Battery system

Abstract

The utility model discloses a battery system, which comprises a box body, a plurality of sub power supply modules arranged in the box body and electrically connected in series, a guide rail arranged on the box body, a control module capable of sliding along the guide rail, and paired tentacles connected with the control module and moving along with the control module, and the tentacles are used for electrically connecting the two sub power supply modules in the on state in series or short-circuiting the sub power supply modules in the open state. When one or more sub power supply modules are in an open-circuit state, the tentacles can move to the sub power supply modules in the open-circuit state or near the sub power supply modules along with the control module, and two sub power supply modules in the closed-circuit state are connected in series or the sub power supply modules in the open-circuit state are short-circuited by means of the tentacles. Therefore, the power supply path in the battery system is in a closed state, the power supply performance is recovered, the whole battery system does not need to be replaced by a new battery system, and the maintenance cost can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and specifically to a battery system. Background Technology

[0002] Lithium-ion batteries are widely used due to their advantages such as good rate performance, high safety, large capacity, long cycle life, and environmental friendliness, especially in the power and energy storage fields, where highly integrated lithium-ion battery packs have attracted widespread attention. However, whether in the process of integrating individual battery cells into the battery pack or in the process of paralleling battery packs, there is a possibility that a failure in a single battery cell or battery pack in the series connection can render the entire battery pack and battery system unusable. When a battery becomes unusable due to a failure, the current after-sales maintenance method is to directly replace the battery pack or battery system, which results in high maintenance costs.

[0003] Given the above shortcomings, it is necessary to design a battery system. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is that the maintenance cost of existing battery systems is high, thereby providing a battery system.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0006] A battery system includes a housing, a plurality of sub-power supply modules installed in the housing and electrically connected in series, a guide rail installed on the housing, a control module that can slide along the guide rail, and a pair of tentacles connected to the control module and moving with the control module. The tentacles are used to electrically connect two of the sub-power supply modules in a closed circuit state or to short-circuit the sub-power supply modules in an open circuit state.

[0007] Furthermore, it also includes a battery management system electrically connected to the control module. The plurality of sub-power supply modules are respectively electrically connected to the battery management system. The battery management system can receive an open-circuit signal from the sub-power supply module and control the control module to move to the position of the sub-power supply module in the open-circuit state according to the open-circuit signal. It also controls the tentacles to electrically connect two sub-power supply modules in the closed-circuit state adjacent to the sub-power supply module in the open-circuit state, or controls the tentacles to short-circuit the sub-power supply module in the open-circuit state.

[0008] Furthermore, the control module integrates a positioning element for locating the position of the control module.

[0009] Furthermore, the positioning element is a reader, and the sub-power supply module is provided with a location code. The reader reads the location code and transmits the reading result to the battery management system to locate the position of the control module.

[0010] Furthermore, the sub-power supply module is the battery cell, the housing is the battery pack housing that houses the battery cell, the guide rail is the battery pack guide rail mounted on the battery pack housing, the control module is the battery pack control module connected to the battery pack guide rail, the handle is the battery pack handle connected to the battery pack control module, and the battery management system is a slave battery management system electrically connected to the battery pack control module.

[0011] Furthermore, the sub-power supply module is the battery pack, the housing is a system housing that accommodates multiple battery packs, the guide rail is a system guide rail mounted on the system housing, the control module is a system control module connected to the system guide rail, the tentacle is a system tentacle connected to the system control module, the battery management system is a main battery management system, and the main battery management system is electrically connected to the system control module.

[0012] Furthermore, multiple pairs of tentacles are connected to one of the control modules.

[0013] Furthermore, the tentacle is detachably connected to the control module, and when the tentacle is detached from the control module, it is used to short-circuit the sub-power supply module which is in an open circuit state.

[0014] Furthermore, the tentacles can be retractable or non-retractable.

[0015] The technical solution of this utility model has the following advantages:

[0016] 1. The battery system provided by this utility model has a guide rail on the housing, and the control module can move along the guide rail. The tentacles can also move with the control module. Therefore, when one or more sub-power supply modules are in an open circuit state, the tentacles can follow the control module to the sub-power supply module in the open circuit state or to the vicinity of the sub-power supply module. By using the tentacles, two sub-power supply modules in the circuit state can be connected in series or the sub-power supply modules in the open circuit state can be shorted, so that the power supply path inside the battery system is in a circuit state, restoring its power supply performance without having to replace the entire battery system, thereby reducing maintenance costs.

[0017] 2. The battery system provided by this utility model has a positioning element integrated on the control module for positioning the control module, which can ensure that the control module moves to a preset position to facilitate the connection between the tentacle and the sub-power supply module.

[0018] 3. The battery system provided by this utility model has a contact that can be detachably connected to the control module. When the contact is detached from the control module, it is used to short-circuit the sub-power supply module that is in an open circuit state. In this way, multiple open circuit sub-power supply modules can be short-circuited without affecting each other by detaching multiple pairs of contacts.

[0019] A battery system includes a housing, two sub-power supply modules installed in the housing and electrically connected in series, a guide rail installed on the housing, a control module that can slide along the guide rail, and a pair of tentacles connected to the control module and moving with the control module, the tentacles being used to short-circuit the sub-power supply modules that are in an open circuit state.

[0020] The technical solution of this utility model has the following advantages:

[0021] The battery system provided by this utility model has a guide rail on the housing, and the control module can move along the guide rail. The tentacles can also move with the control module. Therefore, when a sub-power supply module is in an open circuit state, the tentacles can follow the control module to the sub-power supply module in the open circuit state and short-circuit the sub-power supply module in the open circuit state with the help of the tentacles, so that the power supply path inside the battery system is in a closed circuit state, restoring its power supply performance without having to replace the entire battery system, thereby reducing maintenance costs. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a perspective view of the battery pack in an embodiment of the present utility model;

[0024] Figure 2 This is a three-dimensional schematic diagram of two battery cells connected in a conductive state via a touch in an embodiment of this utility model;

[0025] Figure 3 This is a three-dimensional schematic diagram of two battery cells in a conductive state with the touch short-circuited in an embodiment of this utility model;

[0026] Figure 4 This is a three-dimensional schematic diagram of two contacts short-circuiting a faulty battery cell in an embodiment of this utility model.

[0027] Figure 5 This is a three-dimensional schematic diagram of the battery system in an embodiment of the present invention;

[0028] Figure 6 This is a three-dimensional schematic diagram of two battery packs connected in series in a conductive state via a tenon in an embodiment of this utility model;

[0029] Figure 7 This is a three-dimensional schematic diagram of the battery pack with the touch shorted in an open circuit state in an embodiment of this utility model;

[0030] Figure 8 This is a three-dimensional schematic diagram of a faulty battery pack with two contacts shorted by the two contacts in an embodiment of this utility model.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Battery pack; 11. Battery pack housing; 111. Right side panel; 112. Front panel; 113. Rear panel; 114. Base plate; 12. Individual battery cell; 13. Battery pack guide rail; 14. Battery pack control module; 15. Battery pack handle; 16. Insulating sheet; 17. Palladium sheet;

[0033] 2. Battery system; 20. Communication interface; 21. System housing; 23. System guide rail; 24. System control module; 25. System tentacles;

[0034] A. Communication line; B. High voltage box. Detailed Implementation

[0035] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0036] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0039] Example 1

[0040] First, let's clarify a few concepts. The battery system 2 includes multiple battery packs 1 that are electrically connected in series, and each battery pack 1 includes multiple battery cells 12 that are electrically connected in series.

[0041] like Figures 1 to 8 As shown, this utility model provides a battery system, which includes a housing, multiple sub-power supply modules installed in the housing and electrically connected together, a guide rail installed on the housing, a control module that can slide along the guide rail, and a pair of tentacles connected to the control module and moving with the control module. The tentacles are used to electrically connect two sub-power supply modules in a closed circuit state or to short-circuit a sub-power supply module in an open circuit state.

[0042] In this embodiment, since the housing is equipped with a guide rail, the control module can move along the guide rail, and the tentacles can also move with the control module. Therefore, when one or more sub-power supply modules are in an open circuit state, the tentacles can follow the control module to move to the sub-power supply module in the open circuit state or to the vicinity of the sub-power supply module. By using the tentacles, two sub-power supply modules in the circuit state can be connected in series or the sub-power supply modules in the open circuit state can be shorted, so that the power supply path inside the battery system is in the circuit state, restoring its power supply performance without having to replace the entire battery system, thereby reducing maintenance costs.

[0043] Furthermore, it also includes a battery management system electrically connected to the control module. Multiple sub-power supply modules are electrically connected to the battery management system. The battery management system can receive open-circuit signals from the sub-power supply modules and, based on the open-circuit signals, control the control module to move to the location of the sub-power supply module in the open-circuit state, and control the tentacles to electrically connect two adjacent sub-power supply modules in the closed-circuit state to each other, or control the tentacles to short-circuit the sub-power supply module in the open-circuit state.

[0044] Furthermore, the control module integrates a positioning element for locating the position of the control module.

[0045] In this embodiment, the positioning element is a reader (specifically an infrared scanner, but it can also be a radio frequency identification element), and the sub-power supply module is provided with a location code (specifically a barcode, but it can also be a QR code). The reader reads the location code on the sub-power supply module and transmits the reading result to the battery management system to locate the position of the control module.

[0046] Furthermore, the contacts in the battery system are detachably connected to the control module. The contacts detach from the control module to short-circuit the sub-power supply modules that are in an open-circuit state. The detachable connection between the contacts and the control module is prior art and will not be elaborated upon here. By detachably connecting the contacts in the battery system to the control module, multiple pairs of contacts can be detached to achieve short-circuiting of the open-circuit sub-power supply modules without affecting each other. Moreover, a control module can be connected to one, two, or even multiple pairs of contacts.

[0047] Furthermore, the tentacles are retractable, and the control module can control the extension distance of the tentacles as needed. This is existing technology and will not be elaborated here. Of course, the tentacles can also be non-retractable. When not in use, the tentacles are located above the control module. When needed, the control module controls the tentacles to swing downwards by 180 degrees, so that the tentacles are located below the control module, so that the tentacles can connect to the positive and negative terminals on the corresponding sub-power supply module.

[0048] Furthermore, such as Figures 1 to 4 As shown, the sub-power supply module is a battery cell 12, and the housing is a battery pack housing 11 that houses the battery cell 12. The battery pack housing 11 has a cuboid structure and includes a front end plate 112 and a rear end plate 113, a left side plate (not shown) and a right side plate 111, and a top plate (not shown) and a bottom plate 114 arranged opposite to each other. A battery pack guide rail 13 is provided on the top plate, and an insulating sheet 16 is provided between the battery cell 12 and the left and right side plates 111. The guide rail is the battery pack guide rail 13 mounted on the battery pack housing 11, and the control module is the battery pack control module 14 connected to the battery pack guide rail 13. The contacts are battery pack contacts 15 connected to the battery pack control module 14. The corresponding battery management system is a slave battery management system, which is electrically connected to the battery pack control module and connected to the main battery management system described below. When a battery cell 12 within battery pack 1 triggers its protection due to thermal runaway or other reasons, the fuse inside battery cell 12 will blow, putting battery cell 12 into an open-circuit state. The power supply for battery pack control module 14 can be set independently or drawn from high-voltage box B.

[0049] Furthermore, such as Figures 5 to 8As shown, the sub-power supply module is battery pack 1, the housing is a system housing 21 that houses multiple battery packs 1, the system housing 21 has a cuboid structure, the guide rail is a system guide rail 23 mounted on the system housing 21, and the control module is a system control module 24 connected to the system guide rail 23. The contact is a system contact 25 connected to the system control module 24. The corresponding battery management system is the main battery management system, which is electrically connected to the system control module. The main battery management system is connected to the communication interface 20 on the high-voltage box B (e.g., ...) via communication line A. Figure 7 (As shown) Communication connection; of course, the main battery management system can also be integrated with the high-voltage box B. When battery pack 1 is in an open-circuit state, it may be due to a fault in battery pack 1 itself, or it may be due to a change in application requirements that causes the circuit breaker of battery pack 1 to open through control of the battery management system. The power supply of the system control module 24 can be set separately, or it can be drawn from the high-voltage box B.

[0050] The following section uses the sub-power supply module as an example to introduce the maintenance process of the battery system:

[0051] For ease of explanation, Figure 2 From a perspective, from left to right, the battery cells are sequentially defined as the first battery cell, the second battery cell, the third battery cell, ..., the Nth battery cell. Due to thermal runaway, the third battery cell triggers battery cell protection, and the fuse inside the third battery cell blows, putting the third battery cell in an open circuit state. At this time, the battery management system collects the open circuit signal of the third battery cell and controls the battery pack control module 14 to move along the battery pack guide rail 13 to the position of the third battery cell. The battery pack control module 14 controls the retractable battery pack tentacles 15 to extend and electrically connect the palladium plate 17 corresponding to the negative electrode of the second battery cell and the palladium plate 17 corresponding to the positive electrode of the fourth battery cell together, so that the battery pack 1 can continue to supply power. Specifically, during the movement of the battery pack control module 14, the infrared scanner integrated on the battery pack control module 14 reads the barcode on the top or side of each battery cell 12 and transmits the reading result to the battery management system to locate the position of the battery pack control module 14, ensuring that the battery pack control module 14 can move to the position of the battery cell 12 in the open circuit state.

[0052] For ease of explanation, Figure 3 From a perspective, from left to right, the battery cells are defined as the first battery cell, the second battery cell, the third battery cell, ..., the Nth battery cell. When all four battery cells from the third to the fourth battery cell fail, the battery pack control module 14 controls the battery pack contact 15 to trip, and the battery pack contact 15 short-circuits the faulty third to fourth battery cells.

[0053] exist Figure 4From a visual perspective, a battery pack control module 14 has two pairs of battery pack tentacles 15, but more are also possible. When a pair of battery pack tentacles 15 (such as...) Figure 4 When the solid line in the diagram (as shown) has been used to short-circuit the third battery cell which is in an open circuit state, and the fifth battery cell fails, another pair of battery pack contacts 15 (as shown) can be used to short-circuit it. Figure 4 (As shown by the dashed line in the diagram) Short-circuit the fifth battery cell.

[0054] The following section uses the sub-power supply module as an example to introduce the battery system maintenance process:

[0055] For ease of explanation, Figure 6 From a top-down perspective, the battery packs are sequentially defined as the first battery pack, the second battery pack, the third battery pack, ..., the Nth battery pack. When the second battery pack fails, the system control module 24, under the control of the main battery management system, moves to the location of the second battery pack. The retractable system tentacle 25 electrically connects the positive terminal of the first battery pack and the negative terminal of the third battery pack in series, ensuring a continuous power supply path. Specifically, the infrared scanner integrated on the system control module 24 reads the barcode on the top or side of the battery pack 1 and transmits the reading result to the main battery management system to locate the position of the system control module 24, ensuring that the system control module 24 can move to the location of the battery pack 1 in an open-circuit state. Of course, it is also possible to disconnect the fuses of one or more battery packs 1 as needed, putting the corresponding battery pack 1 in an open-circuit state, so as to flexibly control the number of battery packs 1 in the battery system 2, thereby achieving linkage with different applications on the AC side, maximizing resource utilization, and having certain economic value.

[0056] For ease of explanation, Figure 7 From a top-down perspective, the battery packs are sequentially defined as the first battery pack, the second battery pack, the third battery pack, ..., the Nth battery pack. When the second battery pack and the third battery pack malfunction, the system control module 24 controls the system contact 25 to trip, and the system contact 25 short-circuits the second battery pack and the third battery pack.

[0057] For ease of explanation, Figure 8 From a top-down perspective, the battery packs are sequentially defined as the first battery pack, the second battery pack, the third battery pack, ..., the Nth battery pack. A system control module 24 is connected to two pairs of system tentacles 25, or more pairs. When a pair of system tentacles 25 (e.g....) Figure 8 (As shown by the solid line in the image) is used to short-circuit the second battery pack. If the fourth battery pack fails, another pair of system contacts 25 (as shown in the image) will also be used. Figure 8 (As shown by the dotted line in the diagram) The fourth battery pack can be shorted.

[0058] Example 2

[0059] This embodiment provides a battery system, which includes a housing, two sub-power supply modules installed in the housing and electrically connected together, a guide rail installed on the housing, a control module that can slide along the guide rail, and a pair of tentacles connected to the control module and moving with the control module. The tentacles are used to short-circuit the sub-power supply modules that are in an open circuit state.

[0060] In this embodiment, since the box is equipped with a guide rail, the control module can move along the guide rail, and the tentacles can also move with the control module. Therefore, when a certain sub-power supply module is in an open circuit state, the tentacles can follow the control module to move to the sub-power supply module in the open circuit state, and use the tentacles to short-circuit the sub-power supply module in the open circuit state, so that the power supply path inside the battery system is in a closed circuit state, restoring its power supply performance, without having to replace the entire battery system, thereby reducing maintenance costs.

[0061] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A battery system, characterized in that, The battery system includes a housing, multiple sub-power supply modules installed in the housing and electrically connected together, a guide rail installed on the housing, a control module that can slide along the guide rail, and a pair of tentacles connected to the control module and moving with the control module. The tentacles are used to electrically connect two of the sub-power supply modules in a closed circuit state or to short-circuit the sub-power supply modules in an open circuit state.

2. The battery system according to claim 1, characterized in that, It also includes a battery management system electrically connected to the control module. The plurality of sub-power supply modules are respectively electrically connected to the battery management system. The battery management system can receive an open-circuit signal from the sub-power supply module and control the control module to move to the location of the sub-power supply module in the open-circuit state according to the open-circuit signal. It also controls the tentacles to electrically connect two sub-power supply modules in the closed-circuit state adjacent to the sub-power supply module in the open-circuit state, or controls the tentacles to short-circuit the sub-power supply module in the open-circuit state.

3. The battery system according to claim 2, characterized in that, The control module integrates a positioning element for locating the position of the control module.

4. The battery system according to claim 3, characterized in that, The positioning element is a reader. The sub-power supply module is equipped with a location code. The reader reads the location code and transmits the reading result to the battery management system to locate the position of the control module.

5. The battery system according to claim 2, characterized in that, The sub-power supply module is a battery cell (12), the box is a battery pack box (11) that houses the battery cell (12), the guide rail is a battery pack guide rail (13) mounted on the battery pack box (11), the control module is a battery pack control module (14) connected to the battery pack guide rail (13), the tentacles are battery pack tentacles (15) connected to the battery pack control module (14), the battery management system is a slave battery management system, and the slave battery management system is electrically connected to the battery pack control module (14).

6. The battery system according to claim 2, characterized in that, The sub-power supply module is a battery pack (1), the box is a system box (21) that accommodates multiple battery packs (1), the guide rail is a system guide rail (23) mounted on the system box (21), the control module is a system control module (24) connected to the system guide rail (23), the tentacles are system tentacles (25) connected to the system control module (24), the battery management system is a main battery management system, and the main battery management system is electrically connected to the system control module.

7. The battery system according to claim 1, characterized in that, Multiple pairs of tentacles are connected to one of the control modules.

8. The battery system according to claim 1, characterized in that, The tentacles are detachably connected to the control module, and when detached from the control module, they are used to short-circuit the sub-power supply module which is in an open-circuit state.

9. The battery system according to claim 1, characterized in that, The tentacles can be retractable or non-retractable.

10. A battery system, characterized in that, The battery system includes a housing, two sub-power supply modules installed inside the housing and electrically connected together, a guide rail installed on the housing, a control module that can slide along the guide rail, and a pair of tentacles connected to the control module and moving with the control module. The tentacles are used to short-circuit the sub-power supply modules that are in an open circuit state.

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