diff --git a/apps/devices/services.py b/apps/devices/services.py
new file mode 100644
index 0000000..4fcaed4
--- /dev/null
+++ b/apps/devices/services.py
@@ -0,0 +1,26 @@
+"""
+设备模块服务层
+"""
+from .models import Device, UserDevice
+
+
+class DeviceStatsService:
+    """设备统计服务"""
+
+    @staticmethod
+    def get_bindrate(user):
+        """获取用户设备绑定率"""
+        total_count = Device.objects.count()
+        if total_count == 0:
+            return {
+                'total_count': 0,
+                'bound_count': 0,
+                'bind_rate': 0,
+            }
+        bound_count = Device.objects.filter(status='bound').count()
+        bind_rate = bound_count / total_count * 100
+        return {
+            'total_count': total_count,
+            'bound_count': bound_count,
+            'bind_rate': round(bind_rate, 2),
+        }
diff --git a/apps/devices/views.py b/apps/devices/views.py
index eaf9777..0056b8f 100644
--- a/apps/devices/views.py
+++ b/apps/devices/views.py
@@ -119,8 +119,11 @@ class DeviceViewSet(viewsets.ViewSet):
                 'is_active': True
             }
         )
-        
-        # 更新设备状态
+
+        # 更新设备状态和可选的设备名称
+        device_name = request.data.get('device_name')
+        if device_name:
+            device.name = device_name
         device.status = 'bound'
         device.save()
         
diff --git a/apps/spirits/models.py b/apps/spirits/models.py
index ad2f4d2..9899883 100644
--- a/apps/spirits/models.py
+++ b/apps/spirits/models.py
@@ -26,4 +26,6 @@ class Spirit(models.Model):
         ordering = ['-created_at']
     
     def __str__(self):
+        if self.user_id is None:
+            return self.name
         return f"{self.name} - {self.user.phone}"