Battery and battery system

Abstract

The utility model relates to a battery and a battery system, the battery comprises a shell, a battery monomer and a management module, the battery monomer is accommodated in the shell, and the management module is fixed on the periphery of the shell; wherein the management module is electrically connected with the battery monomers; and the management module can collect the state information of the battery monomers and control the charging and discharging of the battery monomers according to the state information. The battery system comprises the battery. According to the battery and the battery system, the battery monomers are accommodated in the shell, the management module is fixed on the periphery of the shell, and the management module can collect the state information of the battery monomers and control the charging and discharging of the battery monomers according to the state information, namely, the single battery monomers and the management module can form a whole without additionally arranging other chips, so that the cost is reduced, and the cost is reduced. Therefore, state information collection and charge and discharge management functions of the single battery can be realized, miniaturization and lightweight design of the whole battery is facilitated, the cost can be effectively reduced, and the operation is convenient.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery and a battery system. Background Art

[0002] In traditional batteries, multiple battery cells need to be assembled into a battery module, and then the battery module is placed and fixed in the structure to form a battery pack. When sampling status information such as current, voltage and temperature, it is necessary to complete the assembly of the battery pack first, and then use a dedicated chip to sample the status information of the battery cell, which is costly and inconvenient to operate. Utility Model Content

[0003] Based on this, it is necessary to provide a battery and a battery system to address the problem that existing batteries have high costs and inconvenient operations when sampling status information.

[0004] A battery includes a shell, a battery cell and a management module, wherein the battery cell is accommodated in the shell and the management module is fixed to the outer periphery of the shell; wherein the management module is electrically connected to the battery cell; the management module can collect status information of the battery cell and control the charging and discharging of the battery cell according to the status information.

[0005] In the above-mentioned battery, the battery cell is accommodated in the shell, and the management module is fixed to the outer periphery of the shell. The management module can collect the status information of the battery cell and control the charging and discharging of the battery cell according to the status information. That is, a single battery cell and the management module can form a whole. Without the need for other chips, the battery cell status information collection and charge and discharge management functions can be realized, which is beneficial to the miniaturization and lightweight design of the overall battery, can effectively reduce costs and is convenient to operate.

[0006] In one embodiment, the management module includes a temperature sensor and an energy storage inverter, the first connection terminal of the energy storage inverter is connected to the electrode terminal of the battery cell, the energy storage inverter is used to collect first status information of the battery cell, and the temperature sensor is in contact with the first connection terminal and is used to collect second status information of the battery cell.

[0007] In one embodiment, the first state information is voltage and current, and the second state information is temperature.

[0008] In one embodiment, the battery further includes a busbar, and the first connecting terminal and the electrode terminals of the battery cell are electrically connected via the busbar.

[0009] In one of the embodiments, the management module further includes a heat sink, the energy storage converter is disposed on one side of the shell, and the heat sink is disposed on a side of the energy storage converter facing away from the shell.

[0010] In one embodiment, the energy storage converter is provided with a first mounting hole, the housing is provided with a second mounting hole corresponding to the first mounting hole, and a fastener is used to penetrate and lock the second mounting hole and the first mounting hole.

[0011] In one embodiment, a receiving groove is disposed in the housing, the receiving groove has an opening, the battery cell is received in the receiving groove, and a side where the electrode terminal of the battery cell is located is exposed from the opening of the receiving groove.

[0012] In one of the embodiments, the outer wall of the accommodating groove is provided with reinforcing ribs.

[0013] In one of the embodiments, a heat dissipation hole is provided on a side of the accommodating groove opposite to its opening.

[0014] In one of the embodiments, the opening area of ​​the heat dissipation hole is smaller than or equal to the opening area of ​​the accommodating groove.

[0015] In one of the embodiments, the opening of the accommodating groove is arranged on one side of a first direction, and the first direction is the height direction of the battery cell; the battery cell also includes an explosion-proof valve, and the explosion-proof valve is located on the side where the opening of the accommodating groove is located, and the management module is fixed to one side of the shell along a second direction, and the second direction is different from the first direction.

[0016] In one embodiment, the battery further includes a cable tie, which is wrapped around the outer circumference of the shell, and the outer circumference of the shell is provided with a limiting groove for accommodating the cable tie.

[0017] A battery system comprises the above-mentioned battery.

[0018] The above battery system can realize the collection of battery cell status information and charge and discharge management functions without the need for additional chips for a single battery, which is beneficial to the miniaturization and lightweight design of the overall battery, can effectively reduce costs and is easy to operate.

[0019] In one embodiment, the number of the batteries is at least two, and the management module further has a second connection terminal, through which the batteries are connected in series and / or in parallel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 1 is an axonometric view of a battery in one embodiment.

[0021] Figure 2 for Figure 1 Exploded view of the battery shown.

[0022] Figure 3 for Figure 1 Exploded view of the management module in the battery shown.

[0023] Figure 4 for Figure 1 Axonometric view of the housing in the battery shown.

[0024] Figure 5 for Figure 4 Front view of the housing shown.

[0025] Figure 6 for Figure 4 A top view of the housing is shown.

[0026] Figure 7 FIG. 1 is a schematic diagram of a battery system in one embodiment.

[0027] Reference numerals:

[0028] 10. Battery; 20. Battery system; 100. Shell; 101. Second mounting hole; 110. Accommodating groove; 111. Opening; 112. Reinforcing rib; 113. Heat dissipation hole; 120. Limiting groove; 200. Battery cell; 210. Electrode terminal; 220. Explosion-proof valve; 300. Management module; 310. Energy storage inverter; 311. First connecting terminal; 312. First mounting hole; 313. Second connecting terminal; 320. Radiator; 400. Bus bar; 500. Cable tie. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0030] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0032] In this application, unless otherwise clearly specified and limited, the terms "initial", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0034] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0035] Please refer to Figure 1 and Figure 2 The battery 10 in one embodiment includes a housing 100, a battery cell 200 and a management module 300. The battery cell 200 is accommodated in the housing 100, and the management module 300 is fixed to the outer periphery of the housing 100. The management module 300 is electrically connected to the battery cell 200, and the management module 300 can collect the status information of the battery cell 200 and control the charging and discharging of the battery cell 200 according to the status information.

[0036] It should be noted that the status information of the battery cell 200 is information such as voltage, current, and temperature. Each battery cell 200 can be a secondary battery or a primary battery, and can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 200 can be a rectangular parallelepiped, a cylinder, a flat body, or other shapes, and the embodiments of the present application do not limit this.

[0037] In the above-mentioned battery 10, the battery cell 200 is accommodated in the shell 100, and the management module 300 is fixed to the outer periphery of the shell 100. The management module 300 can collect the status information of the battery cell 200 and control the charging and discharging of the battery cell 200 according to the status information. That is, a single battery cell 200 and the management module 300 can form a whole. Without the need for other chips, the status information collection and charge and discharge management functions of the battery cell 200 can be realized, which is beneficial to the overall miniaturization and lightweight design of the battery 10, can effectively reduce costs and is convenient to operate.

[0038] In this embodiment, the battery cell 200 is in a rectangular parallelepiped shape, and the housing 100 is in a rectangular parallelepiped shape to match the battery cell 200. In other embodiments, the battery cell 200 may also be in a cylindrical shape or other shapes, and accordingly, the housing 100 may also be in a cylindrical shape or other shapes.

[0039] Specifically, please refer to Figure 2 The management module 300 includes a temperature sensor and an energy storage inverter 310. The first connection terminal 311 of the energy storage inverter 310 is connected to the electrode terminal 210 of the battery cell 200. The energy storage inverter 310 is used to collect first status information of the battery cell 200. The temperature sensor is in contact with the first connection terminal 311 and is used to collect second status information of the battery cell 200.

[0040] It should be noted that the energy storage converter 310 has two first connection terminals 311 with different polarities, and the battery cell 200 has two electrode terminals 210 with different polarities. The two electrode terminals 210 are electrically connected to the two first connection terminals 311 respectively, and the two first connection terminals 311 are in physical contact with the temperature sensor. In this way, the temperature sensor and the energy storage converter 310 can respectively collect different state information of the battery cell 200, and the operation is convenient.

[0041] In this embodiment, the energy storage inverter 310 has a bidirectional conversion function and a control function, wherein the control function includes obtaining the status information of the battery cell 200 and receiving background control instructions through communication, charging or discharging the battery cell 200 according to the control instructions, and ensuring that the battery cell 200 operates stably and safely.

[0042] For details about this embodiment, please refer to Figure 1The first state information is voltage and current, and the second state information is temperature. In this way, the energy storage converter 310 can collect the voltage and current of the battery cell 200, and the temperature sensor can collect the temperature of the battery cell 200.

[0043] It should be noted that, in other embodiments, the first state information may also be electrical parameter information such as power and the like, and the second state information may also be environmental parameter information such as humidity and altitude and the like.

[0044] Please refer to Figure 2 The battery 10 further includes a bus bar 400 , through which the first connection terminal 311 and the electrode terminal 210 of the battery cell 200 are electrically connected.

[0045] It can be understood that the busbar 400 is a conductive component, and the busbar 400 plays a role in electrically connecting the first connection terminal 311 and the electrode terminal 210 of the battery cell 200 .

[0046] In this embodiment, the number of first connection terminals 311 and electrode terminals 210 of the battery cell 200 is two, and the number of bus bars 400 is also two. One bus bar 400 is electrically connected to one first connection terminal 311 and one electrode terminal 210, and the other bus bar 400 is electrically connected to another first connection terminal 311 and another electrode terminal 210.

[0047] In this embodiment, the busbar 400 is a Z-shaped thin sheet structure. In other embodiments, the busbar 400 may also be a C-shaped, S-shaped or other irregular shapes.

[0048] Please refer to Figure 2 The management module 300 further includes a heat sink 320 . The energy storage converter 310 is disposed on one side of the housing 100 . The heat sink 320 is disposed on a side of the energy storage converter 310 that is away from the housing 100 .

[0049] It should be noted that by arranging the heat sink 320 on the side of the energy storage converter 310 away from the housing 100 , the energy storage converter 310 and the battery cell 200 can be cooled, which is beneficial to the heat dissipation of the energy storage converter 310 and the battery cell 200 .

[0050] Here, one side of the housing 100 may be any side of the outer periphery of the housing 100. In the present embodiment, the housing 100 is in a rectangular parallelepiped shape and includes a top side, a bottom side, and a peripheral side, the peripheral side includes four side surfaces, and the energy storage converter 310 is disposed on one side of the housing 100, that is, the energy storage converter 310 is disposed on one side 102 of the four side surfaces of the peripheral side of the housing 100.

[0051] In this embodiment, the heat sink 320 and the energy storage converter 310 may be an integrated structure, for example, the two are connected by injection molding or casting. Alternatively, the heat sink 320 and the energy storage converter 310 may also be a split structure, for example, the two are connected by screwing or plugging.

[0052] Specifically, please refer to Figure 3 and Figure 2 The energy storage converter 310 is provided with a first mounting hole 312 , and the housing 100 is provided with a second mounting hole 101 corresponding to the first mounting hole 312 . The second mounting hole 101 and the first mounting hole 312 are penetrated and locked by a fastener.

[0053] It should be noted that the second mounting hole 101 and the first mounting hole 312 are penetrated by fasteners so that the energy storage converter 310 can be detachably fixed to one side of the housing 100. The fasteners are screws or bolts, and the first mounting hole 312 and the second mounting hole 101 are screw holes.

[0054] In this embodiment, the number of the first mounting holes 312 and the second mounting holes 101 is not limited to one, that is, the number of the first mounting holes 312 and the second mounting holes 101 can be at least two, and accordingly, the fasteners are set corresponding to the number of the first mounting holes 312 and the second mounting holes 101.

[0055] Please refer to Figure 4 The housing 100 is provided with a receiving groove 110 , and the receiving groove 110 has an opening 111 . The battery cell 200 is received in the receiving groove 110 , and a side where the electrode terminal 210 of the battery cell 200 is located is exposed by the opening 111 of the receiving groove 110 .

[0056] It should be noted that the battery cell 200 is accommodated in the receiving groove 110, and the electrode terminal 210 of the battery cell 200 is exposed from the opening 111 of the receiving groove 110, which can improve the space utilization of the shell 100 without affecting the electrical connection between the electrode terminal 210 of the battery cell 200 and the first connection terminal 311 of the energy storage inverter 310.

[0057] In this embodiment, the battery cell 200 is a rectangular parallelepiped, and accordingly, the receiving groove 110 is also a rectangular parallelepiped. In other embodiments, the battery cell 200 can also be cylindrical or other shapes, and accordingly, the receiving groove 110 is also cylindrical or other shapes.

[0058] For further information, please refer to Figure 4 and Figure 5 The outer wall of the receiving groove 110 is provided with reinforcing ribs 112. In this way, the mechanical strength of the housing 100 can be improved.

[0059] In this embodiment, the outer wall of the receiving groove 110 is provided with at least two reinforcing ribs 112, and each reinforcing rib 112 is distributed horizontally and vertically on the outer wall of the receiving groove 110. Each reinforcing rib 112 can be cylindrical, rectangular or other shapes, and the shape of each reinforcing rib 112 is not specifically limited here.

[0060] For further information, please refer to Figure 4 and Figure 6 A heat dissipation hole 113 is provided on a side of the receiving groove 110 opposite to the opening 111 thereof. In this way, the battery cell 200 in the housing 100 can be quickly cooled.

[0061] In this embodiment, the number of heat dissipation holes 113 is one and is a square hole. In other embodiments, the number of heat dissipation holes 113 can also be at least two, and each heat dissipation hole 113 is evenly distributed on the side of the receiving groove 110 opposite to its opening 111, and each heat dissipation hole 113 can also be a circular hole or a hole of other irregular shapes.

[0062] Specifically, please refer to Figure 4 and Figure 6 The opening area of ​​the heat dissipation hole 113 is smaller than or equal to the area of ​​the opening 111 of the receiving groove 110 . In this way, the battery cell 200 in the housing 100 can dissipate heat quickly without hindering the battery cell 200 from being received in the receiving groove 110 .

[0063] Please refer to Figure 2 The accommodating groove 110 is provided with an opening 111 on one side of a first direction, and the first direction is the height direction of the battery cell 200; the battery cell 200 also includes an explosion-proof valve 220, and the explosion-proof valve 220 is located on the side where the opening 111 of the accommodating groove 110 is located, and the management module 300 is fixed to one side of the shell 100 along a second direction, and the second direction is different from the first direction.

[0064] It should be noted that the first direction is Figure 2 The Z direction is the height direction of the battery cell 200; the second direction is different from the first direction and can be Figure 2 The X direction (i.e., the length direction of the battery cell 200) may also be Figure 2 With the above arrangement, the management module 300 is installed on the side of the housing 100 that is not directly facing the explosion-proof valve 220, and the management module 300 can avoid the explosion-proof valve 220 of the battery cell 200, thereby preventing the management module 300 from being damaged when the battery cell 200 is depressurized.

[0065] In this embodiment, the explosion-proof valve 220 and the electrode terminal 210 of the battery cell 200 are located on the same side of the battery cell 200. In other embodiments, the explosion-proof valve 220 and the electrode terminal 210 of the battery cell 200 may also be located on different sides of the battery cell 200.

[0066] Please refer to Figure 1 and Figure 4 The battery 10 further includes a cable tie 500 , which is wound around the outer periphery of the shell 100 , and a limiting groove 120 for accommodating the cable tie 500 is provided on the outer periphery of the shell 100 .

[0067] It is understandable that after the battery cell 200 is received in the receiving groove 110 , the cable tie 500 is wound around the outer circumference of the housing 100 , and the cable tie 500 provides a pre-tightening force and fixes the battery cell 200 .

[0068] In this embodiment, the number of the cable ties 500 is not limited to one, that is, at least two cable ties 500 may be arranged around the outer circumference of the housing 100 to better fix the battery cell 200 .

[0069] Please refer to Figure 7 , a battery system 20 in one embodiment includes the battery 10 described above.

[0070] It should be noted that, in addition to the above-mentioned battery 10 , the battery system 20 may also include batteries with a structure or type different from the above-mentioned battery 10 , such as solar cells.

[0071] The battery system 20 can be formed as a whole by a single battery 10 without the need for other chips, and can realize the functions of collecting status information of the battery cell 200 and managing charge and discharge, which is beneficial to the miniaturization and lightweight design of the battery 10 as a whole, can effectively reduce costs and is easy to operate.

[0072] Specifically, please refer to Figure 7 The number of the batteries 10 is at least two, and the management module 300 further has a second connection terminal 313, through which the batteries 10 are connected in series and / or in parallel.

[0073] It should be noted that the battery 10 has a relatively small capacity granularity, and the number of batteries 10 connected in series and / or in parallel can be selected according to actual conditions, which is conducive to improving the convenience of use and combination flexibility of each battery 10. For example, the number of batteries 10 connected in series and / or in parallel can be selected according to the household power consumption and the expected backup time.

[0074] In this embodiment, reference Figure 3 and Figure 2The second connection terminal 313 is provided on the energy storage converter 310 of the management module 300, and the second connection terminal 313 and the first connection terminal 311 are located on opposite sides of the energy storage converter 310 in the height direction. In other embodiments, the second connection terminal 313 and the first connection terminal 311 may also be in other relative positional relationships, such as being located on opposite sides of the energy storage converter 310 in the width direction or opposite sides in the length direction.

[0075] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0076] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A battery (10), characterized in that: include: Housing (100); A battery cell (200) is housed in the housing (100); A management module (300) fixed to the outer periphery of the housing (100); The management module (300) is electrically connected to the battery cell (200); the management module (300) can collect status information of the battery cell (200) and control the charging and discharging of the battery cell (200) according to the status information.

2. The battery (10) according to claim 1, characterized in that: The management module (300) comprises a temperature sensor and an energy storage converter (310); a first connection terminal (311) of the energy storage converter (310) is connected to an electrode terminal (210) of the battery cell (200); the energy storage converter (310) is used to collect first state information of the battery cell (200); and the temperature sensor is in contact with the first connection terminal (311) and is used to collect second state information of the battery cell (200).

3. The battery (10) according to claim 2, characterized in that The first state information is voltage and current, and the second state information is temperature.

4. The battery (10) according to claim 2, characterized in that: The battery (10) further comprises a busbar (400), and the first connection terminal (311) and the electrode terminal (210) of the battery cell (200) are electrically connected via the busbar (400).

5. The battery (10) according to claim 2, characterized in that: The management module (300) further comprises a heat sink (320), the energy storage converter (310) is arranged on one side of the housing (100), and the heat sink (320) is arranged on a side of the energy storage converter (310) facing away from the housing (100).

6. The battery (10) according to claim 5, characterized in that The energy storage converter (310) is provided with a first mounting hole (312), the housing (100) is provided with a second mounting hole (101) corresponding to the first mounting hole (312), and a fastener is used to penetrate and lock the second mounting hole (101) and the first mounting hole (312).

7. The battery (10) according to claim 1, characterized in that The housing (100) is provided with a receiving groove (110), the receiving groove (110) having an opening (111), the battery cell (200) being received in the receiving groove (110), and a side where an electrode terminal (210) of the battery cell (200) is located is exposed by the opening (111) of the receiving groove (110).

8. The battery (10) according to claim 7, characterized in that The outer wall of the accommodating groove (110) is provided with reinforcing ribs (112).

9. The battery (10) according to claim 7, characterized in that: A heat dissipation hole (113) is provided on a side of the accommodating groove (110) opposite to its opening (111).

10. The battery (10) according to claim 9, characterized in that The opening area of ​​the heat dissipation hole (113) is smaller than or equal to the area of ​​the opening (111) of the accommodating groove (110).

11. The battery (10) according to claim 7, characterized in that: The accommodating groove (110) is provided with the opening (111) on one side of a first direction, and the first direction is the height direction of the battery cell (200); The battery cell (200) further comprises an explosion-proof valve (220), the explosion-proof valve (220) being located on a side where the opening (111) of the accommodating groove (110) is located, and the management module (300) is fixed to a side of the housing (100) along a second direction, the second direction being different from the first direction.

12. The battery (10) according to claim 1, characterized in that The battery (10) further comprises a cable tie (500), wherein the cable tie (500) is arranged around the outer periphery of the shell (100), and a limiting groove (120) for accommodating the cable tie (500) is provided on the outer periphery of the shell (100).

13. A battery system (20), characterized in that: Comprising a battery (10) as claimed in any one of claims 1 to 12.

14. The battery system (20) according to claim 13, characterized in that: The number of the batteries is at least two, and the management module (300) further has a second connection terminal (313), and the batteries are connected in series and / or in parallel via the second connection terminal (313).

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