs to be connected to the airflow channel 101 through the mounting space 2111 and the first air gap 22. In some embodiments of the battery device of this utility model, reference is made to... Figures 6 to 10 The plurality of battery cell modules 21 are stacked and / or arranged side by side, and a first air gap 22 is provided between every two battery cell modules 21. Each of the cell modules 21 is electrically connected to the main connection terminal of an adjacent cell module 21 or battery body 20.

[0033] In this embodiment, multiple battery cell modules 21 are assembled in different ways.

[0034] In some embodiments of the battery device of this utility model, the battery body 20 further includes a transition conductor 25; the transition conductor 25 connects the positive electrode conductor 213 of one of the two interconnected cell modules 21 to the negative electrode conductor 214 of the other cell module 21.

[0035] In this embodiment, it is convenient to increase the number of cell modules 21 connected in the battery body 20. At the same time, with the help of the first air gap 22, it is convenient to perform heat dissipation treatment on the outer surface of each cell module 21, and also to ensure the heat dissipation effect of each cell module 21.

[0036] Specifically, the cell body 212 adopts the size of a SubC type battery. The cell body 212 is a cylindrical battery.

[0037] In some embodiments of the battery device of this utility model, reference is made to... Figures 6 to 10 The mounting frame 211 includes a first frame 21101 and a second frame 21102, which are spaced apart to form the mounting space 2111.

[0038] In this embodiment, the installation stability of the battery cell body 212 is improved.

[0039] In some embodiments of the battery device of this utility model, referring to Figures 1-2, both the first frame 21101 and the second frame 21102 are provided with a plurality of through holes 2112.

[0040] In this embodiment, through holes 2112 are used to prevent structural shrinkage during the mold opening of the first frame 21101 and the second frame 21102, and to save on structural materials.

[0041] In some embodiments of the battery device of this utility model, reference is made to... Figures 8 to 10 Both the first frame 21101 and the second frame 21102 are provided with a plurality of battery cell insertion holes 2113. The plurality of battery cell insertion holes 2113 are spaced apart from each other. The openings of the plurality of battery cell insertion holes 2113 are connected to the installation space 2111 for correspondingly embedding and fixing the plurality of battery cell bodies 212. Both the first frame 21101 and the second frame 21102 are provided with a plurality of electrode connection holes 2114; The openings of the plurality of electrode connection holes 2114 of the first frame 21101 are located on the outer wall of the first frame 21101 and are connected one by one to the plurality of battery cell insertion holes 2113 located on the first frame 21101, so as to assist the positive end of the plurality of battery cell bodies 212 in conductive connection to the positive electrode conductive plate 213, wherein the positive electrode conductive plate 213 is fixed to the outer wall of the first frame 21101; The openings of the plurality of electrode connection holes 2114 of the second frame 21102 are located on the outer wall of the second frame 21102 and are connected one by one to the plurality of battery cell insertion holes 2113 located on the second frame 21102, so as to assist the negative end of the plurality of battery cell bodies 212 in conductive connection to the negative electrode conductive plate 214, wherein the negative electrode conductive plate 214 is fixed to the outer wall of the second frame 21102.

[0042] In this embodiment, by utilizing the cell socket 2113, combined with the first frame 21101 and the second frame 21102, the installation stability of the cell body 212 and the mounting bracket 211 is improved, ensuring that the space volume of the second air gap 215 at a local position of the cell module 21 is reduced, thereby avoiding the problem of poor local heat dissipation effect in each cell module 21.

[0043] The positive electrode conductive plate 213 is installed on the outer wall of the first frame 21101, and the negative electrode conductive plate 214 is installed on the outer wall of the second frame 21102. This not only enables the installation and fixation of the positive electrode conductive plate 213 and the negative electrode conductive plate 214, but also facilitates the expansion and connection of other battery cell modules 21.

[0044] In some embodiments of the battery device of this utility model, reference is made to... Figures 6 to 10 Both the outer wall of the first frame 21101 and the outer wall of the second frame 21102 are provided with pole plate inserts 2115; The positive electrode conductive plate 213 is provided with a positive electrode plate through hole (not shown in the figure), and the electrode plate insertion post 2115 of the first frame 21101 is inserted into and connected to the positive electrode plate through hole. The negative electrode conductive plate 214 is provided with a negative electrode plate through hole (not shown in the figure), and the electrode plate insertion post 2115 of the second frame 21102 is inserted into and connected to the negative electrode plate through hole.

[0045] In this embodiment, the positive electrode plate and the negative electrode plate are installed and fixed by using the electrode plate insertion post 2115.

[0046] In some embodiments of the battery device of this utility model, reference is made to... Figures 6 to 10 The battery cell module 21 further includes a connecting card group 216, which includes a snap-fit ​​component 2161 and a mating component 2162. The snap-fit ​​component 2161 is fixed to the first frame 21101, the snap-fit ​​component 2161 is snap-fitted to the mating component 2162, and the mating component 2162 is fixed to the second frame 21102.

[0047] In this embodiment, the installation stability of the multiple battery cell bodies 212 is further improved by using the snap-fit ​​connector 2161 and the mating connector 2162.

[0048] In some embodiments of the battery device of this utility model, reference is made to... Figures 2 to 4 The battery body 20 also includes an adhesive plate (not shown in the figure) and an insulating plate 26. An adhesive plate is provided between the positive electrode conductive plate 213 and the insulating plate 26, and between the negative electrode conductive plate 214 and the insulating plate 26. This prevents short circuits between any two battery cell modules 21.

[0049] In some embodiments of the battery device of this utility model, the battery body 20 further includes a module mounting plate 28. After multiple cell modules 21 in the battery body 20 are stacked and assembled side by side, the mounting bracket 211 of the cell module 21 is fixed on the module mounting plate 28, and the module mounting plate 28 is installed on the base plate 131, thereby completing the installation of the battery body 20 and the base plate 131.

[0050] In some embodiments of the battery device of this utility model, reference is made to... Figures 6 to 7 When the two battery cell modules 21 are stacked and connected, the outer wall of the first frame 21101 is provided with a first suspended top piece 2116, and the outer wall of the second frame 21102 is provided with a second suspended top piece 2117. The first suspended top member 2116 of the first frame 21101 of one of the two stacked battery cell modules 21 is connected to the second suspended top member 2117 of the second frame 21102 of the other battery cell module 21, so that a suspended heat dissipation gap 217 is formed between the two stacked battery cell modules 21.

[0051] In this embodiment, the suspended heat dissipation gap 217 is one of the first air passage gaps 22. The first suspended top piece 2116 and the second suspended top piece 2117 are used to realize the suspended connection between each two battery cell modules 21. Through the suspended heat dissipation gap 217, it is ensured that the air blown in by the heat dissipation device or natural wind can dissipate heat at the connection between each two battery cell modules 21.

[0052] In some embodiments of the battery device of this utility model, reference is made to... Figures 6 to 10 The first suspended top member 2116 is arranged around the periphery of the outer wall of the first frame 21101 to form a first accommodating cavity (not shown in the figure), which is used to accommodate the positive electrode conductive plate 213. The second suspended top member 2117 is arranged around the periphery of the outer wall of the second frame 21102 to form a second accommodating cavity (not shown in the figure), which is used to accommodate the negative electrode conductive plate 214.

[0053] In this embodiment, the installation stability of the positive electrode conductive plate 213 and the negative electrode conductive plate 214 is improved to avoid the problem of poor heat dissipation in local areas caused by the positional displacement of the positive electrode conductive plate 213 and the negative electrode conductive plate 214.

[0054] Further based on this embodiment, the cavity height of the first cavity is greater than the thickness of the positive electrode conductive plate 213, and the cavity height of the second cavity is greater than the thickness of the negative electrode conductive plate 214.

[0055] In some embodiments of the battery device of this utility model, reference is made to... Figures 2 to 4 At least two battery cell modules 21 are provided; when two battery cell modules 21 are stacked and connected, the outer wall of the first frame 21101 is provided with a suspended clip 2118, and the outer wall of the second frame 21102 is provided with a suspended insert 2119. The suspended clip 2118 of the first frame 21101 of one of the two stacked battery cell modules 21 is snapped into the suspended connector 2119 of the second frame 21102 of the other battery cell module 21, so that a suspended heat dissipation gap 217 is formed between the two stacked battery cell modules 21.

[0056] In this embodiment, the suspended clip 2118 and the suspended connector 2119 are used to realize the suspended installation connection between the two battery cell modules 21, so as to ensure that the size of the set area of ​​the suspended heat dissipation gap 217 is not reduced.

[0057] In some embodiments of the battery device of this utility model, reference is made to... Figures 2 to 4 The suspended clamp 2118 is provided with a first screw hole (not shown in the figure), the clamping member 2161 is provided with a second screw hole (not shown in the figure), the mating member 2162 is provided with a third screw hole (not shown in the figure), and the suspended insert member 2119 is provided with a fourth screw hole (not shown in the figure); the first screw hole, the second screw hole, the third screw hole and the fourth screw hole are sequentially connected to each other to insert the screw 27.

[0058] In this embodiment, the first screw hole, the second screw hole, the third screw hole and the fourth screw hole are connected in sequence to form a module through hole 218. By using the module through hole 218 of each stacked battery cell module 21 to pass through and insert the same screw 27, it is convenient to fix two or more stacked battery cell modules 21 at the same time.

[0059] In some embodiments of the battery device of this utility model, reference is made to... Figures 1 to 5 The temperature detection mechanism 40 includes: a cell temperature detection component 41 and an interface temperature detection component 42; The cell temperature detection component 41 is disposed on the surface of the plurality of cell bodies 212 and is communicatively connected to the control module 50; The interface temperature detection component 42 is disposed on the positive electrode conductive plate 213 and the negative electrode conductive plate 214 of the plurality of battery cell modules 21, and is communicatively connected to the control module 50.

[0060] In this embodiment, the temperature of the surface of each cell body 212 is detected by the cell temperature detection component 41; the temperature of the connection end of each cell module 21 is monitored by the interface temperature detection component 42, such as the temperature at the positive electrode connecting plate 213 where other cell modules 21 are connected, the temperature at the positive electrode connecting plate 213 where the total positive terminal 23 of the battery body 20 is connected, the temperature at the negative electrode connecting plate 214 where other cell modules 21 are connected, and the temperature at the negative electrode connecting plate 214 where the total negative terminal 24 of the battery body 20 is connected; and the rotation speed of the exhaust mechanism 30 is adjusted by the control module 50 to facilitate precise heat dissipation of the battery body 20, that is, while ensuring that the battery body 20 is in the optimal heat dissipation state, the operating power consumption of the exhaust mechanism 30 is also saved.

[0061] In some embodiments of the battery device of this utility model, reference is made to... Figures 1 to 2 The outer shell 10 includes: a first end plate 11, a second end plate 12, and a ring plate 13; The air inlet 102 of the housing is located on the first end plate 11; The second end plate 12 is provided with a housing air outlet (not shown in the figure), which is connected to the airflow channel 101 and the air inlet of the exhaust mechanism 30 respectively; The ring plate 13 is provided with the airflow channel 101, and the two ends of the ring plate 13 are respectively fixed around the first end plate 11 and the second end plate 12.

[0062] In this embodiment, the battery body 20 is installed.

[0063] In a further embodiment, the ring plate 13 includes: a bottom plate 131, two side plates 132 and a top plate 133; The battery body 20 is mounted and fixed on the base plate 131; The bottom of the two side plates 132 are respectively fixed to the sides of the two side plates 132 of the base plate 131, one side of the two side plates 132 is respectively fixed to the sides of the two side plates 132 of the first end plate 11, and the other side of the two side plates 132 is respectively fixed to the sides of the two side plates 132 of the second end plate 12. The top of one side plate 132, the top of the first end plate 11, the top of the other side plate 132, and the top of the second end plate 12 are connected in sequence to form an installation opening. The top plate 133 can be detachably covered to close the installation opening, which facilitates subsequent maintenance of the battery body 20 and other electronic components in the airflow channel 101.

[0064] Furthermore based on this embodiment, the first end plate 11 is provided with an auxiliary mounting ear block 14 to facilitate the installation and connection of the battery device with the mounting position.

[0065] In some embodiments of the battery device of this utility model, reference is made to... Figures 1 to 2 The first end plate 11 is provided with a plurality of housing air inlets 102, which are arranged in a matrix.

[0066] In this embodiment, the first end plate 11 is made into a grid-like plate, which increases the input area for air to flow into the airflow channel 101, thereby improving heat dissipation efficiency.

[0067] In other embodiments of the battery device of this utility model, the side plate 132 is also provided with a housing air inlet 102 to further increase the air inlet area.

[0068] In some embodiments of the battery device of this utility model, reference is made to... Figures 1 to 2 The battery device also includes a safety disconnect mechanism 60, which is connected to the main connection terminal of the battery body 20. The control module 50 is also communicatively connected to the safety disconnect mechanism 60 to control the connection of the ventilation mechanism 30.

[0069] In this embodiment, the safety disconnect mechanism 60 is a manual service disconnect module (MSD module). The safety disconnect mechanism 60 is equipped with a safety disconnect mechanism: providing a way to physically disconnect the high-voltage circuit; and an interlock protection mechanism: ensuring that the battery device is safely shut down when disconnected; and can monitor its own temperature to prevent overheating and potential safety risks.

[0070] Specifically, the main connection terminals of the battery body 20 include a main positive terminal 23 and a main negative terminal 24.

[0071] In some embodiments of the battery device of this utility model, the safety disconnect mechanism 60 is provided with a temperature self-detection module, which is used to detect the temperature of the safety disconnect mechanism 60 itself, and the temperature self-detection module is communicatively connected to the control module 50.

[0072] In this embodiment, a temperature self-detection module is used to increase the number of temperature detection points and provide comprehensive temperature data to the control module 50, which facilitates precise control of the rotation speed of the exhaust mechanism 30.

[0073] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A battery device, characterized in that, include: The outer casing is provided with an airflow channel and an air inlet, the air inlet being connected to the air inlet end of the airflow channel; A battery body is disposed within the airflow channel. The battery body includes multiple cell modules. A first air passage gap is provided between adjacent cell modules, and the first air passage gap is connected to the airflow channel. A ventilation mechanism is fixed to the outer casing, and the air inlet of the ventilation mechanism is connected to the air outlet of the airflow channel. The airflow channel is straight, and the air inlet of the exhaust mechanism and the air inlet of the housing are located at both ends of the airflow channel; The battery device also includes: A temperature detection mechanism is disposed on the surface of the plurality of battery cell modules and / or the connection end of the plurality of battery cell modules; A control module, which is communicatively connected to the temperature detection mechanism to control the ventilation mechanism; Each of the battery cell modules includes: Mounting bracket, providing installation space; Multiple battery cell bodies are installed in the installation space. A second air passage gap is provided between adjacent battery cell bodies. The second air passage gap is connected to the airflow channel through the installation space, and the second air passage gap is connected to the installation space along the extension direction of the airflow channel. A positive electrode conductive plate is disposed on the mounting frame and electrically connected to the positive terminal of the plurality of battery cell bodies; A negative electrode conductive plate is disposed on the mounting frame and electrically connected to the negative terminals of the plurality of battery cell bodies.

2. The battery device according to claim 1, characterized in that, The positive electrode plate of each of the battery cell modules is connected to the negative electrode plate of another battery cell module or the total positive terminal of the battery body; The negative electrode plate of each of the battery cell modules is connected to the positive electrode plate of another battery cell module or the total negative terminal of the battery body.

3. The battery device according to claim 2, characterized in that, The temperature detection mechanism includes: A cell temperature detection component is disposed on the surface of the plurality of cell bodies and is communicatively connected to the control module; An interface temperature detection component is disposed on the positive electrode conductive plate and the negative electrode conductive plate of the plurality of battery cell modules, and is communicatively connected to the control module.

4. The battery device according to any one of claims 1-3, characterized in that, The outer casing includes: The first end plate, wherein the air inlet of the housing is located on the first end plate; The second end plate is provided with a housing air outlet, which is connected to the airflow channel and the air inlet of the exhaust mechanism respectively. The ring plate is provided with the airflow channel, and the two ends of the ring plate are respectively fixed around the first end plate and the second end plate.

5. The battery device according to claim 4, characterized in that, The first end plate is provided with a plurality of air inlets for the housing, which are arranged in a matrix.

6. The battery device according to any one of claims 1-3, characterized in that, The battery device also includes a safety disconnect mechanism, which is connected to the main connection terminal of the battery body. The control module is also communicatively connected to the safety disconnect mechanism to control the connection of the ventilation mechanism.

7. The battery device according to claim 6, characterized in that, The safety disconnect mechanism is equipped with a temperature self-detection module, which is used to detect the temperature of the safety disconnect mechanism itself. The temperature self-detection module is communicatively connected to the control module.

8. The battery device according to any one of claims 1-3, characterized in that, The plurality of battery cell modules are stacked and / or arranged side by side, and a first air gap is provided between every two battery cell modules. Each of the cell modules is electrically connected to the main connection terminal of an adjacent cell module or battery body.

Images