Constant-temperature battery system and exercise bicycle

Abstract

The utility model relates to the technical field of electric vehicles, and discloses a constant-temperature battery system and an exercise bicycle, the constant-temperature battery system comprises a tubular shell, a battery module, a heating piece, a protection circuit board and an end plate, the tubular shell is provided with a containing cavity, at least one end of the containing cavity is open, and the battery module is arranged in the containing cavity; the battery module comprises a plurality of battery cell units arranged in the length direction of the tubular shell and a battery support used for supporting the plurality of battery cell units, each battery cell unit comprises at least one cylindrical battery cell, the heating piece is installed on the tubular shell and used for heating the battery module, and the protection circuit board is installed in the containing cavity and electrically connected with the battery module and the heating piece. The end cover is used for sealing the open end of the containing cavity. The constant-temperature battery can ensure that the battery module is kept at a proper temperature in a low-temperature environment, ensures that the battery module can stably output power, and ensures that the endurance time of the exercise bicycle is long.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicles, in particular to a constant temperature battery system and a sports fitness vehicle. Background Art

[0002] The field of sports fitness bikes combines traditional fitness equipment with modern technology, aiming to enhance the user's fitness experience and promote green travel. Some sports fitness models incorporate electric power assist technology, which can provide additional power support when the user pedals, making climbing or long-distance riding easier. Currently available sports fitness bikes usually thicken the downtube of the vehicle body and build the battery system into the downtube. The battery system usually includes multiple brackets and multiple batteries, and the multiple batteries are spliced ​​in sequence through multiple brackets along their length. In order to improve the user experience, the battery system of a sports fitness bike is usually a rechargeable battery. Since the use and storage environment of sports fitness bikes are usually outdoors, and sports fitness bikes are in a low temperature outdoor environment for a long time, on the one hand, the battery capacity will be reduced, resulting in a weakening of the battery power and a reduction in the battery life of the sports fitness bike. On the other hand, too low a temperature may cause battery failure, resulting in the phenomenon of battery failure. Utility Model Content

[0003] The first purpose of the utility model is to provide a constant temperature battery system, which can ensure that the battery module maintains a suitable temperature in a low temperature environment, ensure that the battery module can output power stably, and ensure the endurance of the sports fitness vehicle.

[0004] The second purpose of the utility model is to provide a sports fitness vehicle, which can keep the battery module at a suitable temperature in a low temperature environment, ensure that the battery module can output power stably, and ensure the endurance of the sports fitness vehicle.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] The utility model discloses a constant temperature battery system, comprising: a tubular shell, wherein the tubular shell has a accommodating cavity, wherein at least one end of the accommodating cavity is open; a battery module, wherein the battery module is arranged in the accommodating cavity; and comprises a plurality of battery core units arranged along the length direction of the tubular shell and a battery bracket for supporting the plurality of battery core units, wherein each of the battery core units comprises at least one cylindrical battery core; a heating element, wherein the heating element is installed in the tubular shell and is extended along the length of the tubular shell to heat the battery module; a protection circuit board, wherein the protection circuit board is installed in the accommodating cavity and is electrically connected to the battery module and the heating element, wherein the protection circuit board can detect the temperature of the battery module and control the heating power of the heating element; and an end cover, wherein the end cover is used to seal the open end of the accommodating cavity.

[0007] In some embodiments, there are multiple battery brackets, and at least one placement position is provided on each battery bracket for accommodating the cylindrical battery cells; wherein: both ends of each battery cell unit in the length direction of the tubular housing are provided with the battery brackets.

[0008] In some specific embodiments, among two adjacent battery brackets along the length direction of the tubular housing, one battery bracket is provided with a plug post, and the other battery bracket is provided with a plug hole, and the plug post can be fitted into the plug hole.

[0009] In some specific embodiments, two adjacent battery brackets along the length direction of the tubular housing are connected by a connecting post so that the two battery brackets are spaced apart, and a spraying hole is provided on each placement position; the battery module further includes an explosion-proof member clamped between two adjacent battery brackets, and the explosion-proof member can block two correspondingly arranged spraying holes to prevent substances generated by thermal runaway of the cylindrical battery cells from erupting along the length direction of the tubular housing.

[0010] In some more specific embodiments, the explosion-proof member includes two connecting tiles and an explosion-proof tile, the explosion-proof tile is connected to the junction of the two connecting tiles and is used to block two correspondingly arranged spraying holes, and the two sides of the two connecting tiles facing away from each other are respectively connected to the two battery brackets, and an exhaust hole is provided on each connecting tile.

[0011] In some embodiments, limiting strips are arranged along the length on the inner side wall or the outer side wall of the tubular housing, and the two limiting strips respectively abut against both sides of the heating member.

[0012] In some embodiments, both ends of the accommodating cavity are open, the end cover includes a top cover and a bottom cover, and the top cover is connected to the protection circuit board; a safety valve is provided on the bottom cover.

[0013] In some specific embodiments, a wire clip is provided on the battery bracket for clamping the wire of the battery cell unit, a main wire groove is provided on the top cover for leading out the lead wire of the protection circuit board, and a charging and discharging interface is further provided on the top cover.

[0014] In some embodiments, the constant temperature battery system further includes a heat dissipation member connected to the outer side wall of the tubular housing.

[0015] The present utility model also discloses an exercise bike, including a vehicle body and the constant temperature battery system described above, and the constant temperature battery system is installed inside the vehicle body.

[0016] Advantages of the constant-temperature battery system of the present utility model: Since the battery module includes a plurality of battery cell units arranged along the length direction of the tubular housing, and each battery cell unit includes at least one cylindrical battery cell, the overall length of the battery module is relatively long, but the overall width is small. When used in cooperation with the tubular housing, it can be well applied to existing exercise bikes. Since the housing is provided with a heating element and a protection circuit board, the structure of the protection circuit board has functions of overcharge protection, over-discharge protection, over-current protection and short-circuit protection, ensuring the safety of the battery module during the charging and discharging process. It can also monitor the voltage and current of the battery module, and when used in cooperation with the heating element during the actual working process, it can ensure that the battery module is always at a more suitable temperature, ensuring that the battery module can stably output power and guaranteeing the endurance time of the exercise bike.

[0017] Advantages of the exercise bike of the present utility model: Due to having the constant-temperature battery system described above, this exercise bike can keep the battery module at a suitable temperature in a low-temperature environment, ensuring that the battery module can stably output power and guaranteeing the endurance time of the exercise bike.

[0018] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of the constant-temperature battery system according to Embodiment 1 of the present utility model;

[0020] Figure 2 is a partial structural schematic diagram of the constant-temperature battery system according to Embodiment 1 of the present utility model;

[0021] Figure 3 is an exploded schematic diagram of the constant-temperature battery system according to Embodiment 1 of the present utility model;

[0022] Figure 4 is a schematic diagram of the splicing structure of two battery brackets according to Embodiment 1 of the present utility model;

[0023] Figure 5 is an exploded schematic diagram of two battery brackets according to Embodiment 1 of the present utility model;

[0024] Figure 6 is a schematic diagram of the matching structure of two battery brackets and an explosion-proof part according to Embodiment 2 of the present utility model;

[0025] Figure 7 is a schematic diagram of the splicing structure of two battery brackets according to Embodiment 2 of the present utility model;

[0026] Figure 8 is a schematic diagram of the structure of the explosion-proof part according to Embodiment 2 of the present utility model

[0027] Reference numerals:

[0028] 100, tubular housing; 110, limiting strip;

[0029] 200, battery module; 210, battery cell unit; 220, battery bracket; 221, placement position; 2221, limiting convex edge; 222, injection hole; 223, insertion post; 224, insertion hole; 225, wire clip; 2251, first elastic arm; 2252, second elastic arm; 226, wire clamping space; 227, limiting block; 230, connecting post; 240, explosion-proof part; 241, connecting tile; 2411, annular part; 2412, conical cylinder part; 24121, exhaust hole; 242, explosion-proof tile;

[0030] 300, heating element;

[0031] 400, protection circuit board;

[0032] 500, top cover; 510, main wire groove; 520, charge and discharge interface; 530, wire clamping hole;

[0033] 600, bottom cover; 700, heat dissipation part. Detailed implementation manners

[0034] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that for the convenience of description, only the parts related to the present utility model rather than all the structures are shown in the accompanying drawings.

[0035] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0036] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0037] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of description and simplifying the operation, 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. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0038] Embodiment 1:

[0039] The present utility model discloses a constant temperature battery system. Refer to Figure 1 and Figure 2As shown in the figure, the constant temperature battery system of this embodiment includes a tubular housing 100, a battery module 200, a heating element 300, a protection circuit board 400, and an end plate. The tubular housing 100 has a receiving cavity, and at least one end of the receiving cavity is open. The battery module 200 is arranged in the receiving cavity; and it includes a plurality of battery cell units 210 arranged along the length direction of the tubular housing 100 and a battery bracket 220 for supporting the plurality of battery cell units 210. Each battery cell unit 210 includes at least one cylindrical battery cell. The heating element 300 is installed on the tubular housing 100 and extends along the length of the tubular housing 100 to heat the battery module 200. The protection circuit board 400 is installed in the receiving cavity and is electrically connected to the battery module 200 and the heating element 300. The protection circuit board 400 can detect the temperature of the battery module 200 and control the heating power of the heating element 300. The end cover is used to seal the open end of the receiving cavity. It can be understood that since the battery module 200 includes a plurality of battery cell units 210 arranged along the length direction of the tubular housing 100, and each battery cell unit 210 includes at least one cylindrical battery cell, the length of the entire battery module 200 is relatively long, but the overall width is small. When used in cooperation with the tubular housing 100, it can be well applied to existing exercise bikes. Since the heating element 300 and the protection circuit board 400 are provided on the housing, the structure of the protection circuit board 400 mainly includes a control integrated circuit, a power MOS transistor, a sampling resistor, a charge / discharge control circuit, a fuse, and a temperature sensor probe. It has overcharge protection, over-discharge protection, over-current protection, and short-circuit protection to ensure the safety of the battery module 200 during the charging and discharging process. It can also monitor the voltage and current of the battery module 200. The MOS transistor controls the on / off of the circuit according to the instruction. The sampling resistor is used for current detection. The fuse provides additional safety protection. The temperature sensor probe can monitor the temperature of the battery module 200. During the actual working process, when used in cooperation with the heating element 300, it can ensure that the battery module 200 is always at a more suitable temperature, ensure that the battery module 200 can stably output power, and guarantee the battery life of the exercise bike.

[0040] Reference Figure 4As shown, there are multiple battery brackets 220, and at least one placement position 221 is provided on each battery bracket 220. The placement position 221 is used to accommodate cylindrical battery cells. Battery brackets 220 are provided at both ends of each battery cell unit 210 along the length direction of the tubular housing 100. It can be understood that since the constant temperature battery system disclosed in this embodiment is used for an exercise bike, and the inner diameter of the tube on the vehicle body of the exercise bike is limited, battery brackets 220 are provided at both ends of each battery cell unit 210 along the length direction of the tubular housing 100. In this way, while ensuring the stable splicing of multiple battery cell units 210, the width dimension of the entire battery module 200 will not be increased, which is conducive to using the constant temperature battery system of this embodiment in the exercise bike. In this embodiment, the number of battery cell units 210 is five, each battery bracket 220 has four placement positions 221, and the number of battery brackets 220 is ten. A battery bracket 220 is provided at both ends of each battery cell unit 210. Of course, in other embodiments of the present invention, the number of battery cell units 210, battery brackets 220, and cylindrical battery cells on each battery cell unit 210 can all be selected according to actual needs, and is not limited to the numbers in this embodiment.

[0041] Optionally, the placement position 221 is formed as a through hole, and a limiting convex edge 2221 for supporting the cylindrical battery cell is provided on the hole wall. It can be understood that during the actual assembly process, the cylindrical battery cell is inserted into the through hole and then abutted against the limiting convex edge 2221 to complete the assembly of the cylindrical battery cell and the battery bracket 220. The assembly is very convenient and can improve the stability of the cylindrical battery cell.

[0042] Optionally, among two adjacent battery brackets 220 along the length direction of the tubular housing 100, a plug post 223 is provided on one battery bracket 220, and a plug hole 224 is provided on the other battery bracket 220. The plug post 223 can be fitted into the plug hole 224. It can be understood that during the actual assembly process, the two battery brackets 220 are respectively installed at both ends of the battery cell unit 210 to assemble a unit body. Multiple unit bodies can be connected into one body through the cooperation of the plug hole 224 and the plug post 223, thereby completing the assembly of the entire battery module 200. This connection method simplifies the connection between multiple battery cell units 210 on the one hand, is convenient for assembly, and on the other hand can ensure the connection stability between multiple battery cell units 210, so as to conveniently install the entire battery module 200 into the tubular housing 100.

[0043] Reference Figure 2As shown, a limiting strip 110 is arranged along the length on the inner or outer wall of the tubular housing 100, and the two limiting strips 110 respectively abut against both sides of the heating element 300. It can be understood that in this embodiment, the heating element 300 can be arranged on the inner wall or the outer wall of the tubular housing 100. The limiting strip 110 can limit the heating element 300 to avoid unnecessary displacement, so as to ensure that the heating element 300 can stably heat the battery module 200. In order to improve the heating efficiency and connection stability of the heating element 300, the heating element 300 can also be adhered to the inner wall or the outer wall of the tubular housing 100 through heat-conducting glue.

[0044] Reference Figure 1 As shown, both ends of the accommodation cavity are open. The end cover includes a top cover 500 and a bottom cover 600. The top cover 500 is connected to the protection circuit board 400; a safety valve is provided on the bottom cover 600. It can be understood that a safety valve is provided on the bottom cover 600. When the internal pressure of the tubular housing 100 reaches a predetermined threshold, the safety valve will automatically open to release the excess gas, and then automatically reset or remain open to avoid further pressure accumulation.

[0045] A wire clip 225 is provided on the battery bracket 220. The wire clip 225 is used for clamping the wire of the battery cell unit 210. A main wire groove 510 is provided on the top cover 500. The main wire groove 510 is used for leading out the lead wire of the protection circuit board 400. A charging and discharging interface 520 and a wire clamping hole 530 are also provided on the top cover 500. It can be understood that a wire clip 225 is provided on the battery bracket 220. The wire clip 225 is used for clamping the wire of the battery cell unit 210. The wire clip 225 can fix the wire of the battery cell unit 210 at a fixed position of the tubular housing 100, so as to avoid faults caused by chaotic wiring inside the tubular housing 100. The main wire groove 510 facilitates the leading out of the lead wire of the protection circuit board 400, so as to facilitate the connection of the constant temperature battery system as a power source to the electrical appliances that require electric energy in the exercise bike. The charging and discharging structure facilitates the charging and discharging of the battery module 200, thereby improving user satisfaction. When the heating element 300 is installed on the outer wall of the tubular housing 100, the wire clamping hole 530 is provided on the top cover 500 to facilitate the introduction of the lead wire of the heating element 300 into the installation cavity, which is convenient for the heating element 300 to be connected to the protection circuit board 400.

[0046] Optionally, as Figure 5As shown in the figure, the wire clip 225 includes a first elastic arm 2251 and a second elastic arm 2252 disposed on the outer peripheral wall of the battery bracket 220. At least one of the first elastic arm 2251 and the second elastic arm 2252 is an elastic hook: the first elastic arm 2251, the second elastic arm 2252, and the outer peripheral wall of the battery bracket 220 together enclose a wire clamping space 226 for clamping a wire. It can be understood that during the actual working process, only the wire clip 225 needs to be inserted into the wire clamping space 226, and the first elastic arm 2251 and the second elastic arm 2252 can automatically rebound after the wire clamping is completed, so that the wire can be constrained in the wire clamping space 226, thereby ensuring that the wire remains in a fixed position and avoiding the phenomenon of wire entanglement or being damaged by foreign objects, which is beneficial to improving the working reliability of the battery module 200.

[0047] Reference Figure 1 As shown in the figure, the constant temperature battery system further includes a heat dissipation member 700, and the heat dissipation member 700 is connected to the outer side wall of the tubular housing 100. It can be understood that during the actual working process, the battery module 200 will generate heat when it is working normally. The added heat dissipation member 700 can quickly dissipate the heat of the battery module 200 to the vehicle body, thereby avoiding the phenomenon of overheating of the constant temperature battery system.

[0048] Embodiment Two:

[0049] The constant temperature battery system of this embodiment is basically the same as that of Embodiment One, except that the structure of the battery bracket 220 in this embodiment is different.

[0050] Reference Figure 6 and Figure 7 As shown in the figure, two adjacent battery brackets 220 along the length direction of the tubular housing 100 are connected by a connecting column 230, so that the two battery brackets 220 are arranged at intervals, and the placement position 221 is formed as a limiting groove, and a spray hole 222 is provided on the bottom wall of the limiting groove; the battery module 200 further includes an explosion-proof member 240 clamped between two adjacent battery brackets 220, and the explosion-proof member 240 can block two correspondingly arranged spray holes 222 to prevent the substances generated by the thermal runaway of the cylindrical battery cells from erupting along the length direction of the tubular housing 100. It can be understood that when one of the cylindrical battery cells has a thermal runaway, the substances generated by the thermal runaway are blocked by the explosion-proof member 240 after passing through the spray hole 222, avoiding affecting other cylindrical battery cells. Thus, the explosion-proof member 240 can prevent the substances ejected by the thermal runaway of the cylindrical battery cells from affecting other intact cylindrical battery cells along the length direction of the cylindrical battery cells, which is beneficial to improving the safety performance of the battery module 200.

[0051] Optionally, two battery holders 220 and a connecting post 230 adjacent to each other along the length of the tubular housing 100 are integrally formed. Thus, the two battery holders 220 and the connecting post 230 are of an integral structure, which is convenient for processing and assembly. Of course, in other embodiments of the present invention, the two battery holders 220 and the connecting post 230 may also be of a split structure, and the two battery holders 220 and the connecting post 230 can be connected by means such as plugging, snap connection, or connection by a connecting member.

[0052] Further, as Figure 8 shown, the explosion-proof member 240 includes two connecting tiles 241 and an explosion-proof tile 242. The explosion-proof tile 242 is connected to the junction of the two connecting tiles 241 and is used to block two correspondingly arranged injection holes 222. The two sides of the two connecting tiles 241 facing away from each other are respectively connected to the two battery holders 220, and each connecting tile 241 is provided with an exhaust hole 24121. It can be understood that by connecting the connecting tiles 241 to the two battery holders 220, it can ensure that the explosion-proof member 240 is stably installed between the two battery holders 220. During actual operation, the substances ejected by the thermal runaway of the cylindrical battery cell can be blocked by the explosion-proof tile 242 after passing through the injection holes 222, and after being blocked, they can diffuse radially along the explosion-proof tile 242 and finally be discharged from the exhaust holes 24121 on the connecting tiles 241. Thus, it can be avoided that the substances ejected by the thermal runaway of the battery affect other intact cylindrical battery cells along the length direction of the cylindrical battery cell, which is beneficial to improving the safety performance of the battery module 200. It should be added that in the embodiments of the present invention, both the connecting tiles 241 and the explosion-proof tile 242 are made of materials with high temperature resistance and corrosion resistance, such as ceramics, etc., so as to improve the explosion-proof performance.

[0053] Optionally, there are multiple exhaust holes 24121, and the multiple exhaust holes 24121 are arranged at intervals along the circumferential direction of the explosion-proof tile 242. It can be understood that during actual operation, the substances ejected by the thermal runaway of the cylindrical battery cell can be blocked by the explosion-proof tile 242 after passing through the injection holes 222, and after being blocked, they can diffuse radially along the explosion-proof tile 242 and then be discharged from the multiple exhaust holes 24121. The multiple exhaust holes 24121 are beneficial to improving the discharge speed of the substances ejected by the thermal runaway of the cylindrical battery cell, thereby reducing the influence of the thermal runaway of the cylindrical battery cell and being beneficial to extending the service life of the cylindrical battery cell module. It should be added that in the embodiments of the present invention, the exhaust holes 24121 can be round holes, square holes or other shaped holes, and the shape, quantity and arrangement mode of the exhaust holes 24121 can all be selected according to actual needs.

[0054] Optionally, each connecting tile 241 includes a connected annular portion 2411 and a tapered cylinder portion 2412. The annular portion 2411 is connected to the large end of the tapered cylinder portion 2412. The small ends of the tapered cylinder portions 2412 of the two connecting tiles 241 are connected, and the explosion-proof tile 242 is located at the connection of the small ends of the two tapered cylinder portions 2412. It can be understood that the annular portion 2411 can ensure the connection stability between the connecting tile 241 and the battery bracket 220, thereby ensuring the connection stability between the explosion-proof member 240 and the battery bracket 220. The tapered cylinder portion 2412 can guide the substances generated by the thermal runaway of the cylindrical battery cell, so that they can be discharged smoothly from the exhaust hole 24121, thereby ensuring the explosion-proof effect of the explosion-proof member 240.

[0055] Optionally, a limiting block 227 is provided on the battery bracket 220, and the limiting block 227 can abut against the outer peripheral wall of the annular portion 2411. Since both ends of the explosion-proof member 240 abut against the two battery brackets 220 respectively, setting the limiting block 227 on the battery bracket 220 can prevent the explosion-proof member 240 from slipping out between the two battery brackets 220. There is no need to use a buckle structure or a connecting member to connect the explosion-proof member 240 and the battery bracket 220, which simplifies the connection form between the explosion-proof member 240 and the battery bracket 220 and facilitates the installation and disassembly of the explosion-proof member 240. Further, there are multiple limiting blocks 227, and the multiple limiting blocks 227 are arranged at intervals along the circumferential direction of the explosion-proof member 240. The multiple limiting blocks 227 can enhance the limiting effect on the explosion-proof member 240, thereby further preventing the explosion-proof member 240 from slipping out of the battery bracket 220. It should be added that the shape and number of the limiting blocks 227 can be selected according to actual needs. It should be additionally noted here that the annular portion 2411 can also be connected to the battery bracket 220 by means of bonding, snap connection or connecting member connection, etc., and is not limited to the limiting connection method of the above-mentioned limiting block 227.

[0056] It should be additionally noted that in other embodiments of the present invention, the explosion-proof member 240 can be formed as a complete component, and each explosion-proof member 240 includes multiple explosion-proof units, and each explosion-proof unit is used to block two correspondingly arranged injection holes 222, and is not limited to the solution in which multiple explosion-proof members 240 are independently arranged in this embodiment.

[0057] Embodiment Three:

[0058] The present invention also discloses an exercise bike, including a vehicle body and the aforementioned constant temperature battery system, and the constant temperature battery system is installed inside the vehicle body. Due to the aforementioned constant temperature battery system, the exercise bike can keep the battery module 200 at an appropriate temperature in a low-temperature environment, ensure that the battery module 200 can stably output power, and ensure the battery life of the exercise bike.

[0059] In the description of this specification, the descriptions referring to terms such as "some embodiments", "other embodiments", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0060] Obviously, the above embodiments of the present utility model are merely examples given for clearly illustrating the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present utility model. It is not necessary and impossible to enumerate all implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. A constant-temperature battery system, characterized in that, Comprising: A tubular housing (100) having a receiving cavity, at least one end of the receiving cavity being open; A battery module (200) disposed in the receiving cavity; and including a plurality of battery cell units (210) arranged along the length direction of the tubular housing (100) and a battery support (220) for supporting the plurality of battery cell units (210), each battery cell unit (210) including at least one cylindrical battery cell; A heating element (300) mounted on the tubular housing (100) and extending along the length of the tubular housing (100) to heat the battery module (200); A protection circuit board (400) mounted in the receiving cavity and electrically connected to the battery module (200) and the heating element (300), the protection circuit board (400) being capable of detecting the temperature of the battery module (200) and controlling the heating power of the heating element (300); An end cap for sealing the open end of the receiving cavity.

2. The constant temperature battery system according to claim 1, wherein There are a plurality of the battery supports (220), and at least one placement position (221) is provided on each battery support (220) for receiving the cylindrical battery cell; wherein: the battery supports (220) are provided at both ends of each battery cell unit (210) along the length direction of the tubular housing (100).

3. The constant temperature battery system according to claim 2, characterized in that, Among two adjacent battery supports (220) along the length direction of the tubular housing (100), one battery support (220) is provided with a plug post (223), and the other battery support (220) is provided with a plug hole (224), and the plug post (223) can be fitted into the plug hole (224).

4. The constant temperature battery system according to claim 3, characterized in that, Two adjacent battery supports (220) along the length direction of the tubular housing (100) are connected by a connecting post (230) so that the two battery supports (220) are spaced apart, and a jet hole (222) is provided on each placement position (221); the battery module (200) further includes an explosion-proof member (240) sandwiched between two adjacent battery supports (220), and the explosion-proof member (240) can block two corresponding jet holes (222) to prevent substances generated by thermal runaway of the cylindrical battery cell from erupting along the length direction of the tubular housing (100).

5. The constant temperature battery system according to claim 4, characterized in that, The explosion-proof member (240) includes two connecting tiles (241) and an explosion-proof tile (242), the explosion-proof tile (242) is connected to the junction of the two connecting tiles (241) and is used to block two corresponding jet holes (222), and the sides of the two connecting tiles (241) facing away from each other are respectively connected to the two battery supports (220), and an exhaust hole (24121) is provided on each connecting tile (241).

6. The constant temperature battery system according to claim 1, wherein, A limiting strip (110) is arranged on the inner or outer side wall of the tubular housing (100) and extends along its length, and the two limiting strips (110) respectively abut against both sides of the heating element (300).

7. The constant-temperature battery system according to claim 1, wherein Both ends of the accommodating cavity are open, the end cover includes a top cover (500) and a bottom cover (600), and the top cover (500) is connected to the protection circuit board (400); a safety valve is provided on the bottom cover (600).

8. The constant-temperature battery system according to claim 7, characterized in that, A wire clip (225) is provided on the battery bracket (220), the wire clip (225) is used for clamping the wire of the battery cell unit (210), a main wire groove (510) is provided on the top cover (500), the main wire groove (510) is used for leading out the lead wire of the protection circuit board (400), and a charging and discharging interface (520) is further provided on the top cover (500).

9. The constant temperature battery system according to claim 1, wherein The constant temperature battery system further includes a heat dissipation member (700), and the heat dissipation member (700) is connected to the outer side wall of the tubular housing (100).

10. An exercise bike, characterized in that, It includes a vehicle body and the constant temperature battery system according to any one of claims 1-9, and the constant temperature battery system is installed inside the vehicle body.

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